Oticon A/s

Bernafon Ag

Gunnar Gudnason

Michael Syskind Pedersen

Svend Oscar Petersen

Kåre Tais Christensen

Henning Knak Poulsen

Anders Erik Petersen

Rasmus Glarborg Jensen

Monika Bertges Reber

Dennis Presutti

Frank Engel Rasmussen

Gabriel Aldaz

Peter Søren Kirk Hansen

Seri Jalonen

Christian Müller

Jess Christensen

Poul Hilding Andersson

Jesko Lamm

Andreas Kofod-Hansen

Björn Legler

Lin Zhu

Xiaodong Liu

The disclosure presents a method of operating a switched capacitor voltage converter and a switched capacitor voltage converter, where the switched capacitor voltage converter comprises a power source, a bucket capacitance, an output capacitance with output capacitance terminals to be connected to a load and switches. The power source provides an input voltage and the output capacitance provides an output voltage over the output capacitance terminals. The output voltage is different from the input voltage, i.e higher or lower or of opposite polarity. The switches are configured to provide at least two phases, a bucket capacitance charging phase and a bucket capacitance discharging phase. In case of a voltage up-converter in the bucket capacitance charging phase the bucket capacitance is connected to the power source for charging the bucket capacitance while the bucket capacitance is not connected to the output capacitance. In a voltage down-converter in the bucket capacitance charging phase the bucket capacitance and the output capacitance are connected in series with the power source. In a voltage up-converter in the bucket capacitance discharging phase the bucket capacitance is connected in series with the power source for charging the output capacitance. In a voltage down-converter in the bucket capacitance discharging phase the bucket capacitance and the output capacitance are connected in parallel with each other while being disconnected from the power source. Further, a detection circuit is provided that is configured to monitor the output voltage over the output capacitance terminals and to cause switching of at least one of said switches so as to interrupt charging of the output capacitance when output voltage exceeds a predefined reference voltage.

Switched capacitor voltage converter for a rechargeable battery in a hearing aid

A portable hearing assistance device comprises an input unit, an output unit, a forward path between the input unit and the output unit, and an energy source for energizing components of the hearing assistance device. The hearing assistance device further comprises a control unit to control activation (or deactivation) of a low-power mode of operation of the hearing assistance device. When the low-power mode is activated&#x2014;the draw of current from said energy source is reduced compared to a normal mode of operation of the device, the activation (or deactivation) being influenced by a combination of at least two different control input signals to the control unit, each control input signal being a signal selected from 1) signals relating to current physical environment, 2) signals relating to current acoustic environment, 3) signals relating to current wearer state, and 4) signals relating to current state or operation mode.

Hearing assistance device with a low-power mode

A rechargeable battery is provided comprising a flexible elongate electron conductive core surrounded by a first electrochemically active layer, and a second electrochemically active layer, separated by a separation layer and where an electron conducting element contacts the outer surface of the second electrochemically active layer, whereby at least one of the two electrochemically active layers and the separation layer are comprised of thin-film layers. Further a hearing aid is provided wherein a battery comprising thin film layers is provided. Such a battery may be curled or wound to accommodate an irregular space inside the hearing aid.

Hearing aid with rechargeable battery and rechargeable battery

The present invention relates to a system () and method for driving an antenna (). The system () comprises a driving means () driving the antenna () with a driving signal. The system () further comprises a modulation means () having an input receiving a transmission data signal (), a data identification means () identifying a level change in the transmission data signal () and controlling duty cycle of the driving signal (). The data identification means () provides a timed increase of duty cycle of the driving signal () when the a level change in said transmission data is identified.

System and method for driving an antenna

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Smørum, Denmark

Gunnar Gudnason