A Lossless Information Embedding and Restoration Method in Format Data Stream

A technology of information embedding and recovery methods, applied in data exchange networks, digital transmission systems, electrical components, etc.

Active Publication Date: 2017-08-29
XIAN INSTITUE OF SPACE RADIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no information hiding method that can losslessly embed information in ordinary data streams without special characteristics

Method used

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  • A Lossless Information Embedding and Restoration Method in Format Data Stream
  • A Lossless Information Embedding and Restoration Method in Format Data Stream
  • A Lossless Information Embedding and Restoration Method in Format Data Stream

Examples

Experimental program
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Effect test

Embodiment

[0171] Here, taking the ATM cell on the star as an example, the specific implementation manner of lossless information embedding in the formatted data stream is described in detail. The following table shows the ATM cell format on the star. The cell has a total of 53 bytes, including a 5-byte header and a 48-byte payload. The header includes 13 bits of additional information embedded in the information. Except for the 13-bit information embedding additional information, everything else in the ATM cell header is in the format of the communication protocol standard.

[0172]

[0173] Suppose the payload of the first ATM cell received is (decimal):

[0174] 0, 0, 16, 16, 55, 55, 68, 68, 16, 16, 85, 85, 102, 102, 16, 16, 119, 119, 16, 16, 0, 0, 16, 16, 55, 55, 68, 68, 16, 16, 85, 85, 102, 102, 16, 16, 119, 119, 16, 16, 0, 0, 16, 16, 55, 55, 68, 68

[0175] 1. Analyze the load of ATM cell by byte.

[0176] The maximum value in this data stream is K max =119, the minimum valu...

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Abstract

A lossless information embedding and recovery method in the format data stream, the additional information embedded in the information is stored in the head of the data stream, and the redundant bits that can be used to embed the information are generated by calculating the load of the data stream, so as to realize In order to embed information in common format data stream, and recover data stream and embedded information without distortion. The present invention first calculates the difference between the maximum value and the minimum value in the data stream, and compares the size between the difference and 2n (0<n<8); then calculates the amount of information that can be embedded in various situations, and selects a The situation with the largest amount of information can be embedded and information embedded. When the receiving end receives the data, it extracts the embedded information in the format data stream and recovers the original data. The invention can be used for losslessly embedding information in format data streams without special features, and improves system transmission capacity without increasing channel resources.

Description

technical field [0001] The invention relates to a lossless information embedding method in a formatted data stream, which belongs to the technical field of data communication transmission. Background technique [0002] Common lossless information embedding methods are all for data streams with certain characteristics, such as images, audio and text, etc. When hiding such data streams, it is necessary to use the correlation between data streams to embed information. At present, there is no information hiding method that can losslessly embed information in ordinary data streams without special characteristics. The present invention proposes a lossless information embedding method in formatted data streams, which can embed information in various data streams, restore data streams and embedded information without distortion, and improve channel resources without increasing channel resources. The transmission capacity of the system. Contents of the invention [0003] The prob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/951H04L47/43
Inventor 张怡周诠黎军呼延烺李静玲崔涛梁薇魏佳圆
Owner XIAN INSTITUE OF SPACE RADIO TECH
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