Server-side watermark data writing method and apparatus for digital signals
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 27, 2007
Grant Date -
N/A
app pub date -
Sep 2, 1999
filing date -
Sep 2, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A digitized signal is published with a blank watermark, i.e., a watermark which contains no specific watermark data, and a server computer system encodes specific watermark data into the watermark signal for each delivery of the digitized signal. A basis signal which is used to watermark a digitized signal is predetermined to enable embedding of transaction-specific watermark data to be embedded in the subject signal with minimal processing resources. Since the basis signal generally accounts for the majority of the processing resources required to watermark the subject signal, only a relatively small portion of the requisite processing resources are used to embed transaction-specific watermark into the subject signal.
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