Patents by Inventor Ngee Ching Lim

Ngee Ching Lim 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).

  • Construction and use of preamps having discrete gain states
    Patent number: 7199666
    Abstract: In one embodiment, the linear gain region of a preamp is widened by performing the following actions within the preamp: converting a received input current to a first voltage; in accordance with one of a plurality of discrete gain states, amplifying the first voltage to produce a second voltage; in response to the received input current crossing one or more thresholds, switching the gain state used for amplifying the first voltage; and outputting an indication of the preamp's current gain state. Preamps for performing this and other methods are also disclosed.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: April 3, 2007
    Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.
    Inventors: Say Hyan Gan, Irene Quek, Ngee Ching Lim