The High-Definition Multimedia Interface (HDMI) is a compact audio/video
interface for transmitting uncompressed digital signal/data. It provides
alternative digital options to consumer analog cables such as coaxial
cable, Radio Frequency (RF), composite video, S-Video, SCART, component
video, D-Terminal, VGA and so on. Nowadays, HDMI is widely used on
connecting digital audio/video sources such as set-top boxes, digital
multimedia players, Blu-ray Disc players, video game consoles, AV
receivers and computer display cards etc. to compatible LCDs, Computer
Monitors, digital audio devices, and digital televisions.
HDMI supports standard, enhanced or high-definition video format,
along with up to 8 channels of digital audio on a single cable to
any TV or PC (with 10.2 Gbps of bandwidth). It is independent from
various digital television standards such as ATSC and DVB, as these
video streams can be decoded and output as uncompressed video stream
HDMI products have started shipping in autumn 2003. Over 800 Consumer
Electronics and Computer companies have adopted the HDMI specification/guideline
set by the HDMI founders, as HDMI Adopters. D&S Cable is proud
to present ourselves as one of the adopters by the HDMI founders.
The HDMI lastest version is HDMI1.3a. HDMI1.3a includes the following
• Higher speed - 10.2 Gbps
- Deep Color - increasing the color depth from millions
to billions of colors.
- Higher resolutions - over 400% greater resolution than
720p HDTV, 1080P HDTV, up to 1440P.
- High frame rates - higher refresh rates (up to 120 Hz)
for smoother motion
• New lossless audio formats
Support Dolby®TrueHD and DTS-HD Master
• Lip sync correction
HDMI 1.3 incorporates an automatic audio/video syncing
capability that allows devices to perform this synchronization
automatically with accuracy
• New mini connector
Type C connector introduced for portable devices such
as camcorders and digital cameras
• Deep Color support
HDMI 1.3 supports 30-bit, 36-bit and 48-bit (RGB or YCbCr)
color depths, up from the 24-bit depths in previous versions of the
• Broader color space
Supports the next-generation "xvYCC" color space.
It is 1.8 times as many colors as existing HDTV signals
DisplayPort(DP) is a newly used digital display interface standard
guided by the Video Electronics Standards Association (VESA). DP was
first approved on May 2006. The latest version 1.1a was released by
VESA for April 2, 2007.
Displayport is defined as a new, high-definition digital audio/video
interconnect for computing displays, graphic cards, and laptops.
With a 34% PCs market penetration forecast in 2010, Displayport
is expected to replace DVI and VGA, or even the HDMI equivalent
for computers systems.
DisplayPort supports the following features:
• Support a maximum of 10.8Gbit/s and 2560 x 1600 resolutions
• Support a minimum of 1080p resolution at 24bpp, 50/60 Hz over
4 lanes at 15 meters
• Provide both digital video and audio in one cable
• Support industry standard colorimetry specifications for consumer
electronics devices including RGB and YCbCr 4:2:2 and
• Support up to 8 channels of LPCM coded audio at 192 kHz with
a 24 bit sample size
• Composites of smaller connector footprint than either DVI
• Support HDCP(High-Definition Content Protection) which uses
128-bit AES encryption
• Support hot plug and un-plug detection and link status-failure
• Support the 1Mbps bidirectional auxiliary channel