GENERATING PHYSICAL UNCLONABLE FUNCTION DATA FROM A TRANSISTOR OF A SEMICONDUCTOR DEVICE

    公开(公告)号:US20240113715A1

    公开(公告)日:2024-04-04

    申请号:US17956912

    申请日:2022-09-30

    申请人: Crossbar, Inc.

    发明人: Sung Hyun Jo

    摘要: A physical unclonable function (PUF) can be implemented on a transistor of an integrated circuit device to generate PUF data. A potential difference is supplied across a gate insulator to induce a conductive breakdown in the gate insulator material. Location of the conductive breakdown within the gate insulator and in relation to the source node and drain node can be highly unpredictable, randomly resulting in a higher gate-source current or higher gate-drain current, respectively. The gate-source or gate-drain current can be measured and digitized to generate the PUF data value from the transistor. Moreover, PUF data values generated from multiple transistors can be highly non-correlated and useful for a random data sequence for cryptographic applications and other security applications.

    POST-DRIVER WITH LOW VOLTAGE OPERATION AND ELECTROSTATIC DISCHARGE PROTECTION

    公开(公告)号:US20240088883A1

    公开(公告)日:2024-03-14

    申请号:US18517024

    申请日:2023-11-22

    发明人: Chin-Hua Wen

    摘要: A post-driver with low voltage operation and electrostatic discharge protection is provided. A post-driver structure includes a drive unit including a pull-up driver and a pull-down driver, a pad connected to an external resistance, and an output node connected between the pull-up driver and the pull-down driver. The output node is configured to connect to a comparator for impedance calibration of the drive unit. The post-driver structure also includes an operational amplifier connected to a first transistor and the pad in a closed loop configuration. The operational amplifier is further connected to a second transistor to form a current mirror circuit between the operational amplifier and the drive unit. The current mirror circuit replicates a voltage at the pad with a voltage at the output node for the impedance calibration.

    XX coupler for persistent current qubits

    公开(公告)号:US11664804B1

    公开(公告)日:2023-05-30

    申请号:US17585173

    申请日:2022-01-26

    申请人: Ryan J. Epstein

    发明人: Ryan J. Epstein

    摘要: Systems and methods are provided for coupling two qubits. A first persistent current qubit is fabricated with a first superconducting loop interrupted by a first Josephson junction isolated by a first inductor and a second inductor from a second Josephson junction. A second persistent current qubit is fabricated with a second superconducting loop interrupted by a third Josephson junction isolated by a third inductor and a fourth inductor from a fourth Josephson junction. Nodes defined by the Josephson junctions of the first qubit and their neighboring inductors are connected to corresponding nodes defined by the third Josephson junction and the third inductor via a first capacitor, with one pair of connections swapped such that the nodes are not connected to their respective corresponding nodes.

    Apparatus and method for transmitting data signal based on various transmission modes

    公开(公告)号:US10057090B2

    公开(公告)日:2018-08-21

    申请号:US15276515

    申请日:2016-09-26

    发明人: Madjid Hafizi

    摘要: A transmit driver or transmitter is provided to generate an output data signal based on different input modes, such as low speed (LS), full speed (FS), high speed (HS), and high speed interconnect (HSIC) modes of a Universal Serial Bus (USB) standard. The transmit driver includes a rail voltage generator for generating a rail voltage for a set of transmit driver slices based on the selected mode. The transmit driver includes a bias voltage generator for generating a bias voltage based on the selected mode for protecting transistors in the transmit driver slices from over-voltage stress. The transmit driver includes a predriver and level shifter for generating input signals for the transmit driver slices to set the output impedance of the transmit driver and the slew rate of the output data signal. The transmit driver includes an emphasis equalizer for providing controllable emphasis equalization to the output data signal.

    APPARATUS AND METHOD FOR TRANSMITTING DATA SIGNAL BASED ON VARIOUS TRANSMISSION MODES

    公开(公告)号:US20180091333A1

    公开(公告)日:2018-03-29

    申请号:US15276515

    申请日:2016-09-26

    发明人: Madjid Hafizi

    IPC分类号: H04L25/03

    摘要: A transmit driver or transmitter is provided to generate an output data signal based on different input modes, such as low speed (LS), full speed (FS), high speed (HS), and high speed interconnect (HSIC) modes of a Universal Serial Bus (USB) standard. The transmit driver includes a rail voltage generator for generating a rail voltage for a set of transmit driver slices based on the selected mode. The transmit driver includes a bias voltage generator for generating a bias voltage based on the selected mode for protecting transistors in the transmit driver slices from over-voltage stress. The transmit driver includes a predriver and level shifter for generating input signals for the transmit driver slices to set the output impedance of the transmit driver and the slew rate of the output data signal. The transmit driver includes an emphasis equalizer for providing controllable emphasis equalization to the output data signal.