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 9304379 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 05, 2016

Filed:

Feb. 14, 2013
Applicant:

Rawles Llc, Wilmington, DE (US);

Inventors:

Eric Wang, Cupertino, CA (US);

Sankara Narayana Hemanth Meenakshisundaram, San Jose, CA (US);

Sanjukta Mitra, Santa Clara, CA (US);

Choudhary Omer Rafique, Campbell, CA (US);

Assignee:

Amazon Technologies, Inc., Seattle, WA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/00 (2006.01); G03B 21/14 (2006.01); G09G 3/22 (2006.01);
U.S. Cl.
CPC ...
G03B 21/142 (2013.01); G03B 21/14 (2013.01); G09G 3/22 (2013.01);
Abstract

In some examples, the intensity of an image projected onto a surface at an oblique angle may be controlled to equalize the intensity, and thereby to eliminate from the image perceptible variations in brightness. For instance, a first distance to a closer portion of the image and a second distance to a farther portion of the image may be used to determine an amount of change to be made to the intensity of at least one portion of the image. In some implementations, a filter may be used to control changes to the intensity of the image. In other implementations, the image information may be modified, such as on a pixel level, to control the intensity of the image.


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