(54) METHODS AND ARRANGEMENTS
EMPLOYING DIGITAL CONTENT ITEMS
(75) Inventor: Geoffrey B. Rhoads, West Linn, OR (US)
(73) Assignee: Digimarc Corporation, Beaverton, OR (US)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
This patent is subject to a terminal disclaimer.
(21) Appl.No.: 12/350,816
(22) Filed: Jan. 8, 2009
(65) Prior Publication Data
US 2009/0125607 Al May 14, 2009
Related U.S. Application Data
(60) Division of application No. 11/039,720, filed on Jan. 19, 2005, now Pat. No. 7,515,733, which is a continuation of application No. 10/821,414, filed on Apr. 9, 2004, now Pat. No. 7,035,427, which is a continuation of application No. 09/545,174, filed on Apr. 6, 2000, now Pat. No. 6,775,392, which is a continuation of application No. 08/746,613, filed on Nov. 12, 1996, now Pat. No. 6,122,403.
(51) Int. CI.
H04K1/00 (2006.01)
(52) U.S. CI 382/115
(58) Field of Classification Search 382/100,
382/232; 380/28-30, 54-55, 200, 202, 203, 380/217; 705/50, 57, 58, 59; 707/1, 19; 713/167, 176, 179; 715/515, 516 See application file for complete search history.
Methods and arrangements for identifying content, and employing such identification, are detailed. One method embeds a plural-bit digital watermark into content, but first checks to see if the content is previously watermarked. Another method applies a digital watermark detection procedure to only a sub-portion of a digital content item. Yet another arrangement involves plural-portion content, where one portion is watermarked with first data governing its rights management, and another portion is watermarked with second data governing its rights management. Still another method concerns distribution of content items, where each is watermarked with a unique ID as part of the distribution process. Yet another method concerns deriving an identifier from content, and using the content to access related metadata from a remote computer system. Still other methods concern arrangements for recognizing content, and then providing links to information about the content creator, etc., in response. A variety of other technologies and improvements are also detailed.
87 Claims, 51 Drawing Sheets
