Backup method of record information and method for reading...

Dynamic information storage or retrieval – Binary pulse train information signal – Format arrangement processing for auxiliary information

Reexamination Certificate

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C369S047440

Reexamination Certificate

active

07835247

ABSTRACT:
A backup method includes reading record information of an optical disc; when the reading operation fails, utilizing an optical disc drive to read backed up record information at a plurality of specified positions in the lead-out area; checking a status of a session as a preparation for following recording; utilizing the optical disc drive to record data into a session on the optical disc; updating record information of the optical disc to generate an updated record information when recording of the session is completed and simultaneously recording the updated record information including a TOC block within the lead-in area of the optical disc to a plurality of specified positions on the optical disc according to different data types of the record information to serve as backed up record information; and ending a recording operation of the session.

REFERENCES:
patent: 2002/0025139 (2002-02-01), Haino et al.
patent: 2004/0264322 (2004-12-01), Shishido et al.

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