Patent EP0634871A2 successfully refreshed from Google Patents.
EP0634871A2
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EP
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Scalable encoding and decoding of high-resolution progressive video
Assignee: AT&T Inc
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Filing: 1994-07-06
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Granted: —
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Expires: 2014-07-06
Abstract
Abstract High-resolution, progressive format video signals (on C3100) having high frame rates may be encoded by a base layer encoder (C3140) and an enhancement layer encoder (C3180) to provide two kinds of encoded video signals which share a common output channel (C3260). These encoded video signals are received at an input (C3270) of a video receiver which may use one or both of the two kinds of encoded video signal. Relatively lower performance high-definition televisions may thus receive video signals from higher performance transmitters and produce satisfactory pictures. Higher performance HDTVs will be able to utilize the full performance capabilities of these video signals.
Inventors
- 👤 Barin Geoffrey Haskell
- 👤 Atul Puri
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 21:32
CPC Classifications
H; H04; H04N; H04N19/00; H04N19/50; H04N19/503; H04N19/51; H04N19/577; H04N19/10; H04N19/102; H04N19/103; H04N19/112; H04N19/134; H04N19/136; H04N19/169; H04N19/187; H04N19/587; H04N19/59; H04N19/60; H04N19/61; H04N19/80; H04N19/85; H04N19/146; H04N19/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
188 words
A multi-layer video encoder, comprising: an input for receiving progressive format video signals representing a first resolution level at a predetermined first frame rate; a base layer encoding means responsive to the input for producing encoded video signals in a predetermined format, at a predetermined resolution level, and at a predetermined frame rate, at least one of the format, resolution level, and frame rate of the encoded video signals being different from the format, resolution level, and frame rate of the video signals received by the input; an enhancement layer encoding means responsive to the input for producing encoded video signals in a predetermined format at a predetermined resolution level and at a predetermined frame rate, at least one of the format, resolution level, and frame rate of the encoded video signals produced by the enhancement layer encoding means being different from the format, resolution level, and frame rate of the encoded video signals produced by the base layer encoding means; and an output channel having a predetermined bandwidth shared by the encoded video signals produced by the base layer encoding means and the enhancement layer encoding means.
Claim 2
Dependent Claim
41 words
A decoder for receiving multi-layer encoded video signals from an output channel in an encoder as in claim 1 for producing an unencoded video signal having one of a plurality of predetermined quality levels in response to the received video signal.
Claim 3
Dependent Claim
117 words
A multi-layer video encoder, comprising: an input for receiving progressive format video signals representing a first resolution level at a predetermined first frame rate; a base layer encoding means responsive to the input for producing progressive format encoded video signals representing a second resolution level less than the first resolution level at a predetermined second frame rate less than the first frame rate; an enhancement layer encoding means responsive to the input for producing progressive format encoded video signals at the first resolution level and at the first frame rate; and an output channel having a predetermined bandwidth for carrying the encoded video signals produced by the base layer encoding means and the enhancement layer encoding means.
Claim 4
Dependent Claim
44 words
The multi-layer video encoder of claim 3, further comprising: a means for causing the encoded video signals from the base layer encoding means and the enhancement layer coding means to adaptively share the bandwidth of the output channel in response to a predetermined parameter.
Claim 5
Dependent Claim
144 words
A multi-layer video encoder, comprising: an input for receiving progressive format video signals representing a first resolution level at a predetermined first frame rate; a means for demultiplexing the video signals received on the input into a first demultiplexed video signal at a second frame rate less than the first frame rate and a second demultiplexed video signal at a third frame rate less than the first frame rate; a base layer encoding means responsive to the first demultiplexed video signal for producing a progressive format encoded video signal having the second frame rate; an enhancement layer encoding means responsive to the second demultiplexed video signal for producing a progressive format encoded video signal having the third frame rate; and an output channel having a predetermined bandwidth for carrying the encoded video signals produced by the base encoding means and the enhancement encoding means.
Claim 6
Dependent Claim
45 words
The multi-layer video encoder of claim 5, further comprising: a means for causing the encoded video signals produced by the base layer encoding means and the enhancement layer coding means to adaptively share the bandwidth of the output channel in response to a predetermined parameter.
Claim 7
Dependent Claim
111 words
A multi-level video encoder, comprising: an input for receiving progressive format video signals having a predetermined first resolution level and a predetermined first frame rate; a means for producing an interlaced format video signal in response to the progressive format video signals; a base layer encoder for producing interlaced format encoded video signals in response to the means for producing an interlaced format video signal; an enhancement layer encoder for producing progressive format encoded video signals in response to the video signals received by the input; and an output channel having a predetermined bandwidth for carrying the encoded video signals produced by the base layer encoder and the enhancement layer encoder.
Claim 8
Dependent Claim
45 words
The multi-layer video encoder of claim 7, further comprising: a means for causing the encoded video signals produced by the base layer encoding means and the enhancement layer coding means to adaptively share the bandwidth of the output channel in response to a predetermined parameter.
Claim 9
Dependent Claim
121 words
A multi-level video encoder, comprising: an input for receiving progressive format video signals having a predetermined first resolution level and a predetermined first frame rate; a means for converting the video signals received by the input into a first interlaced format video signal and a second interlaced format video signal; a base layer encoder for producing first interlaced format encoded video signals in response to the first interlaced format video signal; an enhancement layer encoder for producing second interlaced format encoded video signals in response to the second interlaced format video signals received by the input; and an output channel having a predetermined bandwidth for carrying the encoded video signals produced by the base layer encoder and the enhancement layer encoder.
References Cited (Backward Citations)
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