Color phase control for projection display using spatial light m

Details Color phase control for projection display using spatial light m Color phase control for projection display using spatial light m

1995-08-01

1997-08-12

Peng, John K.

Television

Video display

Color sequential

348742, 348744, 348756, 345200, H04N 912

Patent

active

056570996

ABSTRACT:
A SLM-based projection display system (10) samples and processes video data for delivery to a spatial light modulator (SLM) (13c), and uses a color wheel (14a) to color the SLM-generated images. A frame memory (13b) provides data to the SLM (13c) and is managed so that, if the phase of the incoming video signal changes, a desired phase relationship between the color wheel position and the data available to the SLM (13c) can be maintained. Also, a motor control unit (15a) uses a horizontal sync signal to generate a drive signal for the color wheel motor (16a), which limits the transient time during phase-changing events, and which provides a means for adjusting the phase of the drive signal.

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T.J. Dennis, Field-Sequential colour Television Receiver, Sep. 1971, 4 Pages.
T.J. Dennis, B.A., "Field-Sequential Colour Television Receiver", Wireless World, 9/1971, vol. 77, No. 1431, pp. 443-446.

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