Patents by Inventor Robert James Walker

Robert James Walker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11575595
    Abstract: A digital crosspoint switch of a network switching system (NSS) replicates input data received via a first network interface to a first data processing port of a data processing card. The input data includes a digital market data feed comprising market-data packets. The crosspoint switch has internal crosspoint ports and external crosspoint ports. The data processing card includes a programmable logic device and a plurality of data processing ports connected to the internal crosspoint ports. The NSS includes a plurality of network interfaces connected to the external crosspoint ports. The data processing card processes the input data and generates processed data on the second data processing port at least in part by only including market-data packets that meet a first predetermined filtering criterion in the processed data. The crosspoint switch replicates the processed data from the second data processing port to the second network interface.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: February 7, 2023
    Assignee: Arista Networks, Inc.
    Inventors: Robert James Walker, Stefan Josef Gratzl, Sergey Sardaryan, Vahan Sardaryan
  • Patent number: 11561984
    Abstract: Presently disclosed are systems and methods for generating customized filtered-and-partitioned market-data feeds. In an embodiment, an output-feed profile is maintained in data storage at a market-data-processing device (MDPD). The output-feed profile specifies a subset of ticker symbols and a ticker-symbol-based feed-partitioning scheme. An input feed of order-book updates to ticker symbols is received at the MDPD from an upstream device. At the MDPD, a customized market-data output feed is generated according to the maintained output-feed profile at least in part by filtering the input feed down to the order-book updates to ticker symbols in the specified subset and partitioning the filtered feed according to the specified ticker-symbol-based feed-partitioning scheme. The customized market-data output feed is transmitted from the MDPD to a downstream device.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: January 24, 2023
    Assignee: GTO LLC
    Inventor: Robert James Walker
  • Publication number: 20210209116
    Abstract: Presently disclosed are systems and methods for generating customized filtered-and-partitioned market-data feeds. In an embodiment, an output-feed profile is maintained in data storage at a market-data-processing device (MDPD). The output-feed profile specifies a subset of ticker symbols and a ticker-symbol-based feed-partitioning scheme. An input feed of order-book updates to ticker symbols is received at the MDPD from an upstream device. At the MDPD, a customized market-data output feed is generated according to the maintained output-feed profile at least in part by filtering the input feed down to the order-book updates to ticker symbols in the specified subset and partitioning the filtered feed according to the specified ticker-symbol-based feed-partitioning scheme. The customized market-data output feed is transmitted from the MDPD to a downstream device.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 8, 2021
    Inventor: Robert James Walker
  • Patent number: 11055292
    Abstract: A market data processing device (MDPD) receives, from an upstream device, an input feed of order-book updates to ticker symbols. A first market-data feed is generated at the MDPD at least in part by: filtering the input feed down to order-book updates to a ticker-symbol subset; and inserting a sequence number into each such order-book update. Also generated at the MDPD is a second market-data feed that includes the order-book updates of the first market-data feed having the same sequence numbers inserted into the same order-book updates. The first market-data feed is transmitted to an arbitration device via a first communication path. The second market-data feed is transmitted to the arbitration device via a second communication path that is separate and distinct from the first communication path for use by the arbitration device in conducting sequence-number-based arbitration between the first and second market-data feeds.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: July 6, 2021
    Assignee: GTO LLC
    Inventor: Robert James Walker
  • Patent number: 11020620
    Abstract: A fire protection external vehicle cover including a plurality of panels of a fire retardant material or textile. Each panel is configured to cover an adjacent portion of the cabin of the vehicle; with one or more panels including a retention mechanism to secure the panels by gripping between closed doors and door frames of the cabin. A storage and deployment mechanism is configured to store and deploy the cover from one or more locations on the vehicle; wherein in operation, when deployed, the cover forms an enclosure over the cabin thereby protecting external surfaces of the cabin and thus its occupants and an internal lining of the vehicle from exposure to radiant heat, burning embers and flames if the vehicle is moving through or becomes trapped in a fire.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: June 1, 2021
    Inventors: Robert James Walker, Matthew Robert Walker
  • Publication number: 20210126857
    Abstract: A digital crosspoint switch of a network switching system (NSS) replicates input data received via a first network interface to a first data processing port of a data processing card. The input data includes a digital market data feed comprising market-data packets. The crosspoint switch has internal crosspoint ports and external crosspoint ports. The data processing card includes a programmable logic device and a plurality of data processing ports connected to the internal crosspoint ports. The NSS includes a plurality of network interfaces connected to the external crosspoint ports. The data processing card processes the input data and generates processed data on the second data processing port at least in part by only including market-data packets that meet a first predetermined filtering criterion in the processed data. The crosspoint switch replicates the processed data from the second data processing port to the second network interface.
    Type: Application
    Filed: January 7, 2021
    Publication date: April 29, 2021
    Inventors: Robert James Walker, Stefan Josef Gratzl, Sergey Sardaryan, Vahan Sardaryan
  • Patent number: 10936598
    Abstract: Presently disclosed are systems and methods for targeted exchange emulation. In an embodiment, an output-feed profile that specifies a ticker-symbol subset is maintained at a market data processing device (MDPD). An input feed of order-book updates to respective ticker symbols is received at the MDPD from an upstream device. An output feed is generated at the MDPD at least in part by filtering the received input feed down to order-book updates to the ticker-symbol subset and generating output-feed messages that convey the remaining order-book updates. The generated output feed (including the generated output-feed messages) is transmitted from the MDPD to a downstream device. Cached copies of at least the order-book updates from the input feed that correspond with output-feed messages in the output feed are stored at the MDPD. A gap-fill service for the output feed is provided from the MDPD to the downstream device using the cached copies.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: March 2, 2021
    Assignee: GTO LLC
    Inventor: Robert James Walker
  • Patent number: 10936597
    Abstract: Presently disclosed are systems and methods for generating customized filtered-and-partitioned market-data feeds. In an embodiment, an output-feed profile is maintained in data storage at a market-data-processing device (MDPD). The output-feed profile specifies a subset of ticker symbols and a ticker-symbol-based feed-partitioning scheme. An input feed of order-book updates to ticker symbols is received at the MDPD from an upstream device. At the MDPD, a customized market-data output feed is generated according to the maintained output-feed profile at least in part by filtering the input feed down to the order-book updates to ticker symbols in the specified subset and partitioning the filtered feed according to the specified ticker-symbol-based feed-partitioning scheme. The customized market-data output feed is transmitted from the MDPD to a downstream device.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: March 2, 2021
    Assignee: GTO LLC
    Inventor: Robert James Walker
  • Patent number: 10929405
    Abstract: A market-data processing device (MDPD) includes a line-rate processing module (LRPM) and a host. The LRPM is connected to an LRPM external-communication interface having a first port configured to receive a market-data input feed from an upstream device and a second port configured to transmit a market-data output feed to a downstream device. The LRPM includes a programmable logic circuit (PLC) configured to generate the output feed based on the input feed and transmit an archival copy of the input feed to the host via a communication bus. The host is connected to the LRPM via the communication bus and to a host external-communication interface. The host has a host processor configured to cache the archival copy of the input feed and use the cached archival copy of the input feed to provide, to the downstream device via the host external-communication interface, a gap-fill service for the output feed.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: February 23, 2021
    Assignee: GTO LLC
    Inventor: Robert James Walker
  • Patent number: 10917335
    Abstract: Method and systems for data switching, including receiving first input data at a network switching system comprising a crosspoint switch and a data processing card; transmitting the first input data from the crosspoint switch to the data processing card; making a first determination, by the data processing card, that the first input data meets a first pre-determined filtering criterion; and transmitting, based on the first determination, the first input data from a first crosspoint switch port of the crosspoint switch towards a first client.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: February 9, 2021
    Assignee: Arista Networks, Inc.
    Inventors: Robert James Walker, Stefan Josef Gratzl, Sergey Sardaryan, Vahan Sardaryan
  • Patent number: 10789054
    Abstract: Disclosed herein is a system for facilitating Change Impact Analysis (CIA) using modular program dependency graphs. Further, the system may include a communication device configured for receiving a source code for a software application and one or more changed lines corresponding to the source code from a user device, and transmitting one or more impacted lines from the source code associated with the software application to the user device. Further, the system may include a processing device configured for analyzing the source code to determine one or more modules, generating one or more modular Program Dependency Graphs (mPDGs) based on the analysis, updating at least one mPDG based on the one or more changed lines to obtain the at least one updated mPDG, searching the mPDG based on search expressions associated with the one or more changed lines, and calculating one or more impacted lines based on the searching.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: September 29, 2020
    Assignee: FIND IT EZ SOFTWARE CORP.
    Inventors: Kenneth Nicholas Joseph Gnazdowsky, Hao Men, Robert James Walker
  • Publication number: 20190361686
    Abstract: Disclosed herein is a system for facilitating Change Impact Analysis (CIA) using modular program dependency graphs. Further, the system may include a communication device configured for receiving a source code for a software application and one or more changed lines corresponding to the source code from a user device, and transmitting one or more impacted lines from the source code associated with the software application to the user device. Further, the system may include a processing device configured for analyzing the source code to determine one or more modules, generating one or more modular Program Dependency Graphs (mPDGs) based on the analysis, updating at least one mPDG based on the one or more changed lines to obtain the at least one updated mPDG, searching the mPDG based on search expressions associated with the one or more changed lines, and calculating one or more impacted lines based on the searching.
    Type: Application
    Filed: May 24, 2019
    Publication date: November 28, 2019
    Inventors: Kenneth Nicholas Joseph Gnazdowsky, Hao Men, Robert James Walker
  • Patent number: 10484268
    Abstract: A digital crosspoint switch of a network switching system (NSS) replicates input data received via a first network interface to a first data processing port of a data processing card. The input data includes a digital market data feed comprising market-data packets. The crosspoint switch has internal crosspoint ports and external crosspoint ports. The data processing card includes a programmable logic device and a plurality of data processing ports connected to the internal crosspoint ports. The NSS includes a plurality of network interfaces connected to the external crosspoint ports. The data processing card processes the input data and generates processed data on the second data processing port at least in part by only including market-data packets that meet a first predetermined filtering criterion in the processed data. The crosspoint switch replicates the processed data from the second data processing port to the second network interface.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: November 19, 2019
    Assignee: METAMAKO GENERAL PTY LTD ACN 163 573 331 IN ITS CAPACITY AS GENERAL PARTNER OF METAMAKO TECHNOLOGY LP ABN 11 872 058 101
    Inventors: Robert James Walker, Stefan Josef Gratzl, Sergey Sardaryan, Vahan Sardaryan
  • Publication number: 20190238452
    Abstract: Method and systems for data switching, including receiving first input data at a network switching system comprising a crosspoint switch and a data processing card; transmitting the first input data from the crosspoint switch to the data processing card; making a first determination, by the data processing card, that the first input data meets a first pre-determined filtering criterion; and transmitting, based on the first determination, the first input data from a first crosspoint switch port of the crosspoint switch towards a first client.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Inventors: Robert James Walker, Stefan Josef Gratzl, Sergey Sardaryan, Vahan Sardaryan
  • Patent number: 10353851
    Abstract: A physical-layer cross connect (PLCC) includes a system-bus interface; a switching circuit having multiple externally accessible data ports, an internal-only PLCC-controller port, and a data bus that is dynamically configurable among the externally accessible data ports and the internal-only PLCC-controller port; transceivers connected to the externally accessible data ports and to a signal bus; data jacks connected to the transceivers; and a PLCC controller interfaced with the system-bus interface, the data bus, the signal bus, and the internal-only PLCC-controller port and configured to: receive path-configuration commands from a communication-path-management controller and responsively configure connections on the data bus; receive mirrored copies of inbound data by selectively configuring connections on the data bus between the internal-only PLCC-controller port and the various externally accessible data ports; analyze the mirrored copies of inbound data to determine at least one informational characteris
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: July 16, 2019
    Assignee: xCelor LLC
    Inventors: Robert James Walker, Sergey Sardaryan
  • Publication number: 20190155758
    Abstract: A market-data processing device (MDPD) includes a line-rate processing module (LRPM) and a host. The LRPM is connected to an LRPM external-communication interface having a first port configured to receive a market-data input feed from an upstream device and a second port configured to transmit a market-data output feed to a downstream device. The LRPM includes a programmable logic circuit (PLC) configured to generate the output feed based on the input feed and transmit an archival copy of the input feed to the host via a communication bus. The host is connected to the LRPM via the communication bus and to a host external-communication interface. The host has a host processor configured to cache the archival copy of the input feed and use the cached archival copy of the input feed to provide, to the downstream device via the host external-communication interface, a gap-fill service for the output feed.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 23, 2019
    Inventor: Robert James Walker
  • Publication number: 20190155935
    Abstract: Presently disclosed are systems and methods for targeted exchange emulation. In an embodiment, an output-feed profile that specifies a ticker-symbol subset is maintained at a market data processing device (MDPD). An input feed of order-book updates to respective ticker symbols is received at the MDPD from an upstream device. An output feed is generated at the MDPD at least in part by filtering the received input feed down to order-book updates to the ticker-symbol subset and generating output-feed messages that convey the remaining order-book updates. The generated output feed (including the generated output-feed messages) is transmitted from the MDPD to a downstream device. Cached copies of at least the order-book updates from the input feed that correspond with output-feed messages in the output feed are stored at the MDPD. A gap-fill service for the output feed is provided from the MDPD to the downstream device using the cached copies.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 23, 2019
    Inventor: Robert James Walker
  • Publication number: 20190155933
    Abstract: A market data processing device (MDPD) receives, from an upstream device, an input feed of order-book updates to ticker symbols. A first market-data feed is generated at the MDPD at least in part by: filtering the input feed down to order-book updates to a ticker-symbol subset; and inserting a sequence number into each such order-book update. Also generated at the MDPD is a second market-data feed that includes the order-book updates of the first market-data feed having the same sequence numbers inserted into the same order-book updates. The first market-data feed is transmitted to an arbitration device via a first communication path. The second market-data feed is transmitted to the arbitration device via a second communication path that is separate and distinct from the first communication path for use by the arbitration device in conducting sequence-number-based arbitration between the first and second market-data feeds.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 23, 2019
    Inventor: Robert James Walker
  • Publication number: 20190155932
    Abstract: Presently disclosed are systems and methods for generating customized filtered-and-partitioned market-data feeds. In an embodiment, an output-feed profile is maintained in data storage at a market-data-processing device (MDPD). The output-feed profile specifies a subset of ticker symbols and a ticker-symbol-based feed-partitioning scheme. An input feed of order-book updates to ticker symbols is received at the MDPD from an upstream device. At the MDPD, a customized market-data output feed is generated according to the maintained output-feed profile at least in part by filtering the input feed down to the order-book updates to ticker symbols in the specified subset and partitioning the filtered feed according to the specified ticker-symbol-based feed-partitioning scheme. The customized market-data output feed is transmitted from the MDPD to a downstream device.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 23, 2019
    Inventor: Robert James Walker
  • Publication number: 20180345058
    Abstract: A fire protection external vehicle cover including a plurality of panels of a fire retardant material or textile. Each panel is configured to cover an adjacent portion of the cabin of the vehicle; with one or more panels including a retention mechanism to secure the panels by gripping between closed doors and door frames of the cabin. A storage and deployment mechanism is configured to store and deploy the cover from one or more locations on the vehicle; wherein in operation, when deployed, the cover forms an enclosure over the cabin thereby protecting external surfaces of the cabin and thus its occupants and an internal lining of the vehicle from exposure to radiant heat, burning embers and flames if the vehicle is moving through or becomes trapped in a fire.
    Type: Application
    Filed: May 29, 2018
    Publication date: December 6, 2018
    Inventors: Robert James WALKER, Matthew Robert WALKER