Method for adjusting display backlight with aid of ambient light brightness detection and time detection, and associated apparatus and associated computer program product
First Claim
1. A method for adjusting display backlight, the method being applied to an electronic device, the method comprising the steps of:
- utilizing at least one light sensor of the electronic device to detect ambient light brightness; and
controlling a brightness level of a backlight module of a display panel of the electronic device to automatically switch to be one of a plurality of predetermined levels of an automatic backlight mode in response to the ambient light brightness before the electronic device enters a low light mode, and performing a plurality of detection operations to selectively control the electronic device to enter the low light mode to adjust the brightness level of the backlight module of the display panel of the electronic device, wherein the plurality of detection operations comprises;
before the electronic device enters a suspend mode wherein the display panel is off, starting to count a time period when the ambient light brightness is less than a predetermined ambient brightness threshold value;
after the electronic device enters the suspend mode and then subsequently leaves the suspend mode so that the display panel turns on, performing an ambient light detection operation to detect whether the ambient light brightness is less than the predetermined ambient brightness threshold value; and
when the ambient light brightness in the ambient light detection operation is less than the predetermined ambient brightness threshold value, detecting the counted time period;
wherein when the counted time period reaches a predetermined time threshold value, the electronic device enters the low light mode.
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Accused Products
Abstract
A method and apparatus for adjusting display backlight and an associated computer program product are provided. The method is applied to an electronic device. The method includes the steps of: utilizing at least one light sensor of the electronic device to detect ambient light; and performing a plurality of detection operations to selectively control the electronic device to enter a specific mode to adjust brightness level of a backlight module of a display panel of the electronic device. The detection operations includes: detecting whether the ambient light is less than a predetermined ambient brightness threshold value for a time period; and detecting whether a length of the time period reaches a predetermined time threshold value. For example, the specific mode can be a low-light mode, which is suitable for a user who has stayed in the dark for a time period (e.g. tens of minutes, or one or more hours).
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Citations
17 Claims
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1. A method for adjusting display backlight, the method being applied to an electronic device, the method comprising the steps of:
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utilizing at least one light sensor of the electronic device to detect ambient light brightness; and controlling a brightness level of a backlight module of a display panel of the electronic device to automatically switch to be one of a plurality of predetermined levels of an automatic backlight mode in response to the ambient light brightness before the electronic device enters a low light mode, and performing a plurality of detection operations to selectively control the electronic device to enter the low light mode to adjust the brightness level of the backlight module of the display panel of the electronic device, wherein the plurality of detection operations comprises; before the electronic device enters a suspend mode wherein the display panel is off, starting to count a time period when the ambient light brightness is less than a predetermined ambient brightness threshold value; after the electronic device enters the suspend mode and then subsequently leaves the suspend mode so that the display panel turns on, performing an ambient light detection operation to detect whether the ambient light brightness is less than the predetermined ambient brightness threshold value; and when the ambient light brightness in the ambient light detection operation is less than the predetermined ambient brightness threshold value, detecting the counted time period; wherein when the counted time period reaches a predetermined time threshold value, the electronic device enters the low light mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for adjusting display backlight, the apparatus comprises at least one portion of an electronic device, the apparatus comprising:
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a display panel arranged to display information for the electronic device; at least one light sensor arranged to detect ambient light brightness for the electronic device; and a processing circuit, coupled to the display panel and the at least one light sensor, arranged to control operations of the electronic device, wherein the processing circuit controls a brightness level of a backlight module of the display panel to automatically switch to be one of a plurality of predetermined levels of an automatic backlight mode in response to the ambient light brightness before the electronic device enters a low light mode, wherein the processing circuit performs a plurality of detection operations to selectively control the electronic device to enter the low light mode to adjust the brightness level of the backlight module of the display panel, wherein the plurality of detection operations comprises; before the electronic device enters a suspend mode wherein the display panel is off, starting to count a time period when the ambient light brightness is less than a predetermined ambient brightness threshold value; after the electronic device enters the suspend mode and then subsequently leaves the suspend mode so that the display panel turns on, performing an ambient light detection operation to detect whether the ambient light brightness is less than the predetermined ambient brightness threshold value; and when the ambient light brightness in the ambient light detection operation is less than the predetermined ambient brightness threshold value, detecting the counted time period; wherein when the counted time period reaches a predetermined time threshold value, the electronic device enters the low light mode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A computer program product, having program instructions for instructing a processor of an electronic device to perform a method comprising the steps of:
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utilizing at least one light sensor of the electronic device to detect ambient light brightness; and controlling a brightness level of a backlight module of a display panel of the electronic device to automatically switch to be one of a plurality of predetermined levels of an automatic backlight mode in response to the ambient light brightness before the electronic device enters a low light mode, and performing a plurality of detection operations to selectively control the electronic device to enter the low light mode to adjust the brightness level of the backlight module of the display panel of the electronic device, wherein the plurality of detection operations comprises; before the electronic device enters a suspend mode wherein the display panel is off, starting to count a time period when the ambient light brightness is less than a predetermined ambient brightness threshold value; after the electronic device enters the suspend mode and then subsequently leaves the suspend mode so that the display panel turns on, performing an ambient light detection operation to detect whether the ambient light brightness is less than the predetermined ambient brightness threshold value; and when the ambient light brightness in the ambient light detection operation is less than the predetermined ambient brightness threshold value, detecting the counted time period; wherein when the counted time period reaches a predetermined time threshold value, the electronic device enters the low light mode.
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Specification