Difference Between TV and HDTV
High Definition Television, or HDTV, is the current trend of all TV sets on the market today. An HDTV set simply means that it is able to display images that have a much higher resolution, when compared to standard TV. DTV stands for Digital Television, and though they often go together with HDTV, they are totally independent technologies, that can be used in tandem or independently. Digital Television covers the digital transmission of moving images and sound, and is the successor to the current analog TV, that is widely in use today.
The common misconception that people make with HDTV and DTV, is that you only need to buy an HDTV set to get high definition video. An HDTV set can process DTV signals, but to maintain backwards compatibility with older systems, it also accepts analog signals. Even if you have an HDTV, but you are still receiving analog TV signals, then you still have standard definition. Although HD is feasible on an analog transmission system, the huge bandwidth requirement spelled its early demise, and all HD videos nowadays are on DTV.
Another common misconception is that having DTV and an HDTV set would directly imply that you are seeing an HD video on your screen. This is also quite false, as there are other factors that need to be considered in order to get HD video. First-off, the video source from the broadcasting company needs to be in HD, as you cannot have HD output without HD input. It is quite easy to know if you have HD video, as most companies are very eager to flaunt their ability to broadcast in HD. The next key factor is the transmission of the video signals from the broadcasting company to your TV set. Even if you have an HDTV receiving DTV signals from a station that broadcasts in HD, you could still be getting an SD signal if the cable company is carrying the signal in SD.
In order to get a high definition picture, you must satisfy all these requirements. At the heart of all this, is the DTV transmission system, as it makes the transmission of HDTV signals possible.
1. DTV is the digital transmission of video and audio, while HDTV is a type of TV set that has a much higher resolution.
2. HDTV sets do not always imply the presence of a DTV transmission system.
3. A DTV transmission system does not always mean that there is HDTV resolution.
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