SYSTEM AND METHOD FOR DISK DRIVE FLY HEIGHT MEASUREMENT

    公开(公告)号:US20240005956A1

    公开(公告)日:2024-01-04

    申请号:US18448737

    申请日:2023-08-11

    CPC classification number: G11B5/607 G11B5/6017

    Abstract: A system for determining a fly height includes a first head of a disk drive, a second head of the disk drive, a capacitive sensor circuit coupled to the first head and the second head, and a logic device coupled to the capacitive sensor circuit. The capacitive sensor circuit is configured to measure a first capacitance between the first head and the first disk, remove noise from the first capacitance using a second capacitance between the second head and the second disk, and based thereon determine a corrected first capacitance. The logic device is configured to determine the fly height between the first head and the first disk using the corrected first capacitance.

    Dynamic randomization of password challenge

    公开(公告)号:US11860993B2

    公开(公告)日:2024-01-02

    申请号:US17396137

    申请日:2021-08-06

    CPC classification number: G06F21/45 G06F21/31

    Abstract: A method of operating an electronic device includes generating scramble control codes. The scramble codes are generated by generating a random number, shifting the random number to produce a shifted random number, generating control signals by selecting different subsets of the shifted random number, and generating scramble control words by selecting different subsets of the random number based upon the control signals. The method further includes receiving a password comprised of sub-words and scrambling those sub-words according to the scramble control codes, retrieving a verification word comprised of sub-words and scrambling those sub-words according to the scramble control codes, and comparing the scrambled sub-words of the password to the scrambled sub-words of the verification word to thereby authenticate an external device that provided the password.

    PROCESSING SYSTEM, RELATED INTEGRATED CIRCUIT, DEVICE AND METHOD

    公开(公告)号:US20230409341A1

    公开(公告)日:2023-12-21

    申请号:US18312237

    申请日:2023-05-04

    CPC classification number: G06F9/4405 G06F21/64

    Abstract: In embodiments, a reset management circuit executes reset, configuration, and software runtime phases when a processing system is switched on, where one or more microprocessors start at respective start addresses. During the configuration phase, a circuit reads a boot record from a non-volatile memory and stores it to registers. The circuit sequentially reads data records of configuration data from the non-volatile memory and generates a write request for each data record to store the data of the respective data record to a second circuit with associated address data indicated in the respective data record. The processing system processes the boot record and boot configuration data provided by the second circuits to selectively start a predetermined microprocessor at a default start address or at a start address indicated by the boot configuration data, or start one or more microprocessors at respective start addresses as indicated by the boot record.

    THREE-PHASE POWER FACTOR CONTROLLER IMPLEMENTED WITH SINGLE-PHASE POWER FACTOR CORRECTION CONTROLLER

    公开(公告)号:US20230396155A1

    公开(公告)日:2023-12-07

    申请号:US17834174

    申请日:2022-06-07

    CPC classification number: H02M1/4216 H02M1/4225 H02M1/4233 H02M1/12

    Abstract: A PFC correction circuit includes first, second, and third phase inputs coupled to three-phase power mains, with a three-phase full-wave rectifying bridge connected to an input node. First, second, and third boost inductors are respectively connected between first, second, and third phase inputs and first, second, and third taps of the three-phase full-wave rectifying bridge. A boost switch is connected between the input node and ground, and a boost diode is connected between the input node and an output node. A multiplier input driver generates a single-phase input signal as a replica of a signal at the three-phase power mains after rectification. A single-phase power factor controller generates a PWM signal from the single-phase input signal. A gate driver generates a gate drive signal from the PWM signal. The boost switch is operated by the gate drive signal.

    Elements for in-memory compute
    129.
    发明授权

    公开(公告)号:US11829730B2

    公开(公告)日:2023-11-28

    申请号:US17940654

    申请日:2022-09-08

    CPC classification number: G06F7/57 G06F3/0604 G06F3/0659 G06F3/0673 G06N3/063

    Abstract: A memory array arranged in multiple columns and rows. Computation circuits that each calculate a computation value from cell values in a corresponding column. A column multiplexer cycles through multiple data lines that each corresponds to a computation circuit. Cluster cycle management circuitry determines a number of multiplexer cycles based on a number of columns storing data of a compute cluster. A sensing circuit obtains the computation values from the computation circuits via the column multiplexer as the column multiplexer cycles through the data lines. The sensing circuit combines the obtained computation values over the determined number of multiplexer cycles. A first clock may initiate the multiplexer to cycle through its data lines for the determined number of multiplexer cycles, and a second clock may initiate each individual cycle. The multiplexer or additional circuitry may be utilized to modify the order in which data is written to the columns.

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