IP Library › Granted Patent US 12,495,150
Granted Patent B2
US 12,495,150 · App. 18/411,715 · Granted Dec 9, 2025

Scalable data stream and network entity

Inventors: Thomas Schierl (Berlin, DE); Valeri George (Berlin, DE); Anastasia Henkel (Berlin, DE); Detlev Marpe (Berlin, DE); Karsten Grüneberg (Berlin, DE); Robert Skupin (Berlin, DE)
Assignee: Dolby Video Compression, LLC
H04N19/188H04N19/13H04N19/174H04N19/436H04N19/46H04N19/463H04N19/70H04N19/91H04N19/593
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Quick Facts
Patent No.
US 12,495,150
App. No.
18/411,715
Granted
Dec 9, 2025
Kind
B2
Abstract

The handling of scalable data streams by network entities is rendered less complex by, in the data stream, accompanying packets which actually carry data by packets of a different packet type which have a scalability axes descriptor defining the number of scalability axes and a semantic meaning thereof. In another aspect, the handling of scalable data streams by network entities is rendered more efficient by conveying level and/or profile descriptors using packets other than the data carrying packets, with profile and/or level descriptors being divided up into a first set explicitly signaling the definition of the available coding option set and/or available syntax element value range for a respective operation point, and a second set of profile and/or level descriptors which signal the definition of the available coding option set and/or available syntax element value range for their respective operation points by reference another profile and/or level descriptor.

Claims (33)

1 . An apparatus comprising: a processor comprising hardware configured to:

process a data stream including packets having encoded information related to a video, the data stream including:

a sequence of flags each indicating whether an associated scalability type of a plurality of scalability types is present or not,

a first syntax element identifying an operation point associated with a first packet of the packets, wherein each portion of different portions of the first syntax element is: (a) associated with a corresponding scalability type of the plurality of scalability types, and (b) a measure of a position of the operation point associated with the first packet along a dimension of the corresponding scalability type, and

the first packet including data, which when parsed by a decoder, contribute to reconstruction of at least a portion of the video at the operation point associated with the first packet,

obtain an operation point identifier associated with the first packet in accordance with the first syntax element, and

decode the data of the first packet based on the operation point identifier to reconstruct at least a portion of the video.

2 . The apparatus of claim 1 , the data stream further including a second syntax element, which provides index information to determine association of each portion of the first syntax element with the corresponding scalability type.

3 . The apparatus of claim 1 , wherein the processor is configured to render a selection of the packets of the first packet type.

4 . The apparatus of claim 1 , wherein the first packet is of a first packet type, and the processor is configured to read, from a packet of a second packet type, a sequence of profile or level descriptors individually associated with at least a subset of a plurality of operation points, each profile or level descriptor defining an available coding option set or an available syntax element value range which a syntax of packets having the operation point associated with the respective profile or level descriptor, associated therewith, obey,

wherein the processor is configured to,

responsive to a signaling in the data stream, read from a first set of the profile or level descriptors the definition of the available coding option set or available syntax element value range, and

read, for a second, disjoint non-empty set of the profile or level descriptors, a reference to another, profile or level descriptor and derive the definition of the available coding option set or available syntax element value range of the second, disjoint non-empty set of the profile or level descriptors from the respective referenced profile or level descriptor.

5 . The apparatus of claim 4 , wherein each profile or level descriptor comprises a field identifying the operation point the respective profile or level descriptor is associated with.

6 . The apparatus of claim 5 , wherein the second, disjoint non-empty set of the profile or level descriptors signal the definition of the available coding option set or available syntax element value range by referencing another profile or level descriptor using an explicit signaling of the field of the referenced profile or level descriptor.

7 . The apparatus of claim 4 , wherein the processor is configured to read, from the packets of the second packet type, also, for each of at least a subset of the plurality of operation points, a syntax identifying other operation points of the plurality of operation points, identified by lower operation point identifiers, which the respective operation point is an extension of, thereby indicating the sequential operation point order.

8 . The apparatus of claim 7 , wherein each field identifies the respective operation point using a bit-sequence common to the operation point identifiers identifying the respective operation point.

9 . The apparatus of claim 2 , wherein the first packet includes the first and second syntax elements, and the operation point identifier identifies the scalability type from the plurality of scalability types for the operation point associated with the first packet.

10 . An encoder comprising:

a processor comprising hardware configured to:

encode, into a data stream, packets having information related to a video, a sequence of flags each indicating whether an associated scalability type of a plurality of scalability types is present or not, and a first syntax element identifying an operation point associated with a first packet of the packets, wherein:

each portion of different portions of the first syntax element is: (a) associated with a corresponding scalability type of the plurality of scalability types, and (b) a measure of a position of the operation point associated with the first packet along a dimension of the corresponding scalability type, and

the first packet including data, which when parsed by a decoder, contribute to reconstruction of at least a portion of the video at the operation point associated with the first packet,

wherein an operation point identifier associated with the first packet is obtained in accordance with the first syntax element.

11 . The encoder of claim 10 , the processor is configured to encode a second syntax element, which provides index information to determine association of each portion of the first syntax element with the corresponding scalability type.

12 . The encoder of claim 10 , wherein the first packet is of a first packet type, and the processor is configured to encode, into a packet of a second packet type, a sequence of profile or level descriptors individually associated with at least a subset of a plurality of operation points, each profile or level descriptor defining an available coding option set or an available syntax element value range which a syntax of packets having the operation point associated with the respective profile or level descriptor, associated therewith, obey.

13 . The encoder of claim 10 , wherein the first syntax element is of a fixed bit length.

14 . A method, comprising:

encoding, into a data stream, packets having information related to a video, a sequence of flags each indicating whether an associated scalability type of a plurality of scalability types is present or not, and a first syntax element identifying an operation point associated with a first packet of the packets, wherein:

each portion of different portions of the first syntax element is: (a) associated with a corresponding scalability type of the plurality of scalability types, and (b) a measure of a position of the operation point associated with the first packet along a dimension of the corresponding scalability type, and

the first packet including data, which when parsed by a decoder, contribute to reconstruction of at least a portion of the video at the operation point associated with the first packet,

wherein an operation point identifier associated with the first packet is obtained in accordance with the first syntax element.

15 . A method for transmitting a data stream into which packets having information related to a video are encoded according to the method of claim 14 .

Assignments (2)
CHANGE OF NAME Recorded Jan 30, 2026
From: GE VIDEO COMPRESSION, LLC
To: DOLBY VIDEO COMPRESSION, LLC
Reel/Frame 074536/0781 →
CHANGE OF NAME Recorded Nov 26, 2024
From: GE VIDEO COMPRESSION, LLC
To: DOLBY VIDEO COMPRESSION, LLC
Reel/Frame 069450/0772 →
Continuity (8)
Continuation 17587849 · Jan 28, 2022
Continuation 15930937 · May 13, 2020
Continuation 16025319 · Jul 2, 2018
Continuation 14510264 · Oct 9, 2014
Continuation PCTEP2013057803 · Apr 15, 2013
Provisional Application 61666185 · Jun 29, 2012
Provisional Application 61624098 · Apr 13, 2012
Related Publication 20240155141A1 · May 9, 2024
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