发明授权
- 专利标题: Data transmission systems
- 专利标题(中): 数据传输系统
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申请号: US730876申请日: 1976-10-08
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公开(公告)号: US4071692A公开(公告)日: 1978-01-31
- 发明人: Donald A. Weir , Eric S. Usher , George A. Howells
- 申请人: Donald A. Weir , Eric S. Usher , George A. Howells
- 申请人地址: NY New York
- 专利权人: International Standard Electric Corporation
- 当前专利权人: International Standard Electric Corporation
- 当前专利权人地址: NY New York
- 优先权: UK43564/75 19751023
- 主分类号: H04L25/45
- IPC分类号: H04L25/45 ; H04L25/48 ; H04L25/49 ; H04L15/00 ; H04B1/04
摘要:
Intelligence is conveyed in a PCM bit stream form with alternate bits being inverted. Additional information is conveyed by violations of the alternate bit rule so that two successive bits have the same polarity. Prior to being coupled to the alternate mark inversion coder a pseudo-random bit stream is mixed by binary addition without carry to the intelligence bit stream to maintain low DC level in the transmitted mixed bit stream and to maintain bit transitions relatively high.
公开/授权文献
- US5859314A Mice with targeted tyrosine kinase, lyn, disruption 公开/授权日:1999-01-12