MXPA04005014A - Senal de tiempos alternantes para un modulador de banda lateral vestigial. - Google Patents

Senal de tiempos alternantes para un modulador de banda lateral vestigial.

Info

Publication number
MXPA04005014A
MXPA04005014A MXPA04005014A MXPA04005014A MXPA04005014A MX PA04005014 A MXPA04005014 A MX PA04005014A MX PA04005014 A MXPA04005014 A MX PA04005014A MX PA04005014 A MXPA04005014 A MX PA04005014A MX PA04005014 A MXPA04005014 A MX PA04005014A
Authority
MX
Mexico
Prior art keywords
signal
demodulator
broadcast
vfo
locked loop
Prior art date
Application number
MXPA04005014A
Other languages
English (en)
Inventor
Gothard Knutson Paul
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of MXPA04005014A publication Critical patent/MXPA04005014A/es

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]
    • H04N21/40—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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/68—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for wholly or partially suppressing the carrier or one side band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplitude Modulation (AREA)
  • Synchronizing For Television (AREA)

Abstract

Una senal (35) de sincronizacion del re-modulador se genera por un circuito (33) de fase bloqueada, la cual se acopla con una senal (5) de banda lateral vestigial de transmision. Dentro de la senal (5) se encuentran datos de sincronizacion muy exactos que se acoplan con un demodulador (31). Las senales de sincronizacion para el demodulador son provistas por un oscilador (32) de frecuencia variable que recibe la senal de correccion desde el circuito de fase bloqueada (33) alojado dentro del demodulador. El circuito de fase bloqueada genera la senal de correccion al comparar la frecuencia de salida VFO (36) con los datos de sincronizacion incrustados dentro de la senal (5) de transmision. Un registro (203, 303, 403) de valor mantiene la frecuencia VFO promedio reciente. Un multiplexor (203, 304, 404) selecciona los datos de registro de valor para controlar el VFO (32, 220, 320) en ausencia de los datos de sincronizacion de transmision.
MXPA04005014A 2001-11-26 2002-11-25 Senal de tiempos alternantes para un modulador de banda lateral vestigial. MXPA04005014A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/994,392 US6940936B2 (en) 2001-11-26 2001-11-26 Alternate timing signal for a vestigial sideband modulator
PCT/US2002/037959 WO2003047089A1 (en) 2001-11-26 2002-11-25 Alternate timing signal for a vestigial sideband modulator

Publications (1)

Publication Number Publication Date
MXPA04005014A true MXPA04005014A (es) 2004-08-11

Family

ID=25540623

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA04005014A MXPA04005014A (es) 2001-11-26 2002-11-25 Senal de tiempos alternantes para un modulador de banda lateral vestigial.

Country Status (8)

Country Link
US (1) US6940936B2 (es)
JP (1) JP4426299B2 (es)
KR (1) KR100941012B1 (es)
CN (1) CN100417014C (es)
AU (1) AU2002365583A1 (es)
MX (1) MXPA04005014A (es)
MY (1) MY135388A (es)
WO (1) WO2003047089A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5375738B2 (ja) * 2010-05-18 2013-12-25 ソニー株式会社 信号伝送システム
US20240022390A1 (en) * 2022-07-15 2024-01-18 Hughes Network Systems Method and Apparatus for Synchronizing Frequency in remote terminals

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701023A (en) * 1971-06-29 1972-10-24 Ibm Phase jitter extraction method for data transmission systems
US4748667A (en) * 1986-11-04 1988-05-31 Scientific Atlanta Jamming signal scrambling and descrambling systems for CATV
US5353312A (en) 1991-12-27 1994-10-04 At&T Bell Laboratories Equalizer-based timing recovery
US5706057A (en) * 1994-03-21 1998-01-06 Rca Thomson Licensing Corporation Phase detector in a carrier recovery network for a vestigial sideband signal
US5805242A (en) 1994-03-21 1998-09-08 Thomson Consumer Electronics, Inc. Carrier independent timing recovery system for a vestigial sideband modulated signal
US5477199A (en) * 1994-04-05 1995-12-19 Scientific-Atlanta, Inc. Digital quadrature amplitude and vestigial sideband modulation decoding method and apparatus
US5673293A (en) 1994-09-08 1997-09-30 Hitachi America, Ltd. Method and apparatus for demodulating QAM and VSB signals
KR0170690B1 (ko) 1995-09-23 1999-03-20 김광호 반송파 및 심볼타이밍 복원완료 검출회로와 그 방법 및 이를 채용한 고해상도 텔레비젼
US5799037A (en) 1996-02-16 1998-08-25 David Sarnoff Research Center Inc. Receiver capable of demodulating multiple digital modulation formats
US5802461A (en) 1996-09-16 1998-09-01 Texas Instruments Incorporated Apparatus and method for timing recovery in vestigial sibeband modulation
JP3228708B2 (ja) * 1998-04-03 2001-11-12 パイオニア株式会社 伝送システムにおける受信インターフェース装置
MXPA02006552A (es) * 1999-12-30 2003-04-10 Zentih Electronics Corp Medio de comunicacion secreto rf para dtv.

Also Published As

Publication number Publication date
WO2003047089A1 (en) 2003-06-05
JP4426299B2 (ja) 2010-03-03
MY135388A (en) 2008-04-30
US20030099317A1 (en) 2003-05-29
CN100417014C (zh) 2008-09-03
KR100941012B1 (ko) 2010-02-05
JP2005512364A (ja) 2005-04-28
AU2002365583A1 (en) 2003-06-10
CN1593004A (zh) 2005-03-09
US6940936B2 (en) 2005-09-06
KR20040068160A (ko) 2004-07-30

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