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:
Jun. 30, 2020
Filed:
Jun. 29, 2017
Amazon Technologies, Inc., Seattle, WA (US);
Geng Ye, San Jose, CA (US);
Zhen Xu, Santa Clara, CA (US);
Haoxing Zhang, Sunnyvale, CA (US);
Bozhao Tan, Sunnyvale, CA (US);
Xuan Zhong, Mountain View, CA (US);
Jianchun Dong, Palo Alto, CA (US);
AMAZON TECHNOLOGIES, INC., Seattle, WA (US);
Abstract
A head-mounted wearable device (HMWD) may incorporate bone conduction speakers (BCS) to generate audio output that is perceptible to a wearer. During operation, vibrations of the BCS may produce sound in the surrounding air that is perceptible to bystanders. An active noise cancellation module monitors the output and generates cancellation audio that is out of phase with the sound leaked by the BCS. An air conduction speaker emits the cancellation audio, producing destructive acoustic interference to the leaked sound. As a result, the user of the HMWD is able to hear audio clearly while bystanders are not.