EP1687984A1 - Procede de production et/ou de traitement d'une description de flux de donnees - Google Patents

Procede de production et/ou de traitement d'une description de flux de donnees

Info

Publication number
EP1687984A1
EP1687984A1 EP04819232A EP04819232A EP1687984A1 EP 1687984 A1 EP1687984 A1 EP 1687984A1 EP 04819232 A EP04819232 A EP 04819232A EP 04819232 A EP04819232 A EP 04819232A EP 1687984 A1 EP1687984 A1 EP 1687984A1
Authority
EP
European Patent Office
Prior art keywords
data stream
description
stream description
process unit
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP04819232A
Other languages
German (de)
English (en)
Inventor
Jörg Heuer
Andreas Hutter
Gabriel Panis
Christian Timmerer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1687984A1 publication Critical patent/EP1687984A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H04N21/2353—Processing of additional data, e.g. scrambling of additional data or processing content descriptors specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream

Definitions

  • the invention relates to a method and a device for generating and / or processing a data stream description, in particular an XML-based data stream description.
  • XML extensible markup language
  • XML schema language definition A more detailed description of the XML schema language definition and the definition of XML structures, data types and content models made possible by this can be found in references [1], [2] and [3].
  • the generic processor In the descriptions of data streams known from the prior art, the generic processor must read the entire description for a transformation of the data stream description or for an adaptation of the data stream in order to make the necessary adjustments in the data stream description or in To determine data stream. This is disadvantageous, since enough memory must be made available in the generic processor for this and, with the start of the adaptation, one has to wait until the processor has received the entire description of the data stream. This is a fundamental problem, particularly in the case of broadcast services, such as digital television.
  • the aim of the present invention is therefore to create a method for generating and successively processing a data stream description, in which the data stream description generated with the method enables simple and efficient adaptation of the data stream on which the data stream description is based by means of a generic processor.
  • a data stream description is generated and / or processed, with which sections of a data stream are described and / or referenced and / or classified and which can be transformed with a transformation by means of a processor, the transformed data stream description making it possible to adapt the data stream.
  • the transformation of the data stream description does not have to be carried out in a separate method step, but can form an implicit part of the adaptation of the data stream.
  • the method is characterized in that one or more portions of the data stream description be referred to as process units, wherein a processing unit containing all the information from the data stream description, which are ⁇ zessaku necessary for the transformation of the process unit by means of the processor in a transformed Pro without that during the transformation of the process unit, access to sections of the data stream description has to be made outside the process unit.
  • the data stream description is preferably an XML-based data stream description which contains in particular gBSD and / or BSD units.
  • the method according to the invention has the advantage that, for the transformation of data stream descriptions and / or for the adaptation of data streams, individual process units and the corresponding sections of the data stream can also be read in and processed in a processor.
  • the processor uses less memory for the transformation, or adaptation and can stream descriptions process quicker, because it functions to access Informa ⁇ less memory must browse.
  • the successive adaptation of a data stream in small process units in a small memory only requires a slight delay. This is particularly important for broadcast and streaming applications.
  • At least one process unit comprises two or more parts which do not follow one another in the data stream description. Furthermore, sections of the data stream which are not consecutive can be described by a process unit.
  • At least a portion is a persistent part ⁇ area in at least one process unit which contains information, the following in the transformation of the at least one processing unit processing units can be used.
  • a persistent subarea can be characterized as a subarea of at least one process unit that describes information from the data stream that can be used in the adaptation of sections of the data stream that are described by process units that follow the at least one process unit. In this way, a partial area of a data stream description or a section of a data stream becomes fixed that is permanently required by the processor in the transformation of the data stream description or adaptation of the data stream.
  • the method according to the invention can be signaled how long the just described persistent sub-areas of the process unit and / or the sections of the data stream that are described by the sub-areas in a memory unit of the processor for transforming the data stream description and / or adapting the data stream are to be saved. It can also be signaled that a persistent partial area of a process unit stored in a memory of a processor is to be deleted.
  • the maximum memory size of the process units and / or the sections of the data stream described by the process units is signaled.
  • the processor can, if necessary, check whether sufficient memory is available before processing the data stream description and / or the data stream described. If this is not the case, the processing can be carried out by another processor, for example.
  • the markings and signaling carried out in the method according to the invention are preferably stored in a separate data stream and / or in the data stream description.
  • the invention also includes a device which is designed such that the method according to the invention can be carried out with the device.
  • the device is in particular part of a device for transforming a data stream description and / or adapting a data stream.
  • Figure 1 is a schematic representation of a method according to the invention for generating and successively processing a data stream description.
  • FIG. 1 shows a data stream DS in the form of a bit stream which comprises a multiplicity of smaller sections DS-F.
  • FIG. 1 also shows a corresponding data stream description gBSD, which describes the structure of the data stream DS and which is based on the "generic bitstream description" already mentioned in the introduction to the description (see reference [5]).
  • the gBSD data stream description is also a bit stream that comprises a large number of gBSD units gBSDU (see reference [5]).
  • individual process units PU of the data stream description gBSD are identified, the process units in turn consisting of several gBSD units gBSDU.
  • the individual process units PU comprise selected descriptions of parts of the data stream DS, the selected descriptions being combined into process units PU in such a way that the process units can be processed separately for a subsequent transformation T of the data stream description without access to sections during the transformation the
  • gBSD-P denotes a processor which carries out a transformation T of the data stream description.
  • the processor gBSD-P delivers a transformed data stream description which comprises individual transformed process units T-gBSD-PU.
  • the processor can process the process units for transformation individually, whereas according to the prior art the entire data stream description must be read.
  • the processor gBSD-P thus requires a smaller memory and does not already have to use the entire current for processing have received.
  • the individual transformed process units T-gBSD-PU then serve to carry out an adaptation of the data stream based on the transformed process units in a processor DS-P.
  • the processor DS-P finally delivers individual adapted sections A-DS-F of the data stream.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Library & Information Science (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

L'invention concerne un procédé de production et/ou de traitement d'une description de flux de données (gBSD). Avec la description de flux de données, des sections (PU) d'un flux de données (DS) sont décrites et/ou référencées et/ou classées. La description du flux de données peut être transformée par un processeur (gBSD-P) à l'aide d'une transformée (T), la description de flux de données transformée permettant une adaptation du flux de données. Ce procédé est caractérisé en ce qu'au moins une section de la description du flux de données est identifiée comme unité processeur, une unité processeur contenant toutes les informations de la description de flux de données, lesquelles informations étant nécessaires à la transformation de l'unité processeur par le processeur en une unité processeur transformée (T-gBSD-PU) sans que, lors de la transformation, il y ait accès aux sections de la description de flux de données situées en dehors de l'unité processeur.
EP04819232A 2003-11-28 2004-10-26 Procede de production et/ou de traitement d'une description de flux de donnees Ceased EP1687984A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10355608 2003-11-28
PCT/EP2004/052663 WO2005053315A1 (fr) 2003-11-28 2004-10-26 Procede de production et/ou de traitement d'une description de flux de donnees

Publications (1)

Publication Number Publication Date
EP1687984A1 true EP1687984A1 (fr) 2006-08-09

Family

ID=34625341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04819232A Ceased EP1687984A1 (fr) 2003-11-28 2004-10-26 Procede de production et/ou de traitement d'une description de flux de donnees

Country Status (6)

Country Link
US (1) US7769879B2 (fr)
EP (1) EP1687984A1 (fr)
KR (1) KR101274580B1 (fr)
CN (1) CN100566410C (fr)
RU (1) RU2338244C2 (fr)
WO (1) WO2005053315A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120144053A1 (en) * 2010-12-01 2012-06-07 Microsoft Corporation Light Weight Transformation for Media

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6546421B1 (en) * 1999-06-30 2003-04-08 Siemens Corporate Research, Inc. System and method for automatic selection of internet data streams
BR0107329A (pt) * 2000-10-17 2002-08-27 Koninkl Philips Electronics Nv Processo de codificação para codificar um elemento de descrição de uma instância de um esquema tipo xml, processo de decodificação para decodificar um fragmento compreendendo um conteúdo e uma sequência de informação de identificação, codificador para codificar um elemento de descrição de uma instância de um esquema tipo xml, decodificador para decodificar um fragmento compreendendo um conteúdo e uma sequência de informação de identificação, sistema de transmissão, sinal para transmissão através de uma rede de transmissão, e, tabela destinada a ser usada em um codificador
DE50208271D1 (de) 2001-06-25 2006-11-09 Siemens Ag System zur verbesserten encodierung/decodierung von strukturierten, insbesondere xml-basierten, dokumenten sowie verfahren und vorrichtungen zur verbesserten encodierung/decodierung von binären repräsentationen von solchen dokumenten
DE10218812A1 (de) * 2002-04-26 2003-11-20 Siemens Ag Generische Datenstrombeschreibung
US7251277B2 (en) * 2002-12-04 2007-07-31 International Business Machines Corporation Efficient means for creating MPEG-4 textual representation from MPEG-4 intermedia format

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005053315A1 *

Also Published As

Publication number Publication date
RU2006122943A (ru) 2008-01-10
US7769879B2 (en) 2010-08-03
KR101274580B1 (ko) 2013-06-13
RU2338244C2 (ru) 2008-11-10
CN100566410C (zh) 2009-12-02
CN1886990A (zh) 2006-12-27
KR20070011258A (ko) 2007-01-24
US20070143494A1 (en) 2007-06-21
WO2005053315A1 (fr) 2005-06-09

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