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The invention of the phonograph
The invention of the phonograph
The invention of the phonograph
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HDTV
It all started when Thomas Edison invented the phonograph. This opened up the idea of receiving and playing professionally produced entertainment at home.
As the years went by, there have been many advances in technology and ways to transmit signals through the air waves into people's homes. After all, this is what it's mostly used for, to get programs into people's homes. Whether it be movies, commercials, instructional videos, music, PSA's, news, sports. Whoever creates these programs have the intention of letting somebody else watch them.
Today in America our current broadcast standard is a 525 line/60 field per second based system called the NTSC (National Television systems Committee) .
This committee was established to insure order in the development process within the industry that would be accepted by the FCC. This standard was created in the 40's and 50's. Each receiver sold to the American public must conform to received the NTSC signal. This signal has proved to be a durable way of transmitting information for 50 years. But with today's technology, a new standard has been in the works, HDTV.
In September 1992 NBC's WRC-TV in Washington DC became the first television station in the country to send HDTV signals over the air waves. WRC-
TV's general manager then stated, "With advanced digital high-definition television, viewers will experience unmatched picture quality and superior sound resolution." There are many pro's and con's regarding having HDTV as the new standard.
Not all broadcasters are interested in HDTV at all. During the transitional period, broadcasters will have channel space to send NTSC signals and HDTV signals simultaneously. At first, the timeline for this to take place was about
7 years down the road. Now experts are saying 15 years is more accurate.
Broadcasters are eager to see which of the major corporations will be the first to make the change.
Even though a broadcast standard is a handful of years away, HDTV is already being used in other ways. Hospitals are taping surgical procedures and corporations are using HDTV for presentations. Dale Cripps, publisher of the on-line newsletter HDTV Today says, "HDTV is slick. If I were a corporate executive today, I'd never consider putting my best foot forward on anything but
HDTV." The director of the New Video Technology Project Baylor University, Cory
Carbonara says, "HDTV truly defined has 5 times the visual detail and 10 times the color information and more than twice the vertical and horizontal resolution of NTSC television." He also says that the picture is substantially brighter, the aspect ratio is more than a third larger and the sound quality is equivalent
A third method is to program all cable boxes from the headend to display a
peoples' homes was Brian Lamb, who in addition to being the chairman and CEO of
A TV signal is captured by a camera and then manipulated during program production. At this point the video must be at its highest quality and full bandwidth for recording, editing and special effects purposes. Then the TV signal needs to be compressed for economical transmission and storage. The possible efficiency of compression depends on a couple of factors. If a signal will be further edited and manipulated in the receiving studio it must maintain a relatively high quality and therefore can’t be compressed as much as a signal that will be sent directly to the viewer’s TV set. Also, the extent to which a signal can be successfully compressed depends on the type of program (E.g. movies can be compressed more than sports). Nevertheless, a typical program mix will fit up to 10 digital television channels on one transmission line.
Technology has grown in more ways than one, where it has reached the point of
What major technology change has had the greatest impact on the quality of your life?
faster and burden less. Technology has made life a lot easier on us and I am not trying to say
of the innovations in technology and quality of living over the last 100 years. Back in
The purpose of this article is to inform readers on the several technological advancements that changed
The Digital Video Recorder used in modern entertainment systems can now be replaced with an easy to use streaming video devices. As the online video libraries grow to include more content, eventually streaming set top boxes will provide this functionality, without the need to schedule recordings or manage space used by previous recordings. One additional advantage, often referred to as TV Anywhere, allows viewing of online content from a variety of devices, as long as an Internet connection is available. Now the real motivation that drives many Americans to consider these alternative options is money.
Technology today is only getting better and with new things like large-scale irrigation systems and dams
As the years progressed, so did the technology, there is always room to implement new technology
Another example of the change in our technology over the last century is the change in the computer. In 1946, the first electronic computer called the ENIAC took up the space of a large room. Instead of using transistors and IC chips, the ENIAC used vacuum tubes. Compared to many computers now, the ENIAC is about as powerful as a small calculator. That may not be much, but it is a milestone because there would not be computers today if it were not for the ENIAC. As the years passed, the computer became smaller and more powerful. Today, more than half of the American population has a computer in their home. The personal computers today are thousands of times more powerful than the most powerful computers fifty years ago.
Technology has gone from colorless block televisions and giant computer to computers you could fit on your fingertip and televisions that are flat and 3 Dimensional. Now they even are making holograms and televisions that go into an even better quality of graphics. There are thousands
At home I have ntl digital, I use this for my personal use when I am