Patents by Inventor David L. Oster

David L. Oster 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).

  • System and method for operating a sensed power device over data wiring
    Patent number: 7154381
    Abstract: According to the present invention, a power source delivers power to a networked device over network cabling (e.g., Ethernet cabling) in one of two modes: a low power mode and a high power mode. The power source begins delivering power at a low power level in the low power mode, and switches to a high power level in the high power mode after a communication exchange between the networked device and the power source. A power source delivery system includes circuitry on both the power source and the powered device for communicating information between the devices.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: December 26, 2006
    Assignee: Sonos, Inc.
    Inventors: Jonathan P. Lang, David L. Oster