GB2229542B - Electronically controlled camera - Google Patents

Electronically controlled camera

Info

Publication number
GB2229542B
GB2229542B GB9003009A GB9003009A GB2229542B GB 2229542 B GB2229542 B GB 2229542B GB 9003009 A GB9003009 A GB 9003009A GB 9003009 A GB9003009 A GB 9003009A GB 2229542 B GB2229542 B GB 2229542B
Authority
GB
United Kingdom
Prior art keywords
electronically controlled
controlled camera
camera
electronically
controlled
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 - Fee Related
Application number
GB9003009A
Other versions
GB2229542A (en
GB9003009D0 (en
Inventor
Takeo Kobayashi
Takao Nishida
Yasushi Tabata
Norio Numako
Katsutoshi Nagai
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of GB9003009D0 publication Critical patent/GB9003009D0/en
Publication of GB2229542A publication Critical patent/GB2229542A/en
Application granted granted Critical
Publication of GB2229542B publication Critical patent/GB2229542B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • 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
    • G03B7/20—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with change of lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Lens Barrels (AREA)
GB9003009A 1989-02-10 1990-02-09 Electronically controlled camera Expired - Fee Related GB2229542B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1031319A JP2796823B2 (en) 1989-02-10 1989-02-10 Electronic control camera

Publications (3)

Publication Number Publication Date
GB9003009D0 GB9003009D0 (en) 1990-04-04
GB2229542A GB2229542A (en) 1990-09-26
GB2229542B true GB2229542B (en) 1993-04-21

Family

ID=12327953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9003009A Expired - Fee Related GB2229542B (en) 1989-02-10 1990-02-09 Electronically controlled camera

Country Status (5)

Country Link
JP (1) JP2796823B2 (en)
DE (1) DE4003963C2 (en)
FR (1) FR2643161B1 (en)
GB (1) GB2229542B (en)
HK (1) HK1004012A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW392091B (en) * 1995-01-06 2000-06-01 Samsung Aerospace Ind Control circuit and method for controlling the operation of a camera having a b shutter operating mode
JP4861234B2 (en) * 2007-04-13 2012-01-25 株式会社エルモ社 Exposure control method and imaging apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1494011A (en) * 1974-10-17 1977-12-07 Fuji Photo Optical Co Ltd Automatic iris control means for variable focal length lens system
EP0189981A1 (en) * 1985-01-11 1986-08-06 Konica Corporation Exposure controlling means for a variable focus type camera
US4777508A (en) * 1985-11-25 1988-10-11 Canon Kabushiki Kaisha Exposure control device for camera of variable focal length type

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4560267A (en) * 1982-03-26 1985-12-24 Minolta Camera Kabushiki Kaisha Camera system operable by carrying data from a camera accessory to a camera body
JPS626232A (en) * 1985-07-02 1987-01-13 Minolta Camera Co Ltd Camera system with preview mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1494011A (en) * 1974-10-17 1977-12-07 Fuji Photo Optical Co Ltd Automatic iris control means for variable focal length lens system
EP0189981A1 (en) * 1985-01-11 1986-08-06 Konica Corporation Exposure controlling means for a variable focus type camera
US4777508A (en) * 1985-11-25 1988-10-11 Canon Kabushiki Kaisha Exposure control device for camera of variable focal length type

Also Published As

Publication number Publication date
HK1004012A1 (en) 1998-11-13
JP2796823B2 (en) 1998-09-10
GB2229542A (en) 1990-09-26
DE4003963C2 (en) 1997-09-04
DE4003963A1 (en) 1990-08-16
FR2643161A1 (en) 1990-08-17
FR2643161B1 (en) 1994-07-22
GB9003009D0 (en) 1990-04-04
JPH02210426A (en) 1990-08-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080209