Patent ID: 11886267
Assignee: ADVANCED TELESENSORS, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  A  H  Y | IPC G  H

Claim 17:
18. An electronic device, comprising a liquid crystal display (LCD) screen, the electronic device comprising:
at least one radio frequency (RF) antenna mounted behind a LCD panel of the LCD screen, wherein the at least one RF antenna comprises a directional transmit RF antenna configured to transmit an RF signal forward through the LCD panel to impinge on tissue of a human user, and the at least one RF antenna comprises a receive antenna configured to receive a reflected RF signal that comprises a reflection of the RF signal impinged on tissue of the human user; and
at least one processor configured to process the reflected RF signal to generate a processed signal indicative of presence or absence of the human user, and, responsive to the processed signal, control an operating mode of the electronic device or enable control by the human user of the electronic device;
wherein the processing of the reflected RF signal comprises detection of respiration rate, blood pressure, and/or a cardiac signal, without identification of gross motion of the human user, as an indicator of presence of the human user.