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US 8,619,879 B2Granted
Video processing system with layered video coding for fast channel change and methods for use therewith
AssigneeBroadcom Corporation
InventorsStephen Elliott Gordon, Jeyhan Karaoguz, Xuemin (Sherman) Chen, Michael Dove, David Rosmann, Thomas J. Quigley
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Abstract
A video processing system includes a video encoder that encodes a video stream into an independent video layer stream and a first dependent video layer stream based on a motion vector data or grayscale and color data.
Claims20
A video processing system comprising:
- a video encoder that encodes at least one video stream into an independent video layer stream and a first dependent video layer stream, wherein the independent video layer stream includes a first plurality of random access points having a first frequency, and wherein the first dependent video layer stream includes a second plurality of random access points having a second frequency;
- wherein a first mobile communication device receives the independent video layer stream of the at least one video stream, to begin decoding the independent video layer stream based on at least one of the first plurality of random access points and generates a reconstructed video signal based on the independent video layer stream, without the first dependent video layer stream;
- wherein a second mobile communication device receives the independent layer stream and the first dependent video layer stream of the at least one video stream, to begin decoding the first dependent video layer stream based on at least one of the second plurality of random access points, to synchronize the independent video layer stream and the first dependent video layer stream to form a synchronized stream, and to generate a reconstructed video signal based on the synchronized stream.
A mobile communications device comprising:
- a receiver for receiving a video stream encoded into an independent video layer stream and a first dependent video layer stream that includes data that is dependent on data from the independent video layer stream wherein the independent video layer stream includes a first plurality of random access points having a first frequency, and wherein the first dependent video layer stream includes a second plurality of random access points having a second frequency, and wherein the first frequency is greater than the second frequency;
- a video decoder, coupled to the receiver, that in a first mode of operation, begins decoding the independent video layer stream based on at least one of the first plurality of random access points and generates a reconstructed video signal based on the independent video layer stream, without the first dependent video layer stream, and wherein the video decoder, in a second mode of operation, begins decoding the first dependent video layer stream based on at least one of the second plurality of random access points, to synchronize the independent video layer stream and the first dependent video layer stream to form a synchronized stream, and to generate a reconstructed video signal based on the synchronized stream.
A method comprising:
- receiving an independent video layer stream, wherein the independent video layer stream includes a first plurality of random access points having a first frequency;
- and
- in a first mode of operation:
- decoding the independent video layer stream based on at least one of the first plurality of random access points;
- and
- generating a reconstructed video signal based on the decoded independent video layer stream, without the first dependent video layer stream;
- in a second mode of operation:
- receiving further a first dependent video layer stream, wherein the first dependent video layer stream includes a second plurality of random access points having a second frequency;
- decoding the independent video layer stream based on at least one of the first plurality of random access points;
- decoding the first dependent video layer stream based on at least one of the second plurality of random access points;
- and
- synchronizing the independent video layer stream and the first dependent video layer stream to form a synchronized stream;
- and
- generating a reconstructed video signal based on the synchronized stream.
11 more elements
Dependencies are inferred from the claim text.