Who invented the first TV 40

John Logge Baird, an English electrical engineer, invented the television.

The period from 1930 to 1940 was the era when television was formed. In addition to significant improvements in broadcasting engineering techniques, television has begun to emerge as a mass medium. However, due to the outbreak of World War II, the research and development of television in various countries was greatly affected and almost interrupted.

It wasn't until after the end of World War II that television began to flourish in the United States and beyond.

In 1940, Gurmar developed an electromechanical color television system. On December 17, 1949, the first television cable between London and Suedon Kelfield was opened. In 1951, H. Lowe of the United States invented the three-gun shadow mask color picture tube, and Lorens invented the single-gun color picture tube.

In 1946, the United States broadcast the first all-electronic scanning television, and since then, television has entered the era of electronic scanning. During the war, there were only six commercial television stations in the United States, and the total number of television sets used by the private sector was only 10,000. After the war, new television stations sprung up in the United States.

By the end of 1948, the number of television stations had increased to 41, and the production of television receivers had reached 1 million units. By 1964, color TVs in the United States were even more popular, with 1.24 million units sold that year, almost the sum of the past ten years, making the total number of color TVs as high as 2.86 million units at once. By 1966, there were more than 10 million color televisions in the United States, and the USA's color TV popularization campaign was completed.

I copied it, you see, ha.

In 1924, the Englishman Baird invented the first television.

Wouldn't it be nice to go to the encyclopedia and check the TV yourself.

John Logge Baird, an English electrical engineer, invented the television.

The image of a puppet "scanned" by Scotsman John Logie Baird on October 2, 1925, during an experiment in London, is often seen as the symbol of the birth of television, and he is known as the "father of television".However, this perception is controversial. Because, also in that year, the American Vladimir Zworykin showed his boss his television system at Westinghouse.

Despite the same time, the television systems of John Logie Baird and Vladimir Zworykin were very different. John Logie Baird's television system has been referred to as a mechanical television, while Sfrocking's system has been called an electronic television. This difference is mainly due to the difference in the principle of transmission and reception.

The development of television is complex. There were many people doing the same research at about the same time.

The RCA launched the world's first black-and-white television in 1939, set the national standard for color television in 1953, and launched the RCA color television in 1954.

1. Inventor: In 1924, Baird, an Englishman, invented the most primitive television set and transmitted images with electricity. The RCA launched the world's first black-and-white television in 1939, set the national standard for color television in 1953, and launched the RCA color television in 1954.

2. Working principle: Because the RF signal should be mixed with some interference signals in the process of air transmission and attenuated with the increase of transmission distance, after the TV receives the weak RF TV signal from the wire or antenna (RF IN), it must first be demodulated through the tuner, and the high-frequency carrier components are filtered out after amplification, mixing and detection, and the composite all-TV signal of PAL, NTSC or SECAM is obtained. Separate the sound signal and the ** signal from the whole TV signal.

The audio signal is processed by the audio circuit and then sent to the speaker output. The signal is amplified, and the luminance and chromaticity signals are separated to obtain the YC component signal. Finally, the YC component signal is converted into YUV, and then converted into RGB component signal and sent to the CRT for display.

In the whole TV signal, due to the bandwidth occupied by the chromaticity signal, the electronic circuit of the TV directly intercepts the signal at the low end of the brightness of about 3MHz when the brightness and chromaticity signal are separated and processed. In this case, although the fluorescent key screen of the TV can reach the decomposition rate of about 500 lines, the horizontal decomposition rate of the TV signal actually input from the antenna is only about 260 lines. In addition, the signal strength of different channels is different, and the final image resolution rate reflected on the phosphor screen is not the same.