MX9605049A - Aparato para controlar la ganancia de conversion de un convertidor reductor. - Google Patents

Aparato para controlar la ganancia de conversion de un convertidor reductor.

Info

Publication number
MX9605049A
MX9605049A MX9605049A MX9605049A MX9605049A MX 9605049 A MX9605049 A MX 9605049A MX 9605049 A MX9605049 A MX 9605049A MX 9605049 A MX9605049 A MX 9605049A MX 9605049 A MX9605049 A MX 9605049A
Authority
MX
Mexico
Prior art keywords
gain control
control signal
gain
down converter
outdoor unit
Prior art date
Application number
MX9605049A
Other languages
English (en)
Other versions
MXPA96005049A (es
Inventor
Max Ward Muterspaugh
Original Assignee
Thomson Consumer Electronics
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
Priority claimed from US08/624,302 external-priority patent/US6434374B1/en
Application filed by Thomson Consumer Electronics filed Critical Thomson Consumer Electronics
Publication of MX9605049A publication Critical patent/MX9605049A/es
Publication of MXPA96005049A publication Critical patent/MXPA96005049A/es

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Superheterodyne Receivers (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

Un convertidor reductor, tal como un convertidor de bloque de sonido bajo (LNB), de la unidad externa (100) de un sistema receptor de microondas o vía satélite, terrestre, incluye un aparato para automáticamente controlar la ganancia de conversion del convertidor reductor. En una modalidad, el aparato de control de ganancia automática, incluye una etapa de RF controlable de ganancia (106) y un generador de señal de control de ganancia (146) para generar una señal de control de ganancia en respuesta a la señal de la salida del convertidor reductor, ambos están incluidos dentro de la unidad externa (100). En otra modalidad, la etapa de RF controlable de ganancia (106) está incluida en la unidad externa (200), pero el generador de señal de control de ganancia (220) está incluido en la unidad interna (202) del sistema receptor, y la señal de control de ganancia está acoplada a la unidad externa (200) en una forma directa o codificada. En el ultimo caso, la señal de control de ganancia codificada puede ser acoplada al convertidor reductor vía al cable coaxial (222) conectado entre las unidades externa (200) e interna (202). En un sistema receptor el cual procesa informacion digitalmente codificada, el régimen de error de la informacion, que es codificada, en la unidad interna (202), puede ser utilizado para generar la señal de control de ganancia para la etapa controlable de ganancia (106) de la unidad externa (200).
MXPA/A/1996/005049A 1995-10-23 1996-10-23 Aparato para controlar la ganancia de conversion de un convertidor reductor MXPA96005049A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US583795P 1995-10-23 1995-10-23
US60/005,837 1995-10-23
US08624302 1996-03-29
US08/624,302 US6434374B1 (en) 1996-03-29 1996-03-29 Apparatus for controlling the conversion gain of a down converter

Publications (2)

Publication Number Publication Date
MX9605049A true MX9605049A (es) 1997-09-30
MXPA96005049A MXPA96005049A (es) 1998-07-03

Family

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Also Published As

Publication number Publication date
HK1003687A1 (en) 1998-11-06
EP0771069B1 (en) 2004-07-21
DE69632940T2 (de) 2005-09-15
KR970024531A (ko) 1997-05-30
CA2188080C (en) 2003-03-11
CN1108659C (zh) 2003-05-14
IN190442B (es) 2003-07-26
KR100432595B1 (ko) 2004-08-02
CA2188080A1 (en) 1997-04-24
TW472439B (en) 2002-01-11
JP3833755B2 (ja) 2006-10-18
EP0771069A3 (en) 2002-01-23
JPH09139681A (ja) 1997-05-27
DE69632940D1 (de) 2004-08-26
CN1162218A (zh) 1997-10-15
MY117902A (en) 2004-08-30
EP0771069A2 (en) 1997-05-02

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