Optical disc having uniform structure
AssigneeSamsung Electronics Co., Ltd.
InventorsKyung-geun Lee, In-sik Park, Du-seop Yoon
Life of this patent
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Abstract
An optical disc is manufactured under a uniform condition by forming grooves and lands on the entire surface of the disc. The optical disc is configured to obtain a reliable reproduction signal, and the grooves and lands are formed on a lead-in area, a user data area and a lead-out area of the optical disc. Since the same manufacturing condition can be adopted in mastering discs, the yield can be enhanced and the manufacturing cost can be reduced.
Claims78
An optical disc for recording and/or reproduction, comprising:
- a lead-in area;
- a user data area;
- and
- a lead-out area, wherein each of the lead-in area, the user area and the lead-out area includes grooves and lands formed thereon,
- wherein:
- the grooves and lands include wobbles which are formed on at least one side of the grooves and lands, and
- the wobbles in the lead-in area, the user data area and the lead-out area are modulated by different modulation techniques.
An optical disc for recording and/or reproduction, comprising:
- a lead-in area;
- a user data area;
- and
- a lead-out area, wherein
- each of the lead-in area, the user data area and the lead-out area includes grooves and lands formed thereon, and
- the user data area further includes data which is recorded on at least one side of the lands and the grooves,
- wherein:
- the grooves and/or the lands include wobbles, and
- the wobbles in the lead-in area, the user data area and the lead-out area are modulated by different modulation techniques.
A method of recording and/or reproducing an optical disc for recording and/or reproduction, the optical disc comprising:
- a read only area having first lands and grooves;
- and a rewritable area having second lands and grooves on which data is rewriteably recorded, wherein the read only area does not include pits and the formed grooves and lands comprise wobbles on at least one side of the grooves and lands, the method comprising:
- transferring data with respect to grooves and lands formed in a lead-in area, a user data area, and a lead-out area of the optical disc,
- wherein:
- the transferring the data comprises transferring the data with respect to the wobbles, and
- the wobbles in the lead-in area, the user data area and the lead-out area are formed by different modulation techniques.
An optical disc for recording and/or reproduction, comprising:
- a lead-in area;
- a user data area;
- and
- a lead-out area, wherein each of the lead-in area, the user area and the lead-out area includes a groove and a land formed thereon,
- wherein:
- the groove and land include wobbles which are formed on at least one side of the groove and land, and
- the wobbles in the lead-in area, the user data area and the lead-out area are modulated by different modulation techniques.
An optical disc for recording and/or reproduction, comprising:
- a lead-in area;
- a user data area;
- and
- a lead-out area, wherein
- each of the lead-in area, the user data area and the lead-out area includes a groove and a land formed thereon, and
- the user data area further includes data which is recorded on at least one side of the land and the groove,
- wherein:
- the groove and/or the land include wobbles, and
- the wobbles in the lead-in area, the user data area adn the lead-out area are modulated by different modulation techniques.
A method of recording and/or reproducing an optical disc for recording and/or reproduction, the optical disc comprising:
- a read only area having a first land and groove;
- and a rewritable area having a second land and groove on which data is rewriteably recorded, wherein the read only area does not include pits and the formed groove adn land comprise wobbles of at least one side of the groove and land, the method comprising:
- transferring data with respect to a groove and a land formed in a lead-in area, a user data area, and a lead-out area of the optical disc,
- wherein:
- the transferring the data comprises transferring the data with respect to the wobbles, and
- the wobbles in the lead-in area, the user data area and the lead-out area are formed by different modulation techniques.
Dependencies are inferred from the claim text.