JPH0342830B2 - - Google Patents
Info
- Publication number
- JPH0342830B2 JPH0342830B2 JP59176517A JP17651784A JPH0342830B2 JP H0342830 B2 JPH0342830 B2 JP H0342830B2 JP 59176517 A JP59176517 A JP 59176517A JP 17651784 A JP17651784 A JP 17651784A JP H0342830 B2 JPH0342830 B2 JP H0342830B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- control
- video signal
- transistor
- circuit
- 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
- 230000009467 reduction Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims 1
- 230000000670 limiting effect Effects 0.000 description 11
- 230000007423 decrease Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/29—Picture reproducers using cathode ray tubes using demagnetisation or compensation of external magnetic fields
-
- 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
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US525682 | 1983-08-23 | ||
| US06/525,682 US4536796A (en) | 1983-08-23 | 1983-08-23 | Non-linear dynamic coring circuit for video signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6069965A JPS6069965A (ja) | 1985-04-20 |
| JPH0342830B2 true JPH0342830B2 (en, 2012) | 1991-06-28 |
Family
ID=24094219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59176517A Granted JPS6069965A (ja) | 1983-08-23 | 1984-08-23 | ダイナミツク信号心抜き回路 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4536796A (en, 2012) |
| JP (1) | JPS6069965A (en, 2012) |
| KR (1) | KR920009077B1 (en, 2012) |
| AT (1) | AT389409B (en, 2012) |
| CA (1) | CA1216665A (en, 2012) |
| DE (1) | DE3430933A1 (en, 2012) |
| FR (1) | FR2551289B1 (en, 2012) |
| GB (1) | GB2145601B (en, 2012) |
| HK (1) | HK25193A (en, 2012) |
| IT (1) | IT1175608B (en, 2012) |
Families Citing this family (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3808737A1 (de) * | 1987-06-24 | 1989-01-05 | Philips Patentverwaltung | Verfahren und schaltungsanordnung zum vermindern von stoerungen |
| JP2543567B2 (ja) * | 1988-04-07 | 1996-10-16 | 株式会社日立製作所 | ダイナミックノイズリダクション回路及びこれを用いたテレビジョン受信機 |
| KR910006373B1 (ko) * | 1988-06-11 | 1991-08-21 | 삼성전자 주식회사 | 잡음 제거 레벨 자동 조정 회로 |
| KR920010938B1 (ko) * | 1990-05-21 | 1992-12-24 | 삼성전자 주식회사 | 화면 밝기에 따른 수직 윤곽조정 회로 |
| US5031042A (en) * | 1990-07-09 | 1991-07-09 | Zenith Electronics Corporation | Noise coring and peaking circuit |
| US5134482A (en) * | 1990-11-26 | 1992-07-28 | North American Philips Corporation | Adjustable video sharpness circuit |
| GB2250886B (en) * | 1990-12-13 | 1995-06-14 | Rank Cintel Ltd | Noise reduction in video signals |
| UA27117C2 (uk) * | 1993-01-15 | 2000-02-28 | Олександр Олександрович Антонов | Пристрій регеhерації відеосигhалів для кольорового телебачеhhя |
| DE4318057C1 (de) * | 1993-05-29 | 1994-07-07 | Mb Video Gmbh | Schaltungsanordnung zur Verbesserung der Qualität von Videosignalen |
| US5446503A (en) * | 1994-04-11 | 1995-08-29 | Mitsubishi Semiconductor America, Inc. | Vertical detail enhancement with stepped return coring |
| FR2729524B1 (fr) * | 1995-01-13 | 1997-06-06 | Sgs Thomson Microelectronics | Circuit de suppression et circuit d'accentuation |
| FR2729525B1 (fr) * | 1995-01-13 | 1997-06-06 | Sgs Thomson Microelectronics | Circuit de reglage du seuil de suppression d'un signal |
| DE69611113T3 (de) * | 1995-03-06 | 2007-03-15 | Matsushita Electric Industrial Co., Ltd., Kadoma | Vorrichtung zur Videorauschreduktion |
| KR100230391B1 (ko) * | 1996-11-29 | 1999-11-15 | 윤종용 | 휘도신호의 윤곽성분을 적응적으로 보정하는방법 및 회로 |
| US7440633B2 (en) * | 2003-12-19 | 2008-10-21 | Sharp Laboratories Of America, Inc. | Enhancing the quality of decoded quantized images |
| US7424168B2 (en) * | 2003-12-24 | 2008-09-09 | Sharp Laboratories Of America, Inc. | Enhancing the quality of decoded quantized images |
| US7424166B2 (en) * | 2003-12-24 | 2008-09-09 | Sharp Laboratories Of America, Inc. | Enhancing the quality of decoded quantized images |
| US7400779B2 (en) * | 2004-01-08 | 2008-07-15 | Sharp Laboratories Of America, Inc. | Enhancing the quality of decoded quantized images |
| US8120570B2 (en) * | 2004-12-02 | 2012-02-21 | Sharp Laboratories Of America, Inc. | Systems and methods for tone curve generation, selection and application |
| US7768496B2 (en) * | 2004-12-02 | 2010-08-03 | Sharp Laboratories Of America, Inc. | Methods and systems for image tonescale adjustment to compensate for a reduced source light power level |
| US8913089B2 (en) | 2005-06-15 | 2014-12-16 | Sharp Laboratories Of America, Inc. | Methods and systems for enhancing display characteristics with frequency-specific gain |
| US9083969B2 (en) * | 2005-08-12 | 2015-07-14 | Sharp Laboratories Of America, Inc. | Methods and systems for independent view adjustment in multiple-view displays |
| US8111265B2 (en) * | 2004-12-02 | 2012-02-07 | Sharp Laboratories Of America, Inc. | Systems and methods for brightness preservation using a smoothed gain image |
| US7982707B2 (en) * | 2004-12-02 | 2011-07-19 | Sharp Laboratories Of America, Inc. | Methods and systems for generating and applying image tone scale adjustments |
| US7800577B2 (en) * | 2004-12-02 | 2010-09-21 | Sharp Laboratories Of America, Inc. | Methods and systems for enhancing display characteristics |
| US8922594B2 (en) * | 2005-06-15 | 2014-12-30 | Sharp Laboratories Of America, Inc. | Methods and systems for enhancing display characteristics with high frequency contrast enhancement |
| US8947465B2 (en) | 2004-12-02 | 2015-02-03 | Sharp Laboratories Of America, Inc. | Methods and systems for display-mode-dependent brightness preservation |
| US7961199B2 (en) * | 2004-12-02 | 2011-06-14 | Sharp Laboratories Of America, Inc. | Methods and systems for image-specific tone scale adjustment and light-source control |
| US7782405B2 (en) * | 2004-12-02 | 2010-08-24 | Sharp Laboratories Of America, Inc. | Systems and methods for selecting a display source light illumination level |
| US7515160B2 (en) * | 2006-07-28 | 2009-04-07 | Sharp Laboratories Of America, Inc. | Systems and methods for color preservation with image tone scale corrections |
| US8004511B2 (en) | 2004-12-02 | 2011-08-23 | Sharp Laboratories Of America, Inc. | Systems and methods for distortion-related source light management |
| US7924261B2 (en) * | 2004-12-02 | 2011-04-12 | Sharp Laboratories Of America, Inc. | Methods and systems for determining a display light source adjustment |
| US7839406B2 (en) * | 2006-03-08 | 2010-11-23 | Sharp Laboratories Of America, Inc. | Methods and systems for enhancing display characteristics with ambient illumination input |
| US7826681B2 (en) * | 2007-02-28 | 2010-11-02 | Sharp Laboratories Of America, Inc. | Methods and systems for surround-specific display modeling |
| US8416179B2 (en) | 2008-07-10 | 2013-04-09 | Sharp Laboratories Of America, Inc. | Methods and systems for color preservation with a color-modulated backlight |
| US9330630B2 (en) | 2008-08-30 | 2016-05-03 | Sharp Laboratories Of America, Inc. | Methods and systems for display source light management with rate change control |
| US8165724B2 (en) | 2009-06-17 | 2012-04-24 | Sharp Laboratories Of America, Inc. | Methods and systems for power-controlling display devices |
| US20110074803A1 (en) * | 2009-09-29 | 2011-03-31 | Louis Joseph Kerofsky | Methods and Systems for Ambient-Illumination-Selective Display Backlight Modification and Image Enhancement |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2229674C3 (de) * | 1972-06-19 | 1979-02-15 | Robert Bosch Gmbh, 7000 Stuttgart | Schaltungsanordnung zur Kontrasterhöhung |
| US3984865A (en) * | 1975-03-26 | 1976-10-05 | Rca Corporation | Transient suppression in television video systems |
| US4167749A (en) * | 1977-05-26 | 1979-09-11 | Rca Corporation | Noise reduction apparatus |
| US4399460A (en) * | 1981-10-09 | 1983-08-16 | Rca Corporation | Video signal peaking control system with provision for automatic and manual control |
| US4441121A (en) * | 1982-03-31 | 1984-04-03 | Rca Corporation | Adjustable coring circuit |
| GB2118396B (en) * | 1982-03-31 | 1985-09-25 | Rca Corp | Video signal peaking system |
| US4437123A (en) * | 1982-04-30 | 1984-03-13 | Rca Corporation | Dynamically controlled horizontal peaking system |
| US4437124A (en) * | 1982-04-30 | 1984-03-13 | Rca Corporation | Dynamic coring circuit |
-
1983
- 1983-08-23 US US06/525,682 patent/US4536796A/en not_active Expired - Lifetime
-
1984
- 1984-08-15 GB GB08420739A patent/GB2145601B/en not_active Expired
- 1984-08-17 IT IT22351/84A patent/IT1175608B/it active
- 1984-08-22 KR KR1019840005082A patent/KR920009077B1/ko not_active Expired
- 1984-08-22 DE DE19843430933 patent/DE3430933A1/de active Granted
- 1984-08-22 FR FR848413098A patent/FR2551289B1/fr not_active Expired - Lifetime
- 1984-08-22 CA CA000461559A patent/CA1216665A/en not_active Expired
- 1984-08-23 JP JP59176517A patent/JPS6069965A/ja active Granted
- 1984-08-23 AT AT0270384A patent/AT389409B/de not_active IP Right Cessation
-
1993
- 1993-03-18 HK HK251/93A patent/HK25193A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2145601B (en) | 1987-06-17 |
| HK25193A (en) | 1993-03-26 |
| IT1175608B (it) | 1987-07-15 |
| IT8422351A0 (it) | 1984-08-17 |
| GB2145601A (en) | 1985-03-27 |
| FR2551289B1 (fr) | 1990-10-05 |
| GB8420739D0 (en) | 1984-09-19 |
| FR2551289A1 (fr) | 1985-03-01 |
| JPS6069965A (ja) | 1985-04-20 |
| DE3430933A1 (de) | 1985-03-14 |
| KR850002198A (ko) | 1985-05-06 |
| AT389409B (de) | 1989-12-11 |
| ATA270384A (de) | 1989-04-15 |
| KR920009077B1 (ko) | 1992-10-13 |
| US4536796A (en) | 1985-08-20 |
| DE3430933C2 (en, 2012) | 1987-09-10 |
| CA1216665A (en) | 1987-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0342830B2 (en, 2012) | ||
| US4009334A (en) | Video noise reduction circuit | |
| JPS60158790A (ja) | ビーム電流制限装置 | |
| CA1197609A (en) | Dynamic coring circuit | |
| US4437123A (en) | Dynamically controlled horizontal peaking system | |
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| JPS5873289A (ja) | 映像信号の高周波ピーキング成分を自動および手動で制御する装置 | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |