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:
Feb. 04, 2025
Filed:
Mar. 24, 2021
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Stephen N. Sweet, San Jose, CA (US);
Dong Zheng, Los Altos, CA (US);
Assignee:
APPLE INC., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/068 (2006.01); H01S 3/13 (2006.01);
U.S. Cl.
CPC ...
H01S 5/06808 (2013.01); H01S 3/13 (2013.01);
Abstract
A method of operating a laser includes generating a first signal having a first frequency, and generating a second signal having a second frequency. The first frequency varies in accord with an amplitude of a drive current provided to a laser. The method further includes incrementing or decrementing a count responsive to a relationship between the first frequency and the second frequency; determining the count satisfies a threshold count; and modifying operation of the laser when the count satisfies the threshold count.