{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "A power transmitter () for a wireless power transfer system comprises a transmitter coil () and a driver () generates a drive signal) for the transmitter coil () employing a repeating time frame with a power transfer time interval and a reduced power time interval during which a power level of the…",
  "path": "/patents/1279231",
  "publishedAt": "2020-12-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/60",
    "KONINKLIJKE PHILIPS N.V."
  ],
  "textContent": "A power transmitter () for a wireless power transfer system comprises a transmitter coil () and a driver () generates a drive signal) for the transmitter coil () employing a repeating time frame with a power transfer time interval and a reduced power time interval during which a power level of the power transfer signal is reduced. A driver () generates a drive signal for the transmitter coil () to generate the power transfer signal. A communicator () receives messages from the power receiver () and an adapter () adapts a timing property of the reduced power time interval in response to at least a first message received from the power receiver (). A synchronizer () for synchronizing a foreign object detection and the generation of a test signal to occur during the reduced power time interval. The operation may typically be a foreign object detection or communication, and the timing property may e.g. be a duration of the reduced power time interval.",
  "title": "WIRELESS POWER TRANSFER SYSTEM"
}