Display Interface Comparison Table - Compaq 8000 - Elite Convertible Minitower PC Introduction Manual

Display Interface Comparison Table

VGA
Connector type 15-pin high-
density D-
subminiature;
often with
thumbscrews for
latching.
Capacity/ Indef.; usually OK
bandwidth to about 150+
MHz pixel rates.
Electrical layer 0.7 Vp-p analog
video with
separate TTL
syncs.
Audio No support
Content protection None
Other channels VESA Display
Data Channel
(DDC)
Controlling None; DDC
authority version was
established by
VESA.
* - TMDS - Transition Minimized Differential Signaling, a Silicon Image trademark for their proprietary differential-
drive electrical layer.
** - HDCP - High Definition Content Protection, referring to a system developed by Intel and licensed by Digital
Content Protection, LLC, see http://www.digital-cp.com/home for more information.
NOTE: DisplayPort also supports DPCP, a content protection system developed for the interface by Philips
Semiconductor. Neither HDCP or DPCP are mandated by the DisplayPort standard, and both
specifications are separate and maintained by their respective originators. At this point, HDCP is expected
to be the content-protection system of choice on all DisplayPort implementations.
DVI HDMI
Unique 24-pin, 3- Unique 19-pin
row main field plus dual-row connector
4 pin MicroCross (HDMI-A)
section if DVI-I
4.8 Gbit/sec. 4.8 Gbit/sec.
(single-link); 9.6 through HDMI 1.2;
Gbit/sec. (dual- HDMI 1.3 spec to
link) ~9.6 Gbit/sec.
Silicon Image Silicon Image
TMDS*, 3 or 6 TMDS*, 3 data
data pairs plus pairs plus clock
clock pair. pair.
No support Yes; effectively
mandatory on
HDMI-A
HDCP** (opt.) HDCP** (opt.)
VESA DDC VESA DDC,
Consumer
Electronics Control
(CEO)
Digital Display HDMI Founders;
Working Group HDMI Licensing,
(defunct) LLC
DisplayPort
Unique 20-pin dual-row
connector with latch.
Up to 10.8 Gbit/sec. if
all four lanes used.
PCI-Express, 1, 2, or 4
data pairs ("lanes") with
embedded clock.
Optional
HDCP** (opt.)
AUX channel (1Mbit/sec.,
bidirectional gen.
purpose)
Video Elect. Standards
Association (VESA)
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