Byte stream escape character hardware processing method

Abstract

The invention discloses a byte stream escape character hardware processing method, and aims to provide a hardware processing method which is less in occupied storage resource and short in processing time delay for byte stream meaning character processing. The method is realized through the following technical scheme: in data processing of a digital communication system, a sending end module receiving input data given by a superior module, and inputting an enable signal of a channel clock and an effective signal of the input data; if the escape character exists in the byte stream, setting the detected output escape identifier as a high level, setting the escape identifier as a low level when the escape character does not exist, and performing shift register through an escape identifier shift register; carrying out escape interpolation operation on the byte stream by the interpolation state machine according to the output signal of the escape identification shift register, and selectinga specific tap signal in a data storage first-in first-out queue FIFO to output and obtain continuous byte stream output data at the same time; and the output effective signal processing module carrying out processing according to the corresponding logic to obtain an output data effective signal.

Description

technical field [0001] The invention relates to a hardware processing method for byte stream escape characters in data processing in the field of digital communication. Background technique [0002] A stream is an ordered set of bytes with a starting point and an ending point, and is a general term or abstraction for data transmission. According to the different processing data types: streams are divided into character streams and byte streams, among which character streams are mainly processed for character text, while byte streams are processed in a wider range. In the data processing of digital communication systems, many communication protocols have reserved characters of the protocol itself. When there is data that is the same as the reserved characters in the sending and receiving data, the usual practice is to escape the data at the sending end, and then Add several bytes (called redundant characters) to get the escaped character, check whether there is an escaped ch...

AI Technical Summary

Problems solved by technology

The limitation of this method is that the byte stream is usually not arranged in frames, the length of each byte stream may be different, and the cache size must be cached according to the maximum length of the byte stream, which consumes a lot of storage resources and has a large processing delay.

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