US Patent No: 8,194,031
Number of patents in Portfolio can not be more than 2000
Backlight control of electronic device
Stats
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Jun 5, 2012
Issued date -
Oct 21, 2010
filing date -
12/909,536
serial no -
In Force
status
Importance
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Abstract
Embodiments are provided herein which may be utilized to eliminate stray light emissions from an LED while ambient light is being sensed. As such, dynamic backlight control systems for use with an electronic display are presented including: an ambient light sensor for sensing ambient light intensity; a backlight for illuminating the electronic display; a switch for controlling the backlight, the switch configured to set a backlight condition to ON or OFF in response to a backlight-off frequency such that the ambient light sensor senses the ambient light intensity in the absence of the backlight; a logic module for determining a backlight level in response to the ambient light intensity; and a backlight control circuit for adjusting the backlight to the backlight level in response to the ambient light intensity.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 6,762,741 Automatic brightness control system and method for a display device using a logarithmic sensor | 102 | 2000 | |
| 6,388,388 Brightness control system and method for a backlight display device using backlight efficiency | 57 | 2000 | |
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| 7,609,360 Image display device | 2 | 2003 | |
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| 6,841,947 Systems and methods for controlling brightness of an avionics display | 55 | 2002 | |
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| 5,915,120 Information processing apparatus having a power management system that dynamically changes operating conditions based upon dynamically selected user preferential order setting | 15 | 1997 | |
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| 2005/0134,547 Method and apparatus for characterizing and/or predicting display backlight response latency | 20 | 2003 | |
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| 2006/0132,424 Electronic device with optoelectronic input/output compensation function for a display | 6 | 2004 | |
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| 7,843,422 Apparatus and method for ambient light compensation for backlight control in small format displays | 1 | 2005 | |
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| 2006/0197,735 System and method for adjusting a backlight for a display for an electronic device | 8 | 2005 | |
Patent Citation Ranking
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