MX3271E - Mejoras en aparato para procesar señales de television - Google Patents

Mejoras en aparato para procesar señales de television

Info

Publication number
MX3271E
MX3271E MX100303U MX10030376U MX3271E MX 3271 E MX3271 E MX 3271E MX 100303 U MX100303 U MX 100303U MX 10030376 U MX10030376 U MX 10030376U MX 3271 E MX3271 E MX 3271E
Authority
MX
Mexico
Prior art keywords
gain
coupled
voltage source
potentiometer
signal processing
Prior art date
Application number
MX100303U
Other languages
English (en)
Inventor
Jack Avins
Bernard Joseph Yorkanis
Original Assignee
Rca 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 Corp filed Critical Rca Corp
Publication of MX3271E publication Critical patent/MX3271E/es

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
    • H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier in emitter-coupled or cascode amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon ambient light
    • 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
    • H04N9/648—Video amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Television Receiver Circuits (AREA)

Abstract

La presente invención se refiere a mejoras en aparato para procesar señales de televisión, que tiene un canal de procesamiento de señal de luminancia y un canal de procesamiento de señal de crominancia, teniendo el canal de procesamiento de señal de lunimancia un primer amplificador de ganancia variable que tiene una característica de ganancia contra voltaje de control que incluye una porción lineal extrapolada para interrupción a un voltaje de control Vo', teniendo el canal de procesamiento de señal de crominancia un segundo amplificador de ganancia variable que tiene una característica de ganacia contra voltaje de control extrapolada para interrupción a un voltaje de control AVo'; una fuente de voltaje que controla la ganancia acoplada a una terminal de control de cada uno de los amplificadores de ganancia variable; caracterizadas en que un primer potenciómetro está acoplado entre una fuente de voltaje, prácticamente igual a Vo', a la fuente de voltaje que controla la ganancia; estando acoplado el limpiador del primer potenciómetro al terminal de control de ganancia del primer amplificador de luminancia; un segundo potanciómetro está acoplado entre una fuente de voltaje prácticamente igual a AVo', y a la fuente de voltaje que controla la ganancia, estando acoplado al limpiador del segundo potenciómetro al terminal de control de ganancia del amplificador de crominancia.
MX100303U 1975-05-23 1976-05-14 Mejoras en aparato para procesar señales de television MX3271E (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/580,690 US3961361A (en) 1975-05-23 1975-05-23 Gain control arrangement useful in a television signal processing system

Publications (1)

Publication Number Publication Date
MX3271E true MX3271E (es) 1980-08-12

Family

ID=24322142

Family Applications (1)

Application Number Title Priority Date Filing Date
MX100303U MX3271E (es) 1975-05-23 1976-05-14 Mejoras en aparato para procesar señales de television

Country Status (19)

Country Link
US (1) US3961361A (es)
JP (1) JPS51144521A (es)
AT (1) AT361055B (es)
AU (1) AU508726B2 (es)
BE (1) BE842122A (es)
BR (1) BR7603174A (es)
CA (1) CA1066401A (es)
DE (1) DE2622866B2 (es)
DK (1) DK225576A (es)
ES (1) ES448125A1 (es)
FI (1) FI761373A (es)
FR (1) FR2312153A1 (es)
GB (1) GB1551083A (es)
MX (1) MX3271E (es)
NL (1) NL7605465A (es)
NZ (1) NZ180914A (es)
PL (1) PL112617B1 (es)
SE (1) SE414571B (es)
ZA (1) ZA762826B (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1597217A (en) * 1977-05-09 1981-09-03 Sanyo Electric Co Colour level automatic control signal generating circuit arrangement
US4181916A (en) * 1978-03-27 1980-01-01 Rca Corporation Liquid crystal channel number display responsive to ambient light level
US4181915A (en) * 1978-03-27 1980-01-01 Rca Corporation LED Channel number display responsive to ambient light level
US4198652A (en) * 1978-05-11 1980-04-15 Rca Corporation D.C. Gain controlled amplifier
US4386345A (en) * 1981-09-22 1983-05-31 Sperry Corporation Color and brightness tracking in a cathode ray tube display system
US4511921A (en) * 1982-06-16 1985-04-16 Rca Corporation Television receiver with manual and selectively disabled automatic picture control
FR2651080A1 (fr) * 1989-08-18 1991-02-22 Hewlett Packard France Sa Dispositif de commande de gain pour moniteur video
US4982287A (en) * 1989-11-01 1991-01-01 Rca Licensing Corporation Control of brightness level adapted to control of contrast
KR940011301B1 (ko) * 1990-09-21 1994-12-05 바마크 악티엔게젤샤프트 멀티스테이션 섬유기계에서 권사장치를 자동적으로 운전하는 방법
AU5856194A (en) * 1993-02-05 1994-08-29 Barath, Ludwig Environment-dependent automatic luminance control for display scrreens
DE4444899C1 (de) * 1994-12-16 1996-01-25 Philips Patentverwaltung Schaltungsanordnung zur amplitudenabhängigen Bedämpfung eines Fernsehsignals
US6947099B2 (en) 2000-12-21 2005-09-20 Thomson Licensing Automatic chroma control circuit with controlled saturation reduction
US6639574B2 (en) * 2002-01-09 2003-10-28 Landmark Screens Llc Light-emitting diode display
US7948501B2 (en) * 2004-03-09 2011-05-24 Olympus Corporation Display control apparatus and method under plural different color spaces
US9231685B2 (en) * 2009-11-16 2016-01-05 Maxlinear, Inc. Diversity blocker protection
US9530342B2 (en) 2013-09-10 2016-12-27 Microsoft Technology Licensing, Llc Ambient light context-aware display

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374310A (en) * 1965-08-23 1968-03-19 George L. Beers Color television receiver with simultaneous brightness and color saturation controls
US3467770A (en) * 1966-06-17 1969-09-16 Hoffman Products Corp Dual channel automatic control circuit
DE1805133B1 (de) * 1968-10-25 1970-11-26 Saba Gmbh Schaltungsanordnung fuer die Einstellung von Farbsaettigung und Kontrast in einem Farbfernsehempfaenger
US3715463A (en) * 1971-03-18 1973-02-06 Warwick Electronics Inc Tracking control circuits using a common potentiometer
US3736520A (en) * 1971-11-23 1973-05-29 Honeywell Inf Systems Precision variable gain amplifier with linear log-gain versus control-voltage characteristic
US3813686A (en) * 1972-11-27 1974-05-28 Magnovox Co Ambient light responsive control of brightness, contrast and color saturation

Also Published As

Publication number Publication date
JPS51144521A (en) 1976-12-11
US3961361A (en) 1976-06-01
ZA762826B (en) 1977-04-27
GB1551083A (en) 1979-08-22
AT361055B (de) 1981-02-25
FR2312153A1 (fr) 1976-12-17
BR7603174A (pt) 1977-02-15
DE2622866B2 (de) 1979-03-08
BE842122A (fr) 1976-09-16
DE2622866A1 (de) 1976-11-25
CA1066401A (en) 1979-11-13
NZ180914A (en) 1980-08-26
DK225576A (da) 1976-11-24
SE414571B (sv) 1980-08-04
SE7605563L (sv) 1976-11-24
ATA380776A (de) 1980-07-15
AU508726B2 (en) 1980-04-03
PL112617B1 (en) 1980-10-31
NL7605465A (nl) 1976-11-25
AU1399376A (en) 1977-11-24
FI761373A (es) 1976-11-24
ES448125A1 (es) 1977-11-01

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