| 摘要 |
<p>A video signal recording apparatus has a tape drum (1) around which a magnetic tape (2) is to be wrapped, and a first and a second rotary head (5A, 5B) arranged alternately to come into contact with said magnetic tape (2). The extending directions of transducer gaps of said heads (5A, 5B) are different from each other, and the initial times when the heads (5A, 5B) come into contact with the magnetic tape (2) are synchronized with vertical sync signals of recording signals supplied from a camera (9, 10), thereby recording a video signal on said magnetic tape (2). The video signal is reproduced by a playback apparatus which has two rotary heads (7A, 7B) arranged in such a manner that one of them causes a time difference of (n + 0.5) H (wherein n is an integer and H is one horizontal period) relative to a standard angular distance of 180 DEG . In the video signal recording apparatus, when the wrap angle of the magnetic tape (2) around the tape guide drum (1) is theta , the wrap angle theta is selected so that: <MATH> where M and M min are integers Moreover, when the above expression equals M, an angular distance alpha between the gaps of the first and second rotary heads (5A, 5B) is selected so as to cause a time difference of mT (where m is an integer and T is a time corresponding to one horizontal period), and when the above expression equals M min + 0.5, the angular distance alpha is selected so as to cause a time difference of (m + 0.5) T.</p> |
