JPS60186965A - Information retrieving device - Google Patents

Abstract

PURPOSE:To retrieve information from various types of recording media without replacing a mark detecting device by classifying count signals by combinations of output signals of plural photosensors and counting count signals by the classifications. CONSTITUTION:When plural information recording media on which retrieval marks classified by pieces of information are recorded in different recording modes are used selectively, plural photosensors 25-29 which detect the retrieval marks of the information recording media and a mode selection switch 120 for switching to the retrieval mode corresponding to an information recording medium to be used are provided. Then, a signal generating means which generates count signals consists of AND gates 111-114 classified corresponding to classifications of the retrieval marks with output signals of the photosensors and a signal from the mode selection switch 120. Further, count signals outputted by the signal generating means are counted by the classifications and a specific retrieval mode is set when the power source is turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is a book about a search device that automatically searches for desired information on an information recording medium such as film or tape by counting marks on the recording medium.

Conventionally, on the film used in search devices built into microfilm readers, counting marks are provided 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,
When moving the film, a mark detector with a photoelectric conversion element detects the luminous flux from the mark, the output signal of the mark detector is counted by a counter, and the count contents of this counter are inputted from an input device (keyboard). The comparison circuit compares the desired frame number with the desired frame number, and when the two match, the comparison circuit issues a stop signal to the drive control circuit, stopping the drive system that transports the film and projecting the information of the desired frame on the screen. It is designed to remain stationary at a predetermined position.

The types of films used in such search devices are those that have 111Il marks of the same size for each piece of information, and those that classify a large amount of information on the film into several items. There are films with different mark sizes or mark recording positions. When searching for desired information on a film that has multiple types of classified marks, enter the search number (
You can search for this information by entering the address number). For example, when searching using a film that has a small mark of a small size corresponding to information classified as a small item, and a medium mark of a larger size than the small mark corresponding to information classified as a medium item. By inputting the search number of the medium item and the search number of the small item of the desired information, it is possible to search for information classified into the desired medium item and small item. Note that by inputting only the search number of the middle item, it is possible to search for information classified into the desired middle item.

As mentioned above, there are various types of films used in search devices that have different search mark types and recording modes, that is, different types of films that have different mark sizes and mark recording positions depending on the information content. Conventionally, when searching using these films, the mark detection device had to be replaced depending on the type of film, but this was expensive as many mark detection devices were required, and the mark detection was expensive. There have been problems such as selecting the wrong detection device or damaging the mark detection device when replacing it.

The invention has been made in view of the above circumstances, and therefore provides an information retrieval device capable of searching for information on desired classification items using various types of recording media without replacing the mark detection device. The purpose is to

The invention will be explained below with reference to the drawings. FIG. 1 shows an example of a film used in the invention.On the side of a frame f on which film F1 information is recorded, there is one type of frame mark m1 whose density differs from the surrounding area corresponding to each frame. This frame mark m1 is used to search for information classified into small items for each frame. The film F2 has a frame mark m21 for each frame on one side of the frame f, and a subject mark mztt for each selected frame on the other side of the frame f. The frame mark m21 is classified into small items to search for t information, and the subject mark m22 is 4 to search for information classified into medium items.

For example, when recording automobile parts drawings etc. on film, the structure of the automobile is classified into several units, and a subject mark m22 indicating the middle item is recorded on the side of the frame in which the exploded diagram of each unit is recorded, and the unit The component parts diagram, part number, price, etc. of this unit are recorded in the frame next to the frame in which the exploded view of this unit is recorded, and a frame mark M21 indicating a small item is placed on the side of each frame in which this parts diagram is recorded. When using this film, if the frame mark m2zt is detected, the frame recording the disassembly of the desired unit can be searched for, and if the frame mark m21 is detected, the desired part diagram of the desired unit can be searched. You can search for frames with information such as , part number, price, etc. By the way, film? In 2, the frame with the subject mark "12" also has the frame mark m21.
However, the frame mark m21 may not be provided in the frame provided with the subject mark m2t.

Film F5 has information recorded in two rows in the longitudinal direction of the film, with a frame mark m3 recorded on the bottom of each frame in the first row, and on the top of each frame in the second row. has been done. A frame mark 11141 and an issue mark m42 are recorded on one side edge of the film IF frame. The subject mark 1142 is placed on the side of a frame that is classified as a medium item and records friend information, and the frame mark m4t is placed on the side of a frame that records information that is classified as a small item. It has a different shape from the frame mark "41" and is longer in the longitudinal direction of the film than the frame mark M41. It is recorded on the side of the frame, and the first frame is classified as a medium item and mourning information is recorded, and the remaining frames are recorded with information classified as a small item. Become.

FIG. 2 shows a microfilm reader equipped with a retrieval device to which the invention is applied.

In the figure, 1 is a supply reel wrapped with microfilm, 2 and 3 are guide rows 2.4 are lamps that illuminate the microfilm, 5 is a condensing lens, and 6 and 7 are sandwiching film movement paths. 8 is a capstan roller, 9 is a pinch roller, and 10#i take-up reel.

The supply reel 1 and take-up reel 10 are connected to a film tensioning and winding motor, and the capstan roller 8 is connected to a forward/reverse film feeding motor. Microfilm? , is between supply reel 1 and take-up reel 10! lJ) and is wound onto a take-up reel or rewound onto a supply reel by driving the capstan row 28.

11 is a mark detection device, 12 is a projection lens, and 15 is a screen. The microfilm is illuminated by the lamp 4 between the glass plates 6 and 70, and the illuminated image of the film is imaged onto the screen 13 by the projection lens 12.

Figure 3 shows a mark detection device, in which the mark detection device 11#'i includes a plurality of photosensors 25, 26, 27.
．． The t% photosensors 25, 26, and 27 are arranged at positions to detect the marks provided in the first row (lower part) of the film, and the second group of photosensors 2B・No. 29 is placed at a position to detect the mark provided on the second row (top) of the film.

The photosensors 25, 26, and 27 are arranged in a line at predetermined intervals in the direction of film movement, and output a mark detection signal when the light from the lamp 4 is blocked by the first row of opaque marks on the film. Photo sensor 28・
They are arranged at a predetermined distance in the direction of movement of the 29Fi film, and output a mark detection signal when the light from the second amplifier 4 is blocked by the second row of opaque marks on the film.

1st group photosensor 25, 26, 27q open bottom 29'
is held by a block 51 provided on a substrate 50 having
The second group of photosensors 28 and 29 are held by a block 32 provided on the substrate 50.

Each of the blocks 31 and 32 is swingably provided on the substrate 30iC, and by moving the blocks 31 and 32, the position of the papermaking photo sensor can be adjusted. Each photo sensor is connected to a search control circuit, which will be described later, by an electrical cord.

A photosensor outputs an electric pulse signal by intermittent incident light from a phototransistor, photodiode, or the like.

In the above embodiment, the light flux from the mark is directly received by the photosensor, but the light flux from the mark may be received by the photosensor via optical means such as an optical fiber.

Figure 4 shows the four types of films shown in Figure 1? .

This shows the arrangement of each photosensor when searching using ~y4, and the spacing between photosensors 25 and 27 is the mark m1 of film IF, the mark m21 of film 2, the mark ms of film 1, and film? The distance between the photosensors 26 and 27 is narrower than the length of the mark m42 of the film IP4 in the film movement direction.

FIG. 5 shows a search control circuit, with amplifiers 101-105, inverters 106-110, and inverters 111-114.
115 is an AND gate, 115 is an OR gate, and 120 is a mode selection switch. The mode selection switch 120 is switched to any one of contacts a to d depending on the film used, and when using film 1!1, contact a (position shown) is used, and when using film F2, contact bK1 film is used. When using IPs, it is connected to contact C, when using film r4, it is connected to contact d, and selection switch 12G is connected.
By switching, the search mode corresponding to the extracted film is set.

The structure is such that when light incident on the photosensor is quickly cut off by the mark, a high-level signal is output from an amplifier connected to the photosensor. For example %@4
When the odometer 26 and the mark m1 overlap (in Al), the light incident on the photosensor 26 is blocked and a high level signal is output from the amplifier 102. At this time, since the photosensors 26 and 27 do not overlap with the mark m1, light enters them, and low-level signals are output from the amplifiers 101 and 103.

Next, the operation of the above device will be explained. First, when searching for information using film F1, select switch 1
20 to contact a. When the frame number of the desired information to be searched is inputted, a search start is commanded, and the film V1 is fed, the relative positional relationship between the frame mark m1 on the film F1 and the photosensors 25, 26, and 27 becomes figure(
When the state of Al is reached, that is, the photo sensor 26
AND gate 11 when only detects the frame mark m1
1 opens, and the AND gate 111 outputs the first frame mark count signal classified into small items.

This frame mark count signal is counted by an fJ1 frame mark counter (not shown). The desired information is retrieved by comparing the contents of the first frame mark counter with the input frame number and stopping the film when the two match. AND gates 112 to 114 when using film F1
won't open.

Next, when using film IP2, select switch 12
Connect 0 to contact S. After inputting the frame number or item number of the desired information to be searched, commanding the start of the search and feeding the film F2, the frame mark on the film F2 will be displayed.
21 and the photosensors 25, 26, and 27 are in the state shown in FIG.
is opened and the first co-mark count signal classified into small items is output. At the same time, the relative positional relationship between the mark m21 on the film F2 and the photosensors 28 and 29 is shown in Figure 4 (B
1, that is, only the photosensor 26 detects the frame mark m21, and the photosensor 2
AND gate 1 when only 9 detects issue mark m22
15 is opened, and an item mark count signal classified into medium items is output from the anime game) 115. The first frame mark count signal is counted by the first frame mark counter, and the subject mark count signal is counted by the subject mark counter. Since the subsequent search operation is well known, the explanation will be omitted.

Film next? , when using the selection switch 120
Connect to contact C. After inputting the frame number of the desired information and instructing to start searching, when the film F3 is fed, the frame mark m5 in the first row on the film F5 and the photo sensor 25
・When the relative positional relationship with 26 and 27 and the relative positional relationship between the second column frame mark m5 and the photosensors 28 and 29 are simultaneously in the state shown in FIG. 4(C)
11 and 114 open, the first frame mark count signal classified into small items from the AND gate 111, and the AND gate 11
The second frame mark count signals classified into small items from 4 are output respectively. The first frame mark count signal is counted by the first frame mark counter, and is counted by the second frame mark counter M2 frame mark counter Fi.

In addition, when using film F4, select switch 12
Connect 0 to contact d. After inputting the frame number or item number of the desired information and instructing the start of the search and feeding the film F4, the relative positional relationship between the frame mark m41 on the film F4 and the photosensors 25, 26, and 27 is shown in FIG. D)
When the state is reached, that is, when only the photo sensor 26 detects the frame mark l114t, the AND gate 1 is activated.
11 opens and outputs the first frame mark stitch number signal. Further, when the relative positional relationship between the subject mark 42 and the photosensors 2B and 29 becomes DK as shown in FIG. 4(D), that is, when the photosensors 26 and 27 simultaneously detect the subject mark m42, the AND gate 112 opens The AND gate 112 outputs a mark count signal classified into medium items, and each signal is counted by a counter for each classification. Therefore, classified counting signals can be obtained from the combination K of the output signals of a plurality of photosensors, and by counting these classified counting signals with a counter for each classification, the classified information can be automatically calculated. You can search for it.

FIG. 6 shows another embodiment of the search control circuit, in which various controls are performed by a microcomputer. In the same figure, 20 ports are microcomputers, 201-
205 I10 ports, 210 is an input key for inputting the search number etc. of desired information, 1211 is a self-recovery changeover switch for selecting the type of film, 212 is a display drive circuit, D1
~D4 are indicators, and 81~S4 are initial mode setting switches. The changeover switch 211 is the selection switch 1 in FIG.
20, and by selecting the number of presses depending on the type of film used, the search mode corresponding to the type of film used is set.

Now, when you turn on the power switch, the film? .

When the search mode is set to use film IP2, pressing the selector switch 211 once will set the search mode to use film IP2, and pressing it once again will set the search mode to use film IP3. If the switch 211 is pressed once, the search mode is set to use film P4, and if the switch is pressed once again, the search mode is returned to the use of film F1.By repeatedly pressing the switch 211, the search mode is changed to four different search modes. Initial mode setting switch 81-8
4 is a switch for determining which search mode should be initially set when the power switch is turned on; when the switch s1 is closed, the computer 200
sets the search mode to use film F1. When switch S2 is closed, the search mode uses film F2, when switch S5 is closed, the search mode uses film F5, and when switch 4 is closed, the search mode uses film F4. Set. If the initial mode setting switches 81 to S4 are set in advance to the search mode for the most frequently used film, the operator can set the search mode for the most frequently used film when the power is turned on. The work of operating the rear changeover switch 211 can be eliminated. Therefore, when using other films, switch 2 only.
All you have to do is operate 11.

The operation when the initial mode setting switch S1 is closed will now be described with reference to the flowchart of FIG.

When the power switch is turned on, the computer 200 detects the film F because the initial mode setting switch B1 is closed.
1, and the display drive circuit 21
2, the first display D10 is turned on, and from the signal 'ff91+ of the I10 port 204, the film F1 is turned on, similar to when the selection switch 120 in FIG. 5 is connected to the contact a.
Outputs gate signal. That is, a signal is outputted from the signal line 71 so that the outputs of the inverters 108, 109, and 110 shown in FIG. 5 become low level. The illumination of the first display D10 clearly indicates to the operator that the film F1 can be used for searching. After this, the computer 200
checks the operation status of the changeover switch 211 and the input key 210, and if the changeover switch 211 is off and the input key 210 is operated, it enters the search program, feeds the film, and performs the predetermined search operation. Move. While the film is being fed, a first frame mark count signal is counted at the input section of the computer 200 from the signal line L1 of the machine 10 port 2o2. After the power is turned on, when the selector switch 211 is turned on (closed) once, the computer 200 is set to the search mode using the film F2, and only the second display D2 lights up.
The signal line 12 of the I10 boat 204 outputs the same film II'2 gate signal as when the selection switch 120 of FIG. 5 is connected to the contact point. In other words, the output of inverter 10B in FIG.
The output of 9/110 outputs a low level signal. Hereinafter, as described above, if the changeover switch 211 is turned on twice after the power is turned on, the 3rd indicator D3 lights up and the signal line Jl! 1 outputs the same signal as when the selection switch 120 in FIG. , selection switch 120 f in FIG. 5:
Connect to contact d and output a signal similar to that of Totoki. When the search mode is set to use film 1P2 or film 11'5, a mark count signal is input to computer 200 from signal line L2 of port 202 from combination K of output signals from each photosensor. When the search mode using film F4 is set, a second frame mark count signal is input to computer 200 from signal line L3 based on the combination of output signals from each photosensor.

Note that the display method of the search mode is limited to the above embodiment4.
Instead, the search mode may be coded and displayed using a display that displays the search number.

As described above, according to the invention, it is possible to obtain count signals corresponding to classified marks without replacing the mark detection device, so information on a desired classification item can be easily and accurately retrieved. I can do it. Furthermore, the most frequently used search mode can be automatically set when the power is turned on, which is extremely convenient.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of a film to which the invention is applied, Fig. 2 is a configuration diagram of a film leader to which the invention is applied, Fig. 3 is a perspective view of a mark detection device, and Fig. 4 (Al-
(Drawing explaining the positional relationship between the DJ #i photosensor and the mark, Figure 5 is a diagram showing the search control circuit, Figure 6 is a diagram showing another embodiment of the search control circuit, and Figure 7 is a flowchart. 25, 26, 27, 28, 29...Photo sensor 1
20... Film lodging switch Applicant: Canon Co., Ltd.

Claims (1)

[Claims] (i) In a search device that selectively uses a plurality of information recording media that have search marks classified by information and have different search mark recording modes, a plurality of photos that detect the search mark on the information recording medium are used. A sensor, a mode selection means for switching to a search mode corresponding to the information recording medium to be used, and a count signal classified according to the classification of the search mark by a signal output from each photo sensor and a signal output from the mode selection means. An information retrieval device comprising a signal generating means for generating a signal, a counting means for counting a count signal outputted from the signal generating means for each category, and an initial mode setting means for setting a search mode to a predetermined mode when the power is turned on.