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    • 5. 发明授权
    • Data transmission system
    • 数据传输系统
    • US07174484B2
    • 2007-02-06
    • US10294123
    • 2002-11-14
    • Hiroyuki ShimonoKunimitsu ItashikiTeruhiko SuzukiShuji Miyake
    • Hiroyuki ShimonoKunimitsu ItashikiTeruhiko SuzukiShuji Miyake
    • H03M9/00H04L7/04
    • H04L7/04H04L25/14
    • 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.
    • 数据传输系统提供更好的传输质量水平,而不受偏差变化的影响。 串行到并行转换器将串行数据流改造成一组并行数据流。 同步模式插入器生成并将同步模式插入并行数据流。 然而,所产生的同步图形包含数据流在它们到达接收端时被一些传播延迟偏差扭曲。 数据重新定时器从接收的数据流之一提取参考时钟,并且用所述参考时钟重新计时所有流,从而产生一组重新定时数据流。 同步检测器产生指示在重定时数据流中存在同步模式的脉冲信号,并确定这些流中的每一个是否处于同步状态。 相位调整器通过检查脉冲信号来识别传播延迟偏差,并调整每个数据流的相位以消除它们。