[opendtv] Re: HDTV-compatible PC display interface emerges

  • From: Jeroen Stessen <jeroen.stessen@xxxxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Thu, 22 Dec 2005 11:21:06 +0100

Bert Manfredi: 
> Is this mostly a connector design issue? 
> I'm not sure what UDI is trying to solve?

See also: http://www.tgdaily.com/2005/12/20/udisig_formation/

Intel's Simon Ellis told TG Daily that UDI will be a graphical interface 
"for the next ten years" 
and offer the bandwidth to support current and next-generation HD devices. 
"VGA is running 
out of steam at WQXGA resolution [2560 x 1600 pixel], which is currently 
supported by 
Apple's 30-inch Cinema display. We require much more performance than VGA 
can deliver." 
Ellis said that UDI will provide at least twice the performance capability 
of the maximum the 
display market demands today. "We are looking at 16 Gb/s bandwidth," he 

High Definition is not just about higher display quality, but also about 
content protection. 
The UDI therefore will also include an optional integration of HDCP (High 
Definition Content 
Protection) to ensure content companies that their content is protected 
from piracy.

The standard DVI (per 1.0 standard) allows only 4.95 Gbit/s over 
single link and 9.9 Gbit/s over dual link. Many manufacturers know 
that the single link could go faster, 6 to 8 Gbit/s, but the DVI 1.0 
standard does not allow it. 

Other things that I suppose are on the wish list: 
- mandatory content protection (like HDCP in HDMI), 
- more than 8-bits 4:4:4 resolution (RGB), 
- digital audio (as in HDMI), 
- cheaper connector (as in HDMI), 
- dropping the analog VGA signal for good (as in HDMI). 

So, my $0.02 guess: UDI will be a lot like dual-link HDMI, with 
perhaps more bit depth and slightly more speed (more pixels). 

The UDI site <http://udisigwebsite.org/> still says nothing... 
Also this Silicon Image press release can not be found anymore: 
Below the signature I have copied what Google has cached of it. 

-- Jeroen

| From:     Jeroen H. Stessen   | E-mail:  Jeroen.Stessen@xxxxxxxxxxx |
| Building: SFJ-5.22 Eindhoven  | Deptmt.: Philips Applied Technologies |
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| Skype:  callto:jeroen.stessen | Website: http://www.apptech.philips.com/ 

Press Release

Proposed New Interface to Bring Next-Generation Connectivity to PC 
Monitors and CE Devices

SAN FRANCISCO, December 20, 2005 ? Leading PC and consumer electronics 
companies today announced that they are working to develop a 
specification, referred to as the unified display interface (UDI), that is 
intended to serve as the next-generation digital display interface 
standard for PCs and provide compatibility with Consumer Electronics (CE) 
UDI is targeted to become the new display interface for desktop PCs, 
workstations, notebook PCs and PC monitors, replacing the aging VGA analog 
standard and providing guidelines to ensure compatibility with today?s DVI 
standard. Further, as planned, the UDI specification will be fully 
compatible with HDMI (High-Definition Multimedia Interface), the standard 
digital interface for High Definition TVs (HDTVs) and advanced CE 
UDI will be able to use High-bandwidth Digital Content Protection (HDCP) 
technology widely deployed in HDMI-compatible products today. As a result, 
host platforms with UDI connectors will be able to plug into monitors and 
HDMI-equipped display devices including HDTVs with full content-use rights 
management and high-definition video compatibility. 
For end users, UDI will provide a universal video connection from the 
computer host to the display, including PC and notebook monitors, HDTVs 
and projectors. For PC and monitor makers, UDI is intended to enable easy 
integration with both discrete and integrated graphics controllers, 
letting OEMs build computer platforms and all-digital LCD monitors that 
are lower in cost, easier to use and higher in bandwidth.
A Special Interest Group (SIG) of industry leaders has been formed to 
develop and continue revising the UDI specification. Principal members of 
the SIG include Apple, Intel Corp., LG Electronics, National Semiconductor 
Corp., Samsung Electronics and Silicon Image Inc. Joining the SIG as 
contributors are graphics chip maker NVIDIA Corp., semiconductor 
manufacturer THine Electronics Inc., and cable and connector makers FCI, 
Foxconn Electronics Inc. and JAE Electronics Inc.
UDI SIG members are seeking more industry participants to help validate 
and refine the display interface specification, which is currently in 
revision 0.8. The UDI SIG expects to have the specification completed 
(version 1.0) in the second quarter of 2006. 
Interoperable Connection to HDMI Devices
The governing body for HDMI, the HDMI Founders, supports the goal of 
keeping HDMI and UDI aligned for long-term compatibility. Because the two 
specifications share many elements, semiconductor and component makers 
will have the flexibility to design products supporting both HDMI and UDI 
for little extra cost.
?The HDMI Founders support the development of PC products that are 
compatible with HDMI,? said Les Chard, President of HDMI Licensing LLC. 
?We are cooperating with the UDI Promoters to ensure compatibility between 
HDMI and UDI devices in the CE and PC industries.?
UDI is one of three platforms (including DVI and HDMI) enabled to use 
High-bandwidth Digital Content Protection (HDCP), which is the most 
widely-deployed content protection technology for displaying premium 
high-definition content and is supported by major motion picture studios. 
This will allow UDI-compatible PCs, notebooks and workstations the ability 
to display the latest digital content in various high-definition modes, 
including those meeting new high-definition optical disc standards.
?We welcome this new secure digital interface with even higher image 
quality. Technologies like HDCP allow exciting new consumer opportunities 
by assuring that a diverse range of choices can be offered. We support the 
UDI specification initiative,? said Chris Cookson, President, Warner Bros. 
Technical Operations Inc. and Chief Technology Officer, Warner Bros. 
?Next-generation content will drive new and exciting consumer experiences, 
and UDI can reduce the technical complexity associated with this shift,? 
said Eric Schmidt, group product manager of Windows Digital Media at 
Microsoft Corp. ?With HDMI compatibility, UDI gives Windows-based PCs the 
flexibility to be used in commercial or consumer applications by 
interfacing with both PC and TV displays. We plan to support UDI in our 
operating system platforms.?
UDI offers a number of performance and cost improvements over existing 
display standards. It also will maintain backward compatibility with DVI 
displays to pave the way toward completely replacing analog VGA as the PC 
display interface. These improvements include the added flexibility of 
accommodating proven high-bandwidth technology based on PCI Express and 
HDMI?s Transition Minimized Differential Signaling (TMDS); use of a small, 
lower cost connector with optional locking retention; and, ongoing 
oversight of a working group that will actively administer and revise the 
UDI specification to meet changing market needs.
The UDI SIG is consistent with other standard PC industry initiatives with 
all adopters agreeing to license their essential IP on reasonable and 
non-discriminatory terms.  In addition, core protocol and interface IP 
(TMDS) is available on a reciprocal, royalty-free basis.
About the UDI Special Interest Group
For more information on UDI or to join the UDI Special Interest Group, 
please visit www.udisigwebsite.com
Media contacts
Intel Corporation
Bill Kircos
Judy Pae
LG Electronics
+822 3777 7144
John Lucas
Samsung Electronics
Paul Sherer
Silicon Image 
Ogilvy Public Relations Worldwide
Gayle L. Bullock
National Semiconductor

Media Contacts:
Paul Sherer
Vice President
Ogilvy Public Relations Worldwide
P: (415) 677-2715

Kasey Holman
Public Relations
Silicon Image, Inc.
P: (408) 616-4192

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