JPS57135930A - Digital operation input device for camera - Google Patents

Digital operation input device for camera

Info

Publication number
JPS57135930A
JPS57135930A JP14426181A JP14426181A JPS57135930A JP S57135930 A JPS57135930 A JP S57135930A JP 14426181 A JP14426181 A JP 14426181A JP 14426181 A JP14426181 A JP 14426181A JP S57135930 A JPS57135930 A JP S57135930A
Authority
JP
Japan
Prior art keywords
contact
slider
camera
input device
operation input
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.)
Pending
Application number
JP14426181A
Other languages
Japanese (ja)
Inventor
Fumio Ito
Tadashi Ito
Yukio Mashita
Nobuaki Sakurada
Nobuhiko Shinoda
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
Priority to JP14426181A priority Critical patent/JPS57135930A/en
Publication of JPS57135930A publication Critical patent/JPS57135930A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE:To make an A-D converter and a code plate unnecessary, by converting the displacement due to a moving body directly to a number of pulses corresponding to the displacement quantity when photographic information is set. CONSTITUTION:A slider Ra1 of a switching means Ra for pulse generation is interlocked with the stop to slide in the direction of an arrow Y and is brought into contact with contacts 1''-n'' to generate a pule. A transistor Tr is turned on when the slider is brought into contact with the contact, and the output is generated then. This output is differentiated by a differentiating circuit consisting of a capacitor C and a resistance R'' to generate a pulse for every contact between the slider and the contact. Thus, a preset stop step number is inputted.
JP14426181A 1981-09-12 1981-09-12 Digital operation input device for camera Pending JPS57135930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14426181A JPS57135930A (en) 1981-09-12 1981-09-12 Digital operation input device for camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14426181A JPS57135930A (en) 1981-09-12 1981-09-12 Digital operation input device for camera

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP6582374A Division JPS50158328A (en) 1974-06-10 1974-06-10

Publications (1)

Publication Number Publication Date
JPS57135930A true JPS57135930A (en) 1982-08-21

Family

ID=15357975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14426181A Pending JPS57135930A (en) 1981-09-12 1981-09-12 Digital operation input device for camera

Country Status (1)

Country Link
JP (1) JPS57135930A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956166A (en) * 1972-09-30 1974-05-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956166A (en) * 1972-09-30 1974-05-31

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