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1. (WO2013153227) SCALABLE DATA STREAM AND NETWORK ENTITY

Pub. No.:    WO/2013/153227    International Application No.:    PCT/EP2013/057803
Publication Date: Fri Oct 18 01:59:59 CEST 2013 International Filing Date: Tue Apr 16 01:59:59 CEST 2013
IPC: H04N 7/26
Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Inventors: SCHIERL, Thomas
GEORGE, Valeri
HENKEL, Anastasia
MARPE, Detlev
GRÜNEBERG, Karsten
SKUPIN, Robert
Title: SCALABLE DATA STREAM AND NETWORK ENTITY
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. By this measure, it is sufficient if the data carrying packets comprise an operation point identifier identifying an operation point associated with a respective packet within the scalability space spanned by the scalability axis. By this measure, the packet operation point identifiers provide enough information to a network entity so as to associate these packets with their operation point in the scalability space provided the network entity has access to this scalability axes descriptor provided by the packet of the predetermined packet type. 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.