Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1995-03-03
1996-08-06
Black, Thomas G.
Static information storage and retrieval
Magnetic bubbles
Guide structure
395430, 39518203, 36518511, 364954, 36496576, 36422282, 3642543, 3642822, 364DIG1, 364DIG2, G06F 1730
Patent
active
055443567
ABSTRACT:
A non-volatile semiconductor memory that is erasable only in blocks is described. Each bit of the non-volatile semiconductor memory cannot be overwritten from a first logical state to a second logical state without a prior erasure. Each bit of the non-volatile semiconductor memory can be overwritten from a second logical state to a first logical state without a prior erasure. The non-volatile semiconductor memory comprises an active block for storing a first file, a reserve block for storing a second file, and a directory block. The second file is a copy of the first file. The copy is made during a clean-up operation prior to erasure of the active block. The directory block comprises a directory entry for identifying the first file.
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Elbert Dale K.
Levy Markus A.
Robinson Kurt B.
Black Thomas G.
Intel Corporation
Lintz Paul R.
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