JPS6048825B2 - magnetic recording and reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording/reproducing device in which, for example, a small-sized electronic computer and a small-sized magnetic recording/reproducing device are housed in the same housing.

Recently, for example, an electronic desktop calculator and an ultra-small magnetic recording/reproducing device called a micro cassette tape recorder have been housed in the same housing, and by making clever use of the functions of the calculator, the display section can display the ultra-small magnetic recording device. 2. Description of the Related Art Magnetic recording and reproducing apparatuses have been proposed that selectively display the amount of tape travel of the recording and reproducing apparatus.

In such a magnetic recording/reproducing device, for example, the playback start position and stop position are set by key operations on the keyboard of the computer, and the tape is fast-forwarded by the playback operation until the playback start position and the tape count value match. If they match, the tape is played at a constant speed and played.
Thereafter, when the stop position and the tape count value match, the tape running is stopped. However, when rewinding, fast forwarding, and recording operations, only the stop position can be set. The above settings here are number keys...
This is done using the setting key corresponding to the setting purpose. By the way, as described above, the method of setting the playback start position and stop position by key operation is used for the purpose of quickly searching for a desired position, but after the setting is made by key operation, for example, by turning the operation knob. If the operation stops at the playback start position, and only then can it be confirmed that the setting made by the key operation is correct, the following problem arises. That is, if a setting key is pressed by mistake during key operation, the operation knob will be operated in vain, resulting in a significant decrease in operability. This invention has been made in view of the above circumstances, and its objects are to provide a counting means for counting the amount of tape travel by counting pulses generated as the tape travels, and a method for performing desired reproduction of the tape. A numeric key for numerically inputting a start position and a stop position, at least one setting key for setting the numeric value entered with this numeric key, a set value (desired position) by these numeric keys and setting keys, and the above-mentioned counting means. control means that controls the running or stopping of the tape when the counted value, that is, the tape count value matches, and at least when the setting is made using the setting key, whether the set value is the playback start position. By providing a display means to display whether the setting is at the stop position or not, it is possible to confirm that the set value has been memorized at least at the time of key operation and whether or not there has been a mistake in operating the setting key. It is an object of the present invention to provide a magnetic recording and reproducing device which can prevent undesirable operations and whose operability is significantly improved.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a magnetic recording/reproducing device according to the present invention, for example, a small electronic computer for office use (so-called electronic desktop calculator) and a small magnetic recording/reproducing device for memo use (so-called microcassette tape recorder) in the same housing. This figure schematically shows the external appearance of a magnetic recording and reproducing device with an electronic calculation bar housed in the body.

At the lower front part of the housing 1, there is a power switch 2 for calculation, computer mode (CAL) or tape count mode (T).
APE) selector switch 3, keyboard 4,
A display section 5 for digitally displaying calculation results, tape count values, etc. is provided. The upper front part of the housing 1 is a bar 6 that can be opened and closed, and by opening and closing this cover 6, a micro cassette magnetic tape can be loaded 4.
It is becoming possible to escape. And on the cover 6,
A see-through window 7 through which the state of the loaded magnetic tape can be viewed and a sound emitting hole 8 for emitting reproduced sound to the outside are provided. On the other hand, on the right side of the housing 1, which corresponds to the cover 6, there are operation knobs 9 for playback (PLAY), playback fast forward (F.F.), stop, rewind (REV.), and recording operations. A button (REC.) 10 is provided.

FIG. 2 shows in detail the internal mechanism housed in the housing 1 corresponding to the cover 6, which is configured as follows, for example. That is, FIG. 2 is in a stopped state. First, in the case of regeneration, by sliding the operation knob 9 from the illustrated position A (stop) to the illustrated B position (regeneration), the operation knob lever 11 integrated with the operation knob 9 is moved at its left end and approximately central portion. It slides along guide shafts 13a, 13b inserted into elongated holes 12a, 12b provided in the. Due to this sliding, the pin 15 fixed to the tip of the support plate 14, which swings about the guide shaft 13a, slides along the protrusion 11a of the operating knob lever 11, and by the action of the leaf spring 16, the pin 15 fixed to the tip of the support plate 14 swings about the guide shaft 13a as a fulcrum. It is pressed against the portion 11a. As a result, the operation knob lever 11 is placed in a locked state. On the other hand, as the operation knob lever 11 slides, the switch shaft 17 integrated with the operation knob lever 11 also slides, and the power switch 18a of the switch mechanism 18 is turned on.

When turned on, the motor 19 starts rotating at a constant speed, and this rotation is transmitted to the flyhole 21 via the endless belt 20. On the other hand, the support plate 22 that is integrally formed with the fly hole 21 is connected to the protrusion 11 of the operation knob lever 11.
b is released from the locked state, and rotates about the shaft 22a by the tensile force of the spring 23. As a result, the flyhole shaft 21a of the flyhole 21 comes into pressure contact with the outer peripheral surface of the take-up reel stand 24, and this take-up reel stand 24
The take-up reel shaft 24a of No. 4 starts rotating, and is set on the rewind reel shaft 25a of the rewind reel stand 25, and the magnetic head 2
The magnetic tape hooked to the take-up reel shaft 24a via the magnetic tape 6 is sequentially fed, and is converted into an electric signal by the magnetic head 26 to start reproduction. By further sliding the operation knob 9 in the direction of arrow C in the figure, the fast-forward switch 18b of the switch mechanism 18 is turned on again by the switch shaft 17, and the motor 19 changes from constant speed rotation to high speed rotation, as will be described later. Fast-forwarding the playback results in a so-called α-king state. Next, in the case of recording, the recording lever 27 integrated with the recording button 10 slides by pressing the recording button 10 in the direction of the arrow E shown in the figure. Projection 28a
It engages with the locking state.

Further, by sliding the recording lever 27, the erasing b head 29 is rotated about a shaft 29a, so that the demagnetizing magnet 29b embedded in the erasing head 29 comes into close contact with the magnetic tape. Further, when the erasing head 29 rotates, the recording/reproducing changeover switch 30 linked thereto operates in the direction of arrow F in the drawing, and the amplifier circuit (not shown) and the magnetic head 26 are switched to the recording state. In this state, the operation knob 9 is moved as shown in FIG.
Recording begins by locking into position. next,
When rewinding the magnetic tape, operate the By sliding the knob 9 in the direction of the arrow D shown in the figure, the operation knob lever 11 also slides.
The support plate 22 is rotated about the shaft 22a in a direction opposite to that during playback by the protrusion 11b. Due to this rotation, the gear 21b of the flyhole 21, which is integrally formed with the support plate 2.2, engages with the rewind idler 31. This rewind idler 31 is engaged with the rewind reel stand 25. On the other hand, while the operating knob 9 is being slid, the switch shaft 17 is also sliding, and the power switch 18a is turned on. As a result, the motor 19 rotates at high speed, and the rotation is transmitted to the flyhole 21 via the endless belt 20 as described above. As a result, the rewind reel stand 25, that is, the rewind reel shaft 25a rotates, and the magnetic tape is now fed in reverse, thereby performing rewinding. Furthermore, by sliding the switch shaft 17, the rewind switch 18c of the switch mechanism 18 is newly turned on, and based on the on/off state of the rewind switch 18c, the tape count is performed by addition processing or subtraction processing as described later. It is designed to determine and control whether to perform the operation. Further, when the recording button 10 is locked, when rewinding is performed by sliding the operating knob 9 in the direction of the arrow D in the figure as described above, the protrusion 11 of the operating knob lever 11 accompanying this slide: (c) Due to this action, the lock plate 28 rotates around the east I28b.As a result, the protrusions 27a and 28
A is disengaged, and the lock E of the recording button 10 is released by the tensile force of the spring 32. At the same time, the distance increasing circuit (not shown) and the magnetic head 26 are switched to the reproduction state. Therefore, the winding seal shaft 24
As shown in FIGS. 3A and 3B, for example, a magnet (permanent magnet) 33 is fixed to a, and this magnet 33 rotates integrally with the disc-shaped take-up reel shaft 24a. It's summery.

A reed switch 34 is disposed on the outer periphery of the magnet 33 in close proximity thereto. The reed switch 34 is turned on and off by changes in the magnetic field generated as the magnet 33 rotates.
3, that is, when the take-up reel shaft 24a rotates once, on-off is repeated twice. The on-off output of the reed switch 34 becomes a pulse corresponding to the rotation of the reel, that is, a pulse corresponding to the amount of tape running, and this pulse is counted as described later to process the tape count (the amount of tape running). counting process)
is now being carried out. FIG. 4 schematically shows the circuit configuration of the main part of the magnetic recording and reproducing apparatus with electronic computer according to the present invention, which is configured as follows, for example.

That is, 35 is a DC power source, such as a battery, for supplying operating voltage to the display section 5, motor 19, arithmetic control section 36, and the like. The battery 35 is connected to a drive control section 37 and a booster circuit 38 via a power switch 18a and a calculation power switch 2, respectively. The drive control section 37 is for controlling the rotation of the motor 19, as will be described later. Further, the booster circuit 38 converts the DC voltage +V of the battery 35 to a predetermined voltage +VD.
) It boosts the voltage to -VK and +VF and outputs it.
The boosted voltages +VD and -VK are supplied to the calculation control section 356, and the voltage +VF is supplied to the display section 5. Here, the voltages +VD)-VK and +VF are the operating voltage of the calculation control section 36, the lighting voltage of the display section 5, and the filament voltage of the display section 5, respectively. Therefore, the calculation control section 3
6 is supplied with voltages +VD and -VK, ''o
The digit signals D, ~D9 whose level is -Vk and level 1 is +VD are displayed on the display section 5 and the key input section 3.
It is now output to 9. This key input section 39 inputs the digit signals D, -D. The key signal input terminals K, , K2, K . ，
There is something to output to K8. Then, the calculation control section 3
6 performs various arithmetic processing (at least four arithmetic operations and other necessary operations, etc.) or counting processing according to the operating state according to a pre-stored sequence program based on the key signal. At the same time, the results or necessary information are stored, and segment signals Sa to Sg and SdP, which will be described later, synchronized with the digit signals D to D9 are outputted to the display section 5 to dynamically display predetermined characters and symbols. Furthermore, control signals MS and MF are output to the drive control section 37 to control the motor 1.
9, and is constructed of, for example, a large scale integrated circuit (LSI). Further, one end of the fast forward switch 18b is connected to the drive control section 37,
The other end of this switch 18b is grounded. The details of the control of the motor 19 by the drive control section 37 are as follows, for example.

That is, when the power switch 18a is off (at this time, the fast-forward switch 18b is also off), the voltage +
Since V is not supplied, motor 19 is stopped regardless of the states of control signals MS and MF. Furthermore, even when the power switch 18a is turned on and the control signal MS becomes ``1'' level (hereinafter simply referred to as MS-0N), the transistor 40 is turned on and the transistors 41 and 42 are turned off. As a result, the motor 19 is stopped regardless of the state of the fast-forward switch 18b and the control signal (2). In this state, when the control signal MS becomes ``0'' level (hereinafter simply referred to as JMS-0FF), if the fast-forward switch 18b is off and MF-0FF, the transistor 40
, 43 are turned off and the transistors 41, 42, and 44 are turned on, thereby causing the motor 19 to rotate at a constant speed. On the other hand, the fast forward switch 18b3 is on or MF-0N (
At this time, if the transistor 43 is on, the transistors 40 and 44 are turned off and the transistors 41 and 42 are turned on, causing the motor 19 to rotate at high speed.
FIG. 5 shows the circuit configuration of the key input section 39 in detail 4. For example, it is configured as follows. That is,
This key input section 39 is mainly composed of the keyboard 4, and this keyboard 4 is configured to input the digit signals D,
8 line lines where ~D8 is input (hereinafter simply referred to as D, ~
(referred to as the D8 line) and the input terminal K of the arithmetic control section 36,
,K. , K, (hereinafter simply referred to as K, , K2, and K column lines), press a numeric key such as [0 to 9] at each intersection of the matrix. , command keys such as [÷, ×, -, +, =, %, V],
Memory keys 4a~ such as [CMNRM) M-, Mf]
4d and a clear key 4e such as [C/CE]. Here, the decimal point key (pause key) 4q is not provided at the intersection of the matrix. That is, one end of the switch 45 of the decimal point key (pause key) 4q is connected to the D line, and the other end of this switch 45 is connected to the K line through two backflow prevention ties 7 autos 46 and 47, respectively. , K. are connected to the column lines, and each connection point thereof is connected to one end of the switches 3a, 3b constituting the changeover switch 3, respectively, and the other ends of the switches 3a, 3b are connected to the input terminals K, , K8, respectively. In addition, the input terminals K, , K2, K of the arithmetic control section 36
,,K. are connected to one end of resistors 48 to 51, respectively, and the other ends of these resistors 48 to 51 are connected in common to the voltage -V.
．． . is now being supplied. On the other hand, D.

The row line is connected to one end of the reed switch 34 via a backflow prevention diode 52, and the other end of this reed switch 34 is connected to the K8 column line. Also, D. The emitter of a PNP transistor 54 is connected to the row line via a backflow prevention diode 53, and the collector of this transistor 54 is connected to the K8 column line. The base of the transistor 54 is
It is connected to one end of the rewind switch 18c via an NPN transistor 55, and the voltage +V is supplied to the other end of the switch 18c via a power switch 18a. In addition, a backflow prevention diode 5 is connected to the D7 line.
6 is connected to the emitter of a PNP transistor 57, and the collector of this transistor 57 is connected to the K8 column line. The base of the transistor 57 is connected to one end of the power switch 18a via an NPN transistor 58. Further, one end of the recording/playback changeover switch 30 is connected to the D8 line through a backflow prevention diode 59, and the other end of this switch 30 is connected to the line K. Connected to column line. moreover,
D. Row line and K. A backflow prevention diode 60 is connected between the column line and the column line. In addition, illustrations 61 to 64
has a diode to prevent backflow. Next, the key input unit 39 configured as described above will be explained in detail.

That is, this key input section 39 inputs the digit signals D1 to
The input terminals K, , K2, K. ,K. A time-sharing method is used to output to either of the following. When the selector switch 3 is set to the computer mode (CAL) side, the switch 3a is turned on and the key signal from the key input section 39 is sent to the input terminals K, , K of the calculation control section 36. ,K. It will now be output to one of the following, and this will put it into computer mode. For example, if the number key ■ is pressed now, the switch 65 is turned on, and when the digit signal D6 is turned on (+VD), the arithmetic control unit 3
The voltage +VD is input to the input terminal K of the input terminal K, and the arithmetic control unit 36 receives the input signal (key signal) of the input terminal K and the digit signal D. Based on this, it is decoded to the numerical value ``5'' and the processing of the numerical value ``5'' is executed.
Meanwhile, switch 3 is set to tape count mode (TAP).
When set to the E) side, the switch 3b is turned on, and the key signal from the key input section 39 is outputted to one of the input terminals K, , K2, and K of the arithmetic control section 36.
This sets the tape count mode. In the case of this tape count mode, the input terminal K of the arithmetic control section 36. The signals described below are input to the . In other words, when the changeover switch 3 is set to the tape count mode, the digit signal D9 is directly input, so the arithmetic control section 36 receives this digit signal D. It is now possible to determine whether the mode is computer mode or tape count mode depending on whether or not the value is input. In addition, the recording button 1
When 0 is pressed, the recording/playback selector switch 30 is turned on and the digit signal D is output. is now being entered.
Next, when the operating knob 9 is in a position other than the A position shown in the figure (when stopped), the power switch 18a is turned on, and the
ι register 58 is turned on, and the digit signal D becomes '゛1'.
'(+VD), the transistor 57 is turned on and the D signal is input. Further, when the operation knob 9 is in the direction D shown in the figure (during rewinding), the rewinding switch 18c is turned on.
This turns on the transistor 55, and the digit signal D
. is input. Here, the arithmetic control section 36 confirms that the recording/reproducing operation is in progress due to the input of the digit signal D. By inputting , it is recognized that the tape count process is a subtraction count process. Further, a digit signal D, is input, and a digit signal D is input. When is not input (the operating knob 9 is in the illustrated position or in the C direction), the arithmetic control section 36 recognizes that the tape count process is an addition counting process. Note that the digit signal D6 is input to the input terminal K.
. is input when both the power switch 18a and the rewind switch 18c are on, and this is to avoid delaying the timing of inputting the digit signals D6 and D by one cycle or more, as will be described later. Therefore, in this embodiment, when the operating knob 9 is slid in the direction D in the figure as shown in FIG.
The power switch 18a is turned on earlier than or at the same time as the power switch 18a. Next, when the reed switch 34 is turned on, the digit signal D, is input.
Based on this digit signal D5, the arithmetic control section 36 performs a process of counting the amount of tape travel. Also, when the decimal point key (pause key) 4q is pressed,
Since the switch 45 is turned on, the digit signal D is input to the input terminal K. As a result, the arithmetic control unit 36 outputs a control signal MS (MS-0N) to temporarily stop the motor 19. Please note that the decimal point key (
When the changeover switch 3 is set to the computer mode (CAL) side, the pause key 4q turns on the switch 3a, allowing the digit signal D to be input to the input terminal K. The pause key 4q is used as a decimal point key in the computer mode. It is now being processed.

In addition, the input terminals K, , K of the arithmetic control section 36 of the keyboard 4
The keys connected to 2 are used in both the computer mode and the tape count mode, but memory keys 4a to 4d have different functions depending on the mode, ie, a so-called double function function. That is, when in computer mode, they have a clear memory function, recall memory function, memory minus function, and memory plus function, and when in tape count mode, they have a setting release function (R) and a tape count function, respectively, as described later. It has a value setting function (S), a playback position setting function (>), and a stop position setting function (mouth).

Here, in the tape count mode, memory keys 4a~
4d, ``R'' key 4a) ``S'' key 4b) ``ST'' key 4c and ``STOP'' respectively.
It is called key 4d. Thus, the various signals mentioned above are input to the input terminals K, , K of the arithmetic control section 36. , K. , K8 and processed by the arithmetic control section 36 in accordance with these signals will be displayed on the display section 5. A method of displaying the results on the display section 5 will be described with reference to FIGS. 6 to 8. That is, FIG. 6 shows the stored contents of each digit of the display register 66 consisting of 4 bits and 9 digits and the status flag of the input terminal K8 of the arithmetic control unit 36 corresponding to each digit. is provided in the calculation control section 36. FIG. 7 shows a display conversion unit that converts the storage contents of the display register 66 into segment signals, and the correspondence between the segment signals and each segment of the display unit 5. It is set in. That is, 4 bits R8, R of display register 66. , R2, R, are decoded by an AND matrix 67, and the decoded contents are converted into seven segment signals S by an 0R matrix 68.
It is encoded into a, Sb, Sc, Sd, Se, Sf, and Sg. FIG. 8 shows the storage contents of the display register 66 (4-bit input contents of the AND matrix 67)
and segment signals, for example, AN
When "1011" is input to the D matrix 67, segment signals Sa, Sf. ] is output, which means that ``'' is displayed.Furthermore, when the flag [S] is set, when input to the Nyaku matrix 67, the segment signal SdP is output, and the decimal point ''. '' is now displayed.Next, a magnetic recording/reproducing apparatus with a computer, which is an embodiment of the present invention having the above-described configuration, will be described in more detail.

Also, in tape count mode, for example, display register 6
If the memory contents of 6 are present, the arithmetic control unit 36
However, if the contents of the table 4 display register 66 are synchronized with the digit signal and inputted as they are to the AND matrix 67, unnecessary ``0'' will also be displayed on the display section 5 as is.

Therefore, in this embodiment, the contents of the display register 66 are changed to blank out unnecessary ``0'' before entering the display cycle. In other words, for example, 4 binary bits ``0000''. '(O) '1111'
'(15), the unnecessary "0" is blanked out as shown in Figure 8, and as a result, the display content becomes as shown in Figure 9 during the display cycle. (Hereinafter, the above-mentioned process FIG. 10 shows a flowchart of the above-mentioned zero suppress processing in the arithmetic control unit 36, in which the upper digits (9
Zero suppression is performed sequentially starting from the digit (digit), and when a numerical value [1 to 9] is detected, the zero suppression processing is terminated.

That is, the arithmetic control unit 36 specifies the 9th digit [9-DIGIT] in the flow 70., and in the flow 71, the storage content of the specified digit of the display register 66 ``R8R. R2Rl''
Check whether is ``0000'' [R=0
〕do. Here, R=8R8+4R4+2R2+R1. If it is ``0000'', proceed to flow 72;
The memory contents of the specified digit of the display register 66 are set to ``1111''.
' [15→R] and proceed to flow 73. On the other hand, if it is not '0000', proceed to flow 74, check whether the stored content of the specified digit of the display register 66 is a numerical value [R≧10], and if it is a numerical value (R<10), perform zero suppression processing. If the sign (R≧10) is completed, the process advances to the flow 73 described above. In this flow 73, set the specified digit to '“-1”
' to specify a new digit to check next [
DIGIT-1-DIGIT] and proceeds to flow 75. In this flow 75, it is checked whether the digit newly specified in the above flow 73 is the first digit.
= 1], and if it is the 1st digit, zero suppression processing is completed and 1
If it is not the digit, the process returns to flow 71 and the above-described zero suppression process is repeatedly executed. For example, as in the above-mentioned example, if the storage content of the display register 66 is Nmnb on the neck, first, flows 70, 71, 72, and 73 are processed in this order, and the storage content of the display register 66 becomes the fart ■■■■ time. Then, the processing in the order of flows 75, 71, 74, and 73 is performed to obtain the certificate 1■■'', and then the processing in the order of flows 70, 71, 72, and 73 is repeated four times, resulting in 511.

Furthermore, flows 75, 71, and 74 are processed in this order, and R=
Since it is 1, the zero suppression process ends and the display cycle begins.

Note that in this embodiment, the arithmetic control unit 3 is operated during the display cycle.
6 input ends K, , K2, K. ,K.

When a key signal is output from the key input unit 39 to any one of the digits, the arithmetic control unit 36 stops outputting the digit signal.
In order to erase the display and perform processing corresponding to the above key signal,
The next zero suppression release process is performed. That is, FIG. 11 shows a flowchart of the zero suppression cancellation process in the arithmetic control unit 36. First, in flow 76, the 9th digit is specified - [9→DIGIT], and then in flow 7
7 indicates the memory contents of the designated digit of the display register 66. R4
Check whether R2R,'' is ``1111'' [R = 15]. If “1111”, proceed to flow 78 and change the memory contents of the display register 66 to “0”.
Convert to 000'' [o→R] and proceed to flow 79. On the other hand, if it is not "1111", the process directly proceeds to flow 79. In this flow 79, by incrementing the specified digit by '-1', the next digit to be checked is newly specified [DIGIT
-1→DIGIT] and proceeds to flow 80. In this flow 80, the above flow. The new digit specified by -79 is '
Check whether it is ``O'' [DIGIT=0]
If it is ``O'', the zero suppression release process is completed.
If it is not ``0'', the process goes to flow 77 again and the above-described zero suppression process is repeatedly executed. Next, the contents of various calculations, counts, and control processes in the tape count mode described above by the calculation control section 36 are explained in FIG. 12a.
This will be explained in detail with reference to the flowchart shown in -j.

That is, when the calculation power switch 2 is turned on, the voltage +VD is supplied to the calculation control section 36, whereby the calculation control section 36 operates. In the first flow 100, the stored contents of all registers and the K8 input status flag are cleared, and the process proceeds to flow 101. In this flow 101,
Zero: Suppression processing is performed according to the flow described above, and the process proceeds to flow 102. In this flow 102, the ninth digit is designated [9→DIGIT] and the process proceeds to flow 103. In flow 103, the specified digit is incremented by ``+1'' to specify the previous digit [DIGIT+1→DIGIT], and the flow proceeds to flow 104. In flow 104, the digit signal corresponding to the newly specified digit is sent. It is turned off to reduce power consumption. Next, proceed to flow 105 and change the specified digit to ''-
1'' to specify a new digit [DIGIT-1
→DIGIT] and proceed to flow 106. flow 106
Now, the memory contents of the designated digit of the display register 66 ''R8R
. R. R,'' and the contents of the flag [S] are converted into segment signals Sa-Sg, Sdp by the AND matrix 67 and the 0R matrix 68, and output to the display section 5 [S].
EGMENT(DIGIT)0N) SEGMENT(D
IGIT+1)0FF] and proceeds to flow 107. In flow 107, a digit signal (D in this case) corresponding to the designated digit is output to the display unit 5 [DIGIT-0N],
The above stored contents are displayed on the designated digit of the display section 5. Next, the flow advances to flow 108 to check whether the designated digit is ``0'' [DIGIT=o], and if not ``0'', the flow advances to flow 109. In flow 109, the storage contents of the display register 66 ``R8R. Check whether R2R,'' is '111th block', that is, R=15 [R=15]
Then, if R=15, the process proceeds to flow 110. flow 1
10, the key signal from the key input section 39 is input to the calculation control section 3.
Memorized in 6 [K. ,K. , K2, K, -K] and proceeds to flow 111. In flow 111, the digit signal (D9 in this case) corresponding to the specified digit is turned off [DIGITOFF
] and proceeds to flow 112. This is to save power by turning off the digit signal D9 since the ninth digit of the display is blanked. On the other hand, if R:15, the process proceeds to flow 113, where the same processing as in flow 110 is performed, and the process proceeds to flow 112 described above. In this flow 112, flow 1
10 or the key signal input terminal K stored in flow 113.
,K. , K2, K, checks whether the input contents of K:O are checked (CK half 0). Here K=8K8+4K.
+2K2+K1, and when the key signal is on, K:O when it is off, K=0. Now, since the designated digit is 9 digits, it is checked whether the selector switch 3 is in the computer mode or tape count mode. ; Therefore, in the case of K=0 (computer mode side), flow 114
Proceed to ``-1'' for the specified digit to specify a new digit [DIGIT-1-DIGIT] and proceed to flow 11.
Proceed to step 5. In flow 115, it is checked whether there is a decimal point in the newly specified digit [DIGIT=PCY], and if there is a decimal point, the process advances to flow 116 and flag [S
] Set [[S]SeO, and if there is no decimal point, proceed to flow 117 and reset the flag [s] [[S]R
eset]. Then, returning to the flow 103,
There is no key signal input from the key input section 39 (K=0)
In this case, the process starts from the flow 103 described above, and
The process is repeated by returning to step . As a result of such repetition, when the specified digit becomes ``0'' in flow 105,
By checking [DIGIT=0] in flow 108, the process proceeds to reflow 118, and the specified digit ``9'' to ``O'' is repeated four times (hereinafter, simply count ``'4'').
'') [CO[汀=4]]. If the count is ``4'', the process returns to flow 102, and if the count is not ``4'', the process returns to flow 1.
Proceed to step 19 and specify a new count number by adding ``+1'' to the count number [COUNT+1 → COUNT
] Then, the process returns to flow 102. As a result of these repetitions, digit signals D, to D are generated. are turned on one after another, and segment signals synchronized with these digit signals are displayed on the output display section 5. In this case, the stored contents of the display register 66 are cleared in flow 100, and zero suppression processing is performed in flow 1, mouth 1, so that the display contents of display unit 5 are [0. ]. J Next, when a key operation is performed, the key signal from the key input unit 39 is stored in the arithmetic control unit 36 in the flow 110 or 113, and the process proceeds to flow 112.

In flow 112, as described above, the content of the key signal is K:
Check whether there is O [K:0], and set K:O (7
), the process proceeds to flow 120. In flow 120, it is checked whether the content of the key signal is K≧8 [K≧8]
Then, if K≧8 is not satisfied, the process proceeds to flow 400. In flow 400, check whether the count is ``4'' [COUNT=. 4], and if the count is ``4'', the process advances to flow 401. In flow 401, the digit signal corresponding to the designated digit is turned off, and the process proceeds to flow 402. In flow 402, zero suppression cancellation processing is performed, and the flow advances to flow 403. In flow 403, which digits are received? When the key signal is turned on, it is determined to which key signal input terminal the key signal was input, and based on this, so-called key selection is performed to determine which key was pressed, and the process proceeds to flow 404. flow 404
Then, perform calculation processing based on the key selection result in the flow 403 above, and clear the force/count number [o→COUNT
] and then returns to the flow 101. The above content will be explained in more detail. For example, when you press the number key ■, the switch 65 turns on, and now:
Assume that in flow 105, the designated digit is 6 digits. At this time, the flows 106, 107, 108, 109, 110,
Processing is performed in the order of 111, and a digit signal D is input to the key signal input terminal K of the arithmetic control section 36. is input (K=1)
. Therefore, the flows 112, 120, 400, 401
, 402, 403, and 404, the numerical value ``5'' in the computer mode is processed in this order.

When this process is completed, the process returns to flow 101 and zero suppression process is performed, and while the numeric key 5 is pressed, the process is performed in the following display cycle. That is, if the designated digit is not 6 digits, the above-mentioned display section 5 will display [0. ] is displayed, the process is repeated in the same display cycle. Also, if the specified digit is 6 digits, check whether the count is ``4'' in the flow 400 [COUNT=4]
Then, if the count is not ``4'' (flow 404 count number is set to ``0''), the process advances to flow 405. In flow 405, the count number is cleared [0 → CO
UNT] and proceeds to flow 114, whereupon [0. ] is displayed, the process is repeated in the same display cycle. Next, when you release number key M, [0.
] is displayed in the same display cycle, and in the flow 119, the count number becomes ``1''.
It increases little by little. This indicates that the key has been released, and when the count reaches ``4'' (approximately 2 in this example)
0ms) The contents of the next key operation are accepted. On the other hand, when the selector switch 3 is set to the tape count mode side, the key signal from the key input section 39 (input at the input terminal K8) is stored in the arithmetic control section 36 in the flow 110 or flow 113, and the process proceeds to flow 112.

In flow 112, as described above, the content of the key signal is K:
Check if it is 0 [K:0], and set K:O(7
) (K=8 in this example when the specified digit is 9 digits), the process proceeds to flow 120. In flow 120, it is checked whether the content of the key signal is K≧8 [K≧8], and K≧8. In this case, the process goes to flow 121. In this example, since K=8, the process goes to flow 121, sets the flag [TAPE], and recognizes that the tape count mode is in effect.The process then goes to flow 122, where the tape count The contents of the value storage register (hereinafter simply referred to as TREC) are transferred to the display register 66 (hereinafter simply referred to as DISPREC) [TR
EC→DISPREC], the computer display is switched to the tape count display as described below, and a tape count mode display cycle is entered. Here, the above TREC is
A 5-digit register (coded 1) in which the tape count value is stored.
digit + setting value Z4 digits). That is, the above flow 12
When the flow advances from 2 to flow 123, zero subresponse processing is performed, and the flow advances to flow 124. In flow 124, the contents of the pause counter (hereinafter simply referred to as PCOUN.), which will be described later, are
is set to 'O'' [0→PCOUNT], and then in flow 125, the ninth digit is specified [9→DIGIT], and the flow proceeds to flow 126.

In flow 126, the same process as in flow 106 (S
EGMENT(DIGIT)0NNSEGMENT(D
IGIT+1)0FF], then flow 12-7
Then, the same process as the flow 107 [DIGITON
], whereby the contents of the display register 66 are displayed on the designated digit of the display section 5.

Next, the process proceeds to flow 128, where [DIGIT=O] is checked, and if "'O'' is not present, the process proceeds to flow 129.
Flo. -129, [R=15] is checked, and R=
If R=15, proceed to flow 130, flow 131, then flow 132, and if R=15, proceed to flow 133.
The process then proceeds to the flow 132 described above. Here, flow 13
0 and flow 133 [K.

,K. ,K. , K, =K] processing, and in flow 131, the [DIGITOFF] processing is performed. However, in the above flow 132, it is checked whether the K8 input status flag of the specified digit shown in FIG.
(DIGIT)Set]. If this status flag is set (in this example, the flag [TAPE] is set when the designated digit is 9 digits as described above), flow 1
34, it is checked whether the content K of the key signal is K≧8, that is, whether at least the input at the input terminal K8 is ON [K≧8]. In this example K=
8, so proceed to flow 135 and specify the next digit [DI
GIT-1→DIGIT] and proceeds to flow 136. In flow 136, the memory content of DISPREC is ``101''.
0'', that is, R=10, check [R=10], and if R=10, set the flag [S] in flow 137, and if R=10, set the flag [S]. Reset the flag [S] in flow 138 [
[S] Perform ReseO and both proceed to flow 139. Specify the previous digit in flow 139 [DIGIT+1 → DIGI
T] and then performs [DIGITOFF] processing in flow 140 and proceeds to flow 141. In flow 141, specify the next digit [DIGIT-1→DIGIT] (in this example, 8
digit) and returns to flow 126. Processes from flow 126 to flow 132 are performed in the order described above, and when the designated digit is 8 digits, the status flag is reset, so the process proceeds from flow 132 to flow 142. In flow 142, similarly to flow 134, it is checked whether K≧8 [K
≧8], and as in this example, if K<8, the process advances to the flow 135 and the same process is repeated. In this way, after the above-described process is repeated, the ``0'' digit is specified in flow 141 and the process proceeds to flow 128.
DIGIT=0] is checked, and since it is ``o'', the process advances to flow 143.

In flow 143, it is checked whether content ``1010'' indicating stop ``P'' is set in DISPREC [Pset], and if it is reset, the process advances to flow 144. In flow 144, the flag [PLA
Check whether Y] is set [[PLA
Y] SeO, and if reset, proceed to flow 14
Proceed to step 5.

In flow 145, [9→DIGIT] is processed, and then in flow 146, [SEGMENT (DIGIT) 0N,
．． SEGMENT(DIGIT+1)0FF] processing, perform [DIGITON] processing in flow 147, and proceed to flow 1
Proceed to step 48. In flow 148, a [DIGIT=0] check is performed, and if it is not "0", the process proceeds to flow 149, where a [R=15] check is performed. If R=15, the process proceeds to flow 150, flow 151, and then flow 152; if R=15, the process proceeds to flow 153 and then to flow 152. Here, in flows 150 and 153, [K8, K,, K2, K, →K] processing is performed, and in flow 151, [DIGITOFF] processing is performed. Therefore, in the above flow 152, the content K of the key signal is 1≦K<3.
, i.e., the input end K, or K. Check if only the input is on [1≦K<3]
However, if 1≦K<3, the process proceeds to flow 154. In flow 154, [DICIT-1→DIGIT] is processed, and the flow advances to flow 155. In flow 155, [R=10] is checked, and if R = 10, the flow advances to flow 156, where the [[S] Set] process is performed, and the flow advances to flow 157. R=
If it is not 10, proceed to flow 158 and perform [[S')R
eset] process and proceeds to the flow 157 described above. In flow 157, [DIGIT+1→DIGIT] processing is performed, and the flow advances to flows 159 and 160. In flows 159 and 160, [DIGITOFF] processing and [DIGIT-
1→DIGIT] processing and returns to the flow 146.
In this way, after the above-mentioned process is repeated, the "0" digit is specified in flow 160, and when the process proceeds to flow 148, [DIGIT=0] is checked, and since "DIGIT=0" is 2, the "0" digit is specified. Proceed to 161.

In flow 161, check [COUNT=2],
If the count is "2", the process returns to the flow 125, and if the count is not 4.2, the process proceeds to the flow 162 [CO
UNT+1 → COUNT] After processing, reflow 1
Return to 25. Therefore, the flows 132, 134, 1
Input end centered on 42? The input check routine of 1 and the input check routine of the input terminals K1 and K2 centering on the flow 152 are alternately repeated and displayed on the display section 5. Here, the tape count value displayed on the display unit 5 in the tape count mode is an integer display as described above. Therefore, the calculation power switch 2
When turned on, whether the mode is the calculator mode or the tape count mode can be determined by whether or not a decimal point is displayed on the display section 5. Next, the contents of various calculations, counts, and control processes performed by the calculation control section 36 when the operation knob 9 is operated are explained. Explain in detail.

First, when the operation knob 9 is set to the reproduction side (position B in the figure), the power switch 18a is turned on and the digit signal D7 is output from the key input section 39 to the input terminal K8 of the arithmetic control section 36.
The arithmetic control unit 36 stores the input contents of the input terminal K8 in the flow 130 or the flow 133. For example, if the currently designated digit is 7 digits, the process proceeds to the flow 132 and then to the flow 142. In flow 142, check [K≧8] and
=8, so proceed to flow 163 [DIGlT=5]
Check. Now, in the case of this example where the designated digit 4 is not 5 digits, the process proceeds to flow 164 to perform the [DIGITOFF] process, then proceeds to flow 165 to perform the [zero suppression release] process, and then proceeds to flow 166. In flow 166, [DIGIT=5] is checked, and if the designated digit is not 5 digits as in this example, the flow advances to flow 167. In flow 167, the K8 input status flag of the specified digit is set [R
EG (DIGIT) Set], that is, in this example where the designated digit is 7 digits, the flag [PLAY] is set to recognize that it is in the playback state. Below, flow 16 will be described later.
8 to 186 and returns to the flow 123. Thus, until the reel rotation pulse is input, the input terminal K8 is centered on the flows 132, 134, and 1F 42 described above.
will be displayed in the input check routine. Note that the process is repeated in the input check routine of the input terminal K8, and when the designated digit becomes ゜゜0゛, the flow advances from flow 128 to the aforementioned flow 143, and a [Pset] check is performed. In this example, since '6P'' has been reset, the process advances to flow 144 and a [[PLAY]Set] check is performed.
In this example, where the flag [PLAY] is set in the flow 167, the flow advances to flow 187 and then flow 188, which will be described later. Then, the flow returns to l flow 125, and the input end K is centered on flows 132, 134, and 142 again.
8 will be displayed in the input check routine.
Next, when the operation knob 9 is set to the fast forward side (direction C in the figure),
As mentioned above, the fast forward switch 18b is turned on and the motor 1
Although the reel 9 rotates at high speed, it has no effect on the input/output of the arithmetic control section 36, so the display continues in the input check routine of the input terminal K8 and waits for the input of a reel rotation pulse.

Further, when the operating knob 9 is returned to the stop side (position A in the figure), the power switch 18a and the fast-forward switch 18b are turned off, the motor 19 is stopped, and the arithmetic control unit 36 performs the following processing. That is, when the designated digit is 7 digits, the input signal at the input terminal K8 becomes "0", and the [[
Reflow 1 by checking PRE (DIGIT) Set]
Proceed to step 34. This is flagged [PLA
This is because Y] is set. In flow 134, [K≧8] is checked and since K=0, the flow advances to flow 189. In flow 189, [DIGIT=5] is checked, and in this example where the designated digit is not 5 digits, the flow advances to flow 190. In flow 190, [DIGIT=1] is checked, and in this example where the designated digit is not a single digit, the flow advances to flow 191. In flow 191, [DIGITOFF] processing is performed, and the flow advances to flow 192. In flow 192, [PRE(DI
GIT) Reset] processing, that is, in this example, the flag [PLAY] is reset, and the flow proceeds to flow 193. In flow 193, [zero suppression release] processing is performed,
Proceed to flows 194 to 200, which will be described later, and proceed to flow 12.
Return to 3. Then, the tape count mode display cycle is entered, and as described above, the input check routine for the input terminal K8 and the input check routine for the input terminals Kl and K2 are alternately repeated to continue displaying the tape count value. next,
When the operation knob 9 is turned to the rewind side (direction D in the figure), the rewind switch 18c is first turned on, and then the power switch 1 is turned on.
8a is turned on and the motor 19 rotates at high speed. here,
If the rewind switch 18c and the power switch 18a are turned on at the timing when the digit signal D7 is being output from the arithmetic control section 36, the processing is performed in the following order. That is, flows 132, 142, 163,
Processes 164, 165, 166, and 167 are performed in order, and a flag [PLAY] is set in flow 167. In flow 168, [DIGIT=8] is checked, and if the designated digit is not 8 digits, the flow advances to flow 169. In flow 169, DISP8. . 110 Checks whether "" is set [[E,lSet], and if it is reset, the process advances to flow 170. Flow 170 [DIGIT=
7] Check and if the designated digit is 7 digits, proceed to flow 171. Flow 171 [6 → DIGIT]
processing, then proceed to flows 172, 173, and 174, respectively [DIGITON], [K8, K4, K
2, Kl-K] and [DIGITOFF], and then proceeds to flow 175. In flow 175, [K≧8] is checked in the designated six digits (according to flow 171), and if K≧8 (in this example, K=8), the process proceeds to flow 201. In flow 201, [PRE(DIGIT)Set
] processing, that is, in this example, sets the flag [RE■], recognizes that it is in the rewind state, and proceeds to flow 17.
Proceed to step 6. In flow 176, it is checked whether the flag [SET] is set, that is, whether it is recognized that the tape counter value has been set.
SET], and if it is not recognized (reset), the process advances to flow 177. In flow 177, the flag [
N] is set, that is, whether the operation of the number keys (9) to (9) on the keyboard 4 is recognized. [[N'1Set]
However, if it is not recognized (reset), proceed to flow 17.
Proceed to step 8. In flow 178, it is checked whether the flag [ST] is set, that is, whether it is recognized that the tape start position has been set.
ST'1Set], and if it is not recognized (reset), the process advances to flow 179.

In flow 179, it is checked whether the flag [SUB] is set, that is, whether the tape running amount counting process is set as subtraction mode.
[Set], and if it is not set, flow 18
Go to 0. In flow 180, check whether the flag [RE■] is set [[REV]Set]
However, if it is set, the process advances to flow 202. In flow 202, it is checked [[NOC]Set] whether a flag [NOC], which will be described later, is set.
If it is set, the process advances to flow 203, and if it is set, the process advances to flow 203a. flow 20
In step 3, the flag [NOC] is set, and in flow 203a, the flag [NOC] is reset, and in either case, the process proceeds to flow 204.

In flow 204, the flag [SUB] is set and flow 2
Proceed to 05.

In flow 205, it is checked whether the flag [CUE] is set, that is, whether the fast forward state is recognized.
Proceed to. In flow 206, [[ST]Set] is checked, and if it has been reset, the flow advances to flow 186, where the [[ST]Reset] process is performed, and the flow returns to flow 123. Here, the above flag [S[-JB] is provided for the purpose of reliably counting the generated pulses even if the reel continues to rotate due to inertia when the operation knob 9 is returned to the stop side. It is something. That is, the flag [SUB]
is set when the operation knob 9 is turned to the rewind side, and reset when it is turned to the playback side. This flag θ[S[-JB
] Depending on the state, the arithmetic control unit 36 determines whether the counting process of the tape travel amount is in the subtraction mode or the addition mode, as described above.

That is, the set state is, for example, a subtraction mode, and the reset state is, for example, an addition mode. Next, the calculation control section 36
When the digit signal D6 is being output from the rewind switch 18c and the power switch 18,
If a is turned on, flow 132 to flow 170
Up to this point, processing is performed in the same procedure as at the timing when the digit signal D7 is output.

In flow 170, check [DIGIT=7],
If the specified digit is not 7 digits as in this example, flow 20
Proceed to step 7. In flow 207, [DIGIT=6] is checked, and if the specified digit is 6 digits, the same procedure as described above is performed from flow 201 to flow 123. However, in flow 167, the flag [REV] is set (in the example, the flag [PLAY] is set),
In flow 201, the flag [PLAY] is set (in the example, the flag [REV] is set). Similarly to the above example, the flag [NOC] and flag [SUB] are also set, and in either case, the tape count value is displayed in the input check routine at the input end K8 until the reel rotation pulse is input. Note that the power switch 18a
As mentioned above, when the power switch 18a is turned on, the transistors 55 and 58 are turned on at the same time (during a rewind operation, the rewind switch 18c is configured to turn on earlier or at the same time as the power switch 18a). This is because if the timing is off, the arithmetic control section 36 will be unable to correctly determine whether it is playback or rewinding, which will impede the control function of the arithmetic control section 36. When the operation knob 9 is turned to the stop side again, the 4 power switch 18a and the rewind switch 18c are turned off, and when the designated digit is the 7th or 6th digit, the input at the input terminal K8 becomes ``0''. Flow 1 for reflow 132 and 134
89 to 200 are processed in order.

Here, in flow 194, a 3 [DIGIT=9] check is performed, and if the designated digit is not 9 digits, the process proceeds to flow 195. In flow 195, [DIGIT=8] is checked, and if the designated digit is not 8 digits, the flow advances to flow 196. Flow 196 includes flag [PLAY] and flag [
REV] Reset 4 [[PLAY] Resetl[R
E) [Reset], and as described above, the program proceeds to flows 197 to 200, which will be described later, and then to flow 123, and enters the tape count mode display cycle. Thus, the input check routine for the input terminal K8 and the input check routine for the input terminals Kl and K2 are alternately repeated to display the tape count value. Next, a method of counting and processing the amount of tape travel will be explained.

That is, as described above, the reed switch 34 is repeatedly turned on and off by the rotation of the take-up reel shaft 24a, and when the reed switch 34 is turned on, the key input section 39 outputs the digit signal D5 (hereinafter simply referred to as a reel rotation pulse) to the input terminal K8. ) will be output and counting processing will be performed. First, when the specified digit is 5 digits, flow 13
Proceed to 2,142,163. In flow 163, [DI
GIT=5] is checked, thereby checking whether the digit signal D5 has been input to the input terminal K8. If the designated digit is 5 digits, the process advances to flow 209.
In flow 209, as described later, it is checked whether the flag [NOC] is set.
], and if it is not set (reset), the process advances to flow 210.゜In flow 210, as described later, it is checked whether the flag [WON] is set.
[WONll)Set], and if it is not set (reset), the process advances to flow 211.

In flow 211, the flag [WON] is set [[WON]
[Set] and proceeds to flow 212. In flow 212, a [PRE (DIGIT) Set] process is performed, that is, a flag [REEL] is set, and it is recognized that the reed switch 34 has been turned on, and the flow proceeds to flow 213. In flow 213, [4→DIGIT] processing is performed, and the flow advances to flow 139, where the input check routine for input terminal K8 is entered again and display continues. In this way, when the reed switch 34 is turned on for the first time, the flag [WON] and the flag [REEL] are only set, and the display does not change.

Next, when the reed switch 34 is turned off, the input voltage at the input terminal K8 becomes "0" when the designated digit is 5 digits, so the flow 1
Proceed to 32, 134, 189.

In flow 189, check [DIGIT=5],
When the designated digit is 5 digits, the process advances to flow 214. flow 214
Now, perform the [PRE(DIGlT)Reset] process, that is, reset the flag [REEL], and then reset the reed switch 3.
4 is turned off, and the process proceeds to flow 215. In flow 215, check [[NOc')Set],
If not set (reset), flow 216
Proceed to. In flow 216, the pause count value described later is set to ゜゜0゛ [0-+POOUNT], and flow 21
Proceed to step 7. In flow 217, a [[S]Reset] process is performed, and the process proceeds to flow 213, which then proceeds to the input check routine of input terminal K8. Next, reed switch 34 again
When turned on, when the specified digit is 5 digits, the input of input terminal K8 becomes 1'', that is, K=8, so flows 132, 142,
Proceed to 163, 209, 210, 164, 165, 1616.

In flow 166, check [DIGIT=5],
If the designated digit is 5 digits, the process advances to flow 218. flow 2
At 18, set the flag [REEL] [[REEL,
lset] and proceeds to flow 219. In flow 219, the flag [WON] is reset.
t] and proceeds to flow 220. In flow 220, check whether the flag [SUB] is set [[
SUB]Set], if set, proceed to flow 221; if reset, proceed to flow 22
Proceed to step 2. - In the above flow 221, the tape running amount is subtracted by subtracting the contents of DISPREC by 1 [DISPRICC-1 → DISPREC]
The process then proceeds to flow 223. On the other hand, in flow 222, Dl
By adding “+1” to the contents of SPREC, the tape running amount is added and counted [DISPREC+1-DI
SPREO] and proceeds to the flow 223 described above. flow 22
In step 3, as will be described later, it is checked whether the flag [STOP] is set [[STOp')Set], and if it is reset, the flow advances to flow 224. In flow 224, check [[CUE]Set],
If it has been reset, the process returns to flow 123 and proceeds to the input check routine for the input terminal K8. Then, when the reed switch 34 is turned off again, the same processing as when the reed switch 34 was turned off the previous time is performed. That is, in the flow 214, the flag [REEL] is reset and the input check routine for the input terminal K8 is entered, and the display continues. In this way, when the reed switch 34 is turned on and off twice (the take-up reel base 24 rotates once), the tape running amount (tape count value) increases by +1 depending on the state of the flag [SUB].
゛ or ゜“-1゛ will be counted.

FIG. 13 is a timing chart showing the counting process at L5. That is, FIG. 13a shows the operation of the take-up reel stand 24, and FIG. 13b shows the on-off state of the reed switch 34 as the take-up reel stand 24 rotates.
Further, FIG. 13c shows an input signal at the input terminal K8 synchronized with the digit signal D5, which is output from the key input section 39 as the reed switch 34 is turned on and off.
FIGS. 13D and 13e show the state of the flag [WON] corresponding to the input signal at the input end' during playback (when the operating knob 9 is in position B or direction C in the figure) and the tape count corresponding to this flag [WON]. It shows the value. Also, Figure 13 F
, g indicate the flag [WON] state and tape count value at the time of rewinding (when the operating knob 9 is in the direction of D in the figure). By the way, in this embodiment, as shown in FIG. 13, when the number of revolutions of the take-up reel stand 24 is ``N'', correction is made so that the tape count value becomes ``N'' both during playback and during rewinding. The amount of tape travel is being counted.

The method of correction will be described in detail below with reference to the timing chart of the counting process shown in FIG. That is, the figure a shows the rotational speed of the take-up reel stand 24, and the figure b shows the on-off state of the reed switch 34. Also,
The figure c shows the flag [S$] and the flag [W] in the playback state.
ON], flag [NOC], and tape count status. Now, if playback/stop/playback/stop is repeated frequently, the operation knob 9 may not be locked at the stop position and may end up being pushed to the rewind side. For example, a case will be described in which the above operation is performed at position 1 shown in FIG. 14c during reproduction. That is, the flag [
SUB] and flag [NOC] are reset, flag [
WON] is set and the tape count value is "N" (position 1 in the figure). If you go back 5 times from playback, if the designated digit is 6 digits, the flow advances to flows 132 and 142, and then flows 164 to 170. , and further flows 207, 20
Processing is performed in the order of 8, 201, 176-180, 202-206. At this time, in flow 167, the flag [REV
], flag [PLAY] in flow θ201, flow 20
3 is the flag [NOC], flow 204 is the flag [SUB]
] are set respectively. Next, reed switch 3
When 4 is turned on, flow 132,1 is executed when the specified digit is 5 digits.
Processing is performed in the order of 42, 163, 209, 212, and 213. Here, in flow 212, the flag [REEL]
is only set, and no counting process is performed even though the flag [WON] is set. Therefore, the tape count value remains at N. Next, when the reed switch 34 is turned off, processing is performed in the order of flows 132, 134, 189, and 214 when the designated digit is 5 digits. In the flow 214, [PRE(DIGIT)Res
et] process, reset the flag [REEL], and proceed to flow 215. In flow 215, [[NOc'
) Set] is checked, and if the flag [NOC] is set, the process advances to flow 225. flow 225
Now check [[WON]Set] and set the flag [WON]
ON] is set, the process advances to flow 226. In flow 226, the flag [WON] is reset [[W
ON]Reset] and the process advances to flow 216, whereupon processes in flows 216, 217, and 213 are performed in this order. The flag [SUB] and the flag "WON" in this rewind operation
”, flag [NOC] and tape count status to the first
Shown in Figure 4d. Now, when the operation knob 9 is set to the stop side at the J position shown in FIG.
Processing is performed in the order of 9 to 196.

Flow 196 includes flag [PLAY] and flag [
REV] Reset [[PLAY]Resetl[RE
V]Reset] and proceed to flows 197 to 200, which will be described later.
and proceed to the tape count mode display cycle. Then, when the operation knob 9 is turned to the playback side. When the specified digit is 7 digits, flows 132, 142 and flows 163~
Processing is performed in the order of 179. At this time, flow 167
Then, the flag [PLAY] is set. In the above flow 179, [[SUB]Set] is checked, and if the flag [SUB] is set to 3, flow 227
Proceed to. In flow 227, check whether the flag [NOC] is set [[NOC') SeO,
If it is set, the process advances to flow 227. In flow 227, the flag [NOC] is reset [[NOC]
4reset] and proceeds to flow 180. flow 180
Now check [[REV]Set] and set the flag [R
EV] is not set, the process advances to flow 181. In flow 181, the flag [SUB] is reset, and the following processes are performed in the order of flows 182 to 186.

Next, when the reed switch 34 is turned on in the above state, when the designated digit is 5 digits, the flow 132, 142, 163,
Processing is performed in the order of 209, 210, 211, and 212. At this time, a flag [WON] is set in flow 211, and a flag [REEL] is set in flow 212. Then, as described above, when the next reed switch 34 is turned on, the flag [WON] is reset and the tape count value is increased by "゜+1."
], flag [WON], flag [NOC], and tape count status are shown in FIG. 14e. Next, at the K position shown in FIG. 14e, when the operating knob 9 is set to the rewind side, the flag [PLAY] and the flag [RE
V], flag [NOC] and flag [SUB] are set. Then, when the reed switch 34 is turned off, the same processing as when the reed switch 34 is turned off for the first time in the rewinding operation is performed, and the flag [REEL] and the flag [WON] are reset.

Next, when the reed switch 34 is turned on, the same processing as when the reed switch 34 is turned on the first time in the rewinding operation is performed, and the flag [REEL] is set. Now, when the reed switch 34 is turned off again,
When the specified digit is 5 digits, flow 132, 134, 189, 2
14 are processed in order. In flow 214, [PRE(D
IGIT) Reset] process and set the flag [REEL
] and proceed to flow 215. Flow 215 checks [[NOC]Set] and sets the flag [NOC].
C] is not set, the process advances to flow 225. In flow 225, a [[WON]Set] check is performed, and if the flag [WON] has been reset, the process advances to flow 229. In flow 229, the flag [NOC
] is reset [[NOC]Reset], and then processing is performed in the order of flows 216 and 217. Thereafter, by repeating the ON operation of the reed switch 34, the flag [WO
The setting and resetting of [N] is repeated, and the flag [WON
] The subtraction counting process is executed according to the condition (when reset). The flag for the rewind operation described above [
SUB], flag [WON], flag [NOC], and tape count status are shown in FIG. 14f. Next, the 14th
Indicated L position in figure f (flag [SUB] is set,
Flags [REEL] [WON] [NOC] are reset)
Then, when you stop the rewinding operation and perform the playback operation again, when the specified digit is 7 digits, flows 132, 142 and 16
Processing is performed in the order of 3 to 179.

At this time, in flow 167, the flag [PLAY] is set. In the flow 179 described above, a [[SUB]Set] check is performed, and if the flag [SUB] is set, the flow advances to flow 227. In flow 227, [[NO
C]Set] is checked, and if the flag [NOC] is reset, the process advances to flow 228a. Flow 228a sets the flag [NOC] [[NOC]S
et] and proceeds to flow 180. In flow 180, [[
RE■]Set] is checked, and if the flag [REV] is not set, the process advances to flow 181 and the flag [SUB] is reset. Next, reed switch 3
When 4 is turned on, flow 132,1 is executed when the specified digit is 5 digits.
Processing is performed in the order of 42, 163, 209, and 212.
In this flow 212, a flag [REEL] is set. Next, when the reed switch 34 is turned off, the designated digit is 5.
Flow 132, 134, 189, 214, 21 when digit
Processing is performed in the order of 5, 225, 229, 216, 217, and 213, and the flag [REEL] is reset in flow 214, and the flag [NOC] is reset in flow 229. Thereafter, the setting and resetting of the flag [WON] is repeated by repeating the ON operation of the reed switch 34, and the addition counting process is executed according to the condition of the flag [WON] (when it is reset). Flag [SUB], flag [WON], flag [NOC] in the above playback operation
and the tape count state are shown in FIG. 14g. As explained above, in this embodiment, the state changes when the status flag (flag [SUB]) for determining whether calculation counting or addition counting is performed from set to reset or from reset to set (from set to reset). or set from reset) flag [NOC] is provided, and this flag [
While the flag [WON] is set, the counting process is not performed even if the flag [WON] is reset, thereby correcting the discrepancy in the tape count value during playback and rewinding in the conventional counting process described above. ing. That is, when the rotation speed of the take-up reel stand 24 is ゜゛N゛, the tape count value is controlled to become ゜゛N゛ during both playback and rewinding. WON] is reset by turning off the reed switch 34.Next, a method of setting the tape count value etc. by key operation will be explained.

In other words, in tape count mode, number key n-
(9), ゜゜R゛key 4a1 "゜S゛key 4b1゜゜S
The tape count value, playback start position, stop position, etc. can be set using the T key 4C1, ST0P key 4d, etc. For example, now the operating knob 9 is on the stop side, and the input end K centered on the flow 152
When a key is pressed at the timing of the input check routine for Kl and K2, the input contents of the input terminals Kl and K2 are stored in the arithmetic control section 36 in flow 150 or flow 153, and the flow advances to flow 152. In flow 152, [1≦K<3] is checked, and if 1≦K<3, the process proceeds to flow 230. In flow 230, it is checked whether the display cycle in the input check routine for input terminals Kl and K2 from designated digits ゛9゛ to ゛0゛ has been repeated twice [COU
NT=2], and if the count is ゜゜2゛, flow 23
Go to 1. In flow 231, [DIGITOFF] processing is performed, then in flow 232, [zero suppression release] is performed, and the process proceeds to flow 233. In flow 233, flag [A
FT] is set, that is, whether it is recognized that the operation knob 9 has just been set to the stop side [AFTset]. Flag [AF
T] is not set, the process advances to flow 234. In flow 234, a check is made to see if the "°R" key 4a has been pressed ("R" key), and if it has not been pressed, the flow advances to flow 235. In flow 235, it is checked [ESet] whether an error is displayed, and if no error is displayed, the process advances to flow 236. flow 2
36 shows the input contents of input terminals θKl and K2 and the specified digit (
Which key was pressed is determined based on the content of the digit signal (key selection). Note that if the count is not "2", the process proceeds to flow 406, where the count number is cleared (a) → COUNT), and the process proceeds to the flow 154, where the input terminal K is cleared.
The input check routine for K2 and the input check routine for input terminal K8 are alternately repeated. Then, when the key is released, 1≦K3 is no longer satisfied, so the flow advances from flow 152 to flow 154, and the input check routine for the input terminals K, , K2 and the input check routine for the input terminal K8 are alternately repeated. . However, the flow 162
The count increases by 1, and when the count reaches 2, the next key operation is accepted. First, setting of the tape count value will be explained.

For example, suppose that the recording is stopped once the tape count value is ゜゜50゛, and the calculation power switch 2 is turned off. In this state, if you wish to record again as a memo, for example, by turning on the calculation power switch 2 and performing the following operations, you can set the tape count value ゜゜50゛ and record. That is, when the number key (5) is pressed, the [key selection] process is performed in flow 236 as described above, and the process advances to flow 237. In flow 237, it is checked whether the flag [SET] is set, that is, whether the setting of the tape count value is recognized ([SET, lset]), and if it is not recognized (reset), Proceed to flow 238. In flow 238, it is checked [[N]Set] whether the flag [N] is set, that is, whether the pressing of the numeric key is recognized, but at this point, the flag [N] is not yet set. In this case, the process advances to flow 239. In flow 239. [0→
DISP8Oc] processing, that is, clearing the contents of DISPROc, and proceeding to flow 240. Flow 240 [
N-+DISPREC processing, that is, converting the value ゜“5゛”
Store it in ISPREC and proceed to flow 241. flow 2
41, the flag [N] is set [[N]Set] and the display cycle proceeds, and the numerical value "5" is displayed.Next,
When you press the number key 0, the above flow 236, 237, 23
Processing is performed in the order of 8. Flow 238 [[N']
Set] is checked, and at this time the flag [N] is
is set, the process skips 4 above flow 239 and proceeds to flow 240. Next, the process advances to flow 241, where the numerical value ゜"50゛ is memorized in DISPREC, and the numerical value ゛゜50゛ is displayed in the display cycle. Next, when the "゜S" key 4b is pressed, flow 236 to flow 242 is performed. Proceed to. In flow 242, a [[N,lreset] process is performed, the flag [N] is reset, and the flow proceeds to flow 243. In flow 243, [[CUE]Set] is checked, and if the flag [CUE] is not set, the flow advances to flow 244. In flow 244, the flag [STOP
] is set, that is, whether it is recognized that the stop position has been set.
STOP'3set], and if it is not recognized (reset), the process advances to flow 245. In flow 245, a [[SET] Set] process is performed to set a flag [SET]. That is, the calculation control unit 36 recognizes that the tape count value has been set. In addition, when the above display cycle is the second round, in flow 237, [[SET]Set
] is checked, and since the flag [SET] is set, the process advances to flow 237a. In this flow 237a, the tape count setting value is stored in TREC [DISPREO
→TRIELC] is done. By the way, if you notice a mistake in setting the tape count value after pressing the S key 4b, you can correct the tape count setting to the correct value by repeating the above operation. and press the “゜S゛” key 4b. This is the flag [N
] is reset (
Flow 242) is scheduled to be executed. In other words, if you operate the numeric keys again, flows 238, 239, 24
This is because the processing is performed in the order of 0, clearing the erroneous numeric value and entering the correct numeric value. Further, if the user accidentally presses the ゜゜S゛ key 4b when there is no need to set the tape count value, the important tape count value will be lost if the operation is continued. At this time, by pressing the ゜゛R゛ key 4a, the flag [SET] can be reset to protect the tape count value.
That is, in flow 234, the [“R゛key] check is performed, and if the 46R” key 4a is pressed, flow 246 is performed.
Proceed to. Perform [Ereset] processing in flow 246,
Proceed to flow 247. In flow 247, [[SET']
If the flag [SET] is set, the flow advances to flow 248. In flow 248, the flag [N] and flag [SET] are reset and the process proceeds to flow 122. However, in flow 122 [TR
By performing the EO → DISPREC process, ゜゜S
The tape count value at the time the key 4b is pressed is not displayed. If you notice a mistake in setting the tape count value after pressing a number key, press the clear key 4.
After pressing e, perform the correct number key operation again.
By pressing the "S" key 4b, the tape count setting value can be corrected. In other words, by pressing the clear key 4e, the process advances to flow 407, where the [N] Set check is performed and the flag [N] is set. If so, proceed to flow 408. In flow 408,
8. O] Perform processing and clear the erroneous value. As a result, if you perform the correct number key operation again, Flow 2
Processing is performed in the order of 38, 240, and the correct numbers are set. Next, setting of the stop position will be explained.

That is, the stop position during playback, fast forwarding, and rewinding is set by pressing the "STOP" key 4d.
For example, if you press any number key to set the number as described above and then press the "STOP" key 4d, the flow will proceed from flow 236 to flow 249. In flow 249, [[SET]
If the flag [SET] is not set, the process proceeds to flow 250, and if it is set, the process proceeds to flow 249a where the flag [SET] is checked.
tl [WONZresetNDISPREC-+T flower G
] After performing the processing, the process proceeds to flow 250. In this flow 250, the flag [N] and the flag [SET] are reset, and the flow advances to flow 251. In flow 251, set [[ST] Set] and proceed to flow 2; 2. In flow 252, a check is made to see if the ST key 4c is pressed (ST key), and if the STOP key 4d is pressed, the flow advances to flow 53.

In flow 253, a [[CuE') Set check is performed, and if the flag [CUE] is reset τ, the flow advances to flow 254. Flow 54 is DlSPp. cO value and T. T: A comparison of the magnitude with the value of C [DISPROO<
T8EC] is performed, and 1 of DISP8OO becomes TR. If the value is smaller than the value, proceed to flow 25 and set the flag [
BACK] is set [[BACK]Set], it is recognized that the stop position for rewinding is to be set, and the process proceeds to flow 256.

On the other hand, if the value of DISPREC is greater than or equal to the value of TREG, the process advances to flow 257 and the flag [BACK
] and proceed to flow 258.

In flow 258, [DISPREC=TREC] is checked. If the value of DISPREG is the same as the value of TREC, the flow advances to flow 259. In flow 259, the flag [STO] is set [[STOl]Set], and it is recognized that the start position and the stop position are equal, and the process proceeds to flow 256 described above. On the other hand, the value of DISPROO is TR2
If the value is not equal to 6, proceed to flow 260, reset the flag [STO],
It is recognized that the start position and the stop position are different (start position <stop position), and the process proceeds to flow 256 described above.

Flow 256 transfers the memory contents indicating the stop position of DISPREC to STOPR8C, which will be described later.
→STOPRO] and “゜1” in the 7th digit of DISPREC
It is recognized that the stop position has been set by storing [Set] the flag [STOP] and setting the flag [STOP]. Then, the process advances to flow 123 and enters the tape count mode display cycle, where the set value of the stop position and a symbol indicating the stop position, such as a keystroke, are displayed. This is a register of digits (1 digit code + 4 digits set value).

Next, setting of the playback start position will be explained.

That is, the start position during playback is set by pressing the "゜ST" key 4c.
When you press key 4c, flows 236, 249, 250,
Processing is performed in the order of 251, and in the flow 251, the flag [ST] is set, and the flow advances to flow 252. flow 2
In 52, 35 [゜゛ST゛ key] check is performed, and if the ゜“ST゛ key 4c is pressed, the process advances to flow 261. In flow 261, [DISPROO゛TREO] is checked, and the value of DISPROO is TROC. If it is smaller than the value, proceed to flow 262, store 40° "110r" in the 9th digit of DISPROO [ESet], treat it as an error, and perform [MSON] processing. The motor 19 is prevented from rotating even if the operation 9 is performed. In this case, an error means that if the operation knob 9 is set to the playback side, playback from the start position is not possible. This is to indicate that a return is necessary. On the other hand, if the value of DISPROO is smaller than the value of TROC, the process advances to flow 263 [DISPREC=TR5. ] Check. D.I.
If the value of SPREC is equal to the value of TREC, the flow advances to flow 264 and a [[STOP]Set] check is performed.
If the flag [STOP] is set, proceed to flow 265, set the flag [STO], and proceed to flow 2.
Proceed to 66. Further, if the flag [STOP] is reset, the process advances to flow 265a and the flag [STOP] is reset.
] and proceed to the above flow 266. flow 26
6, set the flag [NCUE] and
) Set] and TRO during playback.

It is recognized that the tape count value stored in the playback start position is equal to the playback start position, and the process proceeds to flow 267. Also,
DISPR5 in the flow 263 above. The value of TRE
If it is larger than C, the process advances to flow 266a and the flag [
NCUE] and proceeds to flow 267 above. In flow 267, check [[REC]Set],
If the flag [REC] is not set, the process advances to flow 268. In flow 268, the memory contents indicating the start position of DISPREC are transferred to STARTREG [
DISPRIll:C→STARTl. . ] and DIS
PRll: ゜“101” in the 8th digit of 10 - Memory CI
'Set] and set the flag [CUE].
Set] and proceeds to flow 269. Here, START
p. Oc is a 5-digit (code 1) where the playback start position is stored.
digit + set value 4 digits) register. In flow 269, [[STOP]Set] check 3 is performed, and the flag [[STOP]Set] is checked.
STOP] is reset, flow 132
The program advances to step 200, and enters the tape count mode display cycle, where the set value of the playback start position and a symbol indicating the start position, such as a keystroke ゛゛, are displayed.
3. If the stop position during playback has already been set, the flag [STOP] is set (flow 256), and therefore the result of the [[STOP] Set] check in flow 269 is shown in flow 270.
Proceed to. In flow 270, [STOPRO. 4lku ST
ARTREc] is checked, and if the value of the reproduction start position is larger than the value of the stop position, reproduction is impossible, and the process proceeds to flow 262, resulting in an error [ESet].

On the other hand, if the value of the stop position is greater than or equal to the value of the reproduction start position, the process advances to flow 271. flow 271
Then, [STOPREC=STARTROC] is checked, and if the value of the stop position and the value of the playback start position are equal, the process advances to flow 272 and sets the flag [STO], and if they are not equal, the process advances to flow 273. Reset the flag [STO] and proceed to flow 1 in either case.
Proceed to step 23.

Further, the order of setting O for the stop position and the playback start position may be either first.

That is, if the playback start position is set and then the stop position is set, flows 236, 249, 250, 251
, 252, and 253, and in flow 253, [[C
UE'3Set] is checked and flag 5 [CUE
] is set (flow 268), flow 2
Proceed to step 74.

In flow 274, [DISPREC<STARTREO
] Check. This means that the playback start position has been set, which indicates that the value of DISPREC is greater than, equal to, or equal to the value of TREC, so it is only necessary to compare the value of DISPREC with STARTRsc. It turns out. In other words, DISPR. If the value of STARTREc is smaller than the value of STARTREc, playback becomes impossible, and the process proceeds to flow 262 where an error [Eset]
becomes. On the other hand, the value of DISPRIELC is STARTR
If the value is greater than or equal to the value of Ec, the process advances to flow 275 and a [DISPROO=STARTREc] check is performed. If the value of DISPR6C and the value of STARTROO are equal, proceed to flow 259 and flag [STO]
and if they are not equal, proceed to flow 276;
Reset the flag [STO] and proceed to flow 256 in either case. In flow 256, similar to the above [DI
SPREO → STOPRO], [''Set] and [[
STOP]Set] and proceed to the display cycle. As explained above, in this embodiment, when the ``゜ST'' key 4c or the ゜ST0P'' key 4d is pressed, the flag [ST] is set, and preparations are made to display the lock and key functions, respectively. However, each STARTRO
.

, STOPREC, and displayed in the tape count mode display cycle. At this time,
Needless to say, setting values indicating the playback start position or stop-H position are also displayed corresponding to the above display contents. Next, the set values of the playback start position and stop position can be canceled and the error can be canceled using the "°R" key 4a.

First, if you press the "゜R゛" key 4a when the playback start position and stop position have been set, the above flow 234
, 246, and 247 are performed in this order, and the process advances to flow 277. In flow 277, a [[CUE]Set] check is performed, and if the flag [CUE] is set (flow 268), the flow advances to flow 278. flow 278
CISv4F'0FF "Resetl[NCUE]"
ノ [C tumor] [STO]ResetsTOPREO→S
TART8Ec] and proceeds to flow 279. In flow 279, a [[ST]Set] check is performed, and if the flag [ST] is set (flow 251), the flow advances to flow 280. In flow 280, [0 → STO
PRECl”Resetl[BACK][STOP]R
eset] process and proceeds to flow 281. flow 28
In 1, [[NCUE][CUE][STO]Reset
l"ResetsTOPREC→STARTRO6, M
FOFF] processing and proceeds to flow 248. flow 2
48, [[N][SET][ST')Reset. ．．
Preset. ．． MSOFF] processing is performed, and the flow advances to the flow 122 to enter the display cycle. That is, when the ゜゛R゛key 4a is pressed, "0000゛" is stored in the 8th and 7th digits of DISPROc ("゜"゛゜''''゛ is reset), and STOPRO. The memory contents of STARTROc and STARTROc are cleared, and the flag [CUE] and flag [S
TOP], flag [BACK], flag [STO], flag [NCUE], and flag [ST] are reset and the set values are canceled. Therefore, the memory content of TREO is DISPR6. (Flow 122), and the tape count value will be displayed. Next, in the case of an error, press the "R" key 4a, and in the flow 251,
eset] process and write ゜“ in the 9th digit of DISPREC.
0000'' is stored, and the error display and set value are cleared. Here, only the ゛R゛ key 4a can be accepted as a key operation in case of an error, and the error display will not be erased in the case of other key operations. This is flow 234
Check the [R key], and if it is not the R key, proceed to flow 235 and check [Eset], and if an error is displayed, proceed to flow 1.
This is to proceed to step 23 and continue with the error calculation. Next, the operation of the operating knob 9 after setting the tape count value, playback start position, and stop position will be described.

For example, if you move the operation knob 9 to perform playback (recording) or rewinding operations after setting the tape count value, the [[SET]Set] check is performed in the flow 176, and the flag [SET] is set ( Flow 245) If so, proceed to Flow 282. In flow 282, [[SE
T] [WON] Reset] processing and flag [SE
T] and flag [WON] are reset and flow 17
Proceed to step 7. In flow 177, [[N'1Set] is checked, and flag [N] is set (flow 2
41) If so, proceed to flow 283. In flow 283, the flag [N] is reset [[N]Reset], and the flow advances to flow 284. In flow 284, [TREC4DI
SPREC] processing) and the tape count value stored in TREC is transferred to DISPREO. However,
When the reel rotation pulse is input, counting processing is executed for the tape count setting value (DISPREc) in the flow 221 or 222.Next, the case where the playback operation is performed after setting the playback start position will be explained in detail. explain.

That is, when the playback operation is performed, the process advances seven times in the order of flows 182 and 183. In this flow 183, [[CuE,
) Set] check is performed, and if the flag [CUE] is set (flow 268), the process advances to flow 285. In flow 285, [[NCUE′)Set] is checked, and if the flag [NCUE] is set, θ
If not, the process advances to flow 286. In flow 286, [
MFON] processing, the motor 19 is rotated at high speed, and the process proceeds to flow 186. In flow 186, [[ST] Rese
t] process and reset the flag [ST]. Then, the reel rotation pulse is input! 5, addition and counting processing is performed, and the processing proceeds in the order of flows 223 and 224. In this flow 224, [[CUE]Set] is checked, and the flag [CUE] is set (flow 26
8) If so, proceed to flow 287.

In flow 287, JOCSTARTROc=DISPR
EO] is checked, and as long as the tape count value does not match the set value of the playback start position, the addition counting process continues and a new tape count value is displayed. When the tape count value matches the set value of the playback start position, the process advances to flow 288 [[CUE″)Set]
If the flag [CUE] is set (flow 268), flow 289 is approached. Flow 289 checks [[STO')Set], and if the flag [STO] is not set, flow 2
Proceed to 90 ["Reset..MF'0FF1[CUE
] [STO] Reset] processing is performed, the motor 19 rotates at a constant speed, the start position setting display ``['' disappears,
Flag [CUE] is reset and flow 291, 123
Proceed to. In flow 291, [STOPRO. -STAR
Tp. EO] processing is performed and STOPR9. The stored contents are transferred to STARTREO, and playback starts from the set value of the playback start position. Also, the setting value of the playback start position is equal to the tape count value (flag [
When a reproduction operation is performed at the time of [NCUE] set), the processing first proceeds in the order of flows 183 and 285. In flow 285, [[NCUE]Set] is checked and the flag [[NCUE]Set] is checked.
NCUE] is set, the process advances to flow 292.

In flow 292, [[CUE][NCUE')Rese
tl "Reset" processing is performed, the flag [CUE] and the flag [NCUE] are reset, the start position setting display "1" disappears, and the flow advances to flow 184.

Next, processing is performed in the order of flows 185, 186, and 123, and in flow 185, the storage contents of STOPROC are changed to STA.
The data is transferred to RTREc, and playback starts from the set value of the playback start position. On the other hand, when a rewinding operation is performed, the flow advances to flow 205 and a [[CuE') Set] check is performed, and if the flag [CUE] is set (flow 268), the flow advances to flow 262.

Flow 262 is [MSON. ．． Eset] processing and proceeds to flow 293. Flow 293 Teha [[PLAY
') Set] is performed, and if the flag [PLAY] is set (flow 167), flow 29 is executed.
Proceed to step 4. Flow 294 is [MSON. ．． pset]
Processing is performed and the process proceeds to flow 295. In flow 295 (
b) → STOP8. . ] Process is performed and the process advances to flow 296. In flow 296, [”Resetl[BACK]
[STOP]Reset] processing is performed, and the processing is then performed in the order of flows 290, 291, and 123. As a result, the set value is canceled, the motor 19 stops, and the DISPRE
4110F'C'E'2) is stored in the 9th digit of C, and "1010"('P') is stored in the 6th digit, and a display cycle begins. Therefore, the character ゜゛E゛ indicating an error is displayed in the 9th digit of the display section 5, and the character ``゜P.゛'' is displayed in the 6th digit.In this case, the error is displayed in the This is to indicate that playback from the start position is not possible even if the return operation is continued.Also, the above characters "P. The purpose of this display is to inform that the motor 19 is stopped despite the operation of the operation knob 9 (in this example, a rewind operation). Also, this ゜゜P.゛Display is Flow 137 or Flow 15 when ゜"P" is set (R=10).
This is done by setting the flag [S] at step 6. Note that in the event that the "P."
t,sMPOFF] processing is performed, ゜“E゛” and ゜゜P゛ are reset and turned MSOFF.

Next, a case will be described in which the operating knob 9 is operated after setting the stop position.

That is, when the operation knob 9 is moved to perform a playback (recording) operation or a rewind operation, the [TREO
→DISP8EG] Process. Then, the tape count value (contents of TROa) is transferred to DISP8EC,
Also, in flow 185, the memory contents of STOPREC are ST
Transfer to ARTREc [STOPRELO → STARTR
OO], and then, in flow 186, the flag [ST] is reset [[ST]Reset]. When the reel rotation pulse is input here, a counting process is performed in flow 221 or flow 222, and the process proceeds to flow 223. In flow 223, [[STOP]Set] is checked, and the flag [STOP] is set (flow 256).
If so, proceed to flow 287. In flow 287, [ST
ARTRIllO=DISPROC] is checked, and if the value of STARTREO, that is, the stop position setting value (according to flow 291) matches the value of DISPREC, that is, the tape count value, the process advances to flow 288. In flow 288, [[CUE3set] is checked, and if the flag [CUE] is not set, "This is flow 2.
Proceed to 97. In flow 297, ZCST, lreset
] processing, and the following flows 294, 295, 296
, 290, 291, and 123 in this order. This causes the motor 19 to stop and ゜゜P?゛ will be displayed, the set value will be canceled, and the ゜ blasphemy display will disappear. Also, the set value of the stop position is equal to the tape count value (flag [
When the operation knob 9 is operated when the [STO] is set), the flow 184 or the flow 184a is performed.
, lSet] is checked, and if the flag [STO] is set, the flow advances to flow 298.

In flow 298, [[ST')Reset] processing is performed, and the following flows 2J94, 295, 296, 290,
Processing is performed in the order of 291 and 123. This allows motor 1
9 does not rotate (remains stopped) and "P." is displayed. Also, when the set value of the playback start position is greater than the tape count value (flow 268 sets the flag [CUE])
When rewinding is performed on the set), the process proceeds to the flow 205, and the following flows 262, 293, 294, 295, 2
Processing is performed in the order of 96, 290, 291, and 123.
As a result, ゛゛゛ and ゛゜P. When a playback operation is performed, the process proceeds to the flow 182 and a [[BACK]Set] check is performed, and the flag [BACK] is set (flow 25).
5) If so, proceed to flow 262. Below is flow 293
, 294, 295, 296, 290, 291, and 123 are performed in this order, and "゜E゛" and "゜゜P." are displayed as above, and the motor 19 remains stopped.

Furthermore, if the rewinding operation is performed when the set value of the stop position is greater than the tape count value (the flag [BACK] is reset by flow 257), the flow 205, 206
, 184a, and the process advances to flow 409.
In flow 409, a [[BACK]Set] check is performed, and since the flag [BACK] has been reset, the flow advances to flow 262. Below flow 293, 294, 295
, 296, 290, 291, and 123 are performed in this order, and ``E'' and ``゜P?'' are displayed as above, and motor 1 is
9 remains stopped. Next, a case will be described in which the user operated the operation knob 9 without noticing an error during setting by key operation. First, an [ESet] check is performed in flow 169, and in the case of an error, flow 299 is approached.
In flow 299, [TREC → DISPRIllO]
Processing is performed, and the following flows 294, 295, 296
, 290, 291, and 123 are processed in this order. This transfers the tape count value to DISPREC,
The motor 19 remains stopped and “゜E゛” and “P”
．．゛ is displayed. Then, when the operation knob 9 is returned to the stop side, in the flow 198, ゜"E゛" and ゜"P" are reset and turned MS OFF. In addition, in this example, ゜゜P. To cancel the error when ゛ is displayed, turn the operation knob 9 to the stop side, and to cancel the error when ゜“P.゛ is not displayed, press the ゜゜R゛ key 4 as described above.
This is done by pressing a. Next, canceling the setting of the playback start position after operating the operation knob 9 will be explained. In this embodiment, as described above, playback is fast-forwarded to the playback start position, and then playback is started from the playback start position. However, the content you want to hear may appear during fast forward playback, and in this case, by turning the operation knob 9 to the stop position and pressing the "R" key 4a, you can play without canceling the set value of the stop position. The start position can be canceled. That is, when the 6R'' key 4a is pressed, the [Ereset] process is performed in the flow 246, and the flow advances to the flow 247.
In flow 247, [[SET] Set] is checked, and if the flag [SET] is not set, the flow advances to flow 277. In flow 277, [[CUE′)Se
t] is checked, and if the flag [CUE] is set (flow 268), the process advances to flow 278. In flow 278, [MFOFF1Resetl[NCU
E] [CUE] [STO') Reset. ．． STOPR
Ea→STARTREc] processing and proceeds to flow 279. In flow 279, [[ST]Set] is checked five times, and if the flag [ST] is reset (flow 186), the process advances to flow 248. In flow 248, [[N][SET][ST]Reset. ．． pres
etc. ．． MSOFF] processing and proceeds to flow 122. This causes STOP. The memory content of is ゛θSTAR
It is transferred to TRO6, and the set value of the playback start position is canceled, but the set value of the stop position is stored and protected in STARTROc.

In addition, the "" display will disappear. Furthermore, when the operation knob 9 is set to the playback side, the "STARTR" display will disappear in flow 287.
Ec=DISPREC] is checked, and playback is performed up to the stop position. Next, protection of the stop position set value after operating the operating knob 9 will be explained.

For example, there are times when you may miss something during the playback operation and want to listen to it again. In such a case, an error occurs every time the rewind operation is performed, and it is very inconvenient to set the stop position again. In this embodiment, at the stage of operating the operation knob 9 after setting by key operation, the tape count value and the set value are compared,
Although error detection is performed, the set value is protected after the operation knob 9 is operated. In other words, perform the playback operation after setting the stop position, and press the operation knob 9 once before reaching the stop position.
When CDISPR is set to the stop side, in the flow 199, CDISPR
EC→T8Ea] process, and tape count value (DI
SPREO contents) are transferred to TREC.

Then, when you turn the operation knob 9 to the rewind side and try to rewind the part you missed, in flow 206, [[ST
[Set] is checked, and if the flag [ST] is reset (flow 186), the flow advances to flow 123 and a display cycle is entered, and the set value is protected. At this time, the flag [NOC] and flag [NOC] that control the counting process are
SUB] are set in flow 203 and flow 204, respectively. Note that if the flag [ST] is set during the check in flow 206, the flow advances to flow 262 and an error occurs. In this way, the flag [ST
] is used to determine whether or not it is necessary to detect an error. However, as mentioned above. If the operating knob 9 is operated during a playback operation after the stop position is set, the flag [ST] is always reset in flow 186, so no error occurs. Next, the three flags [AFT] that are set when the operating knob 9 is set to the stop side will be explained.

Generally, the take-up reel stand 24 rotates slightly due to inertia even after the operation knob 9 is set to the stop side, so the reed switch 3
If you switch to the stop side just before 4 turns on, flow 19
TR4 memorized at 9 [DISPREC-+TROO]
The contents of the EC and the tape count value (the contents of DISPREC) no longer match. This is because even after the arithmetic control unit 36 recognizes the stoppage (flow 200), the take-up reel stand 24 rotates due to inertia, the reel rotation pulse is input, and the counting process continues according to the conditions of the flag [SUB]. It is. Therefore, when a key is operated, check 7 [CAF'T) Set] to see if the flag [AF'T] is set in the flow 233, and then set the flag [AF'T].
AFT] is set (flow 200), the process advances to flow 300 and the next process is performed. That is, in flow 300, [[AFT]Reset. ．． DISP8.
. →T8. . ] process and reset the flag [AFT]. At the same time, the correct tape count value (DISP
R.O. ) is transferred to TROO and stored. Next, error display during recording operation will be explained.

The recording operation in this embodiment is possible by pressing the recording button 10 and turning the operating knob 9 to the playback side, and the control over the stop position is the same as in the case of the playback operation. However,
If the control for the playback start position is the same as that for the playback operation, the motor 19 will rotate at high speed up to the playback start position (flow 286), making normal recording impossible. Therefore, in this embodiment, if the recording button 10 is operated while the playback start position is set, it is treated as an error and the already recorded content is protected. That is, when the recording button 10 is pressed, the input at the input terminal K8 becomes ゜゜1゛ (K=8) when the designated digit is 8 digits, and the flow is 132, 142, 163, 164, 165.
, 166, and 167 in this order. This flow 167
Then, a [PREDIGIT')Set] process is performed, a flag [REC] is set, and the flow advances to flow 168.

In flow 168, check [DIGIT=8],
If the designated digit is 8 digits, the process advances to flow 301. flow 3
In step 01, the [[C[JE3set] check is performed, and if the flag [CUE] is not set (the playback start position is not set), the process advances to flow 123, and recording is performed as described above. On the other hand, flag [CU
E] is set (the playback start position is set), the steps from flow 301 to flow 262 are performed.
Proceed to the following flow 293, 295, 296, 290
, 291, and 123 in this order. This allows ゜゛E
is displayed, and even if the operation knob 9 is set to the playback side, the same process will be performed as in the case where the knob operation is performed without noticing the above-mentioned error in setting by key operation.

That is, the motor 19 does not rotate and remains stopped.
Next, an error when setting a playback start position after a recording operation will be explained.

Up to now, a case has been described in which the recording button 10 is operated after setting by key operation 4, but it is also possible to operate recording button 10 and then performing setting by key operation. but,
Since setting the playback start position causes the above-mentioned problem, an error occurs only in this case.
That is, when the playback start position is set after pressing the record button 10, the [[REC]Set
] is checked, and if the flag [REC] is set (flow 167), the process advances to flow 262 and an error occurs. Further, when the recording button 10 is pressed while fast forwarding to the playback start position is being performed by the playback operation (the flag [C[JE] is set), the following processing occurs. That is, in the flow 301, [[CUE)Set]
If the check is performed and the flag [CUE] is set (flow 268), flows 262, 293, 2
Processing is performed in the order of 94, 295, 296, 290, 291, and 123. The motor 19 then stops rotating, and "E゛,゜゜Pj゛" is displayed.

Next, a temporary stop operation using the pause (decimal point) key 4q will be explained.

That is, it is possible to stop the saw by pressing the pause key 4q during the reproduction operation. For example, if you press the pause key 4q now, if the designated digit is 1 digit, the input at the input terminal K8 will be "゜1゛" (K = 8), and the flows 132, 142,
163, 164, 165, 166, 167, 168, 1
Processing is performed in the order of 69, 170, and 207.

In the above flow 167, the [PRE (DIGIT) SeO process is performed and the flag [POINT] is set. Also,
In flow 207, check [DIGIT=6],
In this example where the designated digit is one digit, the process advances to flow 302. In flow 302, a [[PLAY]Set] check is performed, and if the flag [PLAY] is set (flow 167), the flow advances to flow 303.

In flow 303, (j [Pset] is checked, and if 4゜P'1 has been reset, the process proceeds to flow 304. In flow 3 [4, [Pse\MSON] is processed,
Proceed to Flo 123. As a result, ゜゛P. is displayed and the rotation of the motor 19 is stopped. Next, pause key 4
When q is released, the input at input end K8 will be “
゜0゛(K=0), and flows 132, 134, 18
Processing is performed in the order of 9 and 190. In this flow 190,
DIGIT=1] is checked, and in this example where the designated digit is one digit, the process proceeds to flow 305. flow 305
Now perform the [PRE (DIGIT) Reset] process,
The flag [POINT] is reset and the process proceeds to flow 139, and the display of "゜P.゛" continues.
When you press the pause key 4q again, if the specified digit is 1 digit, input ant? The input of 8 is “゜1゛(K=8)” Reflow 13
2,142,163,164,165,166,167
, 168, 169, 170, 207, 302, and 303 are processed in this order. In the above flow 167, [PRE(DI
GIT)Set] and sets the flag [PO[NT] again.

Also, in flow 303, [Pset] is checked and “
If P' is set (flow 304), the process advances to flow 306. In the flow 306, [Preset. s
MSOFF] processing and proceeds to flow 123. As a result, the "P." display disappears, the motor 19 starts rotating, and playback is performed.As explained above, the pause (
By repeatedly pressing the decimal point) key 4q, it is possible to perform pause-playback→pause-playback... Next, the tape end auto-stop function will be explained. That is, in this embodiment, when the tape is rewound to the starting end or when the tape is played back to the end, it is detected that there is no rotation of the take-up reel stand 24, and the rotation of the motor 19 is stopped. ．．゛ is now displayed. For example, when rewinding or playing is performed by operating the operation knob 9, counting processing is performed in flow 221 or flow 222, and the flow advances to flow 123 to display the display cycle according to the input check routine of the input terminal K8. is repeatedly executed from the 9th digit to the 1st digit, and the contents of DISPREO are displayed on the display section 5. Then, when the specified digit becomes ゜"O", the process advances to flow 143 to check [p'Set], and if ゛゜P゛ has been reset, the process advances to flow 144.Flow 144
If the flag [PLAY] is set, check [[PLAY')Set], and if the flag [PLAY] is set, the
Proceed to. In flow 187, [PCOlJNτ+1 → PC
OUNT] processing, increment the contents of PCOUNT by +1, and proceed to flow 188. In flow 188, [PO.
UNT=200] is checked, and unless the content of PCOUNT reaches 6°200, proceed to flow 125.
The display cycle based on the input check routine for the input terminal K8 is performed again. Then, if the rotation of the take-up reel stand 24 stops and no new signal is input to the input terminal K8, the contents of PcOUN, are incremented by +1 in the flow 187. That is, the reel rotation pulse is input Otherwise, the content of PO.i, will continue to increase.However, when the content of PcOi reaches "200", flow 18
8 to flow 307, and a [[REV]Set] check is performed. If the flag [REV] is set, that is, in the case of rewinding, the process proceeds to flow 308, where a flag [FO] (described later) is set [[FO')Set], and the process proceeds to flow 309. On the other hand, if the flag [REV] has been reset, that is, in the case of reproduction, the flow 308 is skipped and the flow proceeds to flow 309. In flow 309, [MSON. ．． pset] processing, the motor 19 is stopped, and "P." is displayed.In this embodiment, the input check routine for the input terminal K8 and PO.

It takes about 6 to process the routine that makes UNT '4+r'.
Since it takes a time of rrLs, the fact that the contents of PCOUNT become 200° means that about 1.28 times have elapsed since the last reel rotation pulse was input. Here, the time required for the take-up reel stand 24 to rotate once is usually 1. At mark 2, as long as the take-up reel stand 24 continues to rotate, reel rotation pulses are input to the calculation control unit 36 at intervals of 0.3 seconds. Therefore, the above P
The content of COUN, becomes “゜200゛”.
This clearly indicates the end of the tape. 3. Even if the rewind operation is performed without a magnetic tape attached, the take-up reel stand 24 does not rotate, so the motor 19 stops in the same way as in the case described above, and it is possible to confirm that no magnetic tape is attached. I can let you know.
4 On the other hand, take-up reel stand 2
4 is rotating (not at the end of the tape), in flow 216 when the reed switch 34 is turned off,
0→PCOUNT] processing to clear the contents of PCOUNT. Therefore, the reel rotation pulse is normally 0. If it is entered in the @ interval, it is PO. U
The contents of NT will never reach the state of ``6200'' and the motor 19 will not stop. In this embodiment, when operating the operating knob 9, a signal is inputted from the key input unit 39 to the arithmetic control unit 36 at the timing when the power switch 18a is turned on. There is. This is to prevent a phenomenon in which if the timing of turning on the power switch 18a is delayed, the start of rotation of the motor 19 will be delayed and the above-mentioned function will be activated and the motor 19 will stop. Next, the role of the flag [FO] during auto end stop will be explained.

In other words, as mentioned above, when the tape rewind operation is performed to the beginning of the tape, the tape end stop function is activated and the flag [FO] is set. When you return it to the side, DISP
The contents of REC are cleared and the tape count value automatically becomes ``0''.This is because there is no reference tape count position for recording and playback, and the control described above In this embodiment, the tape count value at the beginning of the tape is set to "0", and after rewinding to the beginning of the tape, the next operation of the operation knob 9 is always possible from the tape count value ゜゜0゛. . That is, when the operation knob 9 is set to the stop side, the flow 132,1
34,189,190,191,192,193,19
Processing is performed in the order of 4, 195, and 196, and the process advances to flow 197.

In flow 197, [[FO')Set] is checked, and the flag [FO] is set (flow 308).
If so, proceed to flow 310. In flow 310, [[F
O] [WON] Reset] processing and flag [FO
] and flag [WON] and flow 311
Proceed to. In flow 311, [0-DFSPREO] processing is performed, and as a result, DISPRO. The contents of are cleared. Note that even if you play to the end of the tape or rewind to the beginning of the tape, ゜゜P.゛Not displayed.
In this case (before the content of PCOUN reaches ``200''), the flag [FO] is not set, so the tape count value will not become ``0'' even if the operation knob 9 is set to the stop side.Next, Mode switching by the changeover switch 3 will be explained.

That is, when the selector switch 3 is set to the computer mode side (switch 3a on, switch 3b off), the input at the input terminal K8 becomes "゜0゛" when the designated digit is 9 digits, and flow 13
2,134,189,190,191,192,193
, 194, and then proceeds to flow 312. Flow 312 performs [Ereset] processing, and flow 31
Proceed to step 3. In flow 313, a [[N')Set] check is performed, and if the flag [N] is not set, the flow advances to flow 314. In flow 314, [[SET]
If the flag [SET] is not set, the flow advances to flow 315. flow 315
Now check [[ST]Set] and set the flag [ST
] is not set, the process advances to flow 316.
In the flow 316, [DISPRIEIO→T8. . ] processing, and as a result, the tape count value (DISPRE
The contents of O) are transferred to TROO, and the process proceeds from flow 317 to flow 101, which will be described later, to enter computer mode.
Then, set the changeover switch 3 to the tape count mode side again (switch 3a off, switch 3b on),
Digit signal D9 is output to input terminal K8, and flow 11
Processing is performed in the order of 2, 120, 121, and the flag [TAP
E] and proceed to flow 122. In flow 122, [TROO-+DISPR[EIO] processing is performed, thereby changing the tape count value (contents of TROO) to DIS
The data is transferred to PRllElO, and tape counting operations can be continued. The mode switching described above will be explained in more detail.

That is, in this embodiment, for example, recorded content to be calculated is played during playback, and the selector switch 3 is set to the computer mode side (switch 3a on, switch 3
By setting the magnetic recording/reproducing device to computer mode (b off), the magnetic recording/reproducing device remains locked while calculation processing is being performed, no matter what knob operation is performed. First, press the pause key 4q during playback to pause the playback, then set the changeover switch 3 to the computer mode side, and as described above, flows 132, 134, 1
89, 190, 191, 192, 193, 194, 31
2,313,314,315,316,317,101
Process in this order.

As a result, the computer mode is entered and MS-0N (flow 304) continues. At this time, even if the operation knob 9 is operated, the switch 3b is off, so the key signal is not sent from the key input section 39 to the input terminal K8. No output. Therefore, the arithmetic control section 36 does not recognize the above-mentioned operation details, and on the other hand, the MS-ON continues and the motor 19 does not rotate, so that the magnetic recording/reproducing device is in a locked state. Next, when the changeover switch 3 is returned to the tape count mode side while the operation knob 9 is set to the playback side, flows 112, 120, 121
, 122, and 123 are performed in the order of tape count mode, and the tape count value (TRO.

content) is transferred to DISPRE6 (Flow 122)
, is displayed in the input check routine of input terminal K8.
Further, the locked state continues until the operation knob 9 is turned to the stop side. This corresponds to [TREc. ．． PRE (DIGIT), clear all except MS] flag [PLAY] is not cleared,
Therefore, not only is the process repeated in the input check routine of the input terminal K8 when the designated digit is other than 7 digits, but also flows 132, 134, and 13 are repeated when the designated digit is 7 digits.
This is because the processing is performed in the order of 5, and as a result, the processing is repeated in the input check routine of the input terminal K8. In addition, if the changeover switch 3 is set to the computer mode side during settings using keys (numeric keys, "S" key 4b1, "ST" key 4c, "STOP32 key 4d)", flow 313
~ 315 respectively, check [[N]Set], [[SET'1set] and [[ST]
Set] check is performed, and flow 316 is skipped to proceed to flow 317. Therefore [DIS PREC→T
REC] processing is not performed, the contents of TREO, that is, the tape count value, are protected. In the above embodiment, from the time when the playback start position or stop position is set until the tape count 7 value matches this set value,
Although the display means for displaying the setting state of whether the set value is the playback start position or the playback stop position has been described, according to the gist of the present invention, when the tape count value matches the set value, the above setting state does not necessarily apply. It is not necessary to stop displaying the warning, and the display means may display that the setting state is reached at least when the setting value is set.

In addition, the display unit 5 displays "" and "D" to indicate the settings of the playback start position and stop position, respectively, but the display is not limited to this. Any display content that can be used to distinguish whether or not the item is present is sufficient. In addition, although we have explained the case where it is applied to a magnetic recording and reproducing device with a computer, an electronic computer is not necessarily required, and the same applies to a magnetic recording and reproducing device called a simple micro cassette tape recorder or a normal power cent tape recorder. It can be implemented in In addition, it goes without saying that the present invention is not limited to the embodiments described above, and that various modifications can be made without departing from the gist of the present invention. As described in detail above, according to the present invention, there is provided a counting means for counting the amount of tape travel, a numeric key for numerically inputting the desired playback start position, stop position, etc. of the tape; At least one setting key for setting a numerical value, and when the set value (desired position) by these numerical keys and setting keys matches the counted value by the counting means, that is, the tape count value, the tape is controlled to run or stop, etc. and a display means for displaying whether the set value is a playback start position or a stop position when a setting is made using the setting key at least 5. Therefore, you can at least confirm that the setting value was memorized at the time of key operation and whether it is the playback start position setting or the stop position setting, and this allows you to check whether there is a mistake in the operation of the setting key. Therefore, it is possible to prevent unnecessary operations and provide a magnetic recording/reproducing device with significantly improved operability.

[Brief explanation of the drawing]

Figures 1 to 14 show an embodiment of this invention.
Fig. 1 is a perspective view showing the overall appearance, Fig. 2 is a detailed view of the internal mechanism, Figs. 3A and b are detailed views of the pulse generating means, and Fig. 4 is a detailed view of the internal mechanism.
5 is a circuit diagram of the key input section, FIG. 6 is a diagram showing the contents of the display register in tape count mode, and FIG. 7 is a schematic diagram of the display conversion section. FIG. 8 is a diagram showing the input/output contents of the display converter, FIG. 9 is a diagram showing an example of the zero suppression display state in tape count mode, and FIGS. 10 and 11 are zero suppression flowcharts in tape count mode. ,
12a-j are flowcharts for explaining the control operation, FIG. 13 is a timing chart for explaining the counting process, and FIG. 14 is a timing chart for explaining the counting process in detail. 1...Housing, 4...Keyboard, 4c...
66ST99 key, 4d. ．． ．． 64ST0P99 key,
5. ．． ．． ．． ．． ．． Display section, 9... Operation knob, 10
...Recording button, 18...Switch mechanism, 1
8a...Power switch, 18b...Fast forward switch, 18c...Rewind switch, 19
...Motor, 24...Take-up reel stand,
25... Rewind reel stand, 26... Magnetic head, 33... Magnet, 34...
・Reed switch, 36... Arithmetic control section, 37
... Drive control section, 39 ... Key input section, 6
6... Display register, 123 to 141, 143
, 145-162...Display flow, 256...
..."゜j゛Set flow, 268...゜4"゛2 Zent flow, 290..."D2 reset flow, 296..."゜Ding゛Resent flow.

Claims (1)

[Scope of Claims] 1. A magnetic recording and reproducing device that records or reproduces information on a running magnetic tape, comprising a counting means for counting the running distance of the tape, and a numerical value indicating the playback start position and stop position of the tape. When the number key entered by the numeric key and at least one setting key for setting the numeric value entered with this numeric key match, the values set by these numeric keys and setting keys match the counted value by the counting means, and the tape is recorded. It is equipped with a control means for controlling running or stopping, and at least a display means for displaying whether the set value is a playback start position or a stop position when a setting is made using the setting key. A magnetic recording/reproducing device characterized by: 2. A patent characterized in that the display means displays the setting state after the settings are made using the setting keys until at least the values set using the numeric keys and the setting keys match the values counted by the counting means. A magnetic recording/reproducing device according to claim 1. 3. The display means is characterized in that when a setting is made using the setting keys, it indicates that the setting is in progress, and when the set value using the numeric keys and setting keys matches the value counted by the counting means, the display turns off. A magnetic recording and reproducing device according to claim 1.