Abstract: A method of testing a motor of a robot arm for a fault during a start-up procedure of the robot arm. The robot arm comprises a first link connected to a second link by a joint, the joint permitting the second link to move relative to the first link. The motor is for driving the joint and is a multiple-phase motor, each phase of the motor comprising a motor winding and a motor drive circuit for applying power to the motor winding from a power supply rail and for applying drive signals to the motor winding.

Abstract: The invention generally relates to power converters, and more particularly to a communications method for controlling at least one power switching device of a power converter, a communications system for a power converter, and a power converter comprising the communications system.

Abstract: The application generally relates to apparatus for driving high voltage power switching devices such as IGBTs.

Abstract: The invention generally relates to power converters, and more particularly to a communications method for controlling at least one power switching device of a power converter, a communications system for a power converter, and a power converter comprising the communications system.

Abstract: A method of projected capacitance touch sensing on a display includes updating the display by applying a drive waveform to each pixel of the display over a plurality of frame periods to update a pixel state. The updating includes selecting each row of the display in turn and repeating a frame update to drive pixels with successive time slices of the drive waveforms. The method further includes sensing a signal from a projected capacitance touch sensing electrode of the display during a sensing interval to provide a touch sensing response; identifying when column drive levels of the drive waveforms for pixels of one selected row change by more than a threshold level between the selected row and a next selected row; and inhibiting the touch sensing responsive to the column drive row change signal indicating a greater than the threshold level change of the drive levels between the selected rows.

Abstract: The application generally relates to apparatus for driving high voltage power switching devices such as IGBTs.

Abstract: A method of projected capacitance touch sensing on a display screen, the method comprising: updating said display screen by applying a drive waveform to each pixel of the display screen over a plurality of frame periods, wherein a said drive waveform for a pixel defines a transition of the pixel from a current pixel state to an updated pixel state over said plurality of frame periods, and wherein said updating comprises selecting each row of said display screen in turn for a row driving period and driving columns of the display screen with a time slice of drive waveforms for pixels of the row to perform a frame update of said display screen, and repeating said frame update to drive pixels of said display with a plurality of successive time slices of said drive waveforms to drive said pixels with said drive waveforms; sensing a signal from a projected capacitance touch sensing electrode of said display screen during a sensing interval, and using said sensing to provide a touch sensing response; identifying whe