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

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)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7994933B2 (en) * 2004-03-30 2011-08-09 Itron, Inc. Frequency shift compensation, such as for use in a wireless utility meter reading environment
JP4592523B2 (en) * 2004-07-29 2010-12-01 パナソニック株式会社 Wireless transmission device and wireless reception device
CA2595280C (en) * 2005-03-02 2013-11-19 Rohde & Schwarz Gmbh & Co. Kg Apparatus, systems and methods for providing enhancements to atsc networks using synchronous vestigial sideband (vsb) frame slicing
US20060245516A1 (en) * 2005-03-02 2006-11-02 Rohde & Schwarz, Inc. Apparatus, systems and methods for providing in-band atsc vestigial sideband signaling or out-of-band signaling
US7822139B2 (en) * 2005-03-02 2010-10-26 Rohde & Schwarz Gmbh & Co. Kg Apparatus, systems, methods and computer products for providing a virtual enhanced training sequence
US7532677B2 (en) * 2005-03-02 2009-05-12 Rohde & Schwarz Gmbh & Co., Kg Apparatus, systems and methods for producing coherent symbols in a single frequency network
GB2435725A (en) * 2006-03-03 2007-09-05 Toumaz Technology Ltd Frequency generation circuit
US8069461B2 (en) 2006-03-30 2011-11-29 Verizon Services Corp. On-screen program guide with interactive programming recommendations
US8418217B2 (en) 2006-09-06 2013-04-09 Verizon Patent And Licensing Inc. Systems and methods for accessing media content
US8464295B2 (en) 2006-10-03 2013-06-11 Verizon Patent And Licensing Inc. Interactive search graphical user interface systems and methods
US8566874B2 (en) 2006-10-03 2013-10-22 Verizon Patent And Licensing Inc. Control tools for media content access systems and methods
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
BRPI0807135B1 (en) 2007-02-01 2020-09-24 Rohde & Schwarz Gmbh & Co. Kg APPARATUS AND METHOD TO MAKE A DATA STRUCTURE BE ISSUED IN AN AERIAL INTERFACE OF AN ANTENNA AND MEDIA READABLE BY NON-TRANSITIONAL COMPUTER
US8103965B2 (en) 2007-06-28 2012-01-24 Verizon Patent And Licensing Inc. Media content recording and healing statuses
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
DE102007059959B4 (en) * 2007-12-12 2020-01-02 Rohde & Schwarz Gmbh & Co. Kg Method and system for transmitting data between a central radio station and at least one transmitter
US8051447B2 (en) 2007-12-19 2011-11-01 Verizon Patent And Licensing Inc. Condensed program guide for media content access systems and methods
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
US8355458B2 (en) * 2008-06-25 2013-01-15 Rohde & Schwarz Gmbh & Co. Kg Apparatus, systems, methods and computer program products for producing a single frequency network for ATSC mobile / handheld services
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
DE102008059028B4 (en) * 2008-10-02 2021-12-02 Rohde & Schwarz GmbH & Co. Kommanditgesellschaft Method and device for generating a transport data stream with image data
MX2011004645A (en) * 2008-11-06 2011-05-30 Rohde & Schwarz Method and system for synchronized mapping of data packets in an atsc data stream.
EP2234357B1 (en) * 2009-03-21 2016-07-27 Rohde & Schwarz GmbH & Co. KG Method for improving the data rate of mobile data and the quality of channel estimation in an ATSC-M/H transport data stream
DE102009025219A1 (en) * 2009-04-07 2010-10-14 Rohde & Schwarz Gmbh & Co. Kg Method and device for continuously adapting coding parameters to a variable payload data rate
DE102009057363B4 (en) 2009-10-16 2013-04-18 Rohde & Schwarz Gmbh & Co. Kg Method and device for the efficient transmission of nationwide and regionally broadcast program and service data
US8989021B2 (en) 2011-01-20 2015-03-24 Rohde & Schwarz Gmbh & Co. Kg Universal broadband broadcasting

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001059937A2 (en) * 2000-01-26 2001-08-16 Qualcomm Incorporated Multipath doppler-adjusted frequency tracking loop
US6278725B1 (en) * 1998-12-18 2001-08-21 Philips Electronics North America Corporation Automatic frequency control loop multipath combiner for a rake receiver

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015238A (en) * 1975-11-24 1977-03-29 Harris Corporation Metric updater for maximum likelihood decoder
US5295142A (en) * 1989-07-18 1994-03-15 Sony Corporation Viterbi decoder
US5027374A (en) * 1990-03-26 1991-06-25 Motorola, Inc. Bit serial Viterbi decoder add/compare/select array
US5291499A (en) * 1992-03-16 1994-03-01 Cirrus Logic, Inc. Method and apparatus for reduced-complexity viterbi-type sequence detectors
US5349608A (en) * 1993-03-29 1994-09-20 Stanford Telecommunications, Inc. Viterbi ACS unit with renormalization
JP2741336B2 (en) * 1993-11-26 1998-04-15 エヌ・ティ・ティ移動通信網株式会社 Frequency error correction device for spread spectrum signal receiver
EP0668660A1 (en) * 1994-02-18 1995-08-23 Matsushita Electric Industrial Co., Ltd. Maximum likelihood decoder and decoding method
US5802315A (en) 1995-09-04 1998-09-01 Sharp Kabushiki Kaisha Picture reproducing apparatus
JP3280834B2 (en) * 1995-09-04 2002-05-13 沖電気工業株式会社 Signal judging device and receiving device in coded communication system, signal judging method, and channel state estimating method
JP3444727B2 (en) * 1995-09-26 2003-09-08 シャープ株式会社 Digital satellite broadcasting receiver
US5778192A (en) * 1995-10-26 1998-07-07 Motorola, Inc. Method and device for optimal bit allocation between different sources of information in digital video compression
CA2183140C (en) * 1996-08-12 2001-11-20 Grant Mcgibney Ofdm timing and frequency recovery system
JP3246349B2 (en) * 1996-09-05 2002-01-15 ソニー株式会社 Viterbi decoding device
US6005640A (en) * 1996-09-27 1999-12-21 Sarnoff Corporation Multiple modulation format television signal receiver system
WO1998018209A1 (en) * 1996-10-24 1998-04-30 Sony Corporation Device and method for viterbi decoding
JPH10150370A (en) * 1996-11-19 1998-06-02 Sony Corp Viterbi decoder and viterbi decoding method
JP3340343B2 (en) * 1997-03-13 2002-11-05 株式会社東芝 Processor and information processing device
US6195642B1 (en) * 1997-04-15 2001-02-27 Sony Corporation Digital broadcasting receiving apparatus
JPH10303851A (en) * 1997-04-25 1998-11-13 Mitsubishi Electric Corp Digital broadcast receiver
US6140822A (en) * 1997-05-29 2000-10-31 Williams; Thomas H. System for signal path characterization with a reference signal using stepped-frequency increments
US6049573A (en) * 1997-12-11 2000-04-11 Massachusetts Institute Of Technology Efficient polyphase quadrature digital tuner
US6141391A (en) * 1998-02-04 2000-10-31 Lsi Logic Corporation System for improving the performance at low signal-to-noise ratios of receivers with Viterbi decoders
US6138265A (en) * 1998-02-04 2000-10-24 Lsi Logic Corporation Decoding trellis coded modulated data with a conventional Viterbi decoder
US6122325A (en) * 1998-02-04 2000-09-19 Lsi Logic Corporation Method and system for detecting and correcting in-phase/quadrature imbalance in digital communication receivers
US6049255A (en) * 1998-06-05 2000-04-11 Telefonaktiebolaget Lm Ericsson Tuning the bandwidth of a phase-locked loop
EP0969636B1 (en) * 1998-06-30 2007-04-25 Lucent Technologies Inc. Tracking carrier timing utilising frequency offset error signal
US6266687B1 (en) * 1998-09-18 2001-07-24 Telefonaktiebolaget Lm Ericsson (Publ) Flexibility enhancement to the modified fast convolution algorithm
US6563889B1 (en) * 1998-10-01 2003-05-13 Lsi Logic Corporation Method and apparatus for adapting the boost of a read channel filter
US6189126B1 (en) * 1998-11-05 2001-02-13 Qualcomm Incorporated Efficient trellis state metric normalization
US6285720B1 (en) 1999-05-28 2001-09-04 W J Communications, Inc. Method and apparatus for high data rate wireless communications over wavefield spaces
US6647055B2 (en) * 2000-08-31 2003-11-11 Wen-Yi Kuo Adaptive channel estimation using continuous pilot signal based on doppler period
US6985434B2 (en) * 2000-09-01 2006-01-10 Nortel Networks Limited Adaptive time diversity and spatial diversity for OFDM
US6633616B2 (en) * 2001-02-21 2003-10-14 Magis Networks, Inc. OFDM pilot tone tracking for wireless LAN

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6278725B1 (en) * 1998-12-18 2001-08-21 Philips Electronics North America Corporation Automatic frequency control loop multipath combiner for a rake receiver
WO2001059937A2 (en) * 2000-01-26 2001-08-16 Qualcomm Incorporated Multipath doppler-adjusted frequency tracking loop

Also Published As

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

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