WO2003026294A3 - An apparatus and method for correcting frequency offsets in a multi-channel processing system - Google Patents

An apparatus and method for correcting frequency offsets in a multi-channel processing system Download PDF

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Publication number
WO2003026294A3
WO2003026294A3 PCT/US2002/029484 US0229484W WO03026294A3 WO 2003026294 A3 WO2003026294 A3 WO 2003026294A3 US 0229484 W US0229484 W US 0229484W WO 03026294 A3 WO03026294 A3 WO 03026294A3
Authority
WO
WIPO (PCT)
Prior art keywords
drift
multimedia
processing system
channel processing
frequency offsets
Prior art date
Application number
PCT/US2002/029484
Other languages
French (fr)
Other versions
WO2003026294A2 (en
Inventor
Mark Peting
Original Assignee
Digeo Inc
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 Digeo Inc filed Critical Digeo Inc
Priority to AU2002341690A priority Critical patent/AU2002341690A1/en
Publication of WO2003026294A2 publication Critical patent/WO2003026294A2/en
Publication of WO2003026294A3 publication Critical patent/WO2003026294A3/en

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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]
    • H04N21/40—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]
    • H04N21/60—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 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6143—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/455—Demodulation-circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/52—Automatic gain control
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof

Abstract

A system and method are described for providing drift compensation for a multimedia receiver which processes multimedia streams from a plurality of satellite transponders and/or cable/broadcast carriers. In one embodiment, the average drift amount for all multimedia signals in a first group of multimedia signals is calculated and, based on the calculation, the drift of the entire group is corrected. This drift is referred to as system drift. In addition, the difference in drift between each individual multimedia signal and the system drift amount is used to correct the individual drift for each multimedia signal.
PCT/US2002/029484 2001-09-17 2002-09-16 An apparatus and method for correcting frequency offsets in a multi-channel processing system WO2003026294A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002341690A AU2002341690A1 (en) 2001-09-17 2002-09-16 An apparatus and method for correcting frequency offsets in a multi-channel processing system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/955,529 2001-09-17
US09/955,529 US7382838B2 (en) 2001-09-17 2001-09-17 Frequency drift compensation across multiple broadband signals in a digital receiver system

Publications (2)

Publication Number Publication Date
WO2003026294A2 WO2003026294A2 (en) 2003-03-27
WO2003026294A3 true WO2003026294A3 (en) 2003-12-18

Family

ID=25496942

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/029484 WO2003026294A2 (en) 2001-09-17 2002-09-16 An apparatus and method for correcting frequency offsets in a multi-channel processing system

Country Status (3)

Country Link
US (1) US7382838B2 (en)
AU (1) AU2002341690A1 (en)
WO (1) WO2003026294A2 (en)

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US8418217B2 (en) 2006-09-06 2013-04-09 Verizon Patent And Licensing Inc. Systems and methods for accessing media content
US8566874B2 (en) 2006-10-03 2013-10-22 Verizon Patent And Licensing Inc. Control tools for media content access systems and methods
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US8510780B2 (en) 2006-12-21 2013-08-13 Verizon Patent And Licensing Inc. Program guide navigation tools for media content access systems and methods
US8015581B2 (en) 2007-01-05 2011-09-06 Verizon Patent And Licensing Inc. Resource data configuration for media content access systems and methods
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DE102008017290A1 (en) * 2007-12-11 2009-06-18 Rohde & Schwarz Gmbh & Co. Kg Method and device for forming a common data stream, in particular according to the ATSC standard
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DE102008056703A1 (en) * 2008-07-04 2010-01-07 Rohde & Schwarz Gmbh & Co. Kg Method and system for time synchronization between a central office and multiple transmitters
US8229383B2 (en) * 2009-01-06 2012-07-24 The Directv Group, Inc. Frequency drift estimation for low cost outdoor unit frequency conversions and system diagnostics
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Also Published As

Publication number Publication date
AU2002341690A1 (en) 2003-04-01
US7382838B2 (en) 2008-06-03
WO2003026294A2 (en) 2003-03-27
US20030133530A1 (en) 2003-07-17

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