Stmicroelectronics Gmbh

Medacoustics, Inc.

Cal T Swanson

Vincent Himpe

Michael Zigmund Sleva

Simon J Lewandowski

Charles E Chassaing

Allen C Eberhardt

Richard Triolo

John F Lemke

Circuits and methods for supplying a temporary power supply at a predetermined voltage. A circuit includes a first DC/DC voltage converter that receives an input from a power supply at a first voltage level and generates an output at a second voltage level, higher than the first voltage level. The output is provided to charge a capacitor. A second DC/DC voltage converter has an input connected to the capacitor for drawing power from the capacitor at the second voltage level and generating an output voltage less than the second voltage level. The second DC/DC voltage converter further includes a feedback input that monitors the circuit's output voltage and activates the second DC/DC voltage converter when the output voltage falls below a predetermined threshold.

Constant voltage discharge device

Circuits and methods for supplying a temporary power supply at a predetermined voltage are disclosed. A circuit includes first DC/DC voltage that receives an input from a power supply at a first voltage level and generates an output at a second voltage level, higher than the first voltage level. The output is provided to charge a capacitor. A second DC/DC voltage converter has an input connected to the capacitor for drawing power from the capacitor at the second voltage level and an generates an output voltage less than the second voltage level. The second DC/DC voltage converter further includes a feedback input that monitors the circuit's output voltage and activates the second DC/DC voltage converter when the output voltage falls below a predetermined threshold.

A low profile acoustic array () is configured to selectively respond to shear waves while rejecting compression wave energy in the frequency range of interest. One sensor array is configured as a linear strip with a frame segment having at least one longitudinally extending rail and a plurality of sensor elements () extending therefrom. These sensor elements have a resilient core and opposing PDVF outer layers configured with opposing polarities onto the core. The linear strip array also includes a pair of separate electrical signal transmission paths. The transmission lines can include a series of undulations formed thereon to help minimize undesired mechanical crossover between sensors. A carrier member can be configured to be detachably releasable carries the discrete sensors to maintain the positional alignment until they are secured to a patient.

Low profile acoustic sensor arry and sensors with pleated transmission lines and related methods

Circuits and methods for generating a reset signal are disclosed. A reset driver circuit receives a reset signal from a circuit, e.g., a reset generator and an input signal indicative of a required characteristic of a reset signal for a second circuit. The reset driver compares a characteristic of the reset signal with the input signal indicative of a required characteristic of a reset signal for a second circuit and generates an output signal that includes the required characteristics of the reset signal for a second circuit. A reset driver circuit may be placed in a communication path between a conventional reset generator and a second circuit that requires a reset signal.

Reset driver circuits and methods

A thin film piezoelectric polymer acoustic sensor for the passive detection of heart and blood flow sounds is described. Sensors may have initially slack film components which are tented by the mass of a housing when a sensor is positioned on acoustic medium. Enhanced sensor performance is provided by accommodation of the sensor spring constant to the spring constant of human flesh. Sensor performance may be enhanced by a combination of physical parameter ranges. A plurality of sensors may compose a linear array or an array aperture.

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Apex, NC, United States of America

Cal T Swanson