Method and apparatus for storing copy protection information separately from protected content
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United States of America Patent
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Jan 29, 2013
Grant Date -
Nov 27, 2008
app pub date -
Aug 6, 2008
filing date -
Oct 19, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A copy protection apparatus and method enabling storage of copy protection information separately from protected content is disclosed. One embodiment includes a digital data signal receiver to receive a digital data signal, the digital data signal receiver also to receive a copy protection signal produced from a copy protection information file being storable on a copy protection information storage device, a digital to analog converter operatively connected to the digital data signal receiver for converting the digital data signal to an analog signal, and a signal modifier connected to the digital to analog converter and the digital data signal receiver to produce a viewable copy protected analog signal from the analog signal and the copy protection signal, the copy protection signal specifying a modification to the analog signal to change video lines of the analog signal.
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