For the last few years, it seems everyone has been talking about High Definition TV and what it means to us.
Today, buying a new television is not as simple as in the past, when you shopped for brand and size. Now you need to know about technical factors such as display resolution, scanning system, display aspect ratio and screen type.
I’ve prepared this simple guide in response to the questions customers are asking about HDTV.
What is HDTV and how does it differ from SDTV?
HDTV is a digital television broadcasting system that delivers picture quality superior to traditional, standard-definition TV (SDTV).
HDTV offers a significant leap forward in viewing quality, with picture resolution up to 6 times sharper because it has more lines of resolution than SDTV. The gaps between scan lines are narrower or even invisible to the naked eye. The larger the TV on which you view the HD picture, the more improvement in picture quality.
It is important to note that an HD-compatible television requires an HD signal in order to deliver the advantages of its superior, more realistic viewing experience.
What do I need to know about display resolution and scanning systems?
High Definition usually refers to a minimum of 720 lines of video format resolution displayed in a horizontal fashion from top to bottom. In general, a higher display resolution will yield a clearer, sharper image. HDTV sets offer a choice of screen resolutions of 720p, 1080i and 1080p. The “p” indicates progressive scanning and “i” means interlaced scanning. Progressive is generally better, producing smoother video that stays sharper through fast-moving video. In comparison, SDTV delivers viewing content at just 480i.
Which display aspect ratio should I buy?
I’m happy to report that you do not need to be concerned about the display aspect ratio. That’s because all new television sets come in the 16×9 widescreen ratio, whereas older sets have a 4×3 ratio.
I hear people debating the advantages of each screen type. Which one is better?
Thin, large-screen television technology developed rapidly starting in the late 1990s. The three types competing for your consideration today are Plasma, LCD (Liquid Crystal Display) and LED (Liquid Emitting Display). Without getting into technical differences, all you need to know are the key benefits of each.
A Plasma screen generally offers better contrast, better “blacks” and color accuracy, plus a larger range of viewing angle, great for action (sports & video games) and works well in dark rooms.
An LCD screen uses less power, is preferable for use with computers, and does not have a propensity for screen “burn-in,” works well in bright rooms, wide range of screen sizes.
LED TVs work well in all lighting conditions, similar to plasma for color performance, some models have ultra slim depth.
Price, screen size and life of the set are about even between the three types.
Can you recommend which TV set I should buy?
If you have any specific questions, please give us a call.