JPS63282727A - Information retrieving device - Google Patents

Abstract

PURPOSE:To easily detect an erroneous retrieval by counting marks to the final mark and detecting abnormality when the counted value is different from a previously inputted value counted to the final mark in case of retrieval. CONSTITUTION:Information such as a frame number and the number of copies, etc., which are wanted to be retrieved and copied is inputted from a keyboard 51 and transmitted to a storage arithmetic circuit 52. The circuit 52 counts mark detection signals from a mark detecting device 28 and compares the counted value with the previously inputted retrieval frame signal. When they coincide with each other, the circuit 52 transmits a stopping signal to a motor driving circuit 54 so as to stop motors 55 and 56, so that the desirable frame is made to be located on a desirable position. Next, the circuit 52 outputs a signal which executes copying. The mark value of a film wound to the final mark by repeating the above-mentioned actions is compared with the value previously counted in the circuit 52. When difference occurs between the values of the results, the erroneous detection is detected as abnormality.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an information retrieval device for retrieving image information on an information recording medium such as a microfilm having a retrieval mark.

(Prior art) Conventionally, search devices built into film readers and printers use a film with search marks provided on the side of each frame of the film, optically detect these marks, and search for them. By counting, a desired frame for film hanging is automatically searched.

The above search device illuminates the mark on the film with a lamp,
A mark detector detects changes in the light blocked by the marks when the film is moved, and a counter counts the output signal of this mark detector. The comparison circuit compares the number with the number, and when the two match, the comparison circuit issues a stop signal to the drive control circuit, which stops the drive system that transports the film and places the desired frame in a predetermined position where it will be projected on the screen. It is designed to stand still.

By the way, in the above-mentioned information retrieval device, by manually inputting operational information such as the desired frame number and the number of copies to be made before starting copying, a predetermined frame number can be printed according to the above-mentioned operational information with only a start command of the information retrieval device. Searching and copying can be done continuously.

(Problems to be Solved by the Invention) However, such prior art has the following problems. That is, even if an erroneous search occurs during the search, there is no means to check this, so there is a problem that the operation ends while the erroneous frame is being searched and copied. This erroneous search mainly occurs due to the following reasons. First, erroneous searches occur due to deflection of the film due to changes in film operating speed due to movement or stopping of the film during the search.

Second, when projecting an image on a film onto a screen or a photosensitive drum, the film is held between two pieces of glass in order to stabilize the distance between the film and the projection lens. However, when moving the film, at least one
Move the glass to release the film. At this time, erroneous retrieval occurs due to the deflection of the film caused by opening the glass. Third, dust attached to the film may be mistakenly detected as a search mark, resulting in erroneous searches. Fourthly, erroneous searches occur due to mismatch between the mark density on the film and the set search density of the search device.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art described above, and its purpose is to provide an information retrieval device that has a simple configuration and is capable of detecting erroneous searches. .

(Means for Solving the Problems) In order to achieve the first object, in the present invention, desired information on the information recording medium is counted by counting marks on the information recording medium with a counting means. The information retrieval device δ for searching is configured to include a detection means for detecting an abnormality when the count value up to the final mark obtained during the information search differs from the count value up to the final mark inputted in advance. .

(Function) In the present invention, marks are counted up to the last mark during information retrieval, and an abnormality is detected when the counted value differs from the counted value up to the last mark inputted in advance.

(Example) The present invention will be explained below based on illustrated embodiments.

FIG. 4 shows a film reader printer to which the information retrieval device according to the present invention is applied.

In the figure, F is a roll of microfilm as an information recording medium, l is a projection lamp, 2 is a reflecting mirror, 3 is a condenser lens, 4 is a projection lens, 5.6 and 7.8 are reflecting mirrors, and 9 is a projection screen. It is. Also, 10.11
are scanning mirrors arranged at 90° to each other;
2 is a photosensitive drum as an image recording medium, and 13 is a slit 1 disposed above the photosensitive drum 12 along its axial direction.
4 is a shutter base, 15 is a shutter base 13
CCD array fixed along the longitudinal direction on top, 16a
, 16b is a first shutter plate that is disposed on the shutter base 13 so as to be movable in the longitudinal direction and adjusts the opening length of the slit 14, and 18 is a first shutter plate that is movable in the width direction below the shutter base 13. This is a second shutter plate which is disposed separately and opens and closes the entire sleeve 14. The scanning mirror 10.
11 is movable in the directions of arrows S and 4R, and is normally retracted to a position away from the projection optical path A in the direction of arrow S. During printing, it is moved in the R direction and positioned at the starting position in the optical path A. Then, it moves in the S direction and scans and exposes the projected image of the film F onto the photosensitive drum 12 through the slit 14 through the optical path B. At this time, the shutter base 13 also moves in synchronization with the scanning mirror 10.11.

Figure 2 shows the film retrieval mechanism. In Figure 0, 2o is a supply reel, 21° and 22 are guide rollers,
23 and 24 are glass plates placed opposite each other across the film movement path, 25 is a capstan roller, 26 is a pinch roller,
27 is a take-up reel, and 28 is a mark detector. The supply reel 20 and the take-up reel 27 are connected to a film tensioning and winding motor (not shown), and a capstan roller 25
is connected to a film drive motor (not shown).

Microfilm F has a supply reel 2o and a take-up reel 27
The film is stretched between them, and is wound onto the take-up reel 27 or rewound onto the supply reel 20 by driving the capstan roller 25.

As shown in FIG. 3, the microfilm F has a negative image recorded in the frame 30 of the microfilm F.
The periphery of each frame is transparent, and an opaque search mark 29 is recorded on one side of the frame 30 that is transparent.

The film F passes between the glass plates 23, 24 and the illumination bag Ml.

The frame 30 and the search mark 29 are illuminated by the light from 2.3, and the image of the illuminated frame 30 is projected onto the screen 9.

The mark detector 28 has a photoelectric conversion element, and when the search mark 31 passes between the photoelectric conversion element and the lighting devices 1, 2.3, the light incident on the photoelectric conversion element is interrupted by the search mark 29. A pulse signal is generated from the photoelectric conversion element. This pulse signal is sent as a mark detection signal to a storage calculation section to be described later.

Figure 5 shows the external appearance of the device.
1 is a keyboard, 53 is a carrier section for searching for films, and 57 is a lamp for displaying erroneous searches.

FIG. 6 is a block diagram showing the control system.

51 is the keyboard, 52 is a storage/arithmetic unit as a detection means, 28 is the mark detector, 53 is the carrier part, 54 is a motor drive circuit provided in the carrier part 53, 55, 56 is the supply reel and This is a motor that drives the take-up reel.

In the above configuration, the information search device according to this embodiment detects an erroneous search as follows.

FIG. 1 is a flowchart showing the erroneous search detection operation.

First, information such as the frame number desired to be searched and copied and the number of copies to be made is input from the keyboard 51 (step 1). This information is sent to the storage calculation circuit 52 and sequentially stored in the 0th order.

When the operation start key on the keyboard 51 is pressed (step 2), the carrier 53 automatically feeds the film from the cartridge (not shown) and winds it onto the take-up reel to start initial loading of the search (step 3). At this time, if the first frame number of the cartridge is not 1,
To set the frame number (step 4), the memory calculation unit 52 counts the mark detection signal from the mark detector 28, compares this count with the pre-input search frame number, and finds that the two match. At this time, a stop signal is sent to the motor drive circuit 54 to stop the motors 55 and 56 for transporting the film, and the film is stopped so that the desired frame comes to a predetermined position. A signal is output (step 5).

After repeating the above operations and completing all input search items (step 6), the memory calculation circuit 52 instructs the carrier section 53 to search for the last frame, and the film is wound up to the last frame (step 7). , the number of marks up to the search mark 29 recorded in the last frame is counted, and the value is sent to the storage calculation section 52.0 Then, the storage calculation section 52
outputs a film rewinding signal to the carrier section 53, and the film is rewound onto the supply reel 20 in the cartridge to its initial state (step 8).

In this embodiment, when performing the above series of operations, the search frame number is counted and a series of operations shown in X in Fig. 1 are performed to detect erroneous searches that occur during the operation. be.

That is, at the same time that the search copy information is input in step 1, the count value of the search mark 29 up to the last frame is input from the keyboard 51 (step 9), and this information is sent to the storage calculation section 52 and stored.

Next, in step 7, the number of marks 29 up to the last mark is counted from the film that has been a-cut to the last frame, and the value is sent to the storage calculation section 52.

In this case, in the storage calculation section 52, the step 9 is performed in advance.
Compare the counted value of the mark 29 up to the last frame input in step 10) with the counted value of the mark 29 counted in step 7), and if these numbers are the same, the storage calculation unit 52 performs the next operation. (Step 11)
), if they are not the same, an abnormality is displayed on the display lamp 57 provided on the keyboard 51, and an alarm is issued (step 12).

The count value of the mark 29 inputted in advance up to the last frame is compared with the count value of the mark 29 sent to the last frame after searching for the frame to be searched, and these values are compared. By determining whether or not they are the same, it is possible to detect and display erroneous retrieval of the film due to sagging, dirt, etc. of the film.

In addition, when an error occurs due to an erroneous retrieval, the search and copying of the cartridge in which the erroneous retrieval has occurred is automatically repeated, and the number of the cartridge in which the erroneous retrieval has occurred is recorded and stored in the memory calculation unit 52, so that the operator can check it later. You can also make things possible.

Therefore, it is possible to prevent the operator from terminating the search copying process, thinking that a miscopy caused by an erroneous search is a correct copy.

Furthermore, in this embodiment, the checking operations in Steps 9 to 11 are performed before rewinding the film, so that when an abnormality is detected, there is no need to take the trouble of rewinding the film and searching from the first frame. This makes it possible to quickly detect erroneous searches.

In this embodiment, the count value of the mark 29 up to the last frame is input using the keyboard 51, but the configuration is such that the count value stored in the computer is automatically input depending on the film to be searched. It is also possible to do so.

Furthermore, in this embodiment, the check operation for erroneous retrieval is performed after the search for a desired frame is completed, but it may be configured to be performed during the search for a frame. In this case, the occurrence of erroneous retrieval can be detected early. This makes it possible to omit unnecessary searches after an erroneous search occurs.

(Effects of the Invention) As described above, in the present invention, marks are counted up to the last mark during information retrieval, and when the counted value differs from the counted value up to the last mark input in advance, an abnormality is detected. By detecting this, erroneous searches can be detected with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing the operation of an information retrieval device according to an embodiment of the present invention, and FIG. 2 is a front view showing the retrieval mechanism.
Fig. 3 is a plan view showing a microfilm, Fig. 4 is a schematic perspective view showing a film reader printer as an example of an information retrieval device, Fig. 5 is an external view of the device, and Fig. 6 is a control system. FIG. Explanation of symbols F...Microfilm (information recording medium) 20...
Supply reel 27... Take-up reel 28... Mark detector 29... Search mark (mark) 30... Frame

Claims (1)

[Claims] In an information retrieval device that searches for desired information in an information recording medium by counting marks on the information recording medium with a counting means, a count value up to the final mark obtained during information retrieval is input in advance. An information retrieval device characterized by comprising a detection means for detecting an abnormality when the count value differs from the count up to the final mark.