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1. 发明授权

US06275880B1 Framing codes for high-speed parallel data buses 失效
标题翻译：高速并行数据总线的成帧代码
公开(公告)号：US06275880B1
公开(公告)日：2001-08-14
申请号：US09253537
申请日：1999-02-22
申请人： Una Quinlan , Con Cremin , Eugene O'Neill , J. Noel Butler , Mark A. Hughes , Neil O. Fanning
发明人： Una Quinlan , Con Cremin , Eugene O'Neill , J. Noel Butler , Mark A. Hughes , Neil O. Fanning
IPC分类号： G06F1300
CPC分类号： H04L1/0063 , H04L1/0072 , Y10S707/99942 , Y10S707/99943 , Y10S707/99944
摘要： A plurality of serial data streams are transmitted on a corresponding plurality of lines at a common frequency in equal groups of symbols. A framing signal composed of groups of symbols corresponding in number to groups of data symbols is transmitted on an additional control line. Each group of symbols in the framing signal includes a majority of symbols capable of representing a first plurality of code words and a second plurality, substantially less than the first plurality, of valid code words, and a minority of symbols which constitute parity check symbols. Each of the valid code words consists of a first sub-group of similar symbols and a second plurality of similar symbols. For some of the valid code words the symbols in the first sub-group are similar to the symbols in the second sub-group. For other valid code words the symbols in the first sub-group are different from the symbols in the second sub-group. The valid code words correspond to groups which represent (a) start of a data packet or block; (b) data/(c) a gap between groups of data; and (d) an idle state. The sequence of groups in the framing signal is monitored by means of a state machine.
摘要翻译：多个串行数据流以相等的符号组以公共频率在对应的多条线上发送。在附加控制线上发送由多个数据符号组对应的符号组构成的成帧信号。成帧信号中的每组符号包括能够表示第一多个码字的多数符号，以及基本上小于第一多个有效码字的第二多个符号，以及构成奇偶校验符号的少数符号。每个有效代码字由相似符号的第一子组和第二多个相似符号组成。对于一些有效的代码字，第一子组中的符号与第二子组中的符号相似。对于其他有效的代码字，第一子组中的符号与第二子组中的符号不同。有效码字对应于表示（a）数据包或块的开始的组; （b）数据/（c）数据组之间的差距; 和（d）空闲状态。通过状态机监视成帧信号中的组的序列。

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