Method to provide the generation of an incorrect or...

Details Method to provide the generation of an incorrect or... Method to provide the generation of an incorrect or...

2006-08-29

2006-08-29

Song, Hosuk (Department: 2135)

Information security

Prevention of unauthorized use of data including prevention...

Copy detection

C386S349000

Reexamination Certificate

active

07100209

ABSTRACT:
Techniques for modifying the characteristic signals of the Vertical Blanking Interval (VBI) are disclosed for the generation of an incorrect or unreliable vertical or frame rate signal, via particular characteristics and/or peculiarities of the signals in the VBI. The incorrect or unreliable vertical rate or frame signal is utilized to modify an anti-copy protection signal or a normal video signal.

REFERENCES:
patent: 3963865 (1976-06-01), Songer
patent: 4100575 (1978-07-01), Morio
patent: 4631603 (1986-12-01), Ryan
patent: 4803552 (1989-02-01), Marin
patent: 4890319 (1989-12-01), Seth-Smith et al.
patent: 5194965 (1993-03-01), Quan et al.
patent: 5822425 (1998-10-01), Ezaki et al.
patent: 6690880 (2004-02-01), Rinaldi

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