Oticon A/s

Other

Rasmus Glarborg Jensen

Kåre Tais Christensen

Michael Syskind Pedersen

Jan Mark De Haan

Andreas Thelander Bertelsen

Franz Treue

Matias Tofteby Bach

Jacob Midtgaard

Tommas Jess Christensen

John Nielsen

Gunnar Gudnason

Olfert Paul Paulsen

Jess Christensen

Kehuai Wu

Didier Clement

Morten Vested Olesen

The present disclosure provides methods and systems for reducing noise induced in one or more components in a hearing aid. The present disclosure provides methods for reducing noise induced in telecoils.

Noise reduction method and system

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 receiving antenna circuit is arranged in a reactive near-field of a modulated magnetic induction signal and forms a narrow band-pass filter. The output of the antenna circuit is not subjected to any frequency translation prior to digitizing, and the signal may nevertheless be digitized with low resolution, which radically reduces the power consumption of the receiving circuits. The reduction in power consumption is of several orders of magnitude, which allows implementation of such receiving circuits in battery-driven devices such as hearing devices without substantially affecting the battery life.

Receiver and method for retrieving an information signal from a magnetic induction signal

A wireless communication system includes a) a first device having a transmitter part with a Tx-antenna for transmitting an electrical signal having a signal bandwidth BWand b) a second device having a receiver part with an Rx-antenna for receiving the transmitted electromagnetic signal. At least one of the Tx- and Rx- antennas is a narrowband antenna having an antenna bandwidth BW, wherein the Tx- and/or Rx-antenna bandwidths fulfil the relation BW=k&#xb7;BW. The system is adapted to provide that k is smaller than 1.25, and the antenna bandwidth BWis defined as the &#x2212;3dB bandwidth of the loaded antenna when it is connected to the communication system, and the signal bandwidth BWis defined as the bandwidth within which 99% of the desired signal power is located.

Wireless communication system with a modulation bandwidth comparable to or exceeding the bandwidth of the transmitter and/or receiver antennas

In embodiments of the present invention improved capabilities are described for a communications facility that is adapted to communicate with at least one other mesh network node at a communication speed selected from a plurality of communication speeds.

Multi-speed mesh networks

Growing community of inventors

Smørum, Denmark

Rasmus Glarborg Jensen