METHOD AND ARRANGEMENT FOR DETECTING UNIDIRECTIONAL ERRORS WITH SYSTEMATIC UNORDERED CODES

摘要

The invention relates to a method and an arrangement for the detection of unidirectional errors in words of systematic unordered codes. These codes are Bose-AUED codes and Biswas-Sengupta-AUED codes. The error detection method consists in translating the code words into words of a Berger-type code which are then checked by using a method for the corresponding Berger-type code. The inventive error detection arrangement which comprises a translation circuit and a Berger-type code checker can be tested with a very low number of code words. It has the characteristic of being self-testing almost independently of the amount of code words provided and is therefore extremely suitable as embedded checker. Said checker has two outputs emitting a two-rail-signal or one output carrying a periodic signal. Moreover, this checker is not code-splitting in the conventional sense, but yet capable of detecting all unidirectional errors.