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    CURRENT SUPPLY FOR AN OPTO-ELECTRONIC DEVICE
    1.
    发明申请
    CURRENT SUPPLY FOR AN OPTO-ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20190334742A1

    公开(公告)日：2019-10-31

    申请号：US15965760

    申请日：2018-04-27

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： Clinton Harold Parker ,  Zhubiao Zhu ,  Daniel Alan Berkram

    IPC: H04L25/02 ,  H03K17/06 ,  H03K17/687

    Abstract: A device, including a first current supply configured to provide a bias current to a load and a main current supply having a source terminal coupled in parallel with the load and configured to reduce a current value to the load below the bias current, is provided. The device includes a termination resistor coupled in series with the source terminal of the main current supply and configured to receive current from the source terminal of the main current supply when the source terminal of the main current supply is activated. The device also includes an auxiliary current supply having a sink terminal coupled to the termination resistor at a common node, and configured to maintain the common node at common mode voltage when current flows from the source terminal of the main current supply to the sink terminal of the auxiliary current supply and through the termination resistor.

    COMMON-MODE CURRENT ADJUSTMENT IN A RECEIVER
    2.
    发明公开
    COMMON-MODE CURRENT ADJUSTMENT IN A RECEIVER 审中-公开

    公开(公告)号：US20230299856A1

    公开(公告)日：2023-09-21

    申请号：US17694866

    申请日：2022-03-15

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： David Ritter Thomas ,  Laurel Abeyta ,  Jason Douglas Jung ,  Kit MacCarthy Morton ,  Daniel Alan Berkram

    IPC: H04B10/69

    CPC classification number: H04B10/697 ,  H04B10/691

    Abstract: Examples described herein relate to a method and a system for removing the common-mode current. The receiver includes a photodetector, a common-mode adjustment circuit, an analog front-end, an eye scan circuit, and a control unit. The photodetector generates an input photocurrent responsive to a received optical signal. The common-mode adjustment circuit generates an adjusted input current based on the input photocurrent. The analog front-end generates a differential voltage based on the adjusted input current. Based on the differential voltage, the eye scan circuit generates an eye scan information defining a first outer eye and a second outer eye in an eye diagram. The control unit tunes the common-mode adjustment circuit based on a relative height metric of a first height of the first outer eye and a second height of the second outer eye to remove a portion of the common-mode current from the input photocurrent.

    Hyperscale photonics connectivity solution
    3.
    发明授权
    Hyperscale photonics connectivity solution 有权

    公开(公告)号：US10530481B1

    公开(公告)日：2020-01-07

    申请号：US16057626

    申请日：2018-08-07

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： Terrel Morris ,  Daniel Alan Berkram

    IPC: H04B10/40 ,  G02B6/42 ,  H04Q11/00

    Abstract: The present disclosure provides an effective solution to employ hyperscale photonics connectivity using existing server connections. The solution described in the present disclosure eliminates top-of-rack switches and facilitates a manner for servers to connect directly to middle-of-row switches. An apparatus consistent with the present disclosure includes a primary transceiver device. The primary server-end transceiver device comprising a photonics transceiver and a first electrical transmitter. The apparatus further includes a first secondary server-end transceiver device, the first secondary server-end transceiver device comprising a second electrical transmitter. In addition, a first electrical cable electrically couples the primary server-end transceiver to the first secondary server-end transceiver device. The present disclosure enables the use of an input fiber connection and a photonics transceiver to effect two sets of electrical connections on different servers.

    Common-mode current adjustment in a receiver
    5.
    发明授权
    Common-mode current adjustment in a receiver 有权

    公开(公告)号：US12003279B2

    公开(公告)日：2024-06-04

    申请号：US17694866

    申请日：2022-03-15

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： David Ritter Thomas ,  Laurel Abeyta ,  Jason Douglas Jung ,  Kit Maccarthy Morton ,  Daniel Alan Berkram

    IPC: H04B10/69

    CPC classification number: H04B10/697 ,  H04B10/691

    Abstract: Examples described herein relate to a method and a system for removing the common-mode current. The receiver includes a photodetector, a common-mode adjustment circuit, an analog front-end, an eye scan circuit, and a control unit. The photodetector generates an input photocurrent responsive to a received optical signal. The common-mode adjustment circuit generates an adjusted input current based on the input photocurrent. The analog front-end generates a differential voltage based on the adjusted input current. Based on the differential voltage, the eye scan circuit generates an eye scan information defining a first outer eye and a second outer eye in an eye diagram. The control unit tunes the common-mode adjustment circuit based on a relative height metric of a first height of the first outer eye and a second height of the second outer eye to remove a portion of the common-mode current from the input photocurrent.

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