Patents by Inventor Masaaki Akahanc

Masaaki Akahanc 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).

  • Automatic generation of private authentication key for wireless communication systems
    Patent number: 5513245
    Abstract: Apparatus and method for automatically generating an authentication key (A-Key) in a mobile station wherein the mobile station periodically receives random numbers from a base station, and automatically generates the authentication key from a received random number and from mobile station identification data stored in the mobile station. The mobile station identification data may include the electronic serial number of the mobile station, a user selected value, and a cellular system selected value. In addition, mixing registers may be utilized by an encoding algorithm, such as the CAVE algorithm, for encoding the random numbers and the identification data to automatically generate the mobile station authentication key.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: April 30, 1996
    Assignees: Sony Corporation, Sony Electronics, Inc.
    Inventors: Semyon Mizikovsky, Geoffrey Anderson, Peter Doums, Masaaki Akahanc, Hiroshi Yasuda