DE69315481T2 - Vorrichtung und Verfahren zur Verstärkungsbegrenzung in einem digitalen Gammakorrektor - Google Patents
Vorrichtung und Verfahren zur Verstärkungsbegrenzung in einem digitalen GammakorrektorInfo
- Publication number
- DE69315481T2 DE69315481T2 DE69315481T DE69315481T DE69315481T2 DE 69315481 T2 DE69315481 T2 DE 69315481T2 DE 69315481 T DE69315481 T DE 69315481T DE 69315481 T DE69315481 T DE 69315481T DE 69315481 T2 DE69315481 T2 DE 69315481T2
- Authority
- DE
- Germany
- Prior art keywords
- gain
- limiting
- digital gamma
- gamma corrector
- corrector
- 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 - Fee Related
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
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/901,372 US5255093A (en) | 1992-06-19 | 1992-06-19 | Apparatus and a method for limiting gain in a digital gamma corrector |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69315481D1 DE69315481D1 (de) | 1998-01-15 |
DE69315481T2 true DE69315481T2 (de) | 1998-04-02 |
Family
ID=25414046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69315481T Expired - Fee Related DE69315481T2 (de) | 1992-06-19 | 1993-06-18 | Vorrichtung und Verfahren zur Verstärkungsbegrenzung in einem digitalen Gammakorrektor |
Country Status (4)
Country | Link |
---|---|
US (1) | US5255093A (de) |
EP (1) | EP0574943B1 (de) |
JP (1) | JP3293951B2 (de) |
DE (1) | DE69315481T2 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3359078B2 (ja) * | 1993-03-05 | 2002-12-24 | キヤノン株式会社 | 撮像装置 |
US6674562B1 (en) * | 1994-05-05 | 2004-01-06 | Iridigm Display Corporation | Interferometric modulation of radiation |
JPH06339148A (ja) * | 1993-03-29 | 1994-12-06 | Hitachi Ltd | 色補正器、それを用いた画像表示装置、及び該画像表示装置から成る白バランス調整システム、並びに、白バランス調整方法、及び色調整方法 |
JP3487361B2 (ja) * | 1994-04-11 | 2004-01-19 | 富士写真フイルム株式会社 | フイルムスキャナの露出制御装置並びに画像信号処理方法及びガンマ補正方法 |
JP3156503B2 (ja) * | 1994-05-27 | 2001-04-16 | 松下電器産業株式会社 | 固体撮像装置の駆動方法及び固体撮像装置の信号処理回路 |
US6243133B1 (en) * | 1997-03-07 | 2001-06-05 | Eastman Kodak Company | Method for automatic scene balance of digital images |
KR100703140B1 (ko) | 1998-04-08 | 2007-04-05 | 이리다임 디스플레이 코포레이션 | 간섭 변조기 및 그 제조 방법 |
US8928967B2 (en) | 1998-04-08 | 2015-01-06 | Qualcomm Mems Technologies, Inc. | Method and device for modulating light |
WO2003007049A1 (en) * | 1999-10-05 | 2003-01-23 | Iridigm Display Corporation | Photonic mems and structures |
US20030160901A1 (en) * | 2002-02-28 | 2003-08-28 | Topper Robert Joseph | Inverse gamma correction circuit using piecewise-linear approximation |
KR100590529B1 (ko) * | 2003-11-04 | 2006-06-15 | 삼성전자주식회사 | 영상의 국부적 휘도 향상 방법 및 장치와 컴퓨터프로그램을 저장하는 컴퓨터로 읽을 수 있는 기록 매체 |
US7574335B1 (en) | 2004-02-11 | 2009-08-11 | Adobe Systems Incorporated | Modelling piece-wise continuous transfer functions for digital image processing |
JP2005260405A (ja) * | 2004-03-10 | 2005-09-22 | Matsushita Electric Ind Co Ltd | 画像処理装置および画像処理方法 |
US7310179B2 (en) * | 2004-09-27 | 2007-12-18 | Idc, Llc | Method and device for selective adjustment of hysteresis window |
AU2005289445A1 (en) * | 2004-09-27 | 2006-04-06 | Idc, Llc | Method and device for multistate interferometric light modulation |
US7916980B2 (en) | 2006-01-13 | 2011-03-29 | Qualcomm Mems Technologies, Inc. | Interconnect structure for MEMS device |
KR100809347B1 (ko) * | 2006-07-31 | 2008-03-05 | 삼성전자주식회사 | 쉐도우 영역 보상 방법 및 장치 |
US7957589B2 (en) * | 2007-01-25 | 2011-06-07 | Qualcomm Mems Technologies, Inc. | Arbitrary power function using logarithm lookup table |
US7782522B2 (en) | 2008-07-17 | 2010-08-24 | Qualcomm Mems Technologies, Inc. | Encapsulation methods for interferometric modulator and MEMS devices |
US8795179B2 (en) * | 2011-04-12 | 2014-08-05 | Shenzhen Mindray Bio-Medical Electronics Co., Ltd. | Methods, modules, and systems for gain control in B-mode ultrasonic imaging |
CN115953982A (zh) * | 2023-03-03 | 2023-04-11 | 北京数字光芯集成电路设计有限公司 | 一种微显示芯片的伽玛校正方法及电路 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4394688A (en) * | 1981-08-25 | 1983-07-19 | Hamamatsu Systems, Inc. | Video system having an adjustable digital gamma correction for contrast enhancement |
JPS58150376A (ja) * | 1982-03-02 | 1983-09-07 | Sony Corp | ビデオ信号処理装置 |
US4805013A (en) * | 1984-09-05 | 1989-02-14 | Canon Kabushiki Kaisha | Image data conversion system |
GB8521019D0 (en) * | 1985-08-22 | 1986-10-01 | Rank Pullin Controls Ltd | Imaging apparatus |
US5132796A (en) * | 1990-09-04 | 1992-07-21 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for digitally processing gamma pedestal and gain |
-
1992
- 1992-06-19 US US07/901,372 patent/US5255093A/en not_active Expired - Lifetime
-
1993
- 1993-06-16 JP JP14502493A patent/JP3293951B2/ja not_active Expired - Fee Related
- 1993-06-18 EP EP93109780A patent/EP0574943B1/de not_active Expired - Lifetime
- 1993-06-18 DE DE69315481T patent/DE69315481T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0574943A2 (de) | 1993-12-22 |
EP0574943A3 (en) | 1994-06-01 |
JP3293951B2 (ja) | 2002-06-17 |
DE69315481D1 (de) | 1998-01-15 |
US5255093A (en) | 1993-10-19 |
JPH06237399A (ja) | 1994-08-23 |
EP0574943B1 (de) | 1997-12-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |