| 摘要 |
The first and second heads (3, 4) for recording and reproducing are attached through electrostrictive elements to a rotary drum (1) with an angular spacing of substantially 180 DEG therebetween. When a video signal is recorded, a pilot signal recorded by the first head (3) over a predetermined interval is reproduced by the second head (4) while a pilot signal recorded by the second head (4) and spaced apart by a predetermined number of recording tracks is reproduced by the first head (3). Reproduced levels of the pilot signals are compared so as to control a drive voltage for the electrostrictive elements and thus to adjust a step difference between the first and second heads (3, 4) in the recording mode. |
