US 11,995,497 B1
Method of detecting magnetization signal of physically unclonable functions device and magnetization signal detection sensor
Joon-Hyun Kwon, Hwaseong-si (KR); Ji-Sung Lee, Suwon-si (KR); Han-Saem Lee, Seoul (KR); and Su-Jung Noh, Seoul (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Apr. 12, 2023, as Appl. No. 18/299,533.
Claims priority of application No. 10-2023-0003090 (KR), filed on Jan. 9, 2023.
Int. Cl. G06K 7/08 (2006.01); H04L 9/32 (2006.01)
CPC G06K 7/087 (2013.01) [H04L 9/3278 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of detecting a magnetization signal of a physically unclonable functions (PUF) device, comprising:
acquiring, by a magnetization signal detection sensor, an image of a magnetic layer of the PUF device including the magnetic layer having a perpendicular magnetization component; and
identifying, by a magnetization state detecting apparatus, a magnetization state of the magnetic layer from the image of the magnetic layer acquired by the magnetization signal detection sensor.