JPS6048827B2 - 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 are housed in the same housing, and by making clever use of the functions of the above-mentioned calculator, the display section of the ultra-small magnetic 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 tape count value match. When a match occurs, the tape is fast-forwarded, and when a match occurs, the tape is run at a constant speed for playback, and then when the stop position and tape count value match, the tape is stopped.

However, in the case of rewinding, fast forwarding, and recording operations, only the stop position can be set. Here, the above settings are
This is done using the numerical keys...~■ and the setting key corresponding to the purpose of setting. In other words, when a desired content is to be played back from a tape on which several contents have been recorded, for example, the tape position corresponding to the desired content is set by key operation according to the recorded memo, and then the playback operation is performed. ing. However, if you misread the above recording memo and set the tape position corresponding to other content, or if you set the wrong tape position due to a key operation error and realize that you have made a mistake, the following problems may occur. There is. In other words, in order to correct the tape position to the desired correct position, all that is required is to perform the correct key operation again, but the incorrect tape position is displayed on the display. Therefore, if you forget the tape count value at the time of setting, even if you reset the tape to the correct tape position, you will not be able to judge whether to rewind or fast forward to that tape position. , extremely inconvenient. The present invention has been made in view of the above circumstances, and its purpose is to provide a counting means for counting the amount of tape travel by counting the pulses generated as the tape travels, and a counting means for counting the amount of tape travel by counting the pulses generated as the tape travels, and a at least one setting means for setting the position; a canceling means for canceling the value set by the setting means as necessary; and a display section for selectively displaying the counted value by the counting means and the value set by the setting means. and means for displaying the counted value of the counting means, that is, the tape count value at the time of setting by the setting means, on the display section when the setting value by the setting means is canceled by the canceling means. , a magnetic recording system that allows you to easily determine whether to rewind or fast forward to a desired position, and after correcting the settings, you can quickly search for the desired position by performing an operation based on this judgment, significantly improving operational efficiency. The purpose is to provide a playback device.

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

FIG. 1 shows a magnetic recording and reproducing device according to the present invention, for example, a small electronic computer for office use (so-called electronic desk calculator) and a small magnetic recording and 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 computer housed in a computer. At the lower front of the housing 1, there are a calculation power switch 2, a switch 3 for selecting computer mode (CAL) or tape count mode (TAPE), a keyboard 4, and a display section that digitally displays calculation results, tape count values, etc. 5 etc. are provided. Further, the upper front portion of the housing 1 is a bar 6 which can be opened and closed, and by opening and closing this cover 6, a micro cassette magnetic tape can be loaded and unloaded. The cover 6 is provided with 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. On the other hand, on the right side of the housing 1, which corresponds to the cover 6, there are operation knobs 9 and Recording button (REC.)
10 are 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 playback, by sliding the operation knob 9 to the illustrated position A (stop) and the illustrated B position (playback), the operation knob lever 11 integrated with the operation knob 9 is moved to the left end and approximately the center of the operation knob 9. It slides along guide shafts 13a, 13b inserted into long holes 12a, 12b provided. Due to this sliding, the pin 15 fixed to the tip of the support plate 14, which swings about the guide shaft 13a as a fulcrum, 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 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.

With this turning on, the motor 19 starts rotating at a constant speed, and this time "
The rotation is transmitted to the flywheel 21 via the endless belt 20. On the other hand, the support plate 22 integrally formed with the flywheel 21 is released from the locked state by the protrusion 11b of the operation knob lever 11, and the spring 2
It rotates around the shaft 22a by the tensile force of 3. As a result, the flywheel shaft 21a of the flywheel 21 comes into pressure contact with the outer peripheral surface of the take-up reel stand 24, and the take-up reel shaft 24a of the take-up reel stand 24 starts rotating and is set on the unwinding reel shaft 25a. The magnetic tape hooked to the take-up reel shaft 24a via the magnetic head 26 is fed forward, and the magnetic tape is converted into an electric signal by the magnetic head 26 and reproduction begins. Note that the operation knob 9 is indicated by the arrow C in the diagram.
By further sliding in the direction, the fast forward switch 18b of the switch mechanism 18 is turned on again by the switch shaft 17, and as will be described later, the motor 19 changes from constant speed rotation to high speed rotation, resulting in a reproduction fast forward so-called CUE 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. It engages with the protrusion 28a and enters a locked state.

Furthermore, by sliding the recording lever 27, the erasing head 29 is rotated about a shaft 29a.
As a result, 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 figure, and the amplifier circuit (not shown) and the magnetic head 26 are switched to the recording state. In this state, recording is started by locking the operation knob 9 to the B position shown in the figure, as described above. Next, when rewinding the magnetic tape, by sliding the operating knob 9 in the direction of the arrow D in the figure, the operating knob lever 11 also slides, and the protrusion 11b of the operating knob lever 11 causes the support plate 22 to pivot. It rotates about 22a in the opposite direction to that during playback. Due to this rotation, the support plate 2
Gear 2 of flywheel 21 configured integrally with 2
1b engages with the rewind idler 31. This rewind idler 31 is engaged with the rewind reel stand 25. On the other hand, while sliding the operation knob 9, the switch shaft 1
7 also slides, 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 flywheel 21 via the endless belt 20 as described above. The rewind reel stand 25, ie, the rewind reel shaft 25a, rotates, thereby causing the magnetic tape to be fed in reverse and rewinding. Further, due to the sliding of the switch shaft 17, the rewind switch 18c of the switch mechanism 18 is newly turned on, and this rewind switch 1
Based on the on/off status of 8c, it is determined and controlled whether tape counting is performed by addition or subtraction processing, as will be described later. Furthermore, when rewinding is performed by sliding the operation knob 9 in the direction of arrow D in the figure as described above when the recording button 10 is locked, the action of the protrusion 111c of the operation knob lever 11 due to this sliding causes Accordingly, the lock plate 28 rotates about the shaft 28b. As a result, the projections 27a and 28a are disengaged, and the recording button 10 is released from the locked state due to the tensile force of the spring 32. At the same time, the amplifier circuit (not shown) and the magnetic head 26 are switched to the reproduction state. As shown in FIGS. 3A and 3B, for example, the take-up reel shaft 24a has a magnet (
A permanent magnet) 33 is fixed, and this magnet 33
rotates integrally with a disc-shaped take-up reel shaft 24a.

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, the on-off cycle 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 travel, and this pulse is counted as described later to process the tape count (tape travel count). 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 controls 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).
-V,. There is also one that boosts the voltage to +VF and outputs it.
The boosted voltages +VD and -VK are supplied to the arithmetic and control section 36, and the voltage +VF is supplied to the display section 5. Here, voltage +VD) -VK and +VF are the operating voltage of the calculation control section 36, the lighting voltage of the display section 5, and the display section 5, respectively.
is the filament voltage. Therefore, when the voltages +VD and -VK7 are supplied to the arithmetic control section 36, ''
Digit signals D, -D9 whose 0'' level is -VK and the ``1'' level is +VD are output to the display section 5 and the key input section 39. This key input section 39
are the above-mentioned digit signals D, -D. A key signal is inputted to the arithmetic control section 3F6 as a key signal, which will be described later. ,K
,, is output to K8. Based on the key signal, the arithmetic control section 36 performs various arithmetic processing (at least four arithmetic operations and other necessary arithmetic operations) or counting processing according to the operating state according to a sequence program stored in advance. At the same time, the results or necessary information are stored, and segment signals Sa to Sg, Sdp, which will be described later, synchronized with the digit signals D to D9 are outputted to the display section 5 to display predetermined characters, symbols, etc. It displays dynamically and further outputs control signals MS and MF to the drive control section 37 to control the rotation of the motor 19, 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, and 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. Further, 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, and thereby Fast forward switch 18b and control signal Υ
The motor 19 is stopped regardless of the state of the stick. In this state, the control signal MS is at the ``0'' level (hereinafter simply referred to as M
S-0FF), if the fast-forward switch 18b is off and MS-0FF, the transistors 40,4
3 is turned off and 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 18b is turned on. Or if MF-0N (transistor 43 is on at this time), transistor 40,
44 is turned off, transistors 41 and 42 are turned on,
The motor 19 is designed to rotate at high speed. FIG. 5 shows in detail the circuit configuration of the key input section 39, which is configured as follows, for example.

That is, this key input section 39 is the keyboard. 4
The keyboard 4 has eight row lines (hereinafter simply referred to as D, to D. row lines) into which the digit signals D, to D, are input. j, and input terminals K, , K of the arithmetic control section 36. , K. (hereinafter simply referred to as K., K., K. column lines)
At each intersection of the matrix consisting of
Numeric keys such as 9]: [÷, ×, -, +, =, %,
Command keys such as [V-], [CM, . RMNM-, M. ，
Calculation keys are provided, each consisting of memory keys 4a to 4d such as ] and clear keys 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, row line, and the other end of this switch 45 is connected to the K4, K8 column through two backflow prevention diodes 46, 47, respectively. switches 3a and 3b constituting the changeover switch 3.
The switch 3a is connected to one end of the switch 3a.
, 3b are connected to input terminals K, , K8 of the calculation control section 36, respectively. In addition, the input terminals K, , K of the arithmetic control section 36. , K. , K8 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 and supplied with voltage -VK. On the other hand, the D5 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.

Further, the emitter of a PNP transistor 54 is connected to the D6 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 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. Further, the emitter of a PNP transistor 57 is connected to the D7 row line via a backflow prevention diode 56, and the collector of this transistor 57 is connected to the K8 column line. Then, the transistor 57
The base of is connected to one end of the power switch 18a via an NPN transistor 58. Also, D.
One end of the recording/playback changeover switch 30 is connected to the row line via a backflow prevention diode 59, and the other end of this switch 30 is connected to the K8 column line. Further, a backflow prevention diode 60 is connected between the D9 row line and the K8 column line. In addition, illustration 61~
64 is a backflow prevention diode. Next, the key input section 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, , K of the arithmetic control unit 36 are used as key signals synchronized with D9. , K. ,K. A time-sharing method is used to output to one of the following. ing. 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. The output will now be output to one of the following, and this will switch to computer mode. becomes. For example, when the number key ■ is pressed now, the switch 65 is turned on, and when the digit signal D6 is on (+VD), the voltage +VD is input to the input terminal K of the arithmetic control section 36, and as a result, the arithmetic control section 36 The input signal (key signal) of this input terminal K, and the digit signal D mentioned above. 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 (TA
PE), the switch 3b is turned on, and the key signal from the key input section 39 is input to the input terminals K, , K of the arithmetic control section 36. ,K. This causes the tape count mode to be set. In this tape count mode, the following signals are input to the input terminal K8 of the arithmetic control section 36. That is, 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. Whether the mode is a computer mode or a tape count mode is now determined based on whether or not 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, the operation knob 9 is moved to the A position shown in the figure (when not stopped,
The power switch 18a is turned on, which turns on the transistor 58, and the digit signal D becomes ``1''.
When the voltage is +VD, the transistor 57 is turned on and the D signal is input. Also, the operation knob 9 is rotated in the direction D (when rewinding).
At this time, the rewind switch 18c is turned on, which turns on the transistor ι55 and outputs 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. Also, when digit signal D, is input and digit signal D6 is not input (operation knob 9
is at position B or direction C in the figure), the arithmetic control section 36 recognizes that the tape counting process is an addition counting process. Note that the digit signal D. is 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 input timing of digit signals D6 and D7 by one cycle or more, as will be described later. Therefore, in this embodiment, when the operation 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.
This digit signal D. Based on this, the arithmetic control section 36 performs a process of counting the amount of tape travel. Further, when the decimal point key (pause key) 4q is pressed, the switch 45 is turned on, so that the digit signal D is input to the input terminal K. As a result, the arithmetic control section 36 outputs a control signal MS (MS-0N) to temporarily stop the motor 19. In addition, the above decimal point key (pause key) 4q can be used to set the selector switch 3 to computer mode (
CAL) side, the switch 3a is turned on, so that the digit signal D, is input to the input terminal K, and is processed as a decimal point key in the computer mode.

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 4d5 have different functions depending on the mode, ie, a so-called double function function. That is, when in the computer mode, each has a clear memory function, a recall memory function, a memory minus function, and a memory plus function, and when in the tape count mode, each has a setting cancellation function (R) as described later. , a tape count value setting function (S), a playback position setting function (>), and a stop position setting function (S). Here, press memory keys 4a to 4d in the tape count mode to ``R'' respectively.
'Key 4a, 'S' key 46, 'ST' key 4
c and a 'STOP' key 4d. Therefore, the various signals described above are input to the input terminals K, , K of the arithmetic control section 36.
. , K. . That is, FIG. 6 shows the storage contents of each digit of the display register 66 consisting of 4 bits and 9 digits and the arithmetic control unit 3 corresponding to each digit.
The display register 66 and the flag are provided in the arithmetic 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 of display register 66 (R8
,R,,R. , R, is decoded by the Nyaku matrix 67, and this decoded content is stored in the 0R matrix 68.
7 segment signals Sa, Sb, Sc, Sd, S
It is designed to be encoded into e, Sf, and Sg. FIG. 8 shows the correspondence between the storage contents of the display register 66 (4-bit input contents of the AND matrix 67) and segment signals.
11'', the segment signals Sa and Sf become .
This means that it will be output and 'OK' will be displayed.

Also, when the flag [S] is set, when input to the AND matrix 67, the segment signal Sdp is output, and the decimal point ''. '' is now displayed. Next, a magnetic recording and reproducing apparatus with an electronic computer, which is an embodiment of the present invention, having the above-described configuration will be described in more detail.
First, in tape count mode, for example, display register 6
If the memory contents of 6 are 1 unhi, the arithmetic control unit 36
However, if the contents stored in the table 3 display register 66 are synchronized with the digit signal and input as is into the AND matrix 67, unnecessary ``0'' will also be displayed as is on the display section 5.

Therefore, in this embodiment, the contents of the display register 66 are changed so that unnecessary ``O'' are blanked before entering the display cycle. That is, for example, converting 4 binary bits ``0000'' (O) to ``1111''
''(15), the unnecessary ``0'' is blanked out as shown in FIG. 8, resulting in display contents as shown in FIG. 9 during the display cycle. (Hereinafter, the above-described processing content will be referred to as zero suppression.) FIG.
Zero suppression is performed sequentially from the 9th digit), and the numerical value [1 to 9]
When detected, zero suppression processing is terminated.

That is, the arithmetic control unit 36 first specifies the ninth digit [9→DIGIT] in flow 7 f0, and in flow 71 specifies the stored content of the designated digit in the display register 66 ''R8R. R2Rl''
Check whether is '0000゛' [R=0
〕do. Here, R=8R8+4R. +2R2+R. If “0000”, proceed to flow 72,
The memory contents of the specified digit of the display register 66 are set to '11]1'.
' [15→R] and proceed to flow 73. On the other hand, ``0''
If it is not 000'', proceed to flow 74, check whether the stored content of the designated digit of the display register 66 is a numerical value [R≧10], and if it is a numerical value (R<10), zero suppression processing is completed and the code is If (R≧10), the process proceeds to flow 73 described above. In this flow 73, the specified digit is ``-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 example described above, if the storage contents of the display register 66 are limited to 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000. Then, the processing in the order of flows 75, 71, 74, and 73 is repeated four times, and then the processing in the order of flows 70, 71, 72, and 73 is repeated four times, and the gripping surface Mushin... Become.

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. In addition, in this embodiment, the input terminals, , K of the arithmetic control unit 36 during the display cycle.

, K. , K8, when a key signal is output from the key input section 39, the arithmetic control section 36 stops outputting the digit signal, turns off the display, and performs processing corresponding to the key signal, so that the next zero suppression is performed. It is now possible to perform cancellation processing. That is, FIG. 11 shows a flowchart of the zero suppression cancellation process in the arithmetic control section 36.
First, in flow 76, specify the 9th digit Z [9→DIGIT], and in flow 77, the memory contents of the specified digit in the display register 66'
'R. R. R. Check whether R,'' is "1111" [R = 15]. ""1111''
In this case, the process proceeds to flow 78, where the stored content of the display register 66 is converted to ``0000'' [O→R, lJ, and the process proceeds to flow 79. On the other hand, if it is not ``1111'', the process directly proceeds to flow 79. In this flow 79, the specified digit is
1'', the next digit to be checked is newly specified [DIGIT-1-DIGIT], and the process proceeds to flow 80. In this flow 80, it is checked whether the digit newly specified in the above flow 79 is "'0" [DI
GIT=0], and if it is ``0'', the zero suppression canceling process is completed, and if it is not ``o'', the process returns to flow 77 and the above-described zero suppression process is repeatedly executed. Next, regarding the contents of various calculations, counts, and control processes in the tape count mode described above by the calculation control section 36,
This will be explained in detail with reference to the flowcharts shown in FIGS. 12a-j.

That is, when the calculation power switch 2 is turned on, the voltage +
VD is supplied to the arithmetic control section 36, and the arithmetic control section 36 thereby 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
Proceed to 02. In this flow 102, specify the 9th digit [9
→DIGIT] and proceed to flow 103. flow 103
Now, by adding '+1' to the specified digit, specify the previous digit [DIGIT+1→DIGIT] and proceed to flow 104. ιIn flow 104, turn off the digit signal corresponding to the newly specified digit. and are concerned about power consumption. Next, proceed to flow 105 and change the specified digit to ``'-1''
Specify a new digit by doing [DIGT-1→DIG
] and proceeds to flow 106. Flow 106 (in the flow 106, the storage contents of the designated digit of the display register 66 ``'R, R, R.R
,'' and the contents of the flag [S] are converted into a segment signal Sa- by the AND matrix 67 and the 0R matrix 68.
Convert to Sg, Sdp and output to display unit 5 [SEGME
NT(DIGIT)0N) SEGMENT(DIGIT
+1)0FF] and proceeds to flow 107. flow 107
Then, the digit signal corresponding to the specified digit (in this case, D9
) is output to the display section 5 [DIGIT-0N], and the display section 5
The above memory contents are displayed in the designated digit. Next flow 108
Go to and check whether the specified digit is '゛o'' [D
IGIT=o], and if it is not ``0'', flow 109
Proceed to. In flow 109, the storage contents of the display register 66 ``R8R. Check whether R2R,'' is ``1111'', that is, R=15 [R=15],
If R=15, proceed to flow 110. In flow 110, the key signal from the key input section 39 is stored in the calculation control section 36 [K. ,K. ,K. , K, →K] and proceeds to flow 111. In flow 111, the digit signal (D9 in this case) corresponding to the designated digit is turned off [DIGITOFF], and the process 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, in the case of R half 15, flow 11
3, the same process as in flow 110 is performed, and the flow advances to flow 112 described above. In this flow 112, the key signal input terminal K stored in flow 110 or flow 113 is used. ,K,,
K. , K, is checked to see if the input contents are K half O [K:0]. Here K=8K8+4K,+2K2
+K1, and when the key signal is on, K is half 0. When it is off, K
=O. 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. However, K=0 (
computer mode), proceed to flow 114 and specify a new digit by subtracting ``-1'' from the specified digit
GIT-1→DIGIT] and proceeds to flow 115. In flow 115, check 5 [DIGIT=PCY] to see if there is a decimal point in the new specified digit, and if there is a decimal point, proceed to flow 116 and set flag [S].
[[S]Set], and if there is no decimal point, flow 117
Go to and reset the flag [S] [[S]Reset]
do. Then, the process returns to the flow 103, and if there is no key signal input from the key input section 39 (K=0), the process starts from the flow 103 described above and repeats the process of returning to the flow 103. As a result of such repetition,
When the specified digit becomes ``0'' in flow 105, flow 1
Reflow 118 by checking 08 [DIDIT=0]
Then, it is checked (COUNT=4) whether the specified digit ``9'' to ``0'' has been repeated four times (hereinafter simply referred to as count ``4''). If the count is ``4'', the process directly returns to flow 102, and if the count is not ``4'', the process proceeds to flow 119, where a new count number is specified by incrementing the count by ``+1'' [COUNT+1 → COUNT] and returns to flow 102. By repeating these steps, the digit signals D, -D are turned on one after another, and segment signals synchronized with these digit signals are output and displayed on the display unit 5. In this case , display register 66 in flow 100
Since the memory contents of [0.
]. Next, when a key operation is performed, the flow 110
Alternatively, in step 113, the key signal from the key input section 39 is stored in the calculation control section 36, and the process proceeds to flow 112.

In flow 112, as described above, it is checked whether the content of the key signal is K half 0 [K:0], and if it is K half 0, the process advances to flow 120. In flow 120, it is checked whether the content of the key signal is K≠8 [K≧8], and if K≧8 is not satisfied, the process proceeds to flow 400. flow 4
00, it is checked 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 advances to flow 402. In flow 402, zero suppression cancellation processing is performed, and in flow 403
Proceed to. 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. In flow 404, calculation processing is executed based on the result of key selection in flow 403, the power count is cleared [0→COUNT], and the process returns to flow 101. The above content will be explained in more detail. For example, number key 0
When you press the switch 65 turns on and now flow 10
5, the designated digits become 6 digits. At this time, processing is performed in the order of flows 106, 107, 108, 109, 110, and 111, and the key signal input terminal K of the arithmetic control section 36 is
, the digit signal D6 is input (K=1). However, the flow 112, 120, 400, 401, 4?2
, 403, 404 in the order of numerical values in computer mode''
5'' processing is performed.

When this process is completed, the process returns to flow 101 and zero suppression process is performed, and while the number key ◯ 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 40 f0 described above [COUNT=4]
Then, if the count is not “4” (the count number is set to “0” in flow 404), the flow is 4 ports 5.
Proceed to. In flow 405, the count number is cleared [0 → C
[0. ] is displayed, the process is repeated in the same display cycle. Next, when you release the number key ■,
0. ] is displayed in the same display cycle, and in the flow 119, the count number becomes J''
It increases by 1''. This indicates that the key has been released, and when the count reaches ``4'' (approximately 207T1, S in this embodiment), the content of the next key operation is 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 unit 39 (input at the input terminal K8) is stored in the arithmetic control unit 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 whether it is O [K:O] and K'=-0
In this case (K=8 in this example when the designated 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 if K≧8, the process advances to flow 121. In this example, since K=8, the process proceeds to flow 121, sets the flag [TAPE], and recognizes that it is the tape count mode. The process then proceeds to flow 122, where the contents of the tape count value storage register (hereinafter simply referred to as TREG) are transferred to the display register 66 (hereinafter simply referred to as DISPREC) [TR
EC-DISPREG], the computer display is switched to the tape count display as described below, and a tape count mode display cycle is entered. Here, the TREa is a 5-digit register (1 digit code, 10 digits, 4 digits set value) in which a tape count value is stored. That is, when the process proceeds from the flow 122 to the flow 123, zero suppression processing is performed, and the process proceeds to the flow 124. In flow 124, the contents of the pause counter (hereinafter simply referred to as PCOUNT), which will be described later, are
Set to o'' [O→PCOUN. ] Then, in the t flow 125, the ninth digit is specified [9→DIGIT] and the process proceeds to the flow 126. In flow 126, the same process as in flow 106 [SEGMENT(DIGIT)0NNSE
GMENT(DIGIT+1)0FF], and then in flow 127, the same process as the first flow 107 is performed [
DIGITON], thereby display register 66
The contents are displayed in the designated digit of the display section 5. Next, proceed to flow 128, [DIGIT=O] is checked, and ''
If it is not 0'', the process advances to flow 129. flow 12
In step 9, [R=15] is checked, and if R=15, the process proceeds to flow 130, flow 131, and then flow 132; if R=15, the process proceeds to flow 133 and then to flow 132. Here, the flow 130 and the flow 133 are [K8, K. ,K2,. K,→K] processing is performed, and in flow 131, [DIGITOFF] processing is performed. In the above flow 132, the designated digit K shown in FIG.

Check if input status flag is set [PRE(DIGIT)SeO. If this status flag is set (in this example, the flag [TAPE] is set when the specified digit is 9 digits as described above), the process advances to flow 134, and the content K of the key signal is checked to see if K≧8. , that is, it is checked whether the input of at least input terminal K is on [K≧8]. In this example, K=8, so proceed to flow 135 and specify the next digit [
DIGIT-1→DIGIT] and proceeds to flow 136. In flow 136, the memory content of DISPREC is ``1''.
010'', that is, check whether R=10 /
Tsuk [R=10] and when R=10, flow 137
Set the flag [S] with [[S')Set], and R=
If it is not 10, the flag [S] is reset [[S] ReseO in flow 138, and the process proceeds to flow 139 together. Specify the previous digit in flow 139 [DIGIT+1 ι
→DIGIT] In flow 140 [DIGI
TOFF] processing and proceeds to flow 141. flow 14
1 specifies the next digit [DIGIT-1→DIGIT] (
In this example, the number is 8 digits) and the process 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 if K<8 as in this example, the flow advances to flow 135, and the same processing is repeated thereafter. In this way, after the above-mentioned process is repeated, the ``0'' digit is specified in flow 141 and the process proceeds to the flow 128, where [DIGIT=0] is checked and the ``0'' digit is specified.
'', the process advances to flow 143. In flow 143, DISPREG contains content indicating stop ``P'' 101
Check if 0'' is set [Pse
t], and if it has been reset, the process advances to flow 144. In flow 144, it is checked whether the flag [PLAY] is set [[PLAY] SeO, and if it is reset, the flow advances to flow 145.

In flow 145, [9→DIG 汀] is processed, and then in flow 146, [SEGMENT (DIGIT) 0N) S
EGMENT (DIGIT+1)0FF] processing, flow 147, perform [DIGITON] processing, and flow 148
Proceed to. In flow 148, [DIGIT=0] is checked, and if it is not "'0", proceed to flow 149 [
R=15] Check. If R=15, flow 1
50, proceed to flow 151 and then proceed to 152, and if R=15 is not established, proceed to flow 153 and then proceed to flow 152 described above. Here, in flows 150 and 153 [K. ,K. ，
K. , K, →K], and in Funoro 151, [D
IGITOFF] processing. However, the above flow 1
52, it is checked whether the content K of the key signal is 1≦K<3, that is, whether only the input end K or K2 is on [1≦K<3], and 1≦K<3. If not, proceed to flow 154. In flow 154, [
DIGIT-1→DIGIT] and proceeds to flow 156. In flow 155, [R=10] is checked, and R=
In the case of 10, the process proceeds to flow 156 to perform the [[S] SeO process, and proceeds to flow 157. If R=10 and the process is not completed, the process proceeds to flow 158 to perform [[S]Reset] processing, and the process proceeds to flow 157 described above. In flow 157, [DIG
IT+1 → DIGIT] Processing and flow 159, 16
Go to 0. In flows 159 and 160, [DIG
ITOFF] processing and [DIGIT-1→DIGIT] processing are performed, and the process returns to the flow 146. In this way, after the above-mentioned process is repeated, in flow 160, “゜0
゛When the digit is specified and the process proceeds to the flow 148, [DIGI
T=0] is checked, and since it is 0, the process proceeds to flow 161. In flow 161, [COUNT=2] is checked, and if the count is 2, the process proceeds to flow 12.
Return to step 5, and if the count is not 6'2'', go to flow 16
After proceeding to step 2 and performing the [COUNT+1→COUNT] process, the process returns to the reflow step 125. However, the flow 13
The input check routine of the input terminal K8 centered on 2, 134, 142 and the input terminal K centered on the flow 152
The input check routines 1 and K2 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, when the calculation power switch 2 is turned on, whether the mode is the computer mode or the tape count mode can be determined by whether or not a decimal point is displayed on the display section 5. Next, operation knob 9
The contents of various calculations, counts, and control processing of the calculation control section 36 when operated will be explained 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 flow 133, and stores the input contents at the input terminal K8, for example, when the input contents are currently specified. If the number of digits is 7, the process proceeds to flow 132 and then to flow 142. In flow 142, [K≧8] is checked, and K
=8, so proceed to flow 163 [DIGIT=5]
Check. Now, in this example, if the specified digit is not 5 digits, proceed to flow 164! [DIGITOFF] processing is performed, and then the process proceeds to flow 165, where [zero suppression release] processing is performed, and the process 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, set the K8 input status flag of the specified digit [PR
E(DIGIT)Set], that is, in this example where the designated digit is 7 digits, the flag [PLAY] is set and the playback state is recognized. Below, flow 168 will be described later.
- 186 and returns to the flow 123. However,
Until the reel rotation pulse is input, the input check routine of the input terminal K8 centered on the above-described flows 132, 134, and 142 will be displayed. Note that the process is repeated in the input check routine of the input terminal K8,
When the specified digit becomes ゜゜0゛, the process proceeds from flow 128 to the aforementioned flow 143 and checks [Pset]. In this example, since ゜P゛ has been reset, the process proceeds to flow 1) 44 and checks [[PLAY]Set]. I do. In this example, in which the flag [PLAY] is set in flow 167, flow 187 and flow 188, which will be described later, are executed.
Proceed to. Then it returns to flow 125 and returns to flow 13.
Input male centered on 2,134,142? 8 will be displayed in the input check routine. Next, when the operation knob 9 is turned to the fast-forward side (direction C in the figure), the fast-forward switch 18b is turned on as described above and the motor 19 rotates at high speed, but there is no effect on the input/output of the arithmetic control section 36. The display continues in the input check routine of the input terminal K8 and waits for the input of the reel rotation pulse.

When the operation 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 stops, and the calculation control unit 36 performs the following processing. That is, when the specified digit is 7 digits, the input at the input terminal K8 is 6"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=O, 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 process proceeds to flow 191. In flow 191, [DIGITOFF] processing is performed, and the flow advances to flow 192. In flow 192, [PRE(DI
GlT) Reset] processing, that is, in this example, the flag [PLAY] is reset and the process 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 the input thickness is entered as described above. The input check routine of 1 and the input check routine of input terminals K1 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 18a is turned on and the motor 19 starts rotating at high speed.

Here, at the timing when the digit signal D7 is output from the arithmetic control section 36, the rewind switch 18c
When the power switch 18a is turned on, the processing is performed in the following order. That is, flows 132, 142
, 163, 164, 165, 166, and 167 in order, and in flow 167 a flag [PLAY] is set. 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, an error “E” is sent to DISPREC.
It is checked whether the content ゛゛110゛ indicating ゛ has been set [[E') Set], and if it has been reset, the flow advances to flow 170. Flow 170 [D
IGIT=7] is checked, and if the specified digit is 7 digits, the process proceeds to flow 171. Flow 171 [6→
DIGIT] processing, and then flow 172, 173
, 174, respectively [DIGITON], [K
8, K4, K2, Kl→K] and [DIGITOFF], and the process proceeds to flow 175. In flow 175, [K≧8] in the specified 6 digits (according to flow 171)
A check is performed, and if K≧8 (K=8 in this example), the process advances to flow 201. Flow 201 is [PRE(DI
GIT) Set] processing, that is, in this example, sets the flag [REV], recognizes that the rewind state is in progress, and proceeds to flow 176. In flow 176, the flag [
SET] is set, that is, whether the setting of the tape counter value is recognized. If it is not recognized (reset), the flow advances to flow 177. flow 17
7, it is checked whether the flag [N] is set, that is, whether the operation of the number key n-(9) on the keyboard 4 is recognized.[[N]
Set], and if it is not recognized (reset), the process advances to flow 178. 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 [[S]Set], and if it is not recognized (reset), Proceed 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, it is checked whether the flag [REV] is set [[REV]Set], and if it is set, the flow 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 not set, the flow advances to flow 203, and if it is set, the flow 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 the process proceeds to flow 205. In flow 205, it is checked [[CuE′)Set] whether the flag [CUE] is set, that is, whether the fast forward state is recognized. If it is not set (reset), the flow is Proceed to 206. In flow 206, check [[ST')Set]! and if it has been reset, proceed to flow 186 [[ST]Res
et] processing and returns to flow 123. Here, the flag [SUB] is provided for the purpose of reliably counting the generated pulses even if the reel continues to rotate due to inertia when the operating knob 9 is returned to the stop side. That is, the flag [SUB] is set when the operation knob 9 is set to the rewind side, and reset when the operation knob 9 is set to the playback side. Depending on the state of this flag [SUB], the arithmetic control unit 3
6 is designed to determine whether the tape running amount 5 counting process is in subtraction mode or 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, at the timing when the digit signal D6 is outputted from the arithmetic control section 36, the rewind switch 18c and the power switch 18a
When the digit signal D7 is turned on, processing from flow 132 to flow 170 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 designated digit is 6 digits, the same procedure as described above from flow 201 to flow 123 is performed. 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 [RE■] 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 switch is turned on, the transistors 55 and 58 are turned on at the same time (the rewind switch 18c is configured to turn on earlier than or at the same time as the power switch 18a), but this is due to the timing. This is because if there is a deviation, the arithmetic control section 36 will be unable to correctly determine whether playback or rewinding is being performed, 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 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". , 134 and then sequentially processed to flows 189 to 200.

Here, in flow 194, [DIGIT=9] is checked, and if the specified digit is 9 digits and there is no such digit, the process proceeds to flow 195.

In flow 195, check [DIGIT=8],
If the specified digit is not 8 digits, the process advances to flow 196. Flow 196 flag [PALY] and flag [RE■
] Reset [[PALY,lresetl[RE■]
Reset) is insufficient, and as mentioned above, flow 19, which will be described later.
7 to 200 The program then proceeds to flow 3 and enters a 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 table 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 unit 39 outputs the digit signal D5 (hereinafter simply referred to as a reel rotation pulse) to the input terminal K8. ) is output and counting processing is performed. First, when the specified digit is 5 digits, flow 132
, 142, 163. In flow 163, [DIG
IT=5] is checked, and as a result, the digit signal D
5 is 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.
[WON]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 in flow 212, [PRE(DIGIT
) Set] processing, that is, sets the flag [REEL], recognizes that the reed switch 34 is turned on, and proceeds to flow 213. In flow 213, [4→DIGIT]
After processing, the flow advances to flow 139, where the input routine for the input terminal K8 is entered again and the display continues. In this way, when the reed switch 34 is turned on for the first time, only the flub [WON] and the flag [REEL] are set, and the display does not change. Next, when the reed switch 34 is turned off, the input at the input terminal K8 becomes "0" when the designated digit is 5 digits, so the flow 132
, 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 (DIGIT) Reset] process, that is, reset the flag [REEL] and set 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, which will be described later, is set to ゜“0” (A)→P. . UNT] and flow 21
Proceed to step 7. In flow 217, a [[S') Reset] process is performed, and the flow advances to flow 213, which then advances to an input check routine for input terminal K8. Next, when the reed switch 34 is turned on again, when the designated digit is 5 digits, the input at the input terminal becomes "゜1", that is, K=8, so the flows 132, 142,
Proceed to 163, 209, 210, 164, 165, 166. In flow 166, [DIGIT=5] is checked, and if the designated digit is 5 digits, the process advances to flow 218. In flow 218, the flag [REEL] is set [[RE
EL')Set] and proceeds to flow 219. flow 21
At 9, reset the flag [WON] [[WON]Re
set] and proceeds to flow 220. In flow 220, it is checked whether the flag [SUB] is set ([SUB'3Set]), and if it is set, the flow advances to flow 221, and if it is reset, the flow advances to flow 222. In the above flow 221, DISPREO
By subtracting the contents of ゜-1゛, the tape running amount is subtracted and counted [DISPREC-1 → DISPREC
] and proceeds to flow 223. On the other hand, in flow 222, D
By adding “゜+1” to the contents of ISPREC, the tape running amount is added and counted [DISPREC+1→
DISPREC] and proceeds to the flow 223 described above. Flow 223 will be described later. It is checked whether the flag [STOP] is set so that the flag [STOP] is set, and if it is reset, the flow advances to flow 224. In flow 224, [[CUE]Set] is checked,
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 last 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) changes to +/- due to the state of the flag [SUB].
It will be counted by 1 or "-1".

FIG. 13 is a timing chart showing the counting process described above. That is, FIG. 13a shows the rotation 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 a digit signal D5 outputted from the key input section 39 as the reed switch 34 is turned on and off.
The input signal at input terminal K8 is shown synchronized with . 13th
Figures D and e show the flag [WON] state corresponding to the input signal of the input terminal K8 and the tape count value corresponding to this flag [WON] during playback (when the operation knob 9 is in the B position or in the C direction). ing. In addition, FIGS. 13F and 13g show flags at the time of rewinding (operation knob 9 is in direction D in the figure).
WON] status and tape count value. By the way, in this embodiment, as shown in FIG. 13, when the rotational speed of the take-up reel stand 24 is ゜゜N゛, the tape count value is corrected to become ゜゜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,
Figure c shows the flag [SUB] and the flag [SUB] in the playback state.
WON], 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 be pushed all the way to the rewind side. For example, a case where the above operation is performed at position 1 shown in FIG. 14c during reproduction will be described. That is, the flag [S
UB) and flag [NOC] are reset, flag [W
ON] is set, the tape count value is “
When rewinding from playback at N' (position 1 in the figure), if the designated digit is 6 digits, the flow advances to flows 132, 142, then flows 164 to 170, and then flows 207, 208,
Processing is performed in the order of 201, 176 to 180, and 202 to 206.

At this time, the flag [REV] is set in flow 167, and the flow 20
1 flag [PLAY], flow 203 flag [NO
C] and the flag [SUB]- are set in flow 204, respectively. Next, when the reed switch 34 is turned on, when the designated digit is 5 digits, the flow 132, 142, 163,
Processing is performed in the order of 209, 212, and 213. Here, the flag [REEL] is only set in flow 212, and no counting process is performed even though the flag [WON] is set. Therefore, the tape count value remains "N". Next, the reed switch 34
When OFF, flows 132 and 13 when the specified digit is 5 digits.
Processing is performed in the order of 4, 189, and 214. flow 21
In step 4, a [PRE (DIGIT) Reset] process is performed, the flag [REEL] is reset, and the process proceeds to flow 215. In flow 215, [[NOc')Set] is checked, and if the flag [NOC] is set, the flow advances to flow 225. In flow 225, [[WON]
If the flag [WON] is set, the flow advances to flow 226. In flow 226, the flag [WON] is reset.
t] and proceed to flow 216, and the following flows 216 and 21
Processing is performed in the order of 7,213. Flag [SUB], flag [WON], flag [N] in this rewind operation
OC] and tape count status are shown in FIG. 14d.
Now, when the operating knob 9 is set to the stop side at the illustrated position J in FIG. 14d, when the designated digit is 7 digits (or 6 digits), processing is performed in the order of flows 132, 134 and flows 189 to 196.

In flow 196, the flag [PLAY] and the 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 set to the playback side, when the designated digit is 7 digits, flows 132, 142, and flows 163 to 17
Processing is performed in the order of 9. At this time, in flow 167, the flag [PLAY] is set. Above flow 17
In 9, check [[SUB]Set] and set the flag [S
UB] is set, the process advances to flow 227. Check whether the flag [NOC] is set in flow 227. Check [[NOc')Set] if it is set, and if it is set, proceed to flow 227. flow 22
1, reset the flag [NOC] [[NOC]Re
set] and proceeds to flow 180. In flow 180 [
[RE■]Set] Check and flag [RE■]
If 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 specified digit is 5 digits 4, flow 132, 142, 163,
Processing is performed in the order of 209, 210, 211, and 212. At this time, in flow 211, flag [WON], flag 2
The flag [REEL] is set at 12. and,
As mentioned above, when the next reed switch 34 is turned on, the flag [WON] is reset and the tape count value is set to "゜+1".
Do it. Flag [SUB] in the above playback operation,
The 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 flag [RE
, flag 9 [NOC] and flag [SUη] are set.

Then, when the reed switch 34 is turned off, the same process 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 for 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, no flow 132, 134, 189,
214. In flow 214, [PRE(
DIGIT) Reset] process and set the flag [REE
L] and proceeds to flow 215. flow 215
Now check [[NOC]Set] and set the flag [N
OC] is not set, the process advances to flow 225. In flow 225, [[WON')Set] is checked, and if the flag [WON] has been reset, the flow advances to flow 229. In flow 229, the flag [N
OC] is reset [[NOC]Reset], and then processes in flows 216 and 217 are performed in this order. Thereafter, by repeatedly turning on the reed switch 34, the flag [
The setting and resetting of the flag [WON] is repeated, and the flag [WON] is set and reset.
ON] condition (when reset), subtraction counting processing is executed. The flag [SUB], flag [WON], flag [NOC] and lap count states in the above-described rewinding operation are shown in FIG. 14f. Then the first
4. If you stop the rewinding operation and perform the playback operation again at the L position shown in Figure f (the flag [SUB] is set and the flags [REEL], [WON], and [NOC] are reset), the designated digit will be set to 7. When it is a digit, processing is performed in the order of flows 132, 142, and flows 163 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. In flow 228a, set the flag [NOC].
Set] and proceeds to flow 180. In flow 180 [
[REV]Set] check and flag [REV]
If not set, the process advances to flow 181 and the flag [SUB] is reset. Next, when the reed switch 34 is turned on, when the designated digit is 5 digits, the flow 132,
Processing is performed in the order of 142, 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 a subtraction count is an addition count is changed from set to reset or from reset to set (from set to reset or A flag [NOC] is provided, and while this flag [NOC] is set, counting processing is not performed even if the flag [WON] is reset. The discrepancy in tape count values during playback and rewinding is corrected. That is, when the rotational speed of the take-up reel stand 24 is "N", the tape count value is controlled to be "N" during both playback and rewinding.The above flag [NOC] is a flag. [WON] is reset by turning off the reed switch 34 while [WON] is being reset.Next, a method of setting the tape count value etc. by key operation will be explained.

In other words, in tape count mode, number keys 6-
(9) The tape count value, playback start position, stop position, etc. can be set using the "R" key 4aC'S" key 4b1"ST" key 4C1"STOP" key 4d, etc. For example, now the operating knob 9 is on the stop side, and the input ends Kl, K centering on the flow 152
When a key is pressed at the timing of the input check routine No. 2, the input contents of the input terminals K1 and K2 are stored in the arithmetic control unit 36 in flow 150 or flow 153, and the flow advances to flow 152. In flow 152, [1≦K〈
3] Check, and if 1≦K3, proceed to flow 23
Go to 0. In flow 230, it is checked whether the display cycle in the input check routine for input terminals Kl and K2 has been repeated twice from the specified digit ゛゜9゛ to ゜゜0゛.
COUNT=2], and if the count is "2", proceed to flow 231. In flow 231, [DIGITOFF]
Processing is performed, and then, in flow 232, [zero suppression is released] is performed, and the flow proceeds to flow 233. In flow 233, it is checked [AFTset] whether the flag [AFT] is set, that is, whether it is recognized that the operation knob 9 has just been set to the stop side. Flag CA
FT] is not set, the process advances to flow 234. In flow 234, it is checked whether the "゜R" key 4a has been pressed ["゜R" key], and if it has not been pressed, the process advances to flow 235. In flow j-235, it is checked whether an error is displayed [ ESet], and if no error is displayed, proceed to flow 236. In flow 236, it is determined which key was pressed based on the input contents of input terminals Kl and K2 and the contents of the specified digit (digit signal). [Key sorting]. If the count is not "2", proceed to flow 406, clear the count number [0→COUNT], and proceed to flow 154, where the input check routine for input terminals Kl and K2 and input terminal K8 are performed. The input check routine is repeated alternately. and,
When the key is released, 1≦K<3 is no longer satisfied, so flow 152 proceeds to flow 154, and input terminals Kl, K2
input check routine for input end? The input check routine of 8 is repeated alternately. However, the flow 1
At step 62, the count increases by "1", and when the count reaches "2", the contents of the next key operation are accepted.First, the setting of the tape count value will be explained.

For example, let's say that you stop recording once the tape count value is "50" and turn off the calculation power switch 2. In this state, if you want to record again for example as a memo, turn on the calculation power switch 2. By performing the following operation, it is possible to set the tape count value ゜゜50゛ and record.In other words, when the number key (5) is pressed, the [key selection] process is performed in flow 236 as described above. , proceed to flow 237. In flow 237, the flag [
SET] is set, that is, whether it is recognized that the tape count value has been set. If it is not recognized (reset), the process advances to flow 238. flow 2
In step 38, 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→DISP
REC] processing, that is, clearing the contents of DISPREC, and proceeding to flow 240. In flow 240, [N-+D
ISPRcc] processing, that is, the numerical value ゜゜5゛ is DISP
The information is stored in the REC and the process proceeds to flow 24. In flow 241, the flag [N] is set [[N]Set] and the display cycle proceeds, and the number "5" is displayed.Next, press the number key M
When the button is pressed, the above-mentioned flows 236, 237, and 238 are executed in this order. In flow 238, a [[N]Set] check is performed, and since the flag [N] is set at this time, flow 239 is skipped and the process proceeds to flow 240. Next, proceed to flow 241, and the number “50” is DIS
It is stored in PREC, and the numerical value "50" is displayed in the display cycle. Next, when the ゜゜S゛ key 4b is pressed, the process proceeds from the above flow 236 to flow 242. In flow 242,
[N) Reset] processing is performed to reset the flag [N], and the process proceeds to flow 243. In flow 243 - [[C
uE′)Set] is checked, and if the flag [CUE] is not set, the process advances to flow 244. In flow 244, it is checked [[STOP]Set] whether the flag [STOP] is set, that is, whether it is recognized that the stop position has been set, and if it is not recognized (reset), the flow returns to 245
Proceed to. 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, flow 2
At step 37, the [[SET] Set] check is performed, and since the flag [SET] is set, the flow advances to flow 237 Noa. In this flow 237a, the tape count setting value is TR.
It is stored in the EC [DISPREC→TROO]. 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 value by repeating the above-described operation.

In other words, perform the correct number key operation again and press ゜“
All you have to do is press the S key 4b. This is the first flag [N
] is reset (
This is because flow 242) is performed. 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. Furthermore, if the ゜゛S゛ key 4b is pressed 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, press the key 4
By pressing a, the flag [SET] can be reset to protect the tape count value. That is,
In flow 234, a check is made for the "°R" key, and if the "R" key 4a is pressed, the flow advances to flow 246.
[Ereset] processing is performed in flow 246, and flow 2
Proceed to step 47. In flow 247, a [[SET] Set] check is performed, and if the flag [SET] is set, the process advances to flow 248. In flow 248, the flag [
N] and flag [SET] and proceed to flow 12.
Proceed to step 2. However, in flow 122 [TREO→DI
SPREC] By performing the process, ゜゜S゛key 4b
The tape count value at the time you press is displayed. If you realize that you have made a mistake in setting the tape count value after pressing a number key, press the clear key 4e, perform the correct number key operation again, and then press the "S" key 4b to correct the tape count setting value. In other words, when the clear key 4e is pressed, the process proceeds to flow 407, where the [[N] Set] check is performed, and if the flag [N] is set, the process proceeds to flow 408.
Proceed to. In flow 408, [0→DISP] processing is performed to clear the erroneous numerical value. This is because when the correct numeric key operation is performed again, the processing is performed in the order of flows 238 and 240, and the correct numeric value is set.
Next, the setting of the stop position will be explained. That is, setting of the stop position during playback, fast forwarding, and rewinding is performed by pressing the ST0P key 4d. For example, as described above, if you press any numeric key to set the number and then press the "゜ST0P" key 4d, the flow advances from flow 236 to flow 249.
et] is checked, and if the flag [SET] is not set, [[SET]Resetl[WON
') Reset. ．． DISPREc→TREC→TRO
．． ．． ] 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 the flag [ST] [[ST]Se
t] and proceeds to flow 252. In flow 252, check whether 6°ST゛ key 4c is pressed [“゜ST゛key]”
and “If STOP key 4d is pressed, flow 2
Proceed to step 53. In flow 253, [[CuE′)Set]
A check is performed, and if the flag [CUE] is reset, the process advances to flow 254. In flow 254, DI
The value of SPREO and T. . . Comparison of magnitude with the value of [DIS
PREC<TP. EC] is performed, and the value of DISPREC becomes TP. If it is smaller than the value of EG, flow 255
Go to and set the flag [BACK] [[BACK']
Set] and recognizes that this is the setting of a stop position during rewinding, and proceeds to flow 256. On the other hand, if the value of DlSPROc is greater than or equal to the value of TREC, flow 25
Proceed to step 7 and reset the flag [BACK].
K') Reset] and proceeds to flow 258. flow 2
In step 58, CDISPREO=TROC] is checked, and if the value of DISPREC is the same as the value of TREC, the process advances to flow 259. In flow 259, the flag [S
TO] is set [[STO]Set], recognizing that the start position and stop position are equal, and performing the above flow 256.
move on. On the other hand, if the value of DISPREC is not equal to the value of TREC, the process proceeds to flow 260 and the flag [STO]
is reset [[STO]Reset], and it is recognized that the start position and the stop position are different (start position (stop position)), and the process proceeds to the above flow 256. In flow 256, D
ST whose memory contents indicating the stop position of ISPREC will be described later.
Transfer to OPREC [Transfer to DISPREC 0PRE6, DISPRO. "Memorize ゜1110゛〔" in the 7th digit of
Set] and set the flag [STOP].
') Set] to recognize that the stop position has been set. The program then proceeds to flow 123 to enter a tape count mode display cycle, where the set value of the stop position and a symbol indicating the stop position, such as a hook or key, are displayed. Note that STOPREO is a 5-digit (
This is a register with a 1-digit code + 4-digit setting value). Next, setting of the playback start position will be explained.

That is, the start position during playback is set by pressing the "S" key 4c. For example, if you press any number key to set the number as described above and then press the "ST" key 4c, the flow 236, 249, 250, 251
In the flow 251, the flag [ST
] is set and the process advances to flow 252. In flow 252, the [゜゛ST'' key] is checked, and if the ゜゛ST゛ key 4c is pressed, the process advances to flow 261.

In flow 261, [DISPRT:. C<TREC] is checked, and if the value of DISPREla is smaller than the value of TROC, the process proceeds to flow 262 and the DISPREC
Store the program "110r" in the 9th digit of ``Eset'' to indicate an error, and perform ``MSON'' processing so that the motor 19 will not rotate even if the operation knob 9 is operated without noticing the error. In this case, the error is used because it means that when the operation knob 9 is set to the playback side, playback from the start position 5 is impossible, and that rewinding is necessary.On the other hand, The value of DISPlOO is T8
If it is smaller than the value of OO, proceed to flow 263 [D
ISPREC=TRIElC] Check.

DISPR5. The value of is TRO. If the value is equal to O, the process advances to flow 264 and a [[STOP]Set] check is performed. If the flag [STOP] is set, the process proceeds to flow 265, sets the flag [STO], and proceeds to flow 266.

If the flag [STOP] has been reset, the process proceeds to flow 265a, resets the flag [STO], and proceeds to flow 266. In flow 266, the flag [NCUE] is set [[NCUE]Set], and it is recognized that the tape count value stored in TREC is equal to the playback start position during playback, and flow 266 is executed.
Proceed to 67. Also, in the flow 263 above, DISP
If the value of REC is greater than TREG, flow 266
Proceed to step a, reset the flag [NCUE], and proceed to flow 267 described above. In flow 267, [[REC') Se
t] is checked, and if the flag [REC] is not set, the process advances to flow 268. In flow 268, the memory contents indicating the start position of DISPROO are stored in ST.
ARTRI: l: Transfer to C [DISPREO → STAR
REO], store ゜゜101゛ in the 8th digit of DISPREG, and set the flag [CUE].
CUE]Set] and proceeds to flow 269. ST here
, ARTROc is a 5-digit (
This is a register with 1 digit code + 4 digit setting value). flow 26
In step 9, a [[STOP]Set] check is performed, and if the flag [STOP] is reset, flow 1 is executed.
The program proceeds to step 32 and enters a tape count mode display cycle, where the set value of the playback start position and a symbol indicating the start position, such as a key or key, are displayed. Note that if the stop position during playback has already been set,
The flag [STOP] is set (flow 256), so the [[STOP] S in flow 270
et] check result flow 270 is proceeded to.

At Flow 270! [STOPp. cakuSTARTR
If the value of the playback start position is larger than the value of the stop position, the process proceeds to flow 262 and an error [Eset] occurs because playback is impossible.

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 27
In step 1, [STOPREO=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 a flag [STO] is set; if they are not equal, the process advances to flow 273 and the flag [STO] is set. Reset the flag [STO] and proceed to flow 1 in either case.
Proceed to step 23. Further, the order of setting the stop position and the reproduction start position may be set in any order.

That is, if the stop position is set after the playback start position is set, flows 236, 246, 250, 251
, 252, 253, and in flow 253, [[C
uE′)Set] is checked and the flag [C[J
E] is set 70 to 268, flow 74
Proceed to.

In flow 274, [DISPREO
] Check. This is because the fact that the playback start position has been set indicates that the value of DISPROc is greater than or equal to the value of T8EC, so it is sufficient to compare the value of DISPREO and STARTREO. That is, if the value of DISPROO is smaller than the value of START8EO, reproduction is impossible, and the process proceeds to flow 262, where an error [Eset] occurs. On the other hand, the value of DISPRIELC is STARTRE
If the value is greater than or equal to the value of c, the process advances to flow 275 and a [DISPREC=STARTREc] check is performed. If the value of DISPREC and the value of STARTREc are equal, proceed to flow 259 and set the flag [STO]; 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
S.P.R.O. →STOPRIllC], [''Set], and [[STOP]Set] are performed, and the process proceeds to the display cycle. As explained above, in this embodiment, “S
When the T'゛key 4c or the ST0P゛key 4d is pressed, the flag [ST] is set and preparations are made to display the respective keys ゛゛゛,゜OK゛, and then the respective S
It is stored in TARTREC, , STOPREG and displayed in the tape count mode display cycle.

At this time, it goes without saying that a set value indicating the playback start position or stop position is also displayed corresponding to the above display contents. Next, the set values of the playback start position and stop position can be canceled and errors can be canceled by 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 27
In 8, [MFOFFl"Resetl[NCUE][C
UE] [STO] Reset STOR RECOSTAR
TREc] processing and proceeds to flow 279. flow 27
In 9, check [[ST]Set] and set the flag [S
T] is set (flow 251), the process advances to flow 280. Flow 280 [0-+STOPR
ECl”Resetl[BACK]STOP’3res
et] processing and proceeds to flow 281. In flow 281, [[NCUE][CUE][STO,lresetl
“ResetsTOPREO→STARTREc,.M
FOFF] processing and proceeds to flow 2418. flow 2
48, [[N][SET][ST]Reset, . P
reset. ．． MSOFF] processing is performed, and the flow advances to the flow 122 to enter the display cycle. That is, ゜゜R
゛Press key 4a to display the 8th and 7th digits of DISPREC.
"0000" is stored in the digit ("゜"゛゜゜''゛ is reset), STOPRIll:C and STARTRE
The memory contents of c are cleared and the flag [CUE], flag [STOP], flag [BACK], flag [STO]
, the flag [NCUE] and the flag [ST] are reset and the set values are canceled. However, the stored contents of TREC1 are transferred to DISPREC (flow 122), and the tape count value is displayed. Next, in case of an error, press the ゜゜R'' key 4a to return to the flow 251.
[Ereset] processing is performed, ゜゜0000゛ is stored in the 9th digit of DISP8EO, and the error display and set value are canceled. Here, in the case of an error, only the "゜R" key 4a can be accepted for key operation, and the error display will not be erased in the case of other key operations.This can be done by checking the "R" key in flow 234. and ゜“R
If it is not the key, proceed to flow 235 and select [Eset
], and if an error is displayed, the process proceeds to step 123 to continue displaying the error. Next, the operation of the operation 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 232. In flow 282, [(SE
T] [WON] Reset] processing and flag [SE
T] and flag [WON] and proceed to flow 17.
Proceed to step 7. In flow 177, [[N]Set] is checked, and flag [N] is set (flow 24).
1), proceed to flow 283. In flow 283,
Flow [N] is reset [[N]Reset] and the process proceeds to flow 284. In flow 284, [TROO → DIS
PREO] processing, and the tape count value stored in TROC is transferred to DISPREC. When the reel rotation pulse is input, counting processing is executed for the tape count setting value (DISPREc) in the flow 221 or 222 described above. Next, a case in which a playback operation is performed after setting a playback start position will be described in detail.

That is, when a reproduction operation is performed, the processing proceeds in the order of flows 182 and 183. In this flow 183, [[CUE]S
et] is checked, and if the flag [CUE] is set (flow 268), the flow advances to flow 285. In flow 285, a [[NCUE]Set] check is performed, and if the flag [NCUE] is not set, the flow advances to flow 286. In flow 286 [MFON]
The process is performed, the motor 19 is rotated at high speed, and the process proceeds to flow 186. In flow 186, [[ST]Reset] processing is performed to reset the flag [ST]. Then, when the reel rotation pulse is input, 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]
E] is set (flow 268), the process advances to flow 287.

In flow 287) [STARTRO. =DISPRE
C] A check is performed, and as long as the tape count value does not match the set value of the start position, the addition counting process is continued and a new tape count value is displayed. Therefore, the tape count value matches the set value of the playback start position.
Then, the flow advances to flow 288 and a [[CUE] Set] check is performed, and if the flag [CUE] is set (flow 268), the flow advances to flow 289. In flow 289, [[STO)Set] is checked and the flag [ST
If σReset. ．． MFOFFl [CUE] [STO
[Reset] processing is performed, the motor 19 rotates at a constant speed, the start position setting display "Ding" disappears, and the flag [C
UE] and proceeds to flow 291,123. In flow 291, [STOPREG-+STARTRO.
] processing is performed, and the stored contents of STOPROC are changed to ST. A
The data is transferred to RTREc, 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 [NCUE
], when you perform a playback operation, flow 18 first appears.
Processing proceeds in the order of 3,285.

In flow 285, a [[NCUE]Set] check is performed, and if the flag [NCUE] is set, the flow advances to flow 292.

In flow 292, [[CUE][NCUE]Reset
l "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 STOPREC are changed to STA.
RTRE, , , 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.

In flow 262, [MSON. ．． Eset] processing and proceeds to flow 293. Flow 293 Teha [[PLAY
[Set] is checked, and if the flag [PLAY] is set (flow 167), flow 294 is performed.
Proceed to. In flow 294, [MSON. ．． pset] processing and proceeds to flow 295. In flow 295, (a)-STOPREC] processing is performed, and the process proceeds to flow 296!
nothing. In flow 296, [”Resetl[BACK]
STOP]Reset] processing, and the following flow 2 is performed.
Processing is performed in the order of 90, 291, and 123. As a result, the set value is canceled, the motor 19 stops, and the DISPRcc
゜"110F'C'E'゛) in the digit is 3゜" in the 6th digit.
1010゛ (“゜P゛)” is stored and the display cycle begins. However, the character ゜“ indicating an error is displayed in the 9th digit of the display section 5.
E゛ is in the 6th digit, for example, the letter ゜゜P.゛ is displayed.
In this case, the reason why the error message is displayed is to indicate that even if the rewinding operation is continued, it is not possible to reproduce from the start position. In addition, despite the operation of the above-mentioned character "P." display operation knob 9 (in this example, a rewind operation), the motor 1
This is to notify that 9 is stopped. Also, this "゜P." display is set by "P" (R=1
0), the flag [S] is set in flow 137 or flow 156. Note that when the "゜P." display is lit, the error can be canceled by setting the operation knob 9 to the stop side.In other words, when the operation knob 9 is returned to the stop side, the [EresetlPreset ..MSO
FF] processing is performed and C6E'' and ゜"P'' are reset and turned MSOFF. Next, the operation of operating the operation knob 9 after setting the stop position will be described. That is, when the operating knob 9 is moved to perform a playback (recording) operation, a rewind operation, etc., in the flow 284, [TREC → DISPRE
C] Perform processing. Then, the tape count value (TRE.
,・is transferred to DISPREO, and flow 1
At step 85, the stored contents of STOPREC are transferred to START. →STARTREc], 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. Flow 223 is [[S
TOP] Set] check and flag [STOP]
is set (flow 256), flow 2
Proceed to 87. In flow 287, [STARTREc=D
ISPREO] and check the value of STARTRE6, that is, the stop position setting value (according to flow 291) and the DI
If the value of SPREC, that is, the tape count value matches, the process advances to flow 288. Flow 288 [[CUE]
If the flag [CUE] is not set, the process advances to flow 297. In flow 297, a [[ST'1reset] process is performed, and thereafter, the processes in flows 294, 295, 296, 290, 291, and 123 are performed in this order.

This causes the motor 19 to stop and the ゜゜P.゛ will be displayed, the set value will be canceled, and the ゜゜ding゛ display will disappear. Furthermore, when the operating knob 9 is operated when the set value of the stop position is equal to the tape count value (the flag [STO] is set), the [[STO] Set] check is first performed in the flow 184 or flow 184a, and the flag [STO] is checked. STO
] is set, the process advances to flow 298.

In flow 298, [[ST')Reset] processing is performed, and the following flows 294, 295, 296, 290, 2
Processing is performed in the order of 91 and 123. This causes the motor 19
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 [ClJE]
When the rewind operation is performed on the set), the process proceeds to the flow 205, and the following flows 262, 293, 294, 295, 29
Processing is performed in the order of 6, 290, 291, and 123. As a result, "E" and "P." are displayed in the 9th and 6th digits of the display section 5, respectively, and the motor 19 remains stopped. If a playback operation is performed when the tape count value is smaller than the tape count value, the process proceeds to flow 182, where a [[BACKset] check is performed, and the flag [BACK] is set (flow 25).
5) Proceed to flow 262 for Yang Kai. Below flow 293,
Processing is performed in the order of 294, 295, 296, 290, 291, and 123, 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 process advances to flow 262. Below flow 293, 294, 29
5, 296, 290, 291, 123 are processed in the order of "゜E゛" and "P.゛ is displayed and motor ] 9 remains stopped. Next, a case will be described in which the operating knob 9 is operated without noticing an error during setting by key operation.

First, in flow 19, [Eset] is checked,
In the case of an error, the process advances to flow 299. Flow 299 [TRcO-+DISPO. ] Processing is performed, and the following flows 294, 295, 296, 290, 291, 1
Processing is performed in the order of 23. As a result, the tape count value is transferred to DISPR[ElC, the motor 19 remains stopped, and "゛E" and "゜P." are displayed.

Then, when the operation knob 9 is returned to the stop side, the flow 198
゜“E゛゜”P゛ is reset and becomes MS OFF. In this embodiment, when ゜“P.゛” is displayed, the error is canceled by turning the operation knob 9 to the stop side.
An error when "゜P." is not displayed is detected by pressing the "R" key 4a as described above. 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 return to the playback start position without canceling the stop position setting. It is now possible to release the SunawajiR
``When the key 4a is pressed, [Ere
set] processing and proceeds to flow 247. flow 24
In 7, check [[SET] Set] and set the flag [
SET] is not set, the process advances to flow 277. Flow 277 checks [[CUE]Set] and the flag [CUE] is set (Flow 2
68) If so, proceed to flow 278. In flow 278, [MFOFFl[Resetl[NCUE][CUE]
[STO] Reset. ．． sTOPREC→START
ROc] processing and proceeds to flow 279. flow 27
In 9, check [[ST]Set] and set the flag [S
T] has been reset (flow 186), the process advances to flow 248. In flow 248, [[N][SET
] [ST] ResetlPreset. ．． MSOFF]
After processing, the process proceeds to flow 122. This allows the STO
The stored contents of P8OO are transferred to STARTR5c, and the set value of the playback start position is canceled, but the set value of the stop position is STARTRO.

stored and protected. Further, the "゜"゛ display will disappear. When the operation knob 9 is set to the playback side, [STARTREc=DISP8...] is checked in flow 287, 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 a rewind FO operation is performed, and it is very inconvenient to set the stop position again. In this embodiment, when the operation knob 9 is operated after setting by key operation, the tape count value and the set value are compared and an error is detected or the set value is protected after the operation knob 9 is operated. It is becoming more and more like this. That is, if the playback operation is performed after setting the stop position and the operation knob 9 is set to the stop side once before reaching the stop position, in the flow 199, [DIS
PROc+TREC] processing, and tape count value (
DISPREC content) is Tp. Transferred to OO. Then, when you turn the operation knob 9 to the rewind side and try to rewind to the part you missed, in flow 206, [[ST]
If the flag [ST] has been 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 described above, when operating the operation knob 9 during the playback operation after setting the stop position, the flow 186
Since the flag [ST] is always reset, an error will not occur.

Next, when the operation knob 9 is turned to the stop side, the flag [A] is set.
FT] 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 34
If you set it to the stop side just before it turns on, flow 199
TRSC stored in [DISPREC-+TREC]
The contents of the tape count value (the contents of DISPREO) no longer match. This is because even after the arithmetic control unit 36 recognizes the stoppage (flow 200), the take-up reel table 24 continues to rotate due to inertia.
This is because the counting process continues under the conditions of [SUB]. Therefore, if the key operation is 5, the above flow 23
3 flag [. Check whether [AF'T] is set [U Positive T] Set] and set the flag [AFT]
is set (flow 200), flow 3
Proceed to 00 and perform the next process.

That is, in flow 3040, [[AFT')ReSe
t. ．． DISPREC-+TREC processing is performed to reset the flag AFT, and at the same time, the correct tape count value (contents of DISPREC) at the time when the rotation of the take-up reel stand 24 has completely stopped is transferred to TREC and stored therein. ing. Next, error display during recording operation will be explained.

The recording operation in this embodiment can be performed by pressing the recording button 10 seven times and turning the operating knob 9 to the playback side, and the control over the stop position is the same as for the playback operation. However, if the playback start position is controlled in the same way as in the playback operation, the motor 19 rotates at high speed until it reaches 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. In other words, when you press the record 7 button 10,
When the specified digit is 8 digits, the input at input terminal K8 is “゜1゛” (K
=8), and flows 132, 142, 163, 164
, 165, 166, and 167 in this order. In this flow 167, a [PRECDIGIT')Set] process is performed, a flag 1CRE] is set, and the flow advances to flow 168. In flow 168, [DIGIT=8] is checked, and if the designated digit is 8 digits, the process advances to flow 301. In flow 301, [[CuE′)Set] is checked, and if the flag [CUE] is not set (playback start position is not set), the process proceeds to flow 123, and recording is performed as described above. . On the other hand, if the flag [CUE] is set (the playback start position is set), the process proceeds from the above flow 301 to flow 262, and the following flows 293, 295, 296, etc.
Processing is performed in the order of 290, 291, and 123. As a result, "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 at the time of setting by key operation. In other words, 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, but it is also possible to perform setting by key operation after the recording button 10 is operated. However, setting the playback start position causes the above-mentioned problem, so
An error will occur only in this case. That is, when the recording button 10 is pressed and the playback start position is set, the [[REC] Set] check is performed in the flow 267, and if the flag [REC] is set (flow 167), the process proceeds to flow 262. An error occurs. Also, when the playback operation is fast forwarding to the playback start position (the flag [CUE] is set),
When the recording button 10 is pressed, the following processing occurs. That is, if [[CUE]Set] is checked in the flow 301 and the flag [CUE] is set (flow 268), then the flow 262, 293, 294,
Processing is performed in the order of 295, 296, 290, 291, and 123.

Then, the motor 19 stops rotating and “゜E゛,゛゜P.゛” is displayed. Next, the pause (decimal point) key 4
The pause operation using q will be explained.

That is, the sawing operation can be stopped by pressing the pause key 4q during the reproduction operation. For example, if you press the pause key 4q now, when the designated digit is 1 digit, the input at the input terminal K8 becomes ゜"1゛ (K=8), and the flows 132, 142, 1
63,164,165,166,167,168,16
Processing is performed in the order of 9, 170, and 207. Above flow 16
In step 7, the [PRE (DIGIT) Set] process is performed and the flag [POINT] is set. Also flow 207
[DIGIT=6] is checked, and in this example where the designated digit is one digit, the process proceeds to flow 302. flow 3
02, a [[PLAY]Set] check is performed, and if the flag [PLAY] is set (flow 167), the process advances to flow 303. In flow 303, [Pse
[Pset
．． , MSON] and proceeds to flow 123. As a result, "P." is displayed and the rotation of the motor 19 is stopped.Next, when the pause key 4q is released, when the designated digit is 1 digit, the input at the input terminal K8 is ゜゜0゛ (K=0). , flows 132, 134, 189, and 190 are performed in this order. In this flow 190, [DIGIT=1] is checked, and in this example where the designated digit is 1 digit, flow 3 is executed.
Proceed to 05.

Flow 305 [PRE (DIGIT) Reset]
The processing is performed, the flag [POINT] is reset, and the process proceeds to flow 139, and the display of "゜P." continues. Then, when the pause key 4q is pressed again, the input is performed when the sampling digit is 1 digit. The input of K8 at the end is "1" (K = 8). Reflow 132, 142, 163, 164, 165, 1
66,167,168,169,170,207,30
Processing is performed in the order of 2, 303, and so on.

In the above flow 167, [PRE(DIGIT)Set]
Process and set the flag [POINT] again.

Further, in flow 303, [Pset] is checked, and if ゜゜P゛ is set (flow 304), the process advances to flow 306.

In the flow 306, [Preset. ．． MSOFF] processing and proceeds to flow 123. As a result, the "P" display disappears, the motor 19 starts rotating, and reproduction is performed.
As explained above, by repeatedly pressing the pause (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 beginning or 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 process proceeds to flow 123, where a display cycle is performed by the input check routine of the input terminal K8. The specified digit is repeatedly executed from the 9th digit to the 1st digit, and the contents of DlSPR8C are displayed on the display section 5. Then, the specified digit is “゜0
If "P" is reset, proceed to flow 143 and check [Pset], and if "P" is reset, proceed to flow 1.
Proceed to step 44. In flow 144, [[PLAY')Set
] is checked, and if the flag [PLAY] is set, the process advances to flow 187. In flow 187,
PcO + 15 → PCOUNT] processing, POO
The contents of UNT are changed to 11 degrees and the process proceeds to flow 188.
In flow 188, [PO. UNT = 200] is checked, and as long as the content of PCOUNT does not reach "゜200゛", the process proceeds to flow 125, and the display cycle using jθ is performed again in the input check routine of the input terminal K8. If the rotation stops and no new signal is input to the input terminal K8, the PC
The contents of OUNT will be increased by "°+1". In other words, if the reel rotation pulse is not input, the contents of PCOUNT will continue to increase.When the contents of PCOUNT reach "200", the flow will start from flow 188. 3
Proceed to step 07 and check [[RE■]Set]. If the flag [REV] is set, that is, in the case of rewinding, the process advances to flow 308 and the flag [FO
] is set [[FO]Set] and the process proceeds to flow 309. On the other hand, if the flag [REV] is reset,
That is, in the case of playback, the flow 308 is skipped and the process proceeds to flow 309. In flow 309, [MSON. ．． P
set] process, thereby the motor 19 stops,
゜゜P.゛ is displayed. Now, in this embodiment, it takes about 67 r1 to process the input check routine for the input terminal K8 and the routine to change PcO to ゜゜+1゛. Since the time required is S, the fact that the contents of PCOUNT become ゜"200゛ means that about 1 or 2 seconds have passed 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. As long as the take-up reel stand 24 continues to rotate, the reel rotation pulses are input to the calculation control unit 36 at intervals of 0.8 seconds. Therefore, the above P. O
The fact that the content of ゜“200゛” clearly indicates that it is the end of the tape.
Since the take-up reel stand 24 does not rotate even when a rewind operation is performed without a magnetic tape attached, the motor 19 stops in the same way as in the case described above, and it is not possible to notify that the magnetic tape is not attached. can. On the other hand, when the take-up reel stand 4 is rotating (the tape is not at the end), when the reed switch 34 is turned off, the flow 216 shows [0-
+PCOUN,] processing is performed to clear the old contents of PcOu.

Therefore, the reel rotation pulse is normally 0. If it is input at the pilgrimage interval, POOuNT(7)j content is 4"200
The state shown in ``2'' will not occur, and the motor 19 will not stop.
In this embodiment, when the operation knob 9 is operated, a signal is inputted from the key input section 39 to the arithmetic control section 36 to make it recognize the operation content of the operation knob 9 at the timing when the power switch 18a is turned on. ing. This means that if the timing of turning on the power switch 18a is delayed, the motor 1
The start of rotation of motor 9 is delayed, and the above-mentioned function is activated, causing motor 19 to start rotating.
This is to prevent the phenomenon of stopping. Next, the role of the flag [FO] during auto end stop will be explained.

In other words, as mentioned above, when the tape is rewound to the beginning of the tape, the tape end stop function is activated and the flag [FO] is set. When I put it back, DISPROO
The content of is 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 9i is always possible from the tape count value "'0". In other words, when the operation knob 9 is set to the stop side, the flows 132, 1
34,1 苧9, 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 proceed to flow 311.
Proceed to. In the flow 311, the process (A)→DISPLEC] is performed, thereby clearing the contents of DISPREO. Note that even if you play to the end of the tape or rewind to the beginning of the tape, ゜゜P.゛Not displayed (stage before the contents of PCOUNT reaches “゜20σ゛”)
In this case, since the flag [FO] is not set, the tape count value will not be 0 even if the operation knob 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. In flow 312, [Ereset] processing is performed, and in 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')S
et] is checked, and if the flag [SET] is not set, the process advances to flow 315. In flow 315, [ST)Set] is checked, and if the flag [ST] is not set, the flow advances to flow 316. In flow 316, [DlSPRCC-+TREC] processing is performed, whereby the tape count value (contents of DISPROO) is transferred to TREO, and the flow advances from flow 317 to flow 101, which will be described later, to enter computer mode. Then, when the selector switch 3 is set to the tape count mode side again (switch 3a off, switch 3b on), the input terminal K8
The digit signal D9 is output to flows 112, 120,
The process is performed in the order of 121, the flag [TAPE] is set, and the process proceeds to flow 122. In flow 122, [TRIIl
l. C-) DISP8OO] processing, whereby the tape count value (contents of TREG) is transferred to DISPREC, and it is possible to continue the tape count operation. The mode switching described above will be explained in more detail.

That is, in this embodiment, during playback, for example, recorded content to be calculated is played back, and the changeover switch 3 is set to the computer mode (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. If you press the pause key 4q during playback to pause the playback, and then set the changeover switch 3 to the computer mode side, the flow 132, 134, etc. will be displayed as described above.
89, 190, 191, 192, 193, 194, 31
2,313,314,315,316,317,101
Processing is performed in this order, and as a result, the computer mode is entered and MS-ON (flow 304) continues. At this time, even if the operating knob 9 is operated, the switch 3b is off, so no key signal is output from the key input section 39 to the input terminal K8. 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, the flow 112
, 120, 121, 122, 123 are processed in the order of tape count mode, and the tape count value (T
The contents of REC) are transferred to DISPREG (Flow 1
22) Displayed in the input check routine of input terminal K8. Further, the locked state continues until the operating knob 9 is turned to the stop side. This occurs in flow 317 [TRO. , PRE (DIGIT), clear all except MS] flag [PLAY] is not cleared,
Therefore, when the designated digit is other than 7 digits, the process is repeated in the input check routine of the input terminal K8, and even when the designated digit is 7 digits, flows 132, 134, 1 are repeated.
This is because the processing is performed in the order of 35, which causes the processing to be repeated in the input check routine for input G8. In addition, keys (numeric keys, "S" key 4b1 "ST" key 4
If the selector switch 3 is set to the computer mode side during the setting by operating the C1 "STOP" key 4d), the flowcharts 313 to 3
Check [[N]Set] for each of 15,
[[SET]Set] check and [[ST]Set
] The check is performed, skipping flow 316 and proceeding to flow 3.
Proceed to step 17. Therefore [DISPREC→TREC]
Since no processing is performed, the contents of the TROC, ie, the tape count value, are protected. In the above embodiments, a case has been described in which the magnetic recording and reproducing apparatus with a computer is used. However, a computer is not necessarily required, and a magnetic recording and reproducing apparatus called a simple micro cassette tape recorder or a normal cassette tape recorder is used. It can also be implemented in the same way.

In addition, the present invention is not limited to the embodiments described above, and it goes without saying that various modifications can be made without departing from the gist of the invention. As described in detail above, according to the present invention, there is provided a means for counting the amount of tape travel, at least one setting means for setting a desired position by operating keys on a keyboard, and a value set by the setting means being interpreted as necessary. a display section for selectively displaying the counted value by the counting means and the set value by the setting means; Since a means is provided for displaying the count value of the counting means at the set point, that is, the tape count value θ, on the display section, it is possible to easily judge whether to perform a rewind operation or a fast forward operation to a desired position. At the same time, it is possible to provide a magnetic recording and reproducing device which is convenient because it is possible to quickly search for a desired position by operating based on this judgment after correcting the set value to the correct setting value, and whose operating efficiency is significantly improved.

[Brief explanation of drawings]

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 input/output contents of the display converter, FIG. 9 is a diagram showing an example of a zero suppression display state in tape count mode, 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, 4a.
...No.6 R99ki. , 4c. ．． ．． ．． 64ST99ki,,
4d. "STOP" key, 5...Display section, 9.
...Operation knob, 10...Record button, 18...
...Switch mechanism, 18a...Power switch, 18b...Fast forward switch, 18c...
・Rewind switch, 19...Motor, 24...
...Take-up reel stand, 25...Rewind reel stand, 2
6... Magnetic head, 33... Magnet, 3
4... Reed switch, 36... Arithmetic control section, 37... Drive control section, 39...
Key input section, 246-248, 277-281...
- Setting cancellation flow, 122...Tape count value display transfer flow.

Claims (1)

[Claims] 1. A magnetic recording and reproducing apparatus that records or reproduces information on a running magnetic tape, comprising: a counting means for counting the running distance of the tape; and at least one setting means for setting a start position and a stop position of the tape. , a canceling means for canceling the set value as necessary when setting by the setting means; a display section for selectively displaying the counted value by the counting means and the set value by the setting means; When the set value by the setting means is canceled, means for displaying the counted value by the counting means on the display section, and the running of the tape or What is claimed is: 1. A magnetic recording and reproducing device comprising: a control means for performing control such as stopping.