{
  "$type": "site.standard.document",
  "description": "A power transmission apparatus wirelessly transmits power to a power receiving device via a power transmission coil , measures a Q factor of the power transmission coil in the time domain, and determines presence or absence of an object (foreign object) different from the power receiving apparatus…",
  "path": "/patents/1342129",
  "publishedAt": "2023-04-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/80",
    "CANON KABUSHIKI KAISHA"
  ],
  "textContent": "A power transmission apparatus wirelessly transmits power to a power receiving device via a power transmission coil , measures a Q factor of the power transmission coil in the time domain, and determines presence or absence of an object (foreign object) different from the power receiving apparatus based on the Q factor measured in the time domain and a reference value of the Q factor which is based on information obtained from the power receiving apparatus .",
  "title": "POWER TRANSMISSION APPARATUS, POWER RECEIVING APPARATUS, CONTROL METHODS THEREOF, AND STORAGE MEDIUM"
}