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. 17, 2022
Filed:
Jul. 31, 2019
Fnv Ip B.v., Leidschendam, NL;
Dennis Van Weeren, Nieuw Vennep, NL;
Abstract
A receiver () for providing an activation signal () to transition a device from a dormant state to an operative state. The receiver includes a sensor (), a super regenerative oscillator, SRO, circuit (), and a processing device (). The sensor is one of an optical sensor, an acoustic sensor, and a magnetic field sensor, and generates detector signals () based on wireless signals () received from an external source (). The SRO circuit is electrically coupled to the sensor to receive the detector signals, and electrically oscillates with a constant SRO frequency and with a SRO amplitude (As) that changes when a carrier frequency of the detector signal substantially matches the SRO frequency. The processing device monitors the SRO amplitude in time, and generates the activation signal when a temporal characteristic (Sc) of the monitored SRO amplitude matches a predetermined reference pattern ().