Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1999-10-05
2000-08-29
Dinh, Tan
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
G11B 724
Patent
active
061118508
ABSTRACT:
A recording medium having a dummy signal area on at least one side of a recording area is used and information is recorded with a dummy signal added to at least one of the leading and trailing sides in the recorded information signal. The user data area remains unaffected by repeated overwriting so that recorded user data is reproduced correctly. In particular, the wave form distortion caused by fluidization of a recording film remains at the dummy signal area and does not affect the user data area, so that the reproduction of the target information (user data) is assured.
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Hirotsune Akemi
Minemura Hiroyuki
Miyamoto Harukazu
Miyauchi Yasushi
Terao Motoyasu
Dinh Tan
Hitachi , Ltd.
Hitachi Maxell Ltd.
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