CP TECHNOLOGIES 4 CH Digital Video System Instrukcja Użytkownika Pobierz pdf (Strona 5)

For completeness, it is worth noting that home theater systems may also contain HDMI

switches that select from multiple source inputs and forward the selected data stream via a

single HDMI output. Most switches do not decrypt or encrypt content—they simply provide a

way to link sources and sinks together; therefore they are not true HDCP repeaters. However,

these switching functions may also be incorporated into true repeaters or into sinks.

HDCP usage scenarios

HDCP sources, repeaters and sinks may connect together in a tree-shaped topology with up to

seven levels and 127 devices. This enables many dierent combinations of devices. Encrypted

HDCP content ows through this topology over HDCP-protected interfaces.

Each encrypted HDCP communication takes place between a single transmitter and receiver.

Several communication sessions may take place simultaneously within a tree; a source could

be sending content to a repeater while the repeater is retransmitting the content to a display,

for example. At any given moment, only one device within the topology is acting as a content

source; however, multiple HDMI transmitters may be operating because repeaters are capable

of sending this content to several dierent sinks.

Blu-Ray Player

Set-Top Box

AV Receiver

Game Console

Figure 2.

A common home theater tree-

shaped topology. Three sources

(a Blu-ray player, set-top box and

game console) are connected to

a repeater (audiovisual receiver)

which is connected to a sink (TV). All

communication among the devices

in the tree is protected by HDCP.

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CP TECHNOLOGIES 4 CH Digital Video System Instrukcja Użytkownika Strona 5