Apple Inc.

Illinois Tool Works Inc.

Michael A Lehr

Stuart K Neubarth

Henry Hung Yang

Peter Gefter

Scott J Gehlke

David MacNeil

Hari Vasudevan

Wesley Scott Smith

Krishna Prasad Vummidi Murali

An electronic device can include a force and touch sensing system. In one embodiment, an input force sensor device of an electronic device is disclosed.

Pressure-based force and touch sensing

An electronic device may include one or more low-noise pressure sensors for measuring air pressure. The electronic device may include wireless communications circuitry for communicating with external devices also having pressure sensors. Pressure data gathered by an external device may be used as reference pressure data for the electronic device. For example, if both devices are located in the same building, both pressure sensors will detect similar pressure fluctuations due to doors opening and closing and temperature-control systems turning on and off. By subtracting the reference pressure data from the pressure data gathered by the electronic device, calibrated pressure data may be obtained and may be used to reliably detect vertical displacement changes of the electronic device. In other scenarios, the pressure data may be compared with the reference pressure data to determine whether the two devices are in the same room.

Electronic devices with low-noise pressure sensors

A high voltage power supply for a static neutralizer is disclosed. The high voltage power supply includes a resonant converter and a load with an emitter module having an emitter, reference electrode, and a capacitance value. The resonant converter is disposed to have a resonant frequency and an output coupled to the load. The resonant converter generates an output waveform with an amplitude sufficient for generating to ions by corona discharge when the load receives the output waveform. The load is predominantly capacitive when the resonant converter is operating at the resonant frequency.

High voltage power supply for static neutralizers

Growing community of inventors

Mountain View, CA, United States of America

Michael A Lehr