Invention Grant
US08032758B2 Content authentication and recovery using digital watermarks 有权
使用数字水印进行内容认证和恢复

  • Patent Title: Content authentication and recovery using digital watermarks
  • Patent Title (中): 使用数字水印进行内容认证和恢复
  • Application No.: US12138198
    Application Date: 2008-06-12
  • Publication No.: US08032758B2
    Publication Date: 2011-10-04
  • Inventor: Jun Tian
  • Applicant: Jun Tian
  • Applicant Address: US OR Beaverton
  • Assignee: Digimarc Corporation
  • Current Assignee: Digimarc Corporation
  • Current Assignee Address: US OR Beaverton
  • Main IPC: H04L9/00
  • IPC: H04L9/00
Content authentication and recovery using digital watermarks
Abstract:
The disclosure describes methods for using digital watermarking to authenticate digital media signals, such as images, audio and video signals. It also describes techniques for using embedded watermarks to repair altered parts of a media signal when alteration is detected. Alteration is detected using hashes, digital watermarks, and a combination of hashes and digital watermarks.
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