MX166074B - MODULADOR DE FRECUENCIA MODULADA DE 4.5 MHz (INTERPORTADORA) - Google Patents

MODULADOR DE FRECUENCIA MODULADA DE 4.5 MHz (INTERPORTADORA)

Info

Publication number
MX166074B
MX166074B MX011984A MX1198488A MX166074B MX 166074 B MX166074 B MX 166074B MX 011984 A MX011984 A MX 011984A MX 1198488 A MX1198488 A MX 1198488A MX 166074 B MX166074 B MX 166074B
Authority
MX
Mexico
Prior art keywords
frequency
signal
audio
carrier
interporter
Prior art date
Application number
MX011984A
Other languages
English (en)
Inventor
Daniel Marz
Original Assignee
Gen Instrument 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 Gen Instrument Corp filed Critical Gen Instrument Corp
Publication of MX166074B publication Critical patent/MX166074B/es

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0079—Measures to linearise modulation or reduce distortion of modulation characteristics

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Amplitude Modulation (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Liquid Crystal Substances (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

La presente invención se refiere a un circuito para producir una portadora de audio con frecuencia modulada en un sistema de distribución de señales de video, cuya salida se caracteriza porque comprende: generadores de una señal de frecuencia de referencia; divisores conectados con los generadores para dividir la señal de frecuencia de referencia en forma descendente a una señal de frecuencia relativamente baja; osciladores variables que reciben la salida de los divisores que operan a la frecuencia relativamente baja con una alimentación de control, para recibir una señal de audio con amplitud modulada, el oscilador variable tiene una salida que proporciona una señal con frecuencia modulada en la primer frecuencia relativamente baja, y convertidores ascendentes conectados con el oscilador variable para la salida de el oscilador con voltaje controlado a una frecuencia de audio portadora
MX011984A 1987-06-22 1988-06-21 MODULADOR DE FRECUENCIA MODULADA DE 4.5 MHz (INTERPORTADORA) MX166074B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/065,367 US4816781A (en) 1987-06-22 1987-06-22 FM modulator

Publications (1)

Publication Number Publication Date
MX166074B true MX166074B (es) 1992-12-17

Family

ID=22062221

Family Applications (1)

Application Number Title Priority Date Filing Date
MX011984A MX166074B (es) 1987-06-22 1988-06-21 MODULADOR DE FRECUENCIA MODULADA DE 4.5 MHz (INTERPORTADORA)

Country Status (10)

Country Link
US (1) US4816781A (es)
EP (1) EP0296790B1 (es)
JP (1) JPS6430309A (es)
AT (1) ATE101314T1 (es)
AU (1) AU608330B2 (es)
CA (1) CA1289654C (es)
DE (1) DE3887576T2 (es)
IE (1) IE62271B1 (es)
MX (1) MX166074B (es)
NZ (1) NZ225115A (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5257403A (en) * 1989-07-20 1993-10-26 Scientific-Atlanta, Inc. Method of subcarrier multiplication which preserves AM Information in FM systems
US5079525A (en) * 1989-12-08 1992-01-07 Sony Corporation Audio-video modulator system on ic chip
US5867536A (en) * 1997-02-11 1999-02-02 Hittite Microwave Corporation Digital synchronization of broadcast frequency
US6225891B1 (en) 2000-01-07 2001-05-01 Hittite Microwave Corp. Wide-angle, static and positional anticipatory object detection system
KR100396880B1 (ko) * 2000-08-28 2003-09-02 삼성전자주식회사 가변 반송 주파수를 가지는 저잡음 주파수 변조기

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521374B1 (fr) * 1982-02-11 1986-03-28 Radiotechnique Procede d'emission de television a plusieurs voies de son, et televiseur a plusieurs voies de son
US4546387A (en) * 1982-11-04 1985-10-08 General Instrument Corporation Circuit for providing accurately spaced video and sound carriers
FR2566608A1 (fr) * 1984-06-22 1985-12-27 Thomson Lgt Transmetteur de programmes audiovisuels par liaison fm et recepteur associe
US4707670A (en) * 1986-03-04 1987-11-17 Optical Disc Corporation PLL stabilized frequency modulator with extended low frequency range

Also Published As

Publication number Publication date
CA1289654C (en) 1991-09-24
DE3887576T2 (de) 1994-05-19
IE881770L (en) 1988-12-22
DE3887576D1 (de) 1994-03-17
ATE101314T1 (de) 1994-02-15
US4816781A (en) 1989-03-28
JPS6430309A (en) 1989-02-01
AU1823988A (en) 1988-12-22
EP0296790A3 (en) 1990-07-11
NZ225115A (en) 1990-01-29
IE62271B1 (en) 1995-01-25
EP0296790A2 (en) 1988-12-28
EP0296790B1 (en) 1994-02-02
AU608330B2 (en) 1991-03-28

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