JPS57178488A - Luminance signal generator of color television system - Google Patents
Luminance signal generator of color television systemInfo
- Publication number
- JPS57178488A JPS57178488A JP6318381A JP6318381A JPS57178488A JP S57178488 A JPS57178488 A JP S57178488A JP 6318381 A JP6318381 A JP 6318381A JP 6318381 A JP6318381 A JP 6318381A JP S57178488 A JPS57178488 A JP S57178488A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- luminance
- luminance signal
- color
- signal generator
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Systems (AREA)
Abstract
PURPOSE:To prevent picture quality from deteriorating by previously emphasizing a luminance signal, where a decrease in luminance is estimated on the screen of an image receiver by the narrow band characteristics of a color difference signal, on a transmission side. CONSTITUTION:Primary color signals R, G, and B are supplied to a luminance signal synthesizer 5, which synthesizes a luminance signal Y. On the other hand, a color specifying signal M composed of all, two, or one of the primary color signals R, G, and B is supplied to a color change discriminator 7. In response to a change of the specifying signal with time, the discriminator 7 generates a detection signal (d), which is transmitted to a luminance signal emphasizing device 6. The device 6 inputs the signal Y and signal (d) and increases the level of the luminance signal according to the signal (d) to output a corrected luminance signal Y'. Consequently, a decrease in luminance on a screen at a color change part is corrected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6318381A JPS6028193B2 (en) | 1981-04-24 | 1981-04-24 | Brightness signal generator in color television system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6318381A JPS6028193B2 (en) | 1981-04-24 | 1981-04-24 | Brightness signal generator in color television system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57178488A true JPS57178488A (en) | 1982-11-02 |
| JPS6028193B2 JPS6028193B2 (en) | 1985-07-03 |
Family
ID=13221868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6318381A Expired JPS6028193B2 (en) | 1981-04-24 | 1981-04-24 | Brightness signal generator in color television system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6028193B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6386995A (en) * | 1986-09-30 | 1988-04-18 | Matsushita Electric Ind Co Ltd | Signal processing circuit |
| US8523391B2 (en) | 2005-02-10 | 2013-09-03 | Nec Corporation | Flat light source apparatus with separable unit boards |
-
1981
- 1981-04-24 JP JP6318381A patent/JPS6028193B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6386995A (en) * | 1986-09-30 | 1988-04-18 | Matsushita Electric Ind Co Ltd | Signal processing circuit |
| US8523391B2 (en) | 2005-02-10 | 2013-09-03 | Nec Corporation | Flat light source apparatus with separable unit boards |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6028193B2 (en) | 1985-07-03 |
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