Do you know that without electromagnetism, video cassettes will still be the figment of the imagination of Chester Gould, the creator and artist of the famous detective comic strip Dick Tracy? Now that the video cassette recorder is a common household appliance, have you ever wondered how it works?
Home video recorders pick up electrical signals from TV stations but instead of converting the video signals directly to pictures, they are stored on magnetic tape in the same manner that a tape recorder store sound. Because TV signals combine pictures and sound, home video tapes are about four times the width of audio cassette tapes.
There are two video cassette recording system available, both are product of Japanese imagination and ingenuity. The Betamax was introduced by Sony in 1975 and the VHS (Video Home System of JVC (Japan Victor Company) followed in 1976. The system are not compatible. If you have a Betamax system, you cannot use the VHS tape and vice versa. Since Betamax was introduced in the Philippines, there are more Betamax sets use in here. The VHS is the most popular in the United States because that system preceded Sony’s system.
Based on what I had experienced, when the video cassette is inserted into the video recorder and the record button is pressed, the motor draws a loop of tape from between two reels in the cassette and coils it around an electrically drive n rotating drum.
Actually, that two video recording heads, which are actually electromagnets, are mounted on the drum and imprint the signals on the tape as they rotate with the drum. The video tape has a series of sloping tracks in the middle for the video signals and a lengthwise track along the edge of the tape for the audio signals.
Traders say that the general tone of the action today was “surprise” that the Greenback was able to push so much higher. Household Appliance