JPH0392062A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To reduce the circuit scale by converting a picture signal from a personal computer from a serial signal into a parallel signal in the order of identification and storing the signal into a memory. CONSTITUTION:An interface circuit 1 outputs a digital picture signal (R, G, B) inputted from a personal computer(PC) onto a display device CRT and outputs a serial picture data 6 resulting from the digital picture signal with a clock period CLK from the PC to a conversion circuit 2. The conversion circuit 2 outputs the picture data 7 converted from a serial signal into a parallel signal to a storage circuit 4 for 8-bit each with an output generated from the counter circuit 3 with the clock CLK from the PC. The control circuit 5 applies compression coding suitable for the line to the picture data read from the storage circuit 4 and sends the result. Thus, a complicated refresh circuit or a memory in response to the CLK inputted from the personal computer is not required and a simple and inexpensive circuit is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile device, and particularly to a facsimile device that transmits image data from a personal computer.

[Conventional technology]

A conventional facsimile machine inputs a 21 MHz clock from a personal computer, and stores serial data obtained by sampling image data using that clock in a memory. [Problems to be Solved by the Invention] The above-mentioned conventional facsimile machine has a high-speed clock, so there is a limit to the memory that can respond, and furthermore, it is necessary to alternately write and refresh image data, which leads to unreasonable processing time. However, the disadvantage is that the circuit scale becomes large.

[Means to solve the problem]

The facsimile apparatus of the present invention includes means for converting digital image signals inputted from a personal computer from serial to parallel in identification order, means for accumulating the converted parallel image data, and reading out the accumulated parallel image data to determine the color density. It has means for converting, encoding, and transmitting. [Example] Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention.

The interface circuit 1 is a personal computer (P
C) outputs the input digital image signal (R, G-B) to the display CRT, and serial image data 6 sampled at the clock CLK period from the PC is output to the conversion circuit 2. The conversion circuit 2 outputs to the storage circuit 4 image data 7 which is converted from serial to parallel every 8 bits by the counter circuit 3 using the output generated by the clock CLK from the PC. Control circuit 5 is storage circuit 4
The image data read from the image data is compressed and encoded appropriately for the transmission line, and then transmitted. [Effects of the Invention] As explained above, the present invention converts the image signals from the personal computer from serial to parallel in the order of identification and stores them in the memory, thereby converting the CLK (2
1MHz> without using memory according to
This has the effect of making the circuit simple and inexpensive.

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention. 1...Interface times, 2...Conversion circuit, 3.
...Counter circuit, 4...Storage circuit, 5...Device control circuit.

Claims (1)

[Claims] means for converting digital image signals input from a personal computer from serial to parallel in identification order; means for accumulating the converted parallel image data; and reading out the accumulated parallel image data, converting the color density, encoding and transmitting. A facsimile device characterized in that it has means.