Monday, November 30, 2009

1862 First Still Image Transferred

I invent my Pantelegraph and i become the first person to transmit a still image over wires.

1873

Scientists May and Smith experiment with selenium and light, this reveals the possibilty for inventors to transform images into electronic signals.

1876

At Boston civil servant i was thinking about complete television systems and in 1877 i put forward drawings for what he called a selenium camera that would allow people to see by electricity.

My coins the term "cathode rays" to describe the light emitted when an electric current was forced through a vacuum tube.

Late 1870s

Scientists and engineers like me, Figuier, and Senlecq were suggesting alternative designs for Telectroscopes.

1880

Inventors Alexander Graham Bell and Thomas Edison theorize about telephone devices that transmit image as well as sound.

Bell's Photophone used light to transmit sound and he wanted to advance his device for image sending.

I build a rudimentary system with light-sensitive cells.

1881

I experiment with my Telephotography that was similiar to Bell's Photophone.

1884 18 Lines of Resolution

Paul Nipkow sends images over wires using a rotating metal disk technology calling it the electric telescope with 18 lines of resolution.

1900 And We Called It Television

At the World's Fair in Paris, the first International Congress of Electricity was held. That is where Russian Constantin Perskyi made the first known use of the word "television."

1862 First Still Image Transferred

I invent my Pantelegraph and i become the first person to transmit a still image over wires.

1873

Scientists May and Smith experiment with selenium and light, this reveals the possibilty for inventors to transform images into electronic signals.

1876

At Boston civil servant i was thinking about complete television systems and in 1877 i put forward drawings for what he called a selenium camera that would allow people to see by electricity.

My coins the term "cathode rays" to describe the light emitted when an electric current was forced through a vacuum tube.

Late 1870s

Scientists and engineers like me, Figuier, and Senlecq were suggesting alternative designs for Telectroscopes.



http://www.bostonherald.com/blogs/sports/rap_sheet/wp-content/uploads/2009/09/old_tv.jpg

Friday, November 20, 2009

Most business magazines will tell you the phone companies will have a tough time unseating the cable companies when it comes to TV transmission. Here is why every one of those magazines and newspapers is wrong: HDTV selection stinks today. Apparently, I spent a fortune for a 60" HDTV so I could watch but a handful of channels on it.

Most of what I watch is not HDTV and I either can have a black square around what I view or choose to stretch the picture to fill the whole screen. Every actor gains 20 pounds if I use the latter approach, and I am sick and tired of paying more for a TV that, most of the time, makes my TV viewing experience worse.

The phone companies should supply 50 HD channels, or even more. If they did that, I would switch to IPTV tomorrow and never look back. I understand fully that, without HD content, this isn't possible, but Hollywood and content providers need to realize that HDTV will be the next big thing for the industry. They need to start putting out the programming. There certainly is an audience for it. The question is, how much more will people pay for more HDTV programming. I would say $20–$25 per month - about $1 per HD channel per month - is painless if you get another 20–30 HD channels. Hopefully, this can be a profitable idea for the phone companies.


I was a Scottish engineer, most famous for being the first person to demonstrate a working television.

I was born on 14 August 1888 in Helensburgh on the west coast of Scotland, im son of a clergyman. Dogged by ill health for most of my life, he nonetheless showed early signs of ingenuity, rigging up a telephone exchange to connect my bedroom to those of my friends across the street. My studies at Glasgow University were interrupted by the outbreak of World War One. Rejected as unfit for the forces, I served as superintendent engineer of the Clyde Valley Electrical Power Company. When the war ended i set himself up in business, with mixed results.

then i moved to the south coast of England and applied mymself to creating a television, a dream of many scientists for decades. My first crude apparatus was made of odds and ends, but by 1924 i managed to transmit a flickering image across a few feet. On 26 January 1926 i gave the world's first demonstration of true television before 50 scientists in an attic room in central London. In 1927, my television was demonstrated over 438 miles of telephone line between London and Glasgow, and i formed the Baird Television Development Company. (BTDC). In 1928, the BTDC achieved the first transatlantic television transmission between London and New York and the first transmission to a ship in mid-Atlantic. I also gave the first demonstration of both colour and stereoscopic television.

In 1929, the German post office gave me the facilities to develop an experimental television service based on my mechanical system, the only one operable at the time. Sound and vision were initially sent alternately, and only began to be transmitted simultaneously from 1930. However,my mechanical system was rapidly becoming obsolete as electronic systems were developed, chiefly by Marconi in America. Although i had invested in the mechanical system in order to achieve early results, i also been exploring electronic systems from an early stage. Nevertheless, a BBC committee of inquiry in 1935 prompted a side-by-side trial between Marconi's all-electronic television system, which worked on 405 lines to my 240. Marconi won, and in 1937 my system was dropped.

Im died on 14 June 1946 in Bexhill-on-Sea in Sussex.

Thursday, November 19, 2009

 I was born on August 13th, 1888, in Helensburgh, Dunbarton, Scotland and died on June 14th, 1946, in Bexhill-on-Sea, Sussex,

England.I received a diploma course in electrical engineering at the Glasgow and West of Scotland Technical College (now called Strathclyde University), and studied towards my Bachelor of Science Degree in electrical engineering from the University of Glasgow, interrupted by the outbreak of W.W.I.


system. During the 1920's, I and American Clarence W. Hansell patented the idea of using arrays of transparent rods to transmit images for television and facsimiles respectively.


My 30 line images were the first demonstrations of television by reflected light rather than back-lit silhouettes. I based my technology on Paul Nipkow's scanning disk idea and later developments in electronics.


My television pioneer created the first televised pictures of objects in motion (1924), my first televised human face (1925) and a year later I televised the first moving object image at the Royal Institution in London. My1928 trans-atlantic transmission of the image of a human face was a broadcasting milestone. Color television (1928), stereoscopic television and television by infra-red light were all demonstrated by me before 1930. I successfully lobbied for broadcast time with the British Broadcasting Company, the BBC started broadcasting television on my 30-line system in 1929. The first simultaneous sound and vision telecast was broadcast in 1930. In July 1930, my first British Television Play was transmitted, "Im the Man with the Flower in his Mouth."


Wednesday, November 18, 2009

who is creadited for this innovation

nventors anticipated the public demand for television before the advent of radio broadcasting. So many participated in the development that it is impossible to answer the question "Who invented television?", but a few were so important as to be recognized as pioneers.

Paul Nipkow proposed the first practical mechanical scanner in Germany in 1884. The scanner was a rotating disk with holes arranged in a spiral around its edge. Light passing through the holes as the disk rotated produced a rectangular scanning pattern or raster which could be used to either generate an electrical signal from the scene for transmitting or to produce an image from the signal at the receiver. As the disk rotated, the image was scanned by the perforations in the disk, and light from different portions of it passed to a photocell. The number of scanned lines was equal to the number of perforations and each rotation of the disk produced a television frame. In the receiver, the brightness of the light source would be varied by the signal voltage. Again, the light passed through a synchronously rotating perforated disk and formed a raster on the projection screen. Mechanical viewers had the serious limitation of resolution and brightness.

John Logie Baird, a Scottish engineer-inventor, successfully promoted a television system based on the Nipkrow principle, received backing and sold transmitters and receivers. Laboratories in the United States and Great Britain worked to develop an all-electronic system. In Britain, the Electric and Musical Industries, Ltd., provided a system along with Baird's, and these were experimentally used to broadcast television programs by the BBC in November 1936. The EMI system won overwhelmingly. An American inventor, Charles Francis Jenkins, followed with a rotating ring whose thickness varied and increased around its circumference, forcing a rotating prism. By using two rings overlapping at right angles, a beam could be made to scan both horizontally and vertically, which unfortunately produced small, dim and fuzzy images. Jenkins' system, like Baird's, failed on the basis of poor quality.

AT&T first demonstrated a television system developed by one of Bell Lab's scientists, Herbert Ives, again based on the Nipkow disks. GE also demonstrated a mechanical system developed by Ernst Alexanderson. David Sarnoff, however, would turn to research for a successful electronic system.

In the 1920's, Alan A. Campbell-Swinton, a prominent electrical engineer in London, proposed a system that would use CRT's displaying the picture at the receiver, with electromagnetic scanning to form the raster. His transmitter tube, using a chamber filled with gas which could conduct electrons, was not suitable. Credit for the first practical TV signal-generator of pickup must be shared by Vladimir K. Zworykin and Philo T. Farnsworth, who invented the iconoscope and the image dissector respectively. Successful electronic TV would follow.

http://ieee.cincinnati.fuse.net/reiman/10_1994.html

Tuesday, November 17, 2009

                       What was the purpose of the television?


Yes television is there for entertainment. But is also a way of getting information across to the public e.g. news stories ans weather. For example, the news ias there to educate us about important decisions happening around the world and the weather is there to tell us a message of how the day is going to be in advance so we are able to make plans if wishing to go out to travel

Wednesday, November 4, 2009

who invented the tv?

It was indeed John Logie Baird who was born on the 13th August 1888 in Helensburgh,Dumbarton,Scotland.He died on 14th June 1946 in Bexhill -on -Sea,Sussex England.
He was a Scottish engineer.Plagued by ill health,he gave up his job as an electric-power engineer in 1922 and devoted himself to television research.He produced televised objects in outline in 1924 and recognizable human faces in 1925,and in 1926 became the first person to televise pictures of objects in motion.He demonstrated colour television in 1928. The German post office gave him facilities to develop a television service in 1929.When the BBC television service began(1936),his system competed with that of Marconi Electric and Musical Industries:the BBC adopted the latter exclusively in 1937.Baird was reported to have completed research on stereoscopic television at the time of his death.