You said: >> More generally, does anyone know technical details about how these things >> actually work (beyond the obvious, I mean)? and I happen to have this answer from a person in the past... >The way they can add copy protection is through inserting a high-peak >outside the visual range of the tape. The TV ignores these peaks since it >can't do anything useful with them. The VCR will freak out over those >peaks and tries to adjust itself. The solution is to generate totally new >sync.pulse. It will kill any form of copy protection since you only can >use the sync-pulse to protect against copies. The system is called >MacroVision. To regenerate the sync pulse is the best solution. The copy >protection system works by high-peak insertion into main sync pulse, >confusing AGC into over adjustement. > >Lars. Cheers! B. Brian McGugan Box 15699 Main Post Office Vancouver B.C. Canada V6B 5B4 _/_/_/ _/_/_/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/_/ _/ _/ _/ WWW: http://www.ffa.ucalgary.ca/artists/bmcgugan/index.html ---- To signoff SCREEN-L, e-mail [log in to unmask] and put SIGNOFF SCREEN-L in the message. Problems? Contact [log in to unmask]