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:
Mar. 28, 2017
Filed:
Jun. 13, 2014
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Bruce C. Po, Foster City, CA (US);
Vladan Bajic, San Francisco, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10K 11/16 (2006.01); G10K 11/175 (2006.01); G10K 11/178 (2006.01);
U.S. Cl.
CPC ...
G10K 11/175 (2013.01); G10K 11/1784 (2013.01); G10K 2210/1081 (2013.01); G10K 2210/3056 (2013.01);
Abstract
An anti-noise signal is produced in accordance with an active noise cancellation process (ANC), at an input of a speaker so as to control how much background noise a user can hear. Strength of the anti-noise signal is adjusted gradually, rather than abruptly, in proportion to decreasing or increasing sound pressure level (SPL) of the background noise, during inactivation or activation of the ANC process. Other embodiments are also described and claimed.