Coding method and apparatus

A coding method and coding technology, applied in the field of communication, can solve problems such as increased costs and data transmission failure, and achieve the effects of reducing cable costs, improving reliability and transmission efficiency

Inactive Publication Date: 2009-02-25
PEKING UNIV FOUNDER GRP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the operation of the data receiving end to notify the data sending end of the information that it has lost the lock state needs to add another transmission cable on the basis of the original transmission line, thus increasing the cost.
In addition, the specific coded data without RMT is the coded data pre-agreed between the data sending end and the data receiving

Method used

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  • Coding method and apparatus
  • Coding method and apparatus
  • Coding method and apparatus

Examples

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Example Embodiment

[0024] The embodiment of the present invention provides an encoding method and device suitable for high-speed serial data transmission, so as to ensure that the receiving end of the serial data stream enters the locked state without losing lock without increasing the cable cost; In addition, when using the coding scheme provided by the embodiment of the present invention to encode a piece of continuously repeatedly sent data, only two code words are needed, so the data transmission rate can be effectively increased.

[0025] The embodiments of the present invention will be described in detail below in conjunction with the drawings.

[0026] For any piece of data stream to be encoded, see image 3 , The encoding method for high-speed serial data transmission provided by the embodiment of the present invention includes the steps:

[0027] S301: Read data sequentially from the data stream to be encoded, and determine a data group composed of the same data that appears continuously an...

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PUM

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Abstract

The invention discloses an encoding method and a device thereof, which can avoid repetitive multiple transition (RMT) in high-speed serial data transmission without increasing cable cost. The encoding method comprises the steps of sequentially reading out data to be encoded from a stream of data to be encoded, and determining a data set composed of data which continuously appears and the appearance frequency of the data; and determining a designation code for designating the frequency according to the appearance frequency of the data in the data set, and generating an encoding sequence of the data set according to the designation code and the data code of the data. The inventive encoding method and the device can be used for data encoding in high-speed serial data transmission technology and avoid RMT in the encoding sequence, thereby ensuring that a receiving terminal can rapidly enter a locked-in state, improving data transmission reliability and transmission efficiency, and reducing cable cost.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an encoding method and device. Background technique [0002] The existing high-speed serial data transmission technology uses a pair of cables to transmit a group of synchronous data. Due to the simple structure and low cost of the cables, this transmission technology has been more and more widely used. [0003] This high-speed serial data transmission technology completes the parallel-to-serial conversion at the data sending end, and at the same time adds a bit of 1 and a bit of 0 to the front end and back end of each group of serial coded data obtained, so that In the case of continuous clocks, there will be a link between every two consecutive codewords (one codeword can carry a set of serial data) in the serial bit stream (that is, encoded data) actually output by the data sending end. The rising edge of the clock where the sending clock has a frequency multip...

Claims

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Application Information

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IPC IPC(8): H03M9/00
Inventor 温晓辉陈峰刘志红
Owner PEKING UNIV FOUNDER GRP CO LTD
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