Synaptics Corporation

Synpatics Incorporated

Felix Schmitt

Mihai M Bulea

Matthew A Stevenson

Oscar Ayzenberg

A method includes obtaining a capacitive function of ground plane displacement and gap distance, and optimizing, using the capacitive function, an optimization function to obtain multiple slice lengths. The slice lengths correspond to multiple gap distances between a first sensor electrode and a second sensor electrode. The method further includes defining a sensor electrode shape using slice lengths and gap distances, defining a sensor electrode pattern based on the sensor electrode shape, and storing the sensor electrode pattern.

Engineering displacement response through electrode shape

A method and apparatus for applying a current to a shape memory alloy of an actuator; determining a first resistance of the shape memory alloy; determining, after measuring the first resistance, a second resistance of the shape memory alloy; performing a comparison between the first resistance and the second resistance to detect a resistance change; and ceasing, based on detection of the resistance change, application of the current to the shape memory alloy.

Method and apparatus for constant response from shape memory alloy

In a method of active pen signal detection, a signal is received from an active pen, wherein the active pen is configured for use with a capacitive sensing input device. At least one of downconverting and aliasing is performed on the signal to achieve a resulting signal. Presence of one of a plurality of possible resulting signal frequencies present in the resulting signal is detected. The detected resulting signal frequency is associated with a particular one of a plurality of possible transmission frequencies of the signal, and each of the plurality of transmission frequencies of the signal represents information about operation of the active pen.

Active pen signal detection

In a method of determining noise templates for use in capacitive sensing, a plurality of changes of capacitance are acquired, which include noise components, from a plurality of sensor electrodes in a sample capacitive sensor. Each of a plurality of substantially orthogonal noise templates is determined based on the acquired plurality of changes in capacitance. Multiple substantially orthogonal noise templates are selected, from the plurality of substantially orthogonal noise templates, to be used as a set of substantially orthogonal noise templates for reduction of the noise components of the acquired plurality of changes of capacitance.

Growing community of inventors

Oakland, CA, United States of America

Felix Schmitt