Understanding the HDTV TV Tuner

Owning an HDTV TV tuner will be a necessity in the future as everyone will have one and will be viewing television on an HDTV set. These days, you are going to hear about this technology in almost everything you hear or read that is related to electronic gadgets. If you are confused about what all this talk is about, then you should first of all realize that the letters are an abbreviation for High Definition Television, the latest advancement in digital broadcasting. This format has a much higher image resolution which allows for more true-to-life images; it also allows you to hear things better as well.

High definition tuners receive packets that are digitally encoded with MPEG 2 that are either transmitted through the air or cable broadcasts. The HDTV TV tuner software will then receive these packets. The downside is that you completely lose the data if the packets come in out of order. This means that a high def tuner is an "all or nothing" type of technology that is fundamentally different from analog. With analog technology, a weak signal is still captured and displayed on the TV screen, even if it appears fuzzy.

There are two important things to look for in your high definition tuner: it should be able to get cable QAM and it should also allow for utilization with a PC processor. It is also important to make sure you know how weak or multi-path signals are dealt with. Another important factor to be considered when choosing your HD tuner is the cost.

Signals which are obstructed and reflected by objects like trees and buildings are known as multi-path signals. In these circumstances, you will receive a ghosted picture if you have an analog signal. The data received by the HD tuner, however, will simply be unavailable due to the interception of the multi-path signals. You will wind up with jerky and flickering images as a result since you lose packets this way.

An above average HDTV TV tuner will always lock onto strong signals and disregard those that are multi-path. Living where there are many obstacles means you will have many multi-path signals. If this is the case, it will be necessary to choose an HDTV tuner with stronger multi-path filtering abilities.

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