Methods and apparatus for driving discharge lamps
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United States of America Patent
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Apr 17, 2012
Grant Date -
Mar 25, 2010
app pub date -
Jul 27, 2009
filing date -
Sep 19, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatus for driving discharge lamps are disclosed herein. In one embodiment, a method for driving a discharge lamp includes generating a switching signal to drive a discharge lamp, monitoring a working status of the discharge lamp, and determining whether the discharge lamp is operating abnormally based at least in part on the monitored working status. The method also includes decreasing a duty cycle of the switching signal when the discharge lamp is determined to operate abnormally.
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