FIELD: physics, computer engineering.
SUBSTANCE: disclosed is an information recording medium, a reproducing device and a recording device. The medium includes three or more information recording layers. Each layer includes a trial recording region. One of the layers includes a control data region designed for reproduction only. One of the layers includes recordable control data regions situated on the outer and inner sides of the trial recording region of one of the layers. Each of the two or more other layers includes a trial recording region in a radial position which partially overlaps the radial position of the control data region designed for reproduction only. Each of the two or more other layers includes a record-inhibit region, in which recording is not permitted, a radial position which partially overlaps the radial position of the control data region designed for reproduction only.
EFFECT: reduced effect of the trial recording region on trial recording performed in another layer.
3 cl, 1 tbl, 28 dwg
