Television
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Go through the history of television

Go through the history of television

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Television Presentation Transcript

  • 1. Television
    • Greek tele, distant, with the Latin vision, seeing.
    • "a television set" is from 1955.
    • Shortened form TV is from 1948
    • British shortening telly is attested by 1940.
    • It is result of inventions and discoveries of many men and scientists . 
    • The period before 1935 is called the "Mechanical Television Era". 
    • Today's television is fully-electronic television system.
  • 2. Mechanical television system
    • Paul Nipkow developed a rotating-disc technology to transmit pictures in 1884.
    • He discovered the notion of dissecting the image and transmitting it sequentially.
  • 3. Nipkow disk
    • Mechanical viewers had the serious limitation of resolution and brightness.
  • 4. 1911 Rosing in Russia Cambell- Swinton in England
    • First transmission of images
  • 5. John Logie Baird - Mechanical
    • images in London in 1925
    • and of moving, monochromatic images in 1926.
    • 1920s
    • Baird's 30 line images demonstrated:
    • the transmission of moving silhouette
  • 6.  
  • 7. The image as transmitted was faint and often blurred. It is possible to transmit and reproduce instantly the details of movement, and such things as the play of expression on the face. Video1 Logie Baird 1920
  • 8. First transmission
  • 9. Charles Francis Jenkins invented the mechanical system called radiovision (1925)
    • He transmitted pictures of Herbert Hoover, then Secretary of Commerce and demonstrated a mechanical television scanning system using a revolving disk in 1925.
    • He correctly predicted:
    • "It will not be very long now before one may see on a small white screen in one's home notable current events, like inaugural ceremonies, ball games, pageants, as well as pantomime performance broadcast from motion-picture film."
    • This system was slow and its images were murky.
  • 10.  
  • 11.  
  • 12. 1930- transmitted moving silhouette
    • Charles Jenkins broadcasts the first TV commercial.
    • The BBC begins regular TV transmissions.
  • 13. Vladimir Zworykin
    • invented the cathode - ray tube called the kinescope in 1929.
    • Zworykin was one of the first to demonstrate a television system with all the features of modern picture tubes.
  • 14.  
  • 15. Kinescope images were capable of great flexibility.
    • The operator could make the image brighter or darker, adjust contrast, width and height, turn left, right or upside down.
    • The first and most primitive method of recording television programmes, production, or news story, a kinescope is a film made of a live television broadcast.
  • 16. 1933
    • Iowa State University (W9XK) starts broadcasting twice weekly television programmes in cooperation with radio station WSUI.
  • 17. Phil Farnsworth in 1935 with a television set he invented.
    • Transmitted complete electronic image-60 horizontal lines
  • 18.
    • In 1926, he moved to Los Angeles to carry out research.
    • In 1927 Farnsworth's Image Dissector camera tube transmitted its first image
    • In 1929 the system was further improved by elimination of a motor generator; the television system now has no mechanical moving parts.
  • 19.
    • By 1936 Farnsworth's company was transmitting regular entertainment programmes.
    • He travelled to England and formed an alliance with John Logie Baird . Baird and Farnsworth competed with EMI for forming the standard television system for the U.K.
    • By 1939 Farnsworth 's company had licenced patents to RCA.
    • (Video 2)
  • 20. 1937
    • CBS begins its TV development.
    • The BBC begins high definition broadcasts in London.
  • 21. 1939
    • Publica saw the TV sets for the first time ever.
  • 22. Television Development - 100 Years at a glance    
    • 1880s to 1899Period of Dreams, Concepts and Initial Discoveries
    • 1900The word "Television" is first used
    • 1922 to 1927Early Experiments with a MECHANICAL scanning disc system. .
  • 23. 1940
    • Peter Goldmark invents a 343 lines of resolution color television system
    • Peter Goldmark, working for CBS, demonstrated his color television system.
    • His system produced color pictures by having a red-blue-green wheel spin in front of a cathode ray tube.
  • 24. 1946
    • Goldmark's mechanical system was replaced by an electronic system.
  • 25. 1948
    • Cable television is introduced in Pennsylvania as a means of bringing television to rural areas.
    • One million homes in the United States have television sets.
  • 26. 1956
    • Robert Adler invents the first practical remote control called the Zenith Space Commander.
  • 27. 1962
    • AT & TH launches Telstar , the first satellite to carry TV broadcasts - broadcasts are now internationally relayed.
    • 1969
    • July 20, first TV transmission from the moon and 600 million people watch.
  • 28.
    • 1928 to 1934 First Mechanical TV Sets sold to public –
    • However, picture quality is lacking. 
    • Not suitable for commercial use. 
    • Electronic TV offers greater promise. 
  • 29.
    •   1926 to 1935 Early Experiments with All-Electronic Cathode Ray Television (the basic system we have today)
    • 1935 to 1941 Electronic (Experimental) TV begins broadcasting in Germany, England, Italy, France, USA, Holland,…
    • Early 1940s Work begins on CBS Mechanical Color Television
  • 30.
    • July 1, 1941  Electronic (Commercial) Black & White Television
    •   June 25, 1951First Mechanical Color Television Set Placed on Market  (CBS-Columbia) at $499.95.
    • May 1954First All-Electronic Color Television Set is RCA CT-100 , selling at $1,000  
  • 31.
    •   1987Japanese demonstrate ANALOG high - definition TV
    • 1990 General Instrument's Video Cipher division announces DIGITAL Hi-Definition System 
    • Late 1990s Internet, World-Wide-Web explodes onto the scene -- ushering in new global communications for the 21st century.
  • 32. Television introduction per country
  • 33.
    • http://inventors.about.com/library/inventors/blcolortelevision.htm
    • http://www.tvhistory.tv/History%20of%20TV.htm
    • http://www.statemaster.com/encyclopedia/Television
    • http://www.sfcityguides.org/public_guidelines.html?article=343&submitted=TRUE&srch_text=&submitted2=&topic=Inventions