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:
May. 17, 2016
Filed:
Apr. 07, 2011
Applicants:
Bernhard Buettgen, Adliswil, CH;
Thierry Oggier, Zurich, CH;
Inventors:
Bernhard Buettgen, Adliswil, CH;
Thierry Oggier, Zurich, CH;
Assignee:
Heptagon Micro Optics Pte. Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 3/08 (2006.01); H05B 41/24 (2006.01); G01S 17/89 (2006.01); G01S 7/491 (2006.01); G01S 17/32 (2006.01); G01S 7/481 (2006.01);
U.S. Cl.
CPC ...
G01S 17/89 (2013.01); G01S 7/4815 (2013.01); G01S 7/4911 (2013.01); G01S 17/32 (2013.01);
Abstract
The modulation scheme disclosed in this invention report allows for utilizing multiple 3D time-of-flight cameras at the same time by exploiting the inherent pseudo noise properties of the optical modulation signals. Compared to recent systems based on pure pseudo noise modulation signals, the stochastic measurement error in a single-camera environment is significantly reduced. The basic concept relies on the generation of a three level optical modulation signal that includes two pseudo noise sequences.