JPS59116730A - Information retrieval device - Google Patents

Abstract

PURPOSE:To make a fine adjustment accurately by turning on and off a display device during the fine adjustment and displaying the position of a picture, and stopping the operation when a switch other than a switch related to the fine adjustment is operated. CONSTITUTION:When a fine adjustment mode is entered by turning on a switch SW1, its signal is inputed to a retrieval control circuit 103 to inhibit the transmission of a general retrieval control signal from the circuit 103 to a control circuit 104 for a film driving part. At the same time, an oscillation circuit 101 starts oscillating by receiving the signal from the switch SW1, and the display device 105 starts turning on and off to inform an operator that the fine adjustment mode is effective. Further, a signal ''1'' is inputted to AND gates A1 and A2 by the closure of the switch SW1; and the A1 receives a signal from the ''+'' key of an SW2 and the A2 receives a signal from the ''-'' key of an SW3. The switch SW2 is depressed to send a signal out of the gate A1 and a fine adjustment control circuit 102 is put in operation to move forth or back a film finely by the film driving part control circuit 104 according to a signal from the circuit 102.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an apparatus for automatically searching for desired information in a recording medium such as a microfilm on which information is recorded, by finely adjusting the searched information to obtain an accurate number. The purpose is to stop it.

First, an outline of a conventional example of the above-mentioned search device will be explained. In Fig. 1, 1 is a film supply car that stores the microfilm F in a roll, 2 is a capstan roller for feeding out the microfilm in the cartridge, and Ml is a capstan roller 2. The motor that drives the M
2 is a motor for rewinding the film onto the film reel in the cart; 5OLI is a renoid that brings the capstan roller 2 into contact with the microfilm F via the support arm 3; 4 is the support arm 3, plunger 3a, and capstan. A spring that moves the roller 2 to separate the capstan roller 2 from the microfilm, a brake lever for the SOL 24i film rewinding motor M2. Possible, Prekinrenoid 5
When OL2 is activated, it suctions the brake plate 5 fixed to the motor shaft.

- Prevent rotation of motor M2.

6 and 7 are film guide rollers, 8 is a take-up reel, M
3 is a film winding motor for driving the take-up reel 8, and S Q L 3' is a brake solenoid for the motor M3.

Also, although not shown, the cartridge 1 and the take-up reel 8
A guide plate is provided to guide the film along the film feeding path between the two.

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); 17 is a lens for each frame of the microfilm F; This is a known mark detector that detects counting marks m provided on the sides.

The mark detector 17 has a photoelectric conversion element, and when the film F is fed, the light beam from the lamp 14 is interrupted by the mark m, thereby emitting a mark detection signal, and this mark detection signal is transmitted to the counter of the search device. is counted. The details of the counting device using mark signals are well known and will therefore be omitted.

When the frame number of a desired frame is input into the input circuit of the above search device, the motor Ml rotates and the solenoid 5O
LI operates and capstan roller 2 moves to cartridge 1.
The microfilm F comes into contact with the microfilm F coming out from the cartridge 1 and is pulled out from the cartridge 1, and its leading end is fed toward the take-up reel 8. When the leading edge of the microfilm approaches the take-up reel 8, the take-up remoter M3
rotates, and the leading end of the microfilm is wound around the take-up reel 8, and when autoloading is completed, the motor M1 and the solenoid 5OLI become inactive, but the microfilm F is continued to be fed by the rotation of the take-up reel 8.

The number of marks m detected by the microfilm feeding mark detector 17 is counted by a counter and compared with the numerical value of the frame number input in advance. If they match, a stop signal is generated from the counter and the platen lens 5QL3 operates and the winding shaft 11
5QL2 also brakes the shaft of the motor M2 to stop the rotation of the feed spool due to inertia, the feeding of the film is stopped, and the frame image of the designated number is projected onto the screen via the projection lens.

In the above configuration, the stop position of the film is not constant due to changes in the film feeding speed due to changes in the film winding diameter with respect to the reel 8 and the feed reel of the cartridge 1, and the lens This causes a slight shift in the position of the frame image projected onto the screen through 16.

Therefore, when making a hard copy of a frame image projected on a screen using a printer (not shown), it is necessary to finely adjust (hereinafter referred to as fine adjustment) the stopping position of the frame image on the screen.

In the conventional system, even when the above-mentioned fine adjustment operation is started, the display (described later) shows the same display as a normal search, so it is difficult to distinguish whether it is a fine adjustment operation or a search operation.

According to the present invention, while the position of the image is being finely adjusted, the display is displayed by blinking, and the operation of switches other than those related to the fine adjustment is stopped.

The specific configuration will be explained below using the embodiment shown in FIG.

In FIG. 2, SWI is the fine adjustment switch 1. (assumed to be an alternate switch), SW2 is °.

+" (forward direction) key, SW3 is the '°-°" (reverse direction) key, 11 to I3 are inverters, A1 and A2 are AND gates, 101 is an oscillation circuit, 102 is a fine control circuit, 103
1 is a search control circuit; 104 is a film drive unit control circuit;
05 is the display, solenoid 5OLI and motor M in Figure 1
The first film drive unit is the film drive unit control circuit 1.
Controlled by 04.

In a general search without fine adjustment in the above configuration, for example, when the SW2 °゛+'' key is pressed, the search control circuit 103 is activated and the film drive section control circuit 10 is activated.
Send a signal to 4, move the film one frame, and 10
Increase the number by 1 and display it on the display 5. IT-I
When the + key SW3 is pressed, the displayed number is driven in the direction of decreasing.

However, when the switch SW1 is turned on and the fine adjustment mode is entered, this signal enters the search control circuit 103 and the circuit 103
The transmission of general search control signals from to the film drive section control circuit 104 is prohibited. At the same time, the oscillation circuit 101 receives a signal from the switch SW1 and starts oscillating. In response to a signal from the oscillation circuit 101, the display 105 starts blinking to notify the operator that the fine adjustment mode is in progress. Also, when the switch SWI is turned on, a signal of "1°" is sent to the AND gate A1-A2, so that A1 receives the signal from the ゛°+゛° key of SW2. °−“Enables key signals to be accepted.

Therefore, every time the switch SW2 of the ゛+'' key is pressed, a signal is output from the anime/game AI and the fine adjustment control circuit 102
1, and a film drive section control circuit 104 controls the film drive section of FIG. 1 to finely advance the film in the forward direction based on a signal from the circuit 102. Par”
If the key switch SW3 is pressed intermittently, fine adjustment in the opposite direction is performed.

As explained above, fine adjustment can be made using the signals from the fine adjustment switch SW1 and the "10" or "-" key.

An example of the above search control circuit 103 is shown in FIG. (Things that are the same as those in FIG. 2 are indicated by the same reference numerals.) 301 is a numeric keypad and function key for inputting the desired frame number etc. to be searched; 302 is a search number for the information to be searched entered into the numeric keypad 301 (frame number); register for storing numbers), 303
is a register that stores the search number transferred from the register 302, and stores the search number of the previously searched information (the frame number of the information searched before the start of the search) until the search ends. 304 is an arithmetic circuit (subtraction circuit)
Then, the difference between registers 302 and 303 is calculated and the result is entered into subtraction counter 305.

The subtraction counter 305 stores the calculation result sent from the calculation circuit 304 and subtracts the mark signal sent from the mark detector 17. 30B is a waveform shaping circuit that shapes the mark signal output from the mark detector 17; 307;
A polarity determining circuit determines whether the calculation result at 304 is positive or negative, and outputs a signal to determine the film feeding direction depending on whether the result is positive or negative. 104 is the same film drive unit control circuit as in FIG.
The film is moved in the forward or reverse direction by driving the motor M3 (forward direction feed) or M2 (reverse direction feed) in FIG. When this happens, stop the motor and stop the film.

When fine adjustment switch SW1 is on, AND gate A3
~A5 is closed, so the search control circuit 1.3 does not work. When the fine adjustment switch SWI is turned off and the switch SW2 or SW3 is turned on, the AND gate A3 is turned on.
Alternatively, the A4 opens and outputs a pulse signal, and this pulse signal is sent to the register 302/arithmetic circuit 304, whereby the film is fed forward or backward by one frame.

With the above configuration, when the operator turns off the fine adjustment switch SWI and inputs a frame number of predetermined information into the numeric keypad 301, the input frame number is stored in the register 302, and this frame number and the same are stored in the register 303. The difference with the frame number is calculated by the calculation circuit 304 (302-3
03), the result is stored in the subtraction counter 305. Also, if the calculation result of the calculation circuit 307 is positive or negative, the motor M3
Or M2 is moved. That is, the film is moved forward or backward.

As the film moves, a mark signal is generated from the mark detection circuit 17, which passes through a waveform shaping circuit 306 and enters a subtraction counter 305 where it is subtracted and counted. When the inside of the counter reaches 0, a motor stop signal is output from the counter 305, and this signal stops the motor and stops the film.

At the end of the search, the contents of register 302 are transferred to register 303. Therefore, the frame number of the information currently stopped at a predetermined position is stored in the register 303.

[Brief explanation of the drawing]

Figure 1 is a perspective view of an example of a microfilm league, $2
The figure is a process diagram of the present invention, and FIG. 3 is an embodiment of the search control circuit. SWI is a fine adjustment switch, SW2 is '+°'' (forward direction)
key, SW3 is '-' (reverse direction) key, 11 to 13 are impark, Al/A2 is AND gate, 101 is oscillation circuit, 102 is fine control circuit, 103 is search control circuit, 1
04 is a film drive unit control circuit, and 105 is a display.

Claims (1)

[Claims] (1) In a device that automatically searches for desired information in a recording medium such as a microfilm on which information is recorded, a fine adjustment switch, a forward switch, a reverse switch, a search control circuit, a fine adjustment control circuit, and a film are used. It has a drive unit control circuit and a display, and it sends a normal search control stop signal from the fine adjustment switch to the search control circuit, and also sends a blinking signal to the display via the oscillation circuit to indicate that fine adjustment is in progress. A microfilm retrieval device characterized in that a fine adjustment control circuit is actuated by a signal from a film feeder and a signal from a forward or reverse feed switch to finely feed a film drive unit control circuit in the forward or reverse direction.