JPS55103531A - Exposure time control circuit of camera - Google Patents

Exposure time control circuit of camera

Info

Publication number
JPS55103531A
JPS55103531A JP1056879A JP1056879A JPS55103531A JP S55103531 A JPS55103531 A JP S55103531A JP 1056879 A JP1056879 A JP 1056879A JP 1056879 A JP1056879 A JP 1056879A JP S55103531 A JPS55103531 A JP S55103531A
Authority
JP
Japan
Prior art keywords
exposure time
time control
camera
signals
circuit
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
JP1056879A
Other languages
Japanese (ja)
Inventor
Hidekazu Tano
Koji Suzuki
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
Priority to JP1056879A priority Critical patent/JPS55103531A/en
Priority to US06/113,003 priority patent/US4306785A/en
Priority to GB8002465A priority patent/GB2045957B/en
Priority to GB8032779A priority patent/GB2059612B/en
Priority to FR8002208A priority patent/FR2448164A1/en
Priority to DE3003745A priority patent/DE3003745C2/en
Publication of JPS55103531A publication Critical patent/JPS55103531A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To achieve the higher reliability and miniaturization of the camera by changing over the ON and OFF signals of a mechanical switch and performing setting of exposure magnification and setting of manual exposure time.
CONSTITUTION: A function for automatically controlling exposure time and a function for manually controlling the same are provided. In the case of automatic exposure time control, the ON and OFF signals of a mechanical switch are supplied via changeover circuit 3 to an exposure magnification setting circuit 4, by which the exposure magnification is set in digital quantity. On the other hand, in the case of manual exposure time control, the ON and OFF signals of the switch are supplied to a manual exposure time setting circuit 8 via circuit 11, by which the manual exposure time is set in digital quantity.
COPYRIGHT: (C)1980,JPO&Japio
JP1056879A 1979-02-01 1979-02-01 Exposure time control circuit of camera Pending JPS55103531A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1056879A JPS55103531A (en) 1979-02-01 1979-02-01 Exposure time control circuit of camera
US06/113,003 US4306785A (en) 1979-02-01 1980-01-17 Camera exposure time control circuit
GB8002465A GB2045957B (en) 1979-02-01 1980-01-24 Camera shutter speed control and display
GB8032779A GB2059612B (en) 1979-02-01 1980-01-24 Shutter speed control for a camera
FR8002208A FR2448164A1 (en) 1979-02-01 1980-02-01 LAYING TIME ADJUSTMENT CIRCUIT FOR A CAMERA
DE3003745A DE3003745C2 (en) 1979-02-01 1980-02-01 Exposure time control circuit for a camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1056879A JPS55103531A (en) 1979-02-01 1979-02-01 Exposure time control circuit of camera

Publications (1)

Publication Number Publication Date
JPS55103531A true JPS55103531A (en) 1980-08-07

Family

ID=11753841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1056879A Pending JPS55103531A (en) 1979-02-01 1979-02-01 Exposure time control circuit of camera

Country Status (1)

Country Link
JP (1) JPS55103531A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6185832U (en) * 1984-11-13 1986-06-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6185832U (en) * 1984-11-13 1986-06-05

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