ES2095866T3 - Procesamiento de señales de video. - Google Patents

Procesamiento de señales de video.

Info

Publication number
ES2095866T3
ES2095866T3 ES90312286T ES90312286T ES2095866T3 ES 2095866 T3 ES2095866 T3 ES 2095866T3 ES 90312286 T ES90312286 T ES 90312286T ES 90312286 T ES90312286 T ES 90312286T ES 2095866 T3 ES2095866 T3 ES 2095866T3
Authority
ES
Spain
Prior art keywords
signal
photography
coupled
linear
low level
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 - Lifetime
Application number
ES90312286T
Other languages
English (en)
Inventor
Peter Eduard Haferl
Thomas Heinz Sauder
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.)
RCA Licensing Corp
Original Assignee
RCA Licensing 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
Priority claimed from GB898925438A external-priority patent/GB8925438D0/en
Application filed by RCA Licensing Corp filed Critical RCA Licensing Corp
Application granted granted Critical
Publication of ES2095866T3 publication Critical patent/ES2095866T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction

Abstract

UN SISTEMA DE PROCESAMIENTO DE LA SEÑAL DE VIDEO NO LINEAL PROPORCIONA UNA CORRECCION GAMMA PARA MEJORAR LA INTERPRETACION DE LOS DETALLES DE UNA FOTOGRAFIA CERCANOS AL NEGRO. ADEMAS, SE MEJORA EL BRILLO DE LA FOTOGRAFIA UTILIZANDO UN CIRCUITO DE REALCE DEPENDIENTE DEL BRILLO Y DE LA FRECUENCIA QUE PROPORCIONA UN CONTRASTE DE LA SEÑAL DETALLADO Y AUMENTADO EN LAS AREAS BRILLANTES DE LA FOTOGRAFIA. EN CADA CANAL DE COLOR, LA SEÑAL DE COLOR RESPECTIVA (R, G, B) SE SEPARA GRADUALMENTE (18) EN UNA PARTE DE SEÑAL DE AMPLITUD DE BAJO NIVEL (V2) Y EN OTRA PARTE DE SEÑAL DE AMPLITUD DE MAS ALTO NIVEL (V3). LA PARTE DE AMPLITUD DE MAS ALTO NIVEL (V3) ESTARA FILTRADA DE FRECUENCIAS DE ALTO PASO (20). LA PARTE DE SEÑAL DE BAJO NIVEL (V2) Y LA PARTE DE SEÑAL DE AMPLITUD MAS ALTA FILTRADA DE PASO ALTO (V4) SE AÑADEN (R1, R2, R4) A LA SEÑAL DE VIDEO LINEAL ORIGINAL (V1 O R) PARA PRODUCIR UNA SEÑAL COMBINADA (15) ACOPLADA (12) AL CINESCOPIO. LA PARTE DE SEÑAL DE BAJO NIVEL (V2) ESTA ACOPLADA CON CC (R2) ALA SEÑAL LINEAL (V1) Y LA PARTE DE SEÑAL DE ALTO NIVEL ESTA ACOPLADA CON CA (C2) A LA SEÑAL LINEAL (V1).
ES90312286T 1989-11-10 1990-11-09 Procesamiento de señales de video. Expired - Lifetime ES2095866T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898925438A GB8925438D0 (en) 1989-11-10 1989-11-10 Non-linear rgb video signal processing
US07/583,881 US5083198A (en) 1989-11-10 1990-09-19 Nonlinear RGB video signal processing

Publications (1)

Publication Number Publication Date
ES2095866T3 true ES2095866T3 (es) 1997-03-01

Family

ID=26296183

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90312286T Expired - Lifetime ES2095866T3 (es) 1989-11-10 1990-11-09 Procesamiento de señales de video.

Country Status (19)

Country Link
EP (1) EP0427564B1 (es)
JP (1) JP2696728B2 (es)
CN (1) CN1031093C (es)
AT (1) ATE146324T1 (es)
AU (1) AU648276B2 (es)
BR (1) BR9005666A (es)
CA (1) CA2027337C (es)
CZ (1) CZ285617B6 (es)
DE (1) DE69029369T2 (es)
DK (1) DK0427564T3 (es)
ES (1) ES2095866T3 (es)
FI (1) FI98184C (es)
GR (1) GR3022555T3 (es)
HU (1) HU208774B (es)
MY (1) MY106634A (es)
PL (1) PL163853B1 (es)
PT (1) PT95719B (es)
SG (1) SG82530A1 (es)
TR (1) TR26358A (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137373C1 (es) * 1991-11-13 1993-06-17 Siemens Ag, 8000 Muenchen, De
MY110211A (en) * 1992-06-17 1998-02-28 Rca Thomson Licensing Corp Kinescope driver apparatus with contrast enhancement.
DE4300304C2 (de) * 1993-01-08 2003-07-17 Bts Holding Internat Bv Breda Schaltungsanordnung zur Gamma-Korrektur
US5349389A (en) * 1993-04-14 1994-09-20 Rca Thomson Licensing Corporation Video attenuator with output combined with signal from non-linear shunt branch to provide gamma correction and high frequency detail enhancement
US5889565A (en) * 1996-05-28 1999-03-30 Philips Electronics North America Corporation Method and apparatus for improving the color rendition of color television receivers
US6961066B2 (en) 1999-04-13 2005-11-01 Athentech Technologies, Inc. Automatic color adjustment for digital images
JP5116487B2 (ja) * 2005-01-26 2013-01-09 ティーピー ビジョン ホールディング ビー ヴィ スパークル処理

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB855587A (en) * 1956-04-12 1960-12-07 Fernseh Gmbh Improvements in or relating to apparatus for the photographic recording of television or like signals
JPS5136194A (es) * 1974-09-20 1976-03-26 Sanyo Jido Hanbaiki Kk
US4038685A (en) * 1975-03-31 1977-07-26 Rca Corporation Apparatus for automatic gamma control of television color signals
US4057828A (en) * 1975-11-17 1977-11-08 Harris Corporation Contrast compression circuits
US4262304A (en) * 1979-07-16 1981-04-14 Faroudja Y C Low level/signal booster for television transition
JPS5820096A (ja) * 1981-07-29 1983-02-05 Toshiba Corp デイジタルガンマ補正回路
JPS5981978A (ja) * 1982-11-01 1984-05-11 Matsushita Electric Ind Co Ltd 映像信号補正回路
JP2661036B2 (ja) * 1987-05-22 1997-10-08 松下電器産業株式会社 輪郭補正装置
US4812905A (en) * 1988-01-15 1989-03-14 Rossi John P System for compensating for the violation of the constant luminance principle in color television systems
JP2605780B2 (ja) * 1988-02-13 1997-04-30 ソニー株式会社 輝度信号のガンマ補正回路

Also Published As

Publication number Publication date
PL163853B1 (pl) 1994-05-31
PL287704A1 (en) 1991-07-29
EP0427564A3 (en) 1992-01-08
CZ533990A3 (cs) 1999-06-16
CN1031093C (zh) 1996-02-21
DE69029369D1 (de) 1997-01-23
EP0427564A2 (en) 1991-05-15
CZ285617B6 (cs) 1999-10-13
DK0427564T3 (da) 1997-06-02
HU907084D0 (en) 1991-05-28
CA2027337A1 (en) 1991-05-11
FI98184B (fi) 1997-01-15
FI98184C (fi) 1997-04-25
HU208774B (en) 1993-12-28
PT95719A (pt) 1992-06-30
BR9005666A (pt) 1991-09-17
AU6599290A (en) 1991-05-16
AU648276B2 (en) 1994-04-21
MY106634A (en) 1995-06-30
HUT55932A (en) 1991-06-28
CN1051651A (zh) 1991-05-22
ATE146324T1 (de) 1996-12-15
PT95719B (pt) 1998-07-31
DE69029369T2 (de) 1997-04-10
JPH03185973A (ja) 1991-08-13
GR3022555T3 (en) 1997-05-31
TR26358A (tr) 1995-03-15
FI905472A0 (fi) 1990-11-05
CA2027337C (en) 2001-04-24
EP0427564B1 (en) 1996-12-11
SG82530A1 (en) 2001-08-21
JP2696728B2 (ja) 1998-01-14

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