JPS645348B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information retrieval device that searches for desired information in an information support such as a film or tape by counting search marks in the support.

Generally, as a method of searching for desired information on a film, a search mark is set corresponding to each frame of the film, and the number of these marks is counted when the film is fed, and the counted value of the mark and the desired information to be searched are determined. There is a method of detecting desired information by comparing the address number of the frame.

There are several types of search marks depending on their size and location on the film, and when searching by selecting one of multiple films with different mark forms, the operator must search. It is necessary to switch and adjust the search device in advance according to the shape of the search mark of the selected film, but there is a problem that the search operation may be performed incorrectly due to incorrect operation or forgetting to operate it. It was hot.

The present invention provides an information retrieval device that can prevent erroneous operations and correctly switch the retrieval device so that a correct retrieval operation suitable for the form of the retrieval mark on the information support used for retrieval is performed. It is.

The present invention will be explained below using specific examples shown in the drawings. FIG. 1 shows a film feeding section of a film reader with a retrieval device to which the present invention is applied.

In the figure, 1 is a removable film supply cartridge that stores a roll of microfilm F having a large number of image frames and marks, and 2 is a microfilm that detects when the cartridge 1 is installed in a predetermined position of the film reader. 3 is a capstan roller for feeding out the microfilm in the cartridge 1; 4 is a film feeding motor for rotating the capstan roller 3;
5 is a film winding motor for rotating the film spool in the cartridge; 6 is a solenoid for moving the capstan roller 3 between a position in contact with the microfilm F and a position away from the microfilm.

7 ₁ and 7 ₂ are film guide rollers, 8 is a film take-up reel, and 9 is applied pressure by a spring 10 toward the center of the take-up shaft of the take-up reel 8, so that the leading edge of the film is moved toward the center of the take-up reel 8. This is a guide roller to ensure secure winding around the take-up shaft.

11 is a film winding motor for rotating the winding reel 8; Although not shown, a guide plate is provided for guiding the film along a predetermined film feeding path between the cartridge 8 and the take-up reel.

In the above configuration, when the motor 4 is driven and the solenoid 6 is operated, the capstan roller 3
rotates and moves to a position where it contacts the microfilm F, and the tip of the film is fed out from the cartridge 1 due to the contact between the capstan roller 3 and the microfilm, and the film F is transferred along a predetermined path to the take-up reel 8. will be sent towards.

When the leading edge of the film passes the guide roller ₇₂ , a film detector (not shown) detects the microfilm, and this detection signal drives the motor 11, causing the take-up reel 8 to rotate.

When the leading end of the film F is fed to the take-up reel 8, the leading end of the film is automatically wound around the take-up shaft of the take-up reel 8 by the action of the guide roller 9. When the film F is wound around the take-up reel 8, the motor 4 and solenoid 6 become inactive, and the capstan roller 3 returns to its original position away from the film. When the leading end of the film is wound around the take-up reel 8, the film 6 is transferred from the cartridge 1 to the take-up reel 8 by rotation of the take-up reel 8. When rewinding the microfilm F into the cartridge 1, the motor 11
When the motor 5 is deactivated and the motor 5 is driven, the film spool in the cartridge 1 rotates in the direction of winding the film, and the film is rewound into the cartridge 1. Therefore, by driving either motor 5 or 11, the film can be fed in the forward or reverse direction.

12 is a lamp that illuminates the microfilm F;
13 is a condenser lens; 14 is a projection lens for enlarging and projecting the image of the film F illuminated by the lamp 12 onto a screen (not shown); and 15' is a counting lens provided on the side of each frame of the microfilm F. This is a known mark detector that detects mark m.

The mark detector 15' has a photoelectric conversion element, and when the film F is fed, the light beam from the lamp 12 is interrupted by the mark m to generate a mark detection signal, and this mark detection signal is used for searching. It is counted by the counter of the device.

Microfilm F as a microfilm
There are various microfilms with different sizes and placement positions of the counting marks m provided on the sides of each frame, and by adjusting the control circuit of the retrieval device according to the type of film, each microfilm can be It is possible to perform correct search operations corresponding to the following. FIG _. 2 shows an example of a microfilm, in which a mark _m1 of the same size is provided on the lower side of each image frame.

In the microfilm _F2 , a frame mark _m21 is provided on the bottom side of each image frame, and a subject mark _m22 is provided on the top side of the first image frame of one group consisting of a plurality of frames related to information content.

The microfilm _F3 is provided with marks _M3 corresponding to the respective image frames recorded in two upper and lower rows.

Microfilm _F4 has a frame mark _M41 on the bottom side of each image frame, and a subject mark on the bottom side of the first image frame in a group of multiple frames.
_m42 is provided. The lengths of the marks m ₄₁ and m ₄₂ in the film feeding direction are determined so that m ₄₂ >m ₄₁ .

When selecting one of the four types of microfilm to perform a search, the operator must use the reader printer and the search device to perform the correct search operation using the preselected microfilm type, or mark. It is necessary to perform a switching operation.

FIG. 3 shows an input device provided in the operating section of the reader-printer, and the input device 15 is electrically connected to the main body of the search device by a cable 16. Reference numeral 17 denotes a display section for displaying the type of microfilm that can be used and the search number, which in this example is a 7-digit display using light emitting diodes. 18 is a numeric key for inputting the address number or frame number of the image to be searched; 19 is a start key for instructing the start of the search; and 20 is a mode switching key for selecting the search mode. Mode switching key 2
0 indicates that each time the operator presses a key, the search mode, that is, the types of films that can be used in the search device are changed to F ₁ , F ₂ ,
The search mode sequentially changes to F ₃ , F ₄ , F ₁ , F _{2 .} . . , and the display on the display unit 17 changes sequentially in response to the change in the search mode. Therefore, the operator can know the type of microfilm that can be searched by the search device from the number displayed on the display unit 17, and the type of microfilm to be used does not correspond to the display on the display unit 17. In this case, the mode switching key 20 may be operated to switch to the corresponding display.
The display unit 17 displays the type of film (search mode) that can be used when the cartridge 1 is not installed in a predetermined position, and displays the type of film (search mode) that can be used in a two-digit number.
When the cartridge is installed in a predetermined position, the microswitch 2 detects the cartridge and displays all seven digits to represent the search number.

Now, when the operator turns on the power switch (not shown) of the reader printer without installing the cartridge 1, the display section 17 of the input device 15 will appear on the fourth screen.
Only two-digit numbers are displayed as shown in any one of Figures A to D. Here, 2 indicated by A in Figure 4
The digit number "21" indicates that microfilm F ₁ can be used (searchable), and the number "22" indicated by B indicates that microfilm F ₂ can be used.
The number "23" indicated by indicates microfilm F ₃ ,
The number "24" indicated by D indicates the usable state of microfilm F ₄ , and this two-digit number indicates the search mode, and the available films can be known by the displayed search mode. . For example, when the display unit 17 displays the number "21", it indicates that the search device can search using the mark of the microfilm _F1 , and at this time, other films _F2 , _F3 , _F4 If you use , it indicates that the correct search operation is not being performed.

Therefore, each time the operator presses the mode switching key 20, the microfilms that can be searched are F ₁ , F ₂ ,
F ₃ , F ₄ , F ₁ , F 2 , F ₃ , ... changes in the order of F 3 , F _{4 , F 1} , F 2 , F 3 , ..., and the display section 17 also displays "21", "22", "23", "24", "21"
,
Since the number changes in the order of "22", "23", etc., the operator can look at the display on the display unit 17 and select one of the four types of films that can be used without fail.

After the above operations, the cartridge containing the predetermined microfilm is loaded into the retrieval device shown in FIG.

FIG. 1 shows a cartridge 1 loaded into a search device. At the same time as the cartridge 1 is loaded, the micro switch 2 is turned on, and this signal causes the display section 17 of the input device shown in FIG.
The digit display changes to a 7-digit display, indicating that the preparatory operation for the search has been completed.

Next, when the operator inputs the desired frame number on the microfilm using the numeric keys 18, this input data is instantly stored in the memory in the search control circuit (not shown), as shown in FIG. It is displayed on the display section 17 as shown in FIG.

Thereafter, when the start key 19 is pressed, feeding of the microfilm stored in the cartridge 1 is started, and while the film is being fed, the mark detector 15' detects the mark, and the output signal of the mark detector is set to indicate the selected mark. The film is sent to a search device controlled to correspond to the search mode, performs a predetermined search operation, and when the mark of the desired image frame is detected, feeding of the film is stopped and the desired image is displayed by the projection lens 14. projected onto the screen.

FIG. 6 shows a block diagram of the search device, including a cartridge detection micro switch 2, an input device 15
The output signal of the mark detector 15 is sent to a control circuit 50 consisting of a microcomputer.

The control circuit 50 causes the display unit 17 to display a two-digit number corresponding to the selected search mode in response to the output signal of the mode switching key 20 of the input device 15 when the microswitch 2 does not detect the cartridge. Also, when the micro switch 2 detects the cartridge, all seven digits are displayed on the display section 17 (each digit is displayed as "0"), and when the frame number is input using the numeric keys 18 in this state, The frame number is displayed on the display section 17.

The means for switching and adjusting the control circuit of the search device according to the switching of the mode switching key 20 is disclosed in Japanese Patent Application No. 57-115847.
The details are omitted as they are listed in the issue.

In this embodiment, the types of films that can be used (search mode) are displayed numerically.
Other distinguishable symbols such as alphanumeric characters may be used for display.

As described above, the present invention displays the search mode when the information support is not attached to the predetermined position, and displays the search information when it is attached.
Operation errors and erroneous searches can be prevented.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a film feeding section of a reader printer with a search device to which the present invention is applied, FIG. 2 is a diagram explaining various types of films, and FIG. 3 is a schematic diagram of an input device of the reader printer. FIG. 4 is a diagram for explaining the display on the display section of the input device, FIG. 5 is a diagram showing a state in which a search number is displayed on the display section of the input device, and FIG. 6 is a schematic diagram of a search control circuit. 1... Cartridge, 2... Micro switch, 8... Take-up reel, 15'... Mark detector,
17...Display section.

Claims (1)

[Claims] 1. In an apparatus for performing an information search by selectively using a plurality of information supports having different recording forms of search marks, a display means for selectively displaying a search mode and search information corresponding to the information support; An information retrieval device comprising means for switching a display means to display a search mode when an information support is not attached to a predetermined position and to display search information when an information support is attached.