lcd monitor manufacturer recommendation request

Oliver Fromme olli at lurza.secnetix.de
Mon Nov 23 16:42:29 UTC 2009


Brett Glass <brett at lariat.net> wrote:
 > Unfortunately, some monitors with digital interfaces are not 
 > compatible with some LCD displays, even though the sockets and 
 > cables look like they match up. For example, I recently tried to 
 > hook an Asus "Eee Box", which has an HDMI connector, up to a 
 > Samsung LCD display using a digital cable. Couldn't get it to work 
 > at all, no matter how I adjusted the settings on both. But when I 
 > used an analog adapter and cable, it worked on the first try at 
 > maximum resolution, with (fortunately) few or no noticeable 
 > artifacts. Analog isn't ideal, but it's a good fallback.

This is just a guess, because I haven't used the HDMI
connector on an Eee Box yet, but it sounds like you
have a problem with encryption.

HDMI signals support encryption (for DRM), so you have
end-to-end protection when you play protected media.
The signal is decrypted by the display, so there is no
way someone can make a digital copy of the protected
content.

However, DVI does not support encryption, so HDMI-to-DVI
cables only work for non-encrypted signals.  Also, some
computer monitors that have a HDMI connector do not
support encryption.

When you switch to an analog output, then encryption is
not used, so the problem goes away.  Encryption is only
defined for digital HD signals.

Best regards
   Oliver

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Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M.
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