JPS5487110A - Detection circuit for television synchronizing signal - Google Patents
Detection circuit for television synchronizing signalInfo
- Publication number
- JPS5487110A JPS5487110A JP15526577A JP15526577A JPS5487110A JP S5487110 A JPS5487110 A JP S5487110A JP 15526577 A JP15526577 A JP 15526577A JP 15526577 A JP15526577 A JP 15526577A JP S5487110 A JPS5487110 A JP S5487110A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- synchronizing signal
- synchronizing
- detection circuit
- sampling
- 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
- Synchronizing For Television (AREA)
Abstract
PURPOSE: To obtain the discrimination output of the presence of TV synchronizing signal, by picking up the TV synchronizing signal and performing the waveform treatment digitally.
CONSTITUTION: The TV synchronizing signal 1a is separated from the TV composite video signal 10a with the slice circuit 1, the astable multivibrator 2 performs rectangular wave oscillation in synchronizing with the signal 1a, the output pulse 2a is the signal 3a by being delayed 3, the sampling point is at low level with the sampling by means of the clock of signal 3a for the signal 1a in the sampling circuit 4, and the output signal 4a is obtained. On the other hand, if the signal 10a is absent, the signal 4a is at high level.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15526577A JPS6038910B2 (en) | 1977-12-23 | 1977-12-23 | TV synchronization signal detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15526577A JPS6038910B2 (en) | 1977-12-23 | 1977-12-23 | TV synchronization signal detection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5487110A true JPS5487110A (en) | 1979-07-11 |
JPS6038910B2 JPS6038910B2 (en) | 1985-09-03 |
Family
ID=15602123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15526577A Expired JPS6038910B2 (en) | 1977-12-23 | 1977-12-23 | TV synchronization signal detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6038910B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5730472A (en) * | 1980-07-29 | 1982-02-18 | Sanyo Electric Co Ltd | Reception detecting circuit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62290078A (en) * | 1986-06-09 | 1987-12-16 | 古河電気工業株式会社 | Connection part of electronic circuit member |
-
1977
- 1977-12-23 JP JP15526577A patent/JPS6038910B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5730472A (en) * | 1980-07-29 | 1982-02-18 | Sanyo Electric Co Ltd | Reception detecting circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6038910B2 (en) | 1985-09-03 |
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