POWER SAVING APPARATUS AND METHOD FOR WIRELESS MOUSE
First Claim
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1. A wireless mouse characterized by power saving, comprising:
- an optical sensor module;
a power module;
a capacitive sensing device;
a capacitive tact switch, coupled to said capacitive sensing device;
a RF module; and
a host control circuit, wherein when capacitance or variation of the capacitance of said capacitive sensing device exceeds a predetermined value, said capacitive tact switch informs said host control circuit to enter an operation mode and turns on said optical sensing module and RF module;
if contrary, then the host control circuit enters a sleep mode and fully shuts down said optical sensing module and said RF module.
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Abstract
The invention mainly relates to a mouse with a capacitive tact switch incorporated thereto. When the user touches the mouse, the capacitive tact switch in the mouse will sense the proximity and inform the host control circuit immediately. Contrarily, when the user'"'"'s hand is leaving the mouse, the capacitive tact switch will inform the host control circuit to shut down completely the most power consuming parts such as RF module, CMOS sensor thereby the goal of power saving can be achieved.
23 Citations
16 Claims
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1. A wireless mouse characterized by power saving, comprising:
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an optical sensor module; a power module; a capacitive sensing device; a capacitive tact switch, coupled to said capacitive sensing device; a RF module; and a host control circuit, wherein when capacitance or variation of the capacitance of said capacitive sensing device exceeds a predetermined value, said capacitive tact switch informs said host control circuit to enter an operation mode and turns on said optical sensing module and RF module;
if contrary, then the host control circuit enters a sleep mode and fully shuts down said optical sensing module and said RF module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A power saving control method for a wireless mouse, said wireless mouse including a capacitive sensing switch, a host control circuit, and a power module, said method comprises the steps of the follows:
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(a) the capacitance or the variation of the capacitance of said capacitive sensing device exceeds a predetermined value? If no, said host control circuit keeps on working in a sleep mode;
if yes, go to the next step;(b) said host control circuit turns on said power module; (c) said host control circuit is operating in the operation mode; (d) the capacitance or the variation of the capacitance of said capacitive sensing device exceeds a predetermined value? If yes, said host control circuit keeps on working in a operation mode;
if no, go to the next step;(e) confirming if the user does not use the mouse, if no, goes to (c);
if yes, go to the next step;(f) entering the power saving mode, and shutting down the power module; and (g) said host control circuit operating in the sleep mode, entering (a).
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Specification