On Wed, Dec 26, 2007 at 02:52:22PM -0800, kelsey hudson wrote:
Yes. HDMI is rather evil in that it requires an authentication scheme or some sort of encryption in order to actually display. DVI->HDMI cable converters, while they carry the same signals, usually lack the encryption/authentication part. Or rather, more accurately, the DVI display device usually doesn't do that encryption/authentication. Very few, if any, TVs, will display HDMI from an unknown/untrusted source.
How annoying. I don't think that TVs are required to reject non-encrypted signals. Yes HDMI requires the authentication, but there isn't any reason a device can't also accept DVI on the connector as well. I have a device that does it in the other direction (encryption on a DVI connector).
This is the reason that you can't hook up a garden variety DVI flat panel to a cable box with HDMI or DVI out. Most flat panels intended for computer use don't support the auth/encryption. Yay for stupid copy protection schemes!
I do have one monitor that claims to accept the HDCP (the encryption used) on it's DVI connector. Supposedly with a HDMI->DVI cable, it could be plugged into a HD DVD player. There are license fees involved in doing it, so most probably avoid that. This monitor also has component video in. It's basically a tunerless TV. Dave -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
