Rate limited control mechanism for MPEG PCR dejittering,申请号US20040829568-传众专利搜索

Rate limited control mechanism for MPEG PCR dejittering

申请公布号：US7376158(B2)

申请号：US20040829568

申请日期：2004.04.22

申请公布日期：2008.05.20

申请人：

SCIENTIFIC-ATLANTA, INC.

发明人：WOODWARD, JR. WILLIAM D.

分类号：H04J3/06;H04N7/62

主分类号：H04J3/06

摘要：A system and method for guaranteeing an upper bound on output jitter while maintaining maximum loop bandwidth. At least a portion of a plurality of transport packets stored in a buffer include a first timestamp value. A first phase locked loop receives a stream of first timestamp values and generates a variable rate timing signal stream that conveys a variation rate and a phase accumulation rate of the stream of first timestamp values to the first loop. A second phase locked loop receives the variable rate timing signal stream and generates a stable rate timing signal stream conveying the average rate of the variable rate timing signal stream. A interval timer is responsive to the stable rate timing signal stream in order to release the transport packets from the buffer.