Patents by Inventor Lee Song Cher

Lee Song Cher 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).

  • Selective power distribution during wireless charging
    Patent number: 9774209
    Abstract: Power distribution circuitry to improve wireless power distribution and facilitate wireless power transfer (WPT) operations in a wireless communication device under a variety of operating conditions. In various exemplary embodiments of the disclosure, the power distribution circuitry operates to provide a wireless power (WP) supply voltage to wireless communication circuitry of the device in order enable a WPT connection procedure under certain low power conditions. Such conditions might include a power off mode, a sleep mode, and dead/low battery operating conditions wherein the available battery supply voltage is less than a threshold voltage required to enable device components. The power distribution circuitry may switch the supply voltage of the wireless communication circuitry to another available supply voltage source after the WPT connection procedure is completed and wireless power is being received by the wireless communication device.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: September 26, 2017
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE.
    Inventors: Ming Yu Lin, Lee Song Cher, Khim Leng Low, John Stuart Walley, Domitille Odile Emmeline Esnard-Domerego, Yasantha Nirmal Rajakarunanayake, Angel Arturo Polo
  • Selective Power Distribution During Wireless Charging
    Publication number: 20150097520
    Abstract: Power distribution circuitry to improve wireless power distribution and facilitate wireless power transfer (WPT) operations in a wireless communication device under a variety of operating conditions. In various exemplary embodiments of the disclosure, the power distribution circuitry operates to provide a wireless power (WP) supply voltage to wireless communication circuitry of the device in order enable a WPT connection procedure under certain low power conditions. Such conditions might include a power off mode, a sleep mode, and dead/low battery operating conditions wherein the available battery supply voltage is less than a threshold voltage required to enable device components. The power distribution circuitry may switch the supply voltage of the wireless communication circuitry to another available supply voltage source after the WPT connection procedure is completed and wireless power is being received by the wireless communication device.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 9, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Ming Yu Lin, Lee Song Cher, Khim Leng Low, John Stuart Walley, Domitille Odile Emmeline Esnard-Domerego, Yasantha Nirmal Rajakarunanayake, Angel Arturo Polo
  • RF transponder
    Patent number: 6693599
    Abstract: An RF transponder having an antenna comprising at least two ports operable to receive signals such that, in use, the signals in combination establish at least two current nulls on the antenna, each of the ports being located substantially at a current null.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: February 17, 2004
    Assignee: National University of Singapore
    Inventors: Michael Yan Wah Chia, Chip Hong Ang, Daryl Lee Song Cher, We Peng Jason Ng