Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Reexamination Certificate
2006-11-21
2006-11-21
Ferris, Derrick (Department: 2616)
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
C370S412000
Reexamination Certificate
active
07139241
ABSTRACT:
A method for splicing MPEG-2 encoded transport streams to prevent decoder buffer underflow. Emulation of the transport stream prior to transmission determines whether a decoder underflow would occur after a splice proposed at a predetermined time. When a potential underflow is determined for a decoder buffer, null packets are deleted prior to the time proposed for transmission for the splice, and an earlier splice time is recomputed. A time delay is added to presentation time stamp and the decoding time stamp. A relationship between the respective components involved is described to calculate the null packets to be deleted as well as to calculate the time delay to be added to a presentation time stamp and to a decoding time stamp, whereby decoder buffer underflow is prevented.
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Ferris Derrick
Optibase Ltd.
Pearl Cohen Zedek Latzer LLP
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