Patents by Inventor Edward J. Delp, III

Edward J. Delp, III 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).

  • Hiding of encrypted data
    Patent number: 6912658
    Abstract: A method of data hiding includes providing a message (68), providing an encrypting sequence (86), and generating an encrypted message (72) based on the message and the encrypting sequence. A carrier signal (66) that conveys information unrelated to the encrypted message is provided, and the encrypted message is embedded (78) into the carrier signal by performing an exclusive-OR of the encrypted message with a first portion of the carrier signal.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: June 28, 2005
    Assignee: Purdue Research Foundation
    Inventors: Jordan J. Glogau, Edward J. Delp, III, Raymond B. Wolfgang, Eugene Ted Lin
  • Authentication of signals using watermarks
    Patent number: 6625295
    Abstract: A method of determining if at least a portion of a suspect signal (58) is derived from a watermarked original signal (56) includes the steps of providing a watermark (50) and creating the watermarked original signal (56) by incorporating the watermark (50) onto an original signal (52). At least one first watermark indicator is generated (64) based on the the watermarked original signal (56) and the watermark (50) and at least one second watermark indicator is generated (62) based on the suspect signal (58) and the watermark (50). A determination is made (66, 68, 70) whether at least a portion of the suspect signal (58) is derived from the watermarked original signal (56) is made based on the at least one first watermark indicator (64) and the at least one second watermark indicator (62).
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: September 23, 2003
    Assignee: Purdue Research Foundation
    Inventors: Raymond B. Wolfgang, Edward J. Delp, III