Recording medium, recording method of recording medium,...

Details Recording medium, recording method of recording medium,... Recording medium, recording method of recording medium,...

2001-05-31

2008-10-07

Moazzami, Nasser (Department: 2136)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S201000

Reexamination Certificate

active

07434055

ABSTRACT:
A recording medium in which a plurality of management information are embedded and recorded into data of contents in a plurality of forms of different remaining intensities, and at least one of the plurality of management information is the management information whose restriction is more severe than those of the other management information.

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Sako, Applicant's admitted prior art, Jan. 30, 2002, Backround Art, specification, p. 1.
4C Entity, LLC, “4C 12 Bit Watermark Specification,” Oct. 29, 1999, accessed from http://www.4centity.com/data/tech/4cspec.pdf.

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