US Patent Application 18223960. METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR simplified abstract
Contents
METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR
Organization Name
Inventor(s)
METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR - A simplified explanation of the abstract
This abstract first appeared for US patent application 18223960 titled 'METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR
Simplified Explanation
- The patent application describes a wireless power transmitter that can transmit power to a wireless power receiver. - The transmitter includes a wireless communication unit that can communicate with the receiver. - A controller is also included in the transmitter to process the received communication packets. - The wireless communication unit can receive various types of packets from the receiver, including foreign object detection (FOD) status, signal strength, end power transfer, power control hold-off, control error, renegotiation, eight-bit reception power, and charging status packets. - The controller uses the FOD status packet to determine if there is a foreign object present in the charging area of the transmitter. - If a foreign object is detected, the wireless communication unit sends a foreign object detection indicator to the receiver. - The FOD status packet contains information about a reference quality factor or a reference peak frequency. - The byte encoding technique used in the packets involves inserting a start bit, a stop bit, and a parity bit into an encoded binary bit stream of a packet with a length of 8 bits.
Original Abstract Submitted
A wireless power transmitter that transmits power to a wireless power receiver, the wireless power transmitter including a wireless communication unit configured to communicate with the wireless power receiver; and a controller, wherein the wireless communication unit receives a foreign object detection (FOD) status packet, and at least one of a signal strength packet, an end power transfer packet, a power control hold-off packet, a control error packet, a renegotiation packet, an eight-bit reception power packet, and a charging status packet to which a byte encoding technique is applied from the wireless power receiver, wherein the controller determines whether a foreign object is present in a charging area of the wireless power transmitter on the basis of the FOD status packet, wherein the wireless communication unit transmits, to the wireless power receiver, a foreign object detection indicator indicating whether the foreign object is present in the charging area of the wireless power transmitter on the basis of a result of the determination, wherein the FOD status packet includes information on a reference quality factor or a reference peak frequency, wherein the byte encoding technique is a technique of inserting a start bit, a stop bit, and a parity bit into an encoded binary bit stream of a packet having a length of 8 bits.
