KR930022893A - 칼러 비디오 카메라 장치 - Google Patents
칼러 비디오 카메라 장치 Download PDFInfo
- Publication number
- KR930022893A KR930022893A KR1019930005523A KR930005523A KR930022893A KR 930022893 A KR930022893 A KR 930022893A KR 1019930005523 A KR1019930005523 A KR 1019930005523A KR 930005523 A KR930005523 A KR 930005523A KR 930022893 A KR930022893 A KR 930022893A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- digital
- calibration
- circuit
- level
- 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
- H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/18—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
- H04N5/185—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
-
- 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
- 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
- H04N23/87—Camera processing pipelines; Components thereof for processing colour signals for reinsertion of DC or slowly varying components of colour signals
-
- 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
- H04N9/72—Circuits for processing colour signals for reinsertion of DC and slowly varying components of colour signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Image Signal Generators (AREA)
- Picture Signal Circuits (AREA)
Abstract
Description
Claims (5)
- 입사광에 응답하여 영상 신호를 발생시키는 영상 픽업 디바이스, 제1아나로그 교정 신호를 상기 영상 신호에 가산하고, 영상 신호의 블랙 레벨을 제어하는 아나로그 신호 처리 회로, 상기 아나로그 신호 처리 회로로 부터의 처리된 영상신호 출력을 디지탈 신호로 형성된 디지탈 영상 신호로 변환시키는 A/D변환 회로, 상기 디지탈 영상 신호의 블랙 레벨을 검출하는 레벨 검출 회로, 상기 제1아나로그 교정 신호에 다른 제1디지탈 교정 신호를 발생시키는 제1교정 신호 발생 회로, 상기 디지탈 영상 신호의 블랙 레벨을 교정하는 디지탈 신호로 형성된 제2디지탈 교정 신호를 발생시키는 제2교정 신호 발생회로 및, 상기 제2디지탈 교정 신호를 상기 디지탈 영상 신호에 가산하는 가산 회로, 상기 디지탈 신호 처리 회로 및 상기 아나로그 신호 처리 회로 사이에 접속되어, 상기 제1디지탈 교정 신호를 아나로그 신호로 형성된 제1아나로그 교정신호로 변환시키는 D/A변환 회로와, 상기 제1디지탈 교정 신호의 교정 레벨을 제어함으로써 상기 아나로그 신호 회로로 부터의 상기 처리된 영상 신호 출력의 블랙 레벨을 대충 조정하여, 상기 레벨 검출 회로에 의해 검출된 디지탈 영상 신호의 블랙 레벨에 따라 상기 제2디지탈 교정 신호의 교정 레벨을 제어함으로써 상기 디지탈 영상 신호의 블랙 레벨을 미세하게 조정하는 제어수단을 구비하는 칼러 비디오 카메라 장치.
- 제1항에 있어서, 상기 제1교정 신호 발생회로는 블랙 음영 교정 회로인 칼러 비디오 카메라 장치.
- 제1항에 있어서, 상기 제2교정 신호 발생회로는 페데스탈 레벨 교정회로인 칼러 비디오 카메라 장치.
- 제1항에 있어서, 상기 제2교정 신호 발생회로는 플레이어(flare)교정 회로인 칼러 비디오 카메라 장치.
- 제1항에 있어서, 상기 레벨 검출 회로는 필드 유니트 내에서 상기 디지탈 신호의 블랙 레벨을 검출하고, 상기 제어 수단은 필드 유니트내에서 상기 제1 및 제2교정 신호의 레벨을 제어하는 칼러 비디오 카메라 장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP92-110696 | 1992-04-02 | ||
JP11069692A JP3252979B2 (ja) | 1992-04-02 | 1992-04-02 | 撮像装置 |
JP11686492A JP3263789B2 (ja) | 1992-04-08 | 1992-04-08 | 撮像装置 |
JP92-116864 | 1992-04-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930022893A true KR930022893A (ko) | 1993-11-24 |
KR100265306B1 KR100265306B1 (ko) | 2000-09-15 |
Family
ID=26450265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930005523A KR100265306B1 (ko) | 1992-04-02 | 1993-03-31 | 칼러 비디오 카메라 장치 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5410365A (ko) |
EP (1) | EP0564305B1 (ko) |
KR (1) | KR100265306B1 (ko) |
DE (1) | DE69319164T2 (ko) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6614475B1 (en) * | 1997-05-13 | 2003-09-02 | Sony Corporation | Correction apparatus and method for imaging signals and video camera |
EP0926887A3 (en) * | 1997-12-22 | 2001-03-21 | Texas Instruments Inc. | Automatic gain and offset control of a video decoder analog front end |
US6518998B1 (en) * | 1998-06-09 | 2003-02-11 | Integra Medical | Image quality by automatically changing the black level of a video signal |
US6359662B1 (en) * | 1999-11-05 | 2002-03-19 | Agilent Technologies, Inc. | Method and system for compensating for defects in a multi-light valve display system |
US7064785B2 (en) * | 2002-02-07 | 2006-06-20 | Eastman Kodak Company | Apparatus and method of correcting for dark current in a solid state image sensor |
US7084911B1 (en) * | 2002-11-08 | 2006-08-01 | Eastman Kodak Company | Black level calibration method for imager with hysteresis comparison and adaptive step size |
JP4333290B2 (ja) * | 2003-09-04 | 2009-09-16 | 株式会社ニコン | 黒レベル補正装置、及び電子カメラ |
JP4345004B2 (ja) * | 2004-04-23 | 2009-10-14 | ソニー株式会社 | 光学的黒レベル調整回路 |
JP4487751B2 (ja) * | 2004-12-06 | 2010-06-23 | 船井電機株式会社 | テレビジョンおよびテレビジョンの調整方法 |
TWI387934B (zh) * | 2009-12-31 | 2013-03-01 | Ind Tech Res Inst | 多視角影像之建構方法及系統 |
US20110216065A1 (en) * | 2009-12-31 | 2011-09-08 | Industrial Technology Research Institute | Method and System for Rendering Multi-View Image |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2159473B2 (de) * | 1971-12-01 | 1976-10-14 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren und schaltungsanordnung zur streulichtkompensation |
EP0074081B1 (en) * | 1981-09-01 | 1986-12-03 | Nec Corporation | Signal processing unit |
US4481535A (en) * | 1982-08-09 | 1984-11-06 | Xedar Corporation | Signal processing system for chopper type pyroelectric camera |
US4599640A (en) * | 1984-02-29 | 1986-07-08 | Rca Corporation | Television camera with multiplexed A-D converter |
FR2570236B1 (fr) * | 1984-09-07 | 1986-11-21 | Thomson Csf | Dispositif de correction des defauts d'uniformite induits dans les signaux issus d'une camera de television par les variations de vitesse d'analyse |
JPH0346632Y2 (ko) * | 1985-03-30 | 1991-10-02 | ||
NL8501635A (nl) * | 1985-06-06 | 1987-01-02 | Philips Nv | Kamera voor televisie-, foto- respektievelijk filmopname. |
US4694334A (en) * | 1985-12-24 | 1987-09-15 | Xedar Corporation | Pyroelectric camera signal processing having pedestal signal level compensation |
JPH0797830B2 (ja) * | 1986-04-08 | 1995-10-18 | ソニー株式会社 | ビデオカメラの黒レベル補正回路 |
JPH074002B2 (ja) * | 1986-08-20 | 1995-01-18 | 松下電器産業株式会社 | テレビジヨン信号クランプ装置 |
JPS6437174U (ko) * | 1987-08-28 | 1989-03-06 | ||
ES2069557T3 (es) * | 1988-08-31 | 1995-05-16 | Canon Kk | Aparato lector de imagenes en colores. |
JPH02119381A (ja) * | 1988-10-28 | 1990-05-07 | Toshiba Corp | 黒レベル補正回路 |
EP0396746B1 (en) * | 1988-11-17 | 1995-04-05 | Matsushita Electric Industrial Co., Ltd. | Picture receiver controller |
GB2228643B (en) * | 1989-02-28 | 1993-05-19 | Sony Corp | Video signal clamping |
GB2230915B (en) * | 1989-04-21 | 1993-09-15 | Sony Corp | Digital colour correction |
JPH03128576A (ja) * | 1989-07-07 | 1991-05-31 | Konica Corp | 画像読取装置 |
JP2519804B2 (ja) * | 1989-09-07 | 1996-07-31 | 株式会社東芝 | 映像信号遅延回路 |
JP3033587B2 (ja) * | 1989-11-10 | 2000-04-17 | ソニー株式会社 | 自動画質調整装置 |
JPH0771290B2 (ja) * | 1989-12-27 | 1995-07-31 | 富士写真光機株式会社 | 信号処理回路 |
KR930006900B1 (ko) * | 1989-12-31 | 1993-07-24 | 삼성전자 주식회사 | 자동화이트밸런스 및 자동블랙밸런스 공용회로 및 방법 |
US5105276A (en) * | 1990-11-15 | 1992-04-14 | Eastman Kodak Company | DC restoration of sampled imagery signals |
-
1993
- 1993-03-30 US US08/040,286 patent/US5410365A/en not_active Expired - Lifetime
- 1993-03-31 KR KR1019930005523A patent/KR100265306B1/ko not_active IP Right Cessation
- 1993-04-02 DE DE69319164T patent/DE69319164T2/de not_active Expired - Lifetime
- 1993-04-02 EP EP93302627A patent/EP0564305B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR100265306B1 (ko) | 2000-09-15 |
DE69319164T2 (de) | 1998-10-15 |
EP0564305A3 (en) | 1993-11-03 |
EP0564305B1 (en) | 1998-06-17 |
DE69319164D1 (de) | 1998-07-23 |
US5410365A (en) | 1995-04-25 |
EP0564305A2 (en) | 1993-10-06 |
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