Error detection and correction in an optical storage system

摘要: A self-checking shared encoder/decoder circuit for use with a Reed-Solomon coding scheme of an optical disk storage system. The system includes drive adapted to permanently store data on removable platter. Prior recording byte the platter, is encoded code. When read from disk, it decoded and error correction syndromes are generated. plurality syndrome buffer registers provided in order allow several functions be carried out parallel. Syndromes that detected comprise all zeros used simplify processes beyond normal used. same circuitry performing encoding decoding functions. This independent sets RAM, coupled one input exclusive OR (modulo two sum) adding circuit. output fed back RAM. Two multiplier circuits product tied modulo addition other combined similar products sets, resulting combination signal selectively connected circuit, along recorded or