Luminescence shock avoidance in display devices
First Claim
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1. A method, comprising:
- activating a display in an electronic device, wherein activating the display comprises;
with a sensor in the electronic device, detecting a current ambient light level at the display; and
after detecting the current ambient light level, increasing a brightness of the display to an initial brightness level that is at least partly based on the current ambient light level, wherein increasing the brightness of the display to the initial brightness level comprises, when the current ambient light level is below a threshold, limiting an initial brightness level of the display to the initial brightness level.
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Abstract
A luminescence shock avoidance algorithm selectively limits the brightness level of a display device when the display device is activated in a dark environment to prevent the temporary vision impairment that can occur when a display device is activated in a dark environment. The algorithm receives the state of the display (e.g. on or in standby mode), and can optionally receive an ambient lighting value from an ambient light sensor and a user-selectable manual brightness adjustment setting to determine whether luminescence shock avoidance should even be triggered, and if it is triggered, how much should the brightness level of the display be limited.
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Citations
11 Claims
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1. A method, comprising:
activating a display in an electronic device, wherein activating the display comprises; with a sensor in the electronic device, detecting a current ambient light level at the display; and after detecting the current ambient light level, increasing a brightness of the display to an initial brightness level that is at least partly based on the current ambient light level, wherein increasing the brightness of the display to the initial brightness level comprises, when the current ambient light level is below a threshold, limiting an initial brightness level of the display to the initial brightness level. - View Dependent Claims (2, 3)
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4. An electronic device, comprising:
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a display; an ambient light sensor; and circuitry coupled to the display and to the ambient light sensor, wherein the circuitry, prior to activating the display, uses the ambient light sensor to detect an ambient light level at the electronic device using the ambient light sensor and subsequently activates the display and adjusts the brightness of the display to an initial brightness level that is at least partially dependent upon the detected ambient light level, wherein activating the display comprises increasing the brightness of the display to the initial brightness level and limiting the initial brightness level to the initial brightness level when the ambient light level is below a threshold. - View Dependent Claims (5, 6, 7, 8)
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9. A method for avoiding luminescence shock in an electronic device having a display and an ambient light sensor, the method comprising:
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during normal operations of the electronic device, using a brightness function to determine an appropriate brightness level of the display, wherein the brightness function takes into account current ambient light levels as measured by the ambient light sensor; deactivating the display; and activating the display, wherein activating the display comprises; with the ambient light sensor, measuring the current ambient light level; if the current ambient light level is below a given threshold, limiting an initial brightness of the display to a given brightness level, wherein the given brightness level is lower than the appropriate brightness level as determined by the brightness function for the current ambient light level; and after a period of time, increasing a brightness of the display to the appropriate brightness level as determined by the brightness function for the current ambient light level. - View Dependent Claims (10, 11)
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Specification