Patents by Inventor Keng Hua CHUANG

Keng Hua CHUANG 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: 9025496
    Abstract: A network switching device includes at least two stacking ports, each stacking port being connectable via a stacking cable to a stack including at least one external network switching device. The device further includes an internal communication medium coupled to the stacking ports and capable of transmitting a frequency division multiplexed signal between the stacking ports. The device further includes a network switch and an interface to enable communication between the network switch and the internal communication medium. The interface includes a parallel coupling to the internal communication medium such that a signal with one carrier frequency being communicated between the network switch and the internal communication medium does not interfere with transmission between the two stacking ports of a signal with a different carrier frequency.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: May 5, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keng Hua Chuang, Kum Cheong Adam Chan, Kian Teck Poh
  • Patent number: 9008112
    Abstract: A switch module includes multiple ports, each port electrically communicating with a port light emitting diode (LED), where each port LED is configured to emit light to indicate power delivery out of the port, and each port LED is configured to emit one of a plurality of light colors to indicate a power level delivered out of the port.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: April 14, 2015
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chee How Lee, Chee Cheng Jeffrey Liang, Keng Hua Chuang
  • Publication number: 20140133490
    Abstract: A network switching device includes at least two stacking ports, each stacking port being connectable via a stacking cable to a stack including at least one external network switching device. The device further includes an internal communication medium coupled to the stacking ports and capable of transmitting a frequency division multiplexed signal between the stacking ports. The device further includes a network switch and an interface to enable communication between the network switch and the internal communication medium. The interface includes a parallel coupling to the internal communication medium such that a signal with one carrier frequency being communicated between the network switch and the internal communication medium does not interfere with transmission between the two stacking ports of a signal with a different carrier frequency.
    Type: Application
    Filed: January 21, 2014
    Publication date: May 15, 2014
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Keng Hua Chuang, Kum Cheong Adam Chan, Kian Teck Poh
  • Patent number: 8665704
    Abstract: A network switching device includes at least two stacking ports, each stacking port being connectable via a stacking cable to a stack including at least one external network switching device. The device further includes an internal communication medium coupled to the stacking ports and capable of transmitting a frequency division multiplexed signal between the stacking ports. The device further includes a network switch and an interface to enable communication between the network switch and the internal communication medium. The interface includes a parallel coupling to the internal communication medium such that a signal with one carrier frequency being communicated between the network switch and the internal communication medium does not interfere with transmission between the two stacking ports of a signal with a different carrier frequency.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: March 4, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keng Hua Chuang, Kum Cheong Adam Chan, Kian Teck Poh
  • Patent number: 8532495
    Abstract: A method performed by a networked device for energy efficient operation of an optical transceiver of the networked device is described herein. It is determined whether a port control of the networked device is enabled to operate in an energy efficient state. Where the port control is enabled to operate in the energy efficient state and an absence of a valid receive energy from a link partner is determined, a laser transmitter of the optical transceiver is pulsed by asserting and de-asserting a control signal.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: September 10, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keng Hua Chuang, Daniel Joseph Dove, Mark Gravel, Yee Hong Tan, Lawrence Lee Chee How
  • Publication number: 20130136124
    Abstract: A network switching device includes at least two stacking ports, each stacking port being connectable via a stacking cable to a stack including at least one external network switching device. The device further includes an internal communication medium coupled to the stacking ports and capable of transmitting a frequency division multiplexed signal between the stacking ports. The device further includes a network switch and an interface to enable communication between the network switch and the internal communication medium. The interface includes a parallel coupling to the internal communication medium such that a signal with one carrier frequency being communicated between the network switch and the internal communication medium does not interfere with transmission between the two stacking ports of a signal with a different carrier frequency.
    Type: Application
    Filed: November 25, 2011
    Publication date: May 30, 2013
    Inventors: Keng Hua CHUANG, Kum Cheong Adam Chan, Kian Teck Poh
  • Publication number: 20120020675
    Abstract: A method performed by a networked device for energy efficient operation of an optical transceiver of the networked device is described herein. It is determined whether a port control of the networked device is enabled to operate in an energy efficient state. Where the port control is enabled to operate in the energy efficient state and an absence of a valid receive energy from a link partner is determined, a laser transmitter of the optical transceiver is pulsed by asserting and de-asserting a control signal.
    Type: Application
    Filed: July 23, 2010
    Publication date: January 26, 2012
    Inventors: Keng Hua CHUANG, Daniel Joseph Dove, Mark Gravel, Yee Hong Tan, Lawrence Lee Chee How