Energy saving electronic device

Details Energy saving electronic device Energy saving electronic device

1998-06-23

2000-01-18

Adams, Russell

Photography

With power supply detail

Having time-out circuit

396301, G03B 726

Patent

active

060164077

ABSTRACT:
An electronic device has a plurality of prestored limit times that define a time period of non-use, after which the electronic device will enter an energy-saving state. A different one of the plurality of limit times can be selected for different operating modes of the electronic device. Thus, when the electronic device is switched between different modes, different limit times, which define the duration of the non-use period prior to entering the energy-saving state, will take effect. Additionally or alternatively, a different one of the plurality of limit times can be selected for different geographical conditions. Thus, when the electronic device is being used in a first geographical condition, for example, a place where batteries are readily available and inexpensive, the limit time is increased in order to improve the operability of the electronic device. Conversely, when the electronic device is used in a geographical condition where batteries are expensive and/or difficult to find, the limit time is decreased so as to conserve battery power. According to one embodiment, the invention is applied to an electronic camera to set different limit times for shutting off an LCD of the camera.

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