Dynamic magnetic information storage or retrieval – Recording for selective retention of a special occurrence
Patent
1983-09-29
1987-03-24
Cardillo, Raymond F.
Dynamic magnetic information storage or retrieval
Recording for selective retention of a special occurrence
364406, 235379, G11B 500, G06F 1530, G06F 700
Patent
active
046529403
ABSTRACT:
In the on-line system, information called journal indicative of the hysteresis of process are written in turn in magnetic tape. At each process, journal information is added with information indicative of journal and the date on which the journal information was written. At the time of system resuming process after system down, the information added to journal at each process is read in order that the magnetic tape being read is decided to have recorded thereon the journal to be used for the system resuming process.
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Bowler Alyssa H.
Cardillo Raymond F.
Hitachi , Ltd.
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