LIGHT EMITTING KEYBOARD MODULE AND POWER SAVING METHOD THEREOF

• US 20100079378A1
• Filed: 09/16/2009
• Published: 04/01/2010
• Est. Priority Date: 09/26/2008
• Status: Abandoned Application

• Current Assignee: Darfon Electronics Corporation
• Original Assignee: Darfon Electronics Corporation
• Inventors: Chiang, Chang-Chia
• Application Number:
  US12/560,555
• Publication Number:
  US 20100079378A1
• Time in Patent Office: Days
• US Class Current: 345/168
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/3271 Power saving in keyboard
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

A light emitting keyboard module including a light emitting keyboard and a control transmitting module is provided. The control transmitting module includes a transmitting unit, a timing unit, a comparing unit and a processing unit. The transmitting unit communicates with the light emitting keyboard by signals. The timing unit counts a stop time of the light emitting keyboard. The comparing unit compares the stop time with a predetermined time, and generates a comparing signal when the stop time is greater than the predetermined time. The processing unit drives the light emitting keyboard to enter a power saving mode after receiving the comparing signal.

Claims

1. A light emitting keyboard module, comprising:

a light emitting keyboard; and

a control transmitting module, comprising;

a transmitting unit used for communicating with the light emitting keyboard by signals;

a timing unit used for counting a first stop time of the light emitting keyboard;

a comparing unit used for comparing the first stop time with a first predetermined time and for generating a first comparing signal when the first stop time is greater than the first predetermined time; and

a processing unit used for driving the light emitting keyboard to enter a power saving mode after receiving the first comparing signal.

2. The light emitting keyboard module according to claim 1, wherein

the timing unit further counts a second stop time of an input device;

the comparing unit further compares the second stop time with a second predetermined time, and generates a second comparing signal when the second stop time is greater than the second predetermined time; and

the processing unit further drives the light emitting keyboard to enter the power saving mode after receiving the second comparing signal.

3. The light emitting keyboard module according to claim 2, wherein the input device is a mouse or a touch panel.

4. The light emitting keyboard module according to claim 1, wherein when the determining unit determines that the transmitting unit does not receive signals from the light emitting keyboard and an input device:

the timing unit further counts a second stop time of the input device in addition to counting the first stop time of the light emitting keyboard;

the comparing unit further compares the second stop time with the first predetermined time in addition to comparing the first stop time to the first predetermined time, and generates the first comparing signal when the second stop time is also greater than the first predetermined time; and

the processing unit drives the light emitting keyboard to enter the power saving mode after receiving the first comparing signal.

5. The light emitting keyboard module according to claim 1, wherein the processing unit further communicates with a computer by signals, and drives the light emitting keyboard to enter the power saving mode when the processing unit receives the signal indicating that a screen saver of the computer is activated.

6. The light emitting keyboard module according to claim 1, further comprising:

a wireless receiver connected to a computer, wherein the control transmitting module is disposed in the wireless receiver.

7. The light emitting keyboard module according to claim 1, wherein the light emitting keyboard has a wireless transmitter.

8. The light emitting keyboard module according to claim 1, wherein the control transmitting module is disposed in a computer.

9. A power saving method of a light emitting keyboard, wherein the method comprises:

a. detecting the states of a light emitting keyboard and an input device;

b. counting a first stop time of the light emitting keyboard before the light emitting keyboard outputs signals; and

c. comparing the first stop time with a first predetermined time, and further driving the light emitting keyboard to enter a power saving mode according to the state of the input device when the first stop time is greater than the first predetermined time.

10. The power saving method according to claim 9, wherein the step c comprises:

determining whether signals are received from the input device when the first stop time is greater than the first predetermined time;

counting a second stop time of the input device before the input device outputs signals; and

comparing the second stop time with a second predetermined time, and driving the light emitting keyboard to enter the power saving mode when the second stop time is greater than the second predetermined time.

11. The power saving method according to claim 9, wherein the step b further comprises counting a second stop time of the input device when the input device does not output signals either, and the step c further comprises:

comparing the first stop time with the first predetermined time, comparing the second stop time with the first predetermined time, and driving the light emitting keyboard to enter the power saving mode when the first stop time and the second stop time are both greater than the first predetermined time.

12. The power saving method according to claim 9, wherein the light emitting keyboard and the input device are connected to a computer, the step b comprises counting a second stop time of the input device when the input device does not output signals either, and the step c further comprises:

comparing the first stop time with the first predetermined time, comparing the second stop time with the first predetermined time, and detecting the state of the computer when the first stop time and the second stop time are both greater than the first predetermined time; and

determining whether a screen saver of the computer is activated;

if yes, driving the light emitting keyboard to enter the power saving mode.

13. A light emitting keyboard module, comprising:

a light emitting keyboard coupled to a computer; and

a processing unit used for determining whether a screen saver of the computer is activated;

if yes, driving the light emitting keyboard to enter a power saving mode.