JPS6429072A - Field discrimination circuit - Google Patents
Field discrimination circuitInfo
- Publication number
- JPS6429072A JPS6429072A JP62184909A JP18490987A JPS6429072A JP S6429072 A JPS6429072 A JP S6429072A JP 62184909 A JP62184909 A JP 62184909A JP 18490987 A JP18490987 A JP 18490987A JP S6429072 A JPS6429072 A JP S6429072A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- signal
- synchronizing
- outputted
- pulse signal
- 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
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To eliminate a need for adjustment of a pulse width by outputting a H/2-time-width synchronizing pulse in synchronism with a vertical synchronizing signal, and latching this pulse with a horizontal synchronizing signal. CONSTITUTION:A composite synchronizing signal is outputted from a synchronizing separating circuit 1, while a pulse signal corresponding to a vertical synchronizing signal is outputted from an integrating circuit 2. Said output pulse is inputted to a logical differentiating circuit 8, then, a pulse signal whose width is 1/2 of the repetition period of a horizontal synchronizing pulse signal and which is in synchronism with a vertical synchronizing pulse signal is outputted. This pulse signal is latched by a flip-flop 14 at the timing of a horizontal pulse signal outputted from a monostable multivibrator 13. Based on an output from this flip-flop 14, a T flip-flop 5 outputs a field discrimination signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62184909A JPS6429072A (en) | 1987-07-24 | 1987-07-24 | Field discrimination circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62184909A JPS6429072A (en) | 1987-07-24 | 1987-07-24 | Field discrimination circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6429072A true JPS6429072A (en) | 1989-01-31 |
Family
ID=16161456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62184909A Pending JPS6429072A (en) | 1987-07-24 | 1987-07-24 | Field discrimination circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6429072A (en) |
-
1987
- 1987-07-24 JP JP62184909A patent/JPS6429072A/en active Pending
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