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:
Jan. 08, 2019
Filed:
Feb. 19, 2015
Applicant:
Rambus Inc., Sunnyvale, CA (US);
Inventors:
Patrick R. Gill, Sunnyvale, CA (US);
David G. Stork, Portola Valley, CA (US);
Patrick R. Johnstone, Champaign, IL (US);
Assignee:
Rambus Inc., Sunnyvale, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/46 (2006.01); G06T 5/10 (2006.01); G02B 5/18 (2006.01); G02B 27/42 (2006.01); G02B 27/46 (2006.01); G06T 7/20 (2017.01);
U.S. Cl.
CPC ...
G06T 5/10 (2013.01); G02B 5/18 (2013.01); G02B 27/42 (2013.01); G02B 27/4205 (2013.01); G02B 27/46 (2013.01); G06T 7/2033 (2013.01); G06T 2207/10004 (2013.01);
Abstract
An optical method of measuring motion employs a phase grating that produces a diffraction pattern responsive to light from an imaged scene. First and second images of the diffraction pattern are captured and compared to produce an image comparison. Apparent motion is then calculated from the image comparison.