High Definition TV: an overview
High definition TV is a general term used to describe televisions and related equipment that is capable of producing higher quality pictures and sound than previously available with traditional TVs, DVD and video players.
In Britain, in common with many other countries, there are minimum standards that TVs, Blu-ray player, video projector, hi-fis and other products, plus broadcasters and manufacturers who produce content, must adhere to in order to be called “high definition”.
High Definition Quality
There are several different quality levels of high definition video, typically labelled with a number and letter combination. The common formats available are 720p, 1080i and 1080p. The number refers to the vertical resolution of the picture, with a higher number representing the potential for a better quality picture. The letter refers to ‘interlaced’ or ‘progressive’, with most people agreeing that progressive displays provide a better picture.
Contrast this with the UK’s traditional TV system, which is 576i, or North America’s, which is 480i.
High Definition Content
Simply owning a high definition TV does not mean that you can automatically watch high definition TV. Although some TVs will now “upscale” standard TV (that is, a processor inside the TV attempts to improve the quality of normal TV programmes), you need to have access to high definition content via satellite, Freeview HD, the Internet, or via a Blu-ray disc player to get the true high-def experience.
High Definition Costs
It generally costs more to watch high definition content than standard TV.
Firstly, you often need more expensive equipment in order to receive and view high definition programmes and discs.
Secondly, you may need to pay a monthly subscription in order to receive high definition channels from various broadcasters. Even if you currently pay for a satellite service, there is likely to be a premium for HD content.
High Definition Viewing Options
This website will help you through the maze of different options available to you in order to watch high definition programmes and other content. You can reach it all via the menu on the left.
In general, you will need to decide:
- what type of high definition TV you require (such as LCD or plasma), or if you prefer a video projector
- what kind of Blu-ray player to buy
- whether you want to upgrade your home audio / hi-fi system
- which broadcast system you want (Sky, Freeview HD, Freesat) and whether you want to pay an ongoing subscription
- if you want to download and view content from the Internet
High Definition Filming
With the advent of high definition TV comes the ability for anyone to shoot their own film in HD.
The number of high-definition ready camcorders and cameras is increasing rapidly, from pocket-sized units to more traditional camcorders.
This web site will help you choose from the options available.