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:
Jul. 29, 2025
Filed:
Aug. 31, 2021
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Mohammed Zourob, London, CA;
Alexander Hunt, Tygelsjö, SE;
Andreas Kristensson, Södra Sandby, SE;
Mohammed Abdulaziz, Lund, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Methods () and apparatuses () disclosed herein embody a technique for reading a touch sensor () that provides several advantages, including scalability to touch sensors with high column/row counts and reductions in operating power. 'Reading' in this context refers to the application of one or more excitation frequencies to one or more column lines () and row lines () used for detecting touch inputs to a touch surface () of the touch sensor (), along with the corresponding transformation of the resulting sensing signals into frequency domain values and evaluation of the values () corresponding to the excitation frequencies. The technique in an example implementation involves a hierarchical reading scheme that divides the touch surface (), or any portion thereof, into regions, and performs initial touch detection at the per-region resolution, with subsequent higher-resolution reading of at least the region(s) where touch inputs have been detected.