Optical recording medium
AssigneePioneer Corporation
InventorsToshihiko Takishita, Masahiro Kato, Eiji Muramatsu, Kunihiko Horikawa, Shoji Taniguchi, Atsushi Yamaguchi
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Abstract
An optical recording medium is designed to generate a read signal free from waveform distortion during reproduction of information. The optical recording medium is formed with information tracks on which data pits carrying information data is to be formed, and prepit tracks previously formed with a plurality of prepits. Each of the information tracks and each of the prepit tracks are positioned adjacent to each other, and each of the prepits is formed to be spaced apart from adjacent information tracks in at least its bottom part.
Claims6
An optical recording medium comprising:
- information tracks on which data pits carrying information data is to be formed;
- and
- prepit tracks previously formed with a plurality of prepits,
- wherein each of said information tracks is formed adjacent to each of said prepit tracks in a radial direction of said recording medium, and each of said prepits is connected to at least one of said information tracks to a middle of a depth of each of said prepits.
An optical recording medium comprising:
- information tracks on which data pits carrying information data is to be formed;
- and
- prepit tracks previously formed with a plurality of prepits,
- wherein each of said information tracks has a width, in a radial direction of said recording medium, larger than that of each of said prepits, and
- further wherein a radial line extending from a center of the optical recording medium to an outer circumference thereof intersects at least one data pit and one prepit.
An optical recording medium comprising:
- information tracks on which data pits carrying information data is to be formed;
- and
- prepit tracks previously formed with a plurality of prepits,
- wherein each of said information tracks has a width, in a radial direction of said recording, medium, larger than that of each of said prepits, and
- wherein each of said prepits is connected to at least one of said information tracks at a middle of a depth of each of said prepits.
Dependencies are inferred from the claim text.