公开(公告)号：US20170177109A1

公开(公告)日：2017-06-22

申请号：US14972189

申请日：2015-12-17

Applicant: SYNAPTICS INCORPORATED

Inventor： Igor POLISHCHUK

IPC: G06F3/044 ,  G06F3/0354

CPC classification number: G06F3/044 ,  G06F3/03545 ,  G06F2203/04101

Abstract: Techniques for estimating height of an input object in a sensing region of an input device are provided. The techniques include constructing a signal profile based on measured data. The techniques also include determining a fit value of a fitting parameter of a mathematical function that fits the mathematical function to the signal profile such that the fitting of the mathematical exceeds a quality threshold. The fitting parameter correlates to hover height of the input object and adjusting the fitting parameter affects the fit of the mathematical function to the signal profile. In some embodiments, fitting a curve includes varying the height parameter of a mathematical function until the curve generated by the mathematical function with the selected height parameter is deemed to fit obtained sensor data to within a certain tolerance. In other embodiments, fitting a curve may be accomplished with direct computation.

公开(公告)号：US20180004320A1

公开(公告)日：2018-01-04

申请号：US15199371

申请日：2016-06-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Igor POLISHCHUK ,  Joseph Kurth REYNOLDS

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0414 ,  G06F3/0416 ,  G06F2203/04106

Abstract: This disclosure generally provides input devices, processing systems and methods for touch and force sensing utilizing combination sensor conductors. The combination sensor conductors are configurable as capacitive sensor conductors and force sensor conductors via operation of a processing system.

公开(公告)号：US20170277294A1

公开(公告)日：2017-09-28

申请号：US15083187

申请日：2016-03-28

Applicant: SYNAPTICS INCORPORATED

Inventor： Ying WANG ,  Igor POLISHCHUK

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: Embodiments described herein include a method for calibrating capacitive force sensors. The method includes acquiring a plurality of changes of capacitance at a plurality of sensor electrodes in a capacitive sensor, where the plurality of changes of capacitance represents a force. The method also includes identifying a plurality of inflection points in the plurality of changes of capacitance, where each of the plurality of inflection points bounds a region of modeling. The method includes determining a modeling equation for each region of modeling, where the modeling equations are used for calibration of force sensing.