Invention Grant
- Patent Title: Dynamic backlight control system
- Patent Title (中): 动态背光控制系统
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Application No.: US11446469Application Date: 2006-06-02
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Publication No.: US07825891B2Publication Date: 2010-11-02
- Inventor: Wei Yao , Wei Chen
- Applicant: Wei Yao , Wei Chen
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Beyer Law Group LLP
- Main IPC: G09G3/36
- IPC: G09G3/36

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.
Public/Granted literature
- US20070279369A1 Dynamic backlight control system Public/Granted day:2007-12-06
Information query
IPC分类: