Patents by Inventor Joakim Sernbrant

Joakim Sernbrant 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: 7249256
    Abstract: The present invention relates to a method, a system and a computer-readable medium storing computer-executable components in connection with transfer of information data to a recipient. The invention is based on the idea that generation of random number data and the calculation of digital signatures are performed before information data is accessible to a digital pen. Since asymmetric encryption of data is a demanding operation for said digital pen to perform in terms of processing power, a lot of time can be saved if the generation of random number data and asymmetric encryption of said random number data is performed in advance, when the pen is in an idle, non-communicating mode, for example during battery loading of the pen or when the pen is lifted from the position-coded paper. This alleviates delay times when the pen is in its communicating mode.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: July 24, 2007
    Assignee: Anoto AB
    Inventors: Mads Dore Hansen, Joakim Sernbrant, Lars Romedahl, Mikael Thuvesholmen
  • Publication number: 20030021419
    Abstract: The present invention relates to a method, a system and a computer-readable medium storing computer-executable components in connection with transfer of information data to a recipient. The invention is based on the idea that generation of random number data and the calculation of digital signatures are performed before information data is accessible to a digital pen. Since asymmetric encryption of data is a demanding operation for said digital pen to perform in terms of processing power, a lot of time can be saved if the generation of random number data and asymmetric encryption of said random number data is performed in advance, when the pen is in an idle, non-communicating mode, for example during battery loading of the pen or when the pen is lifted from the position-coded paper. This alleviates delay times when the pen is in its communicating mode.
    Type: Application
    Filed: July 11, 2002
    Publication date: January 30, 2003
    Inventors: Mads Dore Hansen, Joakim Sernbrant, Lars Romedahl, Mikael Thuvesholmen