| 摘要 |
<p>A magneto-optical reproducing device of land/group reproduction system capable of reproducing arbitrarily information recorded on both tracks. A method for the reproduction is also disclosed. The information reproducing device reproduces information from an information recording medium on which first and second groups of information tracks on which information is recorded are alternately provided concentrically or spirally. The height of the tracks of the first group is different from that of the second group. The device is provided with an optical head which projects a light beam upon an information track of the first or second group and a moving mechanism which moves the position of the spot of the light beam in the radial direction of the medium. The moving mechanism moves the spot of the light beam from one track to another of the first group or from one track of one group to another of another group.</p> |
