JPS59128862A - Magnifying and reduction device - Google Patents

Abstract

PURPOSE:To provide a picture memory for one page's share only by providing the picture memory for one page's share storing a picture data before magnification at the magnification, and storing the picture data after reduction at the reducing conversion. CONSTITUTION:A selection signal goes to L at magnification, data selectors DS1, DS2 output a signal inputted to a terminal A to a terminal Y and a data selector DS3 outputs a signal inputted to a terminal B to the terminal Y. Thus, a picture memory 11 and a converting processing circuit 12 are connected between an input device 13 and an output device 14 and the picture data read by the device 13 is inputted to the memory 11. When the input for one page's share is finished next, the picture data is outputted from the memory to the circuit 12 and the picture data processed for conversion is outputted to a device 14. The selection signal goes to H conversely at reduction, and the connection between the memory 11 and the circuit 12 is reversed from that at the magnification. Thus, the read signal enters the circuit 12 and processed, then stored in the memory 11 and outputted to the device 14.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an enlargement/reduction method that enlarges or reduces image data given from an input device and supplies the image data after the conversion to an output device. Relating to a reduction device.

(Prior art) When trying to realize enlargement or reduction conversion in a system without image memory, Figure 1 (when enlarged to 3/2 times) and Figure 2 (when reduced to 273 times) are shown. As shown in Figure 3, it becomes necessary to provide a standby time for the input/output device.

That is, during enlargement conversion, it may be necessary to output two lines for one line of input pixel data, so the input device must be on standby while outputting these two lines. be. Also, during reduction conversion,
The number of output pixel data is smaller than the number of input pixel data, and even if input operations are performed continuously, the output data will be discontinuous, so it is necessary to provide a standby time for the output device. .

In this way, in a system that does not have an image memory, the input/output device must perform discontinuous operations in synchronization with the conversion process. However, ordinary input/output devices do not have such a function.

Therefore, conventionally, a configuration as shown in FIG. 3 has been adopted. In FIG. 3, 1 is an input device such as an image reading device, 2 is a first image memory that stores the output of the input device @1, and 3 is the image data read out from the first image memory 2 that has been converted. A conversion processing circuit 5 outputs to the image memory 4 of the rear cylinder 2, and 5 is an output device that outputs the contents of the second image memory as a hard copy, for example. By the way, in this system, two image memories (for two pages) must be provided.

(Objective of the Invention) The present invention has been made in view of this point, and its purpose is to provide an enlargement/reduction device that requires only one page of image memory and does not require any changes to the input/output device. Our goal is to provide the following.

(Structure of the Invention) The enlarging/reducing device of the present invention that achieves this object stores the image data before enlarging conversion during enlarging conversion, and stores the image data after reducing conversion during reducing conversion. It is characterized by being equipped with an image memory.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 4 is a block diagram showing one embodiment of the present invention (shown together with peripheral circuits). In the figure, 11 is an image memory, 12
1 is a conversion processing circuit, 13 is an input device, 14 is an output device, 1
5 is a control circuit. The control circuit 15 includes the image memory 11
, the operation timing of the conversion processing circuit 12, the input device 13, and the output device 14. Also, O8+~D
S3 is a data selector, the first data selector D S
l receives the output of the conversion processing circuit 12 and the output of the input device 13 through the B and AGm terminals, respectively, and connects one of them to Y.
What is output to the image memory 11 connected to the terminal, the second
The data selector DS2 receives the output of the image memory 11 and the output of the input device 13 at terminals B and A, respectively, and outputs one of them to the conversion processing circuit 12 connected to the Y terminal. The selector DS3 outputs the output to the conversion processing circuit 12 and the output of the image memory 11 to 8. ,
The signal is received at the A terminal, and one of the signals is output to the output device 14 connected to the Y terminal. Data selector DSs~D
When S3 receives the signal "L" at the select terminal S,
The signal input to the A terminal is output to the Y terminal, and conversely, when a signal "H" is received at the select terminal S, the signal input to the B terminal is output to the Y terminal. Furthermore, the first
The select signal is input as is to the select terminals S of the second data selectors DS+ and DS2, and the select signal is applied to the select terminal S of the third data selector DS3 via the inverter IN. Further, the select signal is II L 11 when enlarging, and becomes "HTT" when reducing.

Next, the operation of the embodiment having the above configuration will be explained. First, when enlarging, the select signal becomes 'L', so the input device 1
3 and the output device 15, an image memory 11 and a conversion processing circuit 12 are connected, as shown in FIG. and,
The control circuit 15 controls the input device 13 and the image memory 11.
is in an operating state, and image data read by the input device 13 is input to the image memory 11. When the input of image data for one page is completed, the image memory 11 shifts to the output state, the conversion processing circuit 12 and the output device 14 enter the operating state, and the image data is output from the image memory 11 to the conversion processing circuit 12. The converted image data is output to the output device 14.

On the other hand, during reduction, the select signal becomes "H", so
As shown in FIG. 6, the connection between the image memory 11 and the conversion processing section 12 is reversed from that in FIG.

In this case, the control circuit 15 puts the input device 13 and the conversion processing circuit 12 into the operating state, and also puts the image memory 11 into the input state. The signal read by the input device 13 is input to the conversion processing circuit 12, and after being converted,
The image is stored in the image memory 11. After the conversion process is completed, the image memory 11 enters the output state and outputs the image to the output device 14.

In this embodiment, the first to third data selectors DS1
~ Since the connection state of the image memory 11 is switched by DS3, it is sufficient to prepare one data memory 11 for 1@, and there is no need to change the input/output device at all.

Note that the data selectors DS+ to DS3 in the above embodiment
may have any structure.

(Effects of the Invention) As explained above, in the present invention, an image memory for one page is provided to store image data before enlargement conversion during enlargement conversion, and to store image data after reduction conversion during reduction conversion. Unlike the conventional method, two image memories for two pages, that is, two image memories, are not required. N. Since the image memory performs the same function as the conventional one, no changes are required to the input/output device.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams showing that input/output devices require waiting time in a system that does not have an image memory, Figure 3 is a block diagram showing an outline of a conventional device, and Figure 4
The figure is a block diagram showing one embodiment of the present invention, and FIGS. 5 and 6 are connection diagrams showing the connection state during operation of the embodiment of FIG. 4. 11... Image memory 12... Conversion processing circuit 13
... Input device 14 ... Output device 15 ... Control circuit DSx to DS3 ... Delta selector IN ... Inverter patent applicant Konishiroku Photo Industry Co., Ltd.

Claims (2)

[Claims] (1) In an enlargement/reduction device that enlarges or reduces image data given from an input device and supplies the converted image data to an output device, during enlargement conversion, the image data before enlargement conversion is stored. The enlargement/reduction device is characterized by being provided with an image memory for one page for storing image data after reduction conversion during reduction conversion. (2) a first data selector that outputs either the output of the conversion processing circuit or the output of the input device to the image memory; By providing a second data selector that outputs the output from the conversion processing circuit and a third data selector that outputs either the output of the conversion processing circuit or the output of the image memory to the output device, during enlargement, Said first
The data selector selects the output of the input device and temporarily stores it in the image memory, and the image data stored in the image memory is transferred to the conversion processing circuit via the second data selector. and supplies the output of the conversion processing circuit to the output device via the third data selector, and when reducing, causes the second data selector to select the output of the input device; The output of the conversion processing circuit is supplied to the image memory for storage via the first data selector, and the image data stored in the image memory is supplied to the output device via the third data selector. An enlargement/reduction device according to claim 1, characterized in that the enlargement/reduction device is configured as follows.