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    • 2. 发明授权
    • Method and apparatus for searching frame alignment with false alignment protection
    • 用于对准保护的方法和装置
    • US08601345B1
    • 2013-12-03
    • US12778398
    • 2010-05-12
    • Shuo Huang
    • Shuo Huang
    • H03M13/00H04J3/06
    • H03M13/333H03M13/09H04J3/0608H04J3/14H04J3/1641
    • A method and apparatus for enhancing frame alignment using cyclic redundancy check (“CRC”) corrections are disclosed. In one embodiment, a process of frame alignment searches a predefined bit pattern within a first multi-frame structure and provides an assumed frame boundary after identifying the predefined bit pattern in the first multi-frame structure. While calculating a CRC value in response to the assumed frame boundary, the process further corrects the CRC value in accordance with a saved residue and F-bits identified by the assumed frame boundary. The assumed frame boundary is subsequently verified by comparing the calculated CRC value with embedded CRC value obtained from a second multi-frame structure.
    • 公开了一种使用循环冗余校验(“CRC”)校正来增强帧对准的方法和装置。 在一个实施例中,帧对齐的过程在第一多帧结构内搜索预定义的位模式,并且在识别出第一多帧结构中的预定义位模式之后提供假定的帧边界。 在响应于假定的帧边界计算CRC值时,该过程进一步根据保留的残差和由假定的帧边界识别的F比特来校正CRC值。 随后通过将计算的CRC值与从第二多帧结构获得的嵌入CRC值进行比较来验证假定的帧边界。