JPS5491134A - Vertical periodic signal sampling pulse generator circuit - Google Patents
Vertical periodic signal sampling pulse generator circuitInfo
- Publication number
- JPS5491134A JPS5491134A JP15961377A JP15961377A JPS5491134A JP S5491134 A JPS5491134 A JP S5491134A JP 15961377 A JP15961377 A JP 15961377A JP 15961377 A JP15961377 A JP 15961377A JP S5491134 A JPS5491134 A JP S5491134A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- signals
- pulses
- output
- oscillator
- 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)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
PURPOSE: To generate arbitrarily sampling pulses for VIR signals from composite video signals by using a pulse oscillator which oscillates on a frequency five times as high as a horizontal period.
CONSTITUTION: Composite synchronizing signals are inputted to terminal 1, and vertical synchronizing signals are integrated. These signals are inputted to latch 3, and a pulse train is obtained from the latched output and the NAND output of composite synchronizing signals, and obtained pulses are ounted by counter 4. When the counting of the 21st pulse corresponding to the start time of the 16th horizontal period where VIR signals are inserted is stated, trigger pulse h is outputted to oscillator 5. Then oscillator 5 generates pulse i on a frequency five times as high as a horizontal period. This pulse i is counted by counter 6 to generate pulses j and k corresponding to the second and the third horizontal periods, where VIR signals are inserted, respectively from output j. Added output pulse l of these pulses becomes a color signal sampling pulse.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15961377A JPS5826235B2 (en) | 1977-12-28 | 1977-12-28 | Vertical periodic signal extraction pulse generation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15961377A JPS5826235B2 (en) | 1977-12-28 | 1977-12-28 | Vertical periodic signal extraction pulse generation circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5491134A true JPS5491134A (en) | 1979-07-19 |
JPS5826235B2 JPS5826235B2 (en) | 1983-06-01 |
Family
ID=15697529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15961377A Expired JPS5826235B2 (en) | 1977-12-28 | 1977-12-28 | Vertical periodic signal extraction pulse generation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5826235B2 (en) |
-
1977
- 1977-12-28 JP JP15961377A patent/JPS5826235B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5826235B2 (en) | 1983-06-01 |
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