Patents by Inventor Simon Au

Simon Au 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 brownout protection of a FET based battery switch
    Patent number: 7336005
    Abstract: A switching circuit operative to switch between a first and second power source to an output is disclosed. The circuit comprises a MOSFET switch electrically connected to the first and second power sources and operative to provide power from either one of the power sources to the output. The circuit includes a RC network electrically connected to a gate of the MOSFET switch. The RC network is operative to delay switching between the first and second power sources such that the second power source has the opportunity to fully ramp-up in order to provide continuous power to the output. Accordingly, the second power source can fully provide power to the output when the power is switched from the first power source to the second power source.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: February 26, 2008
    Assignee: Sierra Wireless, Inc.
    Inventors: Samir Hadzimusic, Simon Au
  • System and method for brownout protection of a FET based battery switch
    Publication number: 20070040451
    Abstract: A switching circuit operative to switch between a first and second power source to an output is disclosed. The circuit comprises a MOSFET switch electrically connected to the first and second power sources and operative to provide power from either one of the power sources to the output. The circuit includes a RC network electrically connected to a gate of the MOSFET switch. The RC network is operative to delay switching between the first and second power sources such that the second power source has the opportunity to fully ramp-up in order to provide continuous power to the output. Accordingly, the second power source can fully provide power to the output when the power is switched from the first power source to the second power source.
    Type: Application
    Filed: October 24, 2006
    Publication date: February 22, 2007
    Applicant: Sierra Wireless, Inc.
    Inventors: Samir Hadzimusic, Simon Au
  • System and method for brownout protection of a FET based battery switch
    Patent number: 7145267
    Abstract: A switching circuit operative to switch between a first and second power source to an output is disclosed. The circuit comprises a MOSFET switch electrically connected to the first and second power sources and operative to provide power from either one of the power sources to the output. The circuit includes a RC network electrically connected to a gate of the MOSFET switch. The RC network is operative to delay switching between the first and second power sources such that the second power source has the opportunity to fully ramp-up in order to provide continuous power to the output. Accordingly, the second power source can fully provide power to the output when the power is switched from the first power source to the second power source.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: December 5, 2006
    Assignee: Sierra Wireless, Inc.
    Inventors: Samir Hadzimusic, Simon Au
  • System and method for brownout protection of a FET based battery switch
    Publication number: 20040080215
    Abstract: A switching circuit operative to switch between a first and second power source to an output is disclosed. The circuit comprises a MOSFET switch electrically connected to the first and second power sources and operative to provide power from either one of the power sources to the output. The circuit includes a RC network electrically connected to a gate of the MOSFET switch. The RC network is operative to delay switching between the first and second power sources such that the second power source has the opportunity to fully ramp-up in order to provide continuous power to the output. Accordingly, the second power source can fully provide power to the output when the power is switched from the first power source to the second power source.
    Type: Application
    Filed: October 23, 2002
    Publication date: April 29, 2004
    Applicant: Sierra Wireless, Inc., a Canadian Corporation
    Inventors: Samir Hadzimusic, Simon Au
  • Antenna for a PC card
    Patent number: 6653979
    Abstract: An antenna for a PC card is provided. The antenna of the present invention includes a shaft, a hinge and a nub. The shaft has a first end and a second end where the hinge is disposed intermediate the first end and the second end of the antenna at an angle relative to the PC card. The nub, which is disposed at the second end of the shaft, includes a gripping surface for gripping by a user during deployment of the antenna. The gripping surface is disposed at the angle relative to the hinge such that as a user rotates the antenna during deployment, the antenna properly deploys.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: November 25, 2003
    Assignee: Sierra Wireless, Inc.
    Inventors: Simon Au, Christopher Michael Chan-Henry, Norman Toms
  • ANTENNA FOR A PC CARD
    Publication number: 20030063035
    Abstract: An antenna for a PC card is provided. The antenna of the present invention includes a shaft, a hinge and a knub. The shaft has a first end and a second end where the hinge is disposed intermediate the first end and the second end of the antenna at an angle relative to the PC card. The knub, which is disposed at the second end of the shaft, includes a gripping surface for gripping by a user during deployment of the antenna. The gripping surface is disposed at the angle relative to the hinge such that as a user rotates the antenna during deployment, the antenna properly deploys.
    Type: Application
    Filed: October 2, 2001
    Publication date: April 3, 2003
    Inventors: Simon Au, Christopher Michael Chan-Henry, Norman Toms