JPS5856070A - Information retrieval device - Google Patents

Abstract

PURPOSE:To give a warning of erroneous retrieval of a microfilm and to obtain improved operability by detecting the end mark of the microfilm and then inhibiting the movement of the film in its advance direction until the film is rewound and a frame mark counted by two from the end. CONSTITUTION:Frame marks MK added to a microfilm 1 corresponding to respective information frames K are detected by a frame mark detector, whose output signal is applied to a mark preprocessing circuit 95 through sensors A1- A3, and B1-B3. Various signals obtained through the preprocessing of the circuit 95 are applied to a retrieval control circuit 90 to retrieve a desired information frame. An end mark ME near the end of the film 1, when detected, is stored in the storage means of the circuit 90, and when the 2nd frame mark MK2 from the end is detected by moving the film 1 backward, the mark ME in the circuit 90 is erased. If the film 1 is advanced before the mark MK2 is detected by the malfunction deciding means of the circuit 90, a buzzer 97 gives a warning of malfunction, thus facilitating the operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information retrieval device such as a reader printer that searches for a desired information frame by detecting frame marks attached to each information frame on a microfilm.

For example, a negative or positive microfilm as shown in FIG. 1 is used in such an information retrieval device.

This microfilm 1 has a starting end leader tape 1a that is hooked to a take-up reel (not shown) and a trailing end leader tape 1b that is hooked to a reel in the cartridge. A mark Ms (which becomes a reset mark when returning) and an end mark Mg are attached.

A large number of information frames K, in which information is photographed and recorded at regular intervals, are arranged on the film 1 between the two marks, and a corresponding frame mark MK is attached to each information frame, and information for one item is recorded. A group of information pieces (generally.

It consists of multiple pieces, but one piece may contain information for one item.)
A matter mark Mc is attached corresponding to the first piece of KG.

Then, the information retrieval device detects the frame mark MK and the subject mark Me of this microfilm 1, and performs a frame search (search for each frame) and a case search (search for each group of information frames for one case).
It is now possible to do this.

In other words, send the information arm K by 1 frame + 1 frame key, move back 1 frame by the 11 frame key, send the information frame group KG by 1 piece + 1 item key, move back by 1 item the 11 item key, the piece number or item you want to automatically search for. Numeric keypad for entering numbers.

Equipped with a search key to start an automatic search, a switch to switch between piece search and item search, a counter and a display to display the count value, etc. In the piece search mode, the counter changes to the piece mark M.
K is counted and the piece number is displayed on the display, and in case search mode, the color/riga case mark Me is counted and the piece number is displayed on the display.

In either mode, you can forward and return one frame, and forward and return one item. In addition, you can automatically search by setting the piece number in the piece search mode or the item number in the item search mode with the numeric keypad in advance. It is now possible to do so.

Further, when the microfilm 1 is fed to near the end, an end mark ME is detected, and the feeding drive of the microfilm is thereby stopped.

In this state, even if the operation means for moving the microfilm in the feeding direction (+1 frame key, +1 item key, search key after entering a number larger than the counter value at that time) is operated, no further operation is performed. This is an erroneous operation since the microfilm cannot be sent, but with conventional information retrieval devices, even if the +1 frame key or the +1 item key was operated in such a case, the microfilm would not move.

Therefore, the operator may not notice the erroneous operation and end up wasting time and money.

Further, after the end mark is detected and the microfilm is stopped, operation means (-1 frame key, -1 item key) are used to move the microfilm in the return direction.

After setting a number smaller than the count value of the counter at that time, operate the search key to return the film, and by detecting the last frame mark MKI shown in Fig. 1 or by operating the stop key, If the microfilm is stopped at , the last information arm KE is being searched or is in a state before being searched.

Therefore, there is no need to move the microfilm in the feeding direction again from that state, but in conventional information retrieval devices of this type, the microfilm is moved in the feeding direction while it is stopped in the range a in Figure 1. When I operated the moving operation means, the microfilm moved in the feeding direction.

Therefore, time may be wasted on unnecessary operations.

This invention was made to solve the above-mentioned problem. After the end mark ME is detected, the microfilm is returned and the second frame mark MK2 from the end is detected.
Even if the operation means for moving the microfilm in the feeding direction is operated, the microfilm will not be moved until the operation means that moves the microfilm in the feeding direction is detected, and a warning will be issued to notify the operator that the operation has been erroneous, thereby improving operability. The purpose is to

Therefore, the information retrieval device according to the present invention includes a storage means for storing the end mark Mg provided near the end of the microfilm when it is detected, and a storage means for storing the end mark Mg provided near the end of the microfilm, and a storage means for storing the end mark Mg provided near the end of the microfilm, and a storage means for storing the end mark Mg provided near the end of the microfilm. a memory erasing means for erasing the memory in the memory means when an end mark is detected; and an operation means for moving the microfilm in the feeding direction while the memory means stores detection of the end mark, outputting an erroneous operation signal when the operation means is operated. The above-mentioned object is achieved by providing an erroneous operation determining means that does not move the microfilm, and an erroneous operation warning means that issues a warning based on the erroneous operation signal.

Hereinafter, the present invention will be described in detail with reference to FIG. 2 and subsequent figures of the accompanying drawings.

FIG. 2 shows the external appearance of the main body of the reader printer which is an information retrieval device embodying the present invention, in which 2 is a screen, 3 is a film drive unit for searching microfilm, 4 is an operation panel, and 5 is a copy receiver.

The operation panel 4 is provided with various switches, keys, dials, lamps, etc., as shown in FIG.

7 is a power switch that turns on and off the power of the entire machine, 8 is a print switch that performs copying operations, 9 is a paper end lamp that lights up when the photosensitive paper runs out, and 10.11 displays the copy size. 12 is a toner lamp that lights up when toner runs out, and 16 is a solvent lamp that lights up when solvent runs out.

14 is the +1 frame key to advance the microfilm frame by one frame, 15 is the 11 frame key to go back one frame, 16 is the search key to issue a search command signal to search by film number, and 17 is the film number key. Stop key for stopping movement and copying operations, 18 is numeric display 27
It is a clear key that clears the numbers displayed on the screen.

Reference numeral 19 indicates a preset key for setting a number entered in a register using the numeric keypad 20 to the frame or color of the internal RAM of the microcomputer, which will be described later. Reference numeral 21 indicates a rewind key for rewinding the film. Reference numeral 22 indicates a film. +1 item key to send 1 item, 26 is 11 item key to return 1 item, 26 is 11 item key to return 1 item, 24
is the manual dial for manually advancing and reversing the film.

25 is a copy density dial for adjusting the density of copies, 2
6 is the copy number dial for setting the number of copies (this dial does not work when copying items), 27 is a numeric display consisting of a 4-digit 7-segment LED, and 28 is used when switching from piece search mode to item search mode. 29 is a copy switch, which is turned on to turn on the print switch 8 when copying a copy.

- Next, the mechanism for projecting film and making copies by this reader printer will be explained with reference to FIG.

The information frame of the microfilm 1 held down by the pressure plate 62 on the film guide 61 is irradiated with light from the lamp 64 that passes through the condenser lens 65, passes through the projection lens 36, is reflected on the first mirror 67, and is reflected on the second mirror. 6
8 onto the screen 2. This is the state in which a normal microfilm 1 is inserted and is being projected.

Now, if the print switch 8 in FIG. 6 is pressed, the drive motor (not shown) of the photosensitive paper conveyance system starts to rotate, the mirror clutch 41 is turned on, the mirror cam 42 rotates, and the second mirror , 38 to the position shown by the virtual line. After moving, Mirror Clara +41 is turned off. During this time, the rolled photosensitive paper 40 is started, cut into a certain length by a cutter 46, charged by a charging section 44, and reaches an exposure surface 46 by a vacuum belt 45.

Furthermore, when the print switch 8 is pressed, the lamp 64 that was irradiating the microfilm 1 at this point is turned off. Then, when the photosensitive paper 40 reaches the exposure surface 46, it is temporarily stopped, and the lamp 64 is turned on again to perform static exposure.

When the exposure for a certain period of time is completed, the lamp 64 is turned off, and the photosensitive paper 40 moves again toward the developing section 47. The photosensitive paper 40 that has entered the developing section 47 is developed with a developer, dried in a drying section 48, and then conveyed to the copy receiver 5. Also,
When the exposure is completed, the mirror clutch 41 is turned on, and the second mirror 38 also returns to its original position.

Note that 49 is a reflecting plate that reflects the light emitted by the lamp 34 toward the condenser lens 35.

Next, the film drive unit will be explained with reference to FIG.

A microfilm 1 is stored in a roll 51 within a cassette 50. Set the cassette 50, press the aforementioned search key 16, +1 piece key 14° +1 item key 22. p1 by operating the feed direction of the manual dial 24.
The solenoid 52 is turned on, the thread roller 56 moves toward the film surface, and at the same time the drive motor 54 rotates.

The drive motor 54 rotates at low and medium speeds.

There are three speed levels. A detailed explanation of this speed will be given later.

In the above case, the film is fed at medium speed. Film 1 scraped out from inside the cassette 50 by the thread roller 56
enters between the drive roller 55 and the press roller 56.

When the film 1 is caught between the rollers 55 and 56, a capstan switch (hereinafter referred to as "CAP switch") 57 is turned on.

When the CAP switch 57 is turned on, the p solenoid 52 is turned off, and the film feeding force is applied from the drive blow 255. Then, the film 1 passes through the film gate 58 and is wound around the reel 59. 60 is a film holding arm.

Then, when the start mark is read by the mark detector described later, it will move from medium to high speed (search key when searching for pieces after the 20th frame) or low speed (+1 piece key, +1 item key, pieces within 19 pieces). (search key when searching). Thereafter, when the mark detector detects a predetermined mark, the advance of the film 1 is stopped, and the lamp 64 is turned on to project the stopped frame.

The mark detection section is constructed as shown in FIG.

Then, the microfilm 1 is illuminated by the light of the lamp 64.
The piece mark MK and the piece mark Me are mirror 61.62
It is reflected by the lens 63.64, magnified (doubled) by the lens 65.66, and reaches the piece mark detector 67 and the piece mark detector 68. The information on that piece is
It passes through a projection lens 66 and is projected onto the screen 2 in FIG.

As shown in FIG. 7, the piece mark detector 67 is a sensor Ar.
, A2, Bl, and B2, and the mark detector 68 includes sensors Aa and Ba. Each cell is specifically a photodiode.

The piece mark detector 67 also serves as a start mark detector and an end mark detector, and its cells At and Bl generate a piece mark signal for counting piece marks, and the sensor A
2. A start mark signal, an end mark signal, and a reset mark signal (when the microfilm is fed in the return direction and a start mark is detected) are generated by B2, At, and Bl. Sensor A3 of the target mark detector 68. B3 produces an issue mark signal.

Note that the microfilm 1 shown in FIG. 1 is used.

FIG. 8 shows a film drive circuit and its input and output signals. The direction is controlled, and the on/off of the solenoid 52 is controlled and sent.

Table 1 shows the relationship between the input signal of the film drive circuit 70 and the film advancing direction and speed.

Table 1 Each input signal in FIG. 8 and the above Table 1 is as follows. Note that the film was not fed under the conditions marked * in Table 1.

GO: High speed signal MID: Medium speed signal DOWN:
Low speed signal REW: Return signal MSTP: Signal to stop the motor when using manual dial CAPSW: CAP switch 570 on/off signal.
It turns on when the film is wedged between the drive roller 55 and press roller 56 in FIG.

MDS: A signal that changes the rotational speed of the motor 54 according to the position of the manual dial when it is moved.

On the other hand, the direction signal DS in the output signal is "1" in the forward direction and "0" in the return direction.

Figure 9 shows the print control circuit.

When the print switch 8 shown in FIG. 6 is turned on by this print control circuit 80, the motor 81 (M2) for transporting the photosensitive paper is started, and the various parts shown in FIG. A copy of the information piece is made and discharged to the copy receiver 5.

The mirror clutch OFF signal, lamp ON signal, and reprint signal are signals that are input from the search control circuit shown in FIG. , is input instead of operating the print switch to make a copy of the next frame.

FIG. 10 is a diagram showing the relationship between the search control circuit and its input/output signals in this embodiment.

The search control circuit 90 includes a central processing unit (CPU), a ROM as a program memory, and an R as a data memory including counters, registers, etc.
A one-chip microcomputer with AM etc. is used.

In the input system, on/off signals from each operation key or switch of the operation panel 4 shown in FIG. 3 are input. Note that the manual switch 91 is a switch that is turned on when the manual dial 24 shown in FIG. 3 is rotated.

The ninth frame switch 92 is a switch inside the machine, and is a frame number selection switch that changes the film speed from high speed to low speed during retrieval. When the 9th frame switch 92 is +7, the search control circuit 90 switches to low speed 19 frames before, and when it is on, it switches to low speed 9 frames before.

However, even if this 9th frame switch 92 is off, when the item search switch 28 is on, the switch is set before the 9th frame.
Signals from both switches are inputted via an R gate 93.

In addition, the film drive circuit 7o in FIG.
A switch on/off signal is input.

Furthermore, from the print control circuit 80 in FIG.
A paper stop signal PST, which is output when the photosensitive paper stops on the exposure surface, and a print signal P, which is output when the print switch is turned on, are input.

However, the print signal P is inputted via an AND gate 94 that performs AND with the output of the copy switch 29 so that it is input only when the copy switch 29 is on.

Also, the sensors Al, Bl, A2 . B2 and mark detector 68
The output signals of the sensors Aa and Ba are respectively input to the mark preprocessing circuit 95 to discriminate each mark, and the start mark signal, end mark signal, and reset mark signal (start mark signal when the microfilm is sent in the return direction) are input to the mark preprocessing circuit 95 to discriminate each mark. detection signal), piece mark signal.

and a search control circuit 90 by outputting an item mark signal.
Enter.

The positive switch 96 is a switch that is turned on when the loaded microfilm is positive and turned off when it is negative.

As for the output system, each film drive related output to the film drive circuit 70 in FIG. 8 is MID (medium speed), GO (high speed), and DOWN (low speed).

It outputs signals REW (return L) and MSTP (7'=motor stop during full operation).

Also, a mirror clutch OFF signal and a lamp ON signal are sent to the print control circuit 80 in FIG.

Outputs a reprint signal.

If the operator makes an erroneous operation, an erroneous operation signal 5Ml5S is output and the buzzer 97 sounds to warn the operator.

In addition, in the piece search mode, piece number data is output, and in the item search mode, item number data (counted value by a counter in RAM or value entered in a register by a numeric keypad) is output, decoded by a decoder 98, and displayed on a 7-segment LED.
It is displayed on the four-digit number display 27. In this case, each digit of the numeric display 27 is sequentially and dynamically displayed by the switching signal Sc.

Next, during the operation of the search control circuit shown in FIG.
This will be explained with reference to the operational flowchart shown in the figure.

FIG. 11 shows an outline of the main routine, which starts from the start when the power switch 7 in FIG. 6 is turned on.

First, it is checked whether the item search switch 28 is on, and if it is NO, it is the piece search mode, so the counter is operated as a piece counter.

If YES, it is the case search mode, so 1, color/ri is operated as a case counter.

Next, check whether the numeric keypad 20 is on, and press Y.
If it is S, the program jumps to the arranging routine and sequentially sets the values in the registers.

If the numeric keypad 20 is not operated, then search key 16. +1 piece key 14. -1 piece key 15° 11 items key 2
2 Check the z' keys 26 in sequence, and if any is operated and turned on, the search routine, +1 piece routine, -1 piece routine,
Proceed to either +1 item routine or -1 item routine,
When the +1 frame key, +1 item key, and search key (however, when the value R set in the register is larger than the counted value C of the counter), which are the operating means for moving the photo film in the feeding direction, are operated, Each +1 piece routine after passing through the mistake check routine according to the present invention.

+1 case routine, proceed to search routine.

Nao, manual routine, rewind routine.

The copy routine and the like are not shown in the figure.

Note that one of the flip-flop circuits (F/F) in the RAM of the search control circuit 90 is used as a storage means (hereinafter referred to as [ENI] F/F) that stores the end mark when it is detected.
Another one is assigned as a memory erasing means (hereinafter referred to as rE) for erasing the memory of this ENDF/F.
DMK F/F'J).

This 'FJNDF/F is the +1 frame routine in FIG.

+1 routine and search routine (when R>C)
In this process, an end set process as shown in FIG. 12 is performed, and when an end mark is detected, it is set and the output signal becomes 91''.

In addition, 11 is an operating means for returning the microfilm.
When the piece key, -1 item key, or search key when R<C is operated, the end reset process shown in Figure 13 is performed in the 11 piece routine, -1 item routine, and search routine in Figure 11. will be carried out.

That is, first, it is checked whether or not a piece mark has been detected, and if it has not been detected, the process returns, and if it has been detected, it is then checked whether ENDF/F is set.

If ENDF/F is not set, the process returns; if it is set, the detection of the end mark is stored, so next it is checked whether EDMKF/F is set.

If EDMKF/F'' is not set, the last piece mark MKI is detected, so set it and set it to C-1. If it is set, the second piece mark M from the last piece is set.
K2 (see Figure 1) was detected, so ENDF/F
Reset (set to ゝゝO“ to erase the memory and EDM
K F/F is also reset and returns.

In addition, after the return, the search routine of Fig. 1, -1
Piece Routine t Process one of the pieces in the routine and return to the start.

In this way, when the end mark is detected during film advance direction, ENDF/F is set, and when the first frame mark is detected during film return motion, EDMK F/F is set. , ENDF/F is reset when the next piece mark (second from the end) is detected, and from then on, even if a piece mark is detected, the END F/F has already been reset, so it remains in the reset state. Become.

Then, in the miss check routine, as shown in FIG. 14, it is checked whether or not this END F/F is set. If it is not set, the routine returns to the main routine and the search routine is executed.

Proceed to +1 piece routine or +1 case routine.

If the END F/F is set (if it is 1), it is determined that the operation has been erroneous, and the process proceeds to a process for outputting the erroneous operation signal SMtss and sounding the buzzer 97 in FIG. 10 for a certain period of time to issue a warning. Since the process does not proceed to the search routine, +1 frame routine, or +1 item routine, the microfilm is not moved.

This discrimination function in the search control circuit 90 is compatible with the erroneous operation discrimination means of the present invention.

First, set and start the internal timer,
Turn on the buzzer 97 in FIG. Thereafter, the buzzer continues to sound until the timer expires, at which time the buzzer is turned off and the process returns to the start of the main routine in FIG.

In this way, when the end mark is detected while the microfilm is being fed, the END F/F is set and memorized, and the microfilm is returned and the end mark is detected when the second frame mark from the end is detected. If the operating means for moving the microfilm in the feeding direction is operated before the memory is erased, the microfilm does not move and the buzzer sounds, so the operator immediately notices the erroneous operation. Appropriate action can be taken.

Note that the erroneous operation warning means is not limited to a buzzer, but may also be a visual warning means such as a lamp or letters or figures, or an audio warning means using a voice synthesizer or the like.

As described above in the embodiments, if the information retrieval device according to the present invention is used, the microfilm is fed to near the end and the end mark is detected, and then the microfilm is returned to the second from the end. If you enter a number larger than the current counter count value and operate the search key, or operate the +1 piece key or +1 item key before a piece mark is detected, the microfilm will not move and an erroneous operation warning will be issued. Since this is emitted, the operator can immediately notice it and perform appropriate operations, improving operability and reducing wasted time.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of a microfilm used in an information retrieval device to which the present invention is applied. Fig. 2 is a perspective view showing the external appearance of the reader printer main body which is an embodiment of the present invention, Fig. 6 is a plan view of its operation knobs, and Fig. 4 is the same for film projection and copying. FIG. 5 is a block diagram showing the mechanism for the P-film drive unit, FIG. 6 is a block diagram of the mark detection section, and FIG. 7 is the frame mark detector in FIG. 6. An explanatory diagram showing the correspondence of the subject mark detector to the frame mark and the subject mark on the microfilm, Figure 8 is an explanatory diagram showing the relationship between the film drive circuit and its input/output signals, and Figure 9 is the print control. 10 is an explanatory diagram showing the relationship between a search control circuit and its input/output signals; FIGS. 11 to 14 are the search control circuit in FIG. 10; FIG. 2 is an operation flow diagram for explaining operations related to the present invention. 1... Microfilm K... Information piece MK...
・Piece mark Me...piece mark Ms...
Start mark ME...End mark 2...Screen 6...Film drive unit 4...Operation panel 5...Copy reception care...Power switch 8...Print switch 14...+1 frame key 15...-1 piece key 16...Search key 17...Stop key 18...Clear key
19...Preset key 20...Numeric keypad
21...Rewind key 22...+1 item key
26...-1 item key 24, 2, manual dial 27... Number display 67... Piece mark detector (also serves as end mark detector) 68... Item mark detector 70... Film Drive circuit 80... Print control circuit 90... Search control circuit (including storage means, memory erasing means, and erroneous operation determination means) 97... Buzzer (erroneous operation warning means) Fig. 5 Fig. 6 Fig. 8 Figure 9 R ("I-3187 Figure 12 Figure 14 Procedural Amendment (Voluntary) October 1, 1980 Haruki Shimada, Commissioner of the Patent Office, Mr. 2, Invention Name Information Search Device 3, Person Who Makes Amendment Case) Relationship between: Patent applicant 1-3-6 Nakamagome, Ota-ku, Tokyo (67A) Ricoh Co., Ltd. 4, agent 5-5, 1-20 Higashiikebukuro, Toshima-ku, Tokyo, subject of amendment Drawing 6, Amendment Content

Claims (1)

[Scope of Claims] 1. An information retrieval device that searches for a desired information frame by detecting a frame mark attached to each information frame of a microfilm, comprising: an end mark provided near the end of the microfilm; a memory means for storing information when the microfilm is detected; a memory erasing means for erasing the memory of the memory means when the second frame mark from the end is detected after the microfilm is returned; erroneous operation determination means that outputs an erroneous operation signal and does not move the microfilm when the operation means for moving the microfilm in the feed direction is operated while memorizing the end mark detection;
An information retrieval device comprising: an erroneous operation warning means for issuing a warning when the erroneous operation determining means outputs an erroneous operation signal.