3m Innovative Properties Company

Microtouch Systems, Inc.

Greensteel, Inc.

3m Innovative Properties

Polyvision Corporation

Bernard O Geaghan

Craig A Cordeiro

Edward S Hagermoser

Billy Lee Weaver

Stephen P Atwood

Thomas J Rebeschi

Gordon F Taylor

Karl P Hauck

Brock A Hable

Pradnya V Nagarkar

Roger W Barton

M Benton Free

Kenneth J Keefer

Albert H Libbey

Martin B Wolk

Michael Benton Free

Michael J Robrecht

Stephen C Schulz

Michael W Dolezal

Massoud S Badaye

Bülent Bulat

Rachael P Marino

Jianming Huang

Matthew S Stay

Mark A Roehrig

Robert S Moshrefzadeh

Ta-Hua Yu

Shawn C Dodds

Frank J Bottari

Robert R Kieschke

Tasuku Nakayama

Richard A Peterson, Jr

Alan H Field

Anthony F Chernefsky

Chia-Yen Li

James J Hart

Paul M Hatin

Brendan J Crowley

Steven J Buelte

Michael Woolstrum

Stephen Richard Robsky

James Sprague

A digitizer system includes a substrate with indicia that uniquely define local areas of the substrate. A multi-mode sensor device, such as a stylus, may sense radiation emitted from the features, and selectively switch to a mode of operation that can sense the indicia and determine therefrom the location of the stylus relative to the substrate.

Multi-mode stylus and digitizer system

A pen configured for use with a touch sensor includes a pen tip that is configured to make contact with the touch sensor. The pen body includes an electrically conductive receiver portion and an electrically conductive emitter portion that is electrically insulated and electrostatically shielded from the receiver portion. The pen includes circuitry configured to receive a touch sensor drive signal applied to a drive electrode of the touch sensor through the receiver portion of the pen body. In response to the received signal, the pen circuitry generates a pen drive signal that is phase additive with the touch sensor drive signal and emits the pen drive signal through the emitter portion of the pen body.

Pen for capacitive touch systems

A touch sensor can be used with a finger and/or a pen configured to provide a touch input to the touch sensor. Some implementations involve touch capacitive touch sensing, although many implementations are also applicable to other touch and pen technologies, such as resistive, surface acoustic wave, bending wave, touch force, electromagnetic (E-M).

Touch systems stylus and methods

An electrode for a touch sensitive device includes micro-wire conductors arranged to define an electrically continuous area and to include interior regions that are electrically discontinuous. The electrically continuous area may be patterned according to a one pattern, and the interior pattern may be patterned according to another pattern.

Mesh patterns for touch sensor electrodes

A touch-sensitive apparatus includes a touch panel comprising a touch sensitive surface and at least one a drive electrode capacitively coupled to at least one receive electrode. A sense circuit generates a response signal for the receive electrode in response to a drive signal delivered to the drive electrode. A measurement circuit applies a time-varying transfer function to the response signal. The transfer function varies proportionately and synchronously with the response signal. A calibration circuit is used to match the time-varying transfer function to the response signal.

Capacitive-based touch apparatus and method with reduced interference

An approach for determining touch location on a touch panel includes receiving information indicative of which of the electrodes in the first set of electrodes are not experiencing, or are unlikely to experience, a touch is received. Based on the received information, at least one electrode is selected from the first set of electrodes to function as a first reference electrode, remaining ones of the first set of electrodes referred to as first remaining electrode. Touch signals are measured for at least some of the touch panel nodes using a differential technique. The differential technique for each such node utilizes the first reference electrode in combination with at least one of the first remaining electrodes and with at least one of the electrodes from the second set of electrodes.

Capacitive touch systems and methods using differential signal techniques

Systems and methods for calibrating a photoluminescent indicia-based digitizer system with a display, the photoluminescent indicia uniquely identifying local areas of a substrate.

System and methods for calibrating a digitizer system

Touch location determination approaches involving a plurality of touch location techniques are described. Each touch location technique is capable of independently determining a location of a touch within a touch area of the touch sensitive device. The touch location determination made by at least one touch location technique is enhanced using touch location information associated with the touch acquired from one or more other touch location techniques. One touch location technique may use a different type of sensor, signal, and/or algorithm from the one or more other touch location techniques.

Touch location determination involving multiple touch location processes

Touch sensor layer constructions and methods of making such constructions are described. More particularly, touch sensor constructions that utilize patterned conductive layers that may be applied by a sacrificial release liner, eliminating one or more glass and/or film substrate from touch sensor stacks, and methods of making such constructions are described.

Transferable transparent conductive patterns and display stack materials

The present invention provides systems and methods of using a stylus that houses optics and a detector capable of receiving optical signals that are combined with a displayed image. Stylus position determination is made by analyzing received optical signals.

Digitizer using position-unique optical signals

A digitizer system including a substrate having a position-unique photoluminescent indicia pattern. A stylus component receives optical signals indicative of the indicia pattern and determines therefrom the position of the stylus relative to the substrate. Methods of disposing indicia on the substrate, and styli suitable for sensing photoluminescent indicia are also described.

Optical digitizer system with position-unique photoluminescent indicia

A digitizer system utilizing two location measurement techniques that operate in cooperation to improve the operation of the digitizer. The first location measurement technique provides an X-Y coordinate stylus location. The second location measurement technique provides a Z coordinate stylus location.

Digitizer using multiple stylus sensing techniques

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Salem, NH, United States of America

Bernard O Geaghan