Disc recording and reproducing device and disc recording and...

Details Disc recording and reproducing device and disc recording and... Disc recording and reproducing device and disc recording and...

2007-10-31

2010-10-19

Edun, Muhammad N. (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053200, C369S047120, C369S084000

Reexamination Certificate

active

07817517

ABSTRACT:
A disc recording and reproducing device and method record video data using a new file system other existing device cannot recognize. However, when a disc thus recorded is loaded in the existing device, the user is prevented from being instructed to format the disc (initialize the file system) or inadvertently erasing data thereon. The disc recording and reproducing device comprises the following elements. A first write-enable state setting unit checks a write inhibit flag when a disc is loaded, and sets the flag on the disc to a write-enable state when the flag is in a write-protect state. A first write-protect state setting unit checks information in a record history information storage when the disc is unloaded, and sets the flag on the disc to the write-protect state when data is recorded thereon or the flag in the memory is in the write-protect state and no data is recorded.

REFERENCES:
patent: 7676401 (2010-03-01), Sawada et al.
patent: 2005/0249078 (2005-11-01), Hwang et al.
patent: 2006/0280109 (2006-12-01), Narumi et al.
patent: 2003-272292 (2003-09-01), None

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