JPS55109092A - Reference pulse extracting system - Google Patents
Reference pulse extracting systemInfo
- Publication number
- JPS55109092A JPS55109092A JP1618679A JP1618679A JPS55109092A JP S55109092 A JPS55109092 A JP S55109092A JP 1618679 A JP1618679 A JP 1618679A JP 1618679 A JP1618679 A JP 1618679A JP S55109092 A JPS55109092 A JP S55109092A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- reference pulse
- burst
- terminal
- 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
- Synchronizing For Television (AREA)
Abstract
PURPOSE: To eliminate the incapability for extraction of the reference pulse by detecting the piling position of the color burst signal and thus varying the phase of the horizontal synchronous signal.
CONSTITUTION: Color TV signal 22 applied to terminal 20 is then applied to synchronous signal isolator circuit 24 as well as to burst signal gate circuit 26. Horizontal synchronous signal 3 separated through circuit 24 is applied to burst gate pulse generator 28 plus multi-vibrators MV5 and MV30 each. The output of generator 28 drives burst gate circuit 26 to obtain color burst signal 9. Level detector 32 delivers detection signal 34 when the level of signal 9 becomes higher than the set value. Signal 34, output 35 of MV5 and reference subcarrier signal 40 sent from terminal 38 are applied to phase difference detector 36, thus obtaining the difference of between, the standard reference pulse and them extraction phase. Output 37 of detector 36 is applied to MV30, and the output 42 is applied to reference pulse extractor 11. And the reference pulse is extracted via output 42 and signal 9 to be taken out to terminal 13.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1618679A JPS55109092A (en) | 1979-02-16 | 1979-02-16 | Reference pulse extracting system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1618679A JPS55109092A (en) | 1979-02-16 | 1979-02-16 | Reference pulse extracting system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55109092A true JPS55109092A (en) | 1980-08-21 |
Family
ID=11909477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1618679A Pending JPS55109092A (en) | 1979-02-16 | 1979-02-16 | Reference pulse extracting system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55109092A (en) |
-
1979
- 1979-02-16 JP JP1618679A patent/JPS55109092A/en active Pending
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