Barco ACS-2048 User Manual page 15

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HDCP stands for High-Bandwidth Digital Content Protection, an industry-wide copy
protection scheme that is used to prevent the potential interception of digital data between
the source (e.g., a Blu-Ray player) and the target display (e.g., a digital cinema projector).
The HDCP format was designed by Intel, and it uses an "authentication and key exchange"
procedure to accomplish the required protection. For proper implementation, products that
are compatible with the HDCP format require a secure connection to a compliant display,
such as a digital cinema projector.
In digital cinema applications in which an ACS-2048 is used, when an HDCP compliant
device is connected to the ACS-2048, an HCDP "session" is created. In this session
(which is transparent to the user), "keys" are exchanged between the source device (e.g., a
Blu-Ray player) and the digital cinema projector. The source device queries the display to
ensure that the equipment is HDCP compliant before video is shown. Note that non-HDCP
equipment such as PCs will work with any DVI compliant display, but HDCP compliant
equipment only shows content on HDCP compliant displays.
Please note the following important points:
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ACS-2048 • User's Guide
When an HDCP compliant device is connected to the ACS-2048 and that specific
input is selected, the Status Menu indicates if HDCP is enabled.
If the "session" determines that the target display device is non-HDCP compliant
(e.g., if the user is attempting to make an illegal copy on an external recorder), an
error message appears on the ACS-2048's Status Menu, indicating that video
cannot be shown.
HDCP compliant repeaters cannot be connected to the output of the ACS-2048,
as the ACS-2048 must be the last device in the HDCP "chain" — prior to the
HDCP compliant display device (projector). If an HCDP repeater is connected,
the message "HDCP Violation" appears on the Status Menu. Refer to the
"Status Menu" section on page 67 for additional details.
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About the ACS-2048
15