Patents by Inventor Ian R Fairman

Ian R Fairman 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).

  • Data communications
    Patent number: 7209560
    Abstract: In a data communications system a remote data source outputs data as a series of application data units (ADUs). Each ADU is individually encrypted with a different key. The keys are transmitted (for example using Internet multicasting) via a communications network to one or more customer terminals. At the terminals a sequence of keys is generated for use in decrypting the ADUs. A record is kept of the keys generated, and this record may subsequently be used to generate a receipt for the data received by the customer. The keys may be generated, and the record stored within a secure module such as a smartcard.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: April 24, 2007
    Assignee: British Telecommunications public limited company
    Inventors: Ian R Fairman, Robert J Briscoe
  • Data communications
    Patent number: 6996722
    Abstract: In a data communications system a remote data source outputs data as a series of application data units (ADUs). Each ADU is individually encrypted with a different key. The keys are transmitted (for example using Internet multicasting) via a communications network to one or more customer terminals. At the terminals a sequence of keys is generated for use in decrypting the ADUs. A record is kept of the keys generated, and this record may subsequently be used to generate a receipt for the data received by the customer. The keys may be generated, and the record stored within a secure module such as a smartcard.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: February 7, 2006
    Assignee: British Telecommunications public limited company
    Inventors: Ian R Fairman, Robert J Briscoe