Method and apparatus for copy protection detection in a...

Details Method and apparatus for copy protection detection in a... Method and apparatus for copy protection detection in a...

2003-12-09

2009-10-13

Tran, Thai (Department: 2621)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C348S465000, C348S545000, C360S060000, C380S201000

Reexamination Certificate

active

07603025

ABSTRACT:
A method and apparatus for detecting copy protection included in an input video signal is described. Two types of copy protection are particularly addressed, including techniques that imbed copy protection pulses and copy protection phase flips in the video signal. A method for preserving copy protection is also presented, where the input video signal is first examined to determine if copy protection has been included in the input video signal. The input video signal then converted to component video data, which removes any copy protection present. An output video signal is then generated from the component video data, and when it was determined that the input video signal includes copy protection, the copy protection is recreated in the output video signal.

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