DAVID L ELLERTSON
Plumbers in Stoughton, MA
License number
Massachusetts 12315
Issued Date
Jul 26, 1995
Expiration Date
May 1, 2018
Type
Master Plumber
Address
Address
Stoughton, MA 02072
Personal information
See more information about DAVID L ELLERTSON at radaris.comName
Address
Phone
400 Park St, Stoughton, MA 02072
71 Summer Ave, Stoughton, MA 02072
Stoughton, MA
1800 Washington St, Stoughton, MA 02072
400 Park St, Stoughton, MA 02072
Professional information
See more information about DAVID L ELLERTSON at trustoria.com
Portable Microdisplay System
Portable Microdisplay System
US Patent:
2007001, Jan 25, 2007
Filed:
Jun 26, 2006
Appl. No.:
11/475567
Inventors:
Matthew Zavracky - Plympton MA, US
Frederick Herrmann - Ann Arbor MI, US
Wen-Foo Chern - Wayland MA, US
Alan Richard - Wrentham MA, US
Ronald Gale - Sharon MA, US
Jason Lo - Westboro MA, US
David Ellertson - Stoughton MA, US
Kuojinng Tsai - West Warwick RI, US
John Fan - Brookline MA, US
Stephen Pombo - Campbell CA, US
Rodney Bumgardner - Los Gatos CA, US
Frederick Herrmann - Ann Arbor MI, US
Wen-Foo Chern - Wayland MA, US
Alan Richard - Wrentham MA, US
Ronald Gale - Sharon MA, US
Jason Lo - Westboro MA, US
David Ellertson - Stoughton MA, US
Kuojinng Tsai - West Warwick RI, US
John Fan - Brookline MA, US
Stephen Pombo - Campbell CA, US
Rodney Bumgardner - Los Gatos CA, US
International Classification:
G09G 3/36
US Classification:
345087000
Abstract:
An active matrix color crystal display has an active matrix circuit, a counterelectrode panel and an interposed layer of liquid crystal. The active matrix display is located in a portable microdisplay system. The image is written to the the display therein causing the liquid crystal to move to a specific image position. A light source is flashed to illuminate the display. The pixel electrodes are set to a specific value to cause the liquid crystal to move towards a desired position. The process of writing, flashing, and setting the electrode intensity value to reorient the liquid crystal to produce an image is repeated. Portable system can include a digital camera, cellular telephone, camcorder, heads up display, instant print camera, pager,
Timing Of Fields Of Video
Timing Of Fields Of Video
US Patent:
6999057, Feb 14, 2006
Filed:
Feb 22, 2001
Appl. No.:
09/792285
Inventors:
Matthew M. Zavracky - Plympton MA, US
David L. Ellertson - Stoughton MA, US
David L. Ellertson - Stoughton MA, US
Assignee:
Kopin Corporation - Taunton MA
International Classification:
G09G 3/36, G09G 5/397, G09G 5/399, H04N 7/01, H04N 11/20
US Classification:
345100, 345540, 345546, 348446, 348448, 348454
Abstract:
An apparatus and method to delay a field of video by one row in a two field frame to reduce DC build-up or stick caused by textual image.