Patents by Inventor Che Kin Leung

Che Kin Leung 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).

  • Publication number: 20190089650
    Abstract: Disclosed embodiments include a network switch having a first number of switch elements and a second number of switch elements cross-connected to the first switch elements to passively route network traffic through the network switch in accordance with a predefined configuration.
    Type: Application
    Filed: September 15, 2017
    Publication date: March 21, 2019
    Inventors: Che Kin Leung, Xu Wang, Zhiping Yao, Hans-Jergen Schmidtke, Lingjun Wu
  • Publication number: 20190081911
    Abstract: Low-cost network switches and other computing systems are described herein. A low-cost network switch can operate at a lower ambient temperature (e.g., 55° C.) than conventional switches, thereby enabling the use of lower cost components (e.g., optical components that are not rated for operation at up to 70° C.). The network switch can utilize a power bar pass-through card that provides power from an enclosure bus bar to components of the network switch in lieu of a power supply unit. Additionally, ports of the network switch can operate in a 2×50G mode in which a network switch port capable of communicating at 100 Gbps interfaces with two external ports each capable of communicating at 50 Gbps. Communication in 2×50G mode can be supported by a four-channel Y-cable, in which the four channels are utilized by the network switch port and fan-out to two channels to each of the two external ports.
    Type: Application
    Filed: September 14, 2017
    Publication date: March 14, 2019
    Inventors: Che Kin Leung, Xu Wang, Hans-Juergen Schmidtke
  • Patent number: 10165709
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: December 25, 2018
    Assignee: Facebook, Inc.
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Patent number: 10028417
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: July 17, 2018
    Assignee: Facebook, Inc.
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Publication number: 20180199470
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Application
    Filed: March 6, 2018
    Publication date: July 12, 2018
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Patent number: 9949409
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: April 17, 2018
    Assignee: Facebook, Inc.
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Patent number: 9854697
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: December 26, 2017
    Assignee: Facebook, Inc.
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Publication number: 20170329371
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Application
    Filed: October 12, 2016
    Publication date: November 16, 2017
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Publication number: 20170332519
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Application
    Filed: October 12, 2016
    Publication date: November 16, 2017
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Publication number: 20170331766
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Application
    Filed: October 12, 2016
    Publication date: November 16, 2017
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Publication number: 20170332506
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Application
    Filed: October 12, 2016
    Publication date: November 16, 2017
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Publication number: 20170332518
    Abstract: Modular network switches and other computer systems are described herein. A modular network switch can include a latching device for installing and removing computer modules (e.g., line cards) from an associated cabinet or enclosure. The network switch can also include interconnected computer modules (e.g., line cards, fabric cards, control modules, etc.) that include circuit boards oriented parallel to the flow of cooling air through the cabinet in the absence of a backplane or midplane oriented perpendicular to the air flow. The absence of such backplanes and/or midplanes provides a more direct air flow path through the cabinet, thereby enabling a more efficient flow of cooling air and lower operating temperatures. Additionally, the network switch can include an orthogonal arrangement of data planes, control planes, and/or power planes that can be efficiently interconnected to increase operational speed and further facilitate the flow of cooling air through the computer cabinet.
    Type: Application
    Filed: October 12, 2016
    Publication date: November 16, 2017
    Inventors: Hans-Juergen Schmidtke, Zhiping Yao, Che Kin Leung, Xu Wang
  • Patent number: 8260997
    Abstract: In one embodiment, a method comprises initiating shutdown of network traffic of a line card while the line card is coupled to a connector chassis and exchanging network traffic, the initiating shutdown in response to actuation of a magnetic switch associated with the line card, the magnetic switch being actuated in response to movement of actuating structure that unlocks the line card for removal from the connector chassis; and completing the shutdown of network traffic in the line card prior to permitting complete removal of the line card from the connector chassis.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: September 4, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Frans Kusnadi, Jimmy Che-Kin Leung, Mandy Hin Lam
  • Patent number: 6283770
    Abstract: An apparatus for providing EMI shielding. A conductive clip has a first jaw and a second jaw with an elbow between. The first jaw has a major surface with a detent formed on the major surface and defining a discontinuity in the major surface. The second jaw forms a contact hump disposed along the second jaw between two contact segments.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: September 4, 2001
    Assignee: Cisco Technology, Incc.
    Inventors: Jimmy Che-Kin Leung, Scott A. Eastman, Douglas J. Hurst