What is HD?
HD stands for high definition, which is an increased visual resolution or picture quality for videos. HD can apply to TV formats, video file formats, multimedia streaming formats, video recording format or optical disc format. A good analogy for this are high resolution images that look crisper visually than pixilated images, images that can retain a good visual even when it is enlarged versus a low resolution one.
One of the best examples of HD are HDTVs. HDTVs are different from the traditional analog TVs in its signal reception in that HDTVs make use of digital signals to transmit images versus an analog TV’s radio signal. HDTV has five times better resolution quality than standard TVs, at 1-2 million pixels per frame.
An HDTV needs three parts in order to work as intended: an HDTV station, a signal receiver such as an antenna, a cable or a satellite service and the HDTV itself. It is important to note that having all the hardware components alone will not automatically make all TV content look HD quality: if the signal that you are receiving is still in analog, then the image that will be transmitted is that of an analog and not high definition. However, if you play HD videos and DVDs in this unit, then you will get the full HD experience because the formats are compatible.