Hdcp V2.2 - Lightware MX2-4x4-HDMI20-CA User Manual

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12. Technologies
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 AV
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 settings are:
HDMI port Allow HDCP 2.2 and HDCP 1.4
DP port Allow HDCP 2.2 and HDCP 1.4
INPUT OUTPUT
Depends on input or
Maximum possible
Auto or
Always
Applied firmware package: v1.7.0 | LDC software: v2.5.1b5
MX2-HDMI20 series – User's Manual
HDCP v1.4 Source and HDCP v2.2 Sink
The below example is the reversal of the previous case. An HDCP v1.4 compliant source sends a signal with
HDCP v1.4 encryption. The signal is switched to an HDCP v2.2 compliant sink device. In this case the
outgoing signal has to be encrypted with the highest supported encryption level towards the sink, as the
Lightware device and the sink are both HDCP v2.2 compliant. The HDCP v2.2 standard does not allow
keeping the original HDCP v1.4 encryption level on the output.
What Kind of Signal Will be on the Output of the Lightware Device?
See below table that summarizes the possible cases:
Incoming Signal
HDCP v1.4

HDCP v2.2

(convertible) *
HDCP v2.2 (not
convertible) *
* Stream type 0: the video stream allows to convert the signal to apply a lower level of encryption.
** Stream type 1: the video stream does not allow to convert the signal.
HDCP v1.4 HDCP v2.2.
Compatible Sink Compatible Sink
on the Output on the Output
HDCP v1.4 HDCP v2.2
HDCP v1.4 HDCP v2.2
Blank (or red) screen HDCP v2.2
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