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Adopted as new broadcast format in United States, Digital TV is widely accepted by various nations across the globe. Digital TV uses an advanced broadcasting technology that replaces analog over-the-air broadcasting. Digital broadcasting not only allows stations to offer improved picture and sound quality but also other advantages over analog broadcasting. Digital TVs can broadly be categorized in two types; Standard Definition Digital Television (SD DTV) and High Definition Digital Television (HD DTV) - Standard Definition Digital Television: This the lower form of digital TV. With an aspect ratio of 4:3, it has square-like appearance. Standard definition (SD) television displays either a stretched picture or a picture with black bars on the side of the screen.
- High Definition Digital Television: This is the highest form of digital TV that comes with an aspect ratio of 16:9. It has a rectangular like a movie theater screen that displays images with black bars on the top and bottom of the screen.
To subscribe to digital cable TV network, you don't need a TV aerial; instead a set top box and a cable phone line are provided by the TV Company. Digital cable for TV signals are received via the fiber optic cable network of a digital cable TV provider and decoded at the customer's end via a set top box. To receive digital cable TV signals, you must live in an area where a cable network is available. Digital cable not only offers clear picture but also enhanced sound on a wide array of television and commercial-free music channels. The cables used to transmit digital TV services signals can also be used for phone services. So, you may check with the digital cable TV providers about the phone services offered with the digital cable TV connections. There are many advantages of digital cable service including the parental control you can access and manage through your digital remote control. Some of the key features of digital cable TV are: - TV email
- Pay Per View
- Electronic Programming Guide
- Digital Tele text
- Interactive services and games TV is an advanced broadcasting
- Digital radio channels
- Broadband access (optional)
- Some specialist regional programs
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