Compensation method and electronic device

Patent metadata

Field	Value
Publication number	US-11790819-B2
Application number	US-202017640649-A
Country	US
Kind code	B2
Filing date	Sep 4, 2020
Priority date	Sep 6, 2019
Publication date	Oct 17, 2023
Grant date	Oct 17, 2023

Abstract

A compensation method includes that an electronic device determines, based on statistical data of a first display and a first correspondence, a first actual value of a to-be-measured parameter of the first display at the end of a first statistical period; determines, based on statistical data of a second display and a second correspondence, a second actual value of a to-be-measured parameter of the second display at the end of the first statistical period; determines a compensation target value based on the first actual value and the second actual value when the first actual value is less than the second actual value; and writes the compensation target value into a first register configured to control the to-be-measured parameter of the first display, and writes the compensation target value into a second register configured to control the to-be-measured parameter of the second display.

First claim

What is claimed is:

1. A method implemented by an electronic device, wherein the method comprises:
determining, based on a first average use value of a first to-be-measured parameter of a first display in a first statistical period and based on a first correspondence, a first actual value of the first to-be-measured parameter at an end of the first statistical period, wherein the first display belongs to a foldable display of the electronic device, wherein the first average use value is an average value of the first to-be-measured parameter at a plurality of first time intervals within the first statistical period;
determining, based on a second average use value of a second to-be-measured parameter of a second display of the foldable display in the first statistical period and based on a second correspondence, a second actual value of the second to-be-measured parameter at the end of the first statistical period, wherein the second average use value is an average value of the second to-be-measured parameter at a plurality of second time intervals within the first statistical period, and wherein the correspondence is a correspondence relation established based on historic data between a plurality of average values of the first to-be-measured parameter and the second to-be-measured parameter calculated over respective time periods equal to the first statistical period and a plurality of respective actual values of the first to-be-measured parameter and the second to-be-measured parameter at respective ends of the time periods;
determining a compensation target value based on the first actual value and the second actual value when the first actual value is less than the second actual value; and
performing one of:
writing the compensation target value into a first register configured to control the first to-be-measured parameter and a second register configured to control the second to-be-measured parameter; or
writing the compensation target value into the first register and prolonging a working duration of the second display to make the second actual value consistent with the first actual value.

2. The method of claim 1 , wherein the first to-be-measured parameter is luminance, wherein the second to-be-measured parameter is luminance, and wherein the method further comprises:
determining a first current value corresponding to the compensation target value;
increasing a working current of the first display to the first current value; and
triggering, using the first current value, a driver integrated circuit (IC) of the first display to write the compensation target value into the first register.

3. The method of claim 1 , wherein the first to-be-measured parameter is luminance, wherein the second to-be-measured parameter is luminance, and wherein the method further comprises:
determining a second current value corresponding to the compensation target value;
decreasing a working current of the second display to the second current value; and
triggering, using the second current value, a driver integrated circuit (IC) of the second display to write the compensation target value into the second register.

4. The method of claim 1 , wherein the first to-be-measured parameter is luminance, wherein the second to-be-measured parameter is luminance, and wherein the method further comprises:
determining a first working duration for decreasing the second actual value to the compensation target value when luminance of the second display is set to a preset luminance; and
prolonging the working duration by the first working duration.

5. The method of claim 4 , wherein when the second display is in a screen-off state, the method further comprises:
turning on the second display; and
controlling the working duration in a screen-on state to be the first working duration.

6. The method of claim 5 , comprising:
detecting a device status of the electronic device, wherein the device status comprises a static state or a motion state;
identifying that the device status is the static state and the second display is in the screen-off state;
further turning on the second display and further controlling the working duration in the screen-on state to be the first working duration in response to identifying that the device status is the static state and the second display is in the screen-off state.

7. The method of claim 5 , comprising:
detecting a first ambient luminance of the electronic device;
detecting that a second ambient luminance of the second display is less than a preset threshold; and
further turning on the second display and further controlling the working duration in the screen-on state to be the first working duration in response to detecting that the second ambient luminance is less than the preset threshold.

8. The method of claim 5 , wherein before turning on the second display and controlling the working duration in the screen-on state to be the first working duration, the method further comprises:
collecting statistics on use time data of the second display used by a user of the electronic device;
determining, based on the use time data, a time segment in which the user does not use the second display; and
further turning on the second display and further controlling the working duration in the screen-on state to be the first working duration during the time segment.

9. The method of claim 5 , further comprising further turning on the second display and further controlling the luminance of the second display to be gradually increased based on a preset luminance interval.

10. The method of claim 1 , wherein the first to-be-measured parameter is a first gray scale, wherein the second to-be-measured parameter is a second gray scale, and wherein the method further comprises:
determining a first R component, a first G component, and a first B component corresponding to a first compensation target value of the first gray scale;
determining a second R component, a second G component, and a second B component corresponding to a second compensation target value of the second gray scale;
writing the first R component, the first G component, and the first B component into the first register; and
writing the second R component, the second G component, and the second B component into the second register.

11. The method of claim 1 , wherein a first display area of the first display is divided into N first areas, wherein a second display area of the second display is divided into N second areas, wherein N is a positive integer, and wherein the method further comprises:
determining, based on a third average use value of a third to-be-measured parameter of each of the N first areas in the first statistical period and the first correspondence, a third actual value of the third to-be-measured parameter at the end of the first statistical period;
determining, based on a fourth average use value of a fourth to-be-measured parameter of each of the N second areas in the first statistical period and the second correspondence, a fourth actual value of the fourth to-be-measured parameter at the end of the first statistical period; and
performing for each of the N first areas:
determining a second area that has a positional correspondence with a corresponding first area;
determining the compensation target value based on a fifth actual value of the corresponding first area and a sixth actual value of the second area; and
performing one of:
writing the compensation target value into a third register configured to control a fifth to-be-measured parameter of the corresponding first area and a fourth register configured to control a sixth to-be-measured parameter of the second area; or
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Assignees

• Huawei Tech Co Ltd

Inventors

• Hu Kai
• Hou Weibo
• Xiao Xiao

Classifications

• G09G3/035 Primary

  for flexible display surfaces · CPC title

• G09G3/32 Primary

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• G09G2320/0233

  Improving the luminance or brightness uniformity across the screen · CPC title

• G09G2320/046

  Dealing with screen burn-in prevention or compensation of the effects thereof · CPC title

• G09G3/3208

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