Patents by Inventor Mark A. Stubbs

Mark A. Stubbs 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).

  • Identification of powered devices for energy saving
    Patent number: 8461725
    Abstract: A computer-implemented method for electronic content management includes physically exposing an electric appliance to a power providing device that is arranged to provide electrical power to various electric appliances, including the electric appliance; automatically obtaining an electronic identifier for the electric appliance using the power providing device; and transmitting the electronic identifier from the power providing device to a remote computing system.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: June 11, 2013
    Assignee: Google Inc.
    Inventors: Mark A. Stubbs, Manuel Roman
  • Error correcting using signal anomaly as a hint
    Patent number: 6295625
    Abstract: A “hint” signal is developed which points to suspected erroneous bits in received data by examining anomalies in the signal. More particularly, a delta phase pointer which quantifies one of the anomalies is used. The realigning of an IQ pointer provides an additional anomaly which is prioritized along with the delta phase pointer. The particular error correcting code used for the power line application provides seven check bits for a data byte and permits the correction of up to two errors. A third error is correctable through use of the hint signal and a parity bit.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: September 25, 2001
    Assignee: Echelon Corporation
    Inventors: Walter J. Downey, Mark A. Stubbs, Philip H. Sutterlin, Luna Chen
  • Method and apparatus for arbitration and access to a shared bus
    Patent number: 5983302
    Abstract: The present invention is directed to providing a computer system which arbitrates control of a shared bus among plural devices included in the computer system. In accordance with the present invention, at least one of the devices is afforded a higher priority than the remaining devices, yet none of the remaining devices are effectively denied system bus access or control for extended periods of time. The present invention can therefore increase operating efficiency even as the number of devices included in the computer system is increased to achieve enhanced processing power. In addition, the present invention can provide sophisticated multimedia features, including real time signal processing, without sacrificing overall operating efficiency.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: November 9, 1999
    Assignee: Apple Comptuer, Inc.
    Inventors: Kevin M. Christiansen, Mark A. Stubbs, Bruce Eckstein
  • Method and apparatus for arbitrating access to a shared bus
    Patent number: 5787264
    Abstract: The present invention is directed to providing a computer system which arbitrates control of a shared bus among plural devices included in the computer system. In accordance with the present invention, at least one of the devices is afforded a higher priority than the remaining devices, yet none of the remaining devices are effectively denied system bus access or control for extended periods of time. The present invention can therefore increase operating efficiency even as the number of devices included in the computer system is increased to achieve enhanced processing power. In addition, the present invention can provide sophisticated multimedia features, including real time signal processing, without sacrificing overall operating efficiency.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: July 28, 1998
    Assignee: Apple Computer, Inc.
    Inventors: Kevin M. Christiansen, Mark A. Stubbs, Bruce Eckstein