OT: Composite/Component [was Re: [mythtv-users] Re: Image quality,
what effects it?]
mythtv at edsons.demon.nl
Sat Aug 14 16:43:18 EDT 2004
Cory Papenfuss wrote:
> I suspect that terrestrial cable will use encrypted QAM with cablecard
> anyway, so getting uncrypted QAM support is probably moot.
No such thing exists...
terrestrial == over the air, which is in USA by ATSC 8-VSB, in normal
thinking countries by DVB-T.
cable == by RF cable managed by a Cable Operator (Fox, UGC, ... )
P.S. ATSC is much later than DVB, and very much exists because the USA
wanted to define its own standard, even though both Cable as well as
Satellite in the USA were already very succesfully deploying DVB....
The argument that ATSC supports HD and DVB does not is not valid. DVB
supports any level, and HD is simply HL at HP. ATSC simply mandates a
number of resolutions. And fixing that particular table happened to be
quit a fight.
P.P.S. DVB supports what is historically called FTA or Free To Air
signals. Many Satellite signals are not encrypted. On cable the
situation is very much defined by the operator, and strongly dependent
on the business model.
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