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How does HDCP work?
• Implementation of HDCP requires a license obtainable
from the Digital Content Protection, LLC, which then
issues a set of unique secret device keys to all authorized
devices. During authentication, the receiving device only
accepts content after it acknowledges the keys. To
further prevent stealing of the data or line tapping, the
transmitter and receiver generate a shared secret value
that is constantly checked throughout the transmission.
After authentication is established, the transmitter
encrypts the data and sends it to the receiver for
decryption.
What happens if I lose signal to the display while watching
a movie on a HDCP-equipped component?
• The component must be restarted to establish
renegotiation.
For example, while watching a movie on a HDCP-enabled
DVD player, you change the receiving device (DTV,
monitor, or projector) input to watch broadcast TV, then
change the input back to watch the DVD movie. However,
you are unable to watch the movie. This is because when
the input was changed, the receiver lost the HDCP signal.
Restart the HDCP-enabled DVD player to allow
renegotiation.
My computer has an HD-DVD or Blu-Ray DVD player and I
receive an error message when I try to play an HD or
Blu-Ray DVD
• This issue occurs when you have your PC desktop set to
2560 x 1600 (Dual-Link mode) resolution. Currently, PC
graphics cards are incapable of negotiating the HDCP
key while in Dual-Link mode. HDCP key negotiation is
required to play consumer High Definitions DVDs. To
resolve this issue, set your Windows desktop resolution
to 1920 x 1200 before playing your HD or Blu-Ray DVD.
For more information about adjusting settings in
Windows, see “Changing Windows screen settings” on
page 38.
What is the cause if a movie starts and then slowly fades
to static?
• The receiving device is not HDCP compatible or it is not
negotiating correctly. Restart the video source and
re-plug all video cables from the source to the monitor.
How do I know if a component is HDCP compliant?
• If the video source device does not have a DVI or HDMI
connection, it is not HDCP compliant.
8512322_XHD3000 Usr Gde.book Page 51 Friday, August 10, 2007 12:33 PM