Watermark embedding and extracting method for protecting digital audio contents copyright and preventing duplication and apparatus using thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jan 8, 2004
app pub date -
Jun 20, 2003
filing date -
Jun 8, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
In embedding a watermark in a digital audio contents, a model using a minimum audible limit of the digital audio contents is generated and a series of pseudo random number is masked to generate the watermark to be inserted in the digital audio contents In order to extract the watermark embedded in the digital audio contents, an auditory psychological model having a minimum audible limit, which depends on the characteristic of frequency generated from the digital audio contents, is formed to generate the watermark from a series of pseudo random number. After generating the watermark, the length of the watermark is adjusted according to the relationship of a signal processing between the adjacent digital audio contents. By measuring the correlation between the watermark and digital audio contents, it is possible to detect whether the watermark is inserted or not.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully