PCR TIMING CONTROL IN VARIABLE BIT RATE (VBR) TRANSPORT STREAMS
摘要
In a method for transmitting data in packets in a transport stream the temporal relationship is stored in memory with each of the packets in that a timestamp is attached to each packet that reflects the exact arrival time of a data element of the packet. To accomplish this, a firmware counter called the Receive Timing Register (RTR) is clocked by a local oscillator to generate a Receive Timing Register value at the time the PCR reference bit arrives to create a timesta mp that is associated with each packet. The oscillator and firmware register are locate d on the card that receives the stream. Alternatively stuffing is applied to each packet to control the transmission rate by the length of the sequentially transmitted packets. This can be done at alternating faster and slower rates or can be applied between PCR packets.
申请公布号
CA2475808(A1)
申请公布日期
2005.01.29
申请号
CA20042475808
申请日期
2004.07.28
申请人
THORSTEINSON, THOMAS M.;SUBRAMONIAM, KUMARAN;COSENS, GEORGE;SHIMIZU, DAVID T.;BEAN, J. DESMOND
发明人
THORSTEINSON, THOMAS M.;SUBRAMONIAM, KUMARAN;COSENS, GEORGE;SHIMIZU, DAVID T.;BEAN, J. DESMOND