History of television

1. History of Television
By J. Janardh

2. History of Television
●In 1873, Ireland, Young Telegraph operator Joseph May discovered
Photoelectic effect
● Selenium bars exposed to sunlight show a variation in resistance
● Variarions in light intensity can therefore be fransformed into electrical signals

3. History of Television
● In 1875, Boston, USA, George Carey proposed a system based explorations
of every point in the image
● In France in 1881, Senlecq published a sketch detailing a similar idea
● Boris Rosing in Russia had conducted experiment in transmitting images
● Later on John Logie Baird in England developed mechanical television
system
● Which scanned images using a rotating disk

4. History of Television
● In 1875, Boston, USA, George Carey proposed a system based explorations
of every point in the image
● In France in 1881, Senlecq published a sketch detailing a similar idea
● Boris Rosing in Russia had conducted experiment in transmitting images
● Later on John Logie Baird in England developed mechanical television
system
● Which scanned images using a rotating disk

5. ● Fransworth invention scanned images with a beam of electrons
● The first image he transmitted on it was a simple line
● The radio-electric transmission of television took place
● Using the medium wave radio band
● These transmissions attracted the attention of many amateur
enthusiasts
● In mid-1930 a number of researcher independently developed the
principle of interlaced scanning
● In 1933, Cathode-ray tubes came onto the market
History of Television

6. History of Television
● In March 1935, A television service was started in Berlin
● Pictures were produced on film and then scanned using a rotating disk
● In 1936, Electronic cameras were developed
● Nov, 1935 Television broadcasting began in Paris
● Same year, EMI company in England developed a fully electronic television
system 25 frames/ second
● The British government authorised the use of this standard along with the
Baird model
● Nov 1936, BBC launched its television services.

7. PUBLIC BROADCASTING
● The public broadcasting system was started in 1967 in US
● Several stations were established in New York and Los Angeles
● PBS original contribution to American television were the educational
programme
● The PBS force the dominace of cable TV in USA
● Large anntennas erected in high places
● By the end of 1960, there were 640 CATV systems in USA
● By 1971, Cable had more than 80k subscribers in New York
● Time Inc.'s & Home Box Office (HBO) started in 1975
● Several cable channels such as ESPN (1979), CNN (1980) started in USA.

8. TELEVISION IN INDIA
● In 1976, DD seperated from AIR
● In 1982, national telecasts were introduced.
● In the same year, color TV was introduced in the India.
● DD telecasted several commercial serials such as Hum Log (1984),
● Wagle Ki Duniya (1988), Buniyaad (1986–87)
● Comedy shows like Yeh Jo Hai Zindagi (1984),
● Mythological dramas like Ramayan (1987–88) and Mahabharat (1989–90)
● The Ramayana and Mahabharata were the first major television series
produced.
● By the late, 1980s more and more people started to own television sets.
● In 1997, Prasar Bharati, a statutory autonomous body was established.

9. TELEVISION IN INDIA
● In 1991, private and foreign broadcasters to engage in limited operations in
India.
● India now has over 167 million households (out of 234 million) with
television sets
● In which over 161 million have access to Cable TV or Satellite TV, including
84 million households which are DTH subscribers.
● Digital TV households have grown by 32% since 2013
●
Digital TV penetration is at 64% as of September 2014.

10. EMERGENCE OF PRIVATE TELEVISION IN INDIA
● STAR-TV stands for satellite TV for the Asian Region
● In 1991, Hutch Vision group founded the network in Hong Kong
● In 1995, Rupert Murdoch bought the network
● Indian owned private networks like ZEE-TV
●

11. EMERGENCE OF PRIVATE TELEVISION IN INDIA
● Foreign owned Sony broadcasters started private TV channels in India
● By the late 1990s over 40 TV channels were available
● Now India would have the world's largest cable and Satellite markets
● With the connectivity of 161 millions homes
● In 1997, Indian govt. Introduced Prasara Bharati Bill

12. THANK YOU