JPH0294866A - Picture reader - Google Patents

Abstract

PURPOSE:To attain less buffer capacity and the picture processing in a real time apparently by storing an output picture data of the 1st member to be read into a buffer tentatively and outputting the result while the 1st picture data is overlapped onto an output picture data of the 2nd member to be read. CONSTITUTION:A terminal from which a picture data being the result of reading the 1st original 110 is outputted among output terminals of a picture read section 131 is connected to an input terminal of a buffer 1, and the terminal from which a picture data being the result of reading the 2nd original 120 is outputted is connected to one input terminal of an OR circuit 2. Then the output of the buffer 1 is connected to the other input of the OR circuit 2. The read of the 2nd original 120 is started and the picture data is being inputted to the one input terminal of the OR circuit sequentially. Moreover, under the control of a control section 3, the picture data stored in the buffer 1 is read and inputted to the other input terminal of the OR circuit 2 while taking the synchronization. Thus, the OR processing (addition processing) is implemented in the OR circuit 2 and the picture data being the overlapping between the output picture data of the 1st original 110 and the output picture data of the 2nd original 120 is outputted.

Description

Detailed Description of the Invention: "Industrial Application Field" The present invention relates to an image reading device, and in particular, to reduce the amount of memory used when obtaining a "superimposed image" in which two images are superimposed. The present invention relates to an image reading device that can perform processing in real time.

``Conventional Technologyj'' For example, in order to promote product sales, a business machine sales company may hold an exhibition of new products and distribute information sheets to customers.

FIG. 4 shows an example of such a guide. This invitation letter 101 is a vertically long version of 85th edition, and the addressee, ``D Shoji General Affairs Department,'' is written in the area indicated by the code 102 at the top, and below that, ``I wish your company continued prosperity.''・・・・・・
"..." is printed in a standard pattern, and below that is written "September 1, 1986."

In such a notice 101, except for the address 102 and the year, month, and day numbers 103, 104, and 105, the information is in a fixed format, and the text is the same for all customers.

Therefore, for example, a first manuscript 110 with text in a fixed pattern as shown in FIG. 5(A) and a second manuscript 120 rewritten according to the customer as shown in FIG. 5(B) are prepared. If these are then superimposed by appropriate means, it is possible to create invitations for a large number of customers with different addresses, etc.

Regarding such superimposition means, for example, Japanese Patent Application Laid-open No. 62
There is a description in the publication No.-172864. In this publication, as shown in FIG.
10 and a second original 120 are placed side by side, and an image reading unit (not shown) is scanned in the main scanning direction and the sub-scanning direction shown by the arrows to read the original.

As shown in FIG. 7, among the image data read by the image reading unit 131, the image data corresponding to the first original 110 is stored in the first buffer 133, and that of the second original 120 is stored in the first buffer 133. 2 buffer 134.

The image data stored in the first and second buffers 133 and 134 is transferred to an OR circuit 135 under the control of the control unit 132.
By superimposing them as images and outputting them, it is possible to obtain a superimposed guide as shown in FIG. 4, for example.

``Problems to be Solved by the Invention'' By the way, with the means shown in Figures 6 and 7, all the read image data is stored in a buffer, so the larger the original, the more space it takes. Moreover, since the image data is temporarily stored in the buffer and then output as superimposed image data under the control of the control section, it has the disadvantage that it cannot be processed in real time.

The present invention has been made in view of the above circumstances, and its purpose is to provide an image reading device that can reduce costs by reducing the amount of buffer used, and can perform image processing in real time. .

"Means for Solving the Problems" The present invention includes an image reading unit that reads character images, etc. drawn on first and second members to be read, and a first member to be read read by the image reading unit. A buffer for temporarily storing first image data, which is the output image data of an adder that inputs the first image data stored in the buffer and inputs it to the other input terminal; The system is equipped with a control unit that controls the image data to be supplied to the adder, and controls the image data to be superimposed and output from the adder.

By doing this, only the first image data is stored, so the buffer capacity is small, and the second image data is not stored in the buffer (it is output as is, so it appears to be in real time). It becomes possible to perform image processing.

"Example" Next, the present invention will be explained based on illustrated embodiments.

FIG. 1 is a brochure diagram of an image reading device showing an embodiment of the present invention, FIG. 2 is a diagram showing the scanning direction when two originals are placed side by side, and FIG. It is a flowchart showing the operation of the reading device. In addition, in the above figures, the same reference numerals are given to the members that have already been explained, and repeated explanations are avoided.

As shown in FIG. 1, on the output side of the image reading unit 131, a terminal for outputting image data (indicated by symbol A) obtained by reading the first original 110 is connected so as to be input to a buffer l; Image data obtained by reading the second original 120
A terminal for outputting the signal (denoted by reference numeral B) is connected so as to be input to the input terminal of the OR circuit 2, which is an adder. The output side of the buffer l is connected to the other input terminal of the OR circuit 2.

Further, one control line of the control section 3 is connected to the image reading section 131, and the other control line is connected to the buffer l.

Next, the operation of the image reading apparatus configured as described above will be explained with reference to the diagram showing the scanning direction for the document shown in FIG. 2 and the flowchart shown in FIG. 3.

As shown in FIG. 2, first and second originals 110 and 120
are placed next to each other (.Then, the control unit 3
First, the image reading section 131 is operated under the control of
Main scanning is performed in the axial direction (vertical direction in the figure) and reading of the first original 110 is started (step ■). Through this main scanning, the first original 110 is sequentially scanned and read in the Y-axis direction, and when the first scanning in the Y-axis direction is completed, it is sub-scanned in the first X-axis direction by an appropriate means.

During this main scanning in the Y-axis direction, image data 8 is output from the image reading unit 11131, and is input to the buffer 1 and stored therein (step 2).

Then, the second main scan in the Y-axis direction is performed at the position after the first sub-scan in the X-axis direction, and when this is finished, the second
The second sub-scanning in the X-axis direction is performed, and thereafter the scanning in the X-axis direction and the X-axis direction are alternately repeated, and the first original 11
0 is read, and during the reading, image data 8 is sequentially output. In this way, when the reading of the first original 110 is completed, the image data A
are all stored in buffer 1 (step ■
:Y).

Next, reading of the second original 120 is started (step ■), and in this case, the image data, which is the output, is sequentially input to one input terminal of the OR circuit 2 (step ■).
.

On the other hand, under the control of the control unit 3, the buffer 1
The image data stored in is read out and inputted to the other input terminal of the OR circuit 2 while synchronizing it (step ■
). Then, OR circuit 2 performs OR processing (addition processing)
is performed (step ■), and image data in which the output image data of the first original 110 and the output image data of the second original 120 are superimposed is output (step ■). In this way, the second original 120 is read (in the meantime, the image data of the first original 1NO is added in real time, and the reading of the second original 120 is eventually completed (
Step ■).

For example, by inputting the image data output in step (2) into a copying machine, it is possible to obtain a superimposed guide as shown in FIG.

It is also possible to display the above-mentioned image data on a CRT, etc., and it is also possible to transmit the data to other servers, etc. by applying Ethernet or other networks or ANC local area networks. .

[Effects of the Invention] As described above, according to the present invention, only the memory for storing image data obtained by reading the original document is needed for the first original document, so that costs can be reduced.

Furthermore, since the superimposed image data is output while the second document is being read, image processing can be performed in what appears to be real time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an image reading device according to an embodiment of the invention, FIG. 2 is a diagram showing the scanning direction in the image reading device of the invention, and FIG. 3 is a diagram showing the operation of the image reading device of the invention. Flow chart, Figure 4 is a diagram showing an example of a document created by overlapping, Figures 5 (A) and (B) are diagrams showing the above document broken down into a fixed form part and a variable part, Figure 6 7 is a diagram showing the scanning direction of a conventional image reading device, and FIG. 7 is a professional diagram of the conventional image reading device. DESCRIPTION OF SYMBOLS 1... Buffer, 2... OR circuit (adder), 3... Control unit, 110... First original (first to be read) Element),
120... Second original (second member to be read) 1
31... Image reading section. Applicant Fuji Xerox Co., Ltd.

Claims (1)

[Claims] An image reading unit that reads character images, etc. drawn on first and second members to be read, and an image reading unit that is output image data of the first member to be read read by the image reading unit a buffer for temporarily storing the first image data; and second image data, which is the output image data of the second member to be read read by the image reading section, are input to one input end, and the buffer an adder that inputs first image data stored in the buffer into the other input terminal; and controls the first image data to be stored in the buffer, and supplies the second image data to the adder. 1. An image reading device comprising: a control section that controls the image data so as to overlap the image data and output the superimposed image data from the adder.