Hdcp Management; Protected And Unprotected Content; Disable Unnecessary Encryption - Lightware UMX-TPS-TX100 Series User Manual

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10. Technologies
10.2. HDCP Management
Lightware Visual Engineering is a legal HDCP adopter. Several functions have been developed which helps
to solve HDCP related problems. Complex AV systems often have both HDCP and non-HDCP components.
The transmitter allows transmitting HDCP encrypted and unencrypted signals. The devices will be still
HDCP compliant as they will never output an encrypted signal to a non-HDCP compliant display device. If
an encrypted signal is switched to a non-compliant output, a red screen alert or muted screen will appear.
10.2.1. Protected and Unprotected Content
Many video sources send HDCP protected signal if they detect that the sink is HDCP capable – even if
the content is not copyrighted. This can cause trouble if an HDCP capable device is connected between
the source and the display. In this case, the content cannot be viewed on non-HDCP capable displays and
interfaces like event controllers. Rental and staging technicians often complain about certain laptops, which
are always sending HDCP encrypted signals if the receiver device (display, matrix router, etc.) reports HDCP
compliancy. However, HDCP encryption is not required all the time e.g. computer desktop image, certain
laptops still do that.
To avoid unnecessary HDCP encryption, Lightware introduced the HDCP enabling/disabling function: the
HDCP capability can be disabled in the Lightware device. If HDCP is disabled, the connected source will
detect that the sink is not HDCP capable, and turn off authentication.
10.2.2. Disable Unnecessary Encryption
HDCP Compliant Sink
Encrypted
signal
VGA Audio1
HDMI/DVI/DP HDMI HDMI
DP DP
DVI-D DVI-D
VIDEO AUDIO
VGA IN AUDIO1 IN HDMI IN DP IN INPUT STATUS
Protected UMX-TPS-TX100 series
cable
content transmitter
All the devices are HDCP-compliant, no manual setting is required, both protected and unprotected contents
are transmitted and displayed on the sink.
CATx Encrypted
cable signal
HDCP RESET
Autoselect HDMI
DVI-A Video
Audio2
VIDEO AUDIO SHOW
SELECT SELECT ME
Compatible
cable
TPS receiver
UMX-TPS-TX100 series – User's Manual
Not HDCP-compliant Sink 1.
Non-encrypted
HDMI/DVI/DP
Unprotected
content
Not-HDCP compliant sink 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 transmitter, the image will not be
displayed on the sink.
Setting the HDCP parameter to Auto on the output port and disable HDCP on the input port, the transmitted
signal will not be encrypted if the content is not protected. Thus, non-HDCP compliant sinks will display non-
encrypted signal.
Not HDCP-compliant Sink 2.
Encrypted
HDMI/DVI/DP
Protected
content
The layout is the same as in the previous case: non-HDCP compliant display device is connected to the
receiver but the source would send protected content with encryption. If HDCP is enabled on the input port
of the transmitter, the source will send encrypted signal. The sink is not HDCP compliant, thus, it will not
HDCP-compliant
display the video signal (but blank/red/muted/etc. screen). If HDCP is disabled on the input port of the
sink
transmitter, the source will not send the signal. The solution is to replace the display device to an HDCP-
capable one.
CATx
signal cable
VGA Audio1 HDCP RESET
HDMI HDMI Autoselect
DP DP DVI-A Video
DVI-D DVI-D Audio2
VIDEO AUDIO VIDEO AUDIO SHOW
VGA IN AUDIO1 IN HDMI IN DP IN INPUT STATUS SELECT SELECT ME
UMX-TPS-TX100 series
cable
transmitter
CATx
signal cable
VGA Audio1 HDCP RESET
DP HDMI HDMI DP DVI-A Video Autoselect
DVI-D DVI-D Audio2
VIDEO AUDIO
VGA IN AUDIO1 IN HDMI IN DP IN INPUT STATUS VIDEO SELECT SELECT AUDIO ME SHOW
cable UMX-TPS-TX100 series
transmitter
111
Non-encrypted
signal
HDMI
Compatible Non-HDCP
cable
compliant sink
TPS receiver
HDMI
Compatible cable Non-HDCP
TPS receiver compliant sink