Method and apparatus for copy protecting video content and...

Details Method and apparatus for copy protecting video content and... Method and apparatus for copy protecting video content and...

2006-08-15

2006-08-15

Tran, Thai (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

Reexamination Certificate

active

07092616

ABSTRACT:
A copy protection apparatus is disclosed for processing a video signal to produce normal quality video for display on a display device and so as to inhibit the making of high quality reproductions therefrom while allowing lower quality reproductions to be made. The apparatus includes a first signal modification element that alters a normal quality video signal to produce a first modified signal such that, if reproduced, an unusable video copy is produced, and wherein the first modified video signal, when output to a display device is viewable as normal quality video on the display device. The apparatus further includes a second signal modification element that degrades the video signal to produce a second video signal of reduced quality. This reduced quality signal can be output to a reproduction device for copying.

REFERENCES:
patent: 4577216 (1986-03-01), Ryan
patent: 4907093 (1990-03-01), Ryan
patent: 5130810 (1992-07-01), Ryan
patent: 5315448 (1994-05-01), Ryan
patent: 5889919 (1999-03-01), Inoue et al.

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