JPS5461826A - Color signal circuit of television receiver - Google Patents
Color signal circuit of television receiverInfo
- Publication number
- JPS5461826A JPS5461826A JP12886277A JP12886277A JPS5461826A JP S5461826 A JPS5461826 A JP S5461826A JP 12886277 A JP12886277 A JP 12886277A JP 12886277 A JP12886277 A JP 12886277A JP S5461826 A JPS5461826 A JP S5461826A
- Authority
- JP
- Japan
- Prior art keywords
- demodulator
- band
- outputs
- control circuit
- automatic
- 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
Landscapes
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE: To eliminate the influence of phase drift, by sample-holding outputs of a R-Y demodulator and B-Y demodulator at each period only in a burst interval and by using the outputs as control signals of an automatic chroma-saturation control circuit and automatic phase control circuit.
CONSTITUTION: The 1st band-pass amplifier 2 and 2nd band-pass amplifier 3 are cascaded to band-pass transformer 1 covering the band of a composite color signal, which is transmitted via chroma-saturation regulator 4 to R-Y demodulator 5 and B-Y demodulator 6, and G-Y regenerative circuit 7 generating a G-Y signal from outputs of circuits 5 and 6. Here, outputs of the R-Y demodulator and B-Y demodulator are sample-held 25 and 26 at each constant period only in a burst interval, and its output is used as the control signal of automatic chroma-saturation control circuit 4 and automatic phase control circuit 9. Consequently, the influence of phase drift can be eliminated.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52128862A JPS5836873B2 (en) | 1977-10-26 | 1977-10-26 | Television receiver color signal circuit |
US05/954,667 US4216493A (en) | 1977-10-26 | 1978-10-25 | Chrominance signal processing circuit in color television receiver |
DE2846706A DE2846706C2 (en) | 1977-10-26 | 1978-10-26 | Chroma signal processing circuit for color television receivers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52128862A JPS5836873B2 (en) | 1977-10-26 | 1977-10-26 | Television receiver color signal circuit |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53031239A Division JPS5851719B2 (en) | 1977-10-26 | 1978-03-16 | Television receiver color signal circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5461826A true JPS5461826A (en) | 1979-05-18 |
JPS5836873B2 JPS5836873B2 (en) | 1983-08-12 |
Family
ID=14995198
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52128862A Expired JPS5836873B2 (en) | 1977-10-26 | 1977-10-26 | Television receiver color signal circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5836873B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0345649Y2 (en) * | 1986-01-17 | 1991-09-26 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3148243A (en) * | 1958-08-08 | 1964-09-08 | Warwick Electronics Inc | Synchronization of subcarrier oscillator with r-y synchronous detector output |
US3806634A (en) * | 1972-08-21 | 1974-04-23 | Gen Electric | Multiplex color television demodulator |
-
1977
- 1977-10-26 JP JP52128862A patent/JPS5836873B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3148243A (en) * | 1958-08-08 | 1964-09-08 | Warwick Electronics Inc | Synchronization of subcarrier oscillator with r-y synchronous detector output |
US3806634A (en) * | 1972-08-21 | 1974-04-23 | Gen Electric | Multiplex color television demodulator |
Also Published As
Publication number | Publication date |
---|---|
JPS5836873B2 (en) | 1983-08-12 |
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