JPS645188A - Digital hue adjustment system - Google Patents
Digital hue adjustment systemInfo
- Publication number
- JPS645188A JPS645188A JP16039887A JP16039887A JPS645188A JP S645188 A JPS645188 A JP S645188A JP 16039887 A JP16039887 A JP 16039887A JP 16039887 A JP16039887 A JP 16039887A JP S645188 A JPS645188 A JP S645188A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- chrominance subcarrier
- hue adjustment
- hue
- digital
- 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.)
- Pending
Links
Abstract
PURPOSE:To eliminate the need for a computing element for hue adjustment and to reduce the scale of a circuit by shifting the phase of a chrominance subcarrier in the stage of chrominance subcarrier generation and adjusting the hue. CONSTITUTION:An R-Y chrominance subcarrier generating circuit 24 and a B-Y chrominance subcarrier generating circuit 25 have quad counters and memories. The memories are stored with digital values of the chrominance subcarrier by the positions of a clock CP and the digital values are stored as many as hue adjustment steps of a hue adjustment switch 26 although the digital values are different according to the steps. Then information on a clock position in specific phase with a color burst signal and information on a hue adjustment step position set by an operation means are used as address signals to read data out of the memories, and the read data are supplied as digital chrominance subcarriers to digital color demodulators 8 and 12. Consequently, any special hue adjusting circuit is not required as a following circuit and the circuit scale is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16039887A JPS645188A (en) | 1987-06-27 | 1987-06-27 | Digital hue adjustment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16039887A JPS645188A (en) | 1987-06-27 | 1987-06-27 | Digital hue adjustment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS645188A true JPS645188A (en) | 1989-01-10 |
Family
ID=15714081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16039887A Pending JPS645188A (en) | 1987-06-27 | 1987-06-27 | Digital hue adjustment system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS645188A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220991A (en) * | 1988-07-08 | 1990-01-24 | Fujitsu Ltd | Color difference signal demodulator |
| JPH04116076U (en) * | 1991-03-28 | 1992-10-15 | アイシン精機株式会社 | Flow rate fine adjustment mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108729A (en) * | 1976-03-09 | 1977-09-12 | Toshiba Corp | Signal process circuit |
| JPS6012887A (en) * | 1983-07-01 | 1985-01-23 | Seiko Epson Corp | Color demodulation circuit system for color television |
| JPS6051387A (en) * | 1983-08-31 | 1985-03-22 | Sony Corp | Digital color decoder |
| JPS60223278A (en) * | 1984-04-19 | 1985-11-07 | Nec Home Electronics Ltd | Digital color correcting device |
-
1987
- 1987-06-27 JP JP16039887A patent/JPS645188A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108729A (en) * | 1976-03-09 | 1977-09-12 | Toshiba Corp | Signal process circuit |
| JPS6012887A (en) * | 1983-07-01 | 1985-01-23 | Seiko Epson Corp | Color demodulation circuit system for color television |
| JPS6051387A (en) * | 1983-08-31 | 1985-03-22 | Sony Corp | Digital color decoder |
| JPS60223278A (en) * | 1984-04-19 | 1985-11-07 | Nec Home Electronics Ltd | Digital color correcting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220991A (en) * | 1988-07-08 | 1990-01-24 | Fujitsu Ltd | Color difference signal demodulator |
| JPH04116076U (en) * | 1991-03-28 | 1992-10-15 | アイシン精機株式会社 | Flow rate fine adjustment mechanism |
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