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US 12,707,071 B2Granted
Method for signaling a step-wise temporal sub-layer access sample
AssigneeDolby International AB
InventorSachin G. Deshpande
Life of this patent
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Abstract
An electronic device for encoding a picture is described. The electronic device includes a processor and instructions stored in memory that are in electronic communication with the processor. The instructions are executable to encode a step-wise temporal sub-layer access (STSA) sample grouping. The instructions are further executable to send and/or store the STSA sample grouping.
Claims13
A method for encoding a picture, the method comprising:
- encoding a step-wise temporal sub-layer access (STSA) sample grouping that allows determining when to switch to a new temporal layer based on the STSA sample grouping,
- wherein the STSA sample grouping is a group of STSA samples, the STSA sample grouping comprises a next STSA upswitching distance parameter and a next STSA sample distance parameter, wherein the next STSA upswitching distance parameter is different from the next STSA sample distance parameter, wherein the next STSA sample distance parameter indicates a distance of a next temporal layer switching point in a current temporal layer, wherein the next STSA upswitching distance parameter indicates a distance of a next temporal layer up switching point in a temporal layer higher than the current temporal layer, and wherein a network access layer (NAL) unit type indicates whether a picture is a STSA picture;
- and
- wherein encoding the picture includes a transformation step and quantization step to produce transformed and quantized coefficients.
1 more element
A method of transmitting a bitstream of an encoded picture, wherein the picture has been encoded by:
- encoding a bitstream including a step-wise temporal sub-layer access (STSA) sample grouping that allows determining when to switch to a new temporal layer,
- wherein the STSA sample grouping is a group of STSA samples, wherein the STSA sample grouping comprises a next STSA upswitching distance parameter and a next STSA sample distance parameter, wherein the next STSA upswitching distance parameter is different from the next STSA sample distance parameter, wherein the next STSA sample distance parameter indicates a distance of a next temporal layer switching point in a current temporal layer, wherein the next STSA upswitching distance parameter indicates a distance of a next temporal layer up switching point in a temporal layer higher than the current temporal layer, and wherein a network access layer (NAL) unit type indicates whether a picture is a STSA picture;
- and
- wherein encoding the picture includes a transformation step and quantization step to produce transformed and quantized coefficients.
1 more element
A method for decoding a picture, the method comprising:
- receiving an audio-visual bitstream;
- obtaining a step-wise temporal sublayer access (STSA) sample grouping;
- decoding the STSA sample grouping;
- and
- determining when to switch to a new temporal layer based on the STSA sample grouping, wherein the STSA sample grouping is a group of STSA samples, wherein the STSA sample grouping comprises a next STSA upswitching distance parameter and a next STSA sample distance parameter, wherein the next STSA upswitching distance parameter is different from the next STSA sample distance parameter, wherein the next STSA sample distance parameter indicates a distance of a next temporal layer switching point in a current temporal layer, wherein the next STSA upswitching distance parameter indicates a distance of a next temporal layer up switching point in a temporal layer higher than the current temporal layer, and wherein a network access layer (NAL) unit type indicates whether a picture is a STSA picture;
- and
- wherein decoding the picture includes an inverse quantized and inverse transformation step to produce a decoded residual signal.
4 more elements
Dependencies are inferred from the claim text.