Method for preprocessing data to be compressed and compressed data transmission method

A technology of compressing data and preprocessing, applied in the direction of digital transmission system, transmission system, data exchange network, etc., it can solve the problem that the compressed data cannot be generated, the receiving end cannot decompress or restore the compressed data, and the control data cannot be distinguished from the actual data, etc. problem, to ensure the effect of decompression, effective recovery or restoration

Inactive Publication Date: 2007-03-28
白杰 +2
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  • Abstract
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Problems solved by technology

If the correspondence between the compressed data packet and a character set is as shown in Figure 1 (C), that is, the actual data in the data area 2 corresponds to all of the character sets in the three parts 11, 12, and 13 character areas, then the control area 1 The control data in either cannot be generated, or the characters corresponding to the actual data in data area 2 are repeated, so that the control data and actual data cannot be distinguished in the compressed data stream, and the receiving end cannot decompress or restore the compressed data

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  • Method for preprocessing data to be compressed and compressed data transmission method
  • Method for preprocessing data to be compressed and compressed data transmission method
  • Method for preprocessing data to be compressed and compressed data transmission method

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Embodiment Construction

[0033] Below: the present invention is further described in conjunction with accompanying drawing.

[0034] Referring to FIG. 1(D) first, FIG. 1(D) is a second correspondence diagram between a compressed data packet and a character set. In the present invention, to achieve data compression transmission and decompress compressed data at the data receiving end, it is necessary to rely on the control data contained in the compressed data stream, therefore, to effectively distinguish the control data from the compressed data, it is necessary to make this The two parts of data correspond to different character sets or parts with different character set codes. Assuming that the character set has three parts of characters, the first part 11 is a control character, the second part 12 is a number, and the third part 13 is an English letter. Since the encodings of these three parts are different from each other, it can be shown in Figure 1 (D) , so that the encoding of the control data...

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Abstract

The invention discloses a method for preprocessing to-be-compressed data, comprising: selecting a character set having at least two character subsets with different codes; using character coding rules of the first character subset to code binary stream of the to-be-compressed data and convert the binary stream into character stream, where the characters in the character stream are ones in the first character subset. And it can assure the control data and actual data sent to the receiving end are clearly differentiated, thus assuring the decoded control data decompresses the actual data, effectively recovering or reducing the actual data. And it also discloses a method for transmitting the compressed data produced by the preprocessing method above.

Description

technical field [0001] The invention relates to a preprocessing method of compressed data in the data compression process and a transmission method of the compressed data. Background technique [0002] Before the data in the network is transmitted, in order to reduce the actual amount of transmitted data, it is usually necessary to compress the data to be transmitted, so as to reduce the occupation of network transmission resources and reduce the chance of transmission failure, and improve the efficiency of data transmission. The transmitted data is usually packaged by the node that sends the data, that is, the transmitted data is packaged into a data packet in the format specified by the protocol according to a certain communication protocol, such as IP data packet, TCP data packet, etc., and these data packets are transmitted to The network transmission device compresses and sends. A data packet usually includes a header and a body of the packet. The header is generally u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L25/49H03M7/38H03M7/42H04N7/26H04L1/00
Inventor 白杰李薇鲁征宇
Owner 白杰
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