Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2003-09-17
2008-07-15
Maung, Nay (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S575100, C455S569100, C381S370000, C381S376000, C379S430000
Reexamination Certificate
active
07400914
ABSTRACT:
Wireless headphones operated by a storage battery and having a connector socket for the insertion of a charge plug of an electric connection into a power pack. The headphones further have at least one miniature loudspeaker, audio electronics, a reception part, and charging electronics to monitor the charging process of the storage battery. In order to be able to use the headphones even with a dead storage battery, a socket is provided for the insertion of a signal plug of an electrical connection with an audio device for the transmission of signals. The audio electronics conduct only the signals received via the signal plug to the loudspeakers when the signal plug is inserted.
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AKG Acoustics GmbH
Kueffner Friedrich
Maung Nay
Wendell Andrew
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