| 摘要 |
<p>A recording medium adapted to improve the quality of sound or image recorded on optical recording media including CD, DVD, LD and CD-ROM which are used to record various kinds of data and programs, such as music, pictures and numerical formulae. As shown in the figure, this recording medium is provided with doubly arranged first and second holes (4, 5) in an inner silent region (2) constituting an inner non-recording region around a central hole (1), and third holes (7) in an outer silent region (3) constituting an outer non-recording region.</p> |
