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1. WO2007142398 - DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA

Publication Number WO/2007/142398
Publication Date 13.12.2007
International Application No. PCT/KR2007/000159
International Filing Date 09.01.2007
IPC
H04N 7/015 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
015High-definition television systems
CPC
H04N 21/234327
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
2343involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
234327by decomposing into layers, e.g. base layer and one or more enhancement layers
H04N 21/2362
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
236Assembling 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
2362Generation or processing of Service Information [SI]
H04N 21/2383
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
2383Channel coding ; or modulation; of digital bit-stream, e.g. QPSK modulation
H04N 21/242
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
242Synchronization processes, e.g. processing of PCR [Program Clock References]
H04N 21/2662
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
266Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
2662Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
H04N 7/173
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
173with two-way working, e.g. subscriber sending a programme selection signal
Applicants
  • LG ELECTRONICS INC. [KR]/[KR] (AllExceptUS)
  • CHOI, In Hwan [KR]/[KR] (UsOnly)
  • KWAK, Kook Yeon [KR]/[KR] (UsOnly)
  • KIM, Byoung Gill [KR]/[KR] (UsOnly)
  • KIM, Jin Woo [KR]/[KR] (UsOnly)
  • LEE, Hyoung Gon [KR]/[KR] (UsOnly)
  • KIM, Jong Moon [KR]/[KR] (UsOnly)
  • SONG, Won Gyu [KR]/[KR] (UsOnly)
Inventors
  • CHOI, In Hwan
  • KWAK, Kook Yeon
  • KIM, Byoung Gill
  • KIM, Jin Woo
  • LEE, Hyoung Gon
  • KIM, Jong Moon
  • SONG, Won Gyu
Agents
  • KIM, Yong In
Priority Data
10-2006-005209509.06.2006KR
Publication Language English (EN)
Filing Language Korean (KO)
Designated States
Title
(EN) DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA
(FR) système de diffusion numérique et procédé de traitement de données
Abstract
(EN)
A digital broadcast system and processing method that can transmit/receive digital broadcast signal are disclosed. More specifically, when a known data sequence is inputted to a trellis encoder, by having the transmitting system initialize a memory within the trellis encoder and trellis -encode the inputted data, thereby transmitted the processed data, and by having the receiving system estimate known data information, which is to be used for frequency synchronization and channel equalization, the receiving performance of the receiving system may be enhanced in a situation undergoing severe and frequent channel changes.
(FR)
L'invention concerne un système de diffusion numérique et un procédé de traitement qui peuvent transmettre/recevoir un signal de diffusion numérique. Plus spécifiquement, lorsqu'une séquence de données connues est entrée sur un codeur en treillis, grâce au système de transmission qui initialise une mémoire dans le codeur en treillis et qui code en treillis les données entrées, transmettant de ce fait les données traitées, et grâce au système de réception qui estime des informations de données connues, qui doivent être utilisées pour une synchronisation de fréquence et une égalisation de canal, les performances de réception du système de réception peuvent être améliorées dans une situation de changements de canaux fréquents et contraignants.
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