Method of writing into unwritten region of optical disc,...

Details Method of writing into unwritten region of optical disc,... Method of writing into unwritten region of optical disc,...

2004-06-18

2009-02-03

Huber, Paul (Department: 2627)

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

C369S053240

Reexamination Certificate

active

07486593

ABSTRACT:
To surely write data readably into a region of a designated address even if an unwritten region exists ahead of the designated address. A step of registering beforehand an address map attached to an unwritten region of the data writing area; a step of judging whether an address located ahead of the designated address for writing data is an unwritten region or a written region; and a step of writing data into the data writing area of the optical disc based on the judgment result, are included. In the writing step, if the address located ahead of the designated address is judged as a written region, data writing is performed starting from a region of the designated address, and if the address located ahead of the designated address is judged as an unwritten region, the data writing is performed to unwritten regions including the aforementioned unwritten region.

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