JPS6150463A - Input and output device - Google Patents

Abstract

PURPOSE:To improve the processing speed and quality of output picture by providing a function bypassing a quantizing device when a picture is outputted without special processing in an image editing system. CONSTITUTION:When no special processing is required, an analog signal from an image scanner 1 is outputted directly to a laser printer 7 through a synthesizer 6. The synthesizer 6 has a function synthesizing selectively output signals of the scanner 1 and a data expander 4. That is, the output signal of the scanner 1 is stored always in a picture memory 3 and the synthesizer 6 selects either an output of the scanner 1 or that of the data expander 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an input/output device, particularly an image editing system with intelligent functions.

[Background of the invention]

Figure 1 shows a conventional image editing system. The image converted into an electric signal E by the image scanner 11 is compressed by a converter/compressor 21 having an A/D conversion function and a data compression function, and then stored in an image memory 31 (for example, see Japanese Patent Application Laid-Open No. 113539/1983). ). This compressed data is expanded by a data expander 4, then combined with character data from a document editing device (word processor) 5 by a synthesizer 6 (digital FL OR circuit), and then output as a hard copy by a laser printer 7. be done. In Figure 1, even when used as a so-called copying machine that outputs one page for each original, the processes 2 to 4 above are performed once, so it takes a long time to store the image as a memo and the processing speed decreases. There are drawbacks such as image deterioration due to quantization.

[Purpose of the invention]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate such drawbacks, and it is an object of the present invention to provide a copying machine with improved processing speed and output image quality.

[Summary of the invention]

In order to achieve this object, the present invention is characterized in that it has a function of bussing the quantization mechanism when the image is output without any special processing.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to examples. FIG. 2 shows an embodiment of the present invention.

When no special processing is required for image 1, the analog signal obtained from image scanner 1 is output directly to laser printer 7 through synthesizer 6.

A synthesizer 6 synthesizes the contents of the word processor 5 and the image memory 3 with the results expanded by the data expander 4, and generates a luminance signal for the laser printer 7. Here, the outputs of the data expander 4 and the word processor 5 are generally two-channel digital signals in many cases, but the synthesizer 6 is also capable of transmitting such signals. Furthermore, the synthesizer 6 selectively synthesizes the output signals of the image scanner 1 and the data decompressor 4. Oh. The output signals of 1, 7 - 7 ya, ka are always stored in the image memory 3, and the synthesizer 6I selects either the output of the image scanner or the data decompression 4. Here, the image memory 3f may include an A/D converter, and when the memory capacity is insufficient, it may also have data compression and decompression functions. Also,
A display device may be used instead of a laser printer.

FIG. 3 shows an embodiment of the synthesizer 6, in which analog switches SW1 to SW3 are added to the addition amplifier 31. The output of the data expander 4 is applied to the terminal a, the output of the image scanner is applied to the terminal b+, and the character data WD from the word processor 5 is applied to the terminal C1.
are opened and closed, and the signals inputted from the terminals a, b, and c are added and amplified through the adding resistors 32, 33, and 34 and the feedback resistor 35, and sent to the laser printer 7F from the output terminal d.

〔Effect of the invention〕

As explained above, according to the present invention, the output signal of the image scanner can be output immediately, so that, for example, when the image editing system is used as a copying machine, the copying speed and the quality of the copied image can be improved. The effect is profound.

[Brief explanation of drawings]

FIG. 1 shows the configuration of a conventional image editing system, FIG. 2 shows the configuration of an image editing system according to the present invention, and FIG. 3 shows an example of an implementation circuit of a synthesizer. 6... Synthesizer. ¥51 Figure 2

Claims (1)

[Scope of Claims] Photoelectric conversion means for converting the shading of an image into electrical signals, storage means for storing the digitized electrical signals, document editing means for generating character data and control signals, and storage means for generating character data and control signals. In an input/output device comprising a display means for displaying the output data of the photoelectric conversion means and the character data, the character data and the output signal of the photoelectric conversion means are displayed by the control signal An input/output device characterized in that it is provided with a synthesizing means for synthesizing and sending it to the display means.