JPS5579422A - Control circuit of camera - Google Patents

Control circuit of camera

Info

Publication number
JPS5579422A
JPS5579422A JP15344678A JP15344678A JPS5579422A JP S5579422 A JPS5579422 A JP S5579422A JP 15344678 A JP15344678 A JP 15344678A JP 15344678 A JP15344678 A JP 15344678A JP S5579422 A JPS5579422 A JP S5579422A
Authority
JP
Japan
Prior art keywords
circuit
closed
switch means
switch
camera
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.)
Granted
Application number
JP15344678A
Other languages
Japanese (ja)
Other versions
JPH0154688B2 (en
Inventor
Masaaki Nakai
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP15344678A priority Critical patent/JPS5579422A/en
Publication of JPS5579422A publication Critical patent/JPS5579422A/en
Publication of JPH0154688B2 publication Critical patent/JPH0154688B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Power Sources (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE: To save power in control circuit, by supplying clock pulses to the circuit while performing control action, and stopping supply of clock pulses upon completion of control action.
CONSTITUTION: When a battery is fitted in a camera, a pulse generator 2 continues to oscillate incessantly, and the output thereof is sent into a gate circuit 4. In this state, when a photometric switch or release switch is closed for taking photograph, switch means 5 or 6 is closed in cooperation thereof, and a signal is generated from a gate circuit 3 to open the gate circuit 4, then the output pulse from the generator 2 is applied to a microprocessor μP1, which is then changed from waiting state to active state to perform sequence control. When the photographer takes his hand from the shutter button, the switch means 5 or 6 is opened, so that signal from the circuit 3 is eliminated. The circuit 4, however, remains open, and when μP1 detects opening of the switch means 5 or 6, the circuit 4 is finally closed.
COPYRIGHT: (C)1980,JPO&Japio
JP15344678A 1978-12-11 1978-12-11 Control circuit of camera Granted JPS5579422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15344678A JPS5579422A (en) 1978-12-11 1978-12-11 Control circuit of camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15344678A JPS5579422A (en) 1978-12-11 1978-12-11 Control circuit of camera

Publications (2)

Publication Number Publication Date
JPS5579422A true JPS5579422A (en) 1980-06-14
JPH0154688B2 JPH0154688B2 (en) 1989-11-20

Family

ID=15562718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15344678A Granted JPS5579422A (en) 1978-12-11 1978-12-11 Control circuit of camera

Country Status (1)

Country Link
JP (1) JPS5579422A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57101434A (en) * 1980-12-16 1982-06-24 Toshiba Corp Oscillator
JPS5948739A (en) * 1982-09-13 1984-03-21 Nippon Kogaku Kk <Nikon> Camera using microcomputer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028831A (en) * 1973-07-16 1975-03-24
JPS50132923A (en) * 1974-04-05 1975-10-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028831A (en) * 1973-07-16 1975-03-24
JPS50132923A (en) * 1974-04-05 1975-10-21

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57101434A (en) * 1980-12-16 1982-06-24 Toshiba Corp Oscillator
JPS5948739A (en) * 1982-09-13 1984-03-21 Nippon Kogaku Kk <Nikon> Camera using microcomputer

Also Published As

Publication number Publication date
JPH0154688B2 (en) 1989-11-20

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