Q. HDTV.
A. Here is where things may start to get confusing for the consumer. All HDTV is digital, but not all Digital TV is HDTV. As stated previously, in the answer to question #1, the same bandwidth for digital TV broadcasting can either used to supply a video signal (or several) and other services, or can be used to transmit a single HDTV signal.
Although there are technically 18 different standards for digital TV broadcasting (all Digital TV tuners are required to decode all 18 standards), the practical application of DTV has come down to 3 standards. These standards are: 480p, 720p, and 1080i.
480p
If you have a progressive scan DVD player and TV, you are familiar with 480p (480 lines of resolution, scanned progressively). 480p is similar to the same resolution of standard broadcast TV (and is referred to as SDTV or Standard Definition Television), but the image is scanned progressively, rather than in alternate fields. 480p does provide an excellent picture (especially on smaller 20-27" screens). It is much more film-like than standard cable or even standard DVD output, but it only provides half the potential video quality of an HDTV picture, therefore its effectiveness is lost on larger screen sets. Although 480p is part of the approved DTV broadcasting scheme, it is not HDTV. This standard was included as one of the DTV broadcasting standards to provide broadcasters the option of providing multiple channels of programming in the same bandwidth as a single HDTV signal. In other words, 480p is just more of what we already have with only a slight increase in image quality.
720p
720p (720 lines of resolution scanned progressively) is also a digital TV format, but it is also considered as one of the HDTV standards. As such, ABC and FOX use 720p as their HDTV broadcasting standard. Not only does 720p provide a very smooth, film-like image due to its progressive scan formula, but image detail is at least 30% sharper than 480p. As a result, 720p provides an acceptable image upgrade that is visible on both medium (32"- 37") size screens as well as larger screen sets. Also, even though 720p is considered high-definition, it takes up less bandwidth than 1080i, which is covered next.
1080i
1080i (1,080 lines of resolution scanned in alternate fields consisting of 540 lines each) is the most commonly used HDTV format, and has been adopted by PBS, NBC, CBS, and CW (as well as satellite programmers HDNet, TNT, Showtime, HBO, and other pay services) as their HDTV broadcast standard. Although there is still a debate as to whether it is that much better than 720p in the actual perception of the viewer, technically, 1080i provides the most detailed image of all the 18 approved DTV broadcast standards. On the one hand the visual impact of 1080i is lost on smaller screen sets (below 32").
Although there are technically 18 different standards for digital TV broadcasting (all Digital TV tuners are required to decode all 18 standards), the practical application of DTV has come down to 3 standards. These standards are: 480p, 720p, and 1080i.
480p
If you have a progressive scan DVD player and TV, you are familiar with 480p (480 lines of resolution, scanned progressively). 480p is similar to the same resolution of standard broadcast TV (and is referred to as SDTV or Standard Definition Television), but the image is scanned progressively, rather than in alternate fields. 480p does provide an excellent picture (especially on smaller 20-27" screens). It is much more film-like than standard cable or even standard DVD output, but it only provides half the potential video quality of an HDTV picture, therefore its effectiveness is lost on larger screen sets. Although 480p is part of the approved DTV broadcasting scheme, it is not HDTV. This standard was included as one of the DTV broadcasting standards to provide broadcasters the option of providing multiple channels of programming in the same bandwidth as a single HDTV signal. In other words, 480p is just more of what we already have with only a slight increase in image quality.
720p
720p (720 lines of resolution scanned progressively) is also a digital TV format, but it is also considered as one of the HDTV standards. As such, ABC and FOX use 720p as their HDTV broadcasting standard. Not only does 720p provide a very smooth, film-like image due to its progressive scan formula, but image detail is at least 30% sharper than 480p. As a result, 720p provides an acceptable image upgrade that is visible on both medium (32"- 37") size screens as well as larger screen sets. Also, even though 720p is considered high-definition, it takes up less bandwidth than 1080i, which is covered next.
1080i
1080i (1,080 lines of resolution scanned in alternate fields consisting of 540 lines each) is the most commonly used HDTV format, and has been adopted by PBS, NBC, CBS, and CW (as well as satellite programmers HDNet, TNT, Showtime, HBO, and other pay services) as their HDTV broadcast standard. Although there is still a debate as to whether it is that much better than 720p in the actual perception of the viewer, technically, 1080i provides the most detailed image of all the 18 approved DTV broadcast standards. On the one hand the visual impact of 1080i is lost on smaller screen sets (below 32").
Will a HDMI cable make a difference in the clarity on my HDTV from my computer?
Q. Please bear with me as this is my first Yahoo Answers question. I have a 26 inch, 720P, Dynex HDTV that I use as my computer monitor. I am currently using a VGA cable. I Installed a new video card(ATI Radeon HD 4550, 1GB GDDR3) and I noticed that it had HDMI output. My question is, will a HDMI cable make the picture quality better?
A. To bad you did not ask this question later. I am running a 37" 1080p Sanyo off a desktop I built. I have been using a VGA cable. Just ordered a DVI to HDMI and an HDMI cable, I have both on my 5770, to check it out. They came yesterday and will play with them this weekend. I read a response to a question like yours on this site a while back. It said he too ran with the VGA for the longest time and finally got off his butt and hooked up to his monitor with a digital cable. He said it improved so much that he was sorry he did not do it sooner. I will find out soon enough. Hope this helps. Good Luck.
How can I connect my computer to my Vizio HDTV through an S-Cable to use the TV as another computer screen?
Q. I have a 37 inch Vizio HDTV and an S-cable. I've connected the computer to the TV via S-cable but there are no S-video inputs on the TV menu. I have component 1 component 2, HDMI 1 and 2, AV 1 and 2 but nothing for S-video. Can someone please help?
A. Hi there,
It is logical to think that if your TV has got S-video then there has to be an input for it. Otherwise why would it has S-video. On your remote, use the input or source button. Remember you must connect the audio as well, L and R should be right beside the S-video connection.
Now, play the audio video on your computer and press the input button until the video appears on your TV. It should all be in your TV's manual, you can't go wrong with the manual.
If you really have trouble with the S-video, you can get an adapter for S-video to composite. Remember composite carries black and white signal along with other 3 colours. S-video carries the black and white separately giving you a superior video. So please try these.
Good luck!
It is logical to think that if your TV has got S-video then there has to be an input for it. Otherwise why would it has S-video. On your remote, use the input or source button. Remember you must connect the audio as well, L and R should be right beside the S-video connection.
Now, play the audio video on your computer and press the input button until the video appears on your TV. It should all be in your TV's manual, you can't go wrong with the manual.
If you really have trouble with the S-video, you can get an adapter for S-video to composite. Remember composite carries black and white signal along with other 3 colours. S-video carries the black and white separately giving you a superior video. So please try these.
Good luck!
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