[opendtv] Re: Motorola Introduces First All-Digital Set-Top Family With Built-In Home Media Networking Capabilities

  • From: Jeroen Stessen <jeroen.stessen@xxxxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Thu, 5 Jan 2006 12:37:17 +0100


Richard Hollandsworth wrote: 
> Is there any current HDTV that isn't backward compatible with 24-bit DVI 
interface via HDMI 
> (Type A) interface....and NO MORE???? Hence, they don't implement double 
data rate HDMI 
> (Type B) that is required for 30/36-bit color pallet.

Not true... because of YCbCr 4:2:2 sub-sampling, 12-bits YCbCr costs 
as much bitrate as 8-bits RGB 4:4:4. And then 165 MHz pixel clock is 
still enough for 1080p resolution, so a single link will do. 

Note that ATI are saying that all their X1000 (1300, 1600, 1800) cards 
have dual-link DVI output, and full 10-bits processing in the output 
path, and that they can actually connect to a 10-bits (or more) digital 
display. This is the first good application of dual-link that I have 
heard of. But you need this only for RGB, not for YCbCr. 

-- 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/ 

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