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. 02, 2026
Filed:
Jan. 23, 2023
Amazon Technologies, Inc., Seattle, WA (US);
Kandarp Shah, San Jose, CA (US);
Pratik Kalpesh Patel, San Jose, CA (US);
Sai Prashanth Chinnapalli, Dublin, CA (US);
Zheda Li, Mountain View, CA (US);
Durga Laxmi Narayana Swamy Inti, San Jose, CA (US);
Suman Suhas Hosmane, Sunnyvale, CA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Technologies of a device-based Fast Presence Detection (FPD) for a contactless sleep-tracking device are described. One method of a sleep-monitoring device includes receiving radar data from a radar unit. The radar data includes i) first data representing a breathing waveform associated with a user, ii) a first set of range values, and iii) a first set of confidence values associated with the first data. The method determines absolute magnitude values, first infinite impulse response (IIR) values using the first set of range values, and second IIR values using the first set of confidence values. The method determines a first event representing the user located in a first region using the absolute magnitude values and the first and second IIR values. The method sends an indication of the first event to a cloud service that causes one or more devices in the environment to perform one or more actions.