POWER TRANSMITTER AND POWER RECEIVER FOR AN INDUCTIVE POWER SYSTEM
First Claim
1. Power transmitter for transmitting power inductively to a power receiver via transmitter coil, the power transmitter comprising:
- a first unit for receiving first data and second data from the power receiver, said first data indicating a modulation requirement, said second data indicating an inquiry message; and
a second unit for transmitting a response message to the power receiver via the transmitter coil, the response message being intended for responding to said inquiry message, said second unit comprising;
a modulator for modulating a power signal according to said modulation requirement when transmitting the response message.
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Accused Products
Abstract
A wireless inductive power transfer system comprises a power transmitter for transmitting power inductively to a power receiver via transmitter coil 11 to receiver coil 21. In the system, a communication method comprises a step 37 of transmitting, by the power receiver, first data and second data to the power transmitter, the first data indicating a modulation requirement, and the second data indicating an inquiry message; a step 32 for receiving, by the power transmitter, the first data and the second data from the power receiver, a step 34 for transmitting, by the power transmitter, a response message for responding to said inquiry message, by modulating a power signal according to said modulation requirement so as to carry the response message; and a step 35 for receiving the response message by the power receiver by demodulating the modulated power signal carrying the response message received via the receiver coil from the power transmitter.
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Citations
16 Claims
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1. Power transmitter for transmitting power inductively to a power receiver via transmitter coil, the power transmitter comprising:
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a first unit for receiving first data and second data from the power receiver, said first data indicating a modulation requirement, said second data indicating an inquiry message; and a second unit for transmitting a response message to the power receiver via the transmitter coil, the response message being intended for responding to said inquiry message, said second unit comprising; a modulator for modulating a power signal according to said modulation requirement when transmitting the response message. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Power receiver for receiving power inductively from a power transmitter via a receiver coil, the power receiver comprising:
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a first unit for transmitting first data and second data to the power transmitter, the first data indicating a modulation requirement, the second data indicating an inquiry message; and a second unit for receiving a response message from the power transmitter via the receiver coil, the response message being intended for responding to the inquiry message;
said second unit comprising;a demodulator for demodulating a power signal received by the receiver coil according to the modulation requirement when receiving the response message. - View Dependent Claims (8, 9, 10, 11, 12)
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13. Method of communicating in an inductive power transfer system, the system comprising a power receiver and a power transmitter, the power receiver comprising a receiver coil, the power transmitter comprising a transmitter coil, the method performed by the power transmitter comprising the steps of:
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receiving first data and second data from the power receiver, said first data indicating a modulation requirement, said second data indicating an inquiry message; transmitting a response message to the power receiver via the transmitter coil by modulating a power signal according to the modulation requirement, the response message being intended for responding to the inquiry message. - View Dependent Claims (14)
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15. Method of communicating in an inductive power transfer system, the system comprising a power receiver and a power transmitter, the power receiver comprising a receiver coil, the power transmitter comprising a transmitter coil, wherein the method performed by the power receiver comprises the steps of:
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transmitting a first data and a second data to the power transmitter, the first data indicating a modulation requirement, the second data indicating an inquiry message; receiving a response message from the transmitter via the receiver coil by demodulating a power signal received by the receiver coil according to the modulation requirement, the response message being intended for responding to the inquiry message. - View Dependent Claims (16)
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Specification