FIELD: optical information-carrying mediums.
SUBSTANCE: optical information-carrying medium consist of lead-in zone, lead-out zone and user data zone between lead-in and lead-out zones which carries user data. Pits are formed in lead-in zone, in user data zone and lead-out zone. Track pitch in all lead-in zone or its part differs from track pitch in all other zones of optical information-carrying medium. Because of reduced tracking errors and reduced cross-talk the playback of important information reliability is increased.
EFFECT: increased reliability which ensures recording and/or playback effectiveness.
31 cl, 5 dwg
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Authors
Dates
2006-11-20—Published
2003-09-02—Filed