Lightware MMX2-4x3-H20 User Manual page 130

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10. Technologies
10.2.3. 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). A 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 the application of 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 needs 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.
MMX2 series – User's Manual
HDCP v1.4 Source and HDCP v2.2 Sink
The example below 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 needs 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:
HDCP v2.2 (not convertable)*
* Stream type 0: the video stream allows the conversion of the signal to apply a lower level of encryption.
** Stream type 1: the video stream does not allow the conversion of the signal.
Applied firmware package: v2.9.0b6 | LDC software: v2.7.6b4
HDCP v1.4 Compatible Sink
Incoming Signal
on the Output
HDCP v1.4 HDCP v1.4
HDCP v2.2 (convertable)* HDCP v1.4
Red screen
130
HDCP v2.2. Compatible Sink
on the Output
HDCP v2.2
HDCP v2.2
HDCP v2.2