| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that a reflection film for reflecting a playback image is conventionally provided in addition to a reflection film as a track forming layer in order to prevent deterioration in playback characteristics caused by noise light superimposed on a playback image of a hologram since a guide track for position control is formed, while a structure of a recording medium is complicated and a manufacturing cost is increased. <P>SOLUTION: The hologram is recorded around a center position between guide tracks. Since the hologram is not formed on the guide tracks, deterioration in the playback characteristics is suppressed and as a result, the reflection film for reflecting the playback image is not required and the playback image is reflected by the track forming layer. <P>COPYRIGHT: (C)2010,JPO&INPIT |
