JPS55137784A - Focus adjustment system in image pickup device using image sensor - Google Patents

Focus adjustment system in image pickup device using image sensor

Info

Publication number
JPS55137784A
JPS55137784A JP4621679A JP4621679A JPS55137784A JP S55137784 A JPS55137784 A JP S55137784A JP 4621679 A JP4621679 A JP 4621679A JP 4621679 A JP4621679 A JP 4621679A JP S55137784 A JPS55137784 A JP S55137784A
Authority
JP
Japan
Prior art keywords
output
levels
focus
amplifiers
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.)
Granted
Application number
JP4621679A
Other languages
Japanese (ja)
Other versions
JPS6243590B2 (en
Inventor
Katsuumi Koyanagi
Kenji Ogino
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP4621679A priority Critical patent/JPS55137784A/en
Publication of JPS55137784A publication Critical patent/JPS55137784A/en
Publication of JPS6243590B2 publication Critical patent/JPS6243590B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals

Abstract

PURPOSE:To make it possible to facilitate taking the focus by providing lightness and darkness discrimination reference levels to count picture element outputs between these levels. CONSTITUTION:The picture element output of image sensor 4 which is gated by gates 6 and 7 and corresponds to the light part and the dark part of an object is held in the input side of amplifiers A1 and A6. Light part discrimination reference level V1 and dark part discrimination reference level V2 which are corrected according to transmitivity of the object are output from amplifiers A4 and A5 of adder circuits respectively. When these reference levels and the output of amplifier 5 are supplied to amplifiers A7 and A8 respectively, picture element output pulses between levels V1 and V2 are output from NAND element 9. The number of these pulses is counted in 10 for every scanning and is displayed on display unit 12. Consequently, if the number of pulses is set to a minimum while changing gradually the focus of the image pickup device, the focus can be taken simply.
JP4621679A 1979-04-16 1979-04-16 Focus adjustment system in image pickup device using image sensor Granted JPS55137784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4621679A JPS55137784A (en) 1979-04-16 1979-04-16 Focus adjustment system in image pickup device using image sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4621679A JPS55137784A (en) 1979-04-16 1979-04-16 Focus adjustment system in image pickup device using image sensor

Publications (2)

Publication Number Publication Date
JPS55137784A true JPS55137784A (en) 1980-10-27
JPS6243590B2 JPS6243590B2 (en) 1987-09-16

Family

ID=12740899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4621679A Granted JPS55137784A (en) 1979-04-16 1979-04-16 Focus adjustment system in image pickup device using image sensor

Country Status (1)

Country Link
JP (1) JPS55137784A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5899069A (en) * 1981-12-08 1983-06-13 Sankusu:Kk Signal processor for image sensor
JPS58129407A (en) * 1982-01-28 1983-08-02 Toshiba Corp Automatic focusing device
JPS58215526A (en) * 1982-06-10 1983-12-15 Ricoh Co Ltd Focusing display
JPS58215528A (en) * 1982-06-10 1983-12-15 Ricoh Co Ltd Focusing display
JPS59133513A (en) * 1982-11-05 1984-07-31 ザ・ブリテイツシユ・ライブラリ−・ボ−ド Apparatus for indicating focusing condition of image of document
JPS60121407A (en) * 1983-11-09 1985-06-28 Shinetsu Eng Kk Focusing method
JPS60178418A (en) * 1984-02-22 1985-09-12 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Focus controller for optical system
JPS60189177U (en) * 1984-05-25 1985-12-14 富士電機株式会社 Captured image focus adjustment device
JPS6111714A (en) * 1984-06-26 1986-01-20 Matsushita Electric Ind Co Ltd Automatic focus adjuster of microscope
US4633319A (en) * 1984-08-08 1986-12-30 Fuji Electric Co., Ltd. Method and apparatus for detecting focusing in an image pickup device
JPH0388079A (en) * 1989-08-31 1991-04-12 Seikosha Co Ltd Method for recognizing object

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5899069A (en) * 1981-12-08 1983-06-13 Sankusu:Kk Signal processor for image sensor
JPH0546144B2 (en) * 1981-12-08 1993-07-13 Sunx Ltd
JPS58129407A (en) * 1982-01-28 1983-08-02 Toshiba Corp Automatic focusing device
JPH0368334B2 (en) * 1982-06-10 1991-10-28 Ricoh Kk
JPS58215526A (en) * 1982-06-10 1983-12-15 Ricoh Co Ltd Focusing display
JPS58215528A (en) * 1982-06-10 1983-12-15 Ricoh Co Ltd Focusing display
JPS59133513A (en) * 1982-11-05 1984-07-31 ザ・ブリテイツシユ・ライブラリ−・ボ−ド Apparatus for indicating focusing condition of image of document
JPS60121407A (en) * 1983-11-09 1985-06-28 Shinetsu Eng Kk Focusing method
JPS60178418A (en) * 1984-02-22 1985-09-12 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Focus controller for optical system
JPS60189177U (en) * 1984-05-25 1985-12-14 富士電機株式会社 Captured image focus adjustment device
JPH0342781Y2 (en) * 1984-05-25 1991-09-06
JPS6111714A (en) * 1984-06-26 1986-01-20 Matsushita Electric Ind Co Ltd Automatic focus adjuster of microscope
JPH0462046B2 (en) * 1984-06-26 1992-10-05 Matsushita Electric Ind Co Ltd
US4633319A (en) * 1984-08-08 1986-12-30 Fuji Electric Co., Ltd. Method and apparatus for detecting focusing in an image pickup device
JPH0388079A (en) * 1989-08-31 1991-04-12 Seikosha Co Ltd Method for recognizing object
JPH0551944B2 (en) * 1989-08-31 1993-08-04 Seikosha Kk

Also Published As

Publication number Publication date
JPS6243590B2 (en) 1987-09-16

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