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将GCR(4/5)编码制作为串行数字磁带记录的码型所遇到的困难是没有现成的、高可靠的帧同步码。本文提出一种GCR编码制帧同步码的设计方法,并推荐一个15位字长和20位字长的帧同步码。
The difficulty encountered in creating a GCR (4/5) code as a pattern for serial digital tape recording is that there is no readily available, highly reliable frame synchronization code. This paper presents a GCR encoding system frame synchronization code design method, and recommended a 15-bit word length and 20-bit word frame synchronization code.