Patents by Inventor Charles A. Asmuth

Charles A. Asmuth 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).

  • Publication number: 20050102506
    Abstract: A system for reducing piracy of protected digital content. An integrated module with public and private keys sends the public key along with a request for content to a transaction manager. The transaction manager uses the public key to produce a specially encrypted content bitstream which is sent to the integrated module. The integrated module uses the private key to decrypt the specially encrypted content bitstream to produce analog information that is available for subsequent use. The decrypted content bitstream is physically protected from access. Furthermore, the analog information can be watermarked such that re-digitizing the analog information would produce a traceable watermarked copy of the content.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 12, 2005
    Inventors: Albert Pica, Jeffrey Lubin, Charles Asmuth, Michael Isnardi
  • Patent number: 5272767
    Abstract: A management tool is disclosed which aids the user in controlling the flow of data from one database table to another in computer memory, particularly when both the potential amount of data and the number of programmed functions which can be performed upon or be controlled by the data are large.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: December 21, 1993
    Assignee: David Sarnoff Research Center, Inc.
    Inventors: Charles A. Asmuth, Suz-Hsi Wan, Peter M. Freitag
  • Patent number: 5261093
    Abstract: A multi-step method enables a user to extract useful information from a complex relational database without needing to construct elaborate Structured Query Language statements or to become familiar with details of the particular data model involved. In particular, the method generates a table of output data from a relational database having one or more database tables made up of columns of attributes, rows instances, and one or more keys composed of one or more attributes each as elements.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: November 9, 1993
    Assignee: David Saroff Research Center, Inc.
    Inventor: Charles A. Asmuth