Electronic device with optoelectronic input/output compensation function for a display
AssigneeMotorola Mobility LLC
InventorsKen Foo, Zhiming Zhuang
Life of this patent
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Abstract
Portable devices (100) that include displays (102) and are used in widely ranging ambient light conditions use selectable or adjustable optoelectronic input/output compensation functions to drive their displays. According to certain embodiments, a camera (122) or a light sensor (120) is used to measure the ambient light level, and an optoelectronic input/output compensation function that is specifically chosen based on the measured ambient light condition is used to drive the display. Furthermore, according to certain embodiments, the optoelectronic input/output compensation function is selected based on whether a display backlight (230) is turned on or off.
Claims21
An electronic device comprising:
- a display;
- a light sensor for measuring an ambient light level and outputting a light level signal;
- and
- an electronic circuit coupled to said display and said light sensor, wherein said electronic circuit is adapted to receive said light level signal and to select an optoelectronic input/output compensation function that is used in driving said display based, at least in part, on said light level signal, and drive said display using said optoelectronic input/output compensation function.
A method of operating an electronic device comprising:
- obtaining a measure of an ambient light level;
- selecting an optoelectronic input/output compensation function as a function of the measure of the ambient light level;
- and
- using the optoelectronic input/output compensation function to drive a display.
An electronic device comprising:
- a display;
- a backlight optically coupled to said display;
- and
- an electronic circuit coupled to said display and to said backlight, wherein said electronic circuit is adapted to selectively power said backlight, and to select an optoelectronic input/output compensation function to be used in driving said display based, at least in part, on whether said backlight is being powered.
A method of operating an electronic device comprising:
- selectively operating a backlight of a display;
- selecting an optoelectronic input/output compensation function based, at least in part, on whether said backlight is being operated;
- and
- driving said display to display information using said optoelectronic input/output compensation function.
An electronic device comprising:
- a transflective display;
- a display driver coupled to said transflective display;
- a backlight optically coupled to said transflective display;
- a backlight driver coupled to said backlight an ambient light sensor;
- a processor coupled to said display driver and to said ambient light sensor, wherein said processor is programmed to:
- read said ambient light sensor to obtain a measure of an ambient light level;
- and
- based on said measure of said ambient light level, select an optoelectronic input/output compensation function and configure said display driver to effect said optoelectronic input/output compensation function.
Dependencies are inferred from the claim text.