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.:

US 9552654 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 24, 2017

Filed:

Feb. 11, 2014
Applicant:

Apple Inc., Cupertino, CA (US);

Inventor:

Ulrich T. Barnhoefer, Cupertino, CA (US);

Assignee:

Apple Inc., Cupertino, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06T 11/00 (2006.01); G09G 3/20 (2006.01); H04N 1/52 (2006.01); G09G 5/02 (2006.01);
U.S. Cl.
CPC ...
G06T 11/001 (2013.01); G09G 3/2003 (2013.01); G09G 3/2055 (2013.01); G09G 3/2074 (2013.01); H04N 1/52 (2013.01); G09G 5/02 (2013.01); G09G 2320/0242 (2013.01); G09G 2340/0414 (2013.01); G09G 2340/0421 (2013.01); G09G 2340/0428 (2013.01); G09G 2360/16 (2013.01);
Abstract

Embodiments include techniques that use color-shifting and luminance for creation and display of spatio-temporal dithered images. In one embodiment, adjacent pixels are color-shifted with respect to each other and the color values of the adjacent pixels are temporally alternated with color values of pixels in the group. In another embodiment, the luminance of group of adjacent pixels is determined and the luminance of the group is made more homogenous, spatially and temporally, by distributing color variations over a larger number of pixels so as to reduce the luminance difference between the pixel with the least luminance and the pixel with the greatest luminance. Individual color components (e.g., red, green, blue) may also be separated and used so that the color-shifts associated with each color component may be simultaneously present in different pixels.


Find Patent Forward Citations

Barnhoefer, Ulrich. (2017). Spatio-temporal color luminance dithering techniques (U.S. Patent No. 9552654). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9552654

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