Wear compensation for a display

Patent metadata

Field	Value
Publication number	US-9870731-B2
Application number	US-201514750889-A
Country	US
Kind code	B2
Filing date	Jun 25, 2015
Priority date	Jun 25, 2015
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

Techniques for implementing aging compensation for a display are described. An example of an electronic device includes a display comprising pixels, each pixel comprising one or more Light Emitting Diodes (LEDs). The electronic device also includes a display aging compensation unit to receive input frame data corresponding to content to be displayed, adjust the input frame data to generate output frame data based on a degree of aging of the LEDs, and send the output frame data to the display. The electronic device also includes a display aging monitoring and compensation processing unit to accumulate aging data that describes the degree of aging of the LEDs. The aging data is to be accumulated by sampling the output frame data at a sampling rate that varies depending on a type of the content to be displayed.

First claim

What is claimed is:

1. An electronic device comprising:
a display comprising pixels, each pixel comprising one or more Light Emitting Diodes (LEDs);
a display aging compensation unit to receive input frame data corresponding to content to be displayed, adjust the input frame data to generate output frame data based on a degree of aging of the LEDs, and send the output frame data to the display; and
a display aging monitoring and compensation processing unit to accumulate aging data that describes the degree of aging of the LEDs, wherein the aging data is to be accumulated by sampling the output frame data at a variable sampling rate, wherein the variable sampling rate varies depending on whether the content to be displayed is static or dynamic, and wherein the variable sampling rate is equal to a refresh rate of the display if dynamic content is displayed and the variable sampling rate is equal to a multiple of the refresh rate of the display if static content is displayed.

2. The electronic device of claim 1 , wherein the display aging monitoring and compensation processing unit is to use a first sampling rate if the content to be displayed is dynamic and the display aging monitoring and compensation processing unit is to use a second sampling rate if the content to be displayed is static, wherein the second sampling rate is lower than the first sampling rate.

3. The electronic device of claim 1 , wherein the display aging compensation unit is included in a graphics processor, and the graphics processor determines the type of the content to be displayed based on a degree of change in the input frame data.

4. The electronic device of claim 1 , wherein the type of the content is to be identified by an application that is to generate the content, and the application is to send a corresponding content type identifier to the display aging monitoring and compensation processing unit, wherein the display aging monitoring and compensation processing unit determines the variable sampling rate based, at least in part, on the content type identifier.

5. The electronic device of claim 4 , wherein the application that is to generate the content sends a sampling rate identifier to the display aging monitoring and compensation processing unit, wherein the display aging monitoring and compensation processing unit is to sample the output frame data at the variable sampling rate identified by the sampling rate identifier.

6. The electronic device of claim 1 , wherein the variable sampling rate transitions from a dynamic sampling rate to an intermediate sampling rate, and remains at the intermediate sampling rate for a specified amount of time before transitioning to a static sampling rate.

7. The electronic device of claim 1 , wherein the variable sampling rate to be applied by the display aging monitoring and compensation processing unit is based, at least in part, on past user behavior.

8. The electronic device of claim 1 , wherein the LEDs are Organic LEDs (OLEDS).

9. The electronic device of claim 1 , wherein if the electronic enters a panel self-refresh mode, the aging data can be computed based on data received from a timing controller included in the display.

10. The electronic device of claim 1 , wherein the electronic device is a laptop computer.

11. A method, comprising:
receiving input frame data corresponding to content to be displayed on a display of an electronic device, the display comprising a plurality of Light Emitting Diodes (LEDs);
adjusting the input frame data to generate output frame data based on a degree of aging of the LEDs and sending the output frame data to the display;
determining a sampling rate based on whether the content to be displayed is static or dynamic, wherein the sampling rate is determined to be equal to a refresh rate of the display if the content to be displayed is dynamic and the sampling rate is determined to be equal to a multiple of the refresh rate of the display if the content to be displayed is static; and
accumulating aging data that describes the degree of aging of the LEDs by sampling the output frame data at the sampling rate.

12. The method of claim 11 , wherein determining the sampling rate comprises determining a first sampling rate if the content to be displayed is dynamic and determining a second sampling rate if the content to be displayed is static, wherein the second sampling rate is lower than the first sampling rate.

13. The method of claim 11 , comprising determining the type of the content to be displayed by analyzing the input frame data to identify a degree of change in the input frame data.

14. The method of claim 11 , comprising receiving a content type identifier from a source of the content to be displayed and determining the sampling rate based, at least in part, on the content type identifier.

15. The method of claim 14 , wherein the content type identifier identifies a type of content to be displayed on a first portion of the display, the method comprising receiving a second content type identifier from the source, the second content identifier identifying another type of content to be displayed on a second portion of the display.

16. The method of claim 14 , transitioning the sampling rate transitions from a dynamic sampling rate to an intermediate sampling rate, and remaining at the intermediate sampling rate for a specified amount of time before transitioning to a static sampling rate.

17. The method of claim 11 , comprising, if the electronic enters a panel self-refresh mode, computing the aging data based on data received from a timing controller included in the display.

18. A non-transitory computer-readable medium, comprising instructions to direct a processor to implement aging compensation for a display, the instructions to direct the processor to:
receive input frame data corresponding to content to be displayed on a display of an electronic device, the display comprising a plurality of Light Emitting Diodes (LEDs);
adjust the input frame data to generate output frame data based on a degree of aging of the LEDs and send the output frame data to the display;
determine a sampling rate based on whether the content to be displayed is static or dynamic, wherein the sampling rate is determined to be equal to a refresh rate of the display if the content to be displayed is dynamic and the sampling rate is determined to be equal to a multiple of the refresh rate of the display if the content to be displayed is static; and
sample the output frame data at the sampling rate to accumulate aging data that describes the degree of aging of the LEDs.

19. The non-transitory computer-readable medium of claim 18 , wherein the instructions to direct the processor to determine the sampling rate direct the processor to determine a first sampling rate if the content to be displayed is dynamic and determine a second sampling rate if the content to be displayed is static, wherein the second sampling rate is lower than the first sampling rate.

20. The non-transitory computer-readable medium of claim 18 , wherein the instructions direct the processor to analyze the input frame data to determine the type of the content to be displayed based on a degree of change in the input frame data.

21. The non-transitory computer-readable medium of claim 18 , wherein the instructions direct the processor to receive a content type identifier from a source of the content to be displayed and determine the sampling rate based, at least in part, on the content type identifier.

Assignees

• Intel Corp

Inventors

• Jiang Jun
• Zhuang Zhiming J

Classifications

• G09G2320/029

  by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel · CPC title

• G09G3/3208 Primary

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• G09G2320/048

  using evaluation of the usage time · CPC title

• G09G2320/103

  Detection of image changes, e.g. determination of an index representative of the image change · CPC title

• G09G2320/0285

  using tables for spatial correction of display data · CPC title