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:
Apr. 18, 2017
Filed:
Apr. 29, 2013
Flatfrog Laboratories Ab, Lund, SE;
Tomas Christiansson, Torna-Hallestad, SE;
Nicklas Ohlsson, Bunkeflostrand, SE;
Andreas Björklund, Lund, SE;
Mats Petter Wallander, Lund, SE;
FLATFROG LABORATORIES AB, Lund, SE;
Abstract
A signal processor implements a technique for detecting objects on a panel which transmits signals inside the panel such that the objects are allowed to interact with (e.g. attenuate) the signals by contact with a touch surface of the panel. The signal processor operates to define cells that have a given location on the touch surface and are associated with a respective set of intersecting paths for the signals across the touch surface. The signal processor operates to obtain () an output signal from a signal detection arrangement that measures a signal property for each path; process () the output signal to obtain an interaction value for each path; and determine (-) a touch status of a selected cell among the cells by analyzing the distribution of interaction values for at least part of the intersecting paths. The touch status indicates presence or absence of one of the objects in the selected cell.