DE3669250D1 - Videosignalpegelsteuerung. - Google Patents
Videosignalpegelsteuerung.Info
- Publication number
- DE3669250D1 DE3669250D1 DE8686307828T DE3669250T DE3669250D1 DE 3669250 D1 DE3669250 D1 DE 3669250D1 DE 8686307828 T DE8686307828 T DE 8686307828T DE 3669250 T DE3669250 T DE 3669250T DE 3669250 D1 DE3669250 D1 DE 3669250D1
- Authority
- DE
- Germany
- Prior art keywords
- digital
- converter
- video signal
- signal level
- level control
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
- H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
- H03M1/183—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter
- H03M1/185—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter the determination of the range being based on more than one digital output value, e.g. on a running average, a power estimation or the rate of change
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Analogue/Digital Conversion (AREA)
- Details Of Television Scanning (AREA)
- Television Receiver Circuits (AREA)
- Processing Of Color Television Signals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB858524880A GB8524880D0 (en) | 1985-10-09 | 1985-10-09 | Video level control |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3669250D1 true DE3669250D1 (de) | 1990-04-05 |
Family
ID=10586402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686307828T Expired - Lifetime DE3669250D1 (de) | 1985-10-09 | 1986-10-09 | Videosignalpegelsteuerung. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4860103A (de) |
EP (1) | EP0222508B1 (de) |
AT (1) | ATE50676T1 (de) |
DE (1) | DE3669250D1 (de) |
ES (1) | ES2014236B3 (de) |
GB (1) | GB8524880D0 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5457494A (en) * | 1988-11-21 | 1995-10-10 | Canon Kabushiki Kaisha | Image pickup signal processing apparatus |
DE69329837T2 (de) * | 1992-04-30 | 2001-04-19 | Hewlett Packard Co | Differenztieller integrierender Verstärker mit geschalteten Kapazitäten zur Bildung von Prezisionswiderständen |
US5581297A (en) * | 1992-07-24 | 1996-12-03 | Intelligent Instruments Corporation | Low power video security monitoring system |
FI96077C (fi) * | 1992-11-23 | 1996-04-25 | Salon Televisiotehdas Oy | Kytkentäjärjestely digitaalisen audiosignaaliprosessorin virtuaalisen dynamiikka-alueen laajentamiseksi |
DE69316569T2 (de) * | 1992-12-23 | 1998-08-20 | Eastman Kodak Co | Automatischer Abgleich der Kanalverstärkung und -abweichung für Videokameras mit Multikanalsensoren |
US6035013A (en) * | 1994-06-01 | 2000-03-07 | Simage O.Y. | Radiographic imaging devices, systems and methods |
GB2289983B (en) * | 1994-06-01 | 1996-10-16 | Simage Oy | Imaging devices,systems and methods |
US6188830B1 (en) | 1997-07-14 | 2001-02-13 | Sony Corporation | Audiovisual effects processing method and apparatus for instantaneous storage-based playback of audio data in synchronization with video data |
DE19804922A1 (de) * | 1998-02-07 | 1999-08-12 | Grundig Ag | Verfahren und Vorrichtung zur Regelung der Verstärkung in einem Signalverarbeitungssystem |
US6816200B1 (en) * | 1998-08-31 | 2004-11-09 | Neostar, Inc. | Method and apparatus for detecting camera sensor intensity saturation |
US7075590B1 (en) * | 1998-09-30 | 2006-07-11 | Thomson Licensing | Apparatus for providing television receiver alignment functions |
US6788340B1 (en) | 1999-03-15 | 2004-09-07 | Texas Instruments Incorporated | Digital imaging control with selective intensity resolution enhancement |
EP1067775A3 (de) * | 1999-03-15 | 2002-08-07 | Texas Instruments Incorporated | Digitale Bildaufnahmesteuerung mit selektiver Erhöhung des Dynamikbereichs |
US6559837B1 (en) | 2000-09-25 | 2003-05-06 | Infocus Corporation | Image luminance detection and correction employing histograms |
US7570305B2 (en) * | 2004-03-26 | 2009-08-04 | Euresys S.A. | Sampling of video data and analyses of the sampled data to determine video properties |
KR100688977B1 (ko) * | 2004-09-13 | 2007-03-08 | 삼성전자주식회사 | 디스플레이 장치 |
EP1821275A1 (de) * | 2006-02-20 | 2007-08-22 | Deutsche Thomson-Brandt Gmbh | Verfahren und Vorrichtung zur Ansteuerung einer Plasmaanzeigetafel mit Dämpfungsschätzung und Kompensierung. |
TWI332757B (en) * | 2006-06-14 | 2010-11-01 | Realtek Semiconductor Corp | Circuit and method for reducing mismatch between signal converters |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4403253A (en) * | 1981-12-28 | 1983-09-06 | General Electric Company | Uniform distribution video processor with controlled reference voltages |
US4517586A (en) * | 1982-11-23 | 1985-05-14 | Rca Corporation | Digital television receiver with analog-to-digital converter having time multiplexed gain |
US4642694A (en) * | 1984-05-22 | 1987-02-10 | Casio Computer Co., Ltd. | Television video signal A/D converter |
JPS616994A (ja) * | 1984-06-21 | 1986-01-13 | Casio Comput Co Ltd | カラ−映像信号a/d変換装置 |
US4625240A (en) * | 1984-07-25 | 1986-11-25 | Eeco, Inc. | Adaptive automatic gain control |
JPS6139625A (ja) * | 1984-07-28 | 1986-02-25 | Victor Co Of Japan Ltd | アナログ/デイジタル変換装置 |
US4628362A (en) * | 1985-05-02 | 1986-12-09 | American Dynamics Corporation | Combined video AGC and digitizing circuit |
JPS6281815A (ja) * | 1985-10-04 | 1987-04-15 | Toshiba Corp | A/d変換回路 |
-
1985
- 1985-10-09 GB GB858524880A patent/GB8524880D0/en active Pending
-
1986
- 1986-10-09 ES ES86307828T patent/ES2014236B3/es not_active Expired - Lifetime
- 1986-10-09 EP EP86307828A patent/EP0222508B1/de not_active Expired - Lifetime
- 1986-10-09 AT AT86307828T patent/ATE50676T1/de not_active IP Right Cessation
- 1986-10-09 DE DE8686307828T patent/DE3669250D1/de not_active Expired - Lifetime
-
1988
- 1988-11-22 US US07/275,658 patent/US4860103A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0222508B1 (de) | 1990-02-28 |
GB8524880D0 (en) | 1985-11-13 |
ES2014236B3 (es) | 1990-07-01 |
EP0222508A1 (de) | 1987-05-20 |
US4860103A (en) | 1989-08-22 |
ATE50676T1 (de) | 1990-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: GENERAL ELECTRIC CO., PRINCETON, N.J., US |