Parade Technologies, Ltd.

Jeffrey Tucker

Marcin Lobrow

Tom Bentson

Gary Sterling

Victor P Drake

Ming Qu

Benjamin James Avery

Jeffrey Jay Dahlin

Kevin Ryan McNeely

This application is directed to detecting touch events on a touch sensing surface coupled to a capacitive sense array and one or more force electrodes. The capacitive sense array includes a plurality of sense electrodes configured to provide a plurality of capacitive sense signals. The force electrodes are configured to provide one or more force signals. A subset of sense electrodes are determined to be associated with a candidate touch based on the capacitive sense signals and their associated baseline values. When force associated with the force signals is below a predetermined force threshold, the candidate touch is determined as an invalid touch (e.g., coverage by a water drop on an area of the touch sensing surface corresponding to the subset of sense electrodes). Baseline values are adjusted for the subset of sense electrodes for determining subsequent touch events associated with the subset of sense electrodes.

Using 3D touch for tracking objects on a wet touch surface

This application is directed to detecting touch events on a touch sensing surface coupled to a capacitive sense array and one or more force sensors. The capacitive sense array includes a plurality of sense electrodes configured to provide a plurality of capacitive sense signals. The force sensors are configured to provide one or more force signals. In accordance with the plurality of capacitive sense signals, one or more candidate touches are determined on the touch sensing surface, and used to determine an expected force shape. An actual force shape caused on the touch sensing surface by the candidate touches is determined from the one or more force signals. The actual and expected force shapes are compared to determine magnitudes of force associated with each of the one or more touch candidates, thereby determining whether each of the one or more candidate touches is a valid touch.

Determination of valid touches based on force shape

This application is directed to detecting touch events on a touch sensing surface coupled to a capacitive sense array and one or more force sensors. The capacitive sense array includes a plurality of sense electrodes configured to provide a plurality of capacitive sense signals. The force electrodes are configured to provide one or more force signals. In accordance with the capacitive sense signals, one or more candidate touches are detected on the touch sensing surface, and the detected candidate touches include a first candidate touch. When it is determined that force associated with the one or more force signals is associated with a grip on an edge area of the touch sensing surface, the first candidate touch is associated with the grip on the edge area of the touch sensing surface, and is designated as an invalid touch.

Suppression of grip-related signals using 3D touch

The various implementations described herein include systems, methods and/or devices used to enable false touch detection. An exemplary method is performed at a touch-sensitive device and includes performing a plurality of scans of the touch-sensitive array during a time window, response data is captured from each of the plurality of scans. Distilling a value for each respective scan from the response data captured during the respective scan. Identifying a set of peaks from the distilled values, each peak having a plurality of characteristic values. The method further includes: (i) determining a metric for the peaks based on the plurality of characteristic values associated with each peak; (ii) determining whether the metric satisfies a criterion, and (iii) in response to determining that the metric satisfies the criterion, rejecting at least some of the response data captured during the time window as representing at least one false touch.

False touch and water detection for touch-sensitive displays

The various implementations described herein include methods, devices, and systems for detecting touch inputs. In one aspect, a device includes: (1) a touch surface; (2) a plurality of sense electrodes coupled to the touch surface and configured to sense capacitance of a touch input; (3) one or more force electrodes coupled to the touch surface and configured to sense force of the touch input; and (4) a sensing module configured to: (a) determine capacitance of at least a subset of the plurality of sense electrodes; (b) determine force of at least one of the one or more force electrodes; and (c) if the capacitance meets one or more first predefined criteria indicative of a touch input and if force meets one or more second predefined criteria indicative of a touch input, determine that the touch input is present on the touch-sensitive surface.

Signal conditioning on touch-enabled devices using 3D touch

The various implementations described herein include methods, devices, and systems for detecting touch inputs. In one aspect, a device includes: (1) a touch surface; (2) a plurality of sense electrodes configured to sense capacitance of a touch input; (3) one or more force electrodes configured to sense force of the touch input; and (4) a sensing module configured to: (a) determine a first capacitance; (b) determine whether the first capacitance exceeds an adaptive threshold; (c) if the first capacitance does not exceed the adaptive threshold, determine a force; (d) if the force meets one or more predefined criteria indicative of a touch input, lower the adaptive threshold; (e) determine a second capacitance; (f) determine whether the second capacitance exceeds the lowered threshold; and (g) if the second capacitance exceeds the lowered threshold, determine that the touch input is present on the touch surface.

Using 3D touch for signal conditioning and noise reduction on a touch surface

A method can include determining an initial position of an object with respect to a sensing region formed by a plurality of sensors and having a core region bounded by at least one edge; if the initial position is proximate to the edge and a size of the object was previously calculated, determining a final edge position of the object using the previously calculated object size; and if the initial position is proximate to the edge and the size of the object was not previously calculated, determining a size of the object.

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Lynnwood, WA, United States of America

Jeffrey Tucker