JPS6239456B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information retrieval/copying apparatus for retrieving desired information and copying it.

Generally, in order to search for information on a film, marks for information retrieval are placed on the sides of the frames in which information is recorded, and the marks are counted, and the target number corresponding to the desired information and the number of counted marks are calculated. When a match is found, the motor that drives the film is stopped.

In addition to a reading device that magnifies the searched information on a screen and reads it, many of these search devices also have a copying device that obtains a copy of the information. The desired number of copies of a series of several frames included in one piece of information,
Devices that can be obtained automatically are also known.

Conventionally, when copying a desired number of copies of a piece of information consisting of a series of consecutive frames, copies are usually made from the last frame included in the desired information in order to obtain copies arranged in page order. Therefore, when copying the desired information after the search is completed, the first frame of the information next to the desired information is detected, and when the next first frame is found, it is moved back one frame and the last frame of the desired information is copied. The film is fed to detect the last frame, and copying starts from this last frame, which takes a long time to detect. .

Once the number of frames for a desired item is known, the information group for the desired item can be automatically and quickly copied using this number of frames.

Therefore, an object of the present invention is to provide an information retrieval device that can determine the number of pieces of information included in a desired item.

The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 shows an embodiment of the microfilm used in the retrieval device of the present invention. The microfilm 1 is made of a long film, and a large number of frames 2 are recorded on the film. On the side, a frame mark 3 is recorded that has a different light transmittance than the surrounding area for each frame, and on the other side of the frame, the light transmittance differs from the surrounding area for each piece of information related to the information content. Item mark 4 is recorded. One piece of information consists of at least one frame, and when one piece of information consists of multiple frames, the multiple frames are arranged in parallel,
Place a subject mark on the first frame of multiple frames.

Note that the frame mark and the subject mark are not limited to the embodiments, and the frame mark and the subject mark may be provided on the same side of the frame, and the sizes of both marks may be different to separate them. , you can also use the sous between frames as a mark.

FIG. 2 shows a portion of a microfilm reader printer equipped with a retrieval device of the present invention. (The reader section and copying device are not shown)
Reference numeral 5 indicates a supply magazine that stores the microfilm 1 shown in FIG. 11 is a light source provided on one side of the microfilm feeding path; 12 is a light source 11;
13 is a projection lens provided on the other side of the feeding path.

The microfilm 1 is sent out from the magazine 5 by the rotation of the rollers 6 and 7, passes through the projection position between the light source 11 and the projection lens 13, and is transferred to the take-up reel 1.
It is wound up to 0. Note that the reel shaft of the take-up reel 10 is coupled to a drive motor (not shown).

Information on the microfilm is illuminated by a light source 11 at a projection position, and is enlarged and projected onto a screen (not shown) by an optical system such as a projection lens 13.

Detectors 14 and 15 are arranged near the projection position and detect marks on the film, and are composed of photoelectric conversion elements that convert optical signals from the marks into electrical signals. The frame mark detector 14 detects the frame mark 3 and outputs a logic "1" detection signal when the frame mark is detected, and the subject mark detector 15 detects the subject mark 4 and outputs a detection signal of logic "1" when the subject mark is detected. Outputs a logic “1” detection signal.

16 is a film drive motor that rotates forward and reverse; 17;
18 is a synchronized belt and pulley that transmits the driving force of the drive motor 16 to the capstan roller 6; 19;
is a brake that stops the capstan roller 6,
Reference numeral 20 denotes a member 2 that supports the pinch roller 7 in order to bring the pinch roller 7 into elastic contact with the capstan roller 6.
This is a spring member connected to 1. The drive motor 16 is driven at at least two speeds, high speed and low speed, and rotates forward or reverse. The capstan roller 6 rotates to feed the film from inside the magazine 5 toward the take-up reel 10 (hereinafter referred to as the forward direction) by the forward rotation of the drive motor 16.
The reverse rotation of the reel causes the film to be rotated so as to return the film from the take-up reel to the magazine 5 (hereinafter referred to as the "reverse direction"). The brake 19 is normally inactive, allowing the capstan roller 6 to rotate freely, and is activated by a stop signal, which will be described later, to prevent the capstan roller 6 from rotating.
The rotation of the film is forcibly stopped to stop the film.

FIG. 3 shows the control circuit of the above-mentioned search device, in which 30 is an input key for inputting the case number of desired information to be searched, 31 is an input buffer (consisting of a register, for example) for receiving the input case number, and 32 is a search A start key instructs to start, 33 a first counter that adds or subtracts the detection signal from the frame mark detector 14, and 34 a second counter that adds or subtracts the detection signal from the subject mark detector 15. It is.

The counters 33 and 34 are switched to addition or subtraction depending on the direction in which the film 1 is fed. In this embodiment, a normal rotation signal to be described later causes an addition state, and a reverse rotation signal causes a subtraction state. In addition, in order to prevent erroneous searches that occur when the film feed direction is changed, when the film feed direction is changed, the frame mark and subject mark that are detected first after the change are not detected by the mark detectors 14 and 15. Configure.

Note that it may be configured such that a detection signal for the mark detected first after the change is generated, and the detection signal for the mark that appears first is invalidated so that the counter does not count. This method is known from JP-A-48-117550.

35 is a known subtraction circuit, and counters 33, 3
When the count content is sent from 4, it is stored in the minuend part or the subtrahend part, and subtraction is performed (minuend - subtrahend). If the subtraction result is zero, a logic "1" completion signal is output from terminal a. In other cases, a signal indicating the absolute value of the subtraction result is output from terminal b, and if the sign of the subtraction result is positive, a logic "1" signal is output from terminal C, and if it is negative, a signal indicating the absolute value of the subtraction result is output. A logic "1" signal is output from the terminal d. 36 indicates a third counter, which is connected from the terminal b to the subtraction circuit 35.
The result of subtraction is set, and when a signal is input from terminal e, it is subtracted and counted, and when a signal is input from terminal f, it is added and counted. 37 is a detection circuit that detects whether the content of the third counter has become "1" or "0"; when the content of the third counter has become "1", the signal from terminal When the matching signal is reached, a matching signal of logic "1" is outputted from the terminal h.

FF1, FF2, ... FF5 are flip-flops, A1, A2, ... A17 are AND gates, G
1, G2, . . . G9 are OR gates, 40 and 41 are delay circuits, and 42 is a differential circuit. Also, 38 is the fourth
Use the counter to count the number of frames included in the desired item. Reference numeral 39 is a display for displaying the count contents of the fourth counter.

Next, the search operation of the above device will be explained. Before searching, flip-flop FF1, FF3, FF4,
FF5 is in a reset state.

First, when the case number of the desired information is input into the input key 30, this case number is encoded, and the coded case number is sent to the input buffer 31. Next, when the start key 32 is operated to command a search start, flip-flop FF1 is set, AND gates A3 and A6 are opened, and as a result, input buffer 3 is opened.
Case number 1 passes through OR gate G2 to subtraction circuit 35
The counted contents of the second counter 34 (the item number of the information currently being projected on the screen) are transferred to the subtractive part of the subtraction circuit 35 via the OR gate G3. The subtraction circuit 35 executes subtraction by inputting both signals, and if the result is zero, outputs a completion signal from terminal a, and if not zero, sets the value of the subtraction result from terminal b to a total of three counters 36. At the same time, a signal is output from either terminal c or d depending on whether the value is positive or negative.

If the subtraction result is zero, it means that the desired information is located at the projection position, and flip-flop FF1 is reset by the search completion signal from terminal a, and film 1 is not fed. In other words, the contents of the second counter 34 and the case number of the target information match, and the desired information is retrieved, so there is no need to feed the film.

Now, if the subtraction result is not zero and the sign of the subtracted value is positive, the value of the subtraction circuit 35 is
The signal is then set in the third counter 36, and at the same time a signal is output from terminal c to set flip-flop FF2.

On the other hand, the logic "1" set output signal of the flip-flop FF1 is sent to the drive control circuit of the drive motor 16 as a high-speed feed signal through the signal line i and the OR gate G7, thereby driving the motor 16 at high speed. Also, when OR gate G7 opens, AND gate A7 opens via OR gate G8, and AND gate A7 opens.
A normal rotation signal of logic "1" is output from the output terminal.

This normal rotation signal is sent to the drive control circuit of the drive motor 16 to rotate the drive motor 16 in the normal direction. Therefore, in response to the search start command, the film 1 is fed in the forward direction at a high speed, and during feeding, the frame mark detector 14 outputs a detection signal, and this detection signal is added to the first counter 33 and counted. The target mark detector 15 also outputs a detection signal, and this detection signal is sent to the second counter 34.
is added to and counted. Also flipflop FF1
is set, and gate A1
is opened every time the mark mark detection signal is input, and the mark mark detection signal is subtracted and counted by the third counter 36 via the OR gate G1. In addition, and gate A2
is closed, the detection signal of the frame mark is blocked by the AND gate A2 and is not sent to the third counter 36. The third counter 36 sequentially subtracts the value set from the subtraction circuit 35 every time the detection signal of the subject mark is input, and when the value becomes "0", outputs a match signal from h of the 1/0 detection circuit. . That is, when the third counter 36 counts the detection signal of the subject mark corresponding to the desired information, the content of the third counter 36 becomes "0".
The match signal at terminal h opens AND gate A11,
Set flip-flop FF3, and set flip-flop FF3 to set flip-flop FF3.
1 is reset. On the other hand, flipflop
By setting FF3, AND gate A14 opens, a high speed feed signal is output from OR gate G7, and the film continues to be fed in the forward direction at high speed.

Further, when the AND gate A11 is opened, the AND gate A4 is opened, and as a result, the contents of the frame mark counter 33, which was counting the detection signal of the frame mark being fed, are transferred to the minuend part of the subtraction circuit 35. Therefore, the count contents of the frame mark counter 33 (corresponding to the frame number of the desired information) at the time when the coincidence signal is output from the terminal h of the 1/0 detector 37 are stored in the subtraction circuit 35.

Next, when the item mark detector 15 detects the item mark next to the desired item, the detection signal opens the AND gate A12, the flip-flop FF3 is reset, and the high-speed feed signal disappears. on the other hand,
The output signal of the AND gate A12 is sent to the brake 19 as a stop signal, and the brake is activated. As a result, the film, which was being fed at high speed, stops after overrunning from the time when the mark next to the desired mark is detected. Note that the amount of overrun varies depending on the film feeding speed, braking capacity, etc.

Further, the delay circuit 40 is activated by the output signal of the AND gate A12, and outputs a pulse signal after a set time has elapsed. The setting time of this delay circuit 40 corresponds to the time it takes for the film to completely stop, which is approximately 500ms.
~1s. Therefore, after detecting a desired mark and then detecting the next mark, the delay circuit 40 outputs a pulse signal. This pulse signal sets flip-flop FF4.

The logic "1" set output signal of the flip-flop FF4 is differentiated by a differentiating circuit 42, and this differentiated signal is added and counted by a third counter 36.

As a result, the count content of the third counter 36 changes from "0" to "1".

The set output signal of the flip-flop FF4 is sent to the AND gate A2 via the OR gate G6 and the signal line j, and is also sent to the drive control circuit of the drive motor 16 as a low-speed feed signal to drive the motor 16 at a low speed. Gate A10
is opened and an inversion signal of logic "1" is output from the AND gate A10. This reverse rotation signal is sent to the drive control circuit of the drive motor 16 to reverse the drive motor 16.
Therefore, after overrun, the film 1 is fed at a low speed in a direction opposite to the forward direction, that is, in the reverse direction.
During this reverse feeding, the AND gate A2 opens when a detection signal is input from the frame mark detector 14, and this detection signal is subtracted and counted by the third counter 36. Note that the first mark detected after reverse transport is not detected by the detectors 14 and 15 to prevent erroneous searches, as described above. During reverse transport, AND gate A1 is closed. During reverse transmission, when the first detection signal is sent to the third counter 36 via AND gate A2 and OR gate G1, this signal is subtracted and counted, and the count content becomes "0" again and a coincidence signal is output from terminal h again. . This coincidence signal opens AND gate A13, then AND gate A5, and the contents of first counter 33 are transferred to the subtraction section of subtraction circuit 35. This coincidence signal is also sent to the brake 19 as a stop signal to stop the film. That is, the film stops when the first detection signal of a frame mark is counted during reverse feeding.

When the contents of the first counter 33 are stored in the subtraction section, the subtraction circuit 35 executes subtraction and sends the result to terminal b.
It is then set in the third counter 36. Also, since the sign of the value is negative, a signal is output from the terminal d to reset the flip-flop FF2. The count contents of the first counter 33 stored in the subtractive part of the subtraction circuit 35 immediately before the overrun, and the count contents of the first counter 33 stored in the subtractive part when the detection signal first appeared from the detector during reverse feeding after the overrun. Comparing the count contents of the first counter 33, it is found that during the overrun, the first counter 3
3 adds and counts the number of detection signals corresponding to the number of frames that have gone too far, so the count stored in the subtraction section is larger, and as a result, the sign of the subtraction value becomes negative and a signal is output from terminal d. .

On the other hand, when the AND gate A13 is opened, the delay circuit 4
1 is activated, and a few microseconds after activation, a pulse is generated from this circuit, and this pulse is sent to the flip-flop.
Set FF5.

The logic "1" set output signal of flip-flop FF5 resets flip-flop FF4.

The set output signal of flip-flop FF5 is sent to AND gate A2 via OR gate G6 and signal line j, and is also sent as a low speed feed signal to the drive control circuit of drive motor 16 to drive the motor at low speed, and then via OR gate G8. AND gate A9 is opened and an inversion signal of logic "1" is output from AND gate 9. Therefore, after the reverse feed is stopped, the film 1 is fed again in the reverse direction at a low speed. Each time a frame mark detection signal is sent during reverse feeding, the AND gate A2 is opened, and the frame mark detection signal is subtracted and counted by the third counter 36.

The third counter 36 sequentially subtracts a preset value each time a detection signal is input, and when the value becomes "0", a match signal is outputted from the terminal h of the 1,0 detection circuit 37 again. That is, when the third counter 36 counts the detection signal of the comma mark at the beginning of the desired information, the content of the third counter becomes "0".

The match signal from terminal h is sent to AND gate A15 through signal k to open AND gate A15, and the logic "1" output signal of AND gate A15 resets flip-flop FF5 as a search end signal and operates brake 19. to stop the film. As a result, the search is completed, the desired information is correctly placed at the projection position, and the desired information can be observed on the screen at the same time as the search is completed.

Meanwhile, during the above-described search operation, the number of frames included in the desired item is counted as follows. That is, the detection signal of the matter mark corresponding to the desired matter is counted by the third counter 36, and its content becomes "0", and 1,
A match signal is output from the terminal h of the 0 detection circuit 37, and the AND gate A11 is opened and the flip-flop FF3 is opened.
When FF3 is set, AND gate A14 is opened by setting flip-flop FF3, and AND gate A17 is opened via OR gate G7. After detecting the desired mark, the film continues to be fed forward at a high speed, so the detection signal from the frame mark detector 14 passes through the AND gate A17, and passes through the OR gate G9. It is counted with 4 counters. Next, when the mark next to the desired mark is detected, the AND gate A12 opens and its output resets the flip-flop FF3, so the AND gate A17 is closed and the frame mark detection signal no longer enters the fourth counter. . As a result, the number of frames included in the desired item has been counted and stored in the fourth counter.

Next, when searching for information on a new item, the search can be performed in the same manner as described above by inputting the item number of the required information into the input key 30 after the previous search is completed. Also, it is possible to search whether the film is sent in the forward or reverse direction, but when you first send the film in the reverse direction and search, the number of frames included in the desired item is counted differently than when the film is sent in the forward direction. It will look like this:

When searching in reverse direction, when the item mark before the desired item is detected in this feeding direction, that is, when the content of the third counter becomes "1".
A match signal is output from terminal g of the 1.0 detection circuit, and AND gate A16 is opened. As described above, after detecting the mark of the desired information, the film continues to be sent in the same direction at high speed, so the detection signal from the frame mark detector 14 passes through the AND gate A16 and the OR gate G9. After that, it is counted by a fourth counter.

Next, when the subject mark of the desired information is detected, the AND gate A12 opens and the output resets the flip-flop FF3, so the AND gate A16 closes and the coma mark detection signal no longer enters the fourth counter.

The subsequent search operation is performed in the same manner as described above, the device searches for the desired information and stops, and the fourth counter counts and stores the number of frames included in the desired item.

The contents of the fourth counter are displayed on a known display 39 as the desired number of frames.

Further, the numerical value stored in the fourth counter is used in the following manner when a desired retrieved item is copied by a copying device.

In other words, the value counted by the fourth counter (number of frames)
Assuming that N is N, if the film is fed for (N-1) frames in a direction in which the last frame of this information approaches the projection position (in this embodiment, it is fed in the forward direction), the last frame of the desired item will be The frame is placed at the projection position (corresponding to the exposure position of the copying device). Then, the copying operation starts from this last frame, and when the copying of the last frame is completed, the next frame is sent to the projection position.
Thereafter, by repeating the copying operation and frame-by-frame feeding operation one frame at a time, and repeating the copying operation N times, a copy of the desired information can be automatically obtained, and this copy is aligned in page order. Since the details of the copying operation are well known, their explanation will be omitted.

As described above, since the present invention can automatically know the number of information included in a desired item, this number can be used to automatically copy a desired information group or input the address number of the information. Selected information in an information group can be found without having to do anything, thereby shortening the copying time, automating the copying operation, and simplifying the operation.

[Brief explanation of the drawing]

Figure 1 shows one of the microfilms used in the present invention.
FIG. 2 is a front view showing an example, FIG. 2 is a perspective view of essential parts showing one embodiment of a search device to which the present invention is applied, and FIG. 3 is a control circuit diagram. 14... Frame mark detector, 15... Mark detector, 16... Drive motor, 33, 34, 36, 37
...Counter, 35...Subtraction circuit.

Claims (1)

[Claims] 1 Search for the information of the desired item on the information recording medium on which a frame mark is attached corresponding to each piece of information and an item mark is attached corresponding to the first information of the information group of the item whose information content is related; A search copying apparatus for copying retrieved information includes a subject mark detection means for detecting subject marks, a frame mark detection means for detecting frame marks, a feeding means for feeding an information recording medium, and a subject mark detection means. After detecting the item mark of a desired item, the information recording medium is fed in a direction in which the next item mark after the desired item can be detected, and during this feeding, the frame marks detected by the frame mark detection means are counted, An information retrieval copying apparatus characterized by comprising means for storing the number of frame marks counted until the mark detecting means detects the next item mark as the number of information included in the desired item.