Long-term history of display intensities

• US 10,410,568 B2
• Filed: 01/18/2018
• Issued: 09/10/2019
• Est. Priority Date: 06/04/2017
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Drzaic, Paul S., Thompson, Ross, Cote, Guy, Tann, Christopher P., Hauck, Jerrold V., Zhang, Yifan, Guillou, Jean-Pierre, Hendry, Ian C., Heppolette, Vanessa C., Koh, Tae-Wook, Spence, Arthur L.
• Primary Examiner(s): Bukowski, Kenneth
• Application Number:
  US15/874,816
• Publication Number:
  US 20180350289A1
• Time in Patent Office: 600 Days
• CPC Class Codes: G06F 3/0622 in relation to access
• CPC Class Codes: G06F 3/0623 in relation to content
• CPC Class Codes: G06F 3/0643 Management of files
• CPC Class Codes: G06F 3/0644 Management of space entities, e.g. partitions, extents, pools
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/0652 Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket
• CPC Class Codes: G06F 3/0656 Data buffering arrangements
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06F 3/0673 Single storage device
• CPC Class Codes: G06F 9/4401 Bootstrapping security arrangements therefor G06F21/57
• CPC Class Codes: G06F 9/451 Execution arrangements for user interfaces
• CPC Class Codes: G09G 2300/0847 being a dynamic memory without any storage capacitor, i.e. with use of parasitic capacitances as storage elements
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/0285 using tables for spatial correction of display data
• CPC Class Codes: G09G 2320/043 Preventing or counteracting the effects of ageing
• CPC Class Codes: G09G 2320/046 Dealing with screen burn-in prevention or compensation of the effects thereof
• CPC Class Codes: G09G 2320/048 using evaluation of the usage time
• CPC Class Codes: G09G 2320/066 for control of contrast
• CPC Class Codes: G09G 2330/026 Arrangements or methods related to booting a display
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 2358/00 : Arrangements for display data security
• CPC Class Codes: G09G 3/006 : Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309
• CPC Class Codes: G09G 3/2003 : Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/32 : semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 3/3208 : organic, e.g. using organic light-emitting diodes [OLED]

Abstract

A data processing system can store a long-term history of pixel luminance values in a secure memory and use those values to create burn-in compensation values that are used to mitigate burn-in effect on a display. The long-term history can be updated over time with new, accumulated pixel luminance values.

Claims

1. A non-transitory machine readable medium storing executable instructions which when executed by a data processing system cause the data processing system to perform a method comprising:

storing a long-term history which stores, for each pixel in a plurality of pixels in a display, a long-term display intensity;

generating, for each pixel, a compensation value based on the long-term display intensity for each pixel, the compensation value to mitigate a burn-in effect on the display;

generating a metric representing display usage based on the long-term history for at least a subset of the plurality of pixels in the display, the metric indicating a generalized long-term display intensity for at least a portion of the display;

storing the metric in a non-volatile storage, wherein the metric provides no spatially related information from which an image can be derived.

2. The medium as in claim 1 wherein the non-volatile storage is in a module that is separable from a main logic board that includes a system DRAM (dynamic random access memory) and an application processing system.

3. The medium as in claim 2 wherein the module is part of a display module that includes the display, and wherein the display module is configured to be coupled to a replacement main logic board if the main logic board is replaced.

4. The medium as in claim 3 wherein the non-volatile storage is readable for diagnostic evaluation when the main logic board is replaced.

5. The medium as in claim 4 wherein the non-volatile storage includes data or instructions for a touch input panel.

6. The medium as in claim 4 wherein the metric is generated in a secure processing system and is provided to storage outside of the secure processing system, the storage being readable for diagnostic evaluation.

7. The medium as in claim 6 wherein the metric is based on a subset of pixels which exceed a threshold of a long-term display intensity.

8. The medium as in claim 1 wherein the long-term history is stored in a secure memory in a secure processing system.

9. The medium as in claim 8 wherein the secure processing system generates the metric and transmits the metric to an application processing system which stores the metric in the non-volatile storage.

10. The medium as in claim 9 wherein the non-volatile storage is in a display module that is separable from a main logic board that includes a system DRAM and an application processing system, and the display module includes the display and is configured to be coupled to a replacement main logic board if the main logic board is replaced, and the non-volatile storage is readable for diagnostic evaluation when the main logic board is replaced.

11. A data processing system comprising:

a main logic board;

an application processing system disposed on the main logic board;

a DRAM memory coupled to the application processing system and disposed on the main logic board;

a secure processing system which includes secure memory, the secure processing system coupled to the application processing system and disposed on the main logic board;

a display module;

a display coupled to the application processing system and disposed on the display module;

a touch input panel disposed on the display module, the touch input panel coupled to the application processing system and coupled to non-volatile storage disposed on the display module;

the secure processing system configured to store a long-term history which stores, for each pixel in a plurality of pixels in the display, a long-term display intensity, and the secure processing system configured to generate, for each pixel, a compensation value based on the long-term display intensity, the compensation value to mitigate a burn-in effect on the display, and the secure processing system configured to generate a metric representing display usage based on the long-term history, the metric indicating a generalized long-term display intensity for at least a portion of the display and the metric being stored in the non-volatile storage disposed on the display module, and wherein the metric provides no spatially related information from which an image can be derived.

12. The system as in claim 11 wherein the display module is separable from the main logic board and is configured to be coupled to a replacement main logic board if the main logic board is replaced, and the non-volatile storage is readable for diagnostic evaluation when the main logic board is replaced.

13. A method comprising:

storing a long-term history which stores, for each pixel in a plurality of pixels in a display, a long-term display intensity;

generating, for each pixel, a compensation value based on the long-term display intensity for each pixel, the compensation value to mitigate a burn-in effect on the display;

generating a metric representing display usage based on the long-term history for at least a subset of the plurality of pixels in the display, the metric indicating a generalized long-term display intensity for at least a portion of the display;

storing the metric in a non-volatile storage, wherein the metric provides no spatially related information from which an image can be derived.

14. The method as in claim 13 wherein the non-volatile storage is in a module that is separable from a main logic board that includes a system DRAM (dynamic random access memory) and an application processing system.

15. The method as in claim 14 wherein the module is part of a display module that includes the display, and wherein the display module is configured to be coupled to a replacement main logic board if the main logic board is replaced.

16. The method as in claim 15 wherein the non-volatile storage is readable for diagnostic evaluation when the main logic board is replaced.

17. The method as in claim 16 wherein the non-volatile storage includes data or instructions for a touch input panel.

18. The method as in claim 17 wherein the metric is based on a subset of pixels which exceed a threshold of a long-term display intensity.

19. The method as in claim 13 wherein the long-term history is stored in a secure memory in a secure processing system and wherein the secure processing system generates the metric and transmits the metric to an application processing system which stores the metric in the non-volatile storage.

20. The method as in claim 19 wherein the non-volatile storage is in a display module that is separable from a main logic board that includes a system DRAM and an application processing system, and the display module includes the display and is configured to be coupled to a replacement main logic board if the main logic board is replaced, and the non-volatile storage is readable for diagnostic evaluation when the main logic board is replaced.

21. A non-transitory machine readable medium storing executable instructions which when executed by a data processing system cause the data processing system to perform a method comprising:

storing a long-term history which stores, for each pixel in a plurality of pixels in a display, a long-term display intensity;

generating a plurality of first region metrics for a corresponding plurality of first regions, each first region metric representing display usage based on the long-term history for pixels in a corresponding one of the first regions, the plurality of first regions spanning at least a first portion of the display;

transmitting the plurality of first region metrics to a developer of either software or hardware of the data processing system wherein each of the first region metrics provides no spatially related information from which an image can be derived, and wherein the long-term history is stored in a secure memory in a secure processing system.

22. The medium as in claim 21 wherein the transmitting is performed in response to a user of the data processing system providing permission to the developer to gather information about the data processing system, and wherein the plurality of first region metrics are anonymized and wherein the method further comprises:

generating, for each pixel in the plurality of pixels, a compensation value based on the long-term display intensity for each pixel, the compensation value to mitigate a burn-in effect on the display; and

wherein the developer uses the plurality of region metrics to develop future products or modifications to existing software.

23. The medium as in claim 21 wherein the method further comprises:

generating a plurality of second region metrics for a corresponding plurality of second regions, each second region metric representing display usage based on the long-term history for pixels in a corresponding one of the second regions, wherein at least one of the second regions overlaps at least partially with at least one of the first regions;

transmitting the plurality of second region metrics to the developer.