JPS5540437A - Malfunction preventive circuit for camera - Google Patents
Malfunction preventive circuit for cameraInfo
- Publication number
- JPS5540437A JPS5540437A JP11304778A JP11304778A JPS5540437A JP S5540437 A JPS5540437 A JP S5540437A JP 11304778 A JP11304778 A JP 11304778A JP 11304778 A JP11304778 A JP 11304778A JP S5540437 A JPS5540437 A JP S5540437A
- Authority
- JP
- Japan
- Prior art keywords
- state
- release
- shutter
- outputs
- low level
- 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
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)
Priority Applications (3)
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 |
US06/070,800 US4236802A (en) | 1978-09-14 | 1979-08-29 | Safety device for camera |
DE19792937092 DE2937092A1 (de) | 1978-09-14 | 1979-09-13 | Sicherheitseinrichtung fuer eine kamera |
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 |
---|---|
JPS5540437A true JPS5540437A (en) | 1980-03-21 |
JPS5922214B2 JPS5922214B2 (ja) | 1984-05-25 |
Family
ID=14602135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53113047A Expired JPS5922214B2 (ja) | 1978-09-14 | 1978-09-14 | カメラのための誤動作防止回路 |
Country Status (3)
Country | Link |
---|---|
US (1) | US4236802A (ja) |
JP (1) | JPS5922214B2 (ja) |
DE (1) | DE2937092A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56156820A (en) * | 1980-05-09 | 1981-12-03 | Nippon Kogaku Kk <Nikon> | Shutter release lock device |
Family Cites Families (4)
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 |
US4015198A (en) * | 1973-12-26 | 1977-03-29 | Canon Kabushiki Kaisha | Shutter-time-preference single lens reflex camera with automatic film wind-up |
US4181417A (en) * | 1977-03-16 | 1980-01-01 | Canon Kabushiki Kaisha | Shutter operation control device for a photographic camera |
-
1978
- 1978-09-14 JP JP53113047A patent/JPS5922214B2/ja not_active Expired
-
1979
- 1979-08-29 US US06/070,800 patent/US4236802A/en not_active Expired - Lifetime
- 1979-09-13 DE DE19792937092 patent/DE2937092A1/de active Granted
Also Published As
Publication number | Publication date |
---|---|
DE2937092C2 (ja) | 1987-03-26 |
DE2937092A1 (de) | 1980-03-27 |
JPS5922214B2 (ja) | 1984-05-25 |
US4236802A (en) | 1980-12-02 |
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