JPS5446418A - Circuit system of picture display unit - Google Patents
Circuit system of picture display unitInfo
- Publication number
- JPS5446418A JPS5446418A JP11372577A JP11372577A JPS5446418A JP S5446418 A JPS5446418 A JP S5446418A JP 11372577 A JP11372577 A JP 11372577A JP 11372577 A JP11372577 A JP 11372577A JP S5446418 A JPS5446418 A JP S5446418A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- time
- tdo
- generated
- sampling start
- 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
- Transforming Electric Information Into Light Information (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
PURPOSE: To obtain an excellent picture by removing the disturbance at the sampling start time of a video signal generated by the time lag of a CMOS.IC, by generating a sampling pulse which bases upon a horizontal synchronizing signal.
CONSTITUTION: On the basis of horizontal synchronizing signal PH to be inputted to counter C1, signal PM of pulse width tdo is generated at its trailing edge and then mixed with video signal sampling start signal Ps by AND gate 4. Time tdo is set to a value slightly larger than the maximum delay time (td and td) of signal Ps, thereby obtaining signal P's of the same delay time tdo as signal PH. Then, a timing pulse for the A/D conversion of a video signal is generated by signal P's, so that the disturbance of a sampling start time can be eliminated
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11372577A JPS5446418A (en) | 1977-09-20 | 1977-09-20 | Circuit system of picture display unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11372577A JPS5446418A (en) | 1977-09-20 | 1977-09-20 | Circuit system of picture display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5446418A true JPS5446418A (en) | 1979-04-12 |
Family
ID=14619549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11372577A Pending JPS5446418A (en) | 1977-09-20 | 1977-09-20 | Circuit system of picture display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5446418A (en) |
-
1977
- 1977-09-20 JP JP11372577A patent/JPS5446418A/en active Pending
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