Method and apparatus for synthesizing copy protection for reducing/defeating the effectiveness or capability of a circumvention device
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United States of America Patent
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Oct 2, 2012
Grant Date -
Mar 4, 2010
app pub date -
Jan 28, 2009
filing date -
Aug 27, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A new copy protection signal includes resistance to certain circumvention devices and includes improved playability. The new copy protection signal causes the certain circumvention devices to pass substantially the copy protection effects to a video recorder or to allow for content control effectiveness on a compliant device. The new copy protection signal also causes the circumvention device to add or enhance copy protection effectiveness, which is contrary to the circumvention device's original intent of removing or reducing copy protection effectiveness. The new copy protection signal is provided by inserting or adding one or more pseudo sync pulses or one or more pseudo sync/AGC pulse pairs immediately after, or one line after, a vertical sync signal in at least one television line.
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Family
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Cited Art Landscape
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