JPS60141068A - Picture reader - Google Patents

Abstract

PURPOSE:To prevent repeated reading and omission of reading of a picture by providing a means that makes picture reading every block of specified size and a means that indicates picture area read by above-mentioned reader. CONSTITUTION:This reader is placed on an original to be recorded. When a record input switch 20 is made off state, and a copy button 16 is made on, a plane mirror and a slit move on the original and scanning of the picture is performed. It is confirmed so to whether desired picture is obtained or not by displaying the beginning and end of the original on a liquid crystal display board 18 by operating a diplay change-over switch 19. Picture detection is made by making the record input switch 20 on and depressing a copy button 16, and all picture signals are recorded in a memory element 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an image reading device, and particularly to a portable image reading device that reads an image for each predetermined block.

[Prior art]

Conventionally, various devices that read image information using line sensors or contact sensors have been reported.

By the way, when reading a document placed at an arbitrary position in close contact using the sensor, a method has conventionally been used in which the reading device is fixed and the document is moved at a constant speed and read by a factor z'). i am doing However, in the case of such a device, it is difficult to record a thick original such as a book, and the disadvantage is that the device becomes large and expensive, making it difficult to realize portable image recording. Therefore, a method of fixing the document and moving the reading device has been considered. In this case, there is no need for a document feeding device, but if the reading device moves at any speed and in any direction,
Problems such as double reading and missing reading may occur, and the speed of movement of the reading device. Regulation in the +111 direction was required, and as a result,
This results in an increase in the size of the device, making it unsuitable as a portable image recording device.

By the way, as a method for eliminating the problems such as double reading of an image and omission of reading, etc., a method of recording position information superimposed on the image information can be considered. In this case, it is possible to do this by interposing a transparent sheet on which position information (I) is written in advance between the original and the recording device, and moving the reading device. The 1L
i-recording is also possible.

Image 11'? In order to superimpose and record information and position information, it is necessary to read both information and image information as well as position information (X, Y directions), so multiple notes 1. . requires the content [I4.

SUMMARY OF THE INVENTION In view of the above point 73, an object of the present invention is to eliminate the drawbacks of the portable image reading device and to enable easy editing.

Furthermore, it is an object of the present invention to prevent double reading and reading through of images.

Furthermore, the present invention can confirm the readable image area. 1
7. The purpose is to make it possible.

That is, a portable image reading device having a light source tray for document illumination is characterized by means for reading an image for each block of a predetermined size, and for assigning an editing address to the block read by the reading means. That is.

Further, in a portable image reading device having a light source for illuminating a document, means for reading an image for each block of a predetermined size, and an image area previously read by the reading means and an image area to be read from now. and a means for determining.

Further, the portable image reading device that includes a light source for illuminating a document has means for reading an image for each block of a predetermined size, and means for displaying an image area read by the reading means. .

[Example J An embodiment of the present invention will be described below with reference to the drawings.

Part 1 of Figure 1 shows an example of the use of the device of this embodiment v111. Second
Figures 3 to 3 are front views of this embodiment, and 2 is the drive motor which is the drive motor that scans the IO'i optical system, 2 is the power battery which is the l'llll15t of this device, and 3 is the power supply battery. A storage element for recording image information and sound, a control display unit for controlling display by various motions, a photoelectric conversion element for converting 4D image information into a '11L signal V, 5
is a lens for forming an optical path τ image on the photoelectric conversion element 4; 6a to d are reflecting mirrors for guiding all image information to the lens 5; 7 is an LED lamp for illuminating the original to be read;
8 is a slit for guiding the image information to be read to the mirror 6a, 9 is a glass plate for holding down the original, IO is the original to be read, 11 is a rotating roller for moving the device on the original, 12.13ii roller 11 The light source and light receiving element of the encoder for counting the 1 convergence of 23)
25 is an optical home position sensor, which is detected by a photointerrupter.

14 is a spring for regulating the rotation of the roller 11; 5 is a wire for moving the optical system; and 15-1 is a guide booby for the wire 15.

Figure 4 is an external view of this device, 16 is a copy button, ]7
is a movement stop lamp that indicates that the roller 11 has rotated a number of times, 18 is a liquid crystal display board that displays the upper and lower parts of the document to be read, 19 is a switch that changes the display on the liquid crystal display board 18, and 2o is a display of image information. 21 is a recording output switch that specifies the output of image information; 22 is a switch for inputting document addresses for each block, switching output, and specifying addresses;
26 is an address display.

In the above configuration, when recording an image, the present apparatus is placed on top of the document on which the image is to be recorded. Recording input switch 20
When the copy button 16 is turned OFF'F and the copy button 16 is turned on, the LED lamp 7 that illuminates the original is lit, and the LED
A plane mirror 6a and a slit 8, which are part of the optical system that is the same unit as the rung 7, move over the document, and the light reflected from the document by the LED rung 7 is reflected by the plane mirrors 6a, 6b, 6b of the optical system.
'L electric conversion element 4 via 6c, 6d and the condensing lens 5
The image will be scanned. Then, whether or not the desired image has been obtained is confirmed by operating the display changeover switch 19 to display the beginning and end of the document on the liquid crystal display board 18. Display changeover switch 19f: T
OP VCj-#l-ti 1 Kyo (Takatsuno 1 (first, 13
01" TOM [Sil-- displays the lower part of the document. In this case, the signal detected by the photoelectric conversion element 4 is recorded only over a certain width at the front and rear edges of the document. The part between , - jin is not recorded, but this record is erased when the recorder's 4-touch 20 is turned on.Next, when recording a manuscript, after the procedure for confirming the recording area of niJ, Turn on the recording output switch 20 and press the copy button 16 (z to perform image detection as described above.
All image 1 image number 1- is recorded in memory element:3. Also,
Previous Check the image area: Even if you do not check, if the operator determines that the recording area has been sufficiently covered, turn on the recording area from the beginning and check the recording area for each scan. May be recorded. Also, image description fk t'+i
When the address input capo 22 (4-IN) is set to J, an address number is given to the recorded image and recorded in ft, and at the same time the number is output to the address display 26. When outputting an image signal, it is possible to rearrange the image 1 and re-edit the segmented and recorded image, making it possible to record even originals larger than the recording area of this image recording device at one time. In addition, when recording an original larger than the recording area for one time as described above, the present recording device is moved in pressure contact with the original, and the number of revolutions of the roller 11 is adjusted by using the light source 12 and the light receiving element 13f. It counts and detects the moving distance of the device on the document, and when it has moved a predetermined amount, it displays it on the moving path f lamp 12 to prevent the recorded images from overlapping and skipping, and by rearranging and re-editing the original document. In addition, by providing a motor to move the original, the water device can be completely self-propelled and automatically stop when it has moved a certain amount in the vertical or horizontal direction. It is possible.

In the above image recording device, a mirror (5a) is used.

Slit 8. All recording is performed by the light source 7 scanning the document, and the light receiving element 4 is placed in this area. Lens 5° slit 8.
It is also possible to arrange the light source 7 and scan the document.

In addition, the light-receiving element used in the two examples 4V and A1J is a line sensor, but by using a large-area flat light-receiving element, it is possible to expose the original once without running it across the original. Recording is also an option.

Figure 5 is a block diagram showing the operating sequence of this device.
A storage unit is configured centered around the PU27. PO~P, input port of CPU27, Fo -F? b-x output port. 1
-26t'i, 21'y, I to i, represent the same numbers in Fig. '444. 27V, KCPU, 2H
29 is a CCD drive clock generator for agitating the CCD 4, and 29 is a CCD drive clock generator for agitating the CCD 4.
ccvr/live clock busy control i+1 gate,
31 &I CCI] 41r) A converter for A/IJ conversion of the outputs; 32 is a signal processing circuit for storing the output of the A/D converter in memory; 33 is a signal processing circuit for storing image information; A VRAM 34 for storage is a movement clock circuit for generating crop pulses during movement of the image reading device, and is composed of a rotating roller 11, a light source 12, and a light receiving element 13. The following description will be made according to the chart in the block diagram r in FIG. 6.

First, when Ichihara is turned on, the optical system is returned to the home position, the counter and flag 1 are cleared, and the LED
7. Initialize the CCD 4 to turn it off (S)].Next, press the recording output switch 21 (SW21).
) is ON a i%, that is, whether there is an input in the input port P9 of the CPU 27 (S2).

5W21 executes a routine to output the image information stored in the memory to an external device (S3), 3
5W21 is OFF, terminal 1). Picture fW
? ijr.

When the control device 11 indicates the movement, the signal indicates the manual movement. It is determined whether or not (S4). The output of a monostable multivibrator 28 connected to a movement clock circuit 34 for counting the rotational speed of the rotating roller is connected to the PG. This monostable multi is retriggerable, so even if you stop it once while moving, it will still cover the distance. The movement clock circuit 34 includes a light source 12 and a light receiving element 13, and generates pulses as the image reading device moves. Therefore, if the image reading device is moving, a signal indicating that it is moving is input to P.P.

When a signal is input to , it is determined whether or not there is a clock pulse from the movement clock circuit 34 (815,4 Since it is moving and a movement clock is generated, the movement distance counter is counted every time a clock is generated. count amplifier 5
I6), the distance traveled is displayed on the LEI) of the address display 26 (S17). When the image reading device moves for one reading width, the movement path J” LED 17 lights up (81
8.19). Also, if the speed moves to 8th speed or higher, a warning may be issued.

After reading the image of l block by the above operation,
Even if the image reading device is moved, the moving distance is counted, so double reading and omission of images can be prevented. and CCI)
The VRAM counter indicating the position of the image information to be read in step 4 in the sub-scanning direction (indicating the cross-line of the document) and the copy flag indicating that copying is in progress are reset, and the optical system is activated using the home position detection sensor 25. It is left in the state of being returned to the home position (820). In addition,
By setting the time constant of the monostable multivibrator 28, it is possible to cope with slow moving speeds.

If the image recording device is not in motion, press the recording switch 2.
0 (SW20) is 0NKn, but the terminal pH,
! : Judgment (s5). 5W20 y5Z OFF
If a is reached, the "pre-scan routine" described below is entered. Check whether the copy button 16 (SW16) is ON or not by checking the terminal PajD (s6), 5W16 is OFF.
&Raba returns to S2, ON'lx and others move end LED 17
to 0FFL and reset the distance counter (s7). Display changeover switch (SW19) to specify the leading or trailing edge of the image.
) is judged from the terminal P3 (s8), and if it indicates the edge of the image stage, the optical system is moved (s9). If it shows the top of the image, move it to the home position. To move the optical system, after turning on the optical system drive motor 1, the amount of movement is detected by inputting and counting pulses from the pulse encoder 24 from terminal P1o, and when a predetermined amount of movement is reached, the motor l'lr is turned on. .

It is executed by turning it off. Further, from the terminal F1, the image reading LEI) 7k ON L and the CCD drive clock 29 are connected to the terminal F. Each pixel of the CCD 4 is read out as serial data by controlling the gate 30 using the output from the gate. This data is converted into A/D by the A/D conversion circuit 31.
#'L is further processed by the signal processing circuit 32.
SiteXVRAM 33 VC is loaded. VRA
The address of M33 is the VRAM counter 33 mentioned in +iiJ.
It1VR is calculated using the page counter value described later and the CCD drive clock 29 input to the terminal P.
At the same time as output to AM33, ccD drive clock 29 't' same XJJt (!Nil (SIO, II)
. After inputting one line of data memory V on CCD4, V'r1. The optical system is moved by one line using the same operation as described in I (512), and the image signal is further read by the CCD 4. After performing the above operations for all four lines (S13), the image data 'r for one line is transferred to the memory of the LCD driver (514), and after post-processing (S20) is performed, the process returns to S2.

The recordable area of the image can be known by displaying the leading and trailing ends of the image on the LCD 18 in the above-mentioned IJ [8] is the ``pre-scan routine''.

Next, when the recording input switch 20 (8w20) is on, refer to the previous H['2 copy flag, the copy flag is off, and 5W16 is off! et al. (S 21.22)
, return to S2. When the copy flag is off and 5w16 is turned on, the movement end lamp 17iOFFL and the distance counter 26 (address counter) are reset 523.
), Copy Flag'& ON Shiku 524), Atto L/
Switch I10 Switch yf22 (SW22) status in P4
Judging from this (525), if the address is IN, an editing block counter to be described later is incremented by one (826), and then the block counter value is input to register A (S27). Also, SW z 2 OUT o state F
If M, register AK■ is input (S28). Also, 5W
By inputting a block counter value at the beginning of the image information while 22 is in the IN state, editing such as rearranging the image information input for each block later using a host computer or the like becomes easier. For example, it can be edited as shown in Figure 8iS7. (1) is a read image, and (2) is an output image. 1~
The No character of 8 is a block counter, and if you read it in the order of 1 to 8 Pro Nok counters, each block will be displayed on the host computer? r, If: can be changed and output as in (2). It is also possible to incorporate images from other manuscripts. If 5W22 is in the OUT state, 00 is recorded at the beginning of the artist information, and by recognizing 00, it is identified that the image information is not to be edited.

Meanwhile, the address of the block in the VRAM 33 is calculated from the page counter value (829), and the value of register A containing the block counter value is transferred to the memory (530).
), the address of the VRAM is incremented by one in order to store the image data (831), and the block counter value is displayed on the address display 26 (832).

When the copy flag becomes 0NK7, the next block image recording is executed. In the same way as in the previous scan routine, turn on LED 7 and CCD 4, and read one line of image data (r) while counting the VRAM address.
: After entering JIy (S33), turn on the motor l to move the element by one line (834), and increment the VRAM counter by one, which indicates the line of the VRAM block (S35). . Then, it is determined whether the contents of the VRAM counter are within one block (836),
If the number exceeds l blocks, the page counter is incremented by one (537), and post-processing (S20) is performed. If it is within one block, the process returns to S2, but if the settings of the switches have not been changed at that time, image capture by COD is immediately continued. However, before the recording of one block of images is completed, the switches may be operated again, or the
1! (2) When the image recording device is moved, the image data being recorded is canceled. Then, when passing through S21'e again, the copy flag has already been set, so
Jump to S33 and do not convert address number etc. to Id K.

In the above embodiment, the image information is stored in the image reading device.
Although it had RAM, it is possible to store a large amount of image information by moving this VRAIVI to the host computer and sending the output from the image reading device to the host computer via wired communication using a code or wireless communication using electromagnetic waves. You can also do it.

〔effect〕

As explained above, according to the invention, since image reading is performed for each block of a predetermined size, it is possible to read a document of any size, and even documents such as sheets and books can be read.

Since the image area to be submitted and recorded is displayed and discriminated, double reading and omission of I-prints can be prevented even in large-area originals.

Also, read No. 1. Since an address is assigned to each block, simple editing of the image can be done.

[Brief explanation of the drawing]

Figure 1 is a diagram showing an example of the use of a portable internal one-elephant reader;
Figures 3 and 3 are vertical views of the portable image reading device;
Figure 5 is a perspective view of the entire portable image reading device; Figure 5 is a circuit block diagram of the image reading device; Figure 6 is the operation sequence of the image reading device 4;
FIG. 7 is a diagram showing an example of editing image information. In addition, in the figure, 5 is a control display unit, 4 is a photoelectric conversion element,
16 is a copy button, 18 is a liquid crystal display board, 20 is a recording input switch, 23 is a pulse encoder, 26 is an address display, 27 is a CPU, 3! . is VRAM. Patent applicant Canon Co., Ltd. No. (1) 'V stomach ('l)

Claims (1)

[Claims] A portable image reading device having a light source for illuminating a document, which includes means for reading an image for each block of a predetermined size, and means for displaying an image area read by the reading means.