Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format
Patent
1994-05-23
1997-01-07
Black, Thomas G.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data in specific format
360 722, G11B 2012, G11B 509, G11C 800
Patent
active
055923429
ABSTRACT:
A method and an apparatus for packing variable size user data records into fixed size blocks on a storage medium. The invention includes the steps of receiving user data of variable record lengths along with error detection information; creating a data page for each user data record; building a map entry of record packing information for each data page; and storing each data page and its associated map within the same physical record on a storage medium. The data pages being stored in consecutive order and the map entries are stored in reverse order. A predetermined number of physical blocks are combined to form a logical block and a predetermined number of logical blocks form an entity.
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Bitner Haim
Hall Dana
Black Thomas G.
Chen John C.
Choules Jack M.
Harrison David B.
Quantum Corporation
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