Kramer Electronics Ltd.
TP-594Txr, TP-594Rxr
– Extending and Routing Control Signals
20
Extending HDMI CEC Commands via HDMI
Connections
CEC enables the user to control all HDMI connected devices. In the extender (transmitter
receiver) system, all the connected HDMI devices can communicate to each other, via
standard HDMI-embedded CEC control channel, allowing control of one HDMI-connected
device by another.
The example in
shows an AV receiver on the transmitter side and a smart TV on
the receiver side, connected via HDMI, both CEC-enabled. The IR remote control unit that
points to the smart AV can send commands, such as audio mute or volume up/down, to
control either the smart TV and/or the AV receiver on the transmitter side, via the end-to-end
CEC control channel, extended over the HDBT link.
Figure 21: CEC End-to-End Extension
Routing IP-Driven Control Signals via Built-in Control
Gateway
Remote IP connected clients can send from the LAN, via the
TP-594Rxr
built-in control
gateway, CEC, RS-232 and IR commands, to control devices connected to
TP-594Rxr
HDMI-CEC, RS-232 and IR control ports. The built-in control gateway sends the control
commands (converted from the client received IP messages) to the connected controlled
devices, and distributes the responses received from the connected controlled devices to all
connected clients.
TP-594Rxr
built-in control gateway connection. On the transmitter,
KT-107
(with Kramer Control) is connected to the Ethernet port via LAN.
KT-107
sends IP
commands to the receiver control gateway, over the HDBT LAN connection, to send control
messages to, and receive control responses from:
•
The smart TV connected to the receiver via either the IR, RS-232 and/or HDMI (CEC)
ports.
•
The AV Receiver connected to the transmitter via the HDMI (CEC) port.
DRAFT
