BRPI0411541A - método e aparelho para processar pacotes nulos em um receptor de mìdia digital - Google Patents

método e aparelho para processar pacotes nulos em um receptor de mìdia digital

Info

Publication number
BRPI0411541A
BRPI0411541A BRPI0411541-4A BRPI0411541A BRPI0411541A BR PI0411541 A BRPI0411541 A BR PI0411541A BR PI0411541 A BRPI0411541 A BR PI0411541A BR PI0411541 A BRPI0411541 A BR PI0411541A
Authority
BR
Brazil
Prior art keywords
null
packets
packet
bit pattern
digital media
Prior art date
Application number
BRPI0411541-4A
Other languages
English (en)
Inventor
Weixiao Liu
Ivonete Markman
Matthew Thomas Mayer
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of BRPI0411541A publication Critical patent/BRPI0411541A/pt
Publication of BRPI0411541B1 publication Critical patent/BRPI0411541B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0605—Special codes used as synchronising signal
    • H04J3/0608—Detectors therefor, e.g. correlators, state machines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/043—Pseudo-noise [PN] codes variable during transmission
    • 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
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • 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
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4344—Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/09—Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
    • H03M13/095—Error detection codes other than CRC and single parity bit codes
    • H03M13/096—Checksums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L2007/045—Fill bit or bits, idle words

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

"MéTODO E APARELHO PARA PROCESSAR PACOTES NULOS EM UM RECEPTOR DE MìDIA DIGITAL". São descritos um método e aparelho (299) para detectar confiavelmente posições de bytes de sincronismo de pacotes MPEG-2 recebidos por um sistema de transmissão digital, no caso de um fluxo de pacotes contendo uma pluralidade de pacotes nulos, ou uma pluralidade de pacotes contendo um padrão de bits repetitivo fixo, e para sincronizar e entregar confiavelmente o fluxo MPEG-2 difundido na camada de transporte do receptor. Um Detector de Pacotes Nulos (250) compara o conteúdo do pacote atual com um padrão de bits fixo (ou predeterminado) para detectar um pacote nulo para identificar confiavelmente o local do byte de sincronismo do pacote nulo. Uma posição do byte de sincronismo é identificada com base na posição do padrão de bits fixo predeterminado na parte do cabeçalho de uma pluralidade de pacotes nulos no fluxo.
BRPI0411541-4A 2003-06-18 2004-06-16 método e aparelho para processar pacotes nulos em um receptor de mídia digital BRPI0411541B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US47939703P 2003-06-18 2003-06-18
US60/479.397 2003-06-18
PCT/US2004/019003 WO2004114676A2 (en) 2003-06-18 2004-06-16 Method and apparatus for processing null packets in a digital media receiver

Publications (2)

Publication Number Publication Date
BRPI0411541A true BRPI0411541A (pt) 2006-08-01
BRPI0411541B1 BRPI0411541B1 (pt) 2018-09-18

Family

ID=33539173

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0411541-4A BRPI0411541B1 (pt) 2003-06-18 2004-06-16 método e aparelho para processar pacotes nulos em um receptor de mídia digital

Country Status (10)

Country Link
US (1) US7652999B2 (pt)
EP (1) EP1634462B1 (pt)
JP (1) JP4848274B2 (pt)
KR (1) KR101059036B1 (pt)
CN (1) CN1810042B (pt)
BR (1) BRPI0411541B1 (pt)
DE (1) DE602004023502D1 (pt)
MX (1) MXPA05013573A (pt)
MY (2) MY144728A (pt)
WO (1) WO2004114676A2 (pt)

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US8261165B2 (en) * 2008-11-14 2012-09-04 Silicon Laboratories Inc. Multi-syndrome error correction circuit
US8438450B2 (en) * 2009-01-30 2013-05-07 Sri International Method and system for performing data integrity verification of a transport stream
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KR102218923B1 (ko) * 2013-05-15 2021-02-23 엘지전자 주식회사 방송 신호 송신 장치, 방송 신호 수신 장치, 방송 신호 송신 방법 및 방송 신호 수신 방법
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JP7225080B2 (ja) * 2019-11-29 2023-02-20 株式会社東芝 電子通信装置、磁気ディスク装置、及びシリアル通信方法
US11323758B1 (en) * 2019-12-12 2022-05-03 Amazon Technologies, Inc. Lossless transport stream compression from constant bitrate to variable bitrate to constant bitrate

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Also Published As

Publication number Publication date
BRPI0411541B1 (pt) 2018-09-18
CN1810042A (zh) 2006-07-26
JP2006528440A (ja) 2006-12-14
MY144729A (en) 2011-10-31
US20060274737A1 (en) 2006-12-07
CN1810042B (zh) 2010-08-18
EP1634462B1 (en) 2009-10-07
WO2004114676A3 (en) 2005-04-14
KR20060022696A (ko) 2006-03-10
KR101059036B1 (ko) 2011-08-24
EP1634462A2 (en) 2006-03-15
MXPA05013573A (es) 2006-08-18
MY144728A (en) 2011-10-31
DE602004023502D1 (de) 2009-11-19
US7652999B2 (en) 2010-01-26
JP4848274B2 (ja) 2011-12-28
WO2004114676A2 (en) 2004-12-29

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Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Ipc: H04N 5/04 (2006.01), H03M 13/09 (2006.01)

B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 18/09/2018, OBSERVADAS AS CONDICOES LEGAIS.

B25G Requested change of headquarter approved

Owner name: THOMSON LICENSING (FR)

B25A Requested transfer of rights approved

Owner name: THOMSON LICENSING DTV (FR)

B25A Requested transfer of rights approved

Owner name: INTERDIGITAL MADISON PATENT HOLDINGS (FR)

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 22A ANUIDADE.