Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2005-05-10
2005-05-10
Qureshi, Afsar (Department: 2667)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S538000, C375S240010, C348S384100, C348S390100
Reexamination Certificate
active
06891854
ABSTRACT:
Digitally compressed video/audio bit streams, when transmitted over digital communication channels such as digital subscriber loop (DSL) access networks, ATM networks, satellite, or wireless digital transmission facilities, can be corrupted due to lack of sufficient channel bandwidth. This invention describes schemes to ensure lossless transmission of bit streams containing pre-compressed video signals within the communication channels. The schemes herein comprises a rate conversion system that converts the bit rate of a pre-compressed video bit stream from one bit rate to another, and that is integrated with a digital communication channel, and to convey the maximum channel transmission rate to the rate conversion system to allow satisfactory transmission of the bit stream from the input of the rate converter through the transmission facility.
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Chen Wen H.
Wu Fang
Zhang Ji
Beyer Weaver & Thomas LLP
Cisco Technology Inc.
Qureshi Afsar
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