Optical information storage medium and recording/reproducing...

Details Optical information storage medium and recording/reproducing... Optical information storage medium and recording/reproducing...

2006-09-26

2006-09-26

Dinh, Tan (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S053300

Reexamination Certificate

active

07113475

ABSTRACT:
An optical information storage medium includes information on recording layers having the same reproduction channel characteristics or different reproduction channel characteristics. Nominal recording speed information is recorded in a read-only zone, and maximum and minimum recordable speed information is recorded in a recordable zone of an area other than a user data area. The nominal recording speed information is reproduced using a differential signal channel or a sum channel, and the maximum and the minimum recordable speed information is reproduced using the sum channel. The optical information storage medium addresses a situation where the nominal recording speed is not satisfied due to errors occurring during the manufacture of the storage medium. Thus, the defective disc proportion can be reduced, and loss of user data due to application of inaccurate recording layer information can be prevented.

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