GB1596925A - Control circuit for a movie camera - Google Patents

Control circuit for a movie camera Download PDF

Info

Publication number
GB1596925A
GB1596925A GB52448/77A GB5244877A GB1596925A GB 1596925 A GB1596925 A GB 1596925A GB 52448/77 A GB52448/77 A GB 52448/77A GB 5244877 A GB5244877 A GB 5244877A GB 1596925 A GB1596925 A GB 1596925A
Authority
GB
United Kingdom
Prior art keywords
switch
control circuit
circuit
motor
predetermined
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
GB52448/77A
Other languages
English (en)
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.)
Bell and Howell Japan
Original Assignee
Bell and Howell Japan
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 Bell and Howell Japan filed Critical Bell and Howell Japan
Publication of GB1596925A publication Critical patent/GB1596925A/en
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
    • G03B7/081—Analogue circuits
    • G03B7/087—Analogue 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
    • G03B19/00—Cameras
    • G03B19/18—Motion-picture cameras
    • 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
    • G03B7/081—Analogue circuits
    • G03B7/085—Analogue circuits for control of aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Direct Current Motors (AREA)
  • Details Of Cameras Including Film Mechanisms (AREA)
GB52448/77A 1976-12-16 1977-12-16 Control circuit for a movie camera Expired GB1596925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1976167810U JPS5385136U (enrdf_load_stackoverflow) 1976-12-16 1976-12-16

Publications (1)

Publication Number Publication Date
GB1596925A true GB1596925A (en) 1981-09-03

Family

ID=15856516

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52448/77A Expired GB1596925A (en) 1976-12-16 1977-12-16 Control circuit for a movie camera

Country Status (3)

Country Link
JP (1) JPS5385136U (enrdf_load_stackoverflow)
DE (1) DE2756180A1 (enrdf_load_stackoverflow)
GB (1) GB1596925A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE2756180A1 (de) 1978-06-29
JPS5385136U (enrdf_load_stackoverflow) 1978-07-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]