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THE EVOLUTION OF TV
TVs have come a long way since the early days. Let's get started to see how televisions have evolved
from the 1940s to the present.
Today, we can watch television on computers or vice versa. Our modern cell phones now act as tiny television screens with which we can watch whatever we want, whenever we want. All of this great technology had to start somewhere. Television was not invented by a single inventor, instead many people working together and alone over the years, contributed to the evolution of television.
The First Television SetsThe very first television sets were mechanical in nature instead of electronic. As an invention the general idea was to send pictures through radio transmissions so that people could see events going on in another place. The first public demonstration happened in 1927 when a speech delivered by Secretary of Commerce Herbert Hoover was transmitted from Washington to New York City and seen on a two inch by three inch screen.
Pictures were generated by a small motor and spinning disc with a neon lamp on a small screen that was a few inches across. Basically you could watch images move on a screen no bigger than today's cell phone screens. Ironic how the progenitor of the television has now come full circle back to its original size as televisions got bigger and then smaller.
Other companies started getting in on the act with Farnsworth, General Electric, Emerson, Motorola, and Zenith all producing televisions sets. By 1950 the number of televisions in households reached over ten million compared to just 190,000 in 1948. As the war was over and Americans settled down they began to indulge in more and more television programs.
Colour Sets and Cable
Television finally got colorized in the 1964. Even so, sales of color sets didn't overtake those of black and white versions until 1972 and 1973 when over 10 million color sets were sold. The early 1970s also saw the number of households with color televisions go over 50 percent for the first time.
By 1967, most TV broadcasts were in colour.
More advances in the 1960s included cable television even though by 1999 only 68 percent of households had cable television. Once cable became the norm for television viewers then satellite channels began to take over.
Now flat panel high definition televisions dominate the television set market. You can even watch high definition television on your mobile phone on a screen no bigger than the first mechanical television in 1927. Luckily you can actually hold the phone in your hand unlike the huge box that the first television sat in.
The reason HDTV works so well with crisp pictures and sound is that the transmission is in digital formats instead of analog. Data is sent and received in better packets with digital information. LCD and LED television screens interpret the new information and turn the transmission into as many pixels as humanly possible for the best picture quality.
Plasma TVs also became available in high definition, like Matsushita Electric Industrial Co., Ltd.'s 150-inch Advanced High-Definition Plasma Display.
Apple began shipping the Apple TV in spring 2007, billing the product as a way to tie the power of your computer and high-speed Internet connection to the gorgeous display of an HDTV. You can connect iTunes to the Apple TV and watch television programming, movies, YouTube videos and more.
Panasonic's Internet televisions featuring Viera Cast were another example of television converging with computers.
Now that 3-D television is upon us what is the next step? One theory is holograms are the next logical step that can bring a television show directly into your living room. Imagine being in the middle of the huddle at an NFL game because the television camera broadcasts images looking up into the group of men and interprets the image in life-size detail in your living room.
Image via Review Explorer
Scientists are working on holographic televisions right now in Finland during a three year study. Don't expect them in your house anytime soon. It took HD television ten years to get off the ground so probably around fifteen to twenty years from now we'll see some vastly different television experiences according to CNN.
Captions and images via How Stuff Works
Text via Yahoo Voices
MIT Team Use Kinect to Create Holographic TV
Another ingenious use of the Xbox 360′s Kinect sees a team from MIT creating a holographic TV…
The MIT system uses the Kinect to capture data at around 15 frames per second and that data is then transmitted to a PC, via the Internet. The PC has three standard graphics chips attached that work together to recreate the image holographically, which, in the case of the video below, is that of graduate student Edwina Portocarrer re-enacting Princess Leia’s iconic ‘Help Me Obi-Wan Kenobi, you’re my only hope‘ holograph scene from Star Wars – what other scene could you use when demonstrating such technology?
As you can see from the video, there’s still a lot of work to do in terms of image replication, but the essential technology is in place – this is a real-time holographic image that has only been worked on for a matter of weeks – and whilst the actual holographic display is a unique piece of equipment that is the result of ‘decades of research’, Bove and his team are developing an alternative that should be cheaper to manufacture.
Could this be the early stages of a holographic consumer product being developed? Possibly. As Bove asks to MIT News, “How do you make it as cheap as possible?…..take advantage of hardware and standards and software and everything else that already exists….. Because that’s the quickest way to bring it to market.”
Text via Review Explorer
What lies beneath...
Image via Best Seller Junkie
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