CZ353898A3 - Zařízení pro gama kompenzaci - Google Patents
Zařízení pro gama kompenzaciInfo
- Publication number
- CZ353898A3 CZ353898A3 CZ983538A CZ353898A CZ353898A3 CZ 353898 A3 CZ353898 A3 CZ 353898A3 CZ 983538 A CZ983538 A CZ 983538A CZ 353898 A CZ353898 A CZ 353898A CZ 353898 A3 CZ353898 A3 CZ 353898A3
- Authority
- CZ
- Czechia
- Prior art keywords
- gamma compensation
- gamma
- compensation
- 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
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5133797 | 1997-03-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
CZ353898A3 true CZ353898A3 (cs) | 1999-03-17 |
CZ295874B6 CZ295874B6 (cs) | 2005-11-16 |
Family
ID=12884118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CZ19983538A CZ295874B6 (cs) | 1997-03-06 | 1998-03-05 | Zařízení pro gama kompenzaci |
Country Status (10)
Country | Link |
---|---|
US (1) | US6215529B1 (cs) |
EP (1) | EP0909515B1 (cs) |
JP (1) | JP3852956B2 (cs) |
KR (1) | KR100404491B1 (cs) |
CN (1) | CN1186947C (cs) |
BR (1) | BR9804773B1 (cs) |
CZ (1) | CZ295874B6 (cs) |
DE (1) | DE69806214T2 (cs) |
MY (1) | MY120447A (cs) |
WO (1) | WO1998039925A1 (cs) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6633343B2 (en) * | 2000-03-14 | 2003-10-14 | Matsushita Electric Industrial Co., Ltd. | Dynamic gamma correction apparatus |
US6507347B1 (en) * | 2000-03-24 | 2003-01-14 | Lighthouse Technologies Ltd. | Selected data compression for digital pictorial information |
JP4659272B2 (ja) * | 2001-05-31 | 2011-03-30 | パナソニック株式会社 | 階調補正装置 |
US7233705B2 (en) * | 2001-07-24 | 2007-06-19 | Hewlett-Packard Development Company, L.P. | Method and apparatus for reducing inaccuracies when processing color data with a tone map |
JP4271978B2 (ja) * | 2003-04-18 | 2009-06-03 | 株式会社日立製作所 | 映像表示装置 |
CN101110965B (zh) * | 2007-09-04 | 2011-08-31 | 晨星半导体股份有限公司 | 色彩值调整装置与方法 |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135492A (en) | 1979-04-09 | 1980-10-22 | Nec Corp | Gamma correction system for color pickup device |
JPS56107674A (en) * | 1980-01-31 | 1981-08-26 | Sony Corp | Gradation correcting device of video signal |
FR2506549A1 (fr) * | 1981-05-22 | 1982-11-26 | Thomson Csf | Dispositif de correction des informations couleur fournies par les tubes analyseurs d'une camera en vue d'ameliorer la perception des images |
FR2538983B1 (fr) * | 1982-12-30 | 1986-02-07 | Guichard Jacques | Procede de correction de couleur applicable a la prise de vues video et systeme mettant en oeuvre ce procede |
US4814861A (en) * | 1985-07-10 | 1989-03-21 | Canon Kabushiki Kaisha | Signal processing apparatus with independent gain control for chrominance and color signals |
US4903121A (en) * | 1987-05-14 | 1990-02-20 | Matsushita Electric Industrial Co., Ltd. | Image pick up apparatus having pixel compensation circuit |
JPH0281572A (ja) | 1988-09-19 | 1990-03-22 | Fuji Photo Film Co Ltd | 垂直輪郭強調抑制回路 |
US5089890A (en) * | 1989-02-06 | 1992-02-18 | Canon Kabushiki Kaisha | Gamma correction device |
KR100202344B1 (ko) * | 1990-03-26 | 1999-06-15 | 이데이 노부유끼 | 자동니제어회로 |
US5221963A (en) * | 1990-03-31 | 1993-06-22 | Minolta Camera Kabushiki Kaisha | Video camera having a video signal processing apparatus |
US5479204A (en) * | 1990-08-28 | 1995-12-26 | Fuji Photo Film Co., Ltd. | Negative-image signal processing apparatus |
US5185656A (en) * | 1991-10-11 | 1993-02-09 | Ikegami Tsushinki Co., Ltd. | Circuit for compressing image signal |
JPH05191675A (ja) * | 1992-01-14 | 1993-07-30 | Canon Inc | ガンマ補正回路及びそれを用いた撮像装置 |
US5764287A (en) * | 1992-08-31 | 1998-06-09 | Canon Kabushiki Kaisha | Image pickup apparatus with automatic selection of gamma correction valve |
JPH06105326A (ja) | 1992-09-22 | 1994-04-15 | Matsushita Electric Ind Co Ltd | 映像信号処理装置 |
JP3302423B2 (ja) * | 1992-12-28 | 2002-07-15 | 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 |
EP0613294B1 (en) * | 1993-02-24 | 1998-10-28 | Matsushita Electric Industrial Co., Ltd. | Gradation correction device and image sensing device therewith |
DE69421121T2 (de) * | 1993-06-30 | 2000-04-13 | Nec Corp | Farbvideokamera mit Gradationsverbesserung des dunklen Signalpegels |
BE1007590A3 (nl) * | 1993-10-01 | 1995-08-16 | Philips Electronics Nv | Videosignaalverwerkingsschakeling. |
JP3408316B2 (ja) * | 1994-04-18 | 2003-05-19 | 日本フィリップス株式会社 | ニー回路 |
JP3291694B2 (ja) * | 1994-04-25 | 2002-06-10 | 富士写真フイルム株式会社 | ネガ撮像装置におけるノイズ除去回路 |
KR0142263B1 (ko) * | 1994-08-06 | 1998-06-15 | 김광호 | 디지탈 감마 보정방법 및 그 장치 |
DE69534929T2 (de) * | 1994-09-30 | 2006-11-16 | Matsushita Electric Industrial Co., Ltd., Kadoma | Bildaufnahmevorrichtung |
US5565931A (en) * | 1994-10-31 | 1996-10-15 | Vivo Software. Inc. | Method and apparatus for applying gamma predistortion to a color image signal |
JPH08140112A (ja) * | 1994-11-10 | 1996-05-31 | Sony Corp | ガンマ補正回路 |
US5933199A (en) * | 1995-09-15 | 1999-08-03 | Lg Electronics Inc. | Gamma correction circuit using analog multiplier |
GB2305571B8 (en) * | 1995-09-22 | 2000-01-31 | Ibm | Display apparatus with gamma correction |
JP2951909B2 (ja) * | 1997-03-17 | 1999-09-20 | 松下電器産業株式会社 | 撮像装置の階調補正装置及び階調補正方法 |
-
1998
- 1998-03-05 BR BRPI9804773-6A patent/BR9804773B1/pt not_active IP Right Cessation
- 1998-03-05 CZ CZ19983538A patent/CZ295874B6/cs not_active IP Right Cessation
- 1998-03-05 JP JP53837298A patent/JP3852956B2/ja not_active Expired - Fee Related
- 1998-03-05 EP EP98905775A patent/EP0909515B1/en not_active Expired - Lifetime
- 1998-03-05 CN CNB988002264A patent/CN1186947C/zh not_active Expired - Fee Related
- 1998-03-05 WO PCT/JP1998/000911 patent/WO1998039925A1/en active IP Right Grant
- 1998-03-05 DE DE69806214T patent/DE69806214T2/de not_active Expired - Lifetime
- 1998-03-05 KR KR10-1998-0708967A patent/KR100404491B1/ko not_active IP Right Cessation
- 1998-03-05 US US09/035,695 patent/US6215529B1/en not_active Expired - Fee Related
- 1998-03-06 MY MYPI98000982A patent/MY120447A/en unknown
Also Published As
Publication number | Publication date |
---|---|
JP2000513903A (ja) | 2000-10-17 |
BR9804773B1 (pt) | 2010-12-14 |
CN1217854A (zh) | 1999-05-26 |
BR9804773A (pt) | 1999-08-17 |
EP0909515B1 (en) | 2002-06-26 |
DE69806214D1 (de) | 2002-08-01 |
DE69806214T2 (de) | 2002-10-31 |
WO1998039925A1 (en) | 1998-09-11 |
KR20000065212A (ko) | 2000-11-06 |
JP3852956B2 (ja) | 2006-12-06 |
CZ295874B6 (cs) | 2005-11-16 |
EP0909515A1 (en) | 1999-04-21 |
KR100404491B1 (ko) | 2003-12-18 |
MY120447A (en) | 2005-10-31 |
US6215529B1 (en) | 2001-04-10 |
CN1186947C (zh) | 2005-01-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PD00 | Pending as of 2000-06-30 in czech republic | ||
MM4A | Patent lapsed due to non-payment of fee |
Effective date: 20110305 |