Method and circuitry for masking data in a memory device

Details Method and circuitry for masking data in a memory device Method and circuitry for masking data in a memory device

1991-10-18

1993-11-30

LaRoche, Eugene R.

Static information storage and retrieval

Read/write circuit

Bad bit

371 212, 371 71, G06F 1110

Patent

active

052672042

ABSTRACT:
A method and circuitry for masking data in a memory device are provided, which detect whether at least one failed bit location within the memory device is equal to a corresponding bit within input data. Data is written to the memory device as selectively inverted from the input data based upon whether the failed bit location is equal to the corresponding bit. An inversion bit within the memory device is selectively set to indicate whether the written data is inverted from the input data.

REFERENCES:
patent: 3768071 (1973-10-01), Knauft et al.
patent: 4045779 (1977-08-01), Markle
patent: 4615030 (1986-09-01), Kumagai

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