CA1065469A - Hue correction apparatus having a restricted range - Google Patents
Hue correction apparatus having a restricted rangeInfo
- Publication number
- CA1065469A CA1065469A CA252,994A CA252994A CA1065469A CA 1065469 A CA1065469 A CA 1065469A CA 252994 A CA252994 A CA 252994A CA 1065469 A CA1065469 A CA 1065469A
- Authority
- CA
- Canada
- Prior art keywords
- phase
- signal
- chrominance signals
- signals
- chrominance
- 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
- 238000012937 correction Methods 0.000 title claims abstract description 25
- 230000004044 response Effects 0.000 claims abstract description 5
- 239000003086 colorant Substances 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 230000000875 corresponding effect Effects 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 abstract description 2
- 230000001052 transient effect Effects 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 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
- H04N9/643—Hue control means, e.g. flesh tone control
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/580,681 US3996608A (en) | 1975-05-23 | 1975-05-23 | Hue correction apparatus having a restricted range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1065469A true CA1065469A (en) | 1979-10-30 |
Family
ID=24322099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA252,994A Expired CA1065469A (en) | 1975-05-23 | 1976-05-20 | Hue correction apparatus having a restricted range |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3996608A (en, 2012) |
| JP (1) | JPS51144523A (en, 2012) |
| CA (1) | CA1065469A (en, 2012) |
| MX (1) | MX3369E (en, 2012) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084178A (en) * | 1976-05-05 | 1978-04-11 | Admiral Corporation | Automatic hue control circuit |
| JPS5425025U (en, 2012) * | 1977-07-21 | 1979-02-19 | ||
| JPS5425024U (en, 2012) * | 1977-07-21 | 1979-02-19 | ||
| JPS5422717A (en) * | 1977-07-21 | 1979-02-20 | Matsushita Electric Ind Co Ltd | Hue correction device |
| US4385311A (en) * | 1981-04-01 | 1983-05-24 | Rca Corporation | Filter and phase shift circuit for a television automatic flesh color correction system |
| US4562460A (en) * | 1983-04-21 | 1985-12-31 | Rca Corporation | Manual hue control as for a digital TV |
| US4554576A (en) * | 1983-04-21 | 1985-11-19 | Rca Corporation | Auto flesh circuitry as for a digital TV receiver |
| US4528586A (en) * | 1983-04-21 | 1985-07-09 | Rca Corporation | Automatic tint correction with reduced color saturation error |
| US4544944A (en) * | 1983-06-07 | 1985-10-01 | Rca Corporation | Auto-tint circuit for a TV receiver |
| US4523221A (en) * | 1983-06-07 | 1985-06-11 | Rca Corporation | TV Receiver circuitry for performing chroma gain, auto-flesh control and the matrixing of I and Q signals to (R-Y), (B-Y) and (G-Y) signals |
| US4625233A (en) * | 1985-06-26 | 1986-11-25 | Rca Corporation | I-phase fleshtone correction system using R-Y, G-Y and B-Y color difference signal demodulators |
| JPH0799861B2 (ja) * | 1991-02-28 | 1995-10-25 | 松下電器産業株式会社 | 階調補正回路 |
| JP3456818B2 (ja) * | 1996-03-04 | 2003-10-14 | 株式会社日立国際電気 | 色調補正装置 |
| US7046305B1 (en) | 1999-11-18 | 2006-05-16 | Thomson Licensing | Method and apparatus for enhancing green contrast of a color video signal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3663744A (en) * | 1970-07-22 | 1972-05-16 | Rca Corp | Selective tint correction circuits |
| JPS5015622B1 (en, 2012) * | 1970-09-25 | 1975-06-06 |
-
1975
- 1975-05-23 US US05/580,681 patent/US3996608A/en not_active Expired - Lifetime
-
1976
- 1976-05-14 MX MX100357U patent/MX3369E/es unknown
- 1976-05-20 CA CA252,994A patent/CA1065469A/en not_active Expired
- 1976-05-21 JP JP51059550A patent/JPS51144523A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| MX3369E (es) | 1980-10-15 |
| JPS51144523A (en) | 1976-12-11 |
| US3996608A (en) | 1976-12-07 |
| JPS5736788B2 (en, 2012) | 1982-08-05 |
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| KR800000983B1 (ko) | 제한된 범위를 가지는 색상 교정 장치 | |
| US2909594A (en) | Color television receiver with chroma phase-shifting means | |
| US4625233A (en) | I-phase fleshtone correction system using R-Y, G-Y and B-Y color difference signal demodulators | |
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