Information recording medium and information recording and repro

Details Information recording medium and information recording and repro Information recording medium and information recording and repro

1991-07-08

1993-12-14

Gensler, Paul

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 49, 360 53, G11B 509

Patent

active

052708772

ABSTRACT:
A disk shaped information recording medium has a virtual ROM area where data sectors, and parity sectors are recorded, and a disk definition area where management data of a virtual ROM area is recorded in a rewritable user area information recording and reproducing apparatus fabricates the information recording medium. Also, the information recording and reproducing apparatus prohibits a data recording operation with respect to the virtual ROM area and recovers a data of the defective sector detected in the virtual ROM area using a parity sector.

REFERENCES:
patent: 4656532 (1987-04-01), Greenberg et al.
patent: 4754345 (1988-06-01), Karlstetter
patent: 4814903 (1989-03-01), Kulakowski et al.
patent: 4835757 (1989-05-01), Abiko
patent: 4935825 (1990-06-01), Worrell et al.
patent: 5068842 (1991-11-01), Naito
patent: 5153879 (1992-10-01), Tanaka et al.
Proposed ANS for Digital Information Interchange 90mm Optical Disk Data Storage Cartridge, A U.S. Contribution to ISO/IEC JTC1/SC23, Sep. 1989.

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