Watermarking of image data using MPEG/JPEG coefficients
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 30, 2000
Grant Date -
N/A
app pub date -
Sep 19, 1996
filing date -
Sep 19, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A watermark is embedded into video/image/multimedia data using spread spectrum methodology. The watermark is extracted from watermarked data without the use of an original or unwatermarked version of the data by using MPEG/JPEG coefficients. The image to be watermarked is divided into subimages. Each subimage is embedded with a watermark. When extracting the watermark, the result from each subimage is combined to determine the originally embedded watermark.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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