Method and apparatus for modifying a video signal

Details Method and apparatus for modifying a video signal Method and apparatus for modifying a video signal

1991-08-30

1995-03-28

Barron, Jr., Gilberto

Cryptography

Cryptanalysis

380 15, 360 371, 360 60, 348476, 358335, G11B 1504, H04N 7087, H04N 576

Patent

active

054024889

ABSTRACT:
A standard video signal is processed by including an interval of an insertion signal whose potential varies continuously between the video sync tip level and a level substantially above blanking level during at least part of the active interval of at least one blank line in the vertical blanking interval.

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