Saturday, April 27, 2013

What should I be looking for when purchasing an hdtv?

Q. We are looking at buying our first HDTV for Christmas this year. What is the difference between plasma and LCD? 720 vs 1080? Also, what additional accessories are required (cables, etc). Do I need to have it installed professionally or can I do it myself? Thanks!

A. 1. Plasma vs. LCD: see the link below.

2. 720 vs 1080: 1080 indicates finer resolution, very desirable on screen sizes of 37 inches and up.

3. Nothing extra required. Connect a signal source (antenna, cable, or satellite), plug it in, and follow the directions.

4. You can do it. For large sets, get a helper to help lift it. My 46 inch Samsung LCD set is only about 50 pounds but very bulky.


How can I connect an HDTV, and Xbox, a Home Theater in a Box, and a HD Digital cable Box?
Q. I have an Olevia 37 LCD TV, a regular Xbox, an Emerson Home Theater, and a Motorola HD DVR cable Box. How can I connect them or where can I find a connection diagram, that tells me how. I have an HDMI cable, an A/V Component (for audio and video) and A/V Composite cables. I would like it that everything can run thru my home theater speakers. Note that the home theater is also a dvd player and has two composite in, one out, and only one components out.

A. the best way to do this is to run everything through the home theater receiver.

I have mine setup like this...

HD box - HDMI cable out to TV and optical cable out to stereo reciever so I can get the HD sound to play also.

PS2 and VCR run into stereo and then there a video out that connects to the TV. This way, the TV plays all devices on the same channel and I never have to remember how I hooked it up.

DVD uses optical cable into stereo for sound(never understood the naming for that) and regular RCAs into TV incase I don't want to do surround. Then the component (RGB) cables out to TV for video.

Doing it this way allows me to run everything through the reciever and easily add another device like if a friend brings over a vid cam or his xbox.


I have the vizio 50in HD Plasma and Yahama components...


What is the Difference Between Digital TV and HDTV?
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").





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