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:
Aug. 10, 2021
Filed:
Jul. 08, 2020
Amazon Technologies, Inc., Seattle, WA (US);
Xuan Zhong, San Jose, CA (US);
Chia-Jean Wang, Palo Alto, CA (US);
Bozhao Tan, Sunnyvale, CA (US);
Han Zhang, Mountain View, CA (US);
Jianchun Dong, Palo Alto, CA (US);
Geng Ye, San Jose, CA (US);
AMAZON TECHNOLOGIES, INC., Seattle, WA (US);
Abstract
A head-mounted wearable device provides many functions to a user. The functions may be provided based in part on whether the device is being worn (donned) or not worn (doffed). Force sensing resistors in the device provide output indicative of forces associated with wearing the device. A time series of values indicative of the magnitude of a force may be determined. An increase or decrease in force values measured at different times may indicate that the device has been donned or doffed, respectively. If a subsequent force value does not differ substantially from a previous force value, this may indicate that the device has remained donned or doffed.