Hdcp Management; Protected And Unprotected Content; Disable Unnecessary Encryption; Hdcp V2.2 - Lightware UBEX Series User Manual

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12. Technologies 12. Technologies
12.2. 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 matrix 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.
12.2.1. 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.
12.2.2. Disable Unnecessary Encryption
HDCP Compliant Sink
All the devices are HDCP-compliant, no manual setting is required, both
protected and unprotected contents are transmitted and displayed on
the sink.
Applied F-series endpoint firmware package: v1.4.1 | Applied R-series endpoint firmware package: v1.4.1 | Applied MMU firmware package: v1.2.1 | LDC software: v1.34.0b2
UBEX series – Matrix Application Mode – User's Manual UBEX series – Matrix Application Mode – User's Manual
Not HDCP-compliant Sink 1.
Non-HDCP compliant sink is connected to the endpoints. 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 endpoint, 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.
The layout is the same as in the previous case: non-HDCP compliant
display device is connected to the endpoints but the source would
send protected content with encryption. If HDCP is enabled on the
input port of the endpoint, the source will send encrypted signal. The
sink is not HDCP compliant, thus, it will not display the video signal
(but blank/red/muted/etc. screen). If HDCP is disabled on the input
port of the transmitter, the source will not send the signal. The solution
is to replace the display device to an HDCP-capable one.
12.2.3. HDCP v2.2
HDCP v2.2 is the latest evolution of copy protection. It is designed
to create a secure connection between a source and a display. The
2.x version of HDCP is not a continuation of HDCPv1, and is rather
a completely different link protection. One of the main differences is
the number of the allowed devices within a closed A/V system: HDCP
v2.2 allows 32 devices (HDCP v1.4 allows 128 devices). Further limit
is that up to four level is allowed which means the protected signal
can be transmitted over at most four repeater/matrix/switcher device.
HDCP content protection is activated only if an active video stream
is transmitted from the source to the display. The encryption is not
activated without a video signal.
HDCP v2.2 standard allows to apply a previous version of HDCP (e.g.
HDCP v1.4) between the source and the display if the source device
allows it. According to the standard if the image content is protected
with HDCP, the highest supported content protection level has to be
applied. However, if the highest level of protection is not justified by
the source content the level may be decreased to avoid compatibility
problems; this case is determined by the source.
HDCP v2.2 Source and HDCP v1.4 Sink
In this case the signal of an HDCP v2.2 compliant source is switched
to an HDCP v1.4 compliant sink device. The signal is encrypted with
HDCP v2.2 on the input and encrypted with HDCP v1.4 on the output
of the Lightware device. A lower level of encryption may be applied
only if the source device/content allows it - according to the HDCP
standard. In this case the HDCP setting on the input port has to be set
to HDCP 1.4 and depends on input on the output port.
The content is Stream type 0
The content is Stream type 1 (High-value content)
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