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:
Sep. 24, 2024
Filed:
Sep. 18, 2023
Infineon Technologies Ag, Neubiberg, DE;
Costin Batrinu, Bucharest, RO;
Gheorghe-Iulian Chivu, Targoviste, RO;
Emanuel Stoicescu, Bucharest, RO;
Infineon Technologies AG, Neubiberg, DE;
Abstract
An ultrasonic touch sensor includes a touch structure configured to receive a touch; a transmitter configured to transmit an ultrasonic transmit wave toward the touch structure; a receiver configured to receive ultrasonic reflected waves produced by a plurality of reflections of the ultrasonic transmit wave and generate a measurement signal representative of the ultrasonic reflected waves; and a measurement circuit configured to: acquire a first plurality of digital samples of the measurement signal during a first observation window that corresponds to a first ultrasonic reflected wave produced by a reflection of the ultrasonic transmit wave at the touch interface, acquire a second plurality of digital samples of the measurement signal during a second observation window that is subsequent in time to the first observation window, and determine whether a no-touch event or a touch event has occurred based on the first and the second plurality of digital samples.