Freescale Semiconductor,inc.

Nxp Usa, Inc.

Lawrence T Roshak

Bryce T Osoinach

Nicusor Penisoara

Razvan-Mihai Lucaci

Victor Berrios

Craig R Teegarden

A system that holds a liquid such as water includes an electrode coupling the system to a surface. A capacitance sensor is coupled to the electrode. A processor is coupled to the capacitance sensor. The processor is adapted to receive a signal from the capacitance sensor to determine whether the liquid is present at the surface and to send one or more indication signals if liquid is present at the surface. A response circuit coupled to the processor causes the system to take responsive action in response to receipt of an indication signal. Responsive action includes causing the system to perform a failsafe action, such as automatic shutdown. A communication circuit notifies a user that a fault has occurred in the system over a network.

Leak detector using capacitance sensor

A capacitive touch pad includes an electrode board, a plurality of capacitive touch sensor pads, and a cover. The electrode board has touch sensor circuitry formed thereon. The plurality of capacitive touch sensor pads is formed in an array over the touch pad circuitry of the printed circuit board. The plurality of capacitive touch sensor pads is spaced apart by a predetermined distance to form spaces between the pads of the plurality of capacitive touch sensor pads. The cover is positioned over and covering substantially all of the plurality of capacitive touch sensor pads. The cover has a first cavity with a first depth, where the first cavity is shaped to form an air gap between the pads of the plurality of capacitive touch sensor pads to dampen capacitive coupling between adjacent touch pads.

Capacitive touch pad with adjacent touch pad electric field suppression

A touch pad controller includes a voltage generator and a selector circuit. The voltage generator has a plurality of output terminals, each of the plurality of output terminals for being coupled to a corresponding pad of a plurality of capacitive touch pads. The voltage generator provides a predetermined voltage to each of a plurality of touch pads in a predetermined sequence. The selector circuit has a plurality of input terminals. Each input terminal of the plurality of input terminals is coupled to an output terminal of the plurality of output terminals of the voltage generator. The selector circuit sequentially couples each output terminal of the plurality of output terminals of the voltage generator to a touch pad shield for charging the touch pad shield to the predetermined voltage.

Touch sensor controller for driving a touch sensor shield

A device for transmitting data in a wideband wireless network. The device may include a transmitter for transmitting data via a channel of the wideband wireless network, the transmitter is arranged to start the transmitting in response to a start signal. A first transmission controller is connected to the transmitter, for controlling transmission of data by the transmitter. The transmission controller includes an energy detector for detecting the amount of energy in the channel. The energy detector is arranged to repeat the detecting in response to a repeat signal. A comparator is connected to an output of the energy detector and to a control input of the transmitter. The comparator is arranged to compare the detected amount of energy with an energy threshold, to output the repeat signal to the energy detector in case the detected amount of energy exceeds the energy threshold; and to output the start signal to the transmitter when the detected amount of energy is below the energy threshold.

Growing community of inventors

Chandler, AZ, United States of America

Lawrence T Roshak