Means for saving electrical power

Details Means for saving electrical power Means for saving electrical power

1998-07-16

2001-04-24

Beausoleil, Robert (Department: 2181)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

Reexamination Certificate

active

06223295

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a means for saving electrical power(II), more particularly, to a means with a directive device to control the microcontroller in a power down mode, thus reducing electrical power and prolonging the battery life.
BACKGROUND OF THE INVENTION
The electrical-power saving functions by microcontroller can be realized by following two ways. The first way is an idle mode, wherein the microcontroller is in an idle (without working) state while the devices connecting with the microcontroller (such as oscillators, counters, or serial interrupt unit) remain functioning. In this idle mode operation, the operating current for microcontroller is about 1 mA.
Another way for saving electrical-power is power down mode, wherein the oscillator and the microcontroller are both in off state. In this power-down mode, the operating current for microcontroller is below 10 uA.
The microcontroller is generally designed to switch from normal state to a power-saving state when the external devices connected to the microcontroller are idle for a specific period. At the power-saving state, the microcontroller is in an off state and can not function. The conventional device is designed to trigger the microcontroller to a workable state by a power switch. However, the operating current for the microcontroller triggered by the power switch is about 200~400 uA. The current consumption is excessively large.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a means with a directive device to control the microcontroller in a power down mode, thus reducing electrical power and prolonging the battery life.
To achieve above function, the present invention provides a means for saving electrical power (II) comprising a directive switch arranged within a wireless remote controller of tumbler configuration (with rounded bottom), by which the direction switch is kept upright or inclined with a specific angle when the remote controller not being used and the direction switch is swung to send a triggering signal to the micro-controller if the remote controller being used.


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