Chris E Ward

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:

8556429, Oct 15, 2013

Filed:

Nov 28, 2011

Appl. No.:

13/305566

Inventors:

Michael Husak - Ceske Budejovice, CZ
Chris Ward - Kirkland WA, US
Robert Mueller - Kenmore WA, US
Joesph Lawrence - Seatac WA, US

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 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.

US Patent:

20170223345, Aug 3, 2017

Filed:

Apr 10, 2017

Appl. No.:

15/484100

Inventors:

- Bellevue WA, US
Chris Ward - Kirkland WA, US
Robert Mueller - Kenmore WA, US
Joesph D. Lawrence - Seatac WA, US

International Classification:

H04N 13/04
G03B 35/16

Abstract:

A video projection system and method for synchronizing images are provided. An image source provides a video signal with at least two streams of sequential images. A color switching device is operable to present fundamental colors and one or more non-fundamental colors at least once during each of a plurality of phases of the video signal. A light processing element controls projection of light with the two streams of sequential images sequentially through the presentation of the colors of each phase. An eye-switching adjustment element modifies a timing of the colors presented by aligning with the non-fundamental color, an unstable transition phase between different states of an eye-switching device to which the video signal is provided. The eye-switching adjustment element also modifies the video signal to deliver the images synchronously with the eye-switching device.

US Patent:

20140098203, Apr 10, 2014

Filed:

Oct 11, 2013

Appl. No.:

14/052672

Inventors:

- Bellevue WA, US
Chris Ward - Kirkland WA, US
Robert Mueller - Kenmore WA, US
Joesph D. Lawrence - Seatac WA, US

Assignee:

Lightspeed Design, Inc. - Bellevue WA

International Classification:

H04N 13/04

US Classification:

348 56, 348 55

Abstract:

A video controller for synchronizing presentation of a plurality of images is provided. A color switching device is operable to continually select a color out of a set consisting essentially of a plurality of fundamental colors. Each fundamental color is selected for presentation for a fixed time segment. A light processing element is operable to block and permit transmission of light in each color selected by the color switching device during each fixed time segment. The light includes at least two streams of sequential images. A synch signal generator is in control of the light processing element and is configured to time presentation of the light by the light processing element and of control signals to a viewing device of the display. The presentation of the light and of the control signals is timed in synchrony with the fixed time segments only during a transition state of the viewing device.