PULSE WIDTH MODULATED DISPLAY WITH IMPROVED MOTION APPEARANCE

Title:

PULSE WIDTH MODULATED DISPLAY WITH IMPROVED MOTION APPEARANCE

Document Type and Number:

WIPO Patent Application WO2004015493

Kind Code:

A3

Abstract:

A field sequential pulse width modulated display system (10) comprises a digital micromirror device (DMD) (24) having a plurality of micromirrors that each selectively pivot to reflect light onto a screen (28) to illuminate a corresponding pixel. A driver circuit (30) controls the DMD (24) responsive to sequences of pulse width segments formed by a processor (31). The processor (31) forms the pulse width segment sequences to alter the pixel brightness for a given one of a set of primary colors within a range of brightness values between adjacent pixel brightness boundaries, with each segment for each color interleaved with the segments for the other colors.

Inventors:

WILLIS DONALD HENRY (US)

Application Number:

PCT/US2003/025138

Publication Date:

May 06, 2004

Filing Date:

August 11, 2003

Export Citation:

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Assignee:

THOMSON LICENSING SA (FR)
WILLIS DONALD HENRY (US)

International Classes:

G09G3/20; G09G3/30; G09G3/34; G09G5/02; G09G5/10; H04N9/12; G03B; (IPC1-7): G09G3/30; G09G3/34; G09G5/10; G09G5/02; H04N9/12

Foreign References:

US6362835B1	2002-03-26
US5774196A	1998-06-30

Other References: