Sennheiser Electronic Gmbh & Co Kg

Rolf Meyer

Axel Haupt

Axel Grell

André Michaelis

Wolfgang Niehoff

Gerrit Buhe

Jürgen Peissig

Juergen Peissig

Jens Wildhagen

Klaus-Michael Polten

Bernd Roth

Klaus Sanders

Heinz Kuehn

Katrin Huss

There is provided a wireless headphone unit having at least one electroacoustic transducer and a transmitting/receiving unit for wirelessly receiving first signals which contain audio signals to be reproduced on the electroacoustic transducer and a network identification unit for storing the network identification of the wireless headphone unit, wherein the transmitting/receiving unit is adapted for wirelessly transmitting the network identification of the headphone unit.

Wireless headphones and data transmission method

There is provided a transmitter for a wireless audio transmission system comprising at least one analog/digital converter unit for analog/digital conversion of the analog audio signals to be transmitted, at least one digital signal processing unit with a compressing/encoding device for compressing and encoding the digitized signal to be transmitted, a digital/analog converter unit for digital/analog conversion of the digital output signals of the digital signal processing unit into analog signals, and a transmitting unit for wirelessly transmitting the output signals of the digital/analog converter unit. There is further provided a receiver for a wireless audio transmission system comprising a receiving unit for receiving wirelessly transmitted analog HF signals, an intermediate frequency unit for mixing the HF signals onto intermediate frequency signals, at least one analog/digital converter unit for analog/digital conversion of the wirelessly received signals, at least one digital signal processing unit with an expanding/decoding device for expanding and decoding the signals digitised by the at least one analog/digital converter unit, and at least one digital/analog converter unit for converting the digital output signals of the digital signal processing unit into analog signals.

Transmitter and receiver for a wireless audio transmission system

There are proposed wireless headphones which have at least one electroacoustic transducer for the reproduction of audio signals, a receiver for receiving wirelessly transmitted audio data, an intermediate memory for putting the received audio data into intermediate storage, an audio decoding unit and a control unit. The audio data wirelessly received by the receiver are firstly buffered or put into intermediate storage in the intermediate memory. The control unit controls reading of the compressed audio data stored in the intermediate memory so that said data are passed to the audio decoding unit where the compressed audio data are decoded and then outputted by means of the electroacoustic transducers. Wireless transmission is effected at a higher speed than the reproduction of the stored audio signals.

Wire-free headset, portable media player

The invention is based on the idea of providing a detection device which is capable of distinguishing whether a microphone or audio signal processing arrangement connected thereto operates on an analog or digital basis. An analog or digital connection is selected in accordance with that determination procedure. Consequently there is provided a detection device which has a sensing device, a determining device and a selecting device. The sensing device senses an external signal fed to the detection device and forwards that signal to the determining device. The determining device determines whether the sensed external signal was transmitted by an analog or digital signal processing apparatus and transmits a corresponding determination signal to the selecting device. The selecting device then selects either an analog or a digital connection, in dependence on the determination signal.

Detection device

An information system for supplying a predetermined region with information includes a transmitter for transmitting information in digitally coded form and a hand-held device. The hand-held device includes a receiver for receiving the information transmitted by the transmitter, a digital memory device for storing the received information, a reproduction device for reproducing the stored information, in particular acoustically and/or optically, and an event detection device for detecting specific events, wherein, upon detection of an event from the stored information, the information which is assigned to the detected event is selected for reproduction.

Information system

An electronic data-processing system for communicating with at least one other device wherein when a processing program and data are transmitted collectively from one electronic data-processing system to another electronic data-processing system.

Growing community of inventors

Wennigsen, Germany

Rolf Meyer