MODEX-OPTS, MODEX-OPTM
User’s Manual
Section 3. Technologies
Page 25 / 113
3.3.2. Real life examples
HDCP-compliant sink
Figure 3-2. HDCP-compliant sink (HDMI/DVI)
All devices are HDCP-compliant, no special setting is required, both protected and
unprotected content is transmitted and displayed on the sink.
Non-HDCP-compliant sink (HDMI/DVI) 1.
Figure 3-3. Non-HDCP compliant sink displaying unprotected content
Non-HDCP compliant display device is connected to the receiver. Some sources (e.g.
computers) always send HDCP encrypted signals if the receiver device reports HDCP
compliancy, however HDCP encryption is not required all the time (e.g. computer desktop
image). If HDCP is enabled in the extenders, the image will not be displayed.
On MODEX extenders HDCP mode can be set to Auto. In this case the transmitted signal
will not be encrypted if the content is not protected. Thus non-HDCP compliant sinks will
display non-encrypted signal.
Non-HDCP-compliant sink (HDMI/DVI) 2.
Figure 3-4. Non-HDCP compliant sink and protected content
The layout is the same as in previous case: non-HDCP compliant display device is
connected to the receiver. Now the difference is that the content is protected, thus the
source is sending encrypted signal. In this case the extenders’ HDCP setting has no effect:
the source sends encrypted signal, since the content is protected. The display device will
show blank red, muted screen or pop up an error message that the sink is not HDCP-
compliant. The solution is to replace the display device to a HDCP-capable one.
MODEX
Transmitter
HDCP-compliant sink
Protected
content
HDMI cable
Encrypted signal
Fiber optical
cable
MODEX
Receiver
Encrypted signal
HDMI cable
Non-HDCP
compliant sink
Unprotected
content
Non-encrypted signal
Non-encrypted signal
MODEX
Transmitter
HDMI cable
Fiber optical
cable
MODEX
Receiver
HDMI cable
Non-HDCP
compliant sink
Protected
content
Encrypted signal
MODEX
Transmitter
HDMI cable
Fiber optical
cable
MODEX
Receiver
HDMI cable