Data transmission system

Details Data transmission system Data transmission system

2007-02-06

2007-02-06

Baker, Stephen M. (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Skew detection correction

Reexamination Certificate

active

10294123

ABSTRACT:
A data transmission system which provides a better level of transmission quality, without being affected by skew variations. A serial-to-parallel converter reforms a serial data stream into a set of parallel data streams. A sync pattern inserter generates and inserts sync patterns to the parallel data streams. The resultant sync pattern-inclusive data streams are, however, distorted with some propagation delay skews when they arrive at the receiving end. A data retimer extracts a reference clock from one of the received data streams, and retimes all streams with that reference clock, thus producing a set of retimed data streams. An in-sync detector produces pulse signals indicating the presence of sync patterns in the retimed data streams and determines whether each of those streams is in in-sync state. A phase adjuster identifies the propagation delay skews by examining the pulse signals, and adjusts the phase of each data stream to eliminate them.

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patent: 6901550 (2005-05-01), Adar et al.
patent: 2002/0009169 (2002-01-01), Watanabe

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