Analog Way Di-VentiX II - Manual (Page 75)

APPENDIX
A. DI-VENTIX II HDCP Management
1- BASICS
The HDCP aim is to protect against unauthorized copy of movies. This is accomplished by encrypting pic-
tures from the source up to the display device. As Di-VentiX II is inserted between the source and the display
device, it manages both HDCP protected content (inputs) and HDCP compliant display devices (outuputs).
It is mandatory to decrypt and display an HDCP protected input only when a valid HDCP screen has
been detected on the output.
A Di-VentiX II HDCP input needs to continuously exchange information (keys) with the source in order to
decrypt the input pictures. The Di-VentiX II HDCP outputs have the same needs with the screens. You may
notice that it’s a key exchange, so the communication in the DVI cable needs to be bidirectional (from the
source to the Di-VentiX II input and from the Di-VentiX II input to the source).
2- USUAL PROBLEMS AND WORKAROUNDS
• Display screen on analog output:
As mentioned previously, it is forbidden to decrypt and display protected content on Non HDCP screens.
Only DVI outputs have the bidirectional communication capability requested for HDCP. So it is not possible
to display HDCP sources on analog outputs (RGBHV, YUV...).
• Display screen on SDI digital output:
As SDI output is not bidirectional, it is not possible to display HDCP sources on it.
• Non HDCP DVI display:
It is not possible to display HDCP sources on a non HDCP DVI display.
BluRay
BluRay
HDCP Screen
Picture
HDCP keys
HDCP keys
HDCP keys
Picture
Picture
Picture
non HDCP Screen
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