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Data error detecting circuit

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专利汇可以提供Data error detecting circuit专利检索,专利查询,专利分析的服务。并且PURPOSE: To decrease number of components while simplifying circuit constitution by reading a symbol from a RAM and using a timing signal to calculate the syndrome and a timing signal applying prescribed arithmetic processing so as to detect an error.
CONSTITUTION: A syndrome arithmetic means obtains a syndrome from a symbol from a RAM 1 and 1, α∼α
3 (α is a root of the 8-th order primitive polynomial) by using a clock pulse SCLK, the result is divided repetitively by 1, α∼α
2 to obtain S'
0 ∼S'
3 . Adder means 7∼9 calculate the sum S'
0 +S'
1 to input the result to a single and a double error detection means 11, 12. The number of times of divisions is counted and stored by a counter means 15. When the means 11 detects S'
0 +S'
1 =...=S'
2 +S'
3 =0, the existence of signal error is detected and the error location (j) is discriminated by the content of the means 15. When the means 12 detects the output of S'
0 +S'
1 =(S'
1 +S'
2 )/α
a =(S'
2 +S'
3 )/α
2a via 1/α and 1/α
2 arithmetic elements, two data errors are detected and the error location difference a=i-j, error locations j, i are discriminated.
COPYRIGHT: (C)1988,JPO&Japio,下面是Data error detecting circuit专利的具体信息内容。

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