What is digital television?
Digital television (DTV) is a huge leap forward in the television technology compared to analog television that has been widely available since the 1940s. DTV is delivered and displayed using digital encoding similar to the way a PC operates. By using digital technology, there is no variation in picture and sound quality from the origination point until it is displayed on your television. You always receive a high-quality picture without the wavy lines or static you might sometimes get from a weak analog signal. Some service providers offer on-screen channel information, and other various guide data. Another feature of digital television is digital surround using Dolby™ Digital technology, which is the same technology used to produce the sound you hear in movie theaters.
Digital technology provides a more efficient way to deliver television than with analogue transmissions. It enables the same services to be delivered in less space with greater clarity. The freed bandwidth that digital brings can be used for other services and in the context of digital TV this can be more television and radio channels plus enhanced or interactive service The word ‘digital’ is used by a wide variety of industries to indicate the use of new technologies. In the case of television, digital relates to the way the programmes are processed and transmitted. Computer technology is used to convert sound and pictures into a digital format and to compress them, using as few bits as possible to convey the information on a digital signal. This technique enables several television channels to be carried in the space used by the current analogue signals to carry one channel. The digital signal can be received by standard aerials, satellite dishes or cable but have to be decoded and t
Digital television (DTV) is a broadcast TV signal transmitted as a series of binary numbers — ones and zeros. Digital signals allow greatly increased quality and the ability to send additional information. This new technology is capable of transmitting a limited number of High Definition Television (HDTV) programs or multiple Standard Definition Television (SDTV) programs.
Digital television (DTV) is a more efficient and higher quality broadcast technology. DTV takes up less space in the air, or spectrum, allowing stations to send multiple channels of programming. Additionally, it opens extra spectrum for use by public safety officers and emergency responders (police, fire, medical).
Digital television is a replacement technology for existing free-to-air analog services. It provides better picture quality and reception, plus a variety of new features that enhance the viewing experience. The digital television industry in Australia is using the DVB standard, first developed in Europe, rather than the American-developed ATSC standard. DVB is proving to be a very high quality system and is being used in many countries around the world. In Australia it will replace the analog PAL system.
