JPS5444432A - Generator of sampled clock pulse - Google Patents
Generator of sampled clock pulseInfo
- Publication number
- JPS5444432A JPS5444432A JP11072277A JP11072277A JPS5444432A JP S5444432 A JPS5444432 A JP S5444432A JP 11072277 A JP11072277 A JP 11072277A JP 11072277 A JP11072277 A JP 11072277A JP S5444432 A JPS5444432 A JP S5444432A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- phase
- clock pulse
- output
- 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
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE: To produce clock pulse from the horizontal synchronizing signal independently of color or monochrome, by applying the output of the oscillation circuit of which frequency is controlled with the horizontal synchronizing signal to the variable phase shifter controlled with the burst signal.
CONSTITUTION: The horizontal synchronizing signal b is separated 1 and picked up from the input 11 forizontal video signal a, the phase is compared with the signal e in 15MHz at the phase comparison circuit 4, and the DC voltage in response to the phase difference controls the oscillation frequency of the oscillation circuit 5. On the other hand, the burst signal c picked up 2 is converted 3 into the burst pulse signal d and is fed to the phase comparison circuit 9, where the output of the circuit 5 is frequency-divided into 1/4 (waveform f) and the phase comparison 9 is made with the signal g fed via the variable phase shifter 8, and the phase shifter 8 is controlled according to the difference. Accordinly, the signal g is multiplied by n with the multiplying circuit 10 by making agreement the phases of the signal g and d, and the clock pulse h for sampling can be obtained from the output termimal 12.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11072277A JPS5444432A (en) | 1977-09-14 | 1977-09-14 | Generator of sampled clock pulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11072277A JPS5444432A (en) | 1977-09-14 | 1977-09-14 | Generator of sampled clock pulse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5444432A true JPS5444432A (en) | 1979-04-07 |
Family
ID=14542819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11072277A Pending JPS5444432A (en) | 1977-09-14 | 1977-09-14 | Generator of sampled clock pulse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5444432A (en) |
-
1977
- 1977-09-14 JP JP11072277A patent/JPS5444432A/en active Pending
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