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:
Mar. 31, 2020
Filed:
Oct. 04, 2018
Parallel pipelines for computing backlight illumination fields in high dynamic range display devices
Applicant:
Nvidia Corporation, Santa Clara, CA (US);
Inventor:
Jens Roever, Los Gatos, CA (US);
Assignee:
Nvidia Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/02 (2006.01); G09G 3/34 (2006.01); G09G 3/20 (2006.01); G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
G09G 3/342 (2013.01); G09G 3/2096 (2013.01); G09G 3/36 (2013.01); G09G 2320/0252 (2013.01); G09G 2320/0646 (2013.01); G09G 2360/141 (2013.01); G09G 2360/145 (2013.01); G09G 2360/16 (2013.01);
Abstract
A display controller generates a backlight illumination field (BLIF) based on a coarse point-spread function (PSF) and a correction PSF. The display controller samples the coarse PSF to accumulate light contributions from a larger neighborhood of LEDs around a given LCD pixel. The display controller samples the correction PSF to generate correction factors for a smaller neighborhood of LEDs around the given LCD pixel. The display controller interpolates samples drawn from the coarse PSF and samples drawn from the correction PSF and then combines the interpolated samples to generate a full resolution BLIF.