Patent
Setting a discharge rate and a charge rate of a relaxation oscillator circuit
Zheng Qin,Tao Peng +1 more
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TLDR
In this paper, an apparatus and method for setting a ratio of a discharge rate to a charge rate for measuring a capacitance on a sensor element of a sensing device was presented.Abstract:
An apparatus and method for setting a ratio of a discharge rate to a charge rate for measuring a capacitance on a sensor element of a sensing device. The apparatus may include a sensor element of a sensing device, a relaxation oscillator having a first and a second programmable current source, and a ratio decoder to receive a ratio of a discharge rate to a charge rate, and to set the first and second programmable current sources based on the received ratio.read more
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Patent
Conductor pattern structure of capacitive touch panel
Ching-Yang Chang,Shun-Ta Chien +1 more
TL;DR: In this paper, a conductor pattern structure of a capacitive touch panel is described, which includes a plurality of first-axis conductor cells that are interconnected by second-axis conduction lines.
Patent
Method and system for electronically securing an electronic device using physically unclonable functions
TL;DR: In this paper, a physically unclonable function (PUF) circuit is used to generate security words and keys, such as an RSA public or private key, which can be used to protect biometric security sensors and IC chips from attack or spoofing.
Patent
Capacitance to code converter with sigma-delta modulator
TL;DR: An apparatus and method for converting a capacitance measured on a sensor element to a digital code is described in this article, where the switching capacitor is in a feedback loop of the sigma-delta modulator.
Patent
Apparatus and method for reducing average scan rate to detect a conductive object on a sensing device
TL;DR: In this paper, a switch circuit is configured to couple each of a plurality of plurality of capacitive sense elements and a pluralityof capacitance sensors in different modes, such that the switch circuit can couple the plurality of sense elements to individual ones of the two or more of the sense elements in one of the groups.
Patent
Touch detection techniques for capacitive touch sense systems
TL;DR: In this article, a technique for recognizing and rejecting false activation events related to a capacitance sense interface includes measuring a measured capacitance value of an element to determine a baseline capacitance values for the capacitance sensor.
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Patent
Gestures for touch sensitive input devices
Steve Hotelling,Joshua A. Strickon,Brian Q. Huppi,Imran Chaudhri,Greg Christie,Bas Ording,Duncan Robert Kerr,Jonathan P. Ive +7 more
TL;DR: In this article, the authors described a system for processing touch inputs with respect to a multipoint sensing device and identifying at least one multipoint gesture based on the data from the multi-point sensing device.
Patent
Method and apparatus for integrating manual input
TL;DR: In this paper, a simple proximity transduction circuit is placed under each electrode to maximize the signal-to-noise ratio and to reduce wiring complexity, and segmentation processing of each proximity image constructs a group of electrodes corresponding to each distinguishable contacts and extracts shape, position and surface proximity features for each group.
Patent
Touch screen device, method, and graphical user interface for determining commands by applying heuristics
Steven P. Jobs,Scott Forstall,Greg Christie,Stephen O. Lemay,Scott Herz,Os Marcel Van,Bas Ording,Gregory Novick,Wayne Carl Westerman,Imran Chaudhri,Patrick L. Coffman,Kenneth Kocienda,Nitin Ganatra,Jeremy Wyld,Jeffrey Bush,Freddy Allen Anzures,Michael Matas,Paul D. Marcos,Charles J. Pisula,Virgil Scott King,Chris Blumenberg,Francisco Ryan Tolmasky,Richard Williamson,Andre M.J. Boule,Henri C. Lamiraux +24 more
TL;DR: In this paper, a computer-implemented method for use in conjunction with a computing device with a touch screen display comprises: detecting one or more finger contacts with the touch screen, applying one or several heuristics to the finger contacts to determine a command for the device, and processing the command.
Patent
Object position detector with edge motion feature and gesture recognition
TL;DR: In this paper, the authors proposed a method of generating a signal comprising providing a capacitive touch sensor pad including a matrix of X and Y conductors, developing capacitance profiles in one of an X direction and a Y direction from the matrix, and determining an occurrence of a single gesture through an examination of the capacitance profile, the single gesture including an application of at least two objects on the capacitive sensor pad.
Patent
Multi-functional hand-held device
TL;DR: In this paper, a multi-functional hand-held device capable of configuring user inputs based on how the device is to be used is presented, and a GUI for each of the multiple functions of the devices is presented.