Kramer Electronics VM-2DP - Manual (Page 7)

4 VM-2DP - Overview
• Version 1.1 supports HDCP (see section 3.2 )
• Supports two-way communication over its auxiliary channel between the
video source (for example, a PC) and the digital display, enabling new
functionality such as automatic configuration and one-button play
• Replaces the interface needed between the PC and an external display, as
well as the low voltage differential signaling (LVDS) interface in notebook
computers, monitors, to connect to LCD panels
3.2 About HDCP
The High-Bandwidth Digital Content Protection (HDCP) standard developed by Intel
protects digital video and audio signals transmitted over DVI or HDMI connections
between two HDCP-enabled devices to eliminate the reproduction of copyrighted
material. To protect copyright holders (such as movie studios) from having their
programs copied and shared, the HDCP standard provides for the secure and
encrypted transmission of digital signals.
3.3 Defining EDID
The Extended Display Identification Data (EDID) is a data-structure provided by a
display, to describe its capabilities to a graphics card (that is connected to the
display’s source). The EDID enables the
VM-2DP to “know” what kind of monitor is
connected to the output. The EDID includes the manufacturer’s name, the product
type, the timing data supported by the display, the display size, luminance data and
(for digital displays only) the pixel mapping data.
EDID is defined by a standard published by the Video Electronics Standards
Association (VESA).