JPH0721609B2 - Information retrieval device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an information retrieval apparatus for automatically retrieving desired information in an information recording medium by counting marks on an information recording medium such as a microfilm.

(Prior Art) Conventionally, a search device incorporated in a film reader or the like uses a film having a search mark on the side of each frame of the film, optically detects this mark, and counts it. As a result, the desired frame in the film is automatically searched.

The above search device illuminates the mark on the film with a lamp,
When the film is transferred, the change in the light blocked by the mark is detected by the mark detector, the output signal of the mark detector is counted by the counter, and the count content of the counter and the desired input from the keyboard or the like are input. The comparison circuit compares the frame number of the image frame, and when the two match, the comparison circuit issues a stop signal to the drive control circuit to stop the drive system that transfers the film and project the desired frame on the screen. It is made to stand still at a predetermined position.

By the way, as the microfilm, for example, the fifth
As shown in the figure, there is a microfilm 106 on which image frames 107 are recorded in two examples. Reference numeral 108 is a search mark provided on the side of each image frame 107. The shooting method of film 106 is called duo, and images are shot on one side of the film in order from the leading edge of the film, and the film that has been shot is loaded in reverse on one side, and the remaining one side of the film is imaged from the trailing edge. It is a method of shooting back and forth. In FIG. 5, the left side is the leading edge of the film and the right side is the trailing edge of the film. The microfilm 106 has a number attached to the image (actually, such a number is not recorded, but for convenience of explanation, The images are taken in order (numbers are given to image frames), and in the figure, the upper side is the A channel and the lower side is the B channel. Further, search marks 108 are recorded on the sides of the A channel and the B channel in association with each image frame 107 for searching for images.

(Problems to be solved by the invention) However, in such a conventional example, the address on the film of each image frame of the film is from the A channel to the B channel as shown by the frame number in FIG. Since it is continuous, the marks of each image frame from the first image frame (address number 1) to the last image frame (address number 2000) of the A channel are sequentially counted, and then the first image frame of the B channel (address number). By counting the marks in (2001), the address of the top image frame of the B channel can be determined from the count value of the mark counter. Therefore, when counting is started from the mark of the first image frame of the A channel, even if the mark of the B channel is counted during running, this count value does not indicate an actual address, so it has no meaning. In addition, 1 of the image address with B channel
Even if one is found, there is no mark information other than that mark, so at the time of the next search, the film must be run again and the address must be counted from the mark information of the same part, which increases the search time. There was a problem.

Therefore, the present invention has been made to solve the above-mentioned problems of the conventional example, and its purpose is to make it possible to predict the address position of a desired image frame in the next search, An object of the present invention is to provide an information retrieval device that can perform retrieval in a short time.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, a mark on a film having an image and a mark in two rows of A channel and B channel is detected and counted. In the information retrieving apparatus for retrieving a desired image, the marks of the A channel and the B channel are detected while the film is running, the detected mark of the A channel is counted by the counting means, and the detected mark of the B channel is stored. When the address of one image of the B channel is found, the mark of the B channel stored in the storage means is converted into the address on the film based on this address. .

(Operation) In the present invention having the above structure, the mark information is sequentially stored in the storage means while the information recording medium is running, and when one of the addresses on the film of the B channel image is found, the mark information is recorded. Is converted into an actual address by the conversion means, so that the actual address of the mark information of the B channel already stored in the storage means is clarified.

(Example) Below, this invention is demonstrated based on the Example shown in figure. Fourth
The figure shows a film feeding section of a film reader with a search device to which the present invention is applied. In the figure, 1 is a film supply cartridge for storing a microfilm F as an information recording medium in a roll shape, and 2 is a cartridge 1 inside. A capstan roller for sending out the microfilm F, M1 for driving the capstan roller 2, M2 for rewinding the film spool in the cartridge, and SOL1 for supporting the capstan via the support arm 3. Solenoid for contacting the roller 2 with the microfilm F, 4
Is a spring that moves the support arm 3, the plunger 3a, and the capstan roller 2 to separate the capstan roller 2 from the microfilm. SOL2 is a brake solenoid for the film rewinding motor M2. When the brake solenoid SOL2 does not operate, The motor M2 is rotatable, and when the brake solenoid SOL2 is activated (turned on), the braking plate 5 fixed to the motor shaft is attracted to prevent rotation of the motor.

Reference numerals 6 and 7 are film guide rollers, 8 is a take-up reel, M3 is a film take-up motor for rotating the take-up reel 8, and SOL3 is a brake solenoid for the motor M3.

Further, although not shown, a guide plate for guiding the film along the film feeding path between the cartridge 1 and the take-up reel 8 is provided.

14 is a lamp for illuminating the microfilm F, 15 is a condenser lens, 16 is a projection lens for enlarging and projecting the image of the film F illuminated by the lamp 14 onto a screen (not shown), and 17 is each frame of the microfilm F. This is a known mark detector for detecting the counting mark m provided on the side.

The mark detectors 17a and 17b have photoelectric conversion elements, and when the film F is transferred, the light from the lamp 14 is interrupted by the mark m to generate a mark detection signal, and the mark detection signal is counted by the retrieval device. To be served. Since the details of the search device are publicly known, description thereof will be omitted.

Further, as shown in FIG. 3, the image film 18 is recorded in two rows on the microfilm F of the present embodiment, and the large mark 1 and the small mark m are provided on the sides corresponding to the image frames 18. The shooting method of such a microfilm F is called a duo, and images are sequentially shot on one side of the film from the leading edge of the film, and the film that has been shot on one side is loaded in reverse, The images are taken in order from the rear end on the remaining one side, so to speak, it is a reciprocating method. In FIG. 3, the left side is the front end direction of the film, the right side is the rear end of the film, the upper side is the A channel, and the lower side is the B channel.

Further, FIG. 1 is a block diagram showing the control system of the present embodiment. In FIG. 1, reference numeral 20 denotes a microprocessor, and this microprocessor 20 has mark detectors 17a and 17b detecting marks l and m on the film. A counting unit 21 for counting the mark detection signals, and a mark storage memory as a storage unit for sequentially storing the detected mark signals for storing the relative position on the film of the marks detected by the B-channel mark detector 17b. 22, a control unit 23 for controlling film feeding, and a conversion unit 24 as a conversion unit for converting each mark signal stored in the memory 22 into an actual address. An input device 25 inputs address information of the image frame 18 to the control unit 23 with a key or the like. Reference numeral 26 is a display for displaying the contents of the mark storage memory 22, and 27 is a motor drive controller for feeding and stopping the film based on a control signal from the controller 23. The mark of channel A is detected by the mark detector 17a, and the mark of channel B is detected by the mark detector 17b.

In the above configuration, the information retrieval apparatus according to the present embodiment performs real address conversion of the mark information of channel B according to the flowchart shown in FIG. That is, in step, the film is fed out from the leading edge of the film and the search is started. The marks of the A channel detected while the film is running are sequentially counted by the counting unit 21, and the marks of the B channel are sequentially stored in the memory 22. In step, it is judged whether or not the film is fed to the film end, and when it is fed to the film end, in step, the last address of the A channel is confirmed, and then in step, the memory contents stored last are taken out sequentially. In the step, the converting unit 24 converts the mark information of the B channel after the address of the A channel. Then, in step, it is judged whether the conversion is completed up to the beginning of the film,
When the processing is completed, the conversion of the B channel address is completed (step). On the other hand, in the step, if the film end is not reached, the mark signal is further input in the step, and it is judged whether or not the mark is the small mark m in the step. This is stored in the next memory (step), and in the case of the large mark 1, the information of the large mark 1 is stored in the next memory (step), and these operations are repeated until the film end.

That is, when a B-channel mark signal is input while the film is running, the information of this mark is sequentially stored in the mark storage memory 22, and the end of the film is reached, and one B-channel image frame is recorded. When the address becomes clear, the stored contents are converted into the address. When the conversion from the beginning of the B channel of the film to the end (the trailing end of the film) marks is completed, the address of the entire film is known. Therefore, the address of the beginning of the B channel is known from this address. At the time of the next search, the desired image frame of the B channel can be searched by the mark recorded in the mark storage memory 22 and its address. Further memory 22
A desired address position can be predicted by the relative position of the mark stored in the table, and a short time search can be performed by controlling the speed of the motor M2 or M3.

In the above embodiment, if the film F is run to the end while the mark information is stored after loading the film F, when the film F reaches the end, the address connection from the channel A to the channel B is made. Therefore, even if the B channel address is not set, the entire address position can be immediately known, and high-speed search can be performed.

Even when the search is in progress, when the address of the image frame on the B channel is set from the input device 25 or the like, the mark information stored so far is converted into the address so that a part of the film F is recorded. The address arrangement of will be known.

In addition, in the above-mentioned embodiment, the example in which the present invention is applied to the duo film has been described, but the present invention can be applied to a micro film of a normal photographing system.

(Effect of the Invention) The information retrieval apparatus according to the present invention has the above-described configuration and operation. Even when the actual address of the image frame of the B channel on the film is unknown, the B channel detected while the film is running. If the mark signal is stored, and then the address of a certain image frame of the B channel is found, each mark signal stored based on this address is converted into an address. Becomes clear, and the time required for the next search can be significantly shortened.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control system in an embodiment of the information retrieval apparatus according to the present invention, FIG. 2 is a flowchart of the embodiment, FIG. 3 is a partial plan view showing a film in the embodiment, and FIG. FIG. 5 is a schematic perspective view showing a film feeding section of a film reader to which the embodiment is applied, and FIG. 5 is a partial plan view of a duo film. Explanation of code 21 …… Counting unit 22 …… Mark storage memory (storage unit) 23 …… Control unit 24 …… Conversion unit (conversion unit) 25 …… Input device F …… Microfilm (information recording medium)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiko Moriya 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Shigeru Sugita 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated (72) Inventor Ryoichi Imai 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Hitoshi Yanagawa 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. ( 56) References JP-A-58-80772 (JP, A) JP-A-58-225484 (JP, A)

Claims (1)

[Claims] 1. An information retrieving apparatus for retrieving a desired image by detecting a mark on a film having an image and a mark in two rows of channel A and channel B and counting the number of the marks, and the channel A while the film is running. And the mark of the B channel is detected, the detected mark of the A channel is counted by the counting means, the detected mark of the B channel is sequentially stored in the storage means, and when the address of one image of the B channel is found, this address The information retrieval device is characterized in that the B channel mark stored in the storage means is converted into an address on the film based on the above.