公开(公告)号：US11831793B2

公开(公告)日：2023-11-28

申请号：US17107532

申请日：2020-11-30

Applicant: STMICROELECTRONICS DESIGN AND APPLICATION S.R.O. ,  STMicroelectronics S.r.l.

Inventor： Enrico Rosario Alessi ,  Mario Antonio Aleo ,  Karel Blaha ,  Pavel Vicek

IPC: H04L9/32 ,  H02J50/80 ,  H04W12/71

CPC classification number: H04L9/3278 ,  H02J50/80 ,  H04W12/71 ,  H04L2209/805

Abstract: A method for mutual authentication that includes establishing a first inductive coupling between a wireless-power receiver and a wireless-power transmitter to transfer power from the wireless-power transmitter to the wireless-power receiver by a power signal and using the power signal to transmit a first response to a physically unclonable function to the wireless-power transmitter. The method further including generating a second response to the physically unclonable function and communicating information derived from the second response to initiate a mutual authentication process between the wireless-power receiver and the wireless-power transmitter during a subsequent inductive coupling.

公开(公告)号：US11979704B2

公开(公告)日：2024-05-07

申请号：US17537263

申请日：2021-11-29

Applicant: STMICROELECTRONICS DESIGN AND APPLICATION S.R.O.

Inventor： Tomas Teply ,  Karel Blaha

IPC: H04R1/10 ,  H04R9/04 ,  H04R9/06

CPC classification number: H04R1/1025 ,  H04R1/1075 ,  H04R9/04 ,  H04R9/06 ,  H04R2420/07

Abstract: The present disclosure is directed to a device that includes a headphone speaker housing that includes a coil having a first terminal and a second terminal that is configured to operate in a sound generation mode and a battery charging mode. A class D amplifier circuit is configured to rectify in a battery charging mode and amplify in a sound generation mode, the class D amplifier is coupled to the first terminal and the second terminal of the coil. The class D amplifier including a first, second, third, and fourth switch, the first terminal coupled between the first and second switch, the second terminal coupled between the third and fourth switch. An audio generation circuit having a third terminal and a fourth terminal, the third terminal coupled between the first and third switch of the class D amplifier and the fourth terminal coupled between the second and fourth switch of the class D amplifier. A battery charging circuit coupled to the third terminal and the fourth terminal.

公开(公告)号：US20220173918A1

公开(公告)日：2022-06-02

申请号：US17107532

申请日：2020-11-30

Applicant: STMICROELECTRONICS DESIGN AND APPLICATION S.R.O. ,  STMicroelectronics S.r.l.

Inventor： Enrico Rosario Alessi ,  Mario Antonio Aleo ,  Karel Blaha ,  Pavel Vicek

IPC: H04L9/32 ,  H02J50/80 ,  H04W12/00

Abstract: A method for mutual authentication that includes establishing a first inductive coupling between a wireless-power receiver and a wireless-power transmitter to transfer power from the wireless-power transmitter to the wireless-power receiver by a power signal and using the power signal to transmit a first response to a physically unclonable function to the wireless-power transmitter. The method further including generating a second response to the physically unclonable function and communicating information derived from the second response to initiate a mutual authentication process between the wireless-power receiver and the wireless-power transmitter during a subsequent inductive coupling.