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. 26, 2023
Filed:
Feb. 13, 2023
Infineon Technologies Ag, Neubiberg, DE;
Ana-Maria Plaiseanu, Ploiesti, RO;
Costin Batrinu, Bucharest, RO;
Infineon Technologies AG, Neubiberg, DE;
Abstract
A method for calibrating an ultrasonic touch sensor includes generating a sequence of excitation signals, including sweeping a signal parameter such that the signal parameter is set to different parameter values; sequentially transmitting the plurality of ultrasonic transmit waves based on the sequence of excitation signals; receiving a plurality of ultrasonic reflected waves; generating a plurality of measurement signals representative of the plurality of ultrasonic reflected waves, wherein each measurement signal corresponds to a respective ultrasonic reflected wave of the plurality of ultrasonic reflected waves; determining a cumulative signal energy for each measurement signal; determining which measurement signal out of the plurality of measurement signals has a highest cumulative signal energy; and configuring, for a touch detection operation, the signal parameter with the parameter value that corresponds to the measurement signal having the highest cumulative signal energy.