JPH0345370B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image search device that automatically searches for a desired image recorded on a film.

In recent years, as the amount of information has increased, microfilms on which a large amount of information is continuously recorded have become widely used. Microfilm includes roll film,
There are various types of film such as microfilm, but if you want to read the recorded information or obtain a copy of it, you need a microfilm reader equipped with a retrieval device or a microfilm. A reader printer is used.

This type of device optically detects marks on the film in order to automatically search for the desired image frame among the many image frames on the film, and uses these marks to automatically select the desired image. Search for
The image of the searched frame is projected onto a screen, etc. for use.

Microfilm is illuminated with a lamp to detect marks and project images, but in conventional microfilm readers, the illumination lamp remains lit after the power switch is turned on, even when it is not needed. Since the lighting is on, the life of the lighting lamp is short, and many expensive lamps must be prepared, resulting in high maintenance costs.

It is conceivable to turn off the lamp with a manually operated switch when it is not needed, but if you forget to turn on the lamp and give a search instruction by mistake, the mark will not be detected and the correct search operation will not be possible. This has the disadvantage of not being able to perform the following tasks, which may lead to incorrect operations.

The present invention aims to solve the above-mentioned drawbacks, and aims to provide an image retrieval device that extends the life of the lamp and prevents malfunctions during retrieval.

The present invention will be explained below with reference to the drawings.

FIG. 1 shows a microfilm reader or reader printer equipped with a retrieval device to which the present invention is applied, in which 1 is a cartridge storing microfilm in a roll, 2 is a film feeding motor, and 3 is coupled to motor 2. 4 is a pinch roller, 5 is a micro film, 6 is a film guide roller, 7 is a film guide plate, 8 is a frame mark detector, 9 is a subject mark detector, 10 is a micro film transport motor , 11 is a brake device, 12 is a capstan roller connected to the motor 10, 13 is a pinch roller, 14 is a micro switch for film detection, 1
5 is a film take-up reel, 16 is a lamp for illuminating the image area and mark area of the film, 17 is a condensing lens, and 18 is a projection lens. The film detection microswitch 14 outputs a film non-detection signal when no film is present in the film path.

When the capstan roller 3 rotates due to the drive of the film feed motor 2, the microfilm stored in the cartridge 1 is pulled out from the cartridge 1 by being pinched by the capstan roller 3 and the pinch roller 4, and taken out from the take-up reel. Sent to 15.

The film sent out of the cartridge is
The capstan 12 and the pinch roller 13, which are rotated by the drive of the film transfer motor 10, send the film in the forward direction (the direction in which it is wound onto the take-up reel), or in the reverse direction (the direction in which it is rewound into the cartridge) if necessary. It is now being sent to

The frame mark detector 8 and the subject mark detector 9 are
Each of them has a photoelectric conversion element that receives light from a mark on the film shown in FIG. 2, and when a mark is detected, outputs a mark detection signal, and this signal is sent to a search control circuit.

The details of the search control circuit that optically detects marks and performs automatic searches are well known from Japanese Patent Publication No. 41-260, etc., and therefore their explanation will be omitted.

The image on the microfilm is illuminated by a lamp 16 and a condensing lens 17, and is projected onto a screen (not shown) by a projection lens for viewing.

Figure 2 is an example of a microfilm used for image retrieval.The tip of the film is on the right side of the figure, and images are recorded in page order from the tip for each group of image frames with related information content. . m is a frame (page) search mark provided for each frame of microfilm, n ₁ , n ₂ , n ₃
is an item (group) search mark provided at the top frame of each piece of information. Each mark has a different density from its surroundings and is detected by mark detectors 8 and 9 shown in FIG. 1, respectively, and the mark detection signals are added or subtracted by a search control circuit and used for automatic search.

In Figure 2, each of the frames A ₁ to _{A 4} and B ₁ to B ₅ is 1
This indicates that the information is about a group.

FIG. 3 shows one embodiment of the operation panel of the search device of the present invention, 21 is a mode changeover switch for switching between frame search mode and case search mode, and 22 is a frame number of a desired image or a case number of a desired case. 23 is a display that displays the entered numerical value, 24 is a clear input key that clears incorrect input, 25 is an all clear key that clears the entire search circuit, 26 is a setting for the number of prints. 27 is a preset key for presetting numerical values in the search control circuit, 28 is a search start key for instructing automatic search start, 29 is for instructing to send one frame or one film in the opposite direction -1 frame A forward key 30 is a +1 frame forward key which instructs to send the film one frame or one item in the forward direction opposite to 29. A rewind key 31 instructs to rewind the film into the cartridge.32 is a forward key. The film feeding direction and feeding speed can be adjusted by adjusting the direction and amount of rotation of the control knob used to switch to manual search. Turning the knob 32 clockwise will feed the film in the forward direction, and turning the knob 32 counterclockwise will feed the film in the opposite direction.The larger the angle of rotation, the faster the feed speed will be. When you align a with index b on the control panel, the film will stop and the camera will switch to automatic search.

FIG. 4 is a diagram showing the structure of the operation knob 32.
3 is a cam that rotates integrally with the operating knob 32;
A variable resistor 4 is connected to the cam 33 and rotates together with the cam. The variable resistor 34 controls the power supplied to the motor 10, and by changing the resistance value of this resistor, the film feed speed can be changed. I can do it. Reference numeral 35 designates a micro switch, and when the reference position a of the knob 32 and the indicator b on the operation panel match, the actuator falls into the recess of the cam 33 and outputs a film feed stop signal and a film automatic search mode switching signal. There is.

Figure 5 shows the lighting lamp lighting circuit.
Reference numerals 22, 24 to 30, 31, and 35 are the keys and switches of the aforementioned operation panel, 40 is a NAND gate that outputs a high level signal when a low level (OV) signal is input, 41 is an OR gate, and 42 is a film detection micro switch 14. 43 is a flip-flop circuit; 43 is a flip-flop circuit; 43 is a flip-flop circuit; 43 is a flip-flop circuit;
4 is a relay drive circuit, 45 is a relay, 45' is a contact point of relay 45, 46 is a lighting lamp transformer, 4
7 is a power switch, and 50 ₁ to 50 ₂₀ are fixed resistors.

When the power switch 47 is turned on, a high level initial signal Ri is output and the flip-flop circuit 43
is reset by this initial signal Ri. When the flip-flop circuit 43 is reset, the output terminal Q becomes a low level, and the relay drive circuit 44
The relay 45 is deactivated via the contact 4
5' is open and the illumination lamp 16 is not lit.

Next, when the cartridge 1 is loaded into the microfilm reader, the reference position a of the operation knob 32 is aligned with the index b, and one of the keys on the operation panel is operated to search for a desired image frame. Or when the operation knob 32 is rotated,
A low-level search instruction signal is sent to the NAND gate 40, and the flip-flop 4 is output from the NAND gate.
3 is set, and the output terminal Q becomes high level. As a result, the relay 45 is activated via the relay drive circuit 44, its contact 45' is closed, and the illumination lamp 16 is lit. Therefore, the film is illuminated by the lamp 16, making it possible to detect the mark and read the image. When the film is transported and a desired image is retrieved, the film is stopped, and the desired image is projected onto a screen or the like and is read or copied by a printer. After using the desired image, the rewind key 31 is operated to rewind the film into the cartridge. When the entire film is rewound into the cartridge, the film detection microswitch 14 outputs a film non-detection signal, and this signal causes the differentiating circuit 42 to output a high-level pulse, which causes the flip-flop circuit 4 to output a high-level pulse.
3 is reset.

By resetting the flip-flop circuit 43, the relay 45 is deactivated via the relay drive circuit 44, its contact 45' is opened, and the illumination lamp 16 is extinguished.

As described above, the present invention provides an image search device that automatically searches for a desired image by detecting a search mark on a film in which an image and a search mark are recorded, and projects this image onto an imaging plane. a lamp for illuminating the search mark, a mark detection means for detecting light from the search mark, a film detection means for detecting whether or not a film is present at a predetermined position on the film movement path, and inputting a search command and search information. The lamp lights up when you operate the keyboard and keys for inputting search commands or search information.
Since the lamp control means is provided to turn the lamp on and off so that the lamp is turned off when the film detection means no longer detects the film, when a search is performed by inputting a search command or search information. Since the search mark is reliably detected, erroneous searches can be prevented, and the lamp turns off when the film is no longer detected, thereby extending the life of the lamp and saving power.

The present invention provides a reader using a roll film,
It can be applied not only to reader printers, but also to readers and reader printers that use film, and also to readers with automatic search devices and devices that have a feeding device that manually or automatically feeds film to reader printers. can.

Alternatively, the lamp may be blinked by a non-contact switch without using a relay.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a microfilm reader to which the present invention is applied, Fig. 2 is a diagram showing an example of a rolled microfilm, Fig. 3 is a front view of the operation panel, and Fig. 4 is a film feeding operation. A structural diagram of the knob, FIG. 5 is a diagram showing one embodiment of an illumination lamp lighting circuit. 16... Illumination lamp, 22, 24-30... Keys and switches of operation panel, 14... Film detection micro switch, 45... Relay.

Claims (1)

[Claims] 1. In an image retrieval device that searches for a desired image by detecting a retrieval mark on a film on which the image and retrieval mark are recorded and projects this image onto an imaging plane, a lamp for illuminating the film and a power source for the lamp are used. a power supply circuit for supplying the power, an opening/closing means for opening and closing the power supply circuit, an operation means for inputting search information and a search command operation, and detecting whether or not a film is present at a predetermined position in a film movement path. and a search command signal outputted when inputting search information or searching command operation by the operating means closes the opening/closing means and lights a lamp, and when the detecting means does not detect the film, and means for controlling the opening/closing means to open the opening/closing means and turn off the lamp in response to an output signal.