Stationary head type compact cassette digital audio recorder was developed. Because of its high track density, thin film head is employed. In order to increase linear recording density 2/4M channel coding is used. Considering error characteristics of recording channel using thin film head, powerful error correcting code which is named RSC-III code is developed and employed. It is a combination of the Reed-Solomon over GF(28) and the 16 bits CRC over GF(2). This paper describes the tape format, decoding method using Euclidean algorithm, and performance of its error correction.
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