发明授权
- 专利标题: Method and apparatus for realignment of synchronous data
- 专利标题(中): 用于重新对准同步数据的方法和装置
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申请号: US929623申请日: 1992-08-13
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公开(公告)号: US5359630A公开(公告)日: 1994-10-25
- 发明人: Paul C. Wade , David J. Sager , Andrey Varpahovsky
- 申请人: Paul C. Wade , David J. Sager , Andrey Varpahovsky
- 申请人地址: MA Maynard
- 专利权人: Digital Equipment Corporation
- 当前专利权人: Digital Equipment Corporation
- 当前专利权人地址: MA Maynard
- 主分类号: G06F1/10
- IPC分类号: G06F1/10 ; H04L7/00 ; H04L7/033 ; H04L7/04
摘要:
A method and device for receiving data in a synchronous communication system. Data can be accurately transferred between two subsystems in a synchronous system even where the clock skew and propagation delay between the two subsystems is unlimited. The receiving subsystem is initialized to ensure synchronous data transfer over a theoretically infinite range. The transmitting subsystem transmits data and a forwarded clock to the receiving subsystem. Data is captured in three state devices arranged in parallel to eliminate minimum delay requirements and to expand data valid time. The captured data is then aligned to the clock of the receiving subsystem by controlling a multiplexer which selects the proper state device output to pass to another state device for alignment to the receiving subsystem's clock. The multiplexer is controlled by a circuit which monitors the capturing of the incoming data and determines the correct state device output to select for proper data alignment.
公开/授权文献
- US4770526A Ranging method and apparatus 公开/授权日:1988-09-13
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