Copy generation management method, information signal...

Details Copy generation management method, information signal... Copy generation management method, information signal...

H - Electricity

04

L

H04L 9/32 (2006.01) G06T 1/00 (2006.01) G11B 20/00 (2006.01) H04N 5/765 (2006.01) H04N 5/913 (2006.01) H04L 12/64 (2006.01) H04N 5/775 (2006.01) H04N 5/85 (2006.01) H04N 9/79 (2006.01)

Patent

CA 2288585

To manage copy generations, additional information made of electronically watermarked information and other additional information are appended to an information signal. The updating of CGMS information and other additional information is managed based on the additional information made of the electronically watermarked information. Accordingly, additional information for copy generation management such as CGMS information can always be kept in a correct condition so that proper copy generation limitation control can always be performed.

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