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So

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So .who invented it?? The controversy . No other invention in history has been so hotly disputed as the prestigious claim to the invention of 'Tele-vision or ... – PowerPoint PPT presentation

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Title: So


1
So.who invented it?? The controversy.
  • No other invention in history has been so hotly
    disputed as the prestigious claim to the
    invention of 'Tele-vision or 'long-distance
    sight' by wireless.
  • Since Marconis invention of wireless telegraphy
    in 1897, the imagination of many inventors have
    been sparked with the notion of sending images as
    well as sound, wirelessly. The first documented
    notion of sending components of pictures over a
    series of multiple circuits is credited to George
    Carey. Another inventor, W. E. Sawyer, suggested
    the possibility of sending an image over a single
    wire by rapidly scanning parts of the picture in
    succession.

2
So.who invented it??
  • On December 2, 1922, in Sorbonne, France, Edwin
    Belin, an Englishman, who held the patent for the
    transmission of photographs by wire as well as
    fiber optics and radar, demonstrated a mechanical
    scanning device that was an early precursor to
    modern television. Belins machine took flashes
    of light and directed them at a selenium element
    connected to an electronic device that produced
    sound waves. These sound waves could be received
    in another location and remodulated into flashes
    of light on a mirror.
  • The credit as to who was the inventor of modern
    television really comes down to two different
    people in two different places both working on
    the same problem at about the same time
  • Vladimir Kosma Zworykin, a Russian-born American
    inventor working for Westinghouse, and
  • Philo Taylor Farnsworth, a privately backed farm
    boy from the state of Utah. Zworykin is
    usually credited as being the father of modern
    television.
  • the patent for the heart of the TV, the electron
    scanning tube, was first applied for by Zworykin
    in 1923, under the name of an iconoscope. The
    iconoscope was an electronic image scanner -
    essentially a primitive television camera.
  • Farnsworth was the first of the two inventors to
    successfully demonstrate the transmission of
    television signals, which he did on September 7,
    1927, using a scanning tube of his own design.
    Farnsworth received a patent for his electron
    scanning tube in 1930.

3
So.who invented it??
  • Another player of the times was John Logie Baird,
    a Scottish engineer and entrepreneur who
    'achieved his first transmissions of simple face
    shapes in 1924 using mechanical television. On
    March 25, 1925, Baird held his first public
    demonstration of 'television' at the London
    department store Selfridges on Oxford Street in
    London. In this demonstration, he had not yet
    obtained adequate half-tones in the moving
    pictures, and only silhouettes were visible.' -
    MZTV
  • In the late thirties, when RCA and Zworykin, who
    was now working for RCA, tried to claim rights to
    the essence of television, it became evident that
    Farnsworth held the priority patent in the
    technology. The president of RCA sought to
    control television the same way that they
    controlled radio and vowed that,
  • RCA earns royalties, it does not pay them, and
    a 50 million dollar legal battle subsequently
    ensued.
  • In the height of the legal battle for patent
    priority, Farnsworths high school science
    teacher was subpoenaed and traveled to Washington
    to testify that as a 14 year old, Farnsworth had
    shared his ideas of his television scanning tube
    with his teacher.

4
And the winner is.
  • Patent priority status ruled in favor of
    Farnsworth.
  • RCA, for the first time in its history, began
    paying royalties for television in 1939. Philo
    Farnsworth was recently named one of TIME
    Magazine's 100 Greatest Scientists and Thinkers
    of the 20th Century.

5
1928Television started in the 1920s as a
peepshow device. This means, the images could
only be seen by one viewer gazing into a narrow
opening. The quality of these early,, television
sets, with tiny vertical screens, was very poor.
However, the images where there and received in a
large part of Europe via the 'short wave', also
used for radio.
6
1934Many early television sets where housed in
huge Art-Deco cabinets, often wonderful examples
of furniture design. Even these large, pre 1936,
cabinets only displayed a tiny 30 lines
television screen
7
The first commercial television sets came on the
market in 1930 by the Baird Television
Development Company LTD. These sets however
where expensive and housed in a cast iron cabinet
of beautiful design
8
1941
9
   
Television During World War-II
  • World War-II halted nearly all television
    broadcasting worldwide
  • All commercial production of television equipment
    is banned for the remainder of the war. 
  •  
  • NBC's commercial TV schedule is canceled. 
  • Television is allowed to continue broadcasting on
    a very limited basis at some stations.  In
    England, however, ALL broadcasting comes to a
    complete halt, until June 7, 1946.
  •  

10
1946
  • The United States returns to peace time
    production.
  •   RCA begins production of 630-TS, the first
    television designed and manufactured after the
    war.  Approximately 10,000 units sold by the end
    of the year, with about 43,000 sold of this model
    before production ends in 1949.  Other
    manufacturers used the RCA chassis, and placed it
    in a cabinet of their own design.  The initial
    RCA selling price was 352. 

11
Responses
  •   One of television's critics, Darryl F. Zanuck,
    head of 20th Century Fox (movies) was quoted
    saying  "Television won't be able to hold on to
    any market it captures after the first six
    months.  People will soon get tired of staring at
    a plywood box every night." 

12
Firsts
  •   1946 May 9th -- Hourglass the first hour-long
    musical variety show, airs over NBC's three
    stations (New York City, Schenectady and
    Philadelphia).
  •   1946 June 19th -- The first televised
    heavyweight fight (Joe Louis vs Billy Conn),
    viewed by a record 140,000 (mostly at bars which
    had sets installed).  One year later, the
    Louis-Walcott fight is viewed by 1,000,000
    people.
  •   1946 October 2nd -- Faraway Hills becomes the
    first TV soap opera, airing on the new DuMont
    network May 7th -- Kraft Television Theatre
    starts on NBC, becoming the first commercial TV
    dramatic series.
  • 1947 May 7th -- Kraft Television Theatre starts
    on NBC, becoming the first commercial TV dramatic
    series.
  • 1947 September 30 -- First telecast of a World
    Series game.  NY Yankees vs. Brooklyn Dodgers.
  • 1947 October 5th -- Harry Truman becomes the
    first president to make an address to the public
    on TV from the White House.  He discusses the
    international food crisis, proposing meatless
    Tuesdays

13
1947 stat
  • About 44,000 TV sets in the US, vs 40 million
    radios
  • December 29th -- Howdy Doody Time begins its
    first broadcast on NBC.

14
1948
  • By July of 1948, estimates are that 350,000 TV
    sets are in operation in the USA.  3/4 of these
    are in the eastern network cities, and half are
    around New York City.
  • 27 Stations in 18 different cities are in full
    operation.
  • Only one in ten Americans has seen a television
    set up to this point.
  • About two dozen different TV set models are on
    sale, ranging from Pilot's 3" set at 100, to
    DuMont's 20" set at 2,495 (28,000 in today's
    money!).

15
1948 continued.And the advertising begins.
  • Gillette pays 100,000 (1.1 Million today) for
    the right to televise the Louis-Walcott return
    boxing match
  • Average of 3.47 persons watch each night per set
    in a household.
  • Of the 42 hours of TV available for viewing per
    week, the average set is operating for 17 hours.
  • 68 of the viewers remember the names of the
    programs' sponsors

16
1949
  • TV sales expand at a rapid rate -- are 600 ahead
    of 1948.
  • Laws prohibiting the installation of TVs in
    automobiles are enacted.
  • Howdy Doody merchandising tops 11 million for
    the year.

17
1950
  • APRIL  5,343,000 TV sets are in American Homes
  • SEPTEMBER 7,535,000 TV sets in USA
  • OCTOBER      8,000,000 TV sets -- 107 stations

18
1951
  • FEBRUARY DuMont established the first
    international hook-up (with Cuba)
  • Milton Berle gets 30 year 100,000 per year
    contract to do 360 shows.
  • JUNE 13,000,000 television sets in the USA
  • SEPTEMBER 4th First coast-to-coast telecast
    (President Truman speaks)
  • OCTOBER 15th  I Love Lucy show premieres on CBS

19
1953
  • 50 of Americans now have a television set
    (25,233,000 homes)

20
1954
  • MARCH   First color commercial by Pall Mall
    cigarettes
  •  APRIL  RCA Launches COLOR Television, with the
    sale of the CT-100, at 1,000 a copy.  Less than
    5,000 sell the first year.

21
1955
  •  RCA SELLS 20,000 COLOR TV SETS -- most all are
    21" models.
  • Average Annual Salary 5,000
  • Average cost of BW TV- 200
  • Average cost of colour TV 1000

22
1956
  • NOVEMBER  The videotape is first used by CBS,
    causing the impending death of the kinescopes -
    filmed television screens. 
  •  RCA SELLS 90,000 COLOR TV SETS -- Model CT-4
  • As the World Turn begins.

23
1957
41,000,000 homes now have television in the USA
24
1959
  • 42,000,000 American homes have television, some
    have 2 sets already
  • RCA SELLS 90,000 COLOR TV SETS -- Model CT-9.  In
    1960, after spending more than 130 Million in
    research and advertising, color television
    finally records its first profit for RCA. 

25
(No Transcript)
26
1980
27
1990
28
2000
29
2010
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