Methods and devices for adjusting screen brightness

Patent metadata

Field	Value
Publication number	US-2018090104-A1
Application number	US-201715683109-A
Country	US
Kind code	A1
Filing date	Aug 22, 2017
Priority date	Sep 29, 2016
Publication date	Mar 29, 2018
Grant date	—

Abstract

Methods and apparatuses are provided for adjusting screen brightness. The method may include: determining a screen brightness adjusting curve corresponding to current time, and determining current screen brightness according to current ambient luminance and the screen brightness adjusting curve. With the technical solutions provided in the present disclosure, the screen brightness can be adjusted to be most suitable for human eyes according to time; the problem of unsatisfactory screen brightness caused by adjusting a screen into same brightness according to same ambient brightness in different time periods is avoided.

First claim

What is claimed is:

1 . A method for adjusting screen brightness, comprising:
determining, by a device comprising a processor and a screen, a screen brightness adjusting curve corresponding to a current time; and determining, by the device, current screen brightness of the screen according to a current ambient luminance and the screen brightness adjusting curve.

2 . The method according to claim 1 , wherein determining the screen brightness adjusting curve corresponding to the current time comprises:
determining a time period corresponding to the current time; and determining the screen brightness adjusting curve corresponding to the time period of the current time.

3 . The method according to claim 2 , wherein determining a time period corresponding to the current time comprises:
obtaining a current geographic position of the device; determining a first preset time and a second preset time corresponding to the current geographic position, wherein the first preset time is sunrise time and the second preset time is sunset time; and determining the time period corresponding to the current time according to an earlier or later relationship among the current time, the first preset time and the second preset time.

4 . The method according to claim 3 , wherein determining the first preset time and the second preset time comprises:
determining current geographic environment; and performing a weighting adjustment to the first preset time and the second preset time determined by the current geographic position according to the current geographic environment, and obtaining adjusted first preset time and adjusted second preset time.

5 . The method according to claim 2 , wherein determining the time period corresponding to the current time comprises:
determining the time period corresponding to the current time by determining whether a time duration that a display has been in a preset state exceeds a preset time period, wherein the preset state is an off screen state.

6 . The method according to claim 1 , wherein after determining current screen brightness according to the current ambient luminance and the screen brightness adjusting curve, further comprises:
obtaining meteorological data of a current geographic position; and based on the meteorological data of the current geographic position, performing a weighting adjustment to the current screen brightness determined according to the current ambient luminance and the screen brightness adjusting curve, and obtaining adjusted screen brightness.

7 . The method according to claim 1 , further comprising:
determining whether an operation of setting a screen brightness adjusting mode is detected; and when the operation of setting a screen brightness adjusting mode is detected, adjusting the screen brightness according to a screen brightness adjusting curve corresponding to the set screen brightness adjusting mode.

8 . The method according to claim 1 , further comprising:
counting the screen brightness adjusted by a user during different time periods and in different ambient luminance; and determining screen brightness adjusting curves in different time periods according to the counted screen brightness adjusted by the user during different time periods and in different ambient luminance.

9 . A device for adjusting screen brightness, comprising:
a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to: determine a screen brightness adjusting curve corresponding to current time, and determine a current screen brightness according to a current ambient luminance and the screen brightness adjusting curve.

10 . The device according to claim 9 , wherein the processor is configured to determine a screen brightness adjusting curve corresponding to current time by acts of:
determining a time period corresponding to the current time; and determining a screen brightness adjusting curve corresponding to the time period of the current time.

11 . The device according to claim 10 , wherein the processor is configured to determine a time period corresponding to the current time by acts of:
obtaining a current geographic position of the device; and determining first preset time and second preset time corresponding to the current geographic position, wherein the first preset time is sunrise time and the second preset time is sunset time; determining the time period corresponding to the current time according to an earlier or later relationship among the current time, the first preset time and the second preset time.

12 . The device according to claim 11 , wherein the processor is configured to determine first preset time and second preset time by acts of:
determining current geographic environment; and performing a weighting adjustment to the first preset time and the second preset time determined by the current geographic position according to the current geographic environment, and obtaining adjusted first preset time and adjusted second preset time.

13 . The device according to claim 10 , wherein the processor is configured to determine a time period corresponding to the current time by an act of:
determining the time period corresponding to the current time by determining whether a time duration that a display has been in a preset state exceeds a preset time period, wherein the preset state is an off screen state.

14 . The device according to claim 9 , wherein after determining current screen brightness according to current ambient luminance and the screen brightness adjusting curve, the processor is further configured to:
obtain meteorological data of a current geographic position; and based on the meteorological data of the current geographic position, perform a weighting adjustment to the current screen brightness determined according to the current ambient luminance and the screen brightness adjusting curve, and obtaining adjusted screen brightness.

15 . The device according to claim 9 , wherein the processor is further configured to:
determine whether an operation of setting a screen brightness adjusting mode is detected; and when the operation of setting a screen brightness adjusting mode is detected, adjust the screen brightness according to a screen brightness adjusting curve corresponding to the set screen brightness adjusting mode.

16 . The device according to claim 9 , wherein the processor is further configured to:
count the screen brightness adjusted by a user during different time periods and in different ambient luminance; and determine screen brightness adjusting curves in different time periods according to the counted screen brightness adjusted by the user during different time periods and in different ambient luminance.

17 . A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a device, causes the device to perform a method for adjusting screen brightness, the method comprising:
determining a screen brightness adjusting curve corresponding to current time; and determining current screen brightness according to current ambient luminance and the screen brightness adjusting curve.

18 . The non-transitory computer-readable storage medium according to claim 17 , wherein determining a screen brightness adjusting curve corresponding to current time comprises:
determining a time period corresponding to the current time; and determining a screen brightness adjusting curve corresponding to the time period o

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Song Kailun
• Wan Yuzhen
• Zhao Jiankai

Classifications

• G09G5/10 Primary

  Intensity circuits · CPC title

• G09G2320/0233

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

• G09G2360/144

  the light being ambient light · CPC title

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title