JPS5679381A - Video signal sampling circuit - Google Patents

Video signal sampling circuit

Info

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
Application number
JP15565379A
Other languages
Japanese (ja)
Inventor
Akiyoshi Hakoyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15565379A priority Critical patent/JPS5679381A/en
Publication of JPS5679381A publication Critical patent/JPS5679381A/en
Pending legal-status Critical Current

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
JP15565379A 1979-12-03 1979-12-03 Video signal sampling circuit Pending JPS5679381A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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