公开(公告)号：WO2019036061A1

公开(公告)日：2019-02-21

申请号：PCT/US2018/015581

申请日：2018-01-26

Applicant: APPLE INC.

Inventor： GARBUS, Brandon, R. ,  CZAPAR, Matthew, G.

IPC: H02J50/80 ,  H04L29/06

Abstract: Multiple wireless power receiving devices operating in accordance with potentially different wireless charging protocols may be placed on a wireless power transmitting device. The wireless power transmitting device sends a frequency-shift-keying packet. If a wireless power receiving device is compliant with a first wireless charging protocol, the device responds to the frequency-shift-keying packet with an amplitude-shift-keying response packet. If the wireless power receiving device is compliant with a second wireless charging protocol, the wireless power receiving device will fail to respond to the frequency-shift- keying packet and the wireless power transmitting device responds by stopping and starting wireless power transmission and awaiting an amplitude-shift-keying packet from the wireless power receiving device in accordance with the second wireless charging protocol.

公开(公告)号：WO2019118137A1

公开(公告)日：2019-06-20

申请号：PCT/US2018/062000

申请日：2018-11-20

Applicant: APPLE INC.

Inventor： MALKIN, Moshe, H. ,  AGARWAL, Manu ,  GARBUS, Brandon, R.

IPC: H04B1/10 ,  H02J50/10

Abstract: A wireless power transmitting device transmits wireless power signals modulated at a given power frequency to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data signals to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data. The data receiver may include an input stage, bandpass filter circuitry, demodulator circuitry, and a data stream combiner. The data receiver may further include a power supply noise cancellation circuit. The power supply noise cancellation circuit may include an input stage, a baseband filter, a window filter, a down-sampler, and a difference filter. The power supply noise cancellation circuit may be coupled to the data stream combiner and is configured to mitigate power supply noise interference in the received data.