Patents Represented by Attorney John C. Stewart
  • Patent number: 7185195
    Abstract: In accordance with one embodiment of the present invention, a digital certificate is used to link an arbitrary provisioned right with an associated arbitrary digital action to be performed by a client device on or with respect to a protected digital content object. In one embodiment, the certificate is associated with one or more secure components, which are utilized by the client device in association with performance of the digital action.
    Type: Grant
    Filed: December 14, 2003
    Date of Patent: February 27, 2007
    Assignee: Realnetworks, Inc.
    Inventors: Joshua D. Hug, Xiaodong Fu
  • Patent number: 5780995
    Abstract: A circuit for regulating the charging voltage to a battery and connected to the field inductor (IND) of an alternator (ALT) which supplies that voltage.It is connected by a control cable to the battery and comprises an electric path, extending between a terminal for connection to the alternator and ground, which is only activated when the battery voltage drops below a predetermined threshold value.This electric path comprises a switch (TSW) driven from a control circuit (COMP1,T4) which sense the battery voltage, and when activated, the voltage drop across the path is substantially equal to that of the regulated voltage. The control circuit also senses breakage in the battery sensing cable, and ceases driving the alternator when this occurs.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: July 14, 1998
    Assignee: SGS-Thomson Microelectronics S.r.l.
    Inventors: Giampietro Maggioni, Mirco Contucci