WO2008048828A3 - Reducing channel-change time - Google Patents

Reducing channel-change time Download PDF

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Publication number
WO2008048828A3
WO2008048828A3 PCT/US2007/080869 US2007080869W WO2008048828A3 WO 2008048828 A3 WO2008048828 A3 WO 2008048828A3 US 2007080869 W US2007080869 W US 2007080869W WO 2008048828 A3 WO2008048828 A3 WO 2008048828A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
channel
fec
data packet
change
Prior art date
Application number
PCT/US2007/080869
Other languages
French (fr)
Other versions
WO2008048828A2 (en
Inventor
William C Versteeg
Original Assignee
Scientific Atlanta
William C Versteeg
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 Scientific Atlanta, William C Versteeg filed Critical Scientific Atlanta
Priority to CA2666861A priority Critical patent/CA2666861C/en
Priority to EP07844052.6A priority patent/EP2082575B1/en
Priority to CN200780038707XA priority patent/CN101529907B/en
Priority to MX2009004151A priority patent/MX2009004151A/en
Publication of WO2008048828A2 publication Critical patent/WO2008048828A2/en
Publication of WO2008048828A3 publication Critical patent/WO2008048828A3/en

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]
    • H04N21/60—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
    • H04N21/643—Communication protocols
    • H04N21/64315—DVB-H
    • 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 MPEG packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • 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 MPEG packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44016—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving splicing one content stream with another content stream, e.g. for substituting a video clip

Abstract

Systems and methods are disclosed herein for utilizing forward error correction (FEC) during a channel-change event. In one embodiment, among others, a method for executing a change from one communication channel to another includes receiving a channel-change indication and obtaining data and FEC that corresponds to the data. The data and FEC are related to a new channel, and the data includes a portion of data within a data packet. By utilizing the FEC, the method further includes recreating portions of data of the data packet that were missed due to the channel-change indication occurring in the middle of the transmission of the data packet. As an example, the data packet can be associated with video data arranged in a group of pictures (GOP) structure.
PCT/US2007/080869 2006-10-18 2007-10-10 Reducing channel-change time WO2008048828A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2666861A CA2666861C (en) 2006-10-18 2007-10-10 Reducing channel-change time
EP07844052.6A EP2082575B1 (en) 2006-10-18 2007-10-10 Reducing channel-change time
CN200780038707XA CN101529907B (en) 2006-10-18 2007-10-10 Device and method for reducing channel-change time
MX2009004151A MX2009004151A (en) 2006-10-18 2007-10-10 Reducing channel-change time.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/550,441 2006-10-18
US11/550,441 US7870465B2 (en) 2006-10-18 2006-10-18 Reducing channel-change time

Publications (2)

Publication Number Publication Date
WO2008048828A2 WO2008048828A2 (en) 2008-04-24
WO2008048828A3 true WO2008048828A3 (en) 2008-07-10

Family

ID=39313089

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/080869 WO2008048828A2 (en) 2006-10-18 2007-10-10 Reducing channel-change time

Country Status (6)

Country Link
US (1) US7870465B2 (en)
EP (1) EP2082575B1 (en)
CN (1) CN101529907B (en)
CA (1) CA2666861C (en)
MX (1) MX2009004151A (en)
WO (1) WO2008048828A2 (en)

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