Joseph R Lawrence

US Patent:

8066377, Nov 29, 2011

Filed:

Aug 28, 2006

Appl. No.:

11/511588

Inventors:

Michal Husak - Ceske Budejovice, CZ
Joseph D. Lawrence - Seatac WA, US
Robert Mueller - Kenmore WA, US
Chris Ward - Kirkland WA, US

Assignee:

Lightspeed Design, Inc. - Bellevue WA

International Classification:

G03B 21/00
H04N 13/04

US Classification:

353 7, 353 8, 348 56

Abstract:

A system and method for improving stereoscopic images produced by a projecting device containing a single chip DMD, seen through an eye-switching device, such as a pair of liquid crystal (LC) shutter glasses. The system and method are used with a video projector designed to be used with a multiple-color, color switching device, such as a color wheel. The color wheel includes at least three critical color segments. The color wheel may also physically include or be electronically re-defined to include at least one non-critical segment. A color sequencing firmware resident in the video projector is used to align a non-critical segment in front of the projector's main light source during the eye-switching device's unstable transition phase. If the non-critical segment is transmissive, the firmware controls the DMD so that light is discontinued. If the non-critical segment is non-transmissive, the light is physically blocked.

US Patent:

20120300047, Nov 29, 2012

Filed:

Nov 28, 2011

Appl. No.:

13/305566

Inventors:

Michal Husak - Ceske Budejovice, CZ
Joseph D. Lawrence - Seatac WA, US
Robert Mueller - Kenmore WA, US
Chris Ward - Kirkland WA, US

Assignee:

Lightspeed Design, Inc. - Bellevue WA

International Classification:

H04N 13/04

US Classification:

348 56, 348 51, 348E13075, 348E1304

Abstract:

A system and method for improving stereoscopic images produced by a projecting device containing a single chip DMD, seen through an eye-switching device, such as a pair of liquid crystal (LC) shutter glasses. The system and method are used with a video projector used with a multiple-color, color switching device The color switching device produces Blue, Red and Green lights and at least one non-critical segment. A color sequencing firmware resident in the video projector is used to align a non-critical segment in front of the projector's main light source during the eye-switching device's unstable transition phase. If the non-critical segment is transmissive, the firmware controls the DMD so light is discontinued. If the non-critical segment is non-transmissive, light is physically blocked. If the non-critical segment is electronically defined, the firmware directly controls the DMD to discontinue the transmission of light for the duration of device's unstable transition phase.