Copy control for a video signal with copyright signals superimpo

Details Copy control for a video signal with copyright signals superimpo Copy control for a video signal with copyright signals superimpo

1997-12-15

1999-11-23

Chin, Tommy P.

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

380 5, 380 20, H04N 591

Patent

active

059915005

ABSTRACT:
A video signal is processed to selectively permit copying by superposing in that portion of the video signal which does not contain useful picture information a copyright information signal indicative of whether the viewable picture that is displayed from the video signal is subject to copyright and a copy generation signal indicative of the number of successive generations of copies that can be made from the video signal.

REFERENCES:
patent: 5231546 (1993-07-01), Shimada
patent: 5315448 (1994-05-01), Ryan
patent: 5337157 (1994-08-01), Nakata

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