Fast data transmission for wireless power transfer systems
AssigneePowermat Technologies Ltd.
InventorsItay Sherman, Elieser Mach
Life of this patent
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Abstract
A power receiver is provided herein. The power receiver provides in-band communication with a power transmitter. The power receiver recognizes a change in frequency that identifies a training sequence and determines an impulse response with respect to the training sequence. The power receiver also cancels an effect of the impulse response during the in-band communication.
Claims18
A power receiver executing in-band communication with a power transmitter, the power receiver configured to:
- recognize a change in frequency that identifies a training sequence;
- determine an impulse response with respect to the training sequence;
- and
- cancel an effect of the impulse response during the in-band communication,
- wherein the power receiver is configured to monitor the in-band communication to detect an interval between peaks or a defined level of voltage of a capacitor of the power receiver or an inductor of the power receiver that correspond to the change in frequency.
A power receiver executing in-band communication with a power transmitter, the power receiver configured to:
- recognize a change in frequency that identifies a training sequence;
- determine an impulse response with respect to the training sequence;
- and
- cancel an effect of the impulse response during the in-band communication, herein the power receiver is configured to dynamically determine one or more impulse responses corresponding to one or more data packets received after the training sequence.
A power receiver executing in-band communication with a power transmitter, the power receiver configured to:
- recognize a change in frequency that identifies a training sequence;
- determine an impulse response with respect to the training sequence;
- and
- cancel an effect of the impulse response during the in-band communication,
- wherein the power receiver is configured to provide at least one packet to the power transmitter to trigger the change in the frequency and the training sequence.
A power receiver executing in-band communication with a power transmitter, the power receiver configured to:
- recognize a change in frequency that identifies a training sequence;
- determine an impulse response with respect to the training sequence;
- and
- cancel an effect of the impulse response during the in-band communication,
- wherein the power receiver is configured to determine a default interval before a reception of a first bit of a synchronization pattern.
A power receiver executing in-band communication with a power transmitter, the power receiver configured to:
- recognize a change in frequency that identifies a training sequence;
- determine an impulse response with respect to the training sequence;
- and
- cancel an effect of the impulse response during the in-band communication,
- wherein the power receiver is configured to collect one or more impulse responses for different bit combinations, determine correction values, and utilize the correction values as a threshold for decision for canceling the effect of the impulse response.
A power transmitter executing in-band communication with a power receiver, the power transmitter configured to:
- recognize a change in frequency that identifies a training sequence;
- determine an impulse response with respect to the training sequence;
- and
- cancel an effect of the impulse response during the in-band communication,
- wherein the power transmitter is configured to monitor the in-band communication to detect a value change with respect to a voltage or current amplitude or voltage or current phase on a primary coil or on a resonance capacitor of the power transmitter.
A power transmitter executing in-band communication with a power receiver, the power transmitter configured to:
- recognize a change in frequency that identifies a training sequence;
- determine an impulse response with respect to the training sequence;
- and
- cancel an effect of the impulse response during the in-band communication,
- wherein the change in frequency comprises a modulation based on load modulation achieved by connection of an ancillary load to a receiver resonance circuit or in parallel to a load of the power receiver.
Dependencies are inferred from the claim text.