What is HDTV?
High-Definition Television (HDTV) is a type of Digital Television (DTV) that receives and/or displays high-definition images and typically Dolby® Digital 5.1 Channel surround sound. HDTV programming and HDTVs together provide an image that is five-times sharper than a standard TV due to the increased number of pixels contained in the received signal. HDTV screens are wider than the traditional analog TV screens. Analog TVs offer a screen aspect ratio of 4:3 while HDTVs offer an aspect ratio of 16:9, which is similar to a movie screen. This allows you to see movies as they were filmed without reformatting. There are also HDTV-capable sets that have the regular TV 4:3 ratio but format HD content in a letterbox presentation (with black bars on the top and bottom of the TV image). Enhanced–Definition Televisions (EDTV) also exist. These 4:3 aspect ratio TVs cannot receive HD-formatted signals. They can receive enhanced-definition signals, which do not have the detail of an HD signal but do
A High Definition Television (HDTV) is a type of Digital Television (DTV) that receives and/or displays high definition television images and surround sound. HDTV programming and TVs together provide a detailed, sharper image due to the increased number of pixels contained in the received digital. HDTV screens are wider than the traditional analog TV screens. Analog TVs offer a screen aspect ratio of 4:3 while HDTVs offer an aspect ratio of 16:9, which is similar to a movie screen. This allows you to see movies as they were filmed without reformatting. There are also HDTV capable sets that have the regular TV 4:3 ratio, but format HD content in a letterbox presentation (with black bars on the top and bottom of the TV image). Enhanced Definition Televisions (EDTV) also exists. These 4:3 aspect ratio TVs can not receive HD formatted signals. They can receive enhanced definition signals, which do not have the detail of an HD signal, but do improve on the standard definition (SD) picture.
HDTV stands for high-definition television, and it marks the biggest leap forward for television since color TV made its debut in the 1950s. HDTV images are more than twice as detailed as standard analog TV, delivering rich, realistic images, as well as multichannel, movie-theater-quality surround sound. HDTVs can display both regular and HDTV images, but they need HD sources to look their best.
HDTV is an acronym for High Definition Television. HDTV was first introduced in the early 1980’s in Japan. It was known there as the MUSE system, which was an analog HDTV storage and delivery system. MUSE had great picture quality but required immense amounts of bandwidth for storage and broadcasting, so it never really caught on. HDTV is now possible because of digital encoding which allows compression of the signal to make it easier to store and transmit. Digitally encoding a television picture is known as DTV, or Digital Television. A signal that is DTV is not necessarily HDTV – think of small dish systems and the digital channels on the 4DTV system. However, all HDTV signals are DTV – or digital. There is one addition acronym the consumer needs to know, that is EDTV or Extended Definition Television. EDTV is a digital television picture that is a little better than the current NTSC (National Television Standards Committee – the formal name of the system we all currently watch) but
HDTV stands for high definition television, a new means of broadcasting and the machines that take advantage of it. HDTV broadcasts video digitally, in contrast to the common analog formats PAL, NTSC, and SECAM. HDTVs first became available in 1998. Since then, television manufacturers have been doing as much as they can to encourage their customers to buy an HDTV for their next television. HDTVs require an HDTV tuner to pick up high definition programming. These typically run about 150 US dollars (USD) and are compatible with any HDTV. Some HDTVs come with built-in tuners. HDTV is defined as having 1080 active pixel lines and a screen with a length-to-height ratio of 16:9. This screen shape departs from decades of the conventional ratio of 4:3. The new ratio lends itself better to widescreen movies. HDTV resolution is about twice as high as typical CRT sets, which have 480 active pixel lines instead of 1080. The increase in resolution is just one of the benefits of HDTV. Because the i
