BRPI0512505A - transmissor de difusão digital, método de processamento de sinal para transmissão de difusão digital, receptor de difusão digital e método de processamento de sinal para recepção de difusão de sinal - Google Patents

transmissor de difusão digital, método de processamento de sinal para transmissão de difusão digital, receptor de difusão digital e método de processamento de sinal para recepção de difusão de sinal

Info

Publication number
BRPI0512505A
BRPI0512505A BRPI0512505-7A BRPI0512505A BRPI0512505A BR PI0512505 A BRPI0512505 A BR PI0512505A BR PI0512505 A BRPI0512505 A BR PI0512505A BR PI0512505 A BRPI0512505 A BR PI0512505A
Authority
BR
Brazil
Prior art keywords
digital broadcast
processing method
signal processing
digital
data stream
Prior art date
Application number
BRPI0512505-7A
Other languages
English (en)
Inventor
Sung-Woo Park
Yong-Deok Chang
Eui-Jun Park
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of BRPI0512505A publication Critical patent/BRPI0512505A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • 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
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23412—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
    • 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
    • H04N21/236—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
    • H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
    • 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
    • H04N21/236—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
    • H04N21/23611—Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate
    • 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
    • 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
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0093—Point-to-multipoint
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03382—Single of vestigal sideband
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Error Detection And Correction (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

TRANSMISSOR DE DIFUSãO DIGITAL, MéTODO DE PROCESSAMENTO DE SINAL PARA TRANSMISSãO DE DIFUSãO DIGITAL, RECEPTOR DE DIFUSãO DIGITAL E MéTODO DE PROCESSAMENTO DE SINAL PARA RECEPçãO DE DIFUSãO DE SINAL. A presente invenção refere-se a sistema de transmissão recepção de difusão digital e a um método de processamento de sinal para o mesmo, que aperfeiçoa o desempenho de recebimento do sistema. Um transmissor de difusão digital pode incluir um randomizador (310,510) para receber e randomizar um fluxo de dados em uma posição especificada da qual os bytes de enchimento são inseridos, um gerador de seqüência de substituição para gerar dados conhecidos consistindo em uma seqüência predefinida, uma unidade de troca de bytes de enchimento (315,515) para inserir os dados conhecidos na posição especificada do fluxo de dados em que os bytes de enchimento são inseridos, um codificador (320,520) para codificar a saída de fluxo de dados da unidade de troca de bytes de enchimento (313,515) para uma correção de erro e uma unidade de transmissão (360,560) para modular o fluxo de dados codificados, converter em RF o fluxo de dados modulados e transmitir os dados convertidos em RF. O desempenho do recebimento de difusão digital pode ser aperfeiçoado mesmo em um canal de multicurso interior pela detecção dos dados conhecidos da transmissão recebida e usando os dados conhecidos para sincronização e equalização em um receptor de difusão digital.
BRPI0512505-7A 2004-06-23 2005-06-23 transmissor de difusão digital, método de processamento de sinal para transmissão de difusão digital, receptor de difusão digital e método de processamento de sinal para recepção de difusão de sinal BRPI0512505A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040047153A KR100744055B1 (ko) 2004-06-23 2004-06-23 수신 성능 및 등화 성능이 향상된 디지털 방송 송수신 시스템 및 그의 신호처리방법
PCT/KR2005/001940 WO2006001635A1 (en) 2004-06-23 2005-06-23 Digital broadcasting transmission/reception apable of improving receiving and equalizing performance and signal processing method thereof

Publications (1)

Publication Number Publication Date
BRPI0512505A true BRPI0512505A (pt) 2008-03-11

Family

ID=35782012

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0512505-7A BRPI0512505A (pt) 2004-06-23 2005-06-23 transmissor de difusão digital, método de processamento de sinal para transmissão de difusão digital, receptor de difusão digital e método de processamento de sinal para recepção de difusão de sinal

Country Status (11)

Country Link
US (6) US7738581B2 (pt)
EP (2) EP1759528A4 (pt)
JP (2) JP4668987B2 (pt)
KR (1) KR100744055B1 (pt)
CN (1) CN1973542B (pt)
BR (1) BRPI0512505A (pt)
CA (1) CA2568023C (pt)
MX (1) MXPA06014982A (pt)
RU (2) RU2350037C2 (pt)
SG (1) SG153853A1 (pt)
WO (1) WO2006001635A1 (pt)

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