Mark -- I don't think you and Bob are in conflict:
- Bob is saying that the lack of HDCP support by the Pio display should "ripple back" through the DVI chain, i.e., HD TiVO should see it as a non-content protected chain. I suspicious that this is not the case, as I believe my current HDMI Status display says "HDCP enabled". (I'll double check this tonight.)
- You are saying that source material (i.e., the HD TiVo) determines whether the chain must have content protection enabled in order to be displayed.
I am watching D* source material for which HDCP is not enabled. Therefore, regardless of the HDCP capability of my display, I should not lose my HDMI/DVI output signal. And...even if we are wrong and there is
content-protected material coming out of, say, HBO-H, then I should get a message display (as per Bob's previous post) , not a blank or snowy screen for all channels
, followed by ultimate failure.
However, it *is* distinctly possible that D* / Hughes (or Tag McLaren) screwed up the HDCP handshaking...and/or
HDMI connector problem creates a bogus HDCP situation. For example, (excuse my sophomoric reading of the HDCP 1.0 spec
), if bogus HDCP system renewability messages were received by the HD TiVO that somehow slowly revoked all of the HD TiVo's or the Tag scaler's "secret device keys", then eventually, the HD TiVo HDMI/DVI might become unusable. I say "might" because I don't know if revokation of all of any of the chain's keys causes the entire link to go down, irregadless of the content protection request. I would hope the HDCP protocol is written such that the DVI chain would still work for non-protected source material even if all secret device keys on all HDCP devices (transmitter, repeaters, receivers) were revoked.
The problem with Aurora's A304-HDCP board is that it is not a true digital connection, i.e., it converts the DVI signal to analog...and then back again to digital, it has it's own scaler (I already have an expensive one), etc. There's been a lot of discussion about this in this forum. But, yes, I'll eventually have to buy this (or the much delayed and possibly never-to-be Key Digital Pioneer option card) , but only when I want to watch content-protected material.
Tonight I will try out Channel 201 and see what happens...and post the results. I'll also spend some more time reviewing the HDCP 1.0 and 1.1 specs. I think this should be a very good opportunity to understand how (and if) HDCP works on the D* HD TiVo...