JPS5773728A - Drive control circuit of shutter device for exposure control - Google Patents

Drive control circuit of shutter device for exposure control

Info

Publication number
JPS5773728A
JPS5773728A JP15032180A JP15032180A JPS5773728A JP S5773728 A JPS5773728 A JP S5773728A JP 15032180 A JP15032180 A JP 15032180A JP 15032180 A JP15032180 A JP 15032180A JP S5773728 A JPS5773728 A JP S5773728A
Authority
JP
Japan
Prior art keywords
circuit
input terminal
supplied
control signal
shutter device
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
JP15032180A
Other languages
Japanese (ja)
Inventor
Yoshihiro Satake
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.)
Nidec Precision Corp
Original Assignee
Nidec Copal Corp
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 Nidec Copal Corp filed Critical Nidec Copal Corp
Priority to JP15032180A priority Critical patent/JPS5773728A/en
Publication of JPS5773728A publication Critical patent/JPS5773728A/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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/58—Means for varying duration of "open" period of shutter
    • G03B9/62—Means for varying duration of "open" period of shutter by varying interval of time between end of opening movement and beginning of closing movement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutter-Related Mechanisms (AREA)

Abstract

PURPOSE:To simplify constitution by controlling a shutter device properly without requiring a switch means for detecting the position of each shutter blade, by using one inversion type FF circuit and two OR circuits in combination. CONSTITUTION:A D type FF circuit FF1 has a data input terminal D connected to an output terminal Q', and a control signal corresponding to the width of exposure time is supplied to the clock input terminal CK. The input terminal a1 of an OR circuit ORa is connected to the output terminal Q of the FF circuit FF1, and the said control signal is supplied to the input terminal a2. The input terminal b1 of an OR circuit ORb is connected to the output terminal Q' of the FF circuit FF1, and the said control signal is supplied to the input terminal b2. The 1st and 2nd driving circuits SDa and SDb provided with coils La and Lb driving the 1st and 2nd unshown shutter blades are controlled by the outputs of the OR circuit ORa and ORb.
JP15032180A 1980-10-27 1980-10-27 Drive control circuit of shutter device for exposure control Pending JPS5773728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15032180A JPS5773728A (en) 1980-10-27 1980-10-27 Drive control circuit of shutter device for exposure control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15032180A JPS5773728A (en) 1980-10-27 1980-10-27 Drive control circuit of shutter device for exposure control

Publications (1)

Publication Number Publication Date
JPS5773728A true JPS5773728A (en) 1982-05-08

Family

ID=15494460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15032180A Pending JPS5773728A (en) 1980-10-27 1980-10-27 Drive control circuit of shutter device for exposure control

Country Status (1)

Country Link
JP (1) JPS5773728A (en)

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