ES8606964A1 - Procedimiento de desmodulacion coherente de ondas portadoras y similares y sistema correspondiente - Google Patents

Procedimiento de desmodulacion coherente de ondas portadoras y similares y sistema correspondiente

Info

Publication number
ES8606964A1
ES8606964A1 ES536449A ES536449A ES8606964A1 ES 8606964 A1 ES8606964 A1 ES 8606964A1 ES 536449 A ES536449 A ES 536449A ES 536449 A ES536449 A ES 536449A ES 8606964 A1 ES8606964 A1 ES 8606964A1
Authority
ES
Spain
Prior art keywords
bursts
acquisition
frequency
carrier
useful
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES536449A
Other languages
English (en)
Other versions
ES536449A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TELEDIFFUSION DIT TELEDIF ETS
Original Assignee
TELEDIFFUSION DIT TELEDIF ETS
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 TELEDIFFUSION DIT TELEDIF ETS filed Critical TELEDIFFUSION DIT TELEDIF ETS
Publication of ES536449A0 publication Critical patent/ES536449A0/es
Publication of ES8606964A1 publication Critical patent/ES8606964A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/084—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only
    • H04N7/085—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only the inserted signal being digital
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
    • H04L27/2276—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals using frequency multiplication or harmonic tracking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/04—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
    • H04N7/045—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier the carrier being frequency modulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Relay Systems (AREA)

Abstract

PROCEDIMIENTO DE DESMODULACION COHERENTE DE ONDAS PORTADORAS Y SIMILARES, CON MODULACION NUMERICA POR DESPLAZAMIENTO DE FASE O DESPLAZAMIENTO DE FRECUENCIA CON FASE CONTINUA, CON PORTADORA EMITIDA POR SALVAS UTILES REGULARMENTE SEPARADAS EN EL TIEMPO, Y CON CONTINUIDAD DE FASE DE UNA SALVA A LA SIGUIENTE. CARACTERIZADO PORQUE SE EMITEN UNAS SALVAS DE ADQUISICION A LA FRECUENCIA DE LA PORTADORA, QUE PRESENTAN UNAS CARACTERISTICAS CONSTANTES Y PARTICULARES, Y QUE TIENEN UNA DURACION SUPERIOR A LA DE LAS SALVAS UTILES, CON UN PERIODO DE REPETICION MAS LARGO EN ORDEN DE DIMENSION, QUE EL PERIODO DE EMISION DE LAS SALVAS DE PORTADORA MODULADA; Y PORQUE SE SOMETEN LAS SALVAS DE ADQUISICION A ELEVACION AL CUADRADO Y A SELECCION DE FRECUENCIA DOBLE DE LA FRECUENCIA PORTADORA, UTILIZANDO LAS CARACTERISTICAS DE LAS SALVAS DE ADQUISICION.
ES536449A 1983-09-21 1984-09-21 Procedimiento de desmodulacion coherente de ondas portadoras y similares y sistema correspondiente Expired ES8606964A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8315019A FR2552282B1 (fr) 1983-09-21 1983-09-21 Procede et dispositif de demodulation coherente de porteuse a modulation numerique

Publications (2)

Publication Number Publication Date
ES536449A0 ES536449A0 (es) 1986-05-16
ES8606964A1 true ES8606964A1 (es) 1986-05-16

Family

ID=9292411

Family Applications (1)

Application Number Title Priority Date Filing Date
ES536449A Expired ES8606964A1 (es) 1983-09-21 1984-09-21 Procedimiento de desmodulacion coherente de ondas portadoras y similares y sistema correspondiente

Country Status (9)

Country Link
US (1) US4585998A (es)
EP (1) EP0140753B1 (es)
CA (1) CA1227546A (es)
DE (1) DE3469663D1 (es)
DK (1) DK448884A (es)
ES (1) ES8606964A1 (es)
FR (1) FR2552282B1 (es)
NO (1) NO164949C (es)
PT (1) PT79252B (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211347A (ja) * 1985-07-09 1987-01-20 Nec Home Electronics Ltd ４相ｐｓｋ復調装置
US4821097A (en) * 1987-03-05 1989-04-11 General Instrument Corporation Apparatus and method for providing digital audio on the sound carrier of a standard television signal
US4906875A (en) * 1988-05-09 1990-03-06 Hewlett-Packard Company Digital integtrating mixer
US4987386A (en) * 1989-10-03 1991-01-22 Communications Satellite Corporation Coherent phase and frequency recovery method and circuit
JP3060521B2 (ja) * 1990-10-25 2000-07-10 日本電気株式会社 復調回路
CN1117457C (zh) * 1997-06-13 2003-08-06 株式会社建伍 时钟再生电路
US5852636A (en) * 1997-08-08 1998-12-22 Serge Mathieu Method of and apparatus for modulation of FSK carrier in a very narrow band
JP3930180B2 (ja) * 1999-01-21 2007-06-13 富士通株式会社 デジタル信号復調回路及び方法
FR2824205B1 (fr) * 2001-04-27 2004-11-05 Thomson Csf Procede de multiplication de frequence dans un equipement de radiocommunication
US7929649B2 (en) * 2004-06-30 2011-04-19 Stmicroelectronics, Inc. Analog/digital carrier differentiation in digital cable receivers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525945A (en) * 1968-08-14 1970-08-25 Communications Satellite Corp System for reconstituting a carrier reference signal using a switchable phase lock loop
NL7016628A (es) * 1970-11-13 1972-05-16
JPS53136949A (en) * 1977-05-06 1978-11-29 Mitsubishi Electric Corp N-phase psk carrier reproducing circuit
CA1115789A (en) * 1977-05-12 1982-01-05 Richard P. Scott Phase shift keyed systems
JPS55132164A (en) * 1979-03-30 1980-10-14 Nec Corp Carrier regenerating circuit for psk demodulator
FR2459594A1 (fr) * 1979-06-15 1981-01-09 Telediffusion Fse Systeme de television a multiplexage de signaux d'image et/ou de donnees et de signaux numeriques de son

Also Published As

Publication number Publication date
NO164949B (no) 1990-08-20
NO164949C (no) 1990-11-28
DK448884A (da) 1985-03-22
NO843760L (no) 1985-03-22
DE3469663D1 (en) 1988-04-07
CA1227546A (en) 1987-09-29
EP0140753A1 (fr) 1985-05-08
EP0140753B1 (fr) 1988-03-02
US4585998A (en) 1986-04-29
ES536449A0 (es) 1986-05-16
PT79252B (fr) 1986-08-22
FR2552282A1 (fr) 1985-03-22
DK448884D0 (da) 1984-09-20
FR2552282B1 (fr) 1990-07-13
PT79252A (fr) 1984-10-01

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