JPS5591278A - Color submodulator - Google Patents
Color submodulatorInfo
- Publication number
- JPS5591278A JPS5591278A JP16495378A JP16495378A JPS5591278A JP S5591278 A JPS5591278 A JP S5591278A JP 16495378 A JP16495378 A JP 16495378A JP 16495378 A JP16495378 A JP 16495378A JP S5591278 A JPS5591278 A JP S5591278A
- Authority
- JP
- Japan
- Prior art keywords
- output
- color
- circuit
- signal
- featuring
- 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
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE: To secure a high-contrast display on the screen for the information of the characters, patterns and others by giving addition to the signals of plural different luminance levels and the mixing the output of the additon with the output of the 1st mixer circuit.
CONSTITUTION: Oscillation circuit 1 delivers the continuous signals featuring the frequency of an integer-fold as much as the chrominance subcarrier, generates 2 the symmetrical square wave featuring the phase corresponding to the carrier chrominance signal and selects one of the waves according to the color display signal. Then the product is obtained through gate circuit 4 between the symmetrical square wave signal featuring the phase corresponding to that of the color burst signal and the burst flag pulse, and mixture 5 is given to the output between circuits 3 and 4. On the other hand, adder circuit 7 receives the weighting properly in accordance with the display color of the luminous point designated with the color display signal, and then addition 7 is given to the signals of plural different luminance levels. And the addition output is mixed with the output of circuit 5. Thus the information of the characters, patterns and others can be displayed on the screen in a high contrast.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16495378A JPS5591278A (en) | 1978-12-28 | 1978-12-28 | Color submodulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16495378A JPS5591278A (en) | 1978-12-28 | 1978-12-28 | Color submodulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5591278A true JPS5591278A (en) | 1980-07-10 |
Family
ID=15802993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16495378A Pending JPS5591278A (en) | 1978-12-28 | 1978-12-28 | Color submodulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5591278A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60185405A (en) * | 1984-03-02 | 1985-09-20 | Rohm Co Ltd | Balanced modulation circuit |
-
1978
- 1978-12-28 JP JP16495378A patent/JPS5591278A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60185405A (en) * | 1984-03-02 | 1985-09-20 | Rohm Co Ltd | Balanced modulation circuit |
JPH0351359B2 (en) * | 1984-03-02 | 1991-08-06 | Rohm Kk |
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