Static information storage and retrieval – Floating gate – Particular connection
Patent
1997-12-01
2000-03-07
Nelms, David
Static information storage and retrieval
Floating gate
Particular connection
36518511, 36518533, G11C 1606
Patent
active
060348917
ABSTRACT:
A system is described which stores data intended for defective memory cells in a row of a memory array in an overhead location of the memory row. The data is stored in the overhead packet during a write operation, and is read from the overhead packet during a read operation. A defect location table for the row of the memory array is provided to identify when a defective memory cell is address;ed for either a read or write access operation. During a write operation, the correct data is stripped from incoming data for storing into the overhead packet. During a read operation, the correct data is inserted into an output data stream from the overhead packet. Data written to defective cells can be either a custom setting, a default setting, or the original data. Shift registers are described for holding good data during either a read or write operation. The number of shift registers used is determined by the number of states stored in a memory cell. The shift registers use a marker for alignment ofdata bits in a data stream.
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Auduong Gene N.
Micro)n Technology, Inc.
Nelms David
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