satellite TV: television's inventor is Britain's electronic engineer John Baird ， In 1923 he could have 8 graph alike installments for his invention to apply for the patent.at the end of 193 has sold the first television.in 11 British broadcasting corporation has broadcast in the world the first standard television program.henceforth, The humanity started to March into the television time.today, the people use ways and so on satellite, Disseminates earth's each corner the television signal.the television in the world the average per person capacity high extremely televity Every 1 people have one) to look over television's development now, may induce is three stages: machinery black-and-whinery Electronic black-and-white television, electronic color television.machinery black-and-white television stage tag In Italy's Kasai has invented chemistry tele photography system, Took the lead to realize the method which used electricity carries on the long-distance range transmission picture between Arab league mi ang ang S the miracle.afterward, telephone's invention, The selenium photo sensitive character istic discovery are conduct the television research the earliest initiation.various countries' Ent want to realize "the method which uses electricity to see the distant place moving scene the desire". in 1884 ， Nepal sprinkled shinao first to obtain the mechanical television to use the scanning disc patent of invention.hereafter, the electric eye The cathode ray tube, the vacuum diode, triode's invention has laid the solid foundation for television's birth.the 192- Many scientists proposed and test have realized the image signal transmission and the receive plan with the mechanical scanning method.thus is This time is "the machinery black-and-white television stage". in mechanical television's development aspect, The one who makes the outstanding contribution is Britain's Baird, He has established in the world the first special study machinery black-and-white television's laboratory.he used the crude devever N the world the first set of television transmitter and the receiver, And has obtained the first Zhang Zhen person picture which finally in October 25, 1925 the television transmitted, Was also born in the world the first machinery monochrome set ..

the television by electronic method started from the 192s-193s Mechanical television research's at the same time, The electronic technology also started the swift and violent development.american nationality Russia scientist Vladimir sky kosma Erest to make the important contributions in this aspect.he in 1929, Trial produced the successful television by electronic method system and the video tube.in 1931, also developed successfully the emit Ron And has obtained emit Ron's patent in 1933., one of us's television researchers, Law graciousness si wearn has obtained the television by electronic method system's patent in 1927. the 1936 year on November 2, Has carried on the first official television by electronic method system's public broadcast experiment in the British London, What at that time used was Britain's shoe nberg develops 45 line, Each second 5 interlacing electronic scanning system.this system uses under the emit Ron is leads in Britain's mcgill develops successfud Time broadcast television image's clarity has gone far beyond the mechanical scanning television, hence, The electronic black-and-white television time started.

1939-1945 years, because the second world war's ers Delayed television by electronic method's development, at that time, only then uk and us, Soviet and so on some countries have established the electron black-and-white system.until the early 5s, Various countries only then started to popularize the electronic black-and-white television.our country started in 1956 to prepare He television system, in 1957 developed the first set of black-and-white television transmitter, in 1958 produced the first monor Namely Tianjin produced "the Beijing trade mark" the television-only to have 5 channel electron tube monochrome sets.color telets On the color television's research began in 1925, at that time assisted interest, Baird et al. to be engaged in this aspect research And has made certain contribution.because the 2s-3s keypoint was the electronic black-and-white television's research Therefore color TV set's research mainly only then started the vigorous development in the 4s-5s 。