APPARATUS AND METHOD FOR INCORPORATING MULTI-ACTUATOR HARD DISK DRIVES INTO TRADITIONAL RAID ARRAYS

    公开(公告)号:US20210124641A1

    公开(公告)日:2021-04-29

    申请号:US16678810

    申请日:2019-11-08

    Abstract: A method for operating a storage controller to write to a group of multi-actuator disk drives includes receiving a data stream, performing RAID mapping to a preselected RAID level, organizing the data stream into at least one data stream, creating at least one parity data stream, organizing each data stream and parity data stream into blocks of data, dividing each data stream and each parity data stream into groups of blocks of data assigned to a logical unit representing a drive and an actuator, blocks of data from a data stream and parity stream assigned to a different drive, sequential groups of blocks of data assigned substantially equally to logical units representing actuators in each drive, providing each group of blocks of data to a target port associated with the drive to which it has been assigned, and sending each group of blocks of data from the target port.

    Memory Controller and Method for Decoding Memory Devices with Early Hard-Decode Exit

    公开(公告)号:US20210028795A1

    公开(公告)日:2021-01-28

    申请号:US16790547

    申请日:2020-02-13

    Abstract: A method and apparatus for decoding are disclosed. The method includes receiving a first Forward Error Correction (FEC) block of read values, starting a hard-decode process in which a number of check node failures is identified and, during the hard-decode process comparing the identified number of check node failures to a decode threshold. When the identified number of check node failures is not greater than the decode threshold the hard-decode process is continued. When the identified number of check node failures is greater than the decode threshold, the method includes: stopping the hard-decode process prior to completion of the hard-decode process; generating output indicating that additional reads are required; receiving one or more additional FEC blocks of read values, mapping the first FEC block of read values and the additional FEC blocks of read values into soft-input values; and performing a soft-decode process on the soft-input values.

    Analog Switch For Transmitting High Voltage Signals Without Utilizing High Voltage Power Supplies
    49.
    发明申请
    Analog Switch For Transmitting High Voltage Signals Without Utilizing High Voltage Power Supplies 审中-公开
    用于在不使用高压电源的情况下传输高电压信号的模拟开关

    公开(公告)号:US20160191036A1

    公开(公告)日:2016-06-30

    申请号:US14919000

    申请日:2015-10-21

    CPC classification number: H03K17/063 A61B8/4444 H03K17/693 H03K2217/0009

    Abstract: Described herein are multiple designs for an improved analog switch for use in transmitting high voltage signals without using high voltage power supplies for the switch. The analog switches are able to pass and block input signals in the approximate range of −100V to +100V. The use of translinear loops and a bootstrap configuration results in a constant on-resistance of the symmetrical switches and matches the conductance of each analog switch to the transconductance of an NMOS transistor, which can be easily stabilized with a constant gm biasing scheme. In certain embodiments, a shunt termination (T-switch) configuration is used for better off-isolation, and each of the symmetrical switches has its own translinear loop and thus flexibility of on-resistance and termination voltage.

    Abstract translation: 这里描述了用于在不使用用于开关的高压电源的情况下传输高电压信号的改进的模拟开关的多种设计。 模拟开关能够通过和阻止输入信号在-100V至+ 100V的近似范围内。 使用跨线性回路和自举配置导致对称开关的导通电阻恒定,并将每个模拟开关的电导与NMOS晶体管的跨导相匹配,这可以通过恒定的gm偏置方案进行稳定。 在某些实施例中,分流端接(T开关)配置用于更好的非隔离,并且每个对称开关具有其自己的横向线性环路,并因此具有导通电阻和终止电压的灵活性。

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