On Dec 1, 2009, at 7:22 PM, Jon Delfin wrote: > I was wondering about what Kevin said about the VCR knowing a > protected DVD shouldn't be copied. Isn't that because the DVD has a > code included in its audio or video signal? So it's not that the VCR > is reaching out to the DVD player, but that the DVD player is sending > out a block?
It's because the video on the DVD is encoded in such a way that the DVD player (and the TV) can handle the signal fine, but the VCR can't. Copy-protection on prerecorded VHS tapes worked similarly: the VCR could deal with it upon playback, but it would "confuse" a VCR that's trying to record it. Wikipedia is happy to explain: http://en.wikipedia.org/wiki/Rovi_Corporation#Content_Protection -- Jim Ellwanger <train...@ellwanger.tv> <http://www.ellwanger.tv> -- TV or Not TV .... The Smartest (TV) People! You received this message because you are subscribed to the Google Groups "TV or Not TV" group. To post to this group, send email to tvornottv@googlegroups.com To unsubscribe from this group, send email to tvornottv-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/tvornottv?hl=en
