JPH0723191A - Image processing device - Google Patents

Abstract

PURPOSE:To output the recording image of an image recorder in spreading sheet size (for the portion of two pages) such as newspaper and to superimpose the image in a main scanning direction in a device when the output is issued in a system in which only image data of A2 size can be transmitted from a host device (space transmission, etc.). CONSTITUTION:A right image of spreading sheet size is stored in the high-order address of an image memory 12 from a host device. Thence, a middle image of the spreading sheet size is received from the host device, and a signal can be generated by shifting an enable signal that is an effective signal in the unit of one line by an enable shift circuit 11 corresponding to quantity to be superimposed. The image data stored previously is read out the timing of the shift signal, and the image data are superimposed by a superposition processing circuit 10, and is stored again in the high-order address of the image memory. Finally, a left image of the spreading sheet size is received from the host device, and the image data is superimposed by a similar method, then, it is stored in the image memory 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus,
Particularly, it relates to writing of image data and overwriting processing.

[0002]

2. Description of the Related Art Generally, image processing apparatuses are widely used in companies that issue publications such as a newspaper company and a printing company, including a facsimile. Among them, a newspaper company outputs the image data for one page (A2 size) received from the line as it is for one page. That is, the image data for one page is stored in the memory in the image processing apparatus, and the image data is read from the image memory for each line of one page.

[0003]

However, the above-mentioned method has a drawback in that it is not possible to output a two-page spread (two pages) of image data as one sheet, like newspaper. Also,
For example, in an A2 version transmission system such as a newspaper,
If you want to record one page of the entire spread, that is, A1 version,
There is a drawback that image data cannot be recorded at the boundary between the first and second pages of A2 size.

An object of the present invention is to provide an image processing apparatus which eliminates these drawbacks.

[0005]

An image processing apparatus according to the present invention includes an overlay processing circuit for overlaying two types of image data, an enable shift circuit for shifting an enable signal which is an effective signal for one line, and image data. An image memory for storing, a write counter circuit for specifying an address for storing image data, a read counter circuit for specifying an address for reading image data, and a CPU circuit for controlling each circuit are provided. It is characterized by

Further, according to the present invention, a plurality of pieces of image data of a certain size are received, the pieces of image data are shifted in the main scanning direction or the sub-scanning direction and overlapped on the image memory. Outputs one continuous page of image.

[0007]

FIG. 1 shows an embodiment of the present invention.

This image processing apparatus includes an overlay processing circuit 10 for overlaying two types of image data, an enable shift circuit 11 for shifting an enable signal which is an effective signal for one line, and an image memory for storing image data. 1
2, a write counter circuit 13 that specifies an address for storing image data, and a continuous read counter circuit 14 that specifies an address for reading image data.
And a CPU circuit 15 for controlling each circuit.

For the sake of simplicity, in this embodiment, as shown in FIG. 2, a case will be described in which three pieces of A2 size image data are received and A1 size (spread) image data is output. Also, the received image data is A shown in FIG.
One size should be received sequentially from the left side.
Of course, the same method can be used even if other numbers and sizes are different. Further, regarding the overwriting, although the overwriting in the main scanning direction is shown, the overwriting can also be realized by the same method.

FIG. 3 is a diagram for explaining the operation of the enable shift circuit.

The operation of this embodiment will be described with reference to FIG.

First, in the reception of the first image, the image data is received from the image data input terminal 101 with the function of the superposition processing circuit 10 turned off under the control of the CPU circuit 15 and stored in the upper address portion of the image memory 12. To do. At this time, while the function of the enable shift circuit 11 is turned off under the control of the CPU circuit 15, a valid signal for one line (hereinafter referred to as an enable signal) is simultaneously received from the enable signal input terminal 102 to operate the write counter circuit 13. Used for timing.

Next, when receiving the second image, the image data of the first image is read from the image memory 12 in the state in which the function of the overlay processing circuit 10 is turned on by the control of the CPU circuit 15, and the overlay processing circuit 10 reads it. The images are superposed on a line-by-line basis and stored again in the upper address of the image memory 12.
At this time, in the enable shift circuit 11, from the enable signal sent from the enable signal input terminal 102,
The enable signal, which is sent from the shift amount designation input terminal 103 and is shifted by the designated shift amount, is supplied to the read counter circuit 14. By doing so, as shown in FIG. 3A, the first image data and the second image data are overlapped and stored in the image memory 12 in a shifted form.

Similarly, the image data for the third sheet is also shown in FIG.
As shown in FIG.
Sequentially stored from address 0. Here, the image memory 12
In this case, A1 size image data is stored.

After all the receptions are completed, the read counter circuit 14 is set to 0 and sequentially read out, and the image data of A1 size is processed into the superimposed image data output terminal 1.
It can be output from 04.

As described above, according to this embodiment, the image on the right of the spread size is stored in the upper address of the image memory 12 from the upper device. Next, the image in the middle of the spread size is received from the host device, and the enable shift circuit 11 shifts the enable signal, which is an effective signal for each line, by the enable shift circuit 11 to generate a signal. The previously stored image data is read out at the timing of the shift signal, and the overlay processing circuit 10 overlays the image data and stores it again in the upper address of the image memory. Finally, the image on the left of the spread size is received from the upper device, and the image data is superposed and stored in the image memory 12 by the same method. Then record. Note that the number of overlapping may be three or more.

[0017]

As described above, according to the present invention, a receiving system of a size that is twice the size that can be output on the existing system without changing the existing system, for example, A2 size receiving system, A1 size (spread size) The image data of can be recorded and output. In addition to simply outputting the image data of double size by combining the two pieces of image data,
It is possible to perform superposition, and it is possible to output image data of a size other than the specified size.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of overwriting.

FIG. 3 is a diagram illustrating an operation of an enable shift circuit.

[Explanation of symbols]

 10 overlay processing circuit 11 enable shift circuit 12 image memory 13 write counter circuit 14 read counter circuit 15 CPU circuit 101 image data input terminal 102 enable signal input terminal 103 shift amount designation input terminal 104 overlay processed image data output terminal

Claims (2)

[Claims] 1. An overlay processing circuit for overlaying two types of image data, an enable shift circuit for shifting an enable signal which is an effective signal of one line, an image memory for storing image data, and an image data storage. An image processing apparatus comprising: a write counter circuit that specifies an address for reading, a read counter circuit that specifies an address for reading image data, and a CPU circuit that controls each circuit. 2. A plurality of image data of a certain size are received,
The main scanning direction or the sub-scanning direction,
2. The image processing apparatus according to claim 1, wherein the image processing apparatus outputs a continuous one-page image at the time of recording and outputting by shifting and superimposing on the image memory.