JPS5491135A - Vertical periodic signal sampling pulse generator circuit - Google Patents
Vertical periodic signal sampling pulse generator circuitInfo
- Publication number
- JPS5491135A JPS5491135A JP15961477A JP15961477A JPS5491135A JP S5491135 A JPS5491135 A JP S5491135A JP 15961477 A JP15961477 A JP 15961477A JP 15961477 A JP15961477 A JP 15961477A JP S5491135 A JPS5491135 A JP S5491135A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- signals
- horizontal period
- pulses
- pulse generator
- 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
Abstract
PURPOSE: To generate arbitrarily sampling pulses for VIR signals from composite video signals by using a pulse generator which oscillates on a frequency five times as high as a horizontal period.
CONSTITUTION: Vertical synchronizing signals are inputted to input terminal 1, and oscillator 5 generates a pulse train through integrator circuit 2 and latch 3. This pulse k is counted by counter 6 within a horizontal period just before the horizontal period where VIR signals are inserted, and pulse e is outputted when the number of pulses k reaches a prescribed value. Though oscillation is stopped by pulse e, oscillator 5 generates a pulse train through latch 4 by the coming of a horizontal synchronizing signal at a start time of the horizontal period where VIR signals are inserted. The number of these pulses is counted by counter 7, and color signal sampling pulse l is outputted at the timing corresponding to the second and the third horizontal periods where color reference signals are included.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15961477A JPS5826236B2 (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 |
|---|---|---|---|
| JP15961477A JPS5826236B2 (en) | 1977-12-28 | 1977-12-28 | Vertical periodic signal extraction pulse generation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5491135A true JPS5491135A (en) | 1979-07-19 |
| JPS5826236B2 JPS5826236B2 (en) | 1983-06-01 |
Family
ID=15697552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15961477A Expired JPS5826236B2 (en) | 1977-12-28 | 1977-12-28 | Vertical periodic signal extraction pulse generation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5826236B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824284A (en) * | 1981-07-06 | 1983-02-14 | アールシーエー ライセンシング コーポレーシヨン | Method and device for matching timing of microprocessor to video signal |
-
1977
- 1977-12-28 JP JP15961477A patent/JPS5826236B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824284A (en) * | 1981-07-06 | 1983-02-14 | アールシーエー ライセンシング コーポレーシヨン | Method and device for matching timing of microprocessor to video signal |
| JPH0210637B2 (en) * | 1981-07-06 | 1990-03-08 | Rca Licensing Corp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5826236B2 (en) | 1983-06-01 |
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