SG117382A1 - Carrier recovery processor for a qam television signal - Google Patents

Carrier recovery processor for a qam television signal

Info

Publication number
SG117382A1
SG117382A1 SG1996002475A SG1996002475A SG117382A1 SG 117382 A1 SG117382 A1 SG 117382A1 SG 1996002475 A SG1996002475 A SG 1996002475A SG 1996002475 A SG1996002475 A SG 1996002475A SG 117382 A1 SG117382 A1 SG 117382A1
Authority
SG
Singapore
Prior art keywords
television signal
carrier recovery
recovery processor
qam television
qam
Prior art date
Application number
SG1996002475A
Other languages
English (en)
Inventor
Bhalchandra Bhatt Bhavesh
Original Assignee
Rca Thomson Licensing Corp
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 Rca Thomson Licensing Corp filed Critical Rca Thomson Licensing Corp
Publication of SG117382A1 publication Critical patent/SG117382A1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/65—Circuits for processing colour signals for synchronous modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • H04L27/3872—Compensation for phase rotation in the demodulated signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/24—High-definition television systems
    • H04N11/30—High-definition television systems with transmission of the extra information by means of quadrature modulation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/66—Circuits for processing colour signals for synchronous demodulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Television Systems (AREA)
  • Color Television Systems (AREA)
SG1996002475A 1992-05-15 1993-05-13 Carrier recovery processor for a qam television signal SG117382A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/883,735 US5315619A (en) 1992-05-15 1992-05-15 Carrier recovery processor for a QAM television signal

Publications (1)

Publication Number Publication Date
SG117382A1 true SG117382A1 (en) 2005-12-29

Family

ID=25383228

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996002475A SG117382A1 (en) 1992-05-15 1993-05-13 Carrier recovery processor for a qam television signal

Country Status (11)

Country Link
US (1) US5315619A (de)
EP (1) EP0570216B1 (de)
JP (1) JP3469915B2 (de)
KR (1) KR100296661B1 (de)
CN (1) CN1074887C (de)
DE (1) DE69332216T2 (de)
ES (1) ES2177537T3 (de)
MX (1) MX9302851A (de)
MY (1) MY109099A (de)
SG (1) SG117382A1 (de)
TW (1) TW255089B (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08505510A (ja) * 1993-10-28 1996-06-11 モトローラ・インコーポレーテッド 複数のデータプロトコルに適用可能な復調器論理ユニット
CN1087543C (zh) * 1993-12-03 2002-07-10 皇家菲利浦电子有限公司 数字通信系统及系统中使用的接收机
GB9417271D0 (en) * 1994-08-26 1994-10-19 Inmos Ltd Memory device
US5692014A (en) * 1995-02-03 1997-11-25 Trw Inc. Subsampled carrier recovery for high data rate demodulators
US5912828A (en) * 1995-12-28 1999-06-15 Lucent Technologies Inc. Equalizer filter configuration for processing real-valued and complex-valued signal samples
US5799037A (en) * 1996-02-16 1998-08-25 David Sarnoff Research Center Inc. Receiver capable of demodulating multiple digital modulation formats
US6005640A (en) * 1996-09-27 1999-12-21 Sarnoff Corporation Multiple modulation format television signal receiver system
US5886752A (en) * 1997-12-22 1999-03-23 Rockwell International Spurious free wideband phase and frequency modulator using a direct digital synthesis alias frequency band
US6002721A (en) * 1998-07-20 1999-12-14 Stanford Telecommunications, Inc. Carrier frequency estimator for a signal receiver
US6377312B1 (en) * 1998-08-24 2002-04-23 Samsung Electronics Co., Ltd. Adaptive fractionally spaced equalizer for received radio transmissions with digital content, such as DTV signals
KR100275708B1 (ko) * 1998-12-31 2000-12-15 윤종용 아날로그 방송의 채널 간섭을 개선한 디지털방송 신호 처리 장치 및 방법
US6151368A (en) * 1999-03-22 2000-11-21 Sicom, Inc. Phase-noise compensated digital communication receiver and method therefor
US6249179B1 (en) 1999-09-08 2001-06-19 Atmel Corporation Direct digital synthesis in a QAM demodulator
US6735247B2 (en) * 2001-03-30 2004-05-11 Qualcomm, Incorporated Method and apparatus in a communication system
US8036332B2 (en) * 2007-03-30 2011-10-11 4472314 Canada Inc. Communication signal symbol timing error detection and recovery
US7869533B2 (en) * 2007-08-27 2011-01-11 Delphi Technologies, Inc. Communication system and method for receiving high priority and low priority signals
US8472513B2 (en) * 2009-01-14 2013-06-25 Lsi Corporation TX back channel adaptation algorithm
US8446974B2 (en) * 2010-01-27 2013-05-21 National Instruments Corporation Blind mechanism for the joint estimation of frequency offset and phase offset for QAM modulated signals
US8995581B2 (en) * 2011-05-11 2015-03-31 Samsung Electronics Co., Ltd. Apparatus and method for soft demapping
US9241339B2 (en) 2013-01-07 2016-01-19 Google Technology Holdings LLC Methods and apparatus for emphasizing frequency blocks containing priority data

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361563A2 (de) * 1988-08-31 1990-04-04 Koninklijke Philips Electronics N.V. Fernsehkanal von hoher Auflösung mit einer Zeit- und Frequenzmultiplexierung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03203416A (ja) * 1989-12-29 1991-09-05 Sharp Corp 自動等化器及び直交振幅変調波復調器
US5287180A (en) * 1991-02-04 1994-02-15 General Electric Company Modulator/demodulater for compatible high definition television system
US5148272A (en) * 1991-02-27 1992-09-15 Rca Thomson Licensing Corporation Apparatus for recombining prioritized video data

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361563A2 (de) * 1988-08-31 1990-04-04 Koninklijke Philips Electronics N.V. Fernsehkanal von hoher Auflösung mit einer Zeit- und Frequenzmultiplexierung

Also Published As

Publication number Publication date
JP3469915B2 (ja) 2003-11-25
KR100296661B1 (ko) 2001-10-24
ES2177537T3 (es) 2002-12-16
EP0570216B1 (de) 2002-08-21
CN1074887C (zh) 2001-11-14
TW255089B (de) 1995-08-21
DE69332216T2 (de) 2003-05-28
CN1078838A (zh) 1993-11-24
EP0570216A3 (de) 1994-04-20
KR930024514A (ko) 1993-12-22
US5315619A (en) 1994-05-24
EP0570216A2 (de) 1993-11-18
JPH0678014A (ja) 1994-03-18
MX9302851A (es) 1993-11-01
DE69332216D1 (de) 2002-09-26
MY109099A (en) 1996-12-31

Similar Documents

Publication Publication Date Title
SG117382A1 (en) Carrier recovery processor for a qam television signal
GB2273220B (en) A video processing system
GB2272822B (en) A broadcasting system
GB2254219B (en) Priority selection apparatus as for a video signal processor
EP0454927A3 (en) A coding system for video signals
GB2223647B (en) A video processing system
TW335241U (en) A video display system
EP0595323A3 (en) Downward compatible video system
GB9009954D0 (en) A video processing system
EP0490502A3 (en) Analog image signal processor circuit for a multimedia system
GB2264208B (en) A loudspeaker system
HK1002134A1 (en) Digital demodulator for pi/4- qpsk signals
GB2220816B (en) Subnyquist demodulator as for a television receiver
EP0571788A3 (en) Arrangement for carrier recovery in a qam receiver
EP0525900A3 (en) Filter circuit for preprocessing a video signal
AU569199B2 (en) Carrier recovery from a qam signal
GB2279899B (en) A screen printing system
GB2274223B (en) A video processing system
GB9218343D0 (en) A mounting apparatus
GB2253120B (en) A linked switched video telephone system
GB9120462D0 (en) A location system
EP0535880A3 (en) Carrier recovery for qpsk
GB9213594D0 (en) A steam-raising system
HK106796A (en) Device for correcting a video signal
EP0510767A3 (en) Device for demodulating a colour signal into a television signal