High density optical disc and method for reproducing and...

Details High density optical disc and method for reproducing and... High density optical disc and method for reproducing and...

2003-05-30

2008-03-11

Korzuch, William R. (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S052100, C369S052100

Reexamination Certificate

active

07342871

ABSTRACT:
A high-density optical disc such as a high density-digital versatile disc (HD-DVD) or Blu-ray disc, and a method for reproducing or recording data of the high-density optical disc. The high-density optical disc includes a lead-in area, a data area and a lead-out area. The lead-in area has control information. A minimum mark or space length of the control information recorded in the lead-in area is longer than that of data recorded in the data area. The control information of the lead-in area is copied to the lead-out area. On the basis of the data reproduction or recording method, an optical disc device can correctly read and confirm the control information from the high-density optical disc, minimize the interference between a mark and space in high-density recording data, reduce the effects of scratches or dust on the disc, and efficiently prevent an erroneous data reproduction or recording operation.

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