Access Business Group International LLC

Other

Philips IP Ventures B.v.

A Esai Umenei

Joshua K Schwannecke

David W Baarman

Matthew J Norconk

Colin J Moore

Benjamin C Moes

Robert D Gruich

Scott A Mollema

Joshua B Taylor

Thomas Jay Leppien

John James Lord

Bradley J Pippel

Michael E Miles

Neil W Kuyvenhoven

Ryan D Schamper

Dale R Liff

Karlis Vecziedins

Joseph C Van Den Brink

Mark C Smith

Jason L Amistadi

Ziqi Wu

Mark A Blaha

Andrew C Zeik

Ronald L Stoddard

Mark S Bartrum

David S Vachon

An acoustic module with a transducer and a solid waveguide. The transducer and waveguide may be curved to focus the acoustic energy along a focal line. The transducer, the top surface of the waveguide and the bottom surface of the waveguide may extend along coaxial curves. The waveguide may include a recess closely receiving the transducer. The waveguide may include an integral skirt that provides a thermal mass. The acoustic module may include a space to accommodate thermal management options. For example, the acoustic module may include a heatsink, an active ventilation system and/or a phase change material. The ultrasound device may include a controller configured to perform a uniformity scan sweep during supply of operating power to the transducer. The uniformity scan sweep can extend through a frequency range that includes the operating point of the acoustic module and does not exceed an acceptable efficiency loss.

Acoustic module and control system for handheld ultrasound device

A remote device in accordance with the present invention includes an adaptive power receiver that receives wireless power from the wireless power supply by induction. The adaptive power receiver may be switched among two or more modes of operation, including, for example, a high-Q mode and a low-Q mode. By controlling the switching between modes, the amount of energy received by the adaptive receiver may be controlled. This control is a form of adaptive resonance control or Q control.

Wireless power control

A system and method of controlling inductive power transfer in an inductive power transfer system and a method for designing an inductive power transfer system with power accounting. The method of controlling inductive power transfer including measuring a characteristic of input power, a characteristic of power in the tank circuit, and receiving information from a secondary device. Estimating power consumption based on the measured characteristic of tank circuit power and received information and comparing the measured characteristic of input power, the information from the secondary device, and the estimated power consumption to determine there is an unacceptable power loss. The method for designing an inductive power transfer system with power accounting including changing the distance between a primary side and a secondary side and changing a load of the secondary side. For each distance between the primary side and the secondary side and for each load, measuring a circuit parameter on the primary side in the tank circuit and a circuit parameter on the secondary side during the transfer of contactless energy. The method further including selecting a formula to describe power consumption in the system during the transfer of contactless energy based on coefficients and the circuit parameters, and determining the coefficients using the measured circuit parameters.

Input parasitic metal detection

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Grand Rapids, MI, United States of America

A Esai Umenei