Patent ID: 9626018
Date: 2017-04-18
CPC Classifications: G06F

Claim:
1. A method for detecting objects on a panel having a touch surface, said method comprising: defining a plurality of reconstruction cells with respect to the touch surface, each of the plurality of reconstruction cells corresponding to a region on the touch surface, the region being intersected by a respective set of signal transmission paths, the signal transmission paths defined by signals transmitted across the touch surface from a plurality of emitters to a plurality of detectors, and the signal transmission paths extending across the touch surface of the panel between pairs of the plurality of emitters and the plurality of detectors; obtaining an output signal based on a signal property measurement for each signal transmission path; processing the output signal to obtain an interaction value for each signal transmission path; and determining a touch status of a selected reconstruction cell among the plurality of reconstruction cells by analyzing a distribution of interaction values for signal transmission paths intersecting the region on the touch surface corresponding to the selected reconstruction cell, the touch status indicating presence or absence of at least one of the objects in the region corresponding to the selected reconstruction cell; wherein the determining a touch status includes