Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2008-04-21
2010-10-26
Jung, Min (Department: 2472)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
C370S537000, C725S098000, C725S100000
Reexamination Certificate
active
07822068
ABSTRACT:
A method of preparing data streams to facilitate seamless switching between such streams by a switching device to produce an output data stream without any switching artifacts. Bi-directional switching between any plurality of data streams is supported. The data streams are divided into segments, wherein the segments include synchronized starting points and end points. The data rate is increased before an end point of a segment, to create switch gaps between the segments. Increasing the data rate can include increasing a bandwidth of the plurality of data streams, for example by multiplexing, or compressing the data.The present invention can be used, for example, with MPEG or AC-3 encoded audio and MPEG encoded video segments that are multiplexed into MPEG-2 transport streams.Also included are specific methods for preparing MPEG video streams and multiplexing MPEG video with MPEG or AC-3 audio streams to allow a receiver to create seamless transitions between individually encoded segments.
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Booth Rick
Haberman Seth
Jansen Alex
Niemeijer Geritt
Jung Min
K&L Gates LLP
Visible World, Inc.
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