US Patent Application 18356047. METHOD FOR DETECTING FOREIGN MATERIAL, AND DEVICE AND SYSTEM THEREFOR simplified abstract
Contents
METHOD FOR DETECTING FOREIGN MATERIAL, AND DEVICE AND SYSTEM THEREFOR
Organization Name
Inventor(s)
METHOD FOR DETECTING FOREIGN MATERIAL, AND DEVICE AND SYSTEM THEREFOR - A simplified explanation of the abstract
This abstract first appeared for US patent application 18356047 titled 'METHOD FOR DETECTING FOREIGN MATERIAL, AND DEVICE AND SYSTEM THEREFOR
Simplified Explanation
The patent application describes a method for wireless power receivers to receive power from a wireless power transmitter.
- The method involves transmitting multiple packets to the wireless power transmitter, including a packet that detects the presence of foreign objects in the charging area.
- The wireless power receiver then receives a response signal from the wireless power transmitter indicating whether a foreign object is present.
- The response signal is determined by comparing the measured peak frequency of the power signal transmitted by the wireless power transmitter with a reference peak frequency included in the foreign object detection status packet received from the wireless power receiver.
- The plurality of packets also include other types of packets such as signal strength, end power transfer, power control hold-off, configuration, identification, extended identification, general request, special request, control error, renegotiation, received power, and charging status packets.
Original Abstract Submitted
A method of receiving power by a wireless power receiver, the method including transmitting, to a wireless power transmitter, a plurality of packets including a foreign object detection (FOD) status packet; and receiving, from the wireless power transmitter, a response signal indicating whether a foreign object is present in a charging area of the wireless power transmitter, wherein the response signal is determined using a measured peak frequency of a power signal transmitted by the wireless power transmitter and a reference peak frequency included in the FOD status packet received from the wireless power receiver, and wherein the plurality of packets further include at least one of a signal strength packet, an end power transfer packet, a power control hold-off packet, a configuration packet, an identification packet for transmitting receiver identification information, an extended identification packet, a general request packet, a special request packet, a control error packet, a renegotiation packet, a 24-bit received power packet, an eight-bit received power packet, and a charging status packet.
