Memory with dynamic error detection and correction

摘要

A dynamic error correcting table can be embedded on an integrated circuit memory device. The error correcting table includes entries which are created for data when an error is detected and corrected during a read of the data. During subsequent reads, without intervening write or refresh operations, the entry in the table can be used to correct the error by merging the corrected bit with the data output from the array before it is applied to the ECC logic.

主权项

1. A method of operating a memory storing data and error correcting codes (ECCs) in addressable locations, comprising:
storing entries in a table, the entries identifying errors in the data stored in one or more addressable locations in the memory; reading data from a particular addressable location in the memory; and using the table to correct an error in the data stored in the particular addressable location, before using the ECC stored with the data.