The invention of television (instantaneous observation of distant objects through electronic transmission) is not an overnight process, but a series of continuous and independent invention processes. 1897 Karl de Nantes Braun (1850- 19 18) invented the first commercial anode electron tube. But it was not until 1907 that Boris Rosen of St. Petersburg, Russia (now Leningrad) used it for electronic vision. A A A Kembel swinton (UK, 1863-1930)1June 90818 disclosed the principle of TV transmission in a letter entitled "Remote Electronic Vision" to Nature magazine. The earliest public TV demonstration was performed by Roger Baird (1888— 1946) on1October 27th in Scotland 1926 65438+. He used the improved mechanical scanning system proposed by Paul Gertberg Nieberkov in1884 65438+1October 6th. 1924 In February, he successfully laid a Maltese cross 3.05 meters away in Hastings, East Sussex, England. The facial image of William Tynton (15 years old) was first transmitted on 19251October 30th. Before the transmission, Teston demanded to pay 2 shillings and 6 pence. 1923 On February 29th, Vilandima Kautzma went to Ruijin (1889 was born in Russia, 1924 became an American citizen, and 1982 died) and submitted the report of applying for the patent of photoelectric camera tube.
Koyo Chijiro (born in1899 65438+1October 20th) successfully transmitted 40-line electronic images in Hamamatsu Institute of Technology, Japan on February 25th, 2006, using Braun cathode tube and Nipper chip.
Baird started his first TV "service" on September 30th with the help of the BBC transmitting station. 1929. 1930 In May, the first TV set was named Baird TV. The public broadcast of the 30-line scan was conducted between August 22nd 1932 and September 1 1.