Patent ID: 8306403

Claim:
A method of controlling a digital video recorder, comprising the acts of: receiving a digital delivery video signal at a tuner or demodulator in the digital video recorder; extracting metadata from the received signal at the tuner or demodulator; deriving a control signal from the extracted metadata, wherein the control signal is a weakened color stripe signal and is detectable, but inadequate to prevent an acceptable video tape recording; and providing the weakened color stripe signal in a video signal output from the digital video recorder, wherein the incorrect color burst includes (a) 2 subcarrier cycles of normal phase angle, followed by 6.5 subcarrier cycles of incorrect phase angle, followed by 7 subcarrier cycles of normal phase angle, ±10%; or (b) 6.5 subcarrier cycles of incorrect phase angle, followed by 8.5 subcarrier cycles of normal phase angle, ±10%.