Hdcp V2.2 - Lightware VINX-120-HDMI-ENC User Manual

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9.Technologies

9.3.3. 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/Vsystem:HDCPv2.2allows32devices(HDCPv1.4allows128devices).Furtherlimitisthatuptofour
levelisallowedwhichmeanstheprotectedsignalcanbetransmittedoveratmostfourrepeater/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.
HDCPv2.2standardallowstoapplyapreviousversionofHDCP(e.g.HDCPv1.4)betweenthesourceand
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
protectionisnotjustifiedbythesourcecontentthelevelmaybedecreasedtoavoidcompatibilityproblems;
this case is determined by the source.
HDCP v2.2 Source and HDCP v1.4 Sink
InthiscasethesignalofanHDCPv2.2compliantsourceisswitchedtoanHDCPv1.4compliantsinkdevice.
ThesignalisencryptedwithHDCPv2.2ontheinputandencryptedwithHDCPv1.4ontheoutputofthe
Lightwaredevice.Alowerlevelofencryptionmaybeappliedonlyifthesourcedevice/contentallowsit-
accordingtotheHDCPstandard.InthiscasetheHDCPsettingontheinputporthastobesettoHDCP1.4
and Depends on input on the output port.
HDCP v1.4 Source and HDCP v2.2 Sink
Thebelowexampleisthereversalofthepreviouscase.AnHDCPv1.4compliantsourcesendsasignalwith
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
keepingtheoriginalHDCPv1.4encryptionlevelontheoutput.
VINX-1x0-HDMIExtenders–User'sManual
What Kind of Signal Will be on the Output of the Lightware Device?
Seebelowtablethatsummarizesthepossiblecases:
HDCP v2.2 (not convertable)*
* 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.
Appliedfirmwarepackage:v2.0.2b4 | LDCsoftware:v2.5.2b3
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
89
HDCP v2.2. Compatible Sink
on the Output
HDCP v2.2
HDCP v2.2
HDCP v2.2