Patents by Inventor Martin Akerberg

Martin Akerberg 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).

  • Patent number: 7205842
    Abstract: The present invention comprises a method and apparatus for continuously, controlling a gain of an amplifier circuit while switching between open-loop and closed-loop power control. A control circuit controls the gain of the amplifier circuit during open-loop and closed-loop power control modes based on selected references. Before the switch from open-loop to closed-loop power control, the control circuit determines a closed-loop reference based on a power measured at the amplifier circuit output before the switch. After the switch, the control circuit controls the gain of the amplifier circuit based on the determined closed-loop reference. Before switching from closed-loop to open-loop power control, the control circuit generates a difference between a current open-loop reference and a previous open-loop reference.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: April 17, 2007
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Björn Gustavsson, Martin Akerberg
  • Publication number: 20060152285
    Abstract: The present invention comprises a method and apparatus for continuously, controlling a gain of an amplifier circuit while switching between open-loop and closed-loop power control. A control circuit controls the gain of the amplifier circuit during open-loop and closed-loop power control modes based on selected references. Before the switch from open-loop to closed-loop power control, the control circuit determines a closed-loop reference based on a power measured at the amplifier circuit output before the switch. After the switch, the control circuit controls the gain of the amplifier circuit based on the determined closed-loop reference. Before switching from closed-loop to open-loop power control, the control circuit generates a difference between a current open-loop reference and a previous open-loop reference.
    Type: Application
    Filed: July 8, 2005
    Publication date: July 13, 2006
    Inventors: Bjorn Gustavsson, Martin Akerberg
  • Publication number: 20040092286
    Abstract: Method and apparatus for monitoring one or more telecommunications systems supported by a wireless device with respect to which the wireless device is in an idle mode while the wireless device is in a connected mode with respect to another supported system. The apparatus includes an air interface, at least two access means for providing the wireless device with access to at least two supported telecommunications systems, and a circuit having a connection to the air interface and a plurality of connections to the at least two access means.
    Type: Application
    Filed: September 3, 2003
    Publication date: May 13, 2004
    Inventors: Hans Stattin, Martin Hellmark, Martin Akerberg