JPH02213269A - Facsimile receiver - Google Patents

Abstract

PURPOSE:To contrive the increase of the picture data quantity before encoding which can be accumulated in a unit memory by providing an encoding means for outputting the picture data as encoded compression data, and an accumulating means for storing the compression data in the memory. CONSTITUTION:A data receiving part 1 outputs encoded data receive through a circuit from an opposite equipment in accordance with a communication control procedure. A decoding part 2 outputs picture data obtained by decoding the received encoded data. An encoding mode determining part 3 analyzes the picture data from the decoding part 2, determines an encoding method whose compressibility is high an informs it to an encoding part 5. The encoding part 5 outputs compression data obtained by encoding the picture data inputted through a data buffer 4 from the decoding part 2 with the encoding method determined by the encoding mode determining part 3. The data buffer 4 stores temporarily the picture data from the decoding part 2 and outputs the stored picture data by allowing it to match with the encoding processing speed of the encoding part 5. An accumulation control part 6 executes a control for accumulating the compression data from the encoding part 5 in a disk memory 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile receiver, and more particularly to a facsimile receiver that stores received image data in a memory.

[Conventional technology]

A conventional facsimile receiver receives data encoded using an encoding method determined during a communication control procedure and stores it in a memory.

[Problem to be solved by the invention]

The conventional facsimile receiver described above stores the received encoded data in memory, so it has the disadvantage that a large amount of memory is used when encoded data is sent using an encoding method with a low compression rate. be.

[Means to solve the problem]

The facsimile receiver of the present invention includes a decoding means for outputting received encoded data as decoded image data, an encoding method determining means for selecting an encoding method that allows the image data to be highly compressed, and the encoding method. The apparatus includes an encoding means for outputting the image data as compressed data encoded according to the above-mentioned conditions, and a storage means for storing the compressed data in a memory.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention.

The data receiving unit 1 outputs encoded data received from a partner device via a line in accordance with the communication control procedure according to the CCITT T.30 recommendation. The decoding unit 2 decodes the received encoded data and outputs image data. - The encoding mode determining unit 3 analyzes the image data from the decoding unit 2, determines an encoding method with a high compression rate, and notifies the encoding unit 5 of the encoding method.

The encoding unit 5 encodes the image data input from the decoding unit 2 via the data buffer 4 using the encoding method determined by the encoding mode determining unit 3 and outputs compressed data. The data buffer 4 temporarily stores the image data from the decoding section 2, matches the encoding processing speed of the encoding section 5, and outputs the stored image data.

The storage control unit 6 controls the storage of compressed data from the encoding unit 5 in the disk memory 7.

The disk memory 7 stores the encoded data from the encoder 5 under the control of the storage controller 6.

In this way, the encoded data according to the encoding method determined by the communication control procedure between the data receiving section 1 and the partner device is decoded into image data in the decoding section 2, sequentially stored in the data buffer 4, and encoded. The encoding mode determining section 3 analyzes the image data, determines the encoding method expected to give the highest compression rate, and notifies the encoding section 5 of the encoding method. The encoding unit 5 can sequentially take out the image data stored in the data buffer 4 according to the notified encoding method and store the encoded compressed data in the disk memory 7.

〔Effect of the invention〕

As explained above, the present invention increases the amount of unencoded image data that can be stored in a unit memory by encoding received and decoded image data using a high compression rate encoding method and storing it in the memory. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. 1... Data receiving section, 2... Decoding section, 3... Encoding mode determining section, 4... Data buffer, 5...
Encoding unit, 6... Accumulation control unit, 7... Disk memory.

Claims (1)

[Claims] a decoding means for outputting received encoded data as decoded image data; an encoding method determining means for selecting an encoding method that allows the image data to be highly compressed; and an encoding method for encoding the image data according to the encoding method. 1. A facsimile receiver comprising: encoding means for outputting compressed data; and storage means for storing the compressed data in a memory.