Method and system for digital light processing projection using pulsed lamps
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United States of America Patent
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Feb 12, 2013
Grant Date -
Mar 24, 2011
app pub date -
Sep 22, 2009
filing date -
Sep 22, 2009
priority date (Note) -
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Abstract
A method of operating an AC mercury lamp and DMD (Digital Micromirror Device) in a projection system, comprising receiving a periodic video frame pulse signal, switching the DMD between successive on and off states during each period of the frame pulse signal, wherein each off state results in a dark interval, and driving the lamp with a signal that is synchronized to the video frame pulse signal so as to alternate between a maintenance pulse level during at least a portion of the dark interval and a plateau level during the on state of the DMD.
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