Patents by Inventor Howard Crompton Herbert

Howard Crompton Herbert 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).

  • Dynamic configuration of a secure processing unit for operations in various environments
    Patent number: 5883956
    Abstract: A technique to dynamically configure a Secure Processing Unit (SPU) chip in a secure manner using a capability table, which defines the functions that an SPU can perform. The capability table employs a digital signature to ensure the authenticity of the source and contents of the table. It also contains information which identifies the SPU for which the table is intended and a time-stamp indicating the time by which the table must be loaded into an SPU.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: March 16, 1999
    Assignee: National Semiconductor Corporation
    Inventors: An Van Le, William B. Sweet, Howard Crompton Herbert