CA1089981A - Clamping circuit for color television signals - Google Patents
Clamping circuit for color television signalsInfo
- Publication number
- CA1089981A CA1089981A CA305,853A CA305853A CA1089981A CA 1089981 A CA1089981 A CA 1089981A CA 305853 A CA305853 A CA 305853A CA 1089981 A CA1089981 A CA 1089981A
- Authority
- CA
- Canada
- Prior art keywords
- signal
- color
- color difference
- signals
- pedestal level
- 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
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 128
- 239000011159 matrix material Substances 0.000 claims abstract description 30
- 238000005070 sampling Methods 0.000 claims description 33
- 230000008859 change Effects 0.000 claims description 15
- 230000000737 periodic effect Effects 0.000 claims 1
- 235000019557 luminance Nutrition 0.000 description 33
- 239000003990 capacitor Substances 0.000 description 31
- 239000000306 component Substances 0.000 description 21
- 239000002131 composite material Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 101150087426 Gnal gene Proteins 0.000 description 4
- 239000002674 ointment Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 101000843385 Paenibacillus lautus Endoglucanase B Proteins 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000035571 calor Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 241000331231 Amorphocerini gen. n. 1 DAD-2008 Species 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 241001600451 Chromis Species 0.000 description 1
- 241000272470 Circus Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004065 semiconductor Substances 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
- H04N9/64—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)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP77497/77 | 1977-06-29 | ||
| JP7749777A JPS5412520A (en) | 1977-06-29 | 1977-06-29 | Color television picture receiver |
| JP78136/77 | 1977-06-30 | ||
| JP7813677A JPS5412629A (en) | 1977-06-30 | 1977-06-30 | Chrominance signal clamp/matrix circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1089981A true CA1089981A (en) | 1980-11-18 |
Family
ID=26418567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA305,853A Expired CA1089981A (en) | 1977-06-29 | 1978-06-20 | Clamping circuit for color television signals |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4183050A (en, 2012) |
| CA (1) | CA1089981A (en, 2012) |
| DE (1) | DE2828654A1 (en, 2012) |
| FR (1) | FR2396482A1 (en, 2012) |
| GB (1) | GB2000657B (en, 2012) |
| NL (1) | NL191046C (en, 2012) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2105547A (en) * | 1981-09-11 | 1983-03-23 | Philips Electronic Associated | Clamping video signals |
| JPS58100590A (ja) * | 1981-12-11 | 1983-06-15 | Sony Corp | サンプリング出力の合成方法 |
| JPS58135121U (ja) * | 1982-03-05 | 1983-09-10 | パイオニア株式会社 | レベルシフト回路 |
| DE3323750A1 (de) * | 1983-07-01 | 1985-01-17 | Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover | Klemmschaltung fuer ein signal ohne ausreichende austastluecken, insbesondere fuer ein videosignal |
| US4549203A (en) * | 1983-12-14 | 1985-10-22 | Rca Corporation | DC Stabilization system |
| US4554588A (en) * | 1983-12-14 | 1985-11-19 | Rca Corporation | Control system for luminance/chrominance signal processing circuits |
| US4554577A (en) * | 1983-12-14 | 1985-11-19 | Rca Corporation | Keyed DC stabilization system with protection from error introduction during vertical sync interval |
| JPS61140279A (ja) * | 1984-12-12 | 1986-06-27 | Toshiba Corp | 映像信号処理回路 |
| US4617590A (en) * | 1985-02-04 | 1986-10-14 | Eastman Kodak Company | Clamping circuit for video signals |
| US4802015A (en) * | 1985-08-02 | 1989-01-31 | Canon Kabushiki Kaisha | Image reproducing apparatus |
| JPS6288495A (ja) * | 1985-10-14 | 1987-04-22 | Fuji Photo Film Co Ltd | 磁気記録装置の色差線順次回路 |
| JPH02287594A (ja) * | 1989-04-28 | 1990-11-27 | Sony Corp | クリアブルー回路 |
| JP2863597B2 (ja) * | 1990-03-30 | 1999-03-03 | 株式会社東芝 | クランプ回路 |
| US5272522A (en) * | 1990-04-30 | 1993-12-21 | Thomson Consumer Electronics, Inc. | Video signal processing circuits |
| EP2700066B1 (en) | 2011-04-21 | 2019-03-06 | University of Washington through its Center for Commercialization | Myopia-safe video displays |
| WO2017127444A1 (en) | 2016-01-18 | 2017-07-27 | Waveshift Llc | Method and apparatus for reducing myopiagenic effect of electronic displays |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3575551A (en) * | 1968-05-17 | 1971-04-20 | Zenith Radio Corp | Chrominance demodulator blanking circuit |
| FR2096627B1 (en, 2012) * | 1969-12-19 | 1976-02-06 | Radiotechnique Compelec Fr | |
| NL7215775A (en, 2012) * | 1972-11-22 | 1974-05-27 | ||
| GB1536215A (en) * | 1976-07-05 | 1978-12-20 | Decca Ltd | Clamping circuits for television signals |
-
1978
- 1978-06-20 CA CA305,853A patent/CA1089981A/en not_active Expired
- 1978-06-22 GB GB7827594A patent/GB2000657B/en not_active Expired
- 1978-06-27 US US05/919,706 patent/US4183050A/en not_active Expired - Lifetime
- 1978-06-29 DE DE19782828654 patent/DE2828654A1/de active Granted
- 1978-06-29 FR FR7819535A patent/FR2396482A1/fr active Granted
- 1978-06-29 NL NL7807027A patent/NL191046C/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2828654A1 (de) | 1979-01-18 |
| US4183050A (en) | 1980-01-08 |
| NL191046C (nl) | 1994-12-16 |
| GB2000657A (en) | 1979-01-10 |
| NL7807027A (nl) | 1979-01-03 |
| GB2000657B (en) | 1982-04-28 |
| DE2828654C2 (en, 2012) | 1988-01-14 |
| FR2396482A1 (fr) | 1979-01-26 |
| FR2396482B1 (en, 2012) | 1982-12-03 |
| NL191046B (nl) | 1994-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1089981A (en) | Clamping circuit for color television signals | |
| KR100343764B1 (ko) | 색차신호 변환회로 | |
| US3673320A (en) | Television apparatus responsive to a transmitted color reference signal | |
| US3679816A (en) | Control apparatus for a color television receiver | |
| CA1239215A (en) | Television receiver having character generator with burst locked pixel clock and correction for non- standard video signals | |
| US3711636A (en) | Automatic contrast control circuit for a television receiver | |
| EP0675657A2 (en) | Multi-standard TV receiver with luma/chroma delay compensation | |
| US4207589A (en) | Hue adjustment of color television receiver | |
| US4130831A (en) | Color television control circuit for use with a VIR signal | |
| CA1296097C (en) | Motion detector for chrominance signal in tv receiver | |
| US3877066A (en) | Colour television display apparatus | |
| US4153911A (en) | Color correction circuit for a color television receiver | |
| US3780219A (en) | Signal processing circuit | |
| EP0145224B1 (en) | Stabilized color television subcarrier regenerator circuit and method | |
| CA1163360A (en) | Keying signal generator with false output immunity | |
| US3368030A (en) | Color television synchronization system | |
| CA1115411A (en) | Chroma level stabilizer | |
| US3342930A (en) | Circuit arrangement in colour television receivers | |
| US3946431A (en) | Synchronized demodulation of the chrominance signal with switched carrier phase angles | |
| US4183048A (en) | VIR-controlled hue correction circuit | |
| CA1219352A (en) | Dc stabilization system | |
| USRE32209E (en) | Television apparatus responsive to a transmitted color reference signal | |
| KR100406451B1 (ko) | 신호처리회로 | |
| US2938071A (en) | Color television matrix demodulator | |
| US4183049A (en) | Tint control signal generator for color television receiver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |