Power control circuit for cameras

Details Power control circuit for cameras Power control circuit for cameras

1991-02-25

1992-08-04

Perkey, W. B.

G03B 726

Patent

active

051363275

ABSTRACT:
A power supply unit for cameras, wherein if no operation is performed for a certain time with a power switch ON, power is supplied only to a display unit and the power supply to other circuits is automatically turned OFF. In this state, when a release switch, for instance, is operated, power is supplied to all circuits. When the power switch is turned OFF, display data is stored and the power supply to all circuits including a liquid crystal display unit is turned OFF. When the power switch is turned ON, the display data contained is transferred to the liquid crystal display unit for display. This prevents unnecessary power consumption.

REFERENCES:
patent: 4387977 (1983-06-01), Uchidoi et al.
patent: 4429974 (1984-02-01), Suzuki
patent: 4553140 (1985-11-01), Maida
patent: 4645326 (1987-02-01), Kiuchi et al.
patent: 4733265 (1988-03-01), Haraguchi et al.
patent: 4872069 (1989-10-01), Takami et al.
patent: 4914469 (1990-04-01), Ishimura et al.
patent: 4916474 (1990-04-01), Miyazawa et al.
patent: 5032864 (1991-07-01), Ishimura et al.
patent: 5079585 (1992-01-01), Yamada
patent: 5081483 (1992-01-01), Ishimura et al.

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