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:
Apr. 02, 2019
Filed:
Apr. 20, 2017
Applicant:
Industry—academic Cooperation Foundation, Yonsei University, Seoul, KR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 1/44 (2006.01); H01L 31/107 (2006.01); H01L 27/146 (2006.01); H01L 31/02 (2006.01);
U.S. Cl.
CPC ...
H01L 31/107 (2013.01); H01L 27/14643 (2013.01); H01L 31/02027 (2013.01); G01J 2001/442 (2013.01); G01J 2001/4466 (2013.01);
Abstract
Disclosed is an apparatus for counting single photons including an edge combiner configured to detect an edge of each of applied clocks using a plurality of Phase-Locked Loops (PLL) to generate a combined signal; a sampling unit configured to sample all events occurring in each SPAD of a single photon detection diode (SPAD) array using an OR tree and an XOR tree; and a calculation unit configured to count the sampled events based on the combined signal to count single photons.