DK2868103T3 - Videodatastrømskoncept - Google Patents

Videodatastrømskoncept Download PDF

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DK2868103T3
DK2868103T3 DK13735241.5T DK13735241T DK2868103T3 DK 2868103 T3 DK2868103 T3 DK 2868103T3 DK 13735241 T DK13735241 T DK 13735241T DK 2868103 T3 DK2868103 T3 DK 2868103T3
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packets
sequence
packet
units
decoding
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DK13735241.5T
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Detlev Marpe
Valeri George
Karsten Grüneberg
Anastasia Henkel
Thomas Schierl
Robert Skupin
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Ge Video Compression Llc
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    • H04N19/65—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience
    • H04N19/68—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using error resilience involving the insertion of resynchronisation markers into the bitstream
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    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/167—Position within a video image, e.g. region of interest [ROI]
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    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/174—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a slice, e.g. a line of blocks or a group of blocks
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    • H04N19/188—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a video data packet, e.g. a network abstraction layer [NAL] unit
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    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
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    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
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    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/4728—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for selecting a Region Of Interest [ROI], e.g. for requesting a higher resolution version of a selected region
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    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • H04N21/64746—Control signals issued by the network directed to the server or the client
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    • G06F15/173—Interprocessor communication using an interconnection network, e.g. matrix, shuffle, pyramid, star, snowflake
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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Computing Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Communication Control (AREA)
  • Television Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Claims (15)

1. Videodatastrøm med videoindhold (16) kodet deri i enheder af underafsnit (24) af billeder (18) af videoindholdet (16), hvor hvert underafsnit (24) i hvert enkelt tilfælde er kodet i en eller flere nyttedatapakker (32) af en sekvens (34) af pakker af videodatastrømmen (22), hvor sekvensen (34) af pakker er inddelt i en sekvens af adgangsenheder (30), således at hver adgangsenhed (30) samler nyttedatapakkerne (32), der vedrører et respektivt billede (18) af videoindholdet (16), hvor sekvensen (34) af pakker har blandet deri tidsstyringspakker (36), således at tidsstyringspakkerne (36) underinddeler adgangsenhederne (30) i afkodningsenheder (38), således at mindst nogle adgangsenheder (30) underinddeles i to eller flere afkodningsenheder (38), hvor hver tidsstyringspakke (36) signalerer en afkoder-buffergenvindingstid for en afkodningsenhed (38), hvis nyttedatapakker (32) følger den respektive tidsstyringspakke (36) i sekvensen (34) af pakker.
2. Videodatastrøm ifølge krav 1, hvor underafsnittene (24) er skiver, og hver nyttedatapakke (32) omgiver en eller flere skiver.
3. Videodatastrøm ifølge krav 2, hvor skiverne omfatter skiver, der kan afkodes uafhængigt, og afhængige skiver, der til WPP-behandling, tillader afkodning under anvendelse af entropi- og prædiktionsafkodning ud over skivegrænser.
4. Videodatastrøm ifølge et hvilket som helst af kravene 1 til 3, hvor hver pakke af sekvensen (34) af pakker kan være tildelt til nøjagtigt en pakketype ud af en flerhed af pakketyper, hvor nyttedatapakker (32) og tidsstyringspakker (36) er af forskellige pakketyper, hvor forekomster af pakker af flerheden af pakketyper i sekvensen (34) af pakker er underlagt visse begrænsninger, som definerer en rækkefølge blandt pakketyper, som skal følges af pakkerne i hver adgangsenhed (30), således at adgangsenhedsgrænser kan detekteres under anvendelse af begrænsningerne ved at detektere eksempler, hvor begrænsningerne afvises og forbliver ved den samme position i sekvensen af pakker, selvom pakker af en hvilken som helst fjernelig type, fjernes fra videodatastrømmen, hvor nyttedatapakker (32) er af en ikke-fjernelig pakketype, og tidsstyringspakker (36) er af den fjernelige pakketype.
5. Videodatastrøm ifølge et hvilket som helst af kravene 1 til 4, hvor hver pakke omfatter et pakketypeangivende syntakselementafsnit.
6. Videodatastrøm ifølge krav 5, hvor det pakketypeangivende syntakselementafsnit omfatter et pakketypefelt i en pakkeheader af den respektive pakke, hvis indhold adskiller sig mellem nyttedatapakker og tidsstyringspakker, og for tidsstyringspakker et SEI-pakkefelt, der differentierer mellem tidsstyringspakkerne på den ene side og SEI-pakker af forskellig type på den anden side.
7. Koder til kodning i en videodatastrøm (22) af videoindhold (16) i enheder af underafsnit (24) af billeder (18) af videoindholdet (16), hvor hvert underafsnit (24) i hvert enkelt tilfælde kodes i en eller flere nyttedatapakker (32) af en sekvens (34) af pakker af videodatastrømmen (22), således at sekvensen (34) af pakker inddeles i en sekvens af adgangsenheder (30), og hver adgangsenhed (30) samler nyttedatapakkerne (32), der vedrører et respektivt billede (18) af videoindholdet (16), hvor koderen er indrettet til at blande tidsstyringspakker (36) i sekvensen (34) af pakker, således at tidsstyringspakkerne (36) underinddeler adgangsenhederne (30) i afkodningsenheder (38), således at mindst nogle adgangsenheder (30) underinddeles i to eller flere afkodningsenheder (38), hvor hver tidsstyringspakke (36) signalerer en afkoderbuffergenvindingstid for en afkodningsenhed (38), hvis nyttedatapakker (32) følger den respektive tidsstyringspakke (36) i sekvensen (34) af pakker.
8. Koder ifølge krav 7, hvor koderen er indrettet til under kodning af et aktuelt billede af videoindholdet at kode et aktuelt underafsnit (24) af et aktuelt billede (18) i en aktuel nyttedatapakke (32) af en aktuel afkodningsenhed (38), i datastrømmen at sende den aktuelle afkodningsenhed (38), der har en aktuel tidsstyringspakke (36) foranstillet, med indstilling af en afkoderbuffergenvindings-tid, der signaleres af den aktuelle tidsstyringspakke (36) på et første tidspunkt; og at kode et yderligere underafsnit af det aktuelle billede på et andet tidspunkt senere end det første tidspunkt.
9. Fremgangsmåde til kodning i en videodatastrøm (22) af videoindhold (16) i enheder af underafsnit (24) af billeder (18) af videoindholdet (16), hvor hvert underafsnit (24) i hvert enkelt tilfælde kodes i en eller flere nyttedatapakker (32) af en sekvens (34) af pakker af videodatastrømmen (22), således at sekvensen (34) af pakker inddeles i en sekvens af adgangsenheder (30), og hver adgangsenhed (30) samler nyttedatapakkerne (32), der vedrører et respektivt billede (18) af videoindholdet (16), hvor fremgangsmåden omfatter at blande tidsstyringspakker (36) i sekvensen (34) af pakker, således at tidsstyringspakkerne (36) underinddeler adgangsenhederne (30) i afkodningsenheder (38), således at mindst nogle adgangsenheder (30) underinddeles i to eller flere afkodningsenheder (38), hvor hver tidsstyringspakke (36) signalerer en afkoderbuffergenvindingstid for en afkodningsenhed (38), hvis nyttedatapakker (32) følger den respektive tidsstyringspakke (36) i sekvensen (34) af pakker.
10. Afkoder til afkodning af en videodatastrøm (22) med videoindhold (16) kodet deri i enheder af underafsnit (24) af billeder (18) af videoindholdet (16), hvor hvert underafsnit (24) i hvert enkelt tilfælde kodes i en eller flere nyttedatapakker (32) af en sekvens (34) af pakker af videodatastrømmen (22), hvor sekvensen (34) af pakker er inddelt i en sekvens af adgangsenheder (30), således at hver adgangsenhed (30) samler nyttedatapakkerne (32), der vedrører et respektivt billede (18) af videoindholdet (16), hvor afkoderen omfatter en buffer til bufring af videodatastrømmen eller en rekonstruktion af videoindholdet opnået deraf ved afkodning af videodatastrømmen og er indrettet til at søge efter tidsstyringspakker (36), der er blandet i sekvensen af pakker, at underinddele adgangsenhederne (30) i afkod ningsenheder (38) ved tidsstyringspakkerne (36), således at mindst nogle adgangsenheder underinddeles i to eller flere afkodningsenheder, og at tømme bufferen i enheder af afkodningsenhederne.
11. Afkoder ifølge krav 10, hvor afkoderen er indrettet til, når den søger efter tidsstyringspakkerne (36), at undersøge i hver pakke et pakketypeangivende syn-takselementafsnit, og hvis en værdi af det pakketypeangivende syntakselement-afsnit er lig med en forudbestemt værdi, at anerkende den respektive pakke som en tidsstyringspakke (36).
12. Fremgangsmåde til afkodning af en videodatastrøm (22) med videoindhold (16) kodet deri i enheder af underafsnit (24) af billeder (18) af videoindholdet (16), hvor hvert underafsnit (24) i hvert enkelt tilfælde kodes i en eller flere nyttedatapakker (32) af en sekvens (34) af pakker af videodatastrømmen (22), hvor sekvensen (34) af pakker inddeles i en sekvens af adgangsenheder (30), således at hver adgangsenhed (30) samler nyttedatapakkerne (32), der vedrører et respektivt billede (18) af videoindholdet (16), hvor fremgangsmåden anvender en buffer til buf-ring af videodatastrømmen eller en rekonstruktion af videoindholdet opnået deraf ved afkodningen af videodatastrømmen og omfatter at søge efter tidsstyringspakker (36), der er blandet i sekvensen af pakker, at underinddele adgangsenhederne (30) i afkodningsenheder (38) ved tidsstyringspakkerne (36), således at mindst nogle adgangsenheder underinddeles i to eller flere afkodningsenheder, og at tømme bufferen i enheder af afkodningsenhederne.
13. Netværksenhed til transmission af en videodatastrøm (22) med videoindhold (16) kodet deri i enheder af underafsnit (24) af billeder (18) af videoindholdet (16), hvor hvert underafsnit (24) i hvert enkelt tilfælde er kodet i en eller flere nyttedatapakker (32) af en sekvens (34) af pakker af videodatastrømmen (22), hvor sekvensen (34) af pakker er inddelt i en sekvens af adgangsenheder (30), således at hver adgangsenhed (30) samler nyttedatapakkerne (32), der vedrører et respektivt bil lede (18) af videoindholdet (16), hvor afkoderen er indrettet til at søge efter tidsstyringspakker (36), der er blandet i sekvensen af pakker, at underinddele adgangsenhederne i afkodningsenheder ved tidsstyringspakkerne (36), således at mindst nogle adgangsenheder (30) underinddeles i to eller flere afkodningsenheder (38), at aflede fra hver tidsstyringspakke (36) en afkoderbuffergenvindingstid til en afkodningsenhed (38), hvis nyttedatapakker (32) følger den respektive tidsstyringspakke (36) i sekvensen (34) af pakker, og at udføre transmissionen af videodatastrømmen i afhængighed af afkoderbuffergenvindingstiderne for afkodningsenhederne (38).
14. Fremgangsmåde til transmission af en videodatastrøm (22) med videoindhold (16) kodet deri i enheder af underafsnit (24) af billeder (18) af videoindholdet (16), hvor hvert underafsnit (24) i hvert enkelt tilfælde er kodet i en eller flere nyttedatapakker (32) af en sekvens (34) af pakker af videodatastrømmen (22), hvor sekvensen (34) af pakker er inddelt i en sekvens af adgangsenheder (30), således at hver adgangsenhed (30) samler nyttedatapakkerne (32), der vedrører et respektivt billede (18) af videoindholdet (16), hvor fremgangsmåden omfatter at søge efter tidsstyringspakker (36), der er blandet i sekvensen af pakker, at underinddele adgangsenhederne i afkodningsenheder ved tidsstyringspakkerne (36), således at mindst nogle adgangsenheder (30) underinddeles i to eller flere afkodningsenheder (38), at aflede fra hver tidsstyringspakke (36) en afkoderbuffergenvindingstid til en afkodningsenhed (38), hvis nyttedatapakker (32) følger den respektive tidsstyringspakke (36) i sekvensen (34) af pakker, og at udføre transmissionen af videodatastrømmen i afhængighed af afkoderbuffergenvindingstiderne for afkodningsenhederne (38).
15. Computerprogram med en programkode til udførelse af en fremgangsmåde ifølge krav 9, 12 eller 14, når det afvikles på en computer.
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