Luminescence shock avoidance in display devices
First Claim
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1. An electronic device, comprising:
- a display;
an ambient light sensor that detects an ambient light level while the display is off, wherein the display is at a zero brightness level while the display is off; and
control circuitry that increases a brightness of the display from the zero brightness level based on the detected ambient light level when the display is turned on.
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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.
42 Citations
20 Claims
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1. An electronic device, comprising:
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a display; an ambient light sensor that detects an ambient light level while the display is off, wherein the display is at a zero brightness level while the display is off; and control circuitry that increases a brightness of the display from the zero brightness level based on the detected ambient light level when the display is turned on. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of operating an electronic device having a display, the method comprising:
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with an ambient light sensor, producing ambient light data while the display is powered-down; and with control circuitry, activating the display by adjusting a brightness level of the display from a zero brightness level while the display is powered-down to a non-zero brightness level while the display is activated based on the ambient light data. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An electronic device, comprising:
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a display; a sensor that produces sensor data while the display is turned off; and control circuitry that measures an ambient light level based on the sensor data and turns the display on based on the ambient light level. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An electronic device, comprising:
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a display; an ambient light sensor that detects an ambient light level; and control circuitry that increases a brightness of the display from a zero brightness level based on a comparison between the detected ambient light level and a threshold.
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Specification