System and method for ambient light sensor testing for an information handling system display
AssigneeDell Products L.P.
InventorsJames E. Dailey, Vinod Makhija, Erin L. Price
Life of this patent
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Abstract
An ambient light sensor testing module running on an information handling system verifies that an ambient light sensor managing brightness of an information handling system display is active and responding correctly. The testing module sets the display at first and second manually-selectable brightness levels and compares the brightness set from the first and second manually-selectable brightness levels when the ambient light sensor is engaged to set display brightness. An excessive difference between the brightness set by the ambient light sensor from the first and second manually-selectable brightness levels indicates a faulty ambient light sensor.
Claims20
An information handling system comprising:
- a housing;
- plural processing components disposed in the housing and operable to generate visual information for presentation at a display;
- a display integrated with the housing and interfaced with the processing components, the display operable to present the visual information at plural manually-selectable brightness levels;
- an ambient light sensor interfaced with the display, the ambient light sensor operable to detect ambient light proximate the display and to automatically adjust the display brightness level in response to the detected ambient light;
- and
- a testing module interfaced with the display and the ambient light sensor, the testing module operable to test ambient light sensor automatic brightness adjustments by comparing the ambient light sensor brightness adjustment from a first manually-selectable brightness level to a first ambient light sensor brightness level with the ambient light sensor brightness adjustment from a second manually-selectable brightness level to a second ambient light sensor brightness level.
A method for testing an information handling system display ambient light sensor, the method comprising:
- setting display brightness at a first manually-selectable brightness level;
- engaging the ambient light sensor;
- determining a first brightness level set by the ambient light sensor;
- setting display brightness at a second manually-selectable brightness level;
- engaging the ambient light sensor;
- determining a second brightness level set by the ambient light sensor;
- and
- determining a difference between the first and second brightness levels set by the ambient light sensor.
A system for testing an ambient light sensor managing brightness of a display, the system comprising:
- a brightness selector operable to set the display brightness to first and second brightness settings;
- a brightness setting detector operable to detect the brightness set by the ambient light sensor;
- and
- a testing module interfaced with the brightness selector and the brightness setting detector, the testing module operable to compare the brightness set by the ambient light sensor after adjustment by the ambient light sensor from the first and second brightness levels.
Dependencies are inferred from the claim text.