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EMC  2410 Intro to Electronic Media Edward Bowen Lecture Ten Television Begins
Just What is Television? <ul><li>Television is the electronic dissemination of still images in rapid enough succession to ...
And How Does Television Work? http://www.youtube.com/watch?v=UivqdpliyA0
Basic Image Formation <ul><li>Persistence of Vision and Moving Pictures. </li></ul>http://www.youtube.com/watch?v=3veFqnno...
Basic Image Formation <ul><li>Persistence of Vision and Moving Pictures. </li></ul>http://www.youtube.com/watch?v=0t9Edrlk...
Basic Image Formation <ul><li>1948: How Does A TV Work </li></ul>http://www.youtube.com/watch?v=tb_EXSIfHjA
Basic Image Formation <ul><li>1948: How Does A TV Work </li></ul>http://www.youtube.com/watch?v=qnu9jvgrq58
Basic Image Formation <ul><li>Cathode Ray Tube (CRT) </li></ul><ul><li>Phosphorus Dots / Pixels </li></ul>http://www.youtu...
Basic Image Formation <ul><li>Cathode Ray Tube (CRT) </li></ul><ul><li>RGB (Red, Green, Blue) </li></ul><ul><li>Phosphorus...
Basic Image Formation <ul><li>Electron Gun </li></ul><ul><li>Steering Coils </li></ul><ul><li>Phosphorus Screen </li></ul>...
Basic Image Formation <ul><li>Scanning </li></ul><ul><li>Fields / Frames </li></ul><ul><li>Flicker Frequency: Flashes per ...
Early Development <ul><li>1884 - Paul Nipkow proposed and patented the first mechanical television system.  He devised the...
Early Development <ul><li>1900 - The first known use of the word &quot;television, or  “to see from a distance” occurs at ...
Early Development <ul><li>Inventors attempt to build mechanical television systems based on Nipkow's rotating disks or </l...
Who is the Father of Television? John Logie Baird Philo Farnsworth Vladimir Zworykin
Or ? David Sarnoff
John Logie Baird Scottish by birth. Calvinist by upbringing. Loner. Driven. Tireless. Working in obscurity and poverty. He...
Baird - The Televisor <ul><li>1923 - Baird patents his television design.  </li></ul><ul><li>1924 - He builds a working pr...
Baird - The Televisor <ul><li>October 2, 1925 - In his laboratory, Baird transmits the first grayscale television picture,...
Baird - The Televisor <ul><li>He proceeds with public demonstrations  … </li></ul>
Baird - The Televisor <ul><li>And the media think him mad  … </li></ul>
Baird - The Televisor <ul><li>1926 - Baird demonstrates a fully working prototype of mechanical television, with grayscale...
Baird - The Televisor http://www.dailymotion.com/video/xcz4k7_milestones-in-science-engineering-n_shortfilms http://www.hu...
Baird - The Televisor http://www.youtube.com/watch?v=9DFcYRxFdTI
Baird - The Televisor http://www.youtube.com/watch?v=8GYGxEk0btA
Baird - The Televisor http://www.youtube.com/watch?v=D-yO07MQPMA
Baird - The Televisor <ul><li>1927 - Baird sends a cable transmission 438 miles to Glasgow. </li></ul><ul><li>1928 - Baird...
Baird - The Televisor “ The Man With the Flower in His Mouth (1930) - the first televised drama produced in Britain,  scre...
Baird - The Televisor <ul><li>1935 - Scheduled electronic television broadcasting begins in England, alternating between B...
Baird - The Televisor <ul><li>Some 20,000 Baird Televisors would be  </li></ul><ul><li>sold across England and the Contine...
Baird - The Televisor <ul><li>Baird moves on to </li></ul><ul><li>Color Television (demonstrated in 1928) </li></ul><ul><l...
Baird - The Televisor http://www.youtube.com/watch?v=upoWPhjZksk
Baird - The Televisor http://www.youtube.com/watch?v=LGzFz2Nrq6s
Baird - The Televisor http://www.youtube.com/watch?v=y6O_I9l1kok
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EMC 2410 Lecture 10 Spinning Discs and Biscuit TIns

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EMC 2410 Lecture 10 Spinning Discs and Biscuit TIns

  1. 1. EMC 2410 Intro to Electronic Media Edward Bowen Lecture Ten Television Begins
  2. 2. Just What is Television? <ul><li>Television is the electronic dissemination of still images in rapid enough succession to create the illusion of motion, and synchronized with sound. </li></ul>
  3. 3. And How Does Television Work? http://www.youtube.com/watch?v=UivqdpliyA0
  4. 4. Basic Image Formation <ul><li>Persistence of Vision and Moving Pictures. </li></ul>http://www.youtube.com/watch?v=3veFqnnob0A
  5. 5. Basic Image Formation <ul><li>Persistence of Vision and Moving Pictures. </li></ul>http://www.youtube.com/watch?v=0t9Edrlk7gc
  6. 6. Basic Image Formation <ul><li>1948: How Does A TV Work </li></ul>http://www.youtube.com/watch?v=tb_EXSIfHjA
  7. 7. Basic Image Formation <ul><li>1948: How Does A TV Work </li></ul>http://www.youtube.com/watch?v=qnu9jvgrq58
  8. 8. Basic Image Formation <ul><li>Cathode Ray Tube (CRT) </li></ul><ul><li>Phosphorus Dots / Pixels </li></ul>http://www.youtube.com/watch?v=D3OSTflMO80
  9. 9. Basic Image Formation <ul><li>Cathode Ray Tube (CRT) </li></ul><ul><li>RGB (Red, Green, Blue) </li></ul><ul><li>Phosphorus Dots / Pixels </li></ul>http://www.youtube.com/watch?v=cAZQxKaj8dk
  10. 10. Basic Image Formation <ul><li>Electron Gun </li></ul><ul><li>Steering Coils </li></ul><ul><li>Phosphorus Screen </li></ul>http://www.youtube.com/watch?v=GATkRMe_fl8
  11. 11. Basic Image Formation <ul><li>Scanning </li></ul><ul><li>Fields / Frames </li></ul><ul><li>Flicker Frequency: Flashes per second </li></ul><ul><li>Frames per second </li></ul><ul><li>http://videos.howstuffworks.com/discovery/29889-assignment-discovery-tv-and-flicker-frequency-video.htm </li></ul>
  12. 12. Early Development <ul><li>1884 - Paul Nipkow proposed and patented the first mechanical television system. He devised the notion of dissecting the image and transmitting it sequentially. To do this he designed the first television scanning device. He was 24 years old. </li></ul>
  13. 13. Early Development <ul><li>1900 - The first known use of the word &quot;television, or “to see from a distance” occurs at the World's Fair in Paris. </li></ul>
  14. 14. Early Development <ul><li>Inventors attempt to build mechanical television systems based on Nipkow's rotating disks or </li></ul><ul><li>Inventors attempt to build electronic television systems based on the cathode ray tube developed independently in England and Russia in 1907. </li></ul><ul><li>American Charles Jenkins and Scotsman John Baird follow the mechanical model while </li></ul><ul><li>Philo Farnsworth, working independently in San Francisco, and Russian emigrant Vladimir Zworkin, working for Westinghouse and later for RCA under David Sarnoff, advance the electronic model. </li></ul><ul><li>Electronic television systems eventual replaced mechanical systems. </li></ul>
  15. 15. Who is the Father of Television? John Logie Baird Philo Farnsworth Vladimir Zworykin
  16. 16. Or ? David Sarnoff
  17. 17. John Logie Baird Scottish by birth. Calvinist by upbringing. Loner. Driven. Tireless. Working in obscurity and poverty. He is considered the inventor of mechanical television, basing his system on the the Nipkow Disc.
  18. 18. Baird - The Televisor <ul><li>1923 - Baird patents his television design. </li></ul><ul><li>1924 - He builds a working prototype, the &quot;Televisor.&quot; </li></ul><ul><li>It has a motor mounted in a tea chest , with a home-made Nipkow disc (a cardboard circle cut from a hat box ), a darning needle for a spindle, and a discarded biscuit box as a lamp housing, all assembled with sealing wax and string . </li></ul><ul><li>Apart from the motor, his greatest investments are a few bull's-eye lenses, costing four pence each. </li></ul><ul><li>He transmits a silhouette of a cross two or three yards. </li></ul>
  19. 19. Baird - The Televisor <ul><li>October 2, 1925 - In his laboratory, Baird transmits the first grayscale television picture, the head of a ventriloquist's dummy nicknamed &quot;Stooky Bill,&quot; in a 30-line vertically scanned image, at five pictures per second. </li></ul>
  20. 20. Baird - The Televisor <ul><li>He proceeds with public demonstrations … </li></ul>
  21. 21. Baird - The Televisor <ul><li>And the media think him mad … </li></ul>
  22. 22. Baird - The Televisor <ul><li>1926 - Baird demonstrates a fully working prototype of mechanical television, with grayscale moving images, to members of the Royal Institution at Baird's residence and laboratory. </li></ul>http://www.youtube.com/watch?v=PmjXwU0pYao
  23. 23. Baird - The Televisor http://www.dailymotion.com/video/xcz4k7_milestones-in-science-engineering-n_shortfilms http://www.hulu.com/watch/135526/milestones-in-science-and-engineering-nipkow-baird-zworykin-the-development-of-television
  24. 24. Baird - The Televisor http://www.youtube.com/watch?v=9DFcYRxFdTI
  25. 25. Baird - The Televisor http://www.youtube.com/watch?v=8GYGxEk0btA
  26. 26. Baird - The Televisor http://www.youtube.com/watch?v=D-yO07MQPMA
  27. 27. Baird - The Televisor <ul><li>1927 - Baird sends a cable transmission 438 miles to Glasgow. </li></ul><ul><li>1928 - Baird transmits images across the Atlantic Ocean. </li></ul><ul><li>1929 - With the BBC (British Broadcasting Corporation), Baird begins experimental broadcasts. </li></ul>
  28. 28. Baird - The Televisor “ The Man With the Flower in His Mouth (1930) - the first televised drama produced in Britain, screened by the BBC as part of their experimental transmissions. http://www.youtube.com/watch?v=RJoYskwKxsM
  29. 29. Baird - The Televisor <ul><li>1935 - Scheduled electronic television broadcasting begins in England, alternating between Baird’s and a competing system. </li></ul><ul><li>Popular Mechanics articles described the competition. </li></ul>
  30. 30. Baird - The Televisor <ul><li>Some 20,000 Baird Televisors would be </li></ul><ul><li>sold across England and the Continent. </li></ul>
  31. 31. Baird - The Televisor <ul><li>Baird moves on to </li></ul><ul><li>Color Television (demonstrated in 1928) </li></ul><ul><li>Big Screen TV </li></ul><ul><li>Open Air Projections for Large Audiences </li></ul><ul><li>High Definition Television </li></ul><ul><li>3-D Television </li></ul><ul><li>Before passing away in 1946. </li></ul>
  32. 32. Baird - The Televisor http://www.youtube.com/watch?v=upoWPhjZksk
  33. 33. Baird - The Televisor http://www.youtube.com/watch?v=LGzFz2Nrq6s
  34. 34. Baird - The Televisor http://www.youtube.com/watch?v=y6O_I9l1kok

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