JediFonger
Senior HTF Member
- Joined
- Feb 2, 2006
- Messages
- 4,241
- Real Name
- YiFeng You
steve,
over the air (atsc) channels can be delivered either through the antenna to the TV with HDTV tuner (since the built-in tuner decodes atsc) or through cable's set top box (STB) since the box helps either relay (if you use coaxial hookup between STB and HDTV) or decode the atsc for your (if you use DVI or component out).
a built in HDTV is the same as a separate HDTV tuner box that you purchase. it only decodes over the air (atsc) signals. for premium cable channels like HBO or Cinemax or Showtime HD you need a STB that decodes qam or some other standards plus a subscription obviously. that's why HDTV tuners can only tune atsc/over the air channels and not hbo or any other premium channels. it's not like the good ole days of cable classic. it's all digital now.
plus, a lot of STB offer special interactive features like ondemand, that's where one requires cable cards either built into the HDTV for viewing only (1.x) or on STB in the future HTPC's (2.x):
http://arstechnica.com/guides/other/cablecard.ars/1
over the air (atsc) channels can be delivered either through the antenna to the TV with HDTV tuner (since the built-in tuner decodes atsc) or through cable's set top box (STB) since the box helps either relay (if you use coaxial hookup between STB and HDTV) or decode the atsc for your (if you use DVI or component out).
a built in HDTV is the same as a separate HDTV tuner box that you purchase. it only decodes over the air (atsc) signals. for premium cable channels like HBO or Cinemax or Showtime HD you need a STB that decodes qam or some other standards plus a subscription obviously. that's why HDTV tuners can only tune atsc/over the air channels and not hbo or any other premium channels. it's not like the good ole days of cable classic. it's all digital now.
plus, a lot of STB offer special interactive features like ondemand, that's where one requires cable cards either built into the HDTV for viewing only (1.x) or on STB in the future HTPC's (2.x):
http://arstechnica.com/guides/other/cablecard.ars/1