Patents by Inventor Peter David Wendt

Peter David Wendt 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).

  • Watermark resistant to rotation and resizing
    Patent number: 6985601
    Abstract: A hidden watermark and methods of detecting and embedding such watermark is provided. The watermark is resistant to efforts to avoid the message thereof.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: January 10, 2006
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventor: Peter David Wendt
  • Watermark resistant to resizing and rotation
    Patent number: 6845170
    Abstract: A hidden watermark and methods of detecting and embedding such watermark is provided. The watermark is resistant to efforts to avoid the message thereof.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: January 18, 2005
    Assignees: Sony Corporation, Sony Electronics, Inc.
    Inventor: Peter David Wendt
  • Method to detect watermark resistant to resizing and translation
    Patent number: 6795565
    Abstract: A method of detecting a block-based watermark is provided. The method detects the location of the watermark within a frame of content data regardless of whether the watermark has been shifted or resized.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: September 21, 2004
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventor: Peter David Wendt
  • Method to detect watermark resistant to resizing and translation
    Publication number: 20020126870
    Abstract: A method of detecting a block-based watermark is provided. The method detects the location of the watermark within a frame of content data regardless of whether the watermark has been shifted or resized.
    Type: Application
    Filed: March 8, 2001
    Publication date: September 12, 2002
    Applicant: Sony Corporation and Sony Electronics, Inc.
    Inventor: Peter David Wendt
  • Watermark resistant to resizing and rotation
    Publication number: 20020090109
    Abstract: A hidden watermark and methods of detecting and embedding such watermark is provided. The watermark is resistant to efforts to avoid the message thereof.
    Type: Application
    Filed: January 11, 2001
    Publication date: July 11, 2002
    Applicant: SONY CORPORATION
    Inventor: Peter David Wendt