Information record medium and information writing/reading...

Details Information record medium and information writing/reading... Information record medium and information writing/reading...

2008-04-22

2008-04-22

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S275300, C369S047280, C369S047150

Reexamination Certificate

active

10818789

ABSTRACT:
An information writing/reading apparatus that cooperates with an information record medium including a ROM area and a RAM area, either the RAM area or the ROM area having in advance control information recorded thereon used to limit reading and/or writing of information, the information writing/reading apparatus including an optical pick-up unit for reading information stored on the information record medium; and a control unit for, based on the control information read by the optical pick-up unit, limiting reading and/or writing of information from/to the other area on which the control information is not recorded and outputting a signal which notifies of presence of the other area only out of the ROM area and the RAM area on the information record medium.

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