EP 4025926 A2 20220713 - A SENSOR ARRAY FOR READING A MAGNETIC PUF
Title (en)
A SENSOR ARRAY FOR READING A MAGNETIC PUF
Title (de)
SENSORANORDNUNG ZUM LESEN EINES MAGNETISCHEN PUF
Title (fr)
RÉSEAU DE CAPTEURS POUR LA LECTURE D'UNE PUF MAGNÉTIQUE
Publication
Application
Priority
- US 201962896883 P 20190906
- US 201962942364 P 20191202
- US 2020049418 W 20200904
Abstract (en)
[origin: CN114341660A] A magnetic sensor array device is described that is composed of a plurality of single sensor dies that are individually cut out from a wafer and encapsulated in a multi-chip module (MCM). The device includes a multi-axis magnetic sensor array that, when placed on a circuit card, can measure a multi-dimensional magnetic field of a two-dimensional region of any size with high spatial resolution, reduced sensing distance, higher measurement throughput, tolerance to motion, improved temperature measurement, and increased yield, the circuit card includes part of an authentication system that includes a physical unclonable function ("PUT"), a substrate, a plurality of magnetized particles randomly dispersed in the substrate, and a PUT reader constructed using one or more magnetic sensor array devices, where the PUT reader measures a magnetic field at a plurality of locations proximate to the magnetized particles. The measured magnetic field data may be compared to previously registered data to assess reliability.
IPC 8 full level
G01R 33/00 (2006.01); G01R 33/06 (2006.01); G01R 33/12 (2006.01); H01L 21/00 (2006.01); H01L 27/00 (2006.01); H04L 9/32 (2006.01)
CPC (source: EP)
G01R 33/0052 (2013.01); G01R 33/0082 (2013.01); G01R 33/0094 (2013.01); G01R 33/0206 (2013.01); G01R 33/072 (2013.01); G01R 33/10 (2013.01); G06F 21/57 (2013.01); G06F 21/73 (2013.01); G06F 21/75 (2013.01); G06V 20/80 (2022.01); H04L 9/0866 (2013.01); H04L 9/3278 (2013.01); G01R 33/0023 (2013.01); G01R 33/1276 (2013.01); G06F 18/22 (2023.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
CN 114341659 A 20220412; CN 114341660 A 20220412; CN 114364991 A 20220415; EP 4025919 A2 20220713; EP 4025919 A4 20231101; EP 4025926 A2 20220713; EP 4025926 A4 20231108; EP 4025927 A2 20220713; EP 4025927 A4 20230920
DOCDB simple family (application)
CN 202080061695 A 20200904; CN 202080061933 A 20200904; CN 202080061934 A 20200904; EP 20860109 A 20200904; EP 20861493 A 20200904; EP 20866899 A 20200904