Power Supply System and Related Power Management Method for a Wireless Control Device

• US 20080150364A1
• Filed: 09/11/2007
• Published: 06/26/2008
• Est. Priority Date: 12/21/2006
• Status: Abandoned Application

• Current Assignee: Wistron Corporation
• Original Assignee: Wistron Corporation
• Inventors: Chen, Chih-Hung, Chen, Chia-Hung
• Application Number:
  US11/853,803
• Publication Number:
  US 20080150364A1
• Time in Patent Office: Days
• US Class Current: 307/65
• CPC Class Codes: H02J 1/10 Parallel operation of dc sources
• CPC Class Codes: H02J 7/00304 Overcurrent protection

Abstract

A power supply system for a wireless control device includes a plurality of power generation units for generating electric power, a power output unit coupled to the plurality of power generation units and a system circuit of the wireless control device for outputting electric power generated by the plurality of power generation units to the system circuit, and a microprocessor coupled to the plurality of power generation units for controlling the plurality of power generation units.

Claims

1. A power supply system for a wireless control device comprising:

a plurality of power generation units for generating power;

a power output unit coupled to the plurality of power generation units and a system circuit of the wireless control device for outputting power generated by the plurality of power generation units to the system circuit; and

a microprocessor coupled to the plurality of power generation units for controlling the plurality of power generation units.

2. The power supply system of claim 1, wherein a power generation unit of the plurality of power generation units is a mechanical energy transformation unit for transforming mechanical energy into electric power.

3. The power supply system of claim 1, wherein a power generation unit of the plurality of power generation units is an optical energy transformation unit for transforming optical energy into electric power.

4. The power supply system of claim 1, wherein the power output unit further comprises:

a charger for charging a battery of the system circuit; and

a protection circuit coupled between the plurality of power generation units and the charger for conducting power generated by a power generation unit of the plurality of power generation units to the charger.

5. The power supply system of claim 4, wherein the protection circuit comprises a plurality of diodes each coupled between a power generation unit of the plurality of power generation units and the charger.

6. The power supply system of claim 1 further comprising a power detection unit coupled between the microprocessor and the system circuit for detecting power of the system circuit and transmitting a detection result to the microprocessor.

7. The power supply system of claim 6 further comprising an alarm unit coupled to the power detection unit for outputting an alarm signal when the detection result of the power detection unit indicates that power supply of the system circuit is insufficient.

8. The power supply system of claim 1, wherein the wireless control device is a wireless mouse.

9. The power supply system of claim 1, wherein the wireless control device is a wireless keyboard.

10. The power supply system of claim 1, wherein the wireless control device is a personal digital assistant (PDA).

11. A power management method for a power supply system, the power supply system comprising a plurality of power generation units for generating power to a system circuit, the power management method comprising:

detecting a power supply state of the system circuit; and

activating a power generation unit of the plurality of power generation units to generate power to the system circuit when power supply of the system circuit is insufficient.

12. The power management method of claim 11, wherein activating the power generation unit of the plurality of power generation units to generate power to the system circuit when the power supply of the system circuit is insufficient is selecting the power generation unit from the plurality of power generation units to generate power according to a current power generation condition when the power supply of the system circuit is insufficient.

13. The power management method of claim 12, wherein the current power generation condition is set according to parameters of surrounding environment.

14. The power management method of claim 13, wherein the current power generation condition is set according to brightness of surrounding environment.

15. The power management method of claim 11 further comprising generating an alarm signal for indicating that the power supply of the system circuit is insufficient.

16. The power management method of claim 14, wherein activating the power generation unit of the plurality of power generation units to generate power to the system circuit when the power supply of the system circuit is insufficient is activating an optical energy transformation unit to generate power when the power supply of the system circuit is insufficient while the surrounding light is sufficient.

17. The power management method of claim 14, wherein activating the power generation unit of the plurality of power generation units to generate power to the system circuit when the power supply of the system circuit is insufficient is activating a mechanical energy transformation unit to generate power when the power supply of the system circuit and the surrounding light are insufficient.

18. A wireless mouse with power control comprising:

a system circuit for controlling a computer system through radio frequency; and

a power supply comprising;

a plurality of power generation units for generating electric power;

a power output unit coupled to the plurality of power generation units and the system circuit for outputting electric power generated by the plurality of power generation units to the system circuit; and

a microprocessor coupled to the plurality of power generation units for controlling the plurality of power generation units.

19. The wireless mouse of claim 18, wherein a power generation unit of the plurality of power generation units is a mechanical energy transformation unit for transforming mechanical energy generated by a scroll wheel into electric power.

20. The wireless mouse of claim 18, wherein a power generation unit of the plurality of power generation units is an optical energy transformation unit for transforming optical energy into electric power.

21. The wireless mouse of claim 18, wherein the power output unit comprises:

a charger for charging a battery of the system circuit; and

a protection circuit coupled between the plurality of power generation units and the charger for conducting power generated by a power generation unit of the plurality of power generation units to the charger.

22. The wireless mouse of claim 18, wherein the protection circuit comprises a plurality of diodes each coupled between a power generation unit of the plurality of power generation units and the charger.

23. The wireless mouse of claim 18 further comprising a power detection unit coupled between the microprocessor and the system circuit for detecting power of the system circuit and transmitting a detection result to the microprocessor.

24. The wireless mouse of claim 23 further comprising an alarm unit coupled to the power detection unit for outputting an alarm signal when the detection result of the power detection unit indicates that power supply of the system circuit is insufficient.

25. The wireless mouse of claim 18 further comprising a data access unit coupled to the system circuit for wirelessly accessing data of the computer system.