JPS5479015A - Sampling pulse generating circuit - Google Patents
Sampling pulse generating circuitInfo
- Publication number
- JPS5479015A JPS5479015A JP14608377A JP14608377A JPS5479015A JP S5479015 A JPS5479015 A JP S5479015A JP 14608377 A JP14608377 A JP 14608377A JP 14608377 A JP14608377 A JP 14608377A JP S5479015 A JPS5479015 A JP S5479015A
- Authority
- JP
- Japan
- Prior art keywords
- synchronizing signal
- horizontal synchronizing
- sampling
- pulse
- pulses
- 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 obtain sampling pulses stable to horizontal synchronizing signal by always taking the phase synchronization of sampling with the horizontal synchronizing signal thereby generating clock pulses.
CONSTITUTION: A monostable multi 13 outputs the pulse signal of negative characteristics of a pulse width longer than 1/2 of the period of the horizontal synchronizing signal and shorter than 1 at the pulse fall of the TV composite synchronizing signal. This is to make the period of the vertical and horizontal equalization pulses the same as the period of the horizontal synchronizing signal and the fall frequency of each pulse coincides with that of the horizontal synchronizing signal. When the VCO 17 of a frequency multiplier generates the clock pulses necessary for sampling and flows the same to a clock control circuit 10 and frequency dividing counter 18, the circuit 10 makes the same to the output of a sampling pulse generating circuit at the time necessary for sampling and the counter 18 makes them the same frequency as that of the horizontal synchronizing signal and supplies these to a PD 15 thereby making the clock pulses free from any phase difference. Hence, the sampling pulses stable to the horizontal synchronizing signal may be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14608377A JPS5479015A (en) | 1977-12-07 | 1977-12-07 | Sampling pulse generating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14608377A JPS5479015A (en) | 1977-12-07 | 1977-12-07 | Sampling pulse generating circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5479015A true JPS5479015A (en) | 1979-06-23 |
Family
ID=15399724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14608377A Pending JPS5479015A (en) | 1977-12-07 | 1977-12-07 | Sampling pulse generating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5479015A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5789140A (en) * | 1980-11-25 | 1982-06-03 | Yokogawa Hokushin Electric Corp | Hard copying machine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50138721A (en) * | 1974-04-23 | 1975-11-05 | ||
JPS511024A (en) * | 1974-06-21 | 1976-01-07 | Sony Corp |
-
1977
- 1977-12-07 JP JP14608377A patent/JPS5479015A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50138721A (en) * | 1974-04-23 | 1975-11-05 | ||
JPS511024A (en) * | 1974-06-21 | 1976-01-07 | Sony Corp |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5789140A (en) * | 1980-11-25 | 1982-06-03 | Yokogawa Hokushin Electric Corp | Hard copying machine |
JPS6143731B2 (en) * | 1980-11-25 | 1986-09-29 | Yokogawa Hokushin Electric |
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