Cypress Semiconductor Corporation

Parade Technologies, Ltd.

Other

Anton Konovalov

Viktor Kremin

Andriy Maharyta

Roman Ogirko

Oleksandr Pirogov

Andriy Yarosh

Roman Sharamaga

Haneef D Mohammed

Edward L Grivna

Hans Klein

Oleksandr Karpin

Ihor Musijchuk

Darrin Vallis

Yuriy Boychuk

A capacitance sensing system can filter noise that presents in a subset of electrodes in the proximity of a sense object (i.e., finger). A capacitance sensing system can include a sense network comprising a plurality of electrodes for generating sense values; a noise listening circuit configured to detect noise on a plurality of the electrodes; and a filtering circuit that enables a filtering for localized noise events when detected noise values are above one level, and disables the filtering for localized noise events when detected noise values are below the one level.

Noise filtering devices, systems and methods for capacitance sensing devices

A method for improving noise immunity of capacitive sensing circuit associated with a touch sense array is disclosed. The capacitive sensing circuit receives a response signal from a touch sense array. The capacitive sensing circuit measures a noise component of the response signal. When a level of noise of the noise component within a passband of the capacitive sensing circuit is greater than a threshold, the capacitive sensing circuit changes at least one parameter of capacitive sensing circuit to move the passband substantially outside the frequency spectrum of the noise component.

Method and apparatus to improve noise immunity of a touch sense array

Apparatuses and methods to reduce the influence of a noise signal on touch screen controllers are described. One apparatus includes a detector to determine a presence of a noise signal from a display coupled to a capacitive touch screen. The apparatus also includes a synchronization circuit to synchronize signals produced by a touch screen controller with the noise signal to reduce the influence of the noise signal on capacitance measurements by the touch screen controller.

Method and apparatus for reducing coupled noise influence in touch screen controllers

Methods and apparatus include receiving a current set of measurements of a touch sense array using a first functional block of a processing device and processing the current set of measurements using a second functional block to render a touch map corresponding to the touch sense array. The methods and apparatus include performing the next set of measurements using the first functional block. Performing the next set of measurements and processing the current set of measurement are performed substantially concurrently.

Method and apparatus for parallel scanning and data processing for touch sense arrays

A method and apparatus for reducing influence of noise for touch screen controllers employing noise listening synchronization, delay lines, filtering and sensing selected touch screen electrodes.

A touch sense controller configured to be coupled to a touch sense array is disclosed. The touch sense controller includes programmable logic that includes programmable logic elements configured to manage measurement of capacitance associated with the touch sense array.

Capacitive sensing with programmable logic for touch sense arrays

A parallel pipelining method of operation of a touch sense controller for processing data into a touch map is disclosed. A current full scan of response signals to at least one excitation of a touch sense array is received using a first thread of a processing device. The current full scan of response signals is processed using a second thread of the processing device to render a touch map corresponding to the touch sense array. A next full scan of response signals is received using the first thread. Receiving the next full scan and processing the current full scan are performed substantially simultaneously.

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Khmelnitsky, Ukraine

Anton Konovalov