Title:
光学式記録媒体、その製造装置および製造方法
Document Type and Number:
Japanese Patent JP4226204
Kind Code:
B2
Abstract:
The optically recording medium (10) is provided with: groove tracks (11), on which the record information is recorded in a first region and on which the predetermined data is recorded as an embossed pit row (19) in a second region so as to prevent another data overwritten on the embossed pit row from being read out; a land track (12) formed in the first region and the second region between the groove tracks adjacent to each other; and pre-pits (13, 45, 46) arranged on the land track in the first region and the second region and including address information. The pre-pit (45, 46) in the second region is formed in a shape different from that (13) in the first region such that a larger amplitude of a pre-pit detection signal corresponding to the pre-pit is obtained in the second region.
More Like This:
Inventors:
Masahiro Kato
Application Number:
JP2000279280A
Publication Date:
February 18, 2009
Filing Date:
September 14, 2000
Export Citation:
Assignee:
Pioneer Corporation
International Classes:
G11B7/007; G11B7/013; G11B7/24079; G11B7/24085; G11B7/24091; G11B7/26; G11B20/00
Domestic Patent References:
| JP2001291280A |
Attorney, Agent or Firm:
Tatsuo Egami
Satoshi Nakamura
Satoshi Nakamura