ANALOG OPTICAL LINK FOR A MOVEABLE ACTUATOR IN A DATA STORAGE SYSTEM

    公开(公告)号:US20230005504A1

    公开(公告)日:2023-01-05

    申请号:US17856321

    申请日:2022-07-01

    Abstract: Apparatus and method for transferring data in a data storage system, such as but not limited to a hard disc drive (HDD). An optical link is provided between an analog front end (AFE) of a data storage device controller circuit (SOC) and a preamplifier/driver circuit (preamp) mounted to a rotary actuator to transfer an analog domain signal. A selected component is extracted from the signal using a modulation element such as a micro-resonance ring (MRR) or a Mach-Zehnder Interferometer Modulation (MZM) device. The extracted component is forwarded to a processing circuit to facilitate a transfer of data between a local memory and a non-volatile memory (NVM). The optical link includes a flexible portion in a flex circuit affixed to the rotary actuator and which supports the preamp. Multiplexed read, write, and power control signals are concurrently transmitted via the optical link. The link can concurrently service multiple head-disc assemblies (HDAs).

    MULTI-SPECTRAL LIDAR
    34.
    发明申请

    公开(公告)号:US20230003849A1

    公开(公告)日:2023-01-05

    申请号:US17854560

    申请日:2022-06-30

    Inventor: Kevin A. Gomez

    Abstract: A light detection and ranging system can have a spectral module connected to a light emitter and a detector as part of an optical sensor. The spectral module can be configured to adjust from a first wavelength of light to a second wavelength of light to classify a downrange target. The spectral module can customize a ratio of wavelengths over time to filter false positives in a field of view.

    FREQUENCY ENCODING OF MULTIPLE IN-FLIGHT COHERENT PULSES

    公开(公告)号:US20220413110A1

    公开(公告)日:2022-12-29

    申请号:US17844227

    申请日:2022-06-20

    Abstract: Method and apparatus for light detection and ranging (LiDAR). In some embodiments, an emitter is used to emit a set of pulses to impinge a target, and a detector is used to detect a corresponding set of reflected pulses. Range information associated with the target is extracted using the reflected pulses. To compensate for doppler shift and enable more emitted pulses to be in-flight between the system and the target, a maximum expected doppler shift is determined, and the emitted pulses are provided with differential frequency intervals that are greater than the determined maximum expected doppler shift, such as a multiple (e.g., 2×) of the maximum expected doppler shift. In some cases, each in-flight pulse will have a unique frequency separated from all other pulse frequencies by at least the maximum expected doppler shift. Adaptive adjustments can be made such as increasing the differential frequency intervals for long distance targets.

    Pyramidal mirror laser scanning for lidar

    公开(公告)号:US11422237B2

    公开(公告)日:2022-08-23

    申请号:US16248555

    申请日:2019-01-15

    Abstract: An apparatus includes a detector and a light source configured to emit light. The apparatus further includes a disk with a set of prisms and that is configured to rotate, arranged to receive and direct the emitted light, and arranged to receive and direct backscattered light. The apparatus further includes a reflecting apparatus with multiple reflective facets and configured to rotate, arranged to reflect the emitted light, and arranged to reflect the backscattered light. A focusing apparatus is arranged to focus the backscattered light from the disk towards the detector.

    Silicon photonics based optical network

    公开(公告)号:US11233578B2

    公开(公告)日:2022-01-25

    申请号:US16862408

    申请日:2020-04-29

    Inventor: Kevin A. Gomez

    Abstract: Various implementations of network devices disclosed herein provide a method routing a data packet in an optical domain, the data packet including a first component or header and second component or routing information, stripping the first component or header from the data packet using a silicon photonic component, processing the first component or header in an electrical domain, and communicating the data packet without the first component or header to an optical delay line.

    Active power management
    40.
    发明授权

    公开(公告)号:US10558380B2

    公开(公告)日:2020-02-11

    申请号:US15232682

    申请日:2016-08-09

    Abstract: Systems and methods for active power management are described. In one embodiment, the systems and methods include obtaining power dissipation metrics for a plurality of components under one or more operating scenarios, generating a reference dissipation model based on the power dissipation metrics of the plurality of components, and implementing the reference dissipation model in a storage system to make component scheduling decisions in relation to power management of the storage system. In some embodiments, the storage system includes any combination of a hard disk drive, a solid state drive, a hybrid drive, and a system of multiple storage drives.

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