JPH0284865A - Decoding device for facsimile picture - Google Patents

Abstract

PURPOSE:To facilitate a processing to handle a picture by inputting encoded picture data for facsimile communication, storing the data and the decoding the data of one byte segmented from these picture data by using a decoding picture data table. CONSTITUTION:The number of 0 is counted from the first position of a bit pattern train in an encoding picture data and a table counter C1, which determines a block to correspond to the number of 0 in the decoding picture data table, is cleared. Next, the encoding picture data are loaded to a resistor R1 as a means to store the data of one byte segmented from the encoding picture data. As a means to retrieve decoded facsimile picture data from the decoding picture data table by using the segmented data of one byte, the resistor R1 of encoding data is shifted by one bit to left. Then, when the pushed bit is 0, the counter C1 is increased by 1 and when the pushed bit is 1, the decoding picture table is loaded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an image processing apparatus, and more particularly to a facsimile image decoding apparatus having a function of decoding and displaying input facsimile image information.

BACKGROUND OF THE INVENTION Conventionally, image information sent and received between facsimile machines has been encoded based on the encoding method shown in CCITT Recommendations T and 4 in order to compress the amount of data. It was no longer possible to reproduce and display it on other terminal devices.

Problems to be Solved by the Invention Since terminal devices other than the conventional facsimile devices mentioned above do not have means for restoring encoded image information, it is necessary to utilize the image information of facsimile devices, which have become popular as OA devices. The disadvantage is that it cannot be done.

Additionally, only a few facsimile machines have the ability to transmit image information on their own to a host computer or other terminal device by means other than telephone lines. ,There were limitations when building a network between,heterogeneous devices.

The present invention has been made in view of the above-mentioned conventional situation,
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a new facsimile image decoding device that makes it possible to eliminate the above-mentioned drawbacks inherent in the conventional techniques.

Means for Solving the Problems In order to achieve the above object, a facsimile image decoding device according to the present invention comprises: a) encoded facsimile image data input means; b) means for storing encoded facsimile image data. , C) means for storing 1 byte (8 bits) of data cut out from the image data, and d) means for storing the facsimile image data decoded from the decoded image data table using the 1 byte of data described above. search·
e) means for storing the decoded facsimile image data output from the above-mentioned search/output means; and f) displaying the facsimile image data by the output from the decoded image data storage means. and an image display means.

Embodiment Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.

FIG. 1 is a schematic diagram showing an embodiment of means for searching decoded image data from a decoded image data table using image data according to the present invention.

Referring to FIG. 1, first, a table counter C1 counts the number of O's from the first position of the bit pattern string of encoded image data and determines the block corresponding to the number of 0's in the decoded image data table. Clear.

Next, the encoded image data is loaded into the register R1, which serves as a means for storing 1-byte data extracted from the encoded image data.

Next, as a means of searching for decoded facsimile image data from the decoded image data table using 1 byte of data cut out from the encoded image data, the encoded data register R1 is shifted by 1 bit to the left and pushed out. If the pressed bit is 0, the table counter C1 is incremented by 1, and if the pushed bit is 1, the decoded image data table is loaded.

The decoded image data table consists of 32 patterns of run lengths 0 to 63 represented by the termination code and run lengths 64 to 2048 represented by the make-up code, 1 byte of run length numbers assigned from 64 to 95, and the The number of effective bits in the bit pattern of the code data is 1 byte, which is a total of 2 bytes of data, divided into blocks by the number of O's from the beginning of the bit pattern of the code data, and written to the address indicated by the remaining pattern. Create white and black colors in advance.

The bit pattern of encoded data can be classified from 0 to 7 O's from the beginning, and when the first 1 bit is removed, the remaining data is a maximum of 7 bits, so it is difficult to decode. The address of the image data table is expressed as [0000000000000000].

In makeup code, run length 1792~2
Since white in 048 is the same as black, the black table can also be used.

Furthermore, when table counter C1 reaches 11, EN
It becomes D of LINE.

As a means of storing image data decoded from the decoded image data table, the run length is calculated from the run length number loaded from the decoded image data table, data is stored in memory for that number of bits, and the effective number of bits is stored. The remaining part of the coded data register R1 after removing the coded data becomes part of the next coded image data to be decoded.

FIG. 2 is a diagram showing a specific example of outputting image data decoded from encoded image data.

FIG. 3 is a diagram showing a specific example of creating a decoded image data table.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, there is provided an encoded facsimile image data input means for inputting encoded image data for facsimile communication; By providing a means for reproducing and outputting, it is possible to obtain an effect that processing for handling facsimile images can be facilitated in a terminal device other than a facsimile machine, such as a personal computer.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of means for searching decoded image data from a decoded image data table using encoded image data. FIG. 2 is a diagram showing a specific example of outputting image data decoded from encoded image data. FIG. 3 is a diagram showing a specific example of creating a decoded image data table.

Claims (1)

[Scope of Claims] a) means for inputting encoded facsimile image data; b) means for storing encoded facsimile image data; and c) storing 1 byte (8 bits) of data extracted from the image data. d) means for searching and outputting decoded facsimile image data from a decoded image data table using 1-byte data cut out from the image data; e) outputting from the searching means; A facsimile image comprising: means for storing certain decoded facsimile image data; and f) image display means for displaying facsimile image data by output from the decoded facsimile image data storage means. decoding device.