Patents by Inventor Don T. Lam

Don T. Lam 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).

  • Topology for PCI bus riser card system
    Patent number: 6504725
    Abstract: The present invention provides a compact riser card system which provides two or more PCI connectors to couple one or more peripheral boards to a PCI bus on a computer board while satisfying the height requirements for 1U systems. In one embodiment, this invention provides two 64-bit connectors on two riser cards coupled to a single connector on a 66 MHz PCI bus.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: January 7, 2003
    Assignee: Intel Corporation
    Inventor: Don T. Lam
  • Audio activity detection circuit to increase battery life in portable computers
    Patent number: 5822598
    Abstract: A power management system for a computer system having an audio circuit which generates an audio output signal. An activity detection circuit senses audio signal activity on the analog audio signal. The power management system maintains power to at least the audio circuit when activity is detected on the analog audio circuit by the activity detection circuit. The power management system causes the audio circuit to enter a power conservation mode when no activity is detected by the audio detection circuit on the audio analog signal for a predetermined amount of time.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: October 13, 1998
    Assignee: AST Research, Inc.
    Inventor: Don T. Lam