{
  "$type": "site.standard.document",
  "description": "A wireless power transmitter including a reception unit configured to receive a foreign object detection (FOD) status packet from a wireless power receiver; and a transmission unit configured to transmit a response indicating whether a foreign object is present in a charging area of the wireless…",
  "path": "/patents/1358421",
  "publishedAt": "2024-01-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H02J50/60",
    "LG INNOTEK CO., LTD."
  ],
  "textContent": "A wireless power transmitter including a reception unit configured to receive a foreign object detection (FOD) status packet from a wireless power receiver; and a transmission unit configured to transmit a response indicating whether a foreign object is present in a charging area of the wireless power transmitter to the wireless power receiver, wherein the FOD status packet includes a mode bit field, wherein the mode bit field indicates whether the FOD status packet includes a reference peak frequency of the wireless power receiver, wherein the reference peak frequency is pre-allocated to the wireless power receiver, and wherein the response is determined using a measured peak frequency of a transmitted power signal and an adaptive threshold frequency based on the reference peak frequency included in the FOD status packet.",
  "title": "METHOD FOR DETECTING FOREIGN MATERIAL, AND DEVICE AND SYSTEM THEREFOR"
}