Patents by Inventor Meilissa R. Lum

Meilissa R. Lum 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).

  • Techniques for controlling delivery of power to a remotely powerable device based on temperature
    Patent number: 7593747
    Abstract: An improved method is performed within power-sourcing equipment. The method controls delivery of power to a remotely powerable device through a communications pathway that connects the power-sourcing equipment to the remotely powerable device. The method involves obtaining an initial resistance value representing an initial resistance of the communications pathway, and obtaining an operating resistance value representing an operating resistance of the communications pathway after obtaining the initial resistance value. The method further involves generating a temperature change result based on the initial resistance value and the operating resistance value, and selectively one of enabling, scaling back and disabling delivery of power to the remotely powerable device through the communications pathway based on the temperature change result.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: September 22, 2009
    Assignee: Cisco Technology, Inc.
    Inventors: Roger Karam, Meilissa R. Lum
  • Method and apparatus distributing power to a load in a powered device
    Patent number: 7471014
    Abstract: A powered device, such as an IP telephone, includes power converter electronics that allows the powered device to couple to multiple power sources and receive a relatively large amount of power (e.g., 15 W or greater) from any single power source or from any combination of the power sources. For example, the powered device can connect to a first power source and a second power source by a cable having four twisted pairs of conductors where a first two-pair set of conductors couples the powered device to the first power source and a second two-pair set of conductors couples the powered device to the second powered device. In use, the converter circuitry can provide power to the load from either the first power source via the first two-pair set of conductors, the second power source via the second two-pair set of conductors, or from both power sources via both the first and second two-pair sets of conductors.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: December 30, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Meilissa R. Lum, Kan-Chiu Seto, Roger Karam
  • Method and apparatus for distributing power to a load in a powered device
    Publication number: 20080054720
    Abstract: A powered device, such as an IP telephone, includes power converter electronics that allows the powered device to couple to multiple power sources and receive a relatively large amount of power (e.g., 15 W or greater) from any single power source or from any combination of the power sources. For example, the powered device can connect to a first power source and a second power source by a cable having four twisted pairs of conductors where a first two-pair set of conductors couples the powered device to the first power source and a second two-pair set of conductors couples the powered device to the second powered device. In use, the converter circuitry can provide power to the load from either the first power source via the first two-pair set of conductors, the second power source via the second two-pair set of conductors, or from both power sources via both the first and second two-pair sets of conductors.
    Type: Application
    Filed: September 1, 2006
    Publication date: March 6, 2008
    Applicant: Cisco Technology, Inc.
    Inventors: Meilissa R. Lum, Kan-Chiu Seto, Roger Karam