DE2937092A1 - Sicherheitseinrichtung fuer eine kamera - Google Patents

Sicherheitseinrichtung fuer eine kamera

Info

Publication number
DE2937092A1
DE2937092A1 DE19792937092 DE2937092A DE2937092A1 DE 2937092 A1 DE2937092 A1 DE 2937092A1 DE 19792937092 DE19792937092 DE 19792937092 DE 2937092 A DE2937092 A DE 2937092A DE 2937092 A1 DE2937092 A1 DE 2937092A1
Authority
DE
Germany
Prior art keywords
switch
signal
transistor
camera
counter switch
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
DE19792937092
Other languages
German (de)
English (en)
Other versions
DE2937092C2 (US08124317-20120228-C00026.png
Inventor
Masaharu Kawamura
Yoshihiro Shigeta
Yoji Sugiura
Nubuo Tezuka
Masanori Uchidoi
Hiroshi Yamamoto
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 DE2937092A1 publication Critical patent/DE2937092A1/de
Application granted granted Critical
Publication of DE2937092C2 publication Critical patent/DE2937092C2/de
Granted 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/18—Signals indicating condition of a camera member or suitability of light
    • G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder
    • 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)
  • Exposure Control For Cameras (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
DE19792937092 1978-09-14 1979-09-13 Sicherheitseinrichtung fuer eine kamera Granted DE2937092A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53113047A JPS5922214B2 (ja) 1978-09-14 1978-09-14 カメラのための誤動作防止回路

Publications (2)

Publication Number Publication Date
DE2937092A1 true DE2937092A1 (de) 1980-03-27
DE2937092C2 DE2937092C2 (US08124317-20120228-C00026.png) 1987-03-26

Family

ID=14602135

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792937092 Granted DE2937092A1 (de) 1978-09-14 1979-09-13 Sicherheitseinrichtung fuer eine kamera

Country Status (3)

Country Link
US (1) US4236802A (US08124317-20120228-C00026.png)
JP (1) JPS5922214B2 (US08124317-20120228-C00026.png)
DE (1) DE2937092A1 (US08124317-20120228-C00026.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56156820A (en) * 1980-05-09 1981-12-03 Nippon Kogaku Kk <Nikon> Shutter release lock device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2461151B2 (de) * 1973-12-26 1978-09-07 Canon K.K., Tokio Stehbildkamera

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1772237B1 (de) * 1968-04-18 1970-08-27 Compur Werk Gmbh & Co Photographische Kamera mit einer elektronischen Zeitbildungseinrichtung
US4001843A (en) * 1973-12-13 1977-01-04 Polaroid Corporation Photographic control system with evaluation control
US4181417A (en) * 1977-03-16 1980-01-01 Canon Kabushiki Kaisha Shutter operation control device for a photographic camera

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2461151B2 (de) * 1973-12-26 1978-09-07 Canon K.K., Tokio Stehbildkamera

Also Published As

Publication number Publication date
JPS5922214B2 (ja) 1984-05-25
US4236802A (en) 1980-12-02
JPS5540437A (en) 1980-03-21
DE2937092C2 (US08124317-20120228-C00026.png) 1987-03-26

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition