Invention Grant
- Patent Title: System and method for information handling system display backlight protection and monitoring
- Patent Title (中): 信息处理系统和方法显示背光保护和监控
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Application No.: US12061830Application Date: 2008-04-03
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Publication No.: US07692912B2Publication Date: 2010-04-06
- Inventor: Greg R. Fiebrich , Erin L. Price , Guangyong Zhu
- Applicant: Greg R. Fiebrich , Erin L. Price , Guangyong Zhu
- Applicant Address: US TX Round Rock
- Assignee: Dell Products L.P.
- Current Assignee: Dell Products L.P.
- Current Assignee Address: US TX Round Rock
- Agency: Hamilton & Terrile, LLP
- Agent Robert W. Holland
- Main IPC: H02H3/08
- IPC: H02H3/08
Abstract:
A current limiting MOSFET monitors power applied to a direct current boost regulator that powers an LED backlight to automatically shut off power to the boost regulator if the current exceeds a predetermined amount. An embedded controller interfaces with the current limiting MOSFET for normal control of operation of the boost regulator by turning the MOSFET on and off. An overcurrent alert is communicated from the MOSFET to the embedded controller if the current exceeds the predetermined amount so that the embedded controller shuts off power to the boost regulator and indicates the failure to an end user.
Public/Granted literature
- US20090251837A1 System and Method for Information Handling System Display Backlight Protection and Monitoring Public/Granted day:2009-10-08
Information query
