[mythtv-users] Re: Resolution, screen size, and other related
'size' question
Michael T. Dean
mtdean at thirdcontact.com
Mon May 23 14:28:31 UTC 2005
Chad wrote:
>That is extremely odd that VGA does a DAC first, and then the monitor
>has to do the ADC back, it would seem intelligent to have changed this
>WAAYYY back in the 'day' not wait until LCD's come out that require
>the DVI input (probably the "fix" I'm referring to).
>
>
Only a digital monitor has to do an ADC back. A CRT uses the analog
signal. LCD monitors and digital TV's generally have to do the
ADC--unless given a digital input. Therefore, while we were using
CRT's, there was no reason to send the monitor a digital signal (since,
if we did, the monitor would have to do the DAC). Really, it was not
until LCD monitors that we had a digital display technology (at least
one in common use) that required a digital signal.
Mike
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