HK72494A - Luminance signal forming circuits - Google Patents
Luminance signal forming circuitsInfo
- Publication number
- HK72494A HK72494A HK72494A HK72494A HK72494A HK 72494 A HK72494 A HK 72494A HK 72494 A HK72494 A HK 72494A HK 72494 A HK72494 A HK 72494A HK 72494 A HK72494 A HK 72494A
- Authority
- HK
- Hong Kong
- Prior art keywords
- luminance signal
- signal forming
- forming circuits
- circuits
- luminance
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/202—Gamma control
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
- H04N25/11—Arrangement of colour filter arrays [CFA]; Filter mosaics
- H04N25/13—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements
- H04N25/135—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on four or more different wavelength filter elements
- H04N25/136—Arrangement of colour filter arrays [CFA]; Filter mosaics characterised by the spectral characteristics of the filter elements based on four or more different wavelength filter elements using complementary colours
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Image Signal Generators (AREA)
- Picture Signal Circuits (AREA)
- Studio Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62002868A JPH0810940B2 (ja) | 1987-01-09 | 1987-01-09 | 輝度信号形成回路 |
Publications (1)
Publication Number | Publication Date |
---|---|
HK72494A true HK72494A (en) | 1994-08-05 |
Family
ID=11541336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK72494A HK72494A (en) | 1987-01-09 | 1994-07-28 | Luminance signal forming circuits |
Country Status (6)
Country | Link |
---|---|
US (1) | US4833527A (xx) |
JP (1) | JPH0810940B2 (xx) |
KR (1) | KR960016851B1 (xx) |
DE (1) | DE3800363C2 (xx) |
GB (1) | GB2200012B (xx) |
HK (1) | HK72494A (xx) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2614850B2 (ja) * | 1986-09-25 | 1997-05-28 | ソニー株式会社 | 撮像信号処理回路 |
US4903121A (en) * | 1987-05-14 | 1990-02-20 | Matsushita Electric Industrial Co., Ltd. | Image pick up apparatus having pixel compensation circuit |
US5283634A (en) * | 1987-06-18 | 1994-02-01 | Canon Kabushiki Kaisha | Luminance signal correcting method |
JPH01196978A (ja) * | 1988-01-30 | 1989-08-08 | Fuji Photo Film Co Ltd | 書類撮影用ビデオカメラ |
JP2594627B2 (ja) * | 1988-02-26 | 1997-03-26 | オリンパス光学工業株式会社 | 電子内視鏡装置 |
JPH02107091A (ja) * | 1988-10-17 | 1990-04-19 | Hitachi Ltd | ビデオカメラの信号処理回路 |
US5581298A (en) * | 1988-11-09 | 1996-12-03 | Canon Kabushiki Kaisha | Color signal processing apparatus using plural luminance signals |
US5008741A (en) * | 1989-04-07 | 1991-04-16 | Tektronix, Inc. | Method and apparatus for processing component signals to preserve high frequency intensity information |
US5534948A (en) * | 1989-08-15 | 1996-07-09 | Rank Cintel Limited | Method and apparatus for reducing the effect of alias components produced through non-linear digital signal processing, such as gamma correction, by selective attenuation |
JP3035930B2 (ja) * | 1989-10-19 | 2000-04-24 | ソニー株式会社 | カラー固体撮像装置 |
KR920006601Y1 (ko) * | 1989-12-31 | 1992-09-21 | 삼성전자 주식회사 | 보색 필터 ccd를 이용한 원색 신호 출력회로 |
JPH044675A (ja) * | 1990-04-23 | 1992-01-09 | Canon Inc | 電子カメラ |
US5734424A (en) * | 1990-08-08 | 1998-03-31 | Canon Kabushiki Kaisha | Image pickup apparatus capable of providing moving video signal and still video signal |
JP3263924B2 (ja) * | 1990-09-14 | 2002-03-11 | ソニー株式会社 | カラー撮像装置 |
JP2748678B2 (ja) * | 1990-10-09 | 1998-05-13 | 松下電器産業株式会社 | 階調補正方法および階調補正装置 |
JP2547686B2 (ja) * | 1991-06-21 | 1996-10-23 | 三洋電機株式会社 | 映像信号処理回路 |
CA2095756C (en) * | 1992-08-14 | 2001-04-24 | Albert D. Edgar | Method and apparatus for linear color processing |
JP3666886B2 (ja) * | 1992-12-28 | 2005-06-29 | キヤノン株式会社 | 撮像装置 |
US5345265A (en) * | 1992-12-31 | 1994-09-06 | Samsung Electronics Co., Ltd. | Gamma correction circuit for a video camera |
US6636646B1 (en) * | 2000-07-20 | 2003-10-21 | Eastman Kodak Company | Digital image processing method and for brightness adjustment of digital images |
JP4654545B2 (ja) * | 2001-07-11 | 2011-03-23 | パナソニック株式会社 | 単板式カラー撮像装置 |
JP4265546B2 (ja) * | 2005-01-31 | 2009-05-20 | ソニー株式会社 | 撮像装置、画像処理装置および画像処理方法 |
US7583303B2 (en) * | 2005-01-31 | 2009-09-01 | Sony Corporation | Imaging device element |
GB0503545D0 (en) * | 2005-02-21 | 2005-03-30 | E2V Tech Uk Ltd | Low light level colour camera |
JP5018770B2 (ja) * | 2006-03-20 | 2012-09-05 | ソニー株式会社 | 画像信号処理装置及び画像信号処理方法 |
CN103327219B (zh) * | 2012-03-21 | 2016-12-14 | 浙江大华技术股份有限公司 | 一种视频图像对比度调整方法及装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2117909B1 (xx) * | 1970-12-16 | 1976-12-03 | Fernseh Gmbh | |
JPS60240282A (ja) * | 1984-05-15 | 1985-11-29 | Matsushita Electric Ind Co Ltd | 映像信号合成装置 |
US4697208A (en) * | 1985-06-13 | 1987-09-29 | Olympus Optical Co., Ltd. | Color image pickup device with complementary color type mosaic filter and gamma compensation means |
AU599139B2 (en) * | 1986-09-27 | 1990-07-12 | Sony Corporation | Luminance signal forming circuit |
-
1987
- 1987-01-09 JP JP62002868A patent/JPH0810940B2/ja not_active Expired - Lifetime
- 1987-12-16 US US07/133,787 patent/US4833527A/en not_active Expired - Lifetime
-
1988
- 1988-01-07 GB GB8800314A patent/GB2200012B/en not_active Expired - Lifetime
- 1988-01-08 DE DE3800363A patent/DE3800363C2/de not_active Expired - Fee Related
- 1988-01-08 KR KR1019880000055A patent/KR960016851B1/ko not_active IP Right Cessation
-
1994
- 1994-07-28 HK HK72494A patent/HK72494A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3800363A1 (de) | 1988-07-21 |
KR880009516A (ko) | 1988-09-15 |
DE3800363C2 (de) | 1999-04-22 |
GB2200012A (en) | 1988-07-20 |
GB2200012B (en) | 1990-12-05 |
GB8800314D0 (en) | 1988-02-10 |
US4833527A (en) | 1989-05-23 |
KR960016851B1 (ko) | 1996-12-21 |
JPS63171090A (ja) | 1988-07-14 |
JPH0810940B2 (ja) | 1996-01-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PE | Patent expired |
Effective date: 20080106 |