JPS6281165A - Film picture reader - Google Patents

Abstract

PURPOSE:To cope with various situations by providing a means commanding the read range and a means making the function of the command means ineffective to a display section of a picture reproducing device. CONSTITUTION:Each picture of frames 1a, 1b of a film F is formed on a scanning plane of a linear line sensor 6 via an image forming lens 4 and a fixed mirror 5, and when a light shield plate 14 shuts the light of a photo interruptor 13 attended with the movement of a carriage 9, the start timing signal of read scanning is generated. Further, each picture is magnified and formed also on a screen 17 via a changeover mirror 15. Linear potentiometers 21, 22, 26 and 27 are connected freely slidably along the screen 17. Cursors 18, 23 indicate a picture read start position and cursors 19, 24 indicate a picture cut position. A switch part exists at both extremes of the linear potentiometers, and when the cursor is moved at the outside of the read enable range, the controller makes the indicating function of the cursor ineffective.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an image reading device that reads image information photographed on a microfilm, and for example, an image reading device that reads desired image information from a microfilm having a large number of frames. The present invention relates to an image reading device.

[Prior art]

BACKGROUND ART Conventionally, frame images taken on microfilm are read using an image sensor, and then images are formed using a laser beam printer, an inkjet printer, or the like. In order to search for such image information, a method has been adopted in which microfilms are conveyed one after another and this is monitored on a display section.

However, even in this case, if the transport position of the microfilm or the image capturing position with respect to the film is not accurate, the image cannot be read accurately by the image sensor, resulting in the inconvenience that the image is missing when the image is formed. was occurring.

In order to eliminate such inconveniences, it is conceivable to provide a manually movable instruction member on the display section to indicate the image reading range. However, when the pointing member has a wide variety of functions, it becomes confusing for the operator.

〔the purpose〕

Therefore, the present invention provides means for selectively disabling the function of the indicating member to provide the operator with the simplest method of use.

〔Example〕

The present invention will be described below based on Examples.

FIG. 1 is a schematic configuration diagram of this type of device, centering on the image reading means.

In the figure, frames 1a and lb of film F are illuminated by light emitted from a halogen lamp 2 and condensed by a condenser lens 3. Each frame la and lb image of the film F illuminated in this way is sent to a one-dimensional line sensor 6 composed of a COD (charge-coupled device) or the like via an optical system consisting of an imaging lens 4 and a fixed mirror 5. Image is formed on the scanning plane. This one-dimensional line sensor 6 is fixed to a carriage 9 that can reciprocate while being guided by a pair of parallel guides 7 and 8. Further, since the carriage 9 is fixed to a wire lO that makes the rotation from the motor 11 a linear motion, the one-dimensional line sensor 6 scans and reads image information by driving the motor 11.

A photointerrupter 13 for detecting the start of reading scanning is arranged in the example main body of the apparatus, and when the tip plate 14 fixed to the carriage 9 emits light from the photointerrupter 13 as the carriage 9 moves, , a photointerrupter 13 generates a read scan start timing signal.

On the other hand, a switching mirror 15 is arranged between the imaging lens 4 and the fixed mirror 5, and each image of the frames la and 1b of the film F is displayed on a display means via the switching mirror 15, the projection lens 16, etc. An enlarged image is also formed on the screen 17. On this screen, a reading reference frame for half-size images and a reading reference frame for full-size images are printed. If so, the laser beam printer will read the half-size area surrounded by the reading frame (■) and print it out. On the other hand, if the recording paper is horizontal, it will read the full-size area surrounded by the reading frame (■) and print it out. A laser beam printer prints out.

Figure 2 shows an example of film photography.

Normally A4/A3 size manuscripts are l/25.6,
B5/B4 size originals are photographed on film at a 1il rate of 1722.2. The combined magnification of lens 4.16, which projects the image onto the optical screen, is X 25.6.

In other words, the film image of an A4 original is projected at its original size, and the vertical dimension of the screen frame is 297 mm and the horizontal dimension is 210 m.
M frame ■The horizontal dimension is 420 mm.

Further, the magnification of the lens 4 is 2.87 times, and an image is formed on the COD scanning plane. COD has 7p 5000bit light receiving element
They are arranged linearly at a pitch of m, and the vertical direction of the screen frame is read with 4752 bits. That is A 4/A
It is possible to print out three sizes at 16 dots/mm. The remaining bits are upper and lower margins.

Further, as shown in FIG. 3, the light-shielding position of the light-shielding plate 14 provided with the photo-interrupter 13 on the carriage 9 is spaced from the left end XQ of the screen frame by an intersection 0. This line sensor 6 starts reading scanning after scanning for 10 minutes from the signal St of the photointerchanger 13.

FIG. 4 shows a connected printer that performs recording operations based on image signals from the reading device shown in FIG. 1. The printing speed of the laser beam printer 50 is 210 mm/sec.
c, and the scanning speed V of the carriage 9 for reading is determined according to this.

In addition, the horizontal synchronization signal SP for synchronization for each line is
16X210=3360H2. The cassette installed in the laser beam printer has a protrusion corresponding to the paper size, and the microfilm M1 to M3 (7) ON/OF placed in the printer cassette insertion slot is provided with a protrusion corresponding to the paper size.
The paper size information of this cassette is obtained from the F signal.

Microswitch Ml, M2. When all M3 are ON, the controller of the playback device determines the paper size to be A4 based on this information from the printer side, selects the scanning speed v=vA of the carriage 9, and controls the carriage motor. Also, for the output of the image sensor, select the interpolation rate l according to the printer's 16 dat/mm, that is, 4752 bit/1 inch.
The information of e is 4752 bits/l i ne's V as it is.
Send it to the printer as an ideo signal.

When the operator turns on the print button from the keyboard 51, the carriage 9 starts scanning, and after the above-mentioned signal St is generated,
Horizontal synchronization signal 5 peuo minutes count for run-up period ("X
3360) After that, reading scanning is started and a video signal is sent to the printer. The reading scan uses the horizontal synchronizing signal Sp for A4 size,
After continuing to count (3360), it returns to the scanning start position and waits for the next command.

With the above sequence, the displayed image in the reading frame ■ is A.
Reproduced on 4 size recording paper. If the cassette is A3 size, reading scanning is performed for the horizontal synchronization signal A3 (6720) under the same conditions, and the display image within the reading frame (2) is reproduced on the recording paper.

In addition, B4. B5. In the case of an A4R cassette, the controller recognizes the paper size based on the cassette detection signal, and if it is a B size, the carriage scanning speed V is set to vB.
= TT7 x vA, and the interpolation rate is set to "r'□. (The run-up is 1 work x v day 3360 counts.) For A4 size vertical feed, use carriage scanning to reproduce each image.

If it is a normal film, the image will fit within this frame. However, there are cases where the required image does not fit within the frame due to misalignment of the film transport, misalignment of the photographing position of the image on the film, or the like. In this case, the cursor is used to indicate the image position. An example of outputting an image using this cursor is shown below. In addition to remedial measures such as the above-mentioned poor accuracy of the film positioning means, misalignment of the shooting position of the grip yak, etc., it is also useful for erasing unnecessary images (black frame erasing , trimming).

In FIG. 1, reference numerals 20 and 25 are guides disposed along the lower end and left end of the screen 17 so as to be perpendicular to each other.

The guide 20 has a cursor 18 with a rectangular shape and a cursor 19 formed with an acute angle for easy indication on the screen 17 as an instruction member for indicating the reading output range in the left and right direction (lateral direction). It is arranged so that it can slide freely in the left and right direction along the lower edge of the. This cursor 18 and 1
9 are so-called linear potentiometers 21 and 2 whose resistance value changes linearly, as shown in detail in FIG.
It is electrically connected to each sliding terminal of 2. Each of the linear potentiometers 21 and 22 has one end connected to the power supply Vcc and the other end grounded.

With this configuration, the linear potentiometers 21 and 22 output voltages Vte and V19 on the screen 17 that are proportional to the distance from the virtual setting position xo of the photointerrupter to the respective cursors 18 and 19. . The voltages V 18 and V 19 are the moving distance of the carriage 9 from the photointerrupter 50 that generates the reading start timing signal St! ;L1,
and AC2 (see FIG. 3), and the converted value is stored in the memory as described later.

The guide 25 has cursors 23 and 2, each of which has an acute-angled tip, as an instruction member for indicating the reading output range in the vertical direction (vertical direction).
4 are respectively arranged so as to be slidable in the L downward direction along the left side of the screen 17. The cursors 23 and 24 are electrically connected to sliding terminals of linear potentiometers 26 and 27, respectively. The linear potentiometers 26 and 27 both connect one end to the power supply Vcc.
and ground the other end.

With this configuration, the linear potentiometers 26 and 27 output voltages V23 and 24, respectively, which are proportional to the distance from the virtual position yo of the light receiving element at address 1 of the COD on the screen 17 to the cursors 23 and 24. Ru. Using the voltage V23 thus obtained, the element address (Kth) of the image sensor 6 corresponding to the position of the cursor 23 is determined as shown in FIG. 3, and the value is stored in the memory. Further, the address value (Qth) according to the voltage V 24 is similarly stored in the memory.

Additionally, there are switch regions at both ends of each of linear potentiometers 20 and 25. Readable area in the X direction (2
If you move the cursor 18.19 outside the dashed dotted line,
The controller compares the linear potentiometer output voltages, Vxl and Vx2, across the readable range. And V
When xl>VIB, vX2>v19, niha, force-nru 1
8 and 19 are disabled. This also applies to the X direction, and the area outside the readable area (double-dashed line) in the X direction is the invalid area of the cursor 23,24.

FIG. 6 is a schematic block diagram showing the control system of the present invention.

33 is a linear potentiometer that emits a signal indicating the position of the indicating member that indicates the reading output range in the horizontal direction on the screen, and voltages Vta, V19, V23, V24 are generated depending on the positions of the indicating members 18, 19, 23, 24. is sent to the controller 30. 33 is a computing unit;
It operates according to instructions from the controller 30 and returns calculation results.

The operation of the controller 30 related to the area designation operation using the cursors 18, 19, 23, and 24 will be explained. Each cursor can be moved to any position by the operator.1 For example, when the print button is pressed, the controller changes the cursor position to the scan count number of the image or the element address of the image sensor according to the procedure shown in FIG. Convert to number.

However, if V 18 and V 19 corresponding to the positions of cursors 18 and 19 are smaller than Vx1 or larger than Vx2, respectively, the corresponding cursors are invalidated. Also,
V23 and V2 corresponding to the positions of cursors 23 and 24
If 4 is smaller than vyl or larger than VF6, the corresponding cursor is invalidated.

Among these cursors 18, 19, 23, 24,
The direction cursor 18 and the X direction cursor 23 both indicate the image reading start position, and 19° 24 indicates the image cut position.

An example is given below. In addition, the recording size below is A4.
shall be.

(1) Instruction function of cursor 18 or 23 alone (19,
24 is invalid) Note that both the X direction and the X direction are functionally the same, so the explanation will be based on the X direction (cursor 18).

The controller 30 outputs the signal S based on the value statement 1 converted from the output V18 from the linear potentiometer 33.
The count (X3360) of the run-up horizontal synchronizing signal L Yu Sp after the occurrence of t is calculated.

A When the print button is turned on, the carriage 9 is scanned by the motor 11, and after counting the value calculated above SP, A4 minute reading scan (as shown in Figure 33 (1), the cursor 18
A reproduced image corresponding to the size of the frame ■ is obtained by being shifted by the position of the cursor from the image end indicated by .

In the X direction, by changing the reading start address of the CCD according to the cursor 23 and outputting 4752 bits (A4), a reproduced image with the frame 2 shifted vertically as in the X direction can be obtained.

(2) Instruction function of cursor 19 or 24 alone (18,
23 is invalid) This is also a joint function in the x and X directions, so it will be explained in terms of the X direction (cursor 24).

The controller 30 determines the corresponding element address Q of the image sensor 6 from the output V24 from the linear potentiometer 33. When the print button is turned on, the controller 30 sends information on the S-th to Q-th element addresses corresponding to the bottom edge of the frame to the printer 32, as shown in FIG. 7(2).

The image is played back with the image corresponding to the bottom edge of the frame as the bottom edge of the paper.

Here, in the case of S-Q+1>4752bit (A4), it does not appear on the image even if it is specified with the cursor 24, that is, the image is output based on the bottom edge of the frame (left edge in the X direction), This cursor 19.24 realizes an image cutting function that cuts the rear part.

(3) Direction function using both cursors 18, 19 or 23, 24 Furthermore, this is also a joint function in the X direction and the X direction, so the X direction (
This will be explained with cursors 23 and 24).

The controller 30 determines the corresponding element address K 23 Q 24 of the image sensor 6 from the outputs V 23 and V 24 from the linear potentiometer 33.

Then R = (4752-(23+1 to Q24-))/2
(If the numbers in parentheses are odd, either round up or down) The printer 32 receives the white signal of Rb1t, the image signals of 23 to Q24, and the white signal of Rb1t (by rounding up or down) 1 error)).

With this control, the margins of the image are made even on the top and bottom in the X direction, and a centering function is realized.

The same applies to the X direction. K. Extracts the image of the designated area of the cursor 18°19, centers it, and outputs it.

However, in the calculation in the X direction mentioned above, 4752- (Q24-
When 23+1)<O, do not center,
The K23 sends 4752 bits of image information to the printer 23.

(4) Special usage of functions using cursors 18 and 19 or cursors 23 and 24.

Instead of extracting the area indicated by the cursor and recording it as is, the magnification ratio is calculated based on the paper size of the printer and the range indicated by the cursor, as shown in Figure 7(d), and the area is indicated to fill one paper size. This is a method of reproducing a range image at variable magnification. In this mode, an automatic magnification change key is provided on the keyboard to distinguish it from the case shown in FIG. 7(3) described above.

As explained above, the cursor can be used to perform soft cutting, centering, and automatic scaling of the image.

If you do not want to use these image shift, cut, centering, and automatic scaling functions, position each cursor at both ends. Then, once the controller 30 detects this value of the potentiometer 33, it disables its corresponding cursor function. In this case, the image within the frame ■ or ■ is output. This cursor disable switch may be provided on the keyboard. Alternatively, the process may be executed using a switch that detects that the cursor is outside the area, without depending on the output of the potentiometer 33.

It should be noted that each function of the cursor shown in the text is just one example, and each function can be used in various ways. Also, the number of cursors is not limited to this, and the cursor function disable switch may also be disabled with one switch instead of corresponding to each cursor.
You can use T to move the frame position with the mouse instead of the cursor.
It is also applicable to reading mm films, X-ray films, etc.

〔effect〕

As explained above, since the display section of the microfilm image reproducing device is equipped with an instruction means that can specify the reading range and has a means for disabling the function of the instruction means, it is easy for the operator to control the reading range in various situations. A device that can be used even under

[Brief explanation of drawings]

Fig. 1 is a block diagram of a microfilm reading device to which the present invention is applied, Fig. 2 is a diagram showing the relationship between the microfilm and the image, Fig. 3 is a diagram showing the relationship between the image sensor and the moving position, and Fig. 4 is a configuration diagram when a printer is connected, No. 5
The figure shows the relationship between the screen and the cursor, Figure 6 is a block diagram showing the configuration of the control circuit, Figure 7 is a diagram showing the image playback state, and Figure 8 is a flowchart showing the procedure related to the desired area instruction. 6 is an image sensor, 13 is a photointerrupter, 17 is a screen, 18, 19, 23, and 24 are cursors, and 30 is a controller. Figure 7 Figure 5

Claims (2)

[Claims] (1) an image reading means for reading an image recorded on a film; a display means for displaying the image on the microfilm; an instruction means for instructing the reading position or range of the image displayed on the display means; and the instruction. 1. A film image reading device comprising: switching means for switching between enabling and disabling the indicating function of the means. (2) A film image reading apparatus according to claim 1, wherein the switching means performs a switching operation depending on the position of the indicating means.