Cirque Corporation

Michael D Layton

David Taylor

Brian Taylor

Richard D Woolley

Keith Lynn Paulsen

George E Gerpheide

Vadim Klishko

Don T Saxby

A method for detecting and tracking multiple fingers in a two dimensional set of results using oversampling hill climbing and descent with range.

Multi-dimensional multi-finger search using oversampling hill climbing and descent with range

A method for single and multi-finger extraction and position calculation using weighted masks for each finger, the masks for each finger being calculated using the previous position of each finger, and when the measured results overlap, the results are apportioned according to the masks such that each position result is scaled according to its mask, and scaled by its mask divided by the sum of all overlapping masks.

Single and multiple finger extraction and position calculation using a weighted mask

A method of performing a two-finger gesture when the absolute position of the fingers does not need to be known in order to perform the gesture. A touch sensor may provide a false or ghosted position and a real position for each actual finger on the touch sensor. The real position for each finger is located by finding a strongest signal when performing a short aperture measurement relative to one side of the touch sensor so that the direction of a rotation gesture can be determined. The position of fingers in single finger and multi-finger gestures may be determined using de-ghosted weighted average and weighted absolute deviation calculations.

High resolution non-ghosted gestures

A method of moving an object in a generally circular manner on the surface of a touchpad and causing a list to be scrolled as long as the object is moving, wherein a method is provided for activating a scrolling function, wherein a method is provided for determining what direction scrolling should occur based upon a direction of movement when scrolling is engaged, and wherein the direction of scrolling is only changed by an abrupt change in direction of the object.

Method and system for performing scrolling by movement of a pointing object in a curvilinear path on a touchpad

A proximity-based mutually capacitance-sensitive touchpad that is disposed directly beneath a keypad keymat of a mobile telephone, wherein posts associated with each key pass through a mutually capacitance-sensitive sensor electrode grid of the touchpad such that the keypad posts do not interfere with touchpad detection and tracking of a pointing object that moves along the keypad surface, to thereby enable touchpad data entry, cursor control, and scroll bar control on a display of the mobile telephone, wherein the keypad posts actuate mechanical switches underneath the touchpad.

System for disposing a proximity sensitive touchpad behind a mobile phone keymat

A method of using a capacitance-sensitive touchpad, wherein the touchpad includes a zone on a surface thereof, wherein touchdown of a pointing object within the zone enables activation of a scrolling function, wherein direction of scrolling is then controlled by a gesture by the pointing object, such as moving in a circular motion in a clockwise direction to move down in a list, and in a counter clockwise direction to move up in a list, and wherein fast and slow scrolling speeds are controlled by tapping functions within the scroll zone.

Method of scrolling that is activated by touchdown in a predefined location on a touchpad that recognizes gestures for controlling scrolling functions

A single-layer touchpad comprised of a relatively clear substrate, a first active electrode disposed thereon, and a sense electrode disposed thereon, wherein the first active electrode and the sense electrode are comprised of a conductive material, wherein the first active electrode in combination with the sense electrode are used to detect the presence of a pointing object in a zone, determining in which zone the pointing object has been detected, or the simultaneous presence of multiple pointing objects in multiple zones, and wherein the first active electrode and/or the sense electrode are made sufficiently visible so that a pattern is visually detectable to the user when looking at the display screen.

Single-layer touchpad having touch zones

System for disposing a proximity sensitive touchpad behind a mobile phone keypad

Apparatus and method for a capacitance-based proximity sensor with interference rejection. A pair of electrode arrays establish a capacitance on a touch detection pad, the capacitance varying with movement of a conductive object near the pad. The capacitance variations are measured synchronously with a reference frequency signal to thus provide a measure of the position of the object. Electrical interference is rejected by producing a reference frequency signal which is not coherent with the interference.

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Salt Lake City, UT, United States of America

Michael D Layton