JPS522730A - Automatic exposure controlling method - Google Patents

Automatic exposure controlling method

Info

Publication number
JPS522730A
JPS522730A JP7901675A JP7901675A JPS522730A JP S522730 A JPS522730 A JP S522730A JP 7901675 A JP7901675 A JP 7901675A JP 7901675 A JP7901675 A JP 7901675A JP S522730 A JPS522730 A JP S522730A
Authority
JP
Japan
Prior art keywords
controlling method
automatic exposure
exposure controlling
automatic
exposure time
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
JP7901675A
Other languages
Japanese (ja)
Inventor
Nobuhiko Shinoda
Nobuaki Sakurada
Masaharu Kawamura
Tadashi Ito
Hiroyasu Murakami
Fumio Ito
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP7901675A priority Critical patent/JPS522730A/en
Priority to DE2628280A priority patent/DE2628280C2/en
Publication of JPS522730A publication Critical patent/JPS522730A/en
Priority to US05/888,622 priority patent/US4167312A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits
    • G03B7/097—Digital circuits for control of both exposure time and aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To obtain an automatic exposure controlling method of an exposure time preference system having a miniature size, cheap cost and excellent precision.
COPYRIGHT: (C)1977,JPO&Japio
JP7901675A 1975-06-24 1975-06-24 Automatic exposure controlling method Pending JPS522730A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7901675A JPS522730A (en) 1975-06-24 1975-06-24 Automatic exposure controlling method
DE2628280A DE2628280C2 (en) 1975-06-24 1976-06-24 Exposure control device for a camera
US05/888,622 US4167312A (en) 1975-06-24 1978-03-21 Exposure control circuit for a camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7901675A JPS522730A (en) 1975-06-24 1975-06-24 Automatic exposure controlling method

Publications (1)

Publication Number Publication Date
JPS522730A true JPS522730A (en) 1977-01-10

Family

ID=13678137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7901675A Pending JPS522730A (en) 1975-06-24 1975-06-24 Automatic exposure controlling method

Country Status (2)

Country Link
JP (1) JPS522730A (en)
DE (1) DE2628280C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57210205A (en) * 1981-06-22 1982-12-23 Central Res Inst Of Electric Power Ind Manufacture of inert gas through catalytic combustion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748979A (en) * 1970-12-28 1973-07-31 Copal Co Ltd Electronic shutter apparatus for cameras
JPS5017882A (en) * 1973-06-15 1975-02-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57210205A (en) * 1981-06-22 1982-12-23 Central Res Inst Of Electric Power Ind Manufacture of inert gas through catalytic combustion
JPH0151722B2 (en) * 1981-06-22 1989-11-06 Denryoku Chuo Kenkyujo

Also Published As

Publication number Publication date
DE2628280A1 (en) 1977-01-13
DE2628280C2 (en) 1986-04-03

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