Wireless input device with low voltage mandatory alert function

• US 20060226999A1
• Filed: 04/11/2005
• Published: 10/12/2006
• Est. Priority Date: 07/19/2004
• Status: Active Grant

• Current Assignee: Behavior Tech Computer Corporation
• Original Assignee: Behavior Tech Computer Corporation
• Inventors: Wu, Yu-Hsi
• Granted Patent: US 7,304,584 B2
• Time in Patent Office: Days
• US Class Current: 340/663
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/325 Power saving in peripheral device

Abstract

The present invention relates to a wireless input device with a low voltage mandatory alert function, including: a battery for supplying power for the wireless input device; a microcontroller for handling the input signals of the wireless input device. The present invention is characterized in that the microcontroller is used for detecting the voltage of the battery; when the voltage is lowered to the lower limit voltage, the wireless input device can no longer operate.

Claims

1. A wireless input device with a low voltage mandatory alert function, said device comprising:

at least one battery for supplying power for said wireless input device;

a microcontroller for handling input signals from said wireless input device, and characterized in that said microcontroller is used for detecting the voltage of said battery, and when said voltage is lowered to a lower limit voltage, said wireless input device is unable to operate.

2. The wireless input device according to claim 1, wherein said microcontroller further requests said wireless input device to send a low voltage warning message.

3. The wireless input device according to claim 2, further including a warning unit electronically coupled to said microcontroller.

4. The wireless input device according to claim 3, wherein said warning unit is an LED, and wherein said low voltage warning message is a flickering light.

5. The wireless input device according to claim 1, wherein said microcontroller further outputs a message for remaining voltage.

6. The wireless input device according to claim 1, wherein said microcontroller includes an analog/digital signal converter, wherein said analog/digital signal converter is for detecting said voltage of said battery.

7. The wireless input device according to claim 1, wherein said microcontroller is a microcontroller with a hibernate mode, wherein when said microcontroller detects that said voltage of said battery is lowered to said lower limit voltage, said microcontroller is switched to said hibernate mode so as to prevent said wireless input device from operating.

8. The wireless input device according to claim 1, wherein when said microcontroller detects that said voltage of said battery is lowered to said lower limit voltage, said microcontroller requests an RF emitting module to switch off the function thereof, so as to prevent said wireless input device from operating.

9. The wireless input device according to claim 1, wherein said lower limit voltage is close to and slightly larger than the lowest working voltage of said microcontroller.

10. The wireless input device according to claim 1, wherein said lower limit voltage is close to and slightly larger than the lowest working voltage of the overall circuit of said wireless input device.

11. The wireless input device according to claim 1, wherein said wireless input device is a wireless keyboard.

12. The wireless input device according to claim 1, wherein said wireless input device is a wireless mouse.

13. The wireless input device according to claim 1, wherein said wireless input device is a wireless joystick.