Video Over Ip; Hdcp Management; Protected And Unprotected Content; Disable Unnecessary Encryption - Lightware VINX-110-HDMI-DEC User Manual

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8. Technologies
8.2. Video Iver IP
Basics
Beside the traditional AV matrix switchers and extenders the video
over IP or networked AV system is the biggest leading technology in
the AV industry. The spreading of the technology speeds up the general
increasing of the using of the IT-related devices and equipment all
around the world - from the offices to the homes.
The main difference compared with the traditional AV technologies is
the method of the signal transmission: the networked AV transmitter/
encoder devices convert the video signal to TCP/IP packets and transfer
them to the receivers/decoders. The interface of the transmission can
be CATx or fiber optical cable depending on the signal bandwidth and
the distance between the source and sink devices.
What is TCP/IP?
DEFINITION:
TCP/IP, or the Transmission Control Protocol/Internet
Protocol, is a suite of communication protocols used to interconnect
network devices on the Internet or in a private network.
TCP/IP specifies how data is exchanged over the network by providing
end-to-end communications that identify how it should be broken into
packets, addressed, transmitted, routed and received at the destination.
TCP/IP requires little central management, and it is designed to make
networks reliable, with the ability to recover automatically from the
failure of any device on the network. *
The two main protocols in the Internet protocol suite serve specific
functions. TCP defines how applications can create channels of
communication across a network. It also manages how a message
is assembled into smaller packets before they are then transmitted
over the Internet and reassembled in the right order at the destination
address. *
IP defines how to address and route each packet to make sure it
reaches the right destination. Each gateway computer on the network
checks this IP address to determine where to forward the message. *
* Source: https://searchnetworking.techtarget.com/definition/TCP-IP
VINX-1x0-HDMI Extenders – User's Manual

8.3. 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.

8.3.1. 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.

8.3.2. Disable Unnecessary Encryption

HDCP Compliant Sink
Encrypted
signal
VIDEO LINK ACT.
STREAM ID POWER
MODE CONNECT
POWER ON DIP VIDEO
DVI cable VIDEO USB
1 2 3 4
HDMI 8-4-2-1 1GbE LAN
(LOCAL OUT) (AV OUT)
Protected VINX Encoder VINX Decoder
content
All the devices are HDCP-compliant, no manual setting is required, both
protected and unprotected contents are transmitted and displayed on
the sink.
Not HDCP-compliant Sink 1.
Unprotected
content
Non-HDCP compliant sink is connected to the matrix. 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 matrix, 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.
Protected
content
The layout is the same as in the previous case: non-HDCP compliant
display device is connected to the matrix but the source would send
protected content with encryption. If HDCP is enabled on the input
port of the matrix, 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
Encrypted
of the matrix, the source will not send the signal. The solution is to
signal
replace the display device to an HDCP-capable one.
VIDEO LINK ACT.
STREAM ID
ON DIP
DVI cable
1 2 3 4
HDMI OUTPUT 8-4-2-1 1GbE LAN
(AV INPUT)
HDCP-compliant
sink
Non-encrypted Non-encrypted
signal signal
VIDEO LINK ACT. VIDEO LINK ACT.
STREAM ID POWER STREAM ID
MODE CONNECT
POWER ON DIP VIDEO ON DIP
DVI cable VIDEO USB DVI cable
1 2 3 4 1 2 3 4
HDMI 8-4-2-1 1GbE LAN HDMI OUTPUT 8-4-2-1 1GbE LAN
(LOCAL OUT) (AV OUT) (AV INPUT)
VINX Encoder VINX Decoder
Non-HDCP
compliant sink
Encrypted
signal
VIDEO LINK ACT. VIDEO LINK ACT.
STREAM ID POWER STREAM ID
POWER MODE ON DIP CONNECT ON DIP
VIDEO
DVI cable VIDEO USB DVI cable
1 2 3 4 1 2 3 4
(LOCAL OUT) HDMI 8-4-2-1 (AV OUT) 1GbE LAN HDMI OUTPUT 8-4-2-1 (AV INPUT) 1GbE LAN
VINX Encoder VINX Decoder Non-HDCP
compliant sink
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