James L Aroyan

US Patent:

6593916, Jul 15, 2003

Filed:

Nov 3, 2000

Appl. No.:

09/705383

Inventors:

James L. Aroyan - Santa Cruz CA 95060-5936

International Classification:

G09G 500

US Classification:

345173, 345174, 345176, 345177, 345178

Abstract:

A resistive or capacitive position touchscreen includes a glass substrate having a uniform resistive coating and series resistive chains of overlapping discrete electrodes adjacent to the peripheral edges of the substrate. Gaps in an otherwise insulating linear discontinuity running parallel to each chain form resistive current paths across the touch area. There are at least two gaps for each electrode so that multiple current paths connect to each electrode. Each gap produces a local ripple in the voltage field which decays away with distance from the gap. Since the ripple decay length is determined by the distance between current paths, the magnitude of the ripple near the electrodes is reduced exponentially by a factor corresponding to the number of gaps per electrode.

US Patent:

7180508, Feb 20, 2007

Filed:

Sep 17, 2002

Appl. No.:

10/246059

Inventors:

Joel C. Kent - Fremont CA, US
James L. Aroyan - Santa Cruz CA, US

Assignee:

Tyco Electronics Corporation - Middletown PA

International Classification:

G09G 5/00

US Classification:

345178, 178 1801, 345173

Abstract:

The present invention provides a way to measure and track non-linear corrections in touchscreens. Some or all of the relevant non-linear corrections may be determined automatically. Production floor test equipment may make electronic measurements, compute parameters, and load the parameters in non-volatile memory of the controller electronics. Alternatively, the controller electronics can make the electronic measurements and determine non-linear parameters. The latter embodiment of the invention permits the determination of non-linear parameters in the field, dynamically tracking changes in the non-linear characteristics of installed touchscreens that occur over time or due to environmental conditions.

US Patent:

7952567, May 31, 2011

Filed:

Nov 3, 2005

Appl. No.:

11/267759

Inventors:

James L. Aroyan - Soquel CA, US
Daniel H. Scharff - San Leandro CA, US

Assignee:

Tyco Electronics Corporation - Berwyn PA

International Classification:

G06F 3/045
G06F 3/041

US Classification:

345174, 345173, 178 1805

Abstract:

A touch sensor includes a substrate with a touch region, and a series resistor chain for creating electrical fields across the touch region. The resistor chain comprises a plurality of conductive electrodes that to form overlap resistors therebetween. The electrodes have inner portions that are separated by junctions. The touch sensor also includes insulating regions between the touch region and the resistor chain. The insulating regions are separated by gaps to provide a plurality of conductive pathways to the touch region, thereby minimizing non-linear ripple along the sourcing sides of the substrate. Some of the gaps are junction gaps that are formed between the touch region and junctions. Electrically conductive islands are placed within the junction gaps to provide an electrical node within each junction gap, thereby preventing bunching of equipotential lines within the junction, and minimizing non-linear ripple along the non-sourcing sides of the substrate.

US Patent:

8243048, Aug 14, 2012

Filed:

Apr 25, 2007

Appl. No.:

11/789776

Inventors:

Joel C. Kent - Fremont CA, US
James L. Aroyan - Santa Cruz CA, US
Ting Gao - Sunnyvale CA, US
Yoshikazu Tanaka - Yokohama Kanagawa, JP
Daniel H. Scharff - San Leandro CA, US

Assignee:

Elo Touch Solutions, Inc. - Menlo Park CA

International Classification:

G06F 3/043

US Classification:

345177, 345173, 178 1803, 178 1804

Abstract:

A touchscreen system comprises a touch area. At least one transmitter is positioned proximate to outer edges of the touch area for transmitting first beams in a first direction. At least one beam splitter is positioned proximate to the outer edges of the touch area for splitting the first beams into at least second and third beams that travel through the touch area in at least second and third directions, respectively. The at least one beam splitter comprises a plurality of deflecting elements. Receivers are positioned proximate to the outer edges of the touch area for receiving the at least second and third beams.

US Patent:

8279194, Oct 2, 2012

Filed:

May 22, 2009

Appl. No.:

12/471194

Inventors:

Joel C. Kent - Fremont CA, US
James L. Aroyan - Santa Cruz CA, US

Assignee:

Elo Touch Solutions, Inc. - Menlo Park CA

International Classification:

G06F 3/045

US Classification:

345174, 345168, 178 1806

Abstract:

A projected capacitive touch screen is provided that comprises a substrate and electrodes. The substrate defines an active touch zone surrounded by edges. The active touch zone includes a central active zone and an acceleration zone that is located proximate to, and extends along, at least one of the edges. The electrodes are provided on the substrate and are organized into first and second sets of electrodes that are contained within a common plane on the substrate. The first set of electrodes is interlaced with the second set of electrodes in a non-overlapping pattern on the substrate. At least a subset of the electrodes each has an apex and a base and a non-uniform triangular shape that extends along a longitudinal axis between the apex and the base.

US Patent:

8378974, Feb 19, 2013

Filed:

Jul 2, 2007

Appl. No.:

11/824965

Inventors:

James L. Aroyan - Santa Cruz CA, US
Henry M. D'Souza - San Diego CA, US
Charles David Fry - New Bloomfield PA, US
Joel C. Kent - Fremont CA, US

Assignee:

Elo Touch Solutions, Inc. - Menlo Park CA

International Classification:

G06F 3/041
G09G 5/00
G08C 21/00
G06K 11/06

US Classification:

345173, 345156, 178 1801

Abstract:

A method for detecting a touch event on a touch panel comprises obtaining at least first and second signals from at least two sensors where the at least first and second signals are responsive to a touch event. A first amplitude magnitude associated with the first signal is calculated and a second amplitude magnitude associated with the second signal is calculated. A magnitude ratio is determined between the first and second amplitude magnitudes, and a touch location is identified based on the magnitude ratio.

US Patent:

8477106, Jul 2, 2013

Filed:

Jul 29, 2009

Appl. No.:

12/511449

Inventors:

Ricardo R. Salaverry - San Jose CA, US
Joel C. Kent - Fremont CA, US
James L. Aroyan - Santa Cruz CA, US

Assignee:

ELO Touch Solutions, Inc. - Milpitas CA

International Classification:

G06F 3/041

US Classification:

345173, 345174

Abstract:

A touch location on a capacitive touchscreen system is identified by receiving signals in response to a touch from electronic channels connected to one electrode or to a group of semi-adjacent electrodes provided on a substrate. Adjacent ones of the electrodes have substantially triangular shapes that alternate between a first and second orientation to form an interleaved arrangement such that the touch generates a signal cluster comprising the signals generated from a series of adjacent electronic channels. Weights with at least two different numerical values are applied to the signals from the series of adjacent electronic channels. The at least two different numerical values are based on levels of the signals. A location of the touch on the substrate is determined based on the weighted signals.

US Patent:

20030231169, Dec 18, 2003

Filed:

Apr 15, 2003

Appl. No.:

10/413825

Inventors:

James Aroyan - Soquel CA, US
Daniel Scharff - San Leandro CA, US

International Classification:

G09G005/00

US Classification:

345/173000

Abstract:

A touch sensor includes a substrate with a touch region, and a series resistor chain for creating electrical fields across the touch region. The resistor chain comprises a plurality of conductive electrodes that to form overlap resistors therebetween. The electrodes have inner portions that are separated by junctions. The touch sensor also includes insulating regions between the touch region and the resistor chain. The insulating regions are separated by gaps to provide a plurality of conductive pathways to the touch region, thereby minimizing non-linear ripple along the sourcing sides of the substrate. Some of the gaps are junction gaps that are formed between the touch region and junctions. Electrically conductive islands are placed within the junction gaps to provide an electrical node within each junction gap, thereby preventing bunching of equipotential lines within the junction, and minimizing non-linear ripple along the non-sourcing sides of the substrate.