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:
May. 27, 2025
Filed:
Jan. 14, 2021
Apple Inc., Cupertino, CA (US);
Nicholas P. Allec, Santa Cruz, CA (US);
Yuta Kuboyama, San Mateo, CA (US);
Xiaoyang Zhang, Singapore, SG;
Xi Chen, Millbrae, CA (US);
Ryan M. Buck, San Francisco, CA (US);
Praveesh Chandran, Singapore, SG;
Yifei Wang, Sunnyvale, CA (US);
Tingjun Xu, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A wearable electronic device such as an earbud, wristwatch, or other device may be provided with a skin sensor. The skin sensor may use optical measurements to detect the presence of skin adjacent to the electronic device. The sensor may have first and second light-emitting devices such as infrared devices that emit light at respective first and second infrared light wavelengths. Reflected light is monitored by a photodetector. Control circuitry can initiate or pause audio playback or take other actions in response to determining from the reflected light measurements that skin is present. The sensor may have a thin-film interference filter or other optical structure that overlaps the first and second light-emitting devices to narrow the angular spread of light emitted from the skin sensor. This reduces tilt sensitivity and helps enhance skin sensor accuracy.