Title:
【発明の名称】電源制御方式
Document Type and Number:
Japanese Patent JPS586964
Kind Code:
B2
Abstract:
A power throw circuit is provided within a keyboard-equipped apparatus such as an electronic calculator, an electronic timepiece etc. for determining whether a battery or batteries are connected between supply terminals therefor, whereby a power supply controller is not enabled to disconnect said power supply unless a power throw detection signal is developed from the power throw circuit. In response to the occurrence of the power throw detection signal from the power throw circuit power energy is automatically supplied from the power source to a power utilization circuit. In a preferred form, once the power utilization circuit has been enabled, and placed into the stable condition, the power throw detection circuit will no longer have any influence on the utilization circuit. In such stable conditions, the subsequent actuations of any key of a keyboard can control the power supply from the power source to the power utilization circuit. In another preferred form, the power throw circuit continuously provides the supply of power from the power source to the power utilization circuit without regard to the actuation of any key on the keyboard.
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Inventors:
TANAKA SHINICHI
MINEYAMA TAKIJI
MINEYAMA TAKIJI
Application Number:
JP3707877A
Publication Date:
February 07, 1983
Filing Date:
March 31, 1977
Export Citation:
Assignee:
SHARP KK
International Classes:
G06F1/32; G01R31/02; G01R31/36; G06F1/26; H02J1/00; H02J13/00; H03K17/22; H04B1/16; (IPC1-7): G06F1/00
Attorney, Agent or Firm:
Fukushi Aihiko