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New HDTV: High Definition Television, Best Resolution, Antennas And Cable Card
By:
Published: November 14, 2007
High definition television, or HDTV, is known as a digital type of television broadcasting system that has a better resolution compared to conventional TV systems. Because HDTV is transmitted digitally to compatible TV sets, it may need a smaller bandwidth if the video is compressed. HDTV started out in France in 1949 as a 819-line high definition television network made available to the public, and it continued to operate until the early 1980s.
Almost a decade later, another early version was used by the U.S.S.R. as a military tool. Eleven years later, a Japanese television company created the first commercial system. However, it was only in the late 1990s that HDTV became a truly commercialized product.
HDTV can only be transmitted through a high definition signal. Aside from satellite TV, video game devices, and Blu-ray or HD DVD, a HDTV signal can come from these two sources -- antennas and a cable card.
The cable card is a small device that can be plugged in to allow buyers to access high definition channels and shows through a high definition set, PC or a digital camcorder. Since cable companies often allow their customers to access HDTV shows or broadcasts as part of a digital service, a cable card is usually included in the package. This digital option offers a better resolution because HDTV uses a higher pixel rate and field rate.
TV antennas are also good sources of HDTV signals. Broadcasting through the air is common practice among many networks. To transmit and receive HDTV signals through the air, antennas with an HD tuner are used. HD tuners can be separately purchased or rented but later versions of HDTV television sets already have built-in HD tuners.
HDTV can offer a better resolution compared to standard TV systems. Consumers can therefore expect clearer pictures or videos that are less fuzzy or blurry. The colors seen on TV sets that are compatible with HDTV signals are also richer and brighter, creating a more realistic effect. Moreover, fast-moving scenes can look more detailed when viewed through a television set that is compatible with a HDTV system. HDTV videos and photos use Dolby Digital as their sound system, so viewers can expect better sounds when using this technology.
However, as with all kinds of new technology, HDTV has certain weak points. Despite the fact that HDTV systems don't experience snowy patterns as a result of interfering signals, the videos can appear pixelated if the television device is not configured properly. Pixelation among HDTV systems can also occur if the video is excessively compressed. Expensive cable costs can also occur if consumers will be compelled to upgrade or modernize their TV sets so as to accommodate HDTV systems. Another possible disadvantage of using HDTV is the confusion it can cause, especially among consumers who are not familiar with the different formats. However, despite its limitations, HDTV is the new standard in TV technology.
Sources:
"High-definition Television." Wikipedia The Free Encyclopedia. 13 Nov. 2007. http://en.wikipedia.org/wiki/High-definition_telev ision.
Runion, Richard. "How To Select The Best HD TV To Buy." EzineArticles. 12 Nov. 2007. 13 Nov. 2007. http://ezinearticles.com/?How-To-Select-The-Best-H D-TV-To-Buy&id=828907.
"CableCARD." Wikipedia The Free Encyclopedia. 10 Sept. 2007. 13 Nov. 2007. http://en.wikipedia.org/wiki/CableCARD.
HDTV can only be transmitted through a high definition signal. Aside from satellite TV, video game devices, and Blu-ray or HD DVD, a HDTV signal can come from these two sources -- antennas and a cable card.
The cable card is a small device that can be plugged in to allow buyers to access high definition channels and shows through a high definition set, PC or a digital camcorder. Since cable companies often allow their customers to access HDTV shows or broadcasts as part of a digital service, a cable card is usually included in the package. This digital option offers a better resolution because HDTV uses a higher pixel rate and field rate.
TV antennas are also good sources of HDTV signals. Broadcasting through the air is common practice among many networks. To transmit and receive HDTV signals through the air, antennas with an HD tuner are used. HD tuners can be separately purchased or rented but later versions of HDTV television sets already have built-in HD tuners.
HDTV can offer a better resolution compared to standard TV systems. Consumers can therefore expect clearer pictures or videos that are less fuzzy or blurry. The colors seen on TV sets that are compatible with HDTV signals are also richer and brighter, creating a more realistic effect. Moreover, fast-moving scenes can look more detailed when viewed through a television set that is compatible with a HDTV system. HDTV videos and photos use Dolby Digital as their sound system, so viewers can expect better sounds when using this technology.
However, as with all kinds of new technology, HDTV has certain weak points. Despite the fact that HDTV systems don't experience snowy patterns as a result of interfering signals, the videos can appear pixelated if the television device is not configured properly. Pixelation among HDTV systems can also occur if the video is excessively compressed. Expensive cable costs can also occur if consumers will be compelled to upgrade or modernize their TV sets so as to accommodate HDTV systems. Another possible disadvantage of using HDTV is the confusion it can cause, especially among consumers who are not familiar with the different formats. However, despite its limitations, HDTV is the new standard in TV technology.
Sources:
"High-definition Television." Wikipedia The Free Encyclopedia. 13 Nov. 2007. http://en.wikipedia.org/wiki/High-definition_telev ision.
Runion, Richard. "How To Select The Best HD TV To Buy." EzineArticles. 12 Nov. 2007. 13 Nov. 2007. http://ezinearticles.com/?How-To-Select-The-Best-H D-TV-To-Buy&id=828907.
"CableCARD." Wikipedia The Free Encyclopedia. 10 Sept. 2007. 13 Nov. 2007. http://en.wikipedia.org/wiki/CableCARD.
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