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:
Oct. 17, 2017
Filed:
Dec. 31, 2014
Applicant:
Stmicroelectronics, Inc., Coppell, TX (US);
Inventors:
John Bloomfield, North Richland Hills, TX (US);
Kenneth Weiner, Denton, TX (US);
Assignee:
STMicroelectronics, Inc., Coppell, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 17/32 (2006.01); G01S 17/88 (2006.01); H01L 31/107 (2006.01); H01S 5/183 (2006.01); H01S 5/30 (2006.01); B65H 26/08 (2006.01); G01S 17/08 (2006.01); B65H 23/182 (2006.01); B65H 23/195 (2006.01);
U.S. Cl.
CPC ...
G01S 17/32 (2013.01); B65H 23/1825 (2013.01); B65H 23/1955 (2013.01); B65H 26/08 (2013.01); G01S 17/08 (2013.01); G01S 17/88 (2013.01); H01L 31/107 (2013.01); H01S 5/183 (2013.01); H01S 5/3013 (2013.01); B65H 2403/942 (2013.01); B65H 2511/142 (2013.01); B65H 2553/412 (2013.01); B65H 2557/512 (2013.01);
Abstract
A sensing device is for sensing an outer surface of a roll of material. An infrared (IR) laser source is configured to direct IR laser radiation to the outer surface of the roll of material. A single photon avalanche diode (SPAD) detector is configured to receive reflected IR laser radiation from the outer surface of the roll of material. A controller is coupled to the IR laser source and the SPAD detector to determine a distance to the outer surface of the roll of material based upon a time-of-flight of the IR laser radiation.