• Supports standard, enhanced, high-definition video, and multi-
channel digital audio
1
on a single cable
• Transmits all ATSC HDTV standards and supports 8-channel digital
audio, with bandwidth to spare to accommodate future enhancements
and requirements
• Benefits consumers by providing superior, uncompressed digital
video quality via a single cable
2
, and user-friendly connector
• Is backward-compatible with DVI (Digital Visual Interface)
• Supports two-way CEC communication between the video source
(such as a DVD player) and the digital television, enabling new
functionality such as automatic configuration and one-button play
HDMI has the capacity to support existing high-definition video formats
(720p, 1080i and 1080p, 2K and 4K) as well as standard definition formats
such as NTSC or PAL
3.2 Defining the EDID
The Extended Display Identification Data (EDID
3
) 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-4HC 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.
3.3 Recommendations for Best Performance
To achieve the best performance:
• Connect only good quality connection cables, thus avoiding
interference, deterioration in signal quality due to poor matching, and
elevated noise levels (often associated with low quality cables)
• Avoid interference from neighboring electrical appliances and
position your VM-4HC away from moisture, excessive sunlight and
dust
1 HDMI supports multiple audio formats, from standard stereo to multi-channel surround-sound. HDMI has the capacity to
support Dolby 5.1 audio and high-resolution audio formats
2 HDMI provides the quality and functionality of a digital interface while also supporting uncompressed video formats in a
simple, cost-effective manner
3 Defined by a standard published by the Video Electronics Standards Association (VESA)
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