Keith L Paulsen

US Patent:

8194046, Jun 5, 2012

Filed:

Nov 20, 2009

Appl. No.:

12/592283

Inventors:

Jared G. Bytheway - Sandy UT, US
Keith L. Paulsen - Centerville UT, US

Assignee:

Cirque Corporation - Salt Lake City UT

International Classification:

G06F 3/041
G06F 3/045

US Classification:

345173, 178 1805, 178 1806

Abstract:

A touch panel having a substantially even coating of a conductive material on a non-conductive substrate and then covering the conductive material with a dielectric material, wherein a novel current measuring circuit reduces the effect of stray capacitance on the accuracy of a current measurement so that the relative X and Y position of an object on the touch panel can be determined using simple ratio equations.

US Patent:

8432375, Apr 30, 2013

Filed:

Jun 4, 2012

Appl. No.:

13/488089

Inventors:

Jared G. Bytheway - Sandy UT, US
Keith L. Paulsen - Salt Lake City UT, US

Assignee:

Cirque Corporation - Salt Lake City UT

International Classification:

G06F 3/044

US Classification:

345174, 178 1806

Abstract:

A touch panel having a substantially even coating of a conductive material on a non-conductive substrate and then covering the conductive material with a dielectric material, wherein a novel current measuring circuit reduces the effect of stray capacitance on the accuracy of a current measurement so that the relative X and Y position of an object on the touch panel can be determined using simple ratio equations.

US Patent:

8593432, Nov 26, 2013

Filed:

Oct 19, 2011

Appl. No.:

13/276747

Inventors:

Keith L. Paulsen - Centerville UT, US
Andrew Paulsen - Centerville UT, US

Assignee:

Cirque Corporation - Salt Lake City UT

International Classification:

G06F 3/045

US Classification:

345174, 345173, 178 1801, 178 1806

Abstract:

A massively parallel capacitive touchpad architecture that enables the taking of simultaneous measurements that can be used to mathematically divide out and cancel the effect of the noise in one axis by isolating the noise to only the electrodes under or near the fingers being detected by using a sample and hold circuit that provides advantages over existing measurement circuits.

US Patent:

20100328241, Dec 30, 2010

Filed:

Jun 14, 2010

Appl. No.:

12/815246

Inventors:

Keith Paulsen - Centerville UT, US
Jared G. Bytheway - Sandy UT, US

International Classification:

G06F 3/041

US Classification:

345173

Abstract:

A touch panel having a substantially even coating of a conductive material on a non-conductive substrate and then covering the conductive material with a dielectric material, wherein a novel current measuring circuit reduces the effect of stray capacitance on the accuracy of a current measurement so that the relative X and Y position of an object on the touch panel can be determined using simple ratio equations.

US Patent:

20100328253, Dec 30, 2010

Filed:

Mar 8, 2010

Appl. No.:

12/719717

Inventors:

Keith Paulsen - Salt Lake City UT, US
Jared G. Bytheway - Sandy UT, US

International Classification:

G06F 3/045

US Classification:

345174

Abstract:

A surface capacitance touch sensitive surface (or “surface cap panel”) suitable for use in a touch screen or touchpad, wherein the surface cap panel has a substantially even coating of a conductive material on a non-conductive substrate and then covering the conductive material with a dielectric material, wherein a novel current measuring circuit reduces the effect of stray capacitance on the accuracy of a current measurement so that the relative X and Y position of an object on the surface cap panel can be determined using simple ratio equations, and wherein measuring the charge transfer rate in a measuring circuit, in addition to the total charge transfer for each toggle event, enables the location of two objects to be identified on the surface cap panel, wherein the charge transfer rate is used to determine the distance between two points of contact on the surface cap panel, and wherein height and width information related to the distance between the two points of contact can now be determined by doubling the number of electrodes at the corners of the surface cap panel.

US Patent:

20110001713, Jan 6, 2011

Filed:

Jun 14, 2010

Appl. No.:

12/815195

Inventors:

Keith Paulsen - Centerville UT, US
Jared G. Bytheway - Sandy UT, US

International Classification:

G06F 3/041

US Classification:

345173, 178 1803

Abstract:

Increasing the effective size of a touchpad while using a single controller IC, wherein a pseudo random pattern is used such that when a certain order of electrical signals is applied to the electrodes, the local electrical fields cancel or are very large in a first region while the electrical fields in a second region create a desired electrical field pattern, wherein when a finger makes contact in the second region a certain electrical signal is expected, wherein when a finger makes contact in the first region the electrical signal is unexpected, and wherein the difference between the electrical signals from the first region and the second region can be distinguished and thus the region in which the finger made contact can be determined.

US Patent:

20110037724, Feb 17, 2011

Filed:

Aug 12, 2010

Appl. No.:

12/855545

Inventors:

Keith L. Paulsen - Centerville UT, US
Paul Vincent - Fruit Heights UT, US
Jared G. Bytheway - Sandy UT, US

International Classification:

G06F 3/044

US Classification:

345174

Abstract:

A method for detecting multiple objects on a touchpad having a grid of orthogonal electrodes, wherein all drive electrodes are simultaneously stimulated, and then frequency or electrode coding is used to separate each electrode junction and produce a capacitance image of the touchpad surface in a single measurement sequence.

US Patent:

20120133614, May 31, 2012

Filed:

Nov 30, 2011

Appl. No.:

13/308323

Inventors:

Jared G. Bytheway - Sandy UT, US
Keith L. Paulsen - Centerville UT, US

International Classification:

G06F 3/044

US Classification:

345174, 178 1806

Abstract:

A touch sensor having a plurality of parallel drive electrodes that are being electrically driven, providing stimulus on one end or simultaneously on both ends, thus creating a linear or varying electric field across the length of the drive electrodes, wherein adjacent sensor electrodes are connected to a sense amplifier and analog-to-digital (ADC) converter to determine the position of an object that comes near to the drive and/or sense electrodes, wherein the system uses self-capacitance and measures the amount of current driven by each driver, wherein the system uses a mutual capacitance current divider in a first method by driving an electrode with a time varying voltage and measuring induced currents at each end of an adjacent sense electrode and using ratiometric equations to determine finger position, and using a mutual capacitance voltage divider in a second method.