Archived from groups: alt.tv.tech.hdtv (
More info?)
mb wrote:
>
> My budget puts me squarely in the RP CRT crowd and I have my heart set
> on the Panasonic 53x54. My cable provider is Cox who offers an HD/DVR
> set top box with DVI out. The Panasonic has HDMI in. I understand
> there are adapters to make the connection, but my question is whether or
> not to spend $100+ on a DVI cable/HDMI adapter when it's being used for
> what I've read is essentially an analog device?
A HDTV is a Digital Processing Device that Processes the Digital
TV Signal in many ways... The Digital Processing 'guts' of a HDTV
can be better or worse than the Cable Box..... Among the HDTV
Brands, the Digital Processing guts can be all over the map....
Hint, I like Sony HDTV Processing 'guts'.... WEGA engine...
As for CRT HDTV displays..... Yes, this final Picture Display
stage is a 'Digital to Analog' final conversion done by the HDTV...
If you use Component Out from the Cable Box.... You have a
Double Digital to Analog Signal conversion Process.....
The HDTV Video must be reconverted to Digital for processing..
If you use DVI Video OR HDMI Video & Audio cable out of
the Cable Box does only the QAM conversion, the signal
out of the Cable box remains Digital, & the HDTV does
all the Digital Video Processing, & only the final
CRT video Display is converted to Analog by the HDTV....
This 2nd set is usually the way to go IF your HDTV
has the Good Processing 'Guts'.....
On the other hand, if
> that is indeed the case, why do manufacturers of RP CRT devices include
> a digital in interface at all? I suspect I'm way off base here in my
> thinking for lack of knowledge, so I welcome education on the subject.
> Thanks in advance.
The old SD TVs were pure Analog signals with Analog Processing &
Analog CRT Display...
The new HDTVs Have Digital processing of the Digital Signal, and
last step Analog processing for the CRT display...
Even with the Component Cable Analog signal in.. the HDTV requires
that Analog
signal to be converted back to Digital before the Digital
Processing
guts "kick in"... Those HDTV Guts separate the 'men from the
boys'...
>
> mb
>
> P.S. If anyone wants to comment on the Panasonic 53x54, I'd appreciate
> that as well. I looked at the Toshiba 46 & 51H units, but reads things
> about low level hum from the power transformer.