195 1 year1month, American cross company developed the first practical video recorder under the leadership of marin. It is based on the principle of magnetic tape recording, and the magnetic tape passes through the multi-track head at a speed of 254 mm per second. The performance of this video recorder is poor, but it is still regarded as an outstanding technical achievement.

Compared with sound signal, the bandwidth of image signal is very wide, so it is difficult to record image signal on magnetic tape. The video recorder made by Ma Lin in 195 1 year has a maximum resolution of only1135. Later, the BBC, General Electric Company and American Radio Company improved this video recorder. In June, ABC exhibited a color video recorder19531KLOC-0/.27 cm wide and the tape speed was 900 cm per second. This kind of video recorder is called vertical scanning video tape recorder. The tape of the video recorder passes through the head too fast. Engineers from Ann Paikes Company in the United States believe that the contact speed between the magnetic tape and the magnetic head can be improved without increasing the running speed of the magnetic tape in the video recorder. In April, the company showed off their new video recorder. It is equipped with four video heads, using only 38 cm magnetic tape per second, and the contact speed between the magnetic tape and the head reaches 3962 cm per second. They let the head rotate across the width of the tape.

As early as 1953, Toshiba Corporation of Japan began to develop the rotary head video recorder. This kind of video recorder is called spiral scanning tape recorder. The magnetic tape spirally surrounds the magnetic drum, which is equipped with a horizontal rotating head. Toshiba Corporation of Japan began to supply spiral scanning tape recorders on 1960, using tapes with a width of 5.04 cm. The tape transmission rate is 38 cm per second. The spiral scanning recorder has small volume and less tape consumption, which can meet the requirements of playback quality. With the continuous improvement of video recorders, the tape bandwidth has changed from 5.04 cm to 1.27 cm, and the tape speed has also decreased from 38 cm per second to 25.4 cm per second. Later, Sony Corporation of Japan began to produce a series of home video recorders, with the tape width of 1.27 cm and the tape speed of 1.9 cm per second, and the price was only a fraction of that of broadcast video recorders. Later, video recorders gradually entered people's family life.