Signal continuity assessment using embedded watermarks

Patent metadata

Field	Value
Publication number	US-9055239-B2
Application number	US-88013907-A
Country	US
Kind code	B2
Filing date	Jul 19, 2007
Priority date	Oct 8, 2003
Publication date	Jun 9, 2015
Grant date	Jun 9, 2015

Abstract

Methods, apparatus, and systems for signal continuity assessment using embedded watermarks are provided. The embedded watermarks are recovered from the content and one or more attributes associated with the recovered watermarks are identified. A continuity of the content can then be assessed in accordance with the one or more attributes. The continuity assessment may be based on a variety of factors, including but not limited to a determined heartbeat of the recovered watermarks, a density, separation, location, or extent, of the recovered watermarks, as well as information associated with the watermarks, such as a stego key, channel bits, packet numbers, a fingerprint, or the like.

First claim

What is claimed is:

1. A method for assessing continuity of a content using embedded watermarks, comprising:
recovering the embedded watermarks from said content;
determining a density and separation of said recovered watermarks; and
assessing a continuity of said content by determining whether said density and separation conform to one or more predefined distributions.

2. The method of claim 1 , wherein said distributions are defined in accordance with…

Assignees

• Tehranchi Babak
• Petrovic Rade
• Winograd Joseph M
• Angelico Dean Anthony
• Verance Corp

Inventors

• Tehranchi Babak
• Petrovic Rade
• Winograd Joseph M
• Angelico Dean Anthony

Classifications

• H04N2201/3233

  Electricity · mapped topic

• H04L2463/103

  Electricity · mapped topic

• G06T1/0071 Primary

  Physics · mapped topic

• H04N1/32315

  Electricity · mapped topic

• H04N1/32101 Primary

  Electricity · mapped topic