Inductive charging
View Patent ↗There is provided a method including transmitting inductively a first signal, receiving inductively a second signal in response to the first signal, determining whether the inductively received signal includes a modulation, and adjusting a power of the transmitted signal on the basis of a modulation of the received signal.
1. A method comprising
transmitting inductively a first signal;
receiving inductively a second signal in response to the first signal;
determining whether the inductively received signal comprises a modulation;
adjusting a power of the transmitted signal on the basis of a modulation of the received signal, and;
decoding the modulation of the received signal and continuing the transfer of power when the decoding fails.
2. A method according to claim 1 comprising:
transmitting inductively a first signal;
receiving inductively a second signal in response to the first signal; and
transmitting inductively a third signal with a lower power than the first signal, when the received signal does not comprise a modulation.
3. A method according to claim 1 comprising:
decoding the modulation of the received signal;
identifying a device originating the received signal on the basis of a result of the decoding; and
determining a signal power to be used in inductive transmissions on the basis of the identified originating device.
4. A method according to claim 1 , comprising determining a modulation on the basis of a change in amplitude of the inductively received signal exceeding a threshold, wherein the threshold comprises a triggering threshold to determine values of data corresponding to a modulation.
5. An apparatus comprising:
a transmitter configured to transmit inductively a first signal;
a receiver configured to receive inductively a second signal in response to the first signal;
a controller configured to determine whether the inductively received signal comprises a modulation;
a controller configured to adjust a power of the transmitted signal on the basis of a modulation of the received signal; and
a controller configured to decode the modulation of the inductively received signal and continue the transfer of power when the decoding fails.
6. An apparatus according to claim 5 , comprising:
a controller configured to decode the modulation of the received signal;
identify a device originating the received signal on the basis of a result of the decoding; and
determine a signal power to be used in inductive transmissions on the basis of the identified originating device.
7. An apparatus according to claim 5 comprising a controller configured to determine a modulation on the basis of a change in amplitude of the inductively received exceeding a threshold, wherein the threshold comprises a triggering threshold to determine values of data corresponding to a modulation.