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Who decides the resoultion?

Cyborger
04-21-2010, 12:25 PM
The cable company or the network itself? If it's the network, why is it that cable and satellite fight over who has the best looking picture? If it's the cable company, why do they lie and say they have 1080i when my TV tells me it's only 720p? And does the HDTV not have any part in this? I'm really confused about all of this HD stuff. My provider is Cox btw.

jkkyler
04-21-2010, 12:36 PM
The cable company or the network itself? If it's the network, why is it that cable and satellite fight over who has the best looking picture? If it's the cable company, why do they lie and say they have 1080i when my TV tells me it's only 720p? And does the HDTV not have any part in this? I'm really confused about all of this HD stuff. My provider is Cox btw.

The 'native' resolution is intrinsic to your display and does not change, meaning if you have a 720p set, the end result on your display is always 720p. Same thing for a 1080 set, the end resolution is always 1080 and does'nt change.

There are two resolutions to HDTV 720 & 1080 as well as 480 standard def. Each network or station is responsible for determining their resolution. ABC/ESPN & Fox have chosen 720p as opposed to 1080i believing that for fast motion and sports that the progressive scan is more fluid for moving objects. Virtually everybody else uses 1080i.

Regardless of what input is received your disply/tv then scales the picture as needed to it's native resolution as stated above. Meaning 720p signals are upconverted for a 1080 set and 1080 signals are downconverted for a 720p set. Where it can become confusing is with a set top box because many can be set to scale internally before the signal reaches your tv (which is found in the resolutin settings of yur STB) or set to 'pass along' the signal unscaled to your tv to let it do the scaling.

The reason companies fight and make claims about the quality of their picture is because virtually all of them use a compressed signal to save bandwidth. It is the accuracy of compressing the signal for transmission then decompressing it that is the basis of these claims, some companies do a better job of this than others who suffer artifacts and reduction of quality in this process.

ckone180
04-21-2010, 01:13 PM
Exactly, but satellite doesn't have the bandwith issue that cable providers do, IIRC. Therefore satellite has the ability to pass 1080p where cable would limit themselves. On the other hand, U-Verse and Fios have limited bandwidth but send only the channels currently being watched at a time. Cable has all channels being sent all the time. With several hundred channels, that equals a bunch of data on a single line. Therefore they compress the data quite a bit more typically than other options. Still all are pretty good and working to improve.

deadhead68
04-21-2010, 01:42 PM
The cable company or the network itself? If it's the network, why is it that cable and satellite fight over who has the best looking picture? If it's the cable company, why do they lie and say they have 1080i when my TV tells me it's only 720p? And does the HDTV not have any part in this? I'm really confused about all of this HD stuff. My provider is Cox btw.

It all depends on how you have your STB setup. Do you have it set to 720p? If you do, then that is what your TV is going to be telling you it is receiving. If you set the STB to 1080i, then that is what your TV will tell you it's receiving. If you set the STB to pass-through, your TV will tell you what that actual broadcast is, either 720p or 1080i. The only networks I know of that broadcast 720p are

ABC
The ESPN family of Channels
Fox

GymBrat98
04-21-2010, 05:35 PM
It all depends on how you have your STB setup. Do you have it set to 720p? If you do, then that is what your TV is going to be telling you it is receiving. If you set the STB to 1080i, then that is what your TV will tell you it's receiving. If you set the STB to pass-through, your TV will tell you what that actual broadcast is, either 720p or 1080i. The only networks I know of that broadcast 720p are

ABC
The ESPN family of Channels
Fox


Hi Dead:hithere:


http://i293.photobucket.com/albums/mm49/LIovemykittez/My%20Posterz/AnimatedBrat.gif

Sooner Al
04-22-2010, 05:43 AM
The cable company or the network itself? If it's the network, why is it that cable and satellite fight over who has the best looking picture? If it's the cable company, why do they lie and say they have 1080i when my TV tells me it's only 720p? And does the HDTV not have any part in this? I'm really confused about all of this HD stuff. My provider is Cox btw.

I suggest you work through the Advanced Setup Instructions beginning on page 9 then going on to page 12 of this guide.

http://www.cisco.com/web/consumer/support/userguides2/4003114.pdf

Select the resolutions you want to view on your HDTV. After you do this go into the settings in the set top box by pressing the Settings button twice. Setup the set top box for Pass Through or Auto DVI/HDMI depending on how you have your HDTV connected to the Cox supplied set top box. See page 14 of the same guide above.

For example I have my set top box setup to pass through 1080i, 720p, 480p widescreen and 480p to my HDTV. In my case I currently have a Cox supplied SA 8300HDC set top box connected to my HDTV via component cables, ie. three video and two audio cables.

Other Cisco/SA manuals for SA set top boxes...

http://www.cisco.com/web/consumer/support/prod_tv_set_tops.html