Power source connection controller and power source connection controlling method
AssigneeInternational Business Machines Corporation
InventorsKeiichi Azuma, Tsuneo Takahara
Life of this patent
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Abstract
To easily and quickly return from a power-off state, as well as reducing power consumption of an electrical apparatus by an automatic power-off, a power supply source connection controller 10 comprises: a power source connecting switch R0-2; a relay R0 for controlling the opening and closing of the switch R0-2; control switches SW1, SW2, and SW3 for sending a signal to a microcomputer 72 to provide instructions for executing a predetermined function, as well as connecting a power supply circuit 74 to the relay R0; a connection holding switch R0-1 for holding a connection between the relay R0 and the circuit 74; and a connection releasing switch SW0 for releasing a connection between the relay R0 and the circuit 74.
Claims12
A power source connection controller for an electrical apparatus, for automatically disconnecting a power source from an internal circuit of said apparatus, comprising:
- a power source connecting switch connected between said power source and said internal circuit;
- means for controlling opening and closing of said power source connecting switch, said controlling means being connected between said power source and said power source connecting switch;
- a first switch for inputting a signal to said internal circuit to provide instructions for executing a predetermined function provided for said electrical apparatus;
- and
- a second switch for causing said controlling means to close said power source connecting switch, said second switch being connected between said power source and said controlling means, said first and second switches operating jointly.
A power source connection controlling method for an electrical apparatus, which has the function of automatically disconnecting a power source from an internal circuit of said electrical apparatus, including the steps of:
- providing instructions for said internal circuit to execute a predetermined function provided for said electrical apparatus, while said power source is shut off;
- connecting said power source to said internal circuit in synchronization with said instruction to said internal circuit;
- and
- allowing said internal circuit to execute the predetermined function, upon connection of said power source to said internal circuit.
Dependencies are inferred from the claim text.