JPH0215907B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a search device that automatically searches for a desired image on a recording medium by counting marks on the recording medium such as a film on which a large number of images are recorded.

Conventionally, films used in search devices built into microfilm readers and the like are provided with counting marks on the side edges of each frame of the film. The frame is automatically searched.

The above search device illuminates the mark on the film with a lamp, detects the luminous flux from the mark with a mark sensor having a photoelectric conversion element as the film is moved, counts the output signal of the mark sensor with a counter, and counts the output signal of the mark sensor with a counter. A comparator circuit compares the counted contents of the device and the desired frame number entered from the input device (keyboard), and when the two match, a stop signal is issued from the comparator circuit to the drive control circuit, stopping the drive system that transports the film. The desired frame is then held stationary at a predetermined position to be projected onto the screen.

The types of film used in such search devices are those that have marks of the same size corresponding to the images, and those that classify many images on the film into several categories and correspond to the classified images. There are films with marks of different sizes. When searching for a desired image on a film having marks of a plurality of classified sizes, this image can be searched by inputting the search number of the classification unit of the desired image. For example, a search is performed using a film that has a small mark of a small size corresponding to an image classified as a small item, and a medium mark of a larger size than the small mark corresponding to an image classified as a medium item. In this case, images classified into the desired medium and small items can be searched by inputting the search number of the medium item and the search number of the small item of the desired image. Note that by inputting only the search number of the middle item, it is possible to search for images classified into the desired middle item.

When searching using films that have such classified marks, you may accidentally enter a search number for a classification unit that is classified into multiple types when using a film that has one type of mark, or you may accidentally enter multiple classification unit search numbers. If a search number for a film with one type of mark is entered using a film with a mark of the size of , the search cannot be performed correctly. In this way, if the user (operator) gives a search command that does not match the film due to a mistake, the wrong image will be searched, or the film will be sent to the end because there is no image matching the search number. As a result, the user only learns for the first time that the searched image is incorrect, or that the search command or the film used is incorrect because the film has been sent to the end. This method has the disadvantage that it takes time to detect an erroneous operation, which reduces the efficiency of search operations. In particular, users who are not accustomed to search operations are likely to make the above-mentioned erroneous operations.

The present invention provides a search device that eliminates the above drawbacks.

The present invention will be explained below using specific examples shown in the drawings.

FIG. 1 shows various films used in the present invention. Film F ₁ has one type of small-sized mark m on the side of the frame f on which an image is recorded, the density of which differs from the periphery corresponding to each frame. ₁ , this small mark
_m1 is for searching images classified into small items for each frame. The film F ₂ has one kind of medium mark m ₂ having a size larger than the small mark m ₁ corresponding to each frame, and this mark m ₂ is used to search for images classified into small items.

Film F ₃ has two types of marks: large mark m _{3 and} small mark m ₁ , which are larger than mark m 2. Large mark m ₃ searches for images classified into medium items, and small mark m ₁ searches for images classified into medium items. This is for searching images classified into small categories. For example, when recording a drawing of a car's parts on film, the structure of the car is classified into several units, and a large mark ( _m3) indicating the middle item is recorded on the side of the frame in which the exploded view of each unit is recorded. In the frame following the frame in which the exploded view of the unit is recorded, record the component parts diagram, part number, price, etc. of this unit, and on the side of each frame in which this parts diagram, etc., are recorded, display small items m ₁
When using this film, you can search for the frame in which the exploded view of the desired unit is recorded by detecting the large mark m ₃ , and by detecting the small mark m ₁ .
If detected, the desired parts diagram in the desired unit,
You can search for pieces that record part numbers, prices, etc. Film F ₄ has a large mark for medium items M ₃
The small items are made up of medium marks _m2 . Film _F5 has the following types _of marks: small mark _m1 , K mark _m2 , and _large mark _m3 .
searches for images categorized as medium items and marks them with small marks.
_m1 is for searching images classified into small categories. For example, when recording parts drawings of various automobiles on film, three types of large, medium, and small marks can be selectively placed on the side of each frame so that the automobile model, exploded view of the unit, and component parts diagram can be searched. When using this film, if the large mark _m3 is detected, the configuration diagram of the desired car will be obtained, if the medium mark _m2 is detected, the exploded view of the desired unit will be obtained, and the small mark _m1 will be detected. Then, you can search for desired parts diagrams, etc.

The present invention provides a search device that can easily search classified images in any classification unit using any of the above-mentioned films.

In addition, in the above example, the mark on the film is 2.
In the case of types, the larger mark is classified as a medium item and the smaller mark as a small item, but this may be reversed, and the size of the mark and the classification item can be made to correspond as desired.

FIG. 2 shows a film reader to which the present invention is applied. In the drawing, 1 is a removable cartridge that stores a long film in the form of a roll, 2 is a guide roller, 3 is a film guide plate,
4 is a lamp for illuminating the film; 5 is a condensing lens; 6 and 7 are guide plates arranged opposite each other across the film transport path; 8 is a capstan roller; 9 is a pinch roller; 10 is a take-up reel; 11 is a This is a film feed roller. The cartridge 1 and take-up reel 10 are connected to a film tensioning and winding motor, and the capstan roller 8 and delivery roller 11 are connected to a film drive motor.
The film F in the cartridge 1 is sent out by the feed roller 11, and after being wound around the take-up reel, the film F is stretched between the cartridge 1 and the take-up reel 10 and wound onto the take-up reel by the capstan roller 8. or rewound into the cartridge 1. 16 is a mark detection device, 17 is a projection lens, and 18 is a screen.

The film F is illuminated by light from the lamp 4 between the glass plates 6 and 7, and the image of the illuminated frame is enlarged and projected onto the screen 18 by the lens 17.

The mark detection device 16 has four mark sensors, and each mark sensor has a light guide member 20, 21, 2 made of an optical fiber bundle as shown in FIG.
2, 23, and a light receiving element 25 consisting of a photoelectric conversion element.
26, 27, and 28, respectively.
One end of each light guide member 20 to 23 is disposed opposite to the mark movement path of the film F and spaced apart by a predetermined distance in the film movement direction, and the other end is arranged to receive light from the light receiving elements 25 to 28. The light receiving elements 25 to 28 sequentially detect optical signals from the marks. As shown in FIGS. 5A, B, and C, the distance between the end surfaces of the light guide members 21 and 23 facing the film transport path in the film transport direction is equal to the image m ₃ of the large mark m 3 shown in FIG. _1. ′ and longer than the image m ₂ ′ of the medium-sized mark m ₂ . The distance between the end faces of the light guide members 20 and 23 facing the film transport path in the film transport direction is slightly longer than the length of the image m ₃ ' of the large mark m ₃ shown in FIG. The distance in the film transport direction between the end faces facing the film transport path of 21 and 22 is slightly shorter than the length of the image m ₂ ' of the medium-sized mark m ₂ shown in _FIG . image
m ₁ ', and the light guide members 20 and 2
The interval in the film transport direction between the end faces facing the film transport path of No. 1 is set and arranged to be longer than the length of the image m ₁ ' of the small-sized mark m ₁ . Therefore, if the marks m ₁ , m ₂ , m ₃ are opaque, the light incident on one end of the light guide member 21 will be reflected by the small mark m ₁
When blocked by the other light guide member 20,
Light enters the light guide members 21 and 22 and 23, and
When the light incident on the light guide member 22 is blocked by the medium mark _m2 , the light enters the other light guide members 20 and 23, and the light incident on the light guide members 21 to 23 is blocked by the large mark _m3 . When the light guide member 20 is blocked, light enters the other light guide members 20. If the mark is transparent, the above is the opposite. For convenience of explanation, the following description assumes that the marks on the film are opaque.

FIG. 4 shows a search circuit for searching for a desired image using the film shown in FIG. Reference numerals 34 to 37 are amplifiers that amplify the output signals of the light receiving elements 25 to 28, and when the light receiving elements detect an optical signal from the mark (when the light entering the light receiving element is blocked by the mark), the output signal becomes "0". " mark detection signal is output. V ₁ to _{V 6} are inverters,
A ₁ to _{A 2} are AND gates, R ₁ to _{R 5} are OR gates,
NR is a NOR gate, ER ₁ to _{ER 3} are exclusive logic circuits (Exclusive OR circuits), 40 to 42 and 143 to
148 is a flip-flop circuit, 45-47 are addition/subtraction counters, 50-52 are registers, 55-5
7 is a comparison circuit, 60 is an input device for inputting a search number, 61 to 63 are register selection switches, 65
is a forward/reverse motor 6 that drives the counters 45 and 46, the capstan roller 8, and the feed roller 11.
6, and a control circuit 7 that controls a motor (not shown) that drives the cartridge 1 and the take-up reel 10.
0 is a timer, and 71 is an alarm.

The light receiving element 25 is provided to stop the film frame at a fixed position regardless of the size of the mark, and may be omitted if the stopping position does not need to be precisely regulated. Other light receiving elements 26, 2
7 and 28 are for detecting the size of the mark.

AND gates _A1 to _A3 output signals corresponding to the mark size. That is, when the light receiving element 25 is not outputting a mark detection signal, the light receiving element 26 outputs a mark detection signal, and the light receiving elements 27 and 28 do not output mark detection signals at the same time. AND gate _A1 is opened. , outputs a small mark detection signal from the AND gate A ₁ indicating that the small size mark m ₁ has been detected. This signal sets the flip-flop circuit 40, and the flip-flop circuit 40 stores the presence of the small mark _m1 on the film to be used.

Further, when the light receiving element 25 is in a state where it is not outputting a mark detection signal, the light receiving elements 26 and 27 simultaneously output a mark detection signal, and the light receiving element 2
8 does not output a mark detection signal, AND gate A ₂ opens, and AND gate A ₂ outputs a medium mark detection signal indicating that a medium-sized mark m ₂ has been detected. The flip-flop circuit 41 is set by this signal, and the flip-flop circuit 41 is set.
remembers that the medium mark _m2 was present on the film being used.

Further, when the light receiving element 25 is not outputting a mark detection signal, the light receiving elements 26, 2
When marks 7 and 28 simultaneously output mark detection signals, AND gate A ₃ opens, and AND gate A ₃ outputs a large mark detection signal indicating that a large size mark m ₃ has been detected. This signal sets the flip-flop circuit 42, and the flip-flop circuit 42 stores the presence of the large mark _m3 on the film being used.

Reset input terminals R of flip-flop circuits 40-42 are connected to signal line C, and when a reset signal of "1" is sent to signal line C, each flip-flop circuit 40-42 is reset. The reset signal is generated when the power switch is turned on or when the reset switch of the input device 60 is turned on.

On the other hand, the signals output from each AND gate A ₁ , A ₂ , A ₃ are OR gate R ₁ , AND gate A ₂₄ , A ₁₄
1st via AND gate A ₁₄ or A ₁₅
It is sent to a counter 45.

AND gates _A4 - _A8 are opened and closed depending on the storage state of each flip-flop circuit 40-42. That is, AND gate _A4 opens when flip-flop circuit 40 stores a small mark, flip-flop circuit 41 stores a medium mark, and flip-flop circuit 42 stores no large mark. Similarly, AND gate A ₅ is opened when the medium mark and large mark are stored, but no small mark is stored, and AND gate A ₆ is opened when the small mark and large mark are stored, and the medium mark is stored. AND gates A ₆ and A ₇ open when the small mark, medium mark, and large mark are memorized.

AND gates A ₉ to _{A 13} are for obtaining count signals from marks classified into medium items or higher among marks classified into a plurality of items on the film, and are used to obtain count signals from marks classified into medium items or higher. Mark detection signals corresponding to mark sizes are classified into count signals of predetermined items according to the state.
The AND gate A ₂₄ is used to obtain count signals from marks classified into small items. If there are marks of two or more sizes, an AND gate is executed when the second largest size mark is detected.
Any one of A ₉ to _{A 12} is selectively opened, and at this time, the signals output from these AND gates pass through OR gate R ₂ as counting signals classified into medium items, and then pass through AND gate A ₁₆ or A ₁₇ . It is sent to the second counter 46. Also, when the smallest size mark is detected, OR gate R ₁ and NOR gate NR open, thereby opening AND gate A ₂₄ , and the signal output from AND gate A ₂₄ is output as a count signal classified into small items. _A14
Alternatively, it is sent to the first counter 45 via _A15 . When marks of three different sizes exist on the film, AND gate A ₁₃ opens when the third largest size mark is detected, and the signal output from AND gate A ₁₃ at this time is classified into large items. The counted signal is sent to the third counter 47 through AND gate _A18 or _A19 .

A signal indicating the film feeding direction is input to the signal line d, and in this embodiment, a signal of "0" is input when the film is being fed from the cartridge 1 to the take-up reel 10 (hereinafter referred to as forward feeding). However, when feeding from the take-up reel 10 to the cartridge 1 (hereinafter referred to as reverse feeding), a signal of "1" is input. Either one of AND gates A ₁₄ and A ₁₅ is selectively opened depending on the film transport direction, and the counting signal sent from AND gate A ₂₄ is passed through AND gate A ₁₄ when the film is being transported forward. It is sent to the first counter 45 for addition and counting, and when the film is being fed backwards, it is sent to the first counter 45 for subtraction and counting through the AND gate _A15 . Therefore, the first counter 45 adds or subtracts the count signals classified into small items depending on the film transport direction.

One of the AND gates A ₁₆ and A ₁₇ is selectively opened depending on the film transport direction, and the counting signal sent from the OR gate R ₂ passes through the AND gate A ₁₆ when the film is being transported forward. It is sent to a second counter 46 for addition and counting, and when the film is being fed backwards, it is sent to a second counter 46 for subtraction and counting through an AND gate _A17 . Therefore, the second counter 46 adds or subtracts the count signals classified into medium items depending on the film transport direction. Also, one of the AND gates A ₁₈ and A ₁₉ is selectively opened depending on the film transport direction, and the counting signal sent from the AND gate A ₁₃ is activated when the film is being transported forward _.
The data is sent to the third counter 47 for addition and counting, and when the film is being fed backwards, the data is sent to the third counter 47 for subtraction and counting through the AND gate _A19 . Therefore, the third counter 47 adds or subtracts the count signals classified into major categories depending on the film transport direction.

A signal indicating the film feeding direction sent to the signal line d can be generated by detecting the rotational direction of the motor 66. This signal indicating the film feeding direction can also be generated by other methods.

The input device 60 has numeric keys for inputting the search number of a desired image and other command keys, and when inputting the search number, register selection switches 61 to 6 are used.
Close 3 and operate the number keys. Input device 60
When inputting a search number, first close the switch 63 and input the search number for the major item, then the search number for the major item passes through AND gate A ₂₂ and enters the third
It is stored in register 52. Next switch 63
When the user opens the switch 62, closes the switch 62, and inputs the search number for the middle item, the search number for the middle item passes through the AND gate _A21 and is stored in the second register 51. Next, open the switch 62, close the switch 61, and enter the search number for the small item.
The search number for this sub-item passes through AND gate A ₂₀ and is stored in first register 50 . When using a film with marks of three different sizes, the desired search numbers are stored in the first, second, and third registers 50 to 52, respectively, and when using a film with marks of two different sizes, Desired search numbers are stored in the first and second registers 50 and 51, respectively, and when using film with marks of one type of size, the first register 50
Only the desired search number is stored.

The first comparison circuit 55 compares the search number stored in the first register 50 and the count value of the first counter 45, and outputs a match signal when the two match.
The second comparison circuit 56 compares the search number stored in the second register 51 and the count value of the second counter 46, and outputs a match signal when the two match. The third comparison circuit 57 compares the count value of the third register 52 and the third counter 47, and outputs a match signal when the two match.

The control circuit 65 includes an input device 60 and a register 50.
~52, comparison circuits 55 to 57 and AND gates
It receives a signal from A ₂₃ and outputs a signal to control the first and second counters 45, 46, motor 66, etc. in accordance with this input signal. When the control circuit 65 receives a signal from the third register indicating that the search number has been input to the third register 52, the control circuit 65 controls the first and second registers.
A signal to prohibit the counting operation of the counters 45 and 46 is sent to the first and second counters 45 and 46, and when a match signal is received from the third comparison circuit 57, the prohibition of counting of the second counter 46 is canceled. A signal is sent to the second counter. Further, when the control circuit 65 receives a signal from the second register 51 indicating that the search number has been input to the second register 51, the control circuit 65 sends a signal to the first counter 45 to inhibit the counting operation of the first counter 45. , after that, when a match signal is received from the second comparator circuit 56, a signal for canceling the counting prohibition of the first counter 45 is sent to the first
It is sent to counter 45. Further, when the control circuit 65 receives a search start command signal from the input device 60, the control circuit 65 sends a signal to the motor 66 to rotate the motor 66 in a predetermined direction.
When a match signal is received from the first comparison circuit 55, a signal is output to stop the motor 66 and to activate a brake device (not shown) for controlling the rotation of the film feeding roller. Further, the control circuit 65 stops the motor 66 when the AND gate A ₂₃ opens, or controls the motor 66 so as to feed the film backward.
Outputs a driving signal from.

The flip-flop circuit 143 is an AND gate.
It is set by the count signal (mark detection signal) classified into small items outputted from A ₁₄ to remember that there is a mark classified into small items on the film, and flip-flop 145 operates an AND gate.
It is set by the count signal (mark detection signal) classified as a medium item outputted from A ₁₆ to remember that there is a mark classified as a medium item, and the flip-flop circuit 147 outputs an AND gate.
The presence of a mark classified as a large item is set by the count signal (mark detection signal) output from A ₁₃ that is classified as a large item, and each flip-flop 143, 145, 147 is connected to the signal line C. The memory of the classification item is erased by the reset signal.

Further, the flip-flop circuit 144 is set when a search number is sent to the first register 50 or the second register 51 and stores the classification item of this search number, and the flip-flop circuit 146 is set to store the classification item of this search number.
It is set when a search number is sent to the register 51 or the third register 52, and stores the classification item of this search number.
48 is set when the search number is sent to the third register 52 and stores the classification item of this search number, and each flip-flop circuit 144, 146, 1
48 is reset by a reset signal on signal line C to erase the memory of the classification item.

Note that even if the search number of the small item is not sent to the first register 50, the flip-flop circuit 144 sends the search number of the medium item and large item to the second and third registers 51, 52, and the second and third registers 51, 52. It is set when the item is sent, and the classification of the small item is stored assuming that an input command for the search number of the small item has been received. When searching only for images of the desired medium or large item, the search number for the small item is not entered, so when a search command for a medium or large item is received, it is assumed that a search command for a small item has been issued. This is to set the flip-flop circuit 144. Similarly, the flip-flop circuit 146 is set when the large item search number is sent to the third register 52, and stores the medium item classification assuming that a medium item search command has been issued.

The exclusive OR circuit ER ₁ compares the classification items stored in the flip-flop circuits 143 and 144,
When they do not match, that is, when one flip-flop circuit is set and the other flip-flop circuit is reset, a signal of "1" is output. Similarly, the exclusive OR circuit ER ₂ compares the classification items stored in the flip-flop circuits 145 and 146, and outputs a signal of "1" when the two do not match _. , 148, and outputs a signal of "1" when the two do not match.

The timer 70 operates for a set time when a search start command key of the input device 60 is operated to command a search start, and outputs a signal of "1" after the set time has elapsed. Exclusive OR circuit ER ₁ after activation of timer 70
~When a "1" signal is output from ER ₃ , that is, when the classification item of the film mark to be used and the classification item of the search command do not correspond, AND gate A ₂₃ opens, and the signal output from AND gate A ₂₃ causes The motor 66 is stopped via the control circuit 65,
Alternatively, the motor 66 is driven in a direction to rewind the film into the cartridge 1, and the alarm 71 is activated to clearly notify the user that an erroneous operation has been made. The setting time of the timer 70 is set to the time from when the leading edge of the film starts to be transferred from the cartridge to the take-up reel until all types of marks stored on the film pass the detection position of the mark detection device 16. Generally, marks of all sizes are recorded within a length of 2 m from the leading edge of the film, so it is sufficient to set the time required to feed the film by this length. In addition, instead of a timer, a length measuring device is provided to measure the film feeding amount, and the length measuring device sends a "0" signal to AND gate A ₂₃ until the length measuring device measures the film feeding amount to the set length. After feeding and measuring the set length, a "1" signal may be sent.

Furthermore, by storing marks of all sizes recorded on the film between the leading edge of the film and the first image on the film, the time required to detect an erroneous operation can be further shortened.

Next, the operation of the above device will be explained. Now, a case will be described in which the cartridge containing the film _F3 shown in FIG. 1 is used to search for a desired image in this film. Let A be the search number for the middle item of the desired image, and B be the search number for the small item. The user first presses the register selection switch 62.
close and enter the search number A into the input device 60,
Next, when the switch 62 is opened and the switch 61 is closed to input the search number B into the input device 60, the search number A is stored in the second register 51 and the search number B is stored in the first register 50. Before starting the search, flip-flop circuits 40-4
2,143 to 148 are reset, and each counter 4
It is assumed that the count contents of 5 to 47 have been erased. After inputting the search number, when the search start command key of the input device 60 is operated, a motor drive signal is output from the control circuit 65, the motor 66 is driven in the forward direction, and the timer 70 is activated. The feed roller 11 and the capstan roller 8 are rotated by the drive of the motor 66, whereby the film F3 is fed out from the cartridge 1, and the film _F3 is fed out from the lamp 4 and lens 1.
7 to the take-up reel 10, and is automatically wound onto the take-up reel. Among the four light receiving elements 25 to 28 of the film, light receiving elements 26, 27, 2
8 simultaneously output mark detection signals, that is, the large mark m ₃ causes the light receiving elements 26, 27, 2
When the light incident on 8 is blocked, the AND gate
_A3 is opened, and the flip-flop circuit 42 is set by the large mark detection signal output from the AND gate _A3 . Further, when only the light receiving element 26 outputs a mark detection signal, that is, when the light entering the light receiving element 26 is blocked by the small mark _m1 , the AND gate _A1 opens, and the small mark detection signal output from the AND gate _A1 Flip-flop circuit 40 is set. Flip-flop circuit 4
AND gate when 0,42 is in set state
When A ₃ outputs a large mark detection signal, AND gate A ₁₁ opens, and the signal output from AND gate A ₁₁ passes through OR gate R ₂ as a count signal classified into medium items and is sent to AND gate A ₁₆ . At this time, since the film is being fed forward, the AND gate _A16 is opened, and the count signals classified as medium items are added and counted by the second counter 46.

On the other hand, the mark detection signals output from AND gates A ₁ and A ₃ pass through OR gate R ₁ and are sent to AND gate A ₂₄ . When AND gate A ₃ outputs the large mark detection signal, NOR gate NR is closed, so AND gate A ₂₄ does not open. When AND gate A ₁ outputs a small mark detection signal, NOR gate NR opens, so AND gate A ₂₄ opens,
The output signal of AND gate A ₂₄ is sent to the first counter 45 via AND gate A ₁₄ as a signal classified into small items. 1st
A counting prohibition signal is being sent to the counter 45, and the first
Counter 45 does not perform counting operation. As described above, the second counter 46 performs a counting operation every time the mark detection device detects a large mark.

After the film starts to move forward, AND gate A ₁₄
The flip-flop circuit 143 is set by the output signal of AND gate A16, and the flip-flop circuit 145 is set by the output signal of AND gate _A16 . Further, when the search numbers are input to the first register 50 and the second register 51, the flip-flop circuits 144 and 146 are set, so the exclusive OR circuits _ER1 and _ER2 are not opened. On the other hand, flip-flop circuits 147 and 148
is in the reset state, so the exclusive OR circuit
ER ₃ won't open. Therefore, the AND gate A ₂₃ does not open after the timer 70 is activated, and as a result, the alarm 7
1 is not activated, this tells the user that this film can be used to search for images in the desired category.

As the film progresses, the count value of the second counter 46 increases, and the search number A in the second register 51 increases.
When the count value of the second counter 46 and the count value of the second counter 46 match, a match signal is output from the second comparison circuit 56. As a result, the control circuit 65 outputs a signal to cancel the counting prohibition, and this signal cancels the counting prohibition of the first counter 45. After outputting the coincidence signal from the second comparison circuit 56, the film _F3 is further fed forward, and the small mark detection signal outputted from the AND gate _A1 passes through the OR gate _R1 , passes through the AND gates _A23 and _A14 , and is then sent to the second comparison circuit 56. 1 counter 45 performs addition and counting. Thereafter, every time the mark detection device detects a small mark, the first counter 45 performs a counting operation, and when the search number B in the first register 50 and the count value of the first counter 45 match, the first counter 45 performs a counting operation.
A match signal is output from the comparator circuit 55, and a stop signal is output from the control circuit 65. This signal causes the motor 66 to immediately stop, the film _F3 stops, and the search operation is completed. When the film F ₃ stops, the images classified into the desired medium and small items are placed at a predetermined position between the lamp 4 and the projection lens 17, and at the same time as the search is completed, the images are transferred to the screen 1.
It can be observed on 8.

In addition, if you want to observe all the images classified into the desired middle item, or if you want to observe only the first image of the desired middle item, enter the search number of the desired middle item in the second register 51, and 1 register 5
If you do not enter the search number in 0, in this case, after searching for the image of the desired medium item (the image will be searched at the beginning of the group of images of the desired medium item), you can search the film one frame at a time. Once fed, all images included in the desired medium item can be viewed one after another on the screen.

Note that when the mark detection device detects the large mark at the beginning of the film _F3 , the AND gate _A11 does not open (the flip-flop circuit 40 is in the reset state), so the leading end of the film is inserted into the cartridge 1.
The second counter 46 is configured to add and count "1" in advance only when the search operation is started by sending the second counter 46. In other words, when starting the search operation from the first frame of the film, one count signal should be added in advance to the counter that counts the count signal corresponding to the mark classified into the largest item. .

After this, when searching for a new image in this film, input device 60 and switches 61 and 62 are used.
Enter the search number of the middle item and the search number of the small item of the desired image in the second and first registers 51 and 5.
If 0 is stored, a desired image can be retrieved without having to send the film back.

Next, replace the cartridge and insert the film shown in Figure 1.
A case will be described in which a search operation is performed when a cartridge containing F ₁ (or F ₂ ) film is loaded and searched. When using Film F ₁ , only images classified into small categories can be searched. Thinking that the user can search for images that have been mistakenly classified as medium items, the user enters the medium item search number and the small item search number into the input device 60.
, the first and second registers 50, 51
The flip-flop circuits 144 and 146 are set by sending the search number to the .

When a search start command is issued by operating the search start command key, the motor 66 is driven and the film is fed from the cartridge 1 to the take-up reel 10. While feeding the film, the mark detection device 16 detects a small mark m ₁
The small mark detection signal output from the AND gate A ₁ when detecting the AND gate A ₂₄ ,
A ₁₄ is opened and the flip-flop circuit 143 is set, but since no marks classified as medium items are recorded on this film, the AND gate is
A ₁₆ is not open and flip-flop circuit 145 is in reset. Therefore, the flip-flop circuit 145 does not remember the classification of the middle items, but
Since the flip-flop circuit 146 stores the classification of the middle items, both flip-flop circuits 14
The stored contents of 5 and 146 do not match, and the exclusive OR circuit ER ₂ outputs a "1" signal. timer 7
When the set time has elapsed after 0 is activated, the timer 70 outputs a "1" signal, and at this time the AND gate A ₂₃ opens, and the output signal of the AND gate A ₂₃ activates the alarm 71 and stops or reverses the motor 66. Rotate in the direction. The activation of the alarm 71 allows the user to know that he or she made a mistake in the search operation. When the film stops due to the stop of the motor 66, a rewind command key is operated on the input device to reverse the motor 66 and rewind the film into the cartridge (return it to the starting position) before giving a correct retrieval command. If the motor 66 reverses, the film is automatically rewound into the card cartridge 1 (returns to the search start position) and then a correct search command can be given.

Therefore, if an incorrect retrieval command is given, the user will immediately know that the retrieval command was incorrect after the film has been fed a short distance from the leading edge of the film.

The above-mentioned erroneous search operation can be caused by using films F ₃ and F ₄ in Figure 1 to give a search command for large items, or when only giving a search command for small items, using film F ₅ . When a search command is given for a medium or small item, when a search command is given for a small, medium or large item using a film with no marks recorded, or when the search command is correct but
This may occur when the wrong film is used, but according to the present invention, the above-mentioned erroneous operation can be detected in a short time, and work efficiency can be improved.

Note that if there are many types of mark sizes, as many mark sensors as can be used to discriminate the mark sizes should be provided.

Furthermore, the recording medium is not limited to roll microfilm, and various other media such as microfissure can be used.

[Brief explanation of drawings]

Fig. 1 is a front view showing one embodiment of a film applied to the present invention, Fig. 2 is a configuration diagram of a film reader to which the invention is applied, Fig. 3 is a perspective view of a mark detection device, and Fig. 4 is a search The circuit block diagrams in FIGS. 5A, 5B and 5C are diagrams for explaining the relationship between the end face of the light guide member and the image of the mark. 25, 26, 27, 28...mark sensor, 4
0 to 42, 143 to 148...flip-flop circuit, 45, 46, 47...counter, _A1 to _A22 ...and gate.

Claims (1)

[Scope of Claims] 1. Discrimination means for discriminating classification information indicated by the size of a mark provided corresponding to each image on an image recording medium to be transferred, and classification information and position information of a desired image. A search device comprising an input means for inputting data, and an erroneous operation detection means for comparing the classification information discriminated by the discriminating means with the classification information input to the input means and generating a signal when the two classification information do not match. 2. The search device according to claim 1, wherein transport of the image recording medium is stopped by a signal generated from the erroneous operation detection means.