Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2008-07-08
2008-07-08
Edun, Muhammad (Department: 2627)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S053240, C369S053410, C369S047100
Reexamination Certificate
active
07397744
ABSTRACT:
In a write-once recording medium, an optimum updating of the management information and a simple matching processing are to be achieved. To this end, in a system of a write-once medium, rendered accessible at random by employing the write
on-write indicating information, the management information, including a space bitmap and the last recording position information (LRA) indicating the last position of the recorded user data, is updated on the disc responsive to the generation or extinction of a gap (unrecorded area) in a region ahead of the LRA. The state of matching between the management information on the disc and the recording state of the user data is confirmed, responsive to the updating of the management information on the disc by the generation or extinction of the gap in the management information, by detecting whether or not the gap in the management information (gap indicated by the space bitmap) or the LRA is coincident with the gap or the LRA on the actual disc. Lacking the matching, the management information is updated to match the space bitmap or the LRA.
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U.S. Appl. No. 11/560,249, filed Nov. 15, 2006, Terada et al.
Kobayashi Shoei
Kuraoka Tomotaka
Terada Mitsutoshi
Edun Muhammad
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
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