The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2010
Filed:
Nov. 19, 2007
James L. Fergason, Atherton, CA (US);
James L. Fergason, Atherton, CA (US);
Fergason Patent Properties, LLC, Menlo Park, CA (US);
Abstract
A display apparatus is disclosed comprising a passive display; a light source to provide illumination of the passive display; a video signal input, wherein in response to a video signal the passive display modulates light from the light source to provide an image, and wherein the intensity of light provided by the light source illuminating the display is controlled based on the video signal and wherein the passive display is capable of displaying a preset range of gray levels and presenting a displayed image in response to the video signal; and a control operable to expand a range of gray levels represented in the video signal across substantially all of preset range of gray levels.