JPH04177333A - Information retrieval device - Google Patents

Abstract

PURPOSE:To read a plurality of continued frame images, so as to shorten the time for reading by arranging a frame mark detector on the side of a head frame of a sheet of platen glass whose length corresponds to multiple frames. CONSTITUTION:A frame mark detector 15 is arranged in the side of head frames of platen glass 17, 18 whose length corresponds to multiple frames. The head frames of the desired series of frame images to be read and processed, are retrieved and located on the position of the detector 15 by the detector 15, and after the head frame is read and processed, a film F is kept stopped, while a reading optical system L is moved to a next frame position, and the operation of reading and processing the frame image is executed in order. Reading process of the frame image of a plurality of frames existing in the region corresponds to the length of the platen glass 17, 19 can be achieved one by one by one-time film feeding. The reading time of each frame image can thus be shortened, while the damaging and contamination concomitant with the feeding of the film can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides an image processing system for transferring a desired frame image of a roll-shaped microfilm on which a plurality of frame image information is recorded in a microfilm reader, a printer, etc. The present invention relates to an information retrieval device that locates a retrieval position at a reading position (frame image exposure position, object position of a projection optical system, etc.).

(Prior Art) FIG. 6 shows an example of a conventional microfilm information retrieval device.

1 is a film supply that can be attached to and detached from the device, which contains a roll of microfilm F having a large number of image frames f and image frame counting (search) marks m (m + ・ 2 . . . ) cartridge, 2 is cartridge 1
3 is a film feeding motor for rotating the capstan roller 2; 4 is a film winding motor for rotating the film spool in the cartridge 1; 5 is a capstan roller. This is a solenoid that moves the microfilm F to a position where it contacts the microfilm F and a position where it moves away from the microfilm F. 6 is a film guide roller, 7 is a film take-up reel, and 8 is a film take-up motor for rotating the take-up reel. Although not shown in the drawings, a guide plate is provided between the cartridge 1 and the take-up reel 7 for guiding the film along a predetermined film feeding path.

In the above configuration, when the motor 3 is driven and the solenoid 5 is activated, the capstan roller 2 rotates and moves to a position where it contacts the microfilm F, and the contact between the capstan roller 2 and the microfilm F causes the cartridge to be removed. The leading edge of the film is fed out from 1,
The film F is fed toward the take-up reel 7 along a predetermined path. When the leading end of the film F is fed to the take-up reel, the leading end of the film is automatically wound around the winding shaft (core) of the take-up reel by the action of a winding roller (not shown).

When the film F is wound around the take-up reel, the motor 3 and solenoid 5 become inactive, and the capstan roller 2 separates from the film F and returns to its original position. Also film F
When the leading end of the film F is wound around the take-up reel, the film F is transferred from the cartridge 1 side to the take-up reel side by rotation of the take-up reel by the motor 8 (film forwarding).

When rewinding the microfilm F from the front to the third side (reverse film feeding), the motor 8 is deactivated and the motor 4 is turned off.
When driven, the film spool inside the cartridge 1 rotates in the film winding direction, and the film is rewound into the cartridge 1.

That is, by driving either the motor 4 or 8, the film can be fed forward or backward.

9 is a lamp that illuminates the microfilm F; 10 is a condenser lens; 11 is a projection lens that forms an image of the frame image f of the film F illuminated by the lamp 9 on a reading surface 13 of a one-dimensional image sensor 12 such as a CCD; 14; is a reflecting mirror for projecting the image light from the lens 11 onto the reading surface 13.

Reference numeral 15 denotes a known mark detector for detecting counting marks m provided on the sides of each frame image f of the microfilm F. The mark detector 15 has a photoelectric conversion element, and has a film F.
When the film is fed, the light beam from the lamp 9 is interrupted by the mark to output a signal, and when the frame mark m of the film is detected, a frame mark signal is output.

The frame mark signals are counted, and when a desired frame image reaches the image reading position (the position of the mark detector 15), the film feeding motor 4 or 8 is stopped. After searching for a desired frame image, when the operator presses the image reading position button, the -dimensional image sensor 12 moves in the sub-scanning direction along the reading surface 13 in the direction of the arrow 16 to read the image.

, <- (Problems to be Solved by the Invention) However, in the above-mentioned conventional example, it is necessary to feed the film every time a desired frame image is retrieved, and therefore, there are the following drawbacks. That is, even when reading consecutive frame images, film feeding and image reading must be repeated for each frame, resulting in a longer reading time for each frame. Further, the film image surface is likely to be scratched or smudged due to this repeated film feeding operation.

The present invention aims to solve these problems.

(Means for Solving the Problems) The present invention enables a desired frame image of a roll-shaped microfilm on which a plurality of frame image information is recorded to be transferred by frame marks provided corresponding to each frame on the microfilm. The information retrieval device locates the image at an image reading position by detecting a mark with a mark detector, and the two pressure plate crows that sandwich the roll film have a length corresponding to a plurality of frames of the roll film, and An information retrieval device characterized in that a film feeding kite is formed, and the frame mark detectors are respectively arranged on the first frame side of the pressure plate crow having a length corresponding to a plurality of frames.

Furthermore, the above-mentioned apparatus is an information retrieval device characterized in that out of a plurality of frame images of a microfilm held between vertical pressure plate glasses, each frame image except the first frame image is retrieved by moving the reading optical system. be.

(Function) As described above, by placing a frame mark detector on the first frame side of the pressure plate glass having a length of multiple frames, the first frame of a desired series of multiple frame images to be read is detected as a mark. After the first frame is read and processed by the camera at the position of the mark detector, the film is stopped and the reading optical system is moved to the next frame position and the frame image is read and processed. By sequentially performing the following actions, 1
By feeding the film once, it is possible to sequentially read a plurality of frame images existing within the length range of the pressure plate.

In other words, when reading consecutive frame images, it is not necessary to feed the film around the edge for each frame, which reduces the time required to read each frame image, and also prevents scratches and dirt that may occur as the film is fed. can be reduced.

(Example) FIG. 1 is a diagram showing an outline of an information retrieval device according to the present invention. Note that the same reference numerals are used for the same components as in the prior art device shown in FIG. 6, and repeated explanations will be omitted.

17 is an upper pressure plate glass for roll film, 18 is a guide plate adhered to this, 19 is a lower pressure plate crow, and a film feeding path is configured between the upper and lower pressure plate glasses 17 and 19.・19 has the length dimension iL (FIG. 2) of the multiple frame molecules 1 to f7 of the film F.

FIGS. 3(a) and 3(b) are cross-sectional views showing details of the bow 9 of the pressure plate glass portion 17, and FIG. 3(a) shows the upper pressure plate glass 17 released from the lower pressure plate glass 19. The width W of the lower pressure plate glass 19 is 161!1.
The width is approximately 16 to 25 mm for the m-width roll film F. FIG. 3(b) shows the state during image reading, in which the upper pressure plate glass 17 is pressed against the lower pressure plate glass 19 with the film F sandwiched therebetween.

20 (Fig. 1) is the above two upper and lower pressure plate glasses 17 and 19.
This is a lamp such as a fluorescent lamp that illuminates a plurality of frame images of the film F held between the two frames.

L is a lens for forming a frame image f of a roll film F illuminated by a lamp 20 on a one-dimensional image sensor S, and a frame image is formed by this lens L and mirror M1.
・M2 ・An image is formed on the one-dimensional image sensor S via M3.

Reference numeral 21 is a first mirror stand on which a mirror M1 and a lens L are mounted, one end of which is slidable along a sliding shaft 22, and the other end of which is slidable on a sliding rail 23.

24 is equipped with mirrors M2 and M3, and the first mirror stand 21
Similarly, one end is a second mirror stand that is slidable along the sliding shaft 22, and the other end is slidable on the sliding rail 23.

25 is a pulley 26 fixed to the main body chassis (not shown)
and the drum 2 directly connected to the sub-scanning drive pulse motor 27.
One end of the wire is fixed to the first mirror stand 21, and the wire is fixed to the main body chassis (not shown) via a boule 29 fixed to the second mirror stand 24.
It has been 5a. The other end of the wire 25 is fixed via a pulley 29 to a wire tensioning tension spring 30 fixed to the main body chassis.

FIG. 2 is a diagram showing details of the pressure plate glasses 17 and 19 of the apparatus shown in FIG. 1, and f1 to f7 indicate frame image reading positions on the pressure plate glasses.

Reference numeral 15 denotes a frame mark detector, which is arranged to correspond to the reading position on the first frame side of the pressure plate glass.

FIG. 4 shows a control block diagram of the apparatus of this example, and the output signal of the human-powered device 31 and the output signal of the mark detector 15 are sent to a control circuit 32 consisting of a computer.

The control circuit 32 controls the driving of the motors 3, 4, 8, 27 and the solenoid 5.

The frame mark signal output from the mark detector 15 is counted by a frame mark counter 33, and the frame number of the currently searched image is displayed on a display (not shown).

When the image of the designated frame number is retrieved and an image reading command is input from the human-powered device 31, the -dimensional image sensor drive circuit 34 is activated and image reading is executed.

FIG. 5 shows a flowchart of the processing routine of the apparatus.

When a power switch (not shown) is turned on, the control circuit 32 (FIG. 4) sets the device to its initial state.

Next, when the operator manually enters a desired frame number from the input device 31 (step 1), the lamp 7 lights up and the upper pressure plate crow 17 is released as shown in FIG. A film feeding path is formed between (Step 2)
).

Next, it is determined whether the leading edge of the roll film F has already been wound onto the take-up reel (Step 3); if no, the motor 3 and solenoid 5 are immediately activated to wind the leading edge of the roll film F around the take-up reel. (Step 4)
.

On the other hand, if it is determined YES in step 3, the designated frame is from the first reading and position f shown in FIG. 2 to the seventh reading position f.
If the answer is No, motor 4 (reverse feed) or motor 8 (forward feed) is driven to start feeding the film, and the mark detector 15 detects the desired frame image. When it is detected that the motor 4 or the motor 8 has reached the first reading position f1, the motor 4 or the motor 8 is stopped (step 6).

If YES is determined in step 5, the pulse controller 27 is driven and the first mirror stand 21 is moved to the reading position of the designated frame image among the reading positions f1 to f7 by a preset number of pulses. (Step 7).

Next, when a reading command is manually input from the input device 31 (step 8), the upper pressure plate crow 17 is pressed against the lower pressure plate glass 19 so as to sandwich the film F (FIG. 3(b)). Thereafter, the pulse motor 27 is driven to move the first mirror stand 21 in the direction of the arrow 35 (FIG. 1) at a speed of V, and the second mirror stand 24 to move in the same direction at a speed of V/2.

As the first mirror stand 21 and the second mirror stand 24 move, the frame image illuminated by the lamp 20 and projected onto the reading surface of the one-dimensional image sensor S by the lens L is shown by the arrow 36 (FIG. 1). A sub-scanning movement is performed in the direction, and image reading is executed by main-scanning driving of the -dimensional image sensor S (step 9).

(Effects of the Invention) As described above, according to the present invention, it is possible to read a plurality of consecutive frame images by feeding the film - times, and the time required to read each frame image can be shortened. Scratches and dirt can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing an embodiment of the apparatus. FIG. 2 is a cutaway perspective view of the image reading section. FIGS. 3(a) and 3(b) are cross-sectional views of the upper and lower pressing plate crow portions when the film pressure is released and when the film is pressed, respectively. FIG. 4 is a block diagram of the control system. FIG. 5 is a flowchart of the processing routine. FIG. 6 is a perspective view schematically showing an example of a conventional device. 4----- Film feeding motor (for reverse feeding) 8-
-----Film feeding motor (for sequential feeding) 17...
...Upper pressure plate glass 19...Lower pressure plate glass 40, 41-...Mark detector 27...
...Sub-scanning pulse motor 20--Illumination lamp F--Micro film m-...
・Coma mark patent applicant Canon Co., Ltd.'$ 4 Figure

Claims (2)

[Claims] (1) A desired frame image of a roll-shaped microfilm on which multiple frame image information is recorded is read by using a frame mark detector to detect the frame mark provided corresponding to each frame on the microfilm. In the information retrieval device, the two pressure plate glasses sandwiching the roll film have a length corresponding to a plurality of frames of the roll film, and form a feeding guide for the roll film, and An information retrieval device characterized in that a mark detector is arranged on the first frame side of the pressure plate glass having a length corresponding to a plurality of frames. (2) The information retrieval/reading device according to claim 1, wherein the retrieval of each frame image excluding the first frame image among the plurality of frame images of the microfilm held between the vertical pressure plate glass is performed by moving the reading optical system. .