HDCP Repeater bit
Encyclopedia
The HDCP Repeater bit is a part of the High-bandwidth Digital Content Protection
High-Bandwidth Digital Content Protection
High-bandwidth Digital Content Protection is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across connections...

 specification and applies to intermediate devices between the source device and the display. If an intermediate device is used but any of the components do not support the repeater bit, the HDCP encrypted connection will fail to pass video content.

Details

A set top receiver connected to an A/V receiver via an HDCP encrypted connection may have trouble passing video signals through the A/V receiver even though a direct connection to the display seems to work fine. This relates to the HDCP
High-Bandwidth Digital Content Protection
High-bandwidth Digital Content Protection is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across connections...

 protocol being sent and received, and the authentication process. This is not a fault of the receiver. Recently set top box manufacturers have become aware of this issue and some set top receiver manufacturers have already implemented firmware changes to their units while others are in the process of updating their units. If a set top receiver being used is having problems passing an HDCP encrypted connection video signal through an A/V receiver, contact the manufacturer of the set top receiver to see if an update is available.

The repeater bit is a part of the HDCP specification, which is available on the Digital Content Protection LLC web site.

The specification defines repeater devices:

HDCP Repeater. An HDCP Device that can receive and decrypt HDCP Content through one or more of its HDCP-protected Interface Ports, and can also re-encrypt and emit said HDCP Content through one or more of its HDCP-protected Interface Ports, is referred to as an HDCP Repeater. An HDCP Repeater may also be referred to as either an HDCP Receiver or an HDCP Transmitter when referring to either the upstream side or the downstream side, respectively.


The specification also refers to a "Repeater bit" in section 2.2, protocol.

See also

  • High-Definition Multimedia Interface
    High-Definition Multimedia Interface
    HDMI is a compact audio/video interface for transmitting uncompressed digital data. It is a digital alternative to consumer analog standards, such as radio frequency coaxial cable, composite video, S-Video, SCART, component video, D-Terminal, or VGA...

     (HDMI)
  • Digital Visual Interface
    Digital Visual Interface
    The Digital Visual Interface is a video interface standard covering the transmission of video between a source device and a display device. The DVI standard has achieved widespread acceptance in the PC industry, both in desktop PCs and monitors...

     (DVI)
  • High-bandwidth Digital Content Protection
    High-Bandwidth Digital Content Protection
    High-bandwidth Digital Content Protection is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across connections...

     (HDCP)
  • Repeaters
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