Patents by Inventor James A. Weaver

James A. Weaver 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: 10798024
    Abstract: In some implementations, a switch card is provided. The switch card includes a set of switch chips configured to communicate data with a plurality of line cards. The plurality of line cards is coupled to a second switch card. The second switch card comprises a second set of switch chips. The switch card also includes a communication component coupled to the set of switch chips. The communication component is configured to determine whether the switch card should operate in a master mode or a slave mode. In response to determining that the switch card should operate in the master mode, the switch card is also configured to receive control plane data from a supervisor card. The switch card is further configured to communicate the control plane data to one or more switch chips of the set of switch chips and the second set of switch chips.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 6, 2020
    Assignee: Arista Networks, Inc.
    Inventors: Arul Ramalingam, James A. Weaver
  • Publication number: 20200195586
    Abstract: In some implementations, a switch card is provided. The switch card includes a set of switch chips configured to communicate data with a plurality of line cards. The plurality of line cards is coupled to a second switch card. The second switch card comprises a second set of switch chips. The switch card also includes a communication component coupled to the set of switch chips. The communication component is configured to determine whether the switch card should operate in a master mode or a slave mode. In response to determining that the switch card should operate in the master mode, the switch card is also configured to receive control plane data from a supervisor card. The switch card is further configured to communicate the control plane data to one or more switch chips of the set of switch chips and the second set of switch chips.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 18, 2020
    Inventors: James A. Weaver, Arul Ramalingam
  • Publication number: 20200195583
    Abstract: In some implementations, a switch card is provided. The switch card includes a set of switch chips configured to communicate data with a plurality of line cards. The plurality of line cards is coupled to a second switch card. The second switch card comprises a second set of switch chips. The switch card also includes a communication component coupled to the set of switch chips. The communication component is configured to determine whether the switch card should operate in a master mode or a slave mode. In response to determining that the switch card should operate in the master mode, the switch card is also configured to receive control plane data from a supervisor card. The switch card is further configured to communicate the control plane data to one or more switch chips of the set of switch chips and the second set of switch chips.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 18, 2020
    Inventors: Arul Ramalingam, James A. Weaver
  • Patent number: 10667385
    Abstract: Embodiments of the invention may relate to a circuit board (CB). The circuit board may include a first CB layer that includes a first anti-pad having a first area, a second CB layer that includes a second anti-pad having the first area and being located substantially beneath the first anti-pad, a first via within the first anti-pad and the second anti-pad, and a first CB trace in the second CB layer. The first CB trace may be coupled to the first via to form a first transition point within a first signal propagation path. The first area may be determined, at least in part, by a depth within the CB of the second CB layer.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: May 26, 2020
    Assignee: Arista Networks, Inc.
    Inventor: James A. Weaver
  • Publication number: 20200113041
    Abstract: Embodiments of the invention may relate to a circuit board (CB). The circuit board may include a first CB layer that includes a first anti-pad having a first area, a second CB layer that includes a second anti-pad having the first area and being located substantially beneath the first anti-pad, a first via within the first anti-pad and the second anti-pad, and a first CB trace in the second CB layer. The first CB trace may be coupled to the first via to form a first transition point within a first signal propagation path. The first area may be determined, at least in part, by a depth within the CB of the second CB layer.
    Type: Application
    Filed: October 3, 2018
    Publication date: April 9, 2020
    Inventor: James A. Weaver
  • Patent number: 8313712
    Abstract: The current invention provide a microfluidic valve having a housing that includes a microfluid control port disposed adjacent to a microfluid exhaust port, where a movable rigid material having a first diameter is disposed in the housing between the microfluid control port and the microfluid exhaust port. The housing further includes a microfluid pressure port having a first microfluid pressure. The microfluid pressure port is connected to the microfluid exhaust port by a microfluid valve orifice having a second diameter, where the first diameter is larger than the second diameter, and when a second microfluid pressure is applied to the control port the moveable rigid material closes the microfluid valve orifice, where the first microfluid pressure is greater than the second microfluid pressure.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: November 20, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jessica E. Melin, Donald C. Stark, James A. Weaver
  • Publication number: 20100233037
    Abstract: The current invention provide a microfluidic valve having a housing that includes a microfluid control port disposed adjacent to a microfluid exhaust port, where a movable rigid material having a first diameter is disposed in the housing between the microfluid control port and the microfluid exhaust port. The housing further includes a microfluid pressure port having a first microfluid pressure. The microfluid pressure port is connected to the microfluid exhaust port by a microfluid valve orifice having a second diameter, where the first diameter is larger than the second diameter, and when a second microfluid pressure is applied to the control port the moveable rigid material closes the microfluid valve orifice, where the first microfluid pressure is greater than the second microfluid pressure.
    Type: Application
    Filed: March 3, 2010
    Publication date: September 16, 2010
    Inventors: Jessica E. Melin, Donald C. Stark, James A. Weaver
  • Patent number: 4628473
    Abstract: The invention provides a system with no moving parts for autocorrelating optical radiation signals. An incident optical radiation signal is first divided into first and second optical beams which, in the preferred embodiment, are directed respectively through first and second electro-optic crystals to produce a relative time adjustment between the optical beams. The optical beams are then combined and a product value is determined. Using the technique of autocorrelation, the product of the optical beams is measured over a range of time adjustments between the optical beams to provide a measurement of the incident optical radiation signal. The system and method described provide a vibration-free technique for autocorrelation which can be incorporated into laser resonator structures.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: December 9, 1986
    Assignee: Cooper Lasersonics, Inc.
    Inventor: James A. Weaver
  • Patent number: 4290730
    Abstract: An attachment for a fork lift truck for opening and closing sliding doors such as railway freight car doors. The attachment includes a floor that can be engaged by the tines of the fork lift and two vertically spaced apart door engaging members mounted to the floor for transverse movement with respect thereto. The floor also mounts an upstanding cage assembly so that a person can work inside a protected area.
    Type: Grant
    Filed: March 13, 1980
    Date of Patent: September 22, 1981
    Assignee: General Foods Corporation
    Inventor: James A. Weaver