JPH029260A - Transmission data verification system for facsimile equipment - Google Patents

Abstract

PURPOSE:To allow a transmitter to verify whether or not a data is transferred normally to the transmitter by reading a picture document as a binary picture data, compressing data, transferring the data to other device, at the same time, decoding the data into the binary picture again and printing out the data. CONSTITUTION:In the case of transferring the picture document to an opposite facsimile equipment, the picture document is read as a binary picture data for one scanning line by a picture read section 1 and stored in an input picture area in a buffer memory 5 sequentially. A coder 2 reads a binary picture data stored in the buffer memory 5 sequentially and converts the data into a compression data such as MH code or the like and transferred to the opposite facsimile equipment. On the other hand, the compressed data read out of the buffer memory 5 is decoded into a binary picture data by a expander 4 and stored in an expansion data area in the buffer memory 5 and transferred to a print mechanism section 6 sequentially as a video data and printed out. Thus, the transmission data is verified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile apparatus having an input/output function for image documents, and particularly to a data verification method for transmitted data.

[Conventional technology]

Conventional facsimile machines read image documents as binary image data, compress and encode the data, add header information, etc. to the encoded data, transfer the data as a facsimile data frame, and connect over the same line. The data is printed as image data while detecting errors that occur on the line, such as frame checking the received data on the other receiver side.

[Problem to be solved by the invention]

In the conventional facsimile machines mentioned above, the receiver side performs error detection for errors during data compression and data deterioration that occurs on the line, but the transmitter side does not verify the transmitted data. Therefore, there was a drawback in that the transmitter could not verify whether or not the image of the input image data was transferred normally to the transmitter without being distorted.The object of the present invention is to provide a facsimile that solves the above problem. An object of the present invention is to provide a transmission data verification method for a device.

[Means to solve the problem]

In order to achieve the above object, the present invention reads an image document as binary image data, compresses the data using an encoder, and transfers the compressed data to a partner device connected via the same line. The transmitted data is verified by decoding it to value image data, transmitting the compressed data, and simultaneously printing the decoded binary image data.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

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

In the figure, the facsimino apparatus used in the method of the present invention includes an image reading section 1 that reads an image document as binary image data, an encoder 2 that converts the binary image data into compressed data such as a liver code, and a telephone network line. a line control unit 3 that connects to and communicates with other devices; an expander 4 that expands the compressed image data compressed by the encoder 2 and the compressed image data input via the line into binary image data; It includes a buffer memory 5 for temporarily storing value image data, compressed code data, etc., and a printing machine side section 6 for printing binary image data.

First, when transferring an image document to the other party's facsimile machine, the image document is read as binary image data for each scanning line by the image reading section 1, and sequentially stored in the input image area in the buffer memory S. The encoder 2 sequentially reads out the binary image data stored in the buffer memory 5 and converts the MH
After converting to compressed data such as code, the buffer memory 5
The data is stored in the compressed data area within. The compressed data is read out from the buffer memory 5, added with header information, etc. to form a facsimile data frame, and then transferred from the line control section 3 to the other party's facsimile device 1. On the other hand, the compressed data read from the buffer memory 5 is decoded into binary image data by the decompressor 4.

After storing it in the decompressed data area in the buffer memory 5,
The data is sequentially transferred to the printing mechanism section 6 as video data and printed.

Next, when receiving compressed image data from the other party's facsimile machine, the compressed data received by the line control unit 3 is stored in the compressed data area in the buffer memory 5 while performing error detection such as a frame check, and then stored in the compressed data area in the buffer memory 5. After decoding it into binary image data and storing it in the decompressed data area in the buffer memory 5, it is sequentially transferred to the printing mechanism section 6 as video data and printed.

〔Effect of the invention〕

As explained above, when transferring an image document to another facsimile device, the present invention reads the image document as binary image data, compresses the data, and decodes it again into binary image data at the same time as transferring it to the other device. By printing this, there is an effect that the transmitter can verify whether the input image data has been properly transferred to the transmitter without distorting the image.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1... Image reading unit 2... Encoder 3...
Line control section 4...Extender 5...Buffer memory 6...Printing mechanism section

Claims (1)

[Claims] (1) In a method in which an image document is read as binary image data, the compressed data compressed by an encoder is transferred to a partner device connected to the same line, the compressed data is decoded into binary image data by a decoder, A transmission data verification method for a facsimile machine, characterized in that transmission data is verified by printing decoded binary image data at the same time as compressed data is transmitted.