Routing networks for use with watermark systems

Details Routing networks for use with watermark systems Routing networks for use with watermark systems

2005-11-15

2005-11-15

Couso, Jose L. (Department: 2621)

Image analysis

Applications

Reexamination Certificate

active

06965683

ABSTRACT:
A watermark embedded in a content (e.g., a printed document, digital audio, etc.) includes data that associates the content with a remote store of related data. For example, an image watermark may contain an index value that identifies a database record specifying (a) the owner's name; (b) contact information; (c) license terms and conditions, (d) copyright date, (e) whether adult content is depicted, etc., etc. Or a magazine advertisement may contain an index value that identifies a database record specifying a related URL. Sometimes there are several back-and-forth exchanges between the decoding device and the database. To speed response time, it is desirable that this traffic be exchanged with a database that is located close—in network proximity—to the device that decodes the watermark. In one embodiment this is accomplished by first querying a master database with the zip code, or other identifier, of the decoding device. The first database then responds by identifying a second, nearby database with which further traffic should be exchanged.

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