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    PHYSICAL UNCLONABLE FUNCTION CONFIGURATION AND READOUT
    1.
    发明申请
    PHYSICAL UNCLONABLE FUNCTION CONFIGURATION AND READOUT 审中-公开

    公开(公告)号：WO2022028927A1

    公开(公告)日：2022-02-10

    申请号：PCT/EP2021/070742

    申请日：2021-07-23

    Applicant: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY

    Inventor： HOLLAND, William ,  SPALDING, George ,  HURWITZ, Jonathan

    IPC: H04L9/08 ,  H04L9/32 ,  G06F17/18 ,  H04L2209/34 ,  H04L9/0866 ,  H04L9/3255 ,  H04L9/3278

    Abstract: The present disclosure relates to configuring at least one pair of devices in a physical unclonable function (PUF) apparatus and reading out at least one pair of devices for determining a persistent random PUF output. The pair of devices may be readout by measuring a physical difference between the devices/components caused by random manufacturing differences, which may then be used to determine a persistence random PUF output. Configuring the pair of devices includes measuring the random manufacturing difference and, based on that measurement, setting a readout condition for the pair of devices, which dictates aspects of the readout process that should be used for that pair of devices. Each time the pair of devices is readout in the future, it may be readout in accordance with the condition that was set at configuration.

    MONITORING A PHYSICAL UNCLONABLE FUNCTION
    2.
    发明申请
    MONITORING A PHYSICAL UNCLONABLE FUNCTION 审中-公开

    公开(公告)号：WO2022028928A1

    公开(公告)日：2022-02-10

    申请号：PCT/EP2021/070743

    申请日：2021-07-23

    Applicant: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY

    Inventor： SPALDING, George ,  HURWITZ, Jonathan ,  HOLLAND, William

    IPC: H04L9/32 ,  H04L9/08 ,  G06F11/3055 ,  G06F21/72 ,  G06F21/73 ,  G06K9/6215 ,  H04L2209/34 ,  H04L9/0866 ,  H04L9/3278

    Abstract: Physical Unclonable Functions, PUFs, are hardware devices designed to generate a number that is random (i.e., two identical PUFs should produce randomly different numbers from each other) and persistent (i.e., a PUF should consistently generate the same number over time). Over time, aspects of the PUF hardware may change or drift, which may ultimately cause the generated number to change, and therefore no longer be persistent. Failure to generate a persistent number may cause difficulties for other devices that rely on the persistence of the number generated by the PUF, for example as part of a cryptographic process. The present disclosure relates to monitoring over time the physical characteristics of the PUF that are used to generate its number, and thereby keep track of its reliability to generate a random number that is persistent. By monitoring PUFs in this way, it may be possible to detect in advance a PUF that is at risk of generating a number that is no longer persistent, so that pre-emptive action may be taken before the PUF actually fails.

    DC SIGNAL MEASUREMENT AND BATTERY FORMATION/TESTING
    3.
    发明公开
    DC SIGNAL MEASUREMENT AND BATTERY FORMATION/TESTING 审中-公开

    公开(公告)号：EP3974847A1

    公开(公告)日：2022-03-30

    申请号：EP21199063.5

    申请日：2021-09-27

    Applicant: Analog Devices International Unlimited Company

    Inventor： YE, Shaoli ,  KELSO, Gina ,  LATH, David ,  HOLLAND, William ,  O DONNELL, John

    IPC: G01R27/28 ,  G01R31/385 ,  G01R35/00 ,  H01M10/44

    Abstract: The disclosure relates to accurately determining a DC energy signal, such as a DC current or DC voltage, which may be particularly useful when controlling a formation/testing current of a battery cell during formation and/or testing. In the battery formation/testing context, a current sensor is used to measure the current of the battery cell, which is used as a feedback signal for controlling the current to achieve a target current. The transfer function of the current sensor is used to improve the accuracy of the current measurement. Because the transfer function can be regularly determined during formation/testing, a lower-cost current sensor with relatively poor temperature coefficient may be used. Any change in the gain of the current sensor may be detected by the transfer function determination and corrected for. Therefore, high current control accuracy may be achieved at lower cost.

    DC SIGNAL MEASUREMENT
    6.
    发明公开
    DC SIGNAL MEASUREMENT 审中-实审

    公开(公告)号：EP4366029A2

    公开(公告)日：2024-05-08

    申请号：EP24160516.1

    申请日：2021-09-27

    Applicant: Analog Devices International Unlimited Company

    Inventor： YE, Shaoli ,  KELSO, Gina ,  LATH, David ,  HOLLAND, William ,  O'DONNELL, John

    IPC: H01M10/44

    CPC classification number: G01R31/385 ,  G01R27/28 ,  G01R35/00 ,  G01R31/3865 ,  H01M10/48 ,  H01M10/0525 ,  Y02E60/10

    Abstract: The disclosure relates to accurately determining a DC energy signal, such as a DC current or DC voltage, which may be particularly useful when controlling a formation/testing current of a battery cell during formation and/or testing. In the battery formation/testing context, a current sensor is used to measure the current of the battery cell, which is used as a feedback signal for controlling the current to achieve a target current. The transfer function of the current sensor is used to improve the accuracy of the current measurement. Because the transfer function can be regularly determined during formation/testing, a lower-cost current sensor with relatively poor temperature coefficient may be used. Any change in the gain of the current sensor may be detected by the transfer function determination and corrected for. Therefore, high current control accuracy may be achieved at lower cost.

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