Calibration system and calibration method for display device

• US 9,460,687 B2
• Filed: 06/24/2014
• Issued: 10/04/2016
• Est. Priority Date: 06/25/2013
• Status: Active Grant

• Current Assignee: Xueshan Technologies Inc. (Wi-LAN Inc.)
• Original Assignee: MStar Semiconductor Incorporated (MediaTek, Inc.)
• Inventors: Chiu, Chih-Chiang, Lo, Chi-Hsien
• Primary Examiner(s): GIESY, ADAM
• Application Number:
  US14/313,137
• Publication Number:
  US 20140375563A1
• Time in Patent Office: 833 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G09G 2320/0673 for control of gamma adjustment, e.g. selecting another gamma curve
• CPC Class Codes: G09G 2320/0693 Calibration of display systems
• CPC Class Codes: G09G 5/08 Cursor circuits

Abstract

A calibration system for a display device is provided. The calibration system includes an image signal source, a user-motion sensing module, a control module, and a calibration interface. The image source drives the display device to display a reference image and an indication icon included in the reference image. The user-motion sensing module detects a user motion and generating a corresponding sensing result. The control module controls the image signal source to move the indication icon according to the sensing result. After selecting a region to be calibrated in the reference image by the indication icon through the user-motion sensing module, a user can adjust an image characteristic parameter of the display device that corresponds to the region to be calibrated through the calibration interface.

Claims

1. A calibration system for a display device, comprising:

an image signal source, coupled to the display device, configured to drive the display device to display a reference image and an indication icon in the reference image;

a user-motion sensing module, configured to detect a user motion and to generate a corresponding sensing result;

a control module, coupled to the user-motion sensing module and the image signal source, configured to control the image signal source to move the indication icon according to the sensing result; and

a calibration interface, which allows a user to adjust an image characteristic parameter of the display device corresponding to a region after the user selects the region in the reference image by the indication icon,

wherein the indication icon comprises a cursor;

the control module fills coordinate information of the cursor into a hardware cursor address buffer of the display device, fetches image information associated with the image characteristic parameter from a corresponding data buffer, and retrieves the image characteristic parameter according to the image information.

2. The calibration system according to claim 1, wherein the user-motion sensing module is a mouse, a touch pad or an on-screen display (OSD) indication controller.

3. The calibration system according to claim 1, wherein the user selects the region by clicking or by cropping through the user-motion sensing module.

4. The calibration system according to claim 1, wherein the region comprises one or a plurality of pixels.

5. The calibration system according to claim 1, wherein the image characteristic parameter is a gamma curve parameter.

6. The calibration system according to claim 1, wherein the control module controls the image signal source to display the image characteristic parameter in form of an OSD on the display device.

7. The calibration system according to claim 1, wherein the calibration interface comprises an input device.

8. A calibration method for a display device comprising:

a) providing an image signal that drives the display device to display a reference image and an indication icon in the reference image;

b) detecting a user motion and generating a corresponding sensing result;

c) controlling to move the indication icon according to the sensing result; and

d) providing a calibration interface, which allows a user to adjust an image characteristic parameter of the display device corresponding to a region after the user selects the region in the reference image by the indication icon,

the method further comprising;

filling coordinate information of the cursor into a hardware cursor address buffer of the display device;

fetching image information associated with the image characteristic parameter from a corresponding data buffer; and

retrieving the image characteristic parameter according to the image information.

9. The calibration method according to claim 8, wherein the region comprises one or a plurality of pixels.

10. The calibration method according to claim 8, wherein the image characteristic parameter is a gamma curve parameter.

11. The calibration method according to claim 8, further comprising:

controlling the image signal to display the image characteristic parameter in form of an OSD on the display device.