EP 2056626 B1 20120725 - Wireless transmission principle
Title (en)
Wireless transmission principle
Title (de)
Drahtloses Übertragungsverfahren
Title (fr)
Principe de transmission sans fil
Publication
Application
Priority
EP 07119861 A 20071102
Abstract (en)
[origin: EP2056626A1] This invention relates to a hearing aid system having a communication unit for inductively transmitting and receiving signals. The communication unit comprises an active unit, which is excited by a data stream signal. The data stream drives an inductive antenna in a transmission state by means of a first inductor coupled to the antenna. Further, the communication unit comprises a frequency determining unit coupled to the antenna by means of a second inductor and controlling transmission frequency in the transmission state and to provide received signals to a receiver front end in a reception state. The data stream signal is disabled during said reception state.
IPC 8 full level
H04R 25/00 (2006.01)
CPC (source: EP)
H04R 25/554 (2013.01); H04R 25/558 (2013.01); H04R 2225/51 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2056626 A1 20090506; EP 2056626 B1 20120725; DK 2056626 T3 20121022
DOCDB simple family (application)
EP 07119861 A 20071102; DK 07119861 T 20071102