Sequential color display system with spoke synchronous frame rate conversion
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United States of America Patent
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Dec 14, 1999
Grant Date -
N/A
app pub date -
Jun 6, 1996
filing date -
Jun 8, 1995
priority date (Note) -
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Abstract
A sequential color display system (10) suited to receive data (20) at different rates without discarding or filtering video data. The mismatch of bandwidths between the input source video data and the output sequential color display is accommodated by retaining a modified synchronous operation. A color wheel (50) having a plurality of segments is utilized whereby the input frame rate in reference to the color wheel rate is always a ratio of integers. Using a digital micromirror device (44) spatial light modulator, no mixing of frame-to-frame bit planes is required during a colored segment. In the preferred embodiment, the ratio of integers is 7-to-6 for a 50 hertz input, such as a PAL system, or a 5-to-6 ratio for a 72 hertz input. The color wheel is maintained at about a 60 hertz rate.
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