Patent application number | Description | Published |
20090080510 | Information Signal, Apparatus and Method for Encoding an Information Content, and Apparatus and Method for Error Correcting an Information Signal - A scalable information signal is protected in a more efficient and/or safe way by adopting the inter-relationship among the plurality of portions of different levels within the information signal in FEC protecting the information signal. In particular, portions of the information signal representing the information content at a higher level should have associated therewith redundancy information which is dependent not only on that part of this portion being disjoint to a respective overlapping lower level portion. Rather, redundancy information should also be dependent on the latter part so as to increase the chances of success of forward error correcting an error within the lower level portion at the reception side. | 03-26-2009 |
20110110436 | Flexible Sub-Stream Referencing Within a Transport Data Stream - A representation of a video sequence having a first data stream comprising first data portions, the first data portions comprising first timing information and a second data stream, the second data stream comprising a second data portion having second timing information, may be derived. association information is associated to a second data portion of the second data stream, the association information indicating a predetermined first data portion of the first data stream. A transport stream comprising the first and the second data stream as the representation of the video sequence is generated. | 05-12-2011 |
20110129025 | APPARATUS FOR ASSIGNING AND ESTIMATING TRANSMISSION SYMBOLS - An apparatus for assigning transmission symbols to a media data stream of information symbols is described, the media data stream including a first substream for representing a media content in a basic quality and a second substream including additional data for representing the media content, along with the first substream, in an improved quality. The apparatus includes a first means for assigning first transmission symbols to the information symbols of the first substream and a second means for assigning second transmission symbols to the information symbols of the second substream, the first transmission symbols being transmissible, via a transmission channel, with reduced error probability as compared to the second transmission symbols. | 06-02-2011 |
20140105293 | SAMPLE ARRAY CODING FOR LOW-DELAY - The entropy coding of a current part of a predetermined entropy slice is based on, not only, the respective probability estimations of the predetermined entropy slice as adapted using the previously coded part of the predetermined entropy slice, but also probability estimations as used in the entropy coding of a spatially neighboring, in entropy slice order preceding entropy slice at a neighboring part thereof. Thereby, the probability estimations used in entropy coding are adapted to the actual symbol statistics more closely, thereby lowering the coding efficiency decrease normally caused by lower-delay concepts. Temporal interrelationships are exploited additionally or alternatively. | 04-17-2014 |
20140210652 | ENTROPY CODING - An encoder for encoding a sequence of symbols is described which has an assigner configured to assign a number of parameters to each symbol of the sequence of symbols based on information contained within previous symbols of the sequence of symbols; a plurality of entropy encoders each of which is configured to convert the symbols forwarded to the respective entropy encoder into a respective bitstream; and a selector configured to forward each symbol to a selected one of the plurality of entropy encoders, the selection depending on the number of parameters assigned to the respective symbol. | 07-31-2014 |
20140219230 | RESOURCE MANAGEMENT CONCEPT - Resource management such as network radio resource management in wireless networks, is described in connection with different aspects. | 08-07-2014 |
20140250344 | INTERLEAVING FOR LAYER-AWARE FORWARD ERROR CORRECTION - An error correcting encoder includes an error correcting data generator for receiving payload data belonging to a first category, for receiving payload data belonging to a second category, for determining first error correcting data for the first category payload data, and for determining second error correcting data for the second category payload data. The error correcting encoder further includes an interleaver for interleaving at least the second error correcting data and the second category payload data with each other. A first interleaving length relative to an interleaving of the first error correcting data and the first category payload data differs from a second interleaving length relative to the interleaving of the second error correcting data and the second category payload data. A corresponding error correcting decoder and methods for error correcting encoding/decoding are also disclosed. According to alternative embodiments, a payload interleaving length is different from an error correcting data interleaving length. | 09-04-2014 |
20140334557 | CODING CONCEPT ALLOWING PARALLEL PROCESSING, TRANSPORT DEMULTIPLEXER AND VIDEO BITSTREAM - A raw byte sequence payload describing a picture in slices, WPP substreams or tiles and coded using context-adaptive binary arithmetic coding is subdivided into tranches with continuing the context-adaptive binary arithmetic coding probability adaptation across tranche boundaries. Thereby, tranche boundaries additionally introduced within slices, WPP substreams or tiles do not lead to a reduction in the entropy coding efficiency of these entities. However, the tranches are smaller than the original slices, WPP substreams or tiles and accordingly they may be transmitted earlier, i.e. with lower delay, than the un-chopped original entities. According to another aspect combinable with the first aspect, substream marker NAL units are used within a sequence of NAL units of a video bitstream to enable a transport demultiplexer to assign data of slices within NAL units to the corresponding substreams or tiles so as to be able to, in parallel, serve a multi-threaded decoder with the corresponding substreams or tiles. | 11-13-2014 |
20150023409 | LOW DELAY PICTURE CODING - Parallel processing concepts such as wavefront parallel processing, are realized with a reduced end-to-end delay by giving up the usual slice concept according to which slices are either coded/decoded completely independent from areas of the picture outside of the respective slice, or at least independent from areas outside the respective slice as far as the entropy coding is concerned, namely in favor of slices of different modes, namely ones called dependent slices which allow for interdependencies across slice boundaries, and others which do not, called normal slices, for example. Combined with the aspect or not, WPP processing concept is made more efficiently by using the slices' start syntax portions to locate WPP entry points. | 01-22-2015 |
20150023434 | SCALABLE DATA STREAM AND NETWORK ENTITY - 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. | 01-22-2015 |