Coding method and apparatus

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...

AI Technical Summary

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 end, and is used for the data receiving end to re-enter the locked state. Therefore, the data receiving end will not A specific coded data is treated as valid data. If the data sending segment subsequently uses this specific coded data without RMT to send valid data, the data receiving end will still consider the coded data not valid data, resulting in data transmission fail

Images