Tuesday, December 15, 2009

Timeline Of Television Invention

The timeline of television invention spans many years primarily because it is such a complex process. There is no one device that can do everything that is required to record the images than transmits to a receiver and converts that back into images again. Below is an accounting of the timeline of television invention.

Timeline of television invention 1880s - The television was invented in stages by many talented scientists who each added an important piece that contributed to the finished product.In 1884, Paul Nipkow of Germany proposed and patented the world's first electromechanical television camera. Nipkow proposed a disc camera made up of two-foot diameter metal disks with holes cut into concentric circles. The holes basically cut the picture into lines that could be transmitted one dot at a time. Light sensitive selenium behind the perforated disk would capture the moving image. This camera became known as the Nipkow Disk.

Timeline of television invention 1890s - 1897, Karl Braun invented the cathode ray tube, the basis of every TV set until the development of LCD screens. In 1890, Boris Rosing used a mirror drum device similar to the device a photocopier uses today as a camera to transmit black-and-white silhouettes of simple shapes to a cathode-ray tube as a receiver. 1907

Timeline of television invention 1920s -American Charles Francis Jenkins used "prismatic rings" as a device to replace the shutter on a film projector and eventually became the basis for his first radiovision broadcast. He claimed to have transmitted the earliest moving silhouette images. In 1926, John Logie Baird transmitted the world�s first television picture using a mechanical system based on Nipkow�s disks that produced poor quality images and was eventually replaced by an electronic system. John Logie Baird is still widely hailed as the 'father' of television.

Timeline of television invention major controversy - In 1923, Vladimir Zworikyn received a patent for the iconoscope that was a primitive video camera. He spent the next six years researching photoelectric and receiving tubes and demonstrated his all-electronic television receiver using a "Kinescope", which was a special kind of cathode ray tube. In 1927, at the age of 21, Utah born Philo T. Farnsworth developed the world's first all-electronic system of television. He got the idea for his "image dissector tube" while watching a field being plowed into "furrows". He would later sell his patents after a long and bitter court battle with RCA.

Timeline of television invention 1940s - In 1948, or Community Antenna Television or Cable TV, was first introduced in Pennsylvania by John Watson. Watson developed the first cable system when he placed one antenna on top of his appliance store and another on top of a mountain and transmitted them back and forth. Watson�s invention of the cable television industry brought television to people who lived in areas that were unable to receive conventional broadcast signals.

Timeline of television invention 1950s - Next CBS broadcasts color using its non-compatible system. The one-hour program, called Premiere, featured Ed Sullivan and other CBS stars, and is carried on a five-station East Coast CBS-TV hookup.

Timeline of television invention 1960s - 1960, inventors at Bell Labs (AT&T) began development of a satellite communications system called Telstar. With the satellites in random geosynchronous orbits, 55 satellites can provide service 99.9 per cent of the time between any two points on earth.

Timeline of television invention 1990s and beyond - In 1997, Wide-screen HDTV went on sale. In 2000, TV became available on the Internet. Who know what changes will occur in the timeline of television invention as we go forward.

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