SG82530A1 - Video signal processing - Google Patents

Video signal processing

Info

Publication number
SG82530A1
SG82530A1 SG9602392A SG1996002392A SG82530A1 SG 82530 A1 SG82530 A1 SG 82530A1 SG 9602392 A SG9602392 A SG 9602392A SG 1996002392 A SG1996002392 A SG 1996002392A SG 82530 A1 SG82530 A1 SG 82530A1
Authority
SG
Singapore
Prior art keywords
signal
signal portion
coupled
linear
low level
Prior art date
Application number
SG9602392A
Other languages
English (en)
Inventor
Peter Eduard Haferl
Thomas Heinz Sauder
Original Assignee
Rca Thomson 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 Thomson Licensing Corp filed Critical Rca Thomson Licensing Corp
Publication of SG82530A1 publication Critical patent/SG82530A1/en

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
SG9602392A 1989-11-10 1990-11-09 Video signal processing SG82530A1 (en)

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
SG82530A1 true SG82530A1 (en) 2001-08-21

Family

ID=26296183

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9602392A SG82530A1 (en) 1989-11-10 1990-11-09 Video signal processing

Country Status (19)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137373C1 (fr) * 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
WO2006079955A1 (fr) * 2005-01-26 2006-08-03 Koninklijke Philips Electronics N.V. Traitement de l'etoilement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Family Cites Families (7)

* 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 (fr) * 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
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
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Also Published As

Publication number Publication date
BR9005666A (pt) 1991-09-17
CZ285617B6 (cs) 1999-10-13
DK0427564T3 (da) 1997-06-02
EP0427564A3 (en) 1992-01-08
TR26358A (tr) 1995-03-15
PT95719B (pt) 1998-07-31
EP0427564A2 (fr) 1991-05-15
FI905472A0 (fi) 1990-11-05
DE69029369D1 (de) 1997-01-23
PT95719A (pt) 1992-06-30
HUT55932A (en) 1991-06-28
HU907084D0 (en) 1991-05-28
JP2696728B2 (ja) 1998-01-14
DE69029369T2 (de) 1997-04-10
FI98184C (fi) 1997-04-25
MY106634A (en) 1995-06-30
ES2095866T3 (es) 1997-03-01
CN1051651A (zh) 1991-05-22
FI98184B (fi) 1997-01-15
CN1031093C (zh) 1996-02-21
HU208774B (en) 1993-12-28
EP0427564B1 (fr) 1996-12-11
GR3022555T3 (en) 1997-05-31
CZ533990A3 (cs) 1999-06-16
CA2027337A1 (fr) 1991-05-11
CA2027337C (fr) 2001-04-24
PL163853B1 (pl) 1994-05-31
JPH03185973A (ja) 1991-08-13
ATE146324T1 (de) 1996-12-15
AU648276B2 (en) 1994-04-21
PL287704A1 (en) 1991-07-29
AU6599290A (en) 1991-05-16

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