US 2014/0192870 A1Published application

System And Method For Providing Error Resilience, Random Access And Rate Control In Scalable Video Communications

AssigneeVidyo, Inc.

InventorsAlexandros Eleftheriadis, Danny Hong, Ofer Shapiro, Thomas Wiegand

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Abstract

Systems and methods for error resilient transmission, rate control, and random access in video communication systems that use scalable video coding are provided. Error resilience is obtained by using information from low resolution layers to conceal or compensate loss of high resolution layer information. The same mechanism is used for rate control by selectively eliminating high resolution layer information from transmitted signals, which elimination can be compensated at the receiver using information from low resolution layers. Further, random access or switching between low and high resolutions is also achieved by using information from low resolution layers to compensate for high resolution spatial layer packets that may have not been received prior to the switching time.

Claims33

Dependent claims

A digital video decoding system, the system comprising:

a decoder configured to decode a received digital video signal, which is coded in a scalable video coding format supporting temporal scalability and at least one of spatial and quality scalability,
wherein the scalable video coding format for spatial scalability includes a base spatial and at least one spatial enhancement layer, for quality scalability includes a base quality layer and at least one quality enhancement layer, and for temporal scalability includes a base temporal layer and at least one temporal enhancement layer, wherein the base temporal layers and enhancement temporal layers are interlinked by a threaded picture prediction structure for at least one of the spatial or quality scalability layers,
wherein, for decoding a picture at a target spatial or quality layer higher than the corresponding base layer, the decoder is configured to use coded information from a spatial or quality layer of said picture lower than the target layer in the threaded prediction structure when a portion of the target layer's coded information is lost or not available.

A method for decoding a digital video signal, comprising:

receiving the digital video signal at a decoder, the digital video signal being coded in a scalable video coding format supporting temporal scalability and at least one of spatial and quality scalability, wherein the scalable video coding format for spatial scalability includes a base spatial and at least one spatial enhancement layer, for quality scalability includes a base quality layer and at least one quality enhancement layer, and for temporal scalability includes a base temporal layer and at least one temporal enhancement layer, wherein the base temporal layers and enhancement temporal layers are interlinked by a threaded picture prediction structure for at least one of the spatial or quality scalability layers;
and
decoding a picture at a target spatial or quality layer higher than the corresponding base layer using coded information from a spatial or quality layer of said picture lower than the target layer in the threaded prediction structure when a portion of the target layer's coded information is lost or not available.

A non-transitory computer readable medium comprising a set of executable instructions to direct a processor to decode a digital video signal, by:

receiving the digital video signal at a decoder, the digital video signal being coded in a scalable video coding format supporting temporal scalability and at least one of spatial and quality scalability, wherein the scalable video coding format for spatial scalability includes a base spatial and at least one spatial enhancement layer, for quality scalability includes a base quality layer and at least one quality enhancement layer, and for temporal scalability includes a base temporal layer and at least one temporal enhancement layer, wherein the base temporal layers and enhancement temporal layers are interlinked by a threaded picture prediction structure for at least one of the spatial or quality scalability layers;
and
decoding a picture at a target spatial or quality layer higher than the corresponding base layer using coded information from a spatial or quality layer of said picture lower than the target layer in the threaded prediction structure when a portion of the target layer's coded information is lost or not available.

Dependencies are inferred from the claim text.

Facts

Application: 14/166,640Filed 28 Jan 2014
Priority: 3 Mar 2006
Published: 10 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04N 7/15
Systems for two-way working: conference systems
H04N 19/29
Using video object coding: involving scalability at the object level, e.g. video object layer [VOL]
H04N 19/30
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals: using hierarchical techniques, e.g. scalability
H04N 19/31
Using hierarchical techniques, e.g. scalability: in the temporal domain

Family

Application60/778,760Us provisional application · filed 3 Mar 2006
Application60/786,997Us provisional application · filed 29 Mar 2006
Application60/787,031Us provisional application · filed 29 Mar 2006
Application60/829,609Us provisional application · filed 16 Oct 2006
Application60/862,510Us provisional application · filed 23 Oct 2006
Application60/884,148Us provisional application · filed 9 Jan 2007
Application11/682,263Continuation · filed 5 Mar 2007
Application14/166,640Continuation
US 2007/0230566 A1Published application
US 8,693,538 B2Related patent
US 9,270,939 B2Related patent
US 2014/0192870 A1This patent

From the US filing history. Foreign family members aren’t listed.

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