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公开(公告)号：US12237982B2
公开(公告)日：2025-02-25
申请号：US17824944
申请日：2022-05-26
Applicant: Marvell Asia Pte Ltd
Inventor： Seid Alireza Razavi Majomard , David Shen
IPC: H04L41/149 , H04L67/12
Abstract: Methods and systems provide for early detection of failures in cables and/or physical layer devices (PHY) linked thereto, of a communications network in a vehicle. The methods and systems employ a computer trained model that analyzes changes in detected values obtained from a given vehicle within an operational time period, against a range of operational values, collected from different vehicles and/or the given vehicle, for the respective PHY parameter, to determine that the cable and/or the PHY linked thereto in the given vehicle may fail within a predetermined time period.
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公开(公告)号：US20220131724A1
公开(公告)日：2022-04-28
申请号：US17451869
申请日：2021-10-22
Applicant: Marvell Asia Pte Ltd
Inventor： Seid Alireza Razavi Majomard , David Shen , Ragnar Hlynur Jonsson
IPC: H04L25/03
Abstract: A physical layer transceiver, for connecting a host device to a wireline channel medium that is divided into a total number of link segments, includes a host interface for coupling to a host device, a line interface for coupling to the wireline channel medium, and feed-forward equalization (FFE) circuitry operatively coupled to the line interface to add back, into a signal, components that were scattered in time. Respective individual filter segments are selectably configurable, by adjustment of respective delay lines, to correspond to respective individual link segments. The FFE circuitry also includes control circuitry configured to detect a signal energy peak in at least one particular link segment and, upon detection of the signal energy peak in the particular link segment, configure a respective one of the respective individual filter segments, by adjustment of a respective delay line, to correspond to the respective particular link segment.
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公开(公告)号：US20210314023A1
公开(公告)日：2021-10-07
申请号：US17235813
申请日：2021-04-20
Applicant: Marvell Asia Pte, Ltd.
Inventor： David Shen , Seid Alireza Razavi Majomard , KongHoei Susanto Lim
Abstract: A method of operating an Ethernet transceiver includes initializing the Ethernet transceiver during a training mode of operation by monitoring background link operating characteristics with on-chip circuitry during a non-data-transfer interval to establish a baseline alien crosstalk value. Training data is then transmitted at a first transmit power level and first data rate to a link partner during a data transfer interval. The link is monitored with the on-chip circuitry during the data transfer interval to detect feedback indicating alien crosstalk effects to neighboring Ethernet links due to the transmitting. The first data rate and/or first transmit power level is then adjusted to an adjusted second data rate and/or second transmit power level based on the feedback. The Ethernet transceiver is then operated in a normal data transfer mode utilizing the adjusted second data rate and/or transmit power level.
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公开(公告)号：US20210218606A1
公开(公告)日：2021-07-15
申请号：US17248082
申请日：2021-01-08
Applicant: Marvell Asia Pte, Ltd.
Inventor： David Shen , Oliver Weiss
Abstract: A physical layer transceiver for a wireline channel medium includes a host interface to a host device, a line interface to the medium, encoding/decoding circuitry for interfacing between the host device and the medium, and adaptive filter circuitry coupled to the encoding/decoding circuitry. The adaptive filter circuitry includes a plurality of filter taps, each corresponding to a segment of the medium, and capable of being powered ON and OFF separately from each other filter tap. Adaptive control circuitry can power ON a first subset, fewer than all the filter taps, corresponding to segments distributed along the medium, monitor powered-ON filter taps for occurrence of interference events, and upon detection of an interference event at a particular segment to which a particular powered-ON filter tap corresponds, power ON one or more additional filter taps corresponding to one or more segments in a vicinity of the particular segment.
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公开(公告)号：US20240388471A1
公开(公告)日：2024-11-21
申请号：US18644221
申请日：2024-04-24
Applicant: Marvell Asia Pte Ltd
Inventor： Seid Alireza Razavi Majomard , Ragnar Hlynur Jonsson , David Shen
Abstract: An in-vehicle Ethernet network for data communication within a vehicle, includes a plurality of cables, a first Ethernet transceiver and a second Ethernet transceiver. The plurality of cables includes at least a first cable having a first length, and a second cable having a second length shorter than the first length. The first Ethernet transceiver is coupled to the longer cable and is configured to communicate first symbols over the longer cable at a first baud rate that is commensurate with the first cable length. The second Ethernet transceiver is coupled to the shorter cable and is configured to communicate second symbols over the shorter cable at a second baud rate that is commensurate with the second cable length and lower than the first baud rate.
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Patent Agency Ranking
公开(公告)号：US12021670B2
公开(公告)日：2024-06-25
申请号：US18333248
申请日：2023-06-12
Applicant: Marvell Asia Pte Ltd
Inventor： Seid Alireza Razavi Majomard , David Shen , Ragnar Hlynur Jonsson
IPC: H04L25/03
CPC classification number: H04L25/03885
Abstract: A physical layer transceiver, for connecting a host device to a wireline channel medium that is divided into a total number of link segments, includes a host interface for coupling to a host device, a line interface for coupling to the wireline channel medium, and feed-forward equalization (FFE) circuitry operatively coupled to the line interface to add back, into a signal, components that were scattered in time. Respective individual filter segments are selectably configurable, by adjustment of respective delay lines, to correspond to respective individual link segments. The FFE circuitry also includes control circuitry configured to detect a signal energy peak in at least one particular link segment and, upon detection of the signal energy peak in the particular link segment, configure a respective one of the respective individual filter segments, by adjustment of a respective delay line, to correspond to the respective particular link segment.
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公开(公告)号：US20230336384A1
公开(公告)日：2023-10-19
申请号：US18333248
申请日：2023-06-12
Applicant: Marvell Asia Pte Ltd
Inventor： Seid Alireza Razavi Majomard , David Shen , Ragnar Hlynur Jonsson
IPC: H04L25/03
CPC classification number: H04L25/03885
Abstract: A physical layer transceiver, for connecting a host device to a wireline channel medium that is divided into a total number of link segments, includes a host interface for coupling to a host device, a line interface for coupling to the wireline channel medium, and feed-forward equalization (FFE) circuitry operatively coupled to the line interface to add back, into a signal, components that were scattered in time. Respective individual filter segments are selectably configurable, by adjustment of respective delay lines, to correspond to respective individual link segments. The FFE circuitry also includes control circuitry configured to detect a signal energy peak in at least one particular link segment and, upon detection of the signal energy peak in the particular link segment, configure a respective one of the respective individual filter segments, by adjustment of a respective delay line, to correspond to the respective particular link segment.
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公开(公告)号：US20230224139A1
公开(公告)日：2023-07-13
申请号：US18150213
申请日：2023-01-05
Applicant: Marvell Asia Pte Ltd
Inventor： Madhusudhan Harigovindan Thekkeettil , David Shen
CPC classification number: H04L7/10 , H04J3/0661
Abstract: An apparatus for controlling a sensor over a network includes a transceiver and a processor. The transceiver is configured to communicate over a network. The processor is configured to receive or generate control data for controlling a sensor connected to the network, to generate a packet including (i) the control data and (ii) a trigger timestamp indicative of a future time at which the control data is to be provided to the sensor, and to transmit the packet using the transceiver over the network.
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公开(公告)号：US11677595B2
公开(公告)日：2023-06-13
申请号：US17451869
申请日：2021-10-22
Applicant: Marvell Asia Pte Ltd
Inventor： Seid Alireza Razavi Majomard , David Shen , Ragnar Hlynur Jonsson
IPC: H04L25/03
CPC classification number: H04L25/03885
Abstract: A physical layer transceiver, for connecting a host device to a wireline channel medium that is divided into a total number of link segments, includes a host interface for coupling to a host device, a line interface for coupling to the wireline channel medium, and feed-forward equalization (FFE) circuitry operatively coupled to the line interface to add back, into a signal, components that were scattered in time. Respective individual filter segments are selectably configurable, by adjustment of respective delay lines, to correspond to respective individual link segments. The FFE circuitry also includes control circuitry configured to detect a signal energy peak in at least one particular link segment and, upon detection of the signal energy peak in the particular link segment, configure a respective one of the respective individual filter segments, by adjustment of a respective delay line, to correspond to the respective particular link segment.
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公开(公告)号：US12199692B2
公开(公告)日：2025-01-14
申请号：US17752562
申请日：2022-05-24
Applicant: Marvell Asia Pte Ltd
Inventor： Seid Alireza Razavi Majomard , Ron Cates , Ragnar Hlynur Jonsson , David Shen
Abstract: A network controller receives link metrics for network links on cables between network devices in a communication network. The link metrics include metrics indicative of crosstalk experienced by network links among the network links on cables. The network controller determines, based at least in part on the link metrics, respective link settings for respective network links among the network links. The link settings are determined to mitigate crosstalk experienced by the respective network links as a result of transmission of signals in at least some of the network links at baud rates that correspond to bandwidths that exceed maximum bandwidth ratings of respective cables of the corresponding ones of the network links. The network controller causes configuration of the respective network links based on the link settings to optimize performance across the plurality of network links in the communication network.
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