Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1991-05-24
1993-08-17
Young, W. R.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 32, 369 47, 369 54, 3692753, G11B 700
Patent
active
052375536
ABSTRACT:
In data recording medium used with the apparatus of the present invention, there are allocated a sequential access zone consisting of a data area for recording real time data such as sounds or video images, a C list area for recording a C defect list managing defective sectors detected in the formatting process, and a G list area for recording a G defect list managing defective sectors detected in the recording process of data, and a random access zone consisting of a data area for recording random access data such as code data, a spare area for replacing defective sectors detected in the recording process, and an R list area for recording an R defect list managing the relation between defective sectors and corresponding spare sectors. In the recording process of data in the sequential access zone, data is recorded while defective sectors registered in the C defect list and G defect list are skipped, thereby achieving recording of both the random access data and the real time data. Moreover, sequential reproduction of real time data is realized.
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Draft Proposal 10089 presented by ISO/SC23, Oct. 25, 1989, Japan.
Azumatani Yasushi
Fukushima Yoshihisa
Hamasaka Hiroshi
Satoh Isao
Takagi Yuji
Matsushita Electric Industrial Co.
Young W. R.
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