Based on the analysis of the definition of parity checking automaton and the meaning of station transition function and output function,the paper,through introducing some atom proposition,obtains the logic description of parity checking automaton.

Nicety and continuity of data transfer are important performance indexes in serial communication system,usually certain error-tolerant technology is adopted,widely used are parity check,CRC,hamming code check and so on,but parity check can t checkout even code bits error,CRC-4 can only checkout 2 code bits error or correct 1 code bit.

Based on the information hiding and the encryption protecting, and integrating the characteristic of the 24bit BMP image, this paper introduces a scheme that can dual protect the information transmission by first encrypting the information and then hiding the cryptograph in the 24bit BMP images with parity check hiding.

Research on efficient triple disk failure tolerance data placement scheme based on parity code;

To meet the need of high speed,least error and multitransmission in the serial communication by adopting the over-sample technology and a method of sequential circuit parity that is more effective and prompt than the traditional combined circuit,the design of dual channel UART used more conveniently is made.

This paper introduces a faster and reliable checkpointing schema with N+1 parity by using cache and the incremental disk checkpointing technology.

In view of the character that message in RAM has mutability when the RAM is subjected to interference,this paper discusses the concrete method of accomplishing odd-even check for out-of-chip data memory in SCM systems.