公开(公告)号：US12276532B2

公开(公告)日：2025-04-15

申请号：US17319659

申请日：2021-05-13

Applicant: Renesas Electronics America Inc.

Inventor： Gustavo James Mehas ,  Damla Acar ,  Ashley De Wolfe ,  Pooja Agrawal ,  Nicholaus Wayne Smith

IPC: G01D5/20 ,  G06F3/03 ,  H04M1/02

Abstract: A method and a system may inductively determine a position of a display screen of a computing device. Associated processes may generate a magnetic field by providing an alternating current to a driver coil, and may generate a voltage at a sensor coil in response to the magnetic field. The system and method may additionally include determining a linear position of the display screen by executing an algorithm at a processor. An input to the algorithm may include voltage data associated with the voltage generated at the sensor coil. The linear position of the display screen may correspond to a size of the display screen between a minimum size and a maximum size.

公开(公告)号：US12034320B2

公开(公告)日：2024-07-09

申请号：US17321312

申请日：2021-05-14

Applicant: Renesas Electronics America Inc.

Inventor： Changjae Kim ,  Damla Acar ,  Adnan Dzebic ,  Pooja Agrawal ,  Sophia Yi

IPC: H04L29/06 ,  G06F21/30 ,  H02J7/00 ,  H02J50/10 ,  H02J50/80 ,  H04L9/08 ,  H04L9/32

CPC classification number: H02J7/00045 ,  G06F21/30 ,  H02J50/10 ,  H02J50/80 ,  H04L9/0869 ,  H04L9/3236 ,  H04L9/3239

Abstract: An authentication method for authenticating a wireless power transmitter to a wireless power receiver includes receiving a SSP value, an ID, and a random number RND from a wireless power receiver; determining an index based on the RND; choosing a base code from a set of base codes according to the index; determining a secure code from the base code, the index, the RND, the SSP value, and the ID; and transmitting the secure code to the wireless power receiver. A further method includes receiving a secure code from the wireless power transmitter; retrieving an index from the secure code; determining a base code from a set of base codes according to the index; calculating a second secure code; and authenticating the wireless power transmitter by comparing the secure code and the second secure code.

公开(公告)号：US20210384747A1

公开(公告)日：2021-12-09

申请号：US17321312

申请日：2021-05-14

Applicant: Renesas Electronics America Inc.

Inventor： Changjae Kim ,  Damla Acar ,  Adnan Dzebic ,  Pooja Agrawal ,  Sophia Yi

IPC: H02J7/00 ,  H02J50/10 ,  H02J50/80 ,  G06F21/30

Abstract: An authentication method for authenticating a wireless power transmitter to a wireless power receiver includes receiving a SSP value, an ID, and a random number RND from a wireless power receiver; determining an index based on the RND; choosing a base code from a set of base codes according to the index; determining a secure code from the base code, the index, the RND, the SSP value, and the ID; and transmitting the secure code to the wireless power receiver. A further method includes receiving a secure code from the wireless power transmitter; retrieving an index from the secure code; determining a base code from a set of base codes according to the index; calculating a second secure code; and authenticating the wireless power transmitter by comparing the secure code and the second secure code.