JPS5679381A - Video signal sampling circuit - Google Patents
Video signal sampling circuitInfo
- Publication number
- JPS5679381A JPS5679381A JP15565379A JP15565379A JPS5679381A JP S5679381 A JPS5679381 A JP S5679381A JP 15565379 A JP15565379 A JP 15565379A JP 15565379 A JP15565379 A JP 15565379A JP S5679381 A JPS5679381 A JP S5679381A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- sampling
- latched
- picture
- influence
- 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)
- Digital Computer Display Output (AREA)
Abstract
PURPOSE: To stably sample a video signal of the high density CRT display, etc., as well, by dividing a video signal area between the horizontal synchronizing signals.
CONSTITUTION: A quantizing video signal 47 of the sensible heat system CRT hard copy device is latched by the input data latches 31, 32 by a sampling signal 48 which has passed through the delay circuits 33, 34, respectively. Subsequently, each video signal 47 which has been latched is provided to the memiconductor memories 29, 30, respectively, which have been providd on the left side and the right side of the picture so that they are opposed. Accordingly, the video signal and the sampling signal can be put in phase to both the left and right sides of the picture, and therefore the influence of phase drift of the sampling signal in the video signal area between the horizontal synchronizing signals can be reduced to half. In this regard, when the number of divisions of the video signal area is increased, the influence can be nearly removed, and the sampling is executed stably.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15565379A JPS5679381A (en) | 1979-12-03 | 1979-12-03 | Video signal sampling circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15565379A JPS5679381A (en) | 1979-12-03 | 1979-12-03 | Video signal sampling circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5679381A true JPS5679381A (en) | 1981-06-29 |
Family
ID=15610661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15565379A Pending JPS5679381A (en) | 1979-12-03 | 1979-12-03 | Video signal sampling circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5679381A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61232762A (en) * | 1985-04-05 | 1986-10-17 | Matsushita Electric Ind Co Ltd | Video signal reading device |
EP0218401A2 (en) * | 1985-10-01 | 1987-04-15 | Seiko Instruments Inc. | An interface circuit for video signal hard copy apparatus and video signal hard copy apparatus provided therewith |
-
1979
- 1979-12-03 JP JP15565379A patent/JPS5679381A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61232762A (en) * | 1985-04-05 | 1986-10-17 | Matsushita Electric Ind Co Ltd | Video signal reading device |
EP0218401A2 (en) * | 1985-10-01 | 1987-04-15 | Seiko Instruments Inc. | An interface circuit for video signal hard copy apparatus and video signal hard copy apparatus provided therewith |
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