JPS52115A - Focus control device - Google Patents

Focus control device

Info

Publication number
JPS52115A
JPS52115A JP50077368A JP7736875A JPS52115A JP S52115 A JPS52115 A JP S52115A JP 50077368 A JP50077368 A JP 50077368A JP 7736875 A JP7736875 A JP 7736875A JP S52115 A JPS52115 A JP S52115A
Authority
JP
Japan
Prior art keywords
control device
focus control
picture
signal
vicinity
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
JP50077368A
Other languages
Japanese (ja)
Inventor
Tsuyoshi Tsuda
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP50077368A priority Critical patent/JPS52115A/en
Publication of JPS52115A publication Critical patent/JPS52115A/en
Pending legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To control focus by detecting maximum value of output signal from the difference between a video signal representing part of picture and a signal displaying part in the vicinity of part of the picture.
COPYRIGHT: (C)1977,JPO&Japio
JP50077368A 1975-06-23 1975-06-23 Focus control device Pending JPS52115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50077368A JPS52115A (en) 1975-06-23 1975-06-23 Focus control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50077368A JPS52115A (en) 1975-06-23 1975-06-23 Focus control device

Publications (1)

Publication Number Publication Date
JPS52115A true JPS52115A (en) 1977-01-05

Family

ID=13631948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50077368A Pending JPS52115A (en) 1975-06-23 1975-06-23 Focus control device

Country Status (1)

Country Link
JP (1) JPS52115A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6079876U (en) * 1983-11-02 1985-06-03 三洋電機株式会社 Auto focus control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6079876U (en) * 1983-11-02 1985-06-03 三洋電機株式会社 Auto focus control circuit

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