Information signal reproducing apparatus, information signal...

Details Information signal reproducing apparatus, information signal... Information signal reproducing apparatus, information signal...

2006-04-18

2006-04-18

Dixon, Thomas A. (Department: 3639)

Data processing: financial, business practice, management, or co

Business processing using cryptography

Usage protection of distributed data files

Reexamination Certificate

active

07031942

ABSTRACT:
An information signal reproducing apparatus for reproducing an information signal from a recording medium on which the information signal, including added copy control information is recorded, comprising a first detector for detecting whether the information signal read out from said recording medium is encrypted or not-encrypted and for producing an output representative thereof; a second detector for detecting said copy control information from the information signal read out from the recording medium and for producing an output representative thereof; and a controller for selectively restricting reproduction of the information signal based on the outposts of the first detector and the second detector.

REFERENCES:
patent: 5613004 (1997-03-01), Cooperman et al.
patent: 5892900 (1999-04-01), Ginter et al.
patent: 6236727 (2001-05-01), Ciacelli et al.
patent: 6282654 (2001-08-01), Ikeda et al.
patent: 6289102 (2001-09-01), Ueda et al.
patent: 6347846 (2002-02-01), Nakamura
patent: 6434322 (2002-08-01), Kimura et al.
patent: 1 005 040 (2000-05-01), None
Aiken, John; How watermaking adds value to digital content; Jul. 1998; Communications of the ACM v41n7 pp 74-77; dialog copy pp. 1-4.

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