High Definition free to view digital tv lets you enjoy crystal clear pictures on a large screen – accompanied by high quality sound – in the comport of your home. It’s a powerful viewing experience that provided a new level of enjoyment only available on free to view digital tv. Free to view digital tv pictures can be delivered in either Standard Definition (SD) or High Definition (HD) format. SD broadcasts provide widescreen pictures with DVD equivalent picture quality. HD broadcasts offers the highest available picture quality. For the viewer, this means crystal clear pictures with up to three times the horizontal and up to twice the vertical resolution of SD on some programming. This creates an amazingly detailed, lifelike image that approaches film quality, with clear, sharp edges, realistic colours and greater depth of vision.
You’ll need an HD screen to show the improved picture quality, with the benefits most noticeable on larger screens – whether CRT, rear projection, plasma, LCD or home theatre projector. A HD screen will be in a widescreen shape, have an HD input and display pictures at a resolution of 576p or better. "True HD" has a resolution of 1080 lines or 1920 x 1080 (the number of horizontal pixels and the number of vertical pixels). 1920 x 1080 is currently the highest picture quality available.
How do I receive free to view High Definition tv?
To receive and watch free to view High Definition tv you either need a television screen with built-in HD digital tv reception capabilities or an HD set top box connected to an HD screen. All HD integrated televisions and HD set-top boxes can receive both HD and SD broadcasts, and Dolby Digital audio with HD broadcasts.
HD broadcasts provide high quality sound without the distortions found in analog TV.
HD programs can be broadcast with Dolby Digital 2/0 stereo or MPEG audio. Some broadcasters enhance programs with multi-channel audio, including Dolby Pro Logic or Dolby Surround. Some broadcasters also provide Dolby Digital 5.1 sound dependent upon availability of the soundtrack.
Connecting leads between an HD set top box and screen
Currently, HD set top boxes are commonly connected to an HD screen by either a digital HDMI cable or analogue such as Component (YpbPr) or RGB. The resolution and picture quality may be affected by the cable type and length. Special HDMI cables can transmit a HD signal up to 20m without substantial signal loss, however these cables can be expensive. For the fore mentioned reasons it's best to keep you cable lengths to a minimum, i.e. under 10 metres.
A high quality cable will be able to handle the wider digital or analogue bandwidth required for HD (typically up to 30MHz), cheaper cables do not have sufficient screening for interference and the picture quality will suffer as a result. The introduction of digital video connectors (DVI and HDMI) provide improved picture quality over analog connectors – similar to the difference between analog audio and digital audio connectors.
Can I connect a HD digital set top box to an analogue TV?
One of the most common misconceptions is that you need a true high definition TV to watch a HD TV channel. This is not necessarily the case. Many HD set top boxes these days offer "down converted" picture resolution of the HD TV signal, which enables anyone with a older analogue TV to watch these HD channels. We use Nextwave 6290 digital set top boxes which have this down conversion feature, whilst also allowing the sound to still be sent in HD to your amplifier i.e. 5.1 surround sound.
Thanks to Digital Broadcasting Australia for providing parts of this explanation. Unfortunately their website is no longer available for viewing.
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