DE2611298C3 - Belichtungssteuerschaltung - Google Patents

Belichtungssteuerschaltung

Info

Publication number
DE2611298C3
DE2611298C3 DE2611298A DE2611298A DE2611298C3 DE 2611298 C3 DE2611298 C3 DE 2611298C3 DE 2611298 A DE2611298 A DE 2611298A DE 2611298 A DE2611298 A DE 2611298A DE 2611298 C3 DE2611298 C3 DE 2611298C3
Authority
DE
Germany
Prior art keywords
time interval
exposure control
integrator
converter
measuring circuit
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.)
Expired
Application number
DE2611298A
Other languages
German (de)
English (en)
Other versions
DE2611298A1 (de
DE2611298B2 (de
Inventor
Fumio Ito
Tadashi Ito
Soichi Machida Tokio Nakamoto
Nobuhiko Tokio Shinoda
Kanagawa Yokohama
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
Publication of DE2611298A1 publication Critical patent/DE2611298A1/de
Publication of DE2611298B2 publication Critical patent/DE2611298B2/de
Application granted granted Critical
Publication of DE2611298C3 publication Critical patent/DE2611298C3/de
Expired 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
    • G03B7/093—Digital circuits for control of exposure time

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analogue/Digital Conversion (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
DE2611298A 1975-03-18 1976-03-17 Belichtungssteuerschaltung Expired DE2611298C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50032616A JPS51107181A (en) 1975-03-18 1975-03-18 Sotsukoryohenkanhoshiki

Publications (3)

Publication Number Publication Date
DE2611298A1 DE2611298A1 (de) 1976-10-14
DE2611298B2 DE2611298B2 (de) 1978-04-06
DE2611298C3 true DE2611298C3 (de) 1978-12-07

Family

ID=12363776

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2611298A Expired DE2611298C3 (de) 1975-03-18 1976-03-17 Belichtungssteuerschaltung

Country Status (3)

Country Link
US (1) US4057809A (cg-RX-API-DMAC7.html)
JP (1) JPS51107181A (cg-RX-API-DMAC7.html)
DE (1) DE2611298C3 (cg-RX-API-DMAC7.html)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219260A (en) * 1977-03-11 1980-08-26 Canon Kabushiki Kaisha Camera having a release control device
JPS5421336A (en) * 1977-07-18 1979-02-17 Konishiroku Photo Ind Co Ltd Input metho for exposure control information of camera
US4213683A (en) * 1977-07-18 1980-07-22 Ricoh Company, Ltd. Electronic shutter driving device for camera
JPS54106282A (en) * 1978-02-07 1979-08-21 Minolta Camera Co Ltd Photometric method and apparatus
JPS5642223A (en) * 1979-09-17 1981-04-20 Olympus Optical Co Ltd Light source device for endscope
US4549149A (en) * 1983-04-08 1985-10-22 Warner-Lambert Technologies, Inc. Current to frequency converter switched to increased frequency when current input low
JP2561075B2 (ja) * 1986-07-15 1996-12-04 セイコープレシジョン株式会社 カメラ用アナログ−デイジタル変換回路
US6894264B2 (en) * 2002-10-15 2005-05-17 Applera Corporation System and methods for dynamic range extension using variable length integration time sampling
US9918017B2 (en) 2012-09-04 2018-03-13 Duelight Llc Image sensor apparatus and method for obtaining multiple exposures with zero interframe time
US12401911B2 (en) 2014-11-07 2025-08-26 Duelight Llc Systems and methods for generating a high-dynamic range (HDR) pixel stream
US12401912B2 (en) 2014-11-17 2025-08-26 Duelight Llc System and method for generating a digital image
US12445736B2 (en) 2015-05-01 2025-10-14 Duelight Llc Systems and methods for generating a digital image

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
JPS5321950Y2 (cg-RX-API-DMAC7.html) * 1973-05-15 1978-06-08

Also Published As

Publication number Publication date
DE2611298A1 (de) 1976-10-14
DE2611298B2 (de) 1978-04-06
JPS51107181A (en) 1976-09-22
US4057809A (en) 1977-11-08

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)