Cypress Semiconductor Corporation

Qualcomm Incorporated

Jon Pearson

Kenneth Y Ogami

Guozhong Shen

Doug Anderson

John McDonald

Douglas H Anderson

Trishabh Chadda

A touch panel controller is disclosed herein. The controller includes output circuitry for driving a touch panel sensor and input circuitry for determining when an object performs a touch event over the touch panel sensor. The controller is configured to cause the output circuitry to generate drive signals having a different frequency characteristic when the controller determines noise present within the sensor is above a noise threshold. The controller communicates with a software device driver on a host processor to store signal baseline images for a range of frequencies during production test and power-up. The controller is configured to receive a signal baseline image from the host processor when the controller causes change to a different drive frequency. The controller is configured to cause change to the different drive frequency while the object is still performing the touch event over the touch panel sensor.

Touch panel controller integrated with host processor for dynamic baseline image update

Techniques are described for testing a capacitive touch panel for the presence or absence of discontinuities. A pixel matrix is determined for a capacitive touch panel. The pixel matrix comprises pixel values representative of mutual capacitance of respective pixels of the capacitive touch panel. A difference matrix is generated from the pixel matrix. The difference matrix contains differences in pixel values for respective pixels of the capacitive touch panel with respect to pixel values of adjacent pixels. A determination may then be made from the difference matrix whether respective ones of the pixels of the capacitive touch panel contain a discontinuity.

Differential pixel test for capacitive touch screens

A processing device programming system automatically provides a user interface comprising a selectable list of one or more processing devices based on a system level solution, automatically generates an embedded programmable system solution from the system level solution and a processing device selected from the selectable list of one or more processing devices, and automatically programs the processing device according to the embedded programmable system solution.

Model for a hardware device-independent method of defining embedded firmware for programmable systems

A method and an apparatus to design a processing system using a graphical user interface (GUI) are described. The method includes allowing a user to define a transfer function via a GUI. The method may further include submitting the transfer function to a processing device maker associated with a processing device. The processing device maker may generate processing device code without intervention by the user. Furthermore, the processing device may execute the processing device code to perform the transfer function defined.

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Mukilteo, WA, United States of America

Jon Pearson