Patents by Inventor Michael David Fehnel

Michael David Fehnel 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: 6064889
    Abstract: A system and method for directing mobile stations from an analog control channel (ACCH) to a digital control channel (DCCH). According to the present invention, a dual-mode mobile station transmits over the ACCH a system access message (e.g., registration access message) to the system. The system recognizes the access to be from a dual-mode mobile station and selects a DCCH based on the subscriber profile and current location of the mobile station. The system then sends over the ACCH a mobile station control message (e.g., registration confirmation message) including data identifying the selected DCCH to the mobile station.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: May 16, 2000
    Assignee: Ericsson Inc.
    Inventor: Michael David Fehnel
  • Patent number: 5963869
    Abstract: A system and method for directing mobile stations from an analog control channel (ACCH) to a digital control channel (DCCH). According to the present invention, a dual-mode mobile station transmits over the ACCH a system access message (e.g., registration access message) to the system. The system recognizes the access to be from a dual-mode mobile station and selects a DCCH based on the subscriber profile and current location of the mobile station. The system then sends over the ACCH a mobile station control message (e.g., registration confirmation message) including data identifying the selected DCCH to the mobile station.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: October 5, 1999
    Assignee: Ericsson Inc.
    Inventor: Michael David Fehnel
  • Patent number: 5887251
    Abstract: The present invention allows a mobile station to receive a command entered by a user for selecting among a plurality of possible values for an authentication key (A-key) stored in its memory, including a default value, a random value and a custom (user-defined) value for the A-key. In response to the command, the mobile station can set the A-key in its memory to the default value or to an internally generated or previously stored random value, or to the custom value entered by the user. The command, whether for selecting the default, random or custom A-key value, may be entered during number assignment module (NAM) programming of the mobile station.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: March 23, 1999
    Assignee: Ericsson Inc.
    Inventor: Michael David Fehnel