General Instrument Corporation

Other

Guofei Wu

Yuan-Yuan Young

John Larry Sanders

Robert S Nemiroff

Vincent C Liu

Randall Lewis Silagi

Vincent Cheng-Teh Liu

Apparatus and methods are provided for efficient collection and identification of program information contained in a plurality of multimedia transport streams. Requests for program information are matched against incoming program information as they are received from the incoming multimedia transport streams. The processing of the requests and the collection of program information are done asynchronously and simultaneously. This enables processing of program information from forty or more MPEG transport streams in such a way that their collection rate is reduced from several minutes to less than one second.

Methods and apparatus for rapid capture of program identifier data in a broadband transcoder multiplexer

Method and apparatus for processing transport stream packets received from a network for distribution to user terminals is described. In one embodiment, a pair of clock reference packets in the transport stream packets is identified. The pair of clock reference packets includes a first clock reference packet having an output time stamp and a second clock reference packet. A difference between a time value of the second clock reference packet and a time value of the first clock reference packet is computed. An output time stamp for the second clock reference packet is calculated in response to the output time stamp of the first clock reference packet and the difference.

Method and apparatus for processing transport stream packets to compensate for jitter

A method and apparatus for switching a source of an audiovisual program configured for distribution among a plurality of user terminals is described. In one example, a first real-time digital bitstream and a second real-time digital bitstream are received. The source is mapped to the first real-time digital bitstream. A request is received from a remote controller. The request is operative to switch the source of the audiovisual program. The source of the audiovisual program is switched to the second real-time digital bitstream in response to the request. Time stamp data in the second real-time digital bitstream is adjusted to provide a continuous time base for the audiovisual program.

Method and apparatus for switching a source of an audiovisual program configured for distribution among user terminals

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San Diego, CA, United States of America

Guofei Wu