| 摘要 |
The present invention provides an inductive transmission system for inductive transmission of power and full duplex data signals between a first device ( 1 ) and a second device ( 2 ). The transmission system comprises: -a bi-directional inductive channel ( 6 ) between the first device ( 1 ) and the second device ( 2 ), -first transmission means ( 121 ) for transmitting a power signal at a first frequency from the first device ( 1 ) to the second device ( 2 ) over the inductive channel ( 6 )-a first modulating device ( 21 ) for modulating a first data signal at a first modulation frequency, -a second modulating device ( 15 ) for modulating a second data signal at a second modulation frequency, -second transmission means ( 124 ) for transmitting the modulated first data signals from the first device ( 1 ) to the second device ( 2 ) over the inductive channel ( 6 ), and for transmitting the modulated second data signals from the second device ( 2 ) to the first device ( 1 ) over the inductive channel ( 6 ), wherein the first modulation frequency and the second modulation frequency are at least a factor two apart, and wherein the transmission system furthermore comprises signal cancellation means or compensatio circuit for compensating for the sent data signal, providing a full duplex path without interference from the own sent signals at a device side.
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