Display system and driving method thereof

• US 8,102,341 B2
• Filed: 12/17/2008
• Issued: 01/24/2012
• Est. Priority Date: 12/17/2008
• Status: Active Grant

• Current Assignee: Getac Technology Company Limited (MiTAC Holdings Corp.)
• Original Assignee: Getac Technology Company Limited (MiTAC Holdings Corp.)
• Inventors: Shen, Chang-Han
• Primary Examiner(s): Chow, Van
• Application Number:
  US12/337,492
• Publication Number:
  US 20100149081A1
• Time in Patent Office: 1,133 Days
• Field of Search: None
• US Class Current: 345/88
• CPC Class Codes: G09G 2320/0238 Improving the black level
• CPC Class Codes: G09G 2340/14 Solving problems related to the presentation of information to be displayed
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

A display system and driving method thereof are capable of outputting a low luminance of red light, especially through descending a color level of red signals when displayed. The display system includes a display device and an image processing device. The image processing device outputs the red signals to the display device for displaying thereon. The color level of red signals is descended by a display chip or a switch device to allow the display device to display images with low luminance of red light, so that the display device is viewable through a night-vision device.

Claims

1. A display system, comprising:

a display device;

a main circuit device outputting image signals including red, green and blue input data; and

an image processing device comprising;

a display chip receiving the image signals from the main circuit device and outputting red, green and blue output data; and

;

a signal transmission tunnel, receiving the red, green and blue output data from the display chip and outputting red, green and blue signals to the display device;

wherein the image processing device is configured such that upon receipt of a trigger signal, a color level of the red signal is decreased so that the display device displays with a decreased color level of red light, and wherein only the color level of the red signal is decreased.

2. The display system as claimed in claim 1, wherein the display chip performs Gamma transformation to decrease the color level of the red signal.

3. The display system as claimed in claim 2, wherein the display chip decreases the color level of the red signal to zero (0) upon receipt of the trigger signal by the image processing device.

4. The display system as claimed in claim 2, wherein the display chip decreases the color level of the red signal to a preset ratio upon receipt of the trigger signal by the image processing device.

5. The display system as claimed in claim 2 further comprising a software module to drive the display chip for operation of decreasing the color level of the red signal.

6. The display system as claimed in claim 1, wherein the image processing device comprises:

a switch device, electrically connected between the display device and the output of the red signal from the signal transmission tunnel,

configured such that upon receipt of the trigger signal by the image processing device, the switch device cuts off the output of the red signal between the signal transmission tunnel and the display device.

7. The display system as claimed in claim 6 further comprising a second software module or a controller to drive the switch device to cut off the output of the red signal.

8. The display system as claimed in claim 1, wherein the signal transmission tunnel comprising a transistor-transistor-logic (TTL) or a low voltage differential signaling (LVDS).

9. The display system as claimed in claim 1 further comprising a special-mode activator that generates the trigger signal when the special-mode activator is initiated, so that the images displayed on the display device is viewable through a night-vision device without oversaturation of red light.

10. The display system as claimed in claim 1, wherein the signal transmission tunnel comprises a color management chip, configured such that upon receipt of the trigger signal by the image processing device, the color management chip performs Gamma transformation to decrease the color level of the red signal.

11. A method for driving a display system, the display system including a display device, an main circuit device, and a image processing device, the method comprising the steps of:

outputting image signals including red, green and blue input data by the main circuit device;

receiving the image signals by the image processing device;

processing the image signals by the image processing device to generate red, green and blue signals;

outputting red, green and blue signals from the image processing device to the display via a signal transmission tunnel;

on receipt of a trigger signal by the image processing device, decreasing a color level of the red signal, wherein only the color level of the red signal is decreased.

12. The method as claimed in claim 11, wherein the image processing device comprises a display chip that performs Gamma transformation to decrease the color level of the red signal on receipt of the trigger signal by the image processing device.

13. The method as claimed in claim 12, wherein the display chip decreases the color level of the red signal to zero (0) on receipt of the trigger signal by the image processing device.

14. The method as claimed in claim 12, wherein the display chip descends the color level of the red signal to a preset ratio on receipt of the trigger signal by the image processing device.

15. The method as claimed in claim 11, wherein the display system further comprises a switch device electrically connected between the display device and the signal transmission tunnel for the red signal, the switch device cutting off the output for the red signal between the signal transmission tunnel and the display device according to the trigger signal.

16. The method as claimed in claim 11, wherein the trigger signal is generated by a special-mode activator so that the images displayed on the display device is viewable through a night-vision device without oversaturation of red light.

17. The method as claimed in claim 11, wherein the signal transmission tunnel comprises a color management chip, and upon receipt of the trigger signal by the image processing device, the color management chip performs Gamma transformation to decrease the color level of the red signal.