Associative memory capable of searching for data while...

Details Associative memory capable of searching for data while... Associative memory capable of searching for data while...

2007-10-02

2007-10-02

Phan, Trong (Department: 2827)

Static information storage and retrieval

Associative memories

Ferroelectric cell

C365S189070, C365S230030

Reexamination Certificate

active

11148320

ABSTRACT:
A CAM unit has a memory array for storing storage data, and a RAM unit has a memory array for storing the same storage data and check bits added thereto for determining whether the storage data in its memory array has an error. An error correction circuit uses the check bits to correct any error of data read from the memory array of the RAM unit and rewrite the error-corrected data to the memory arrays. Even if a soft error occurs in the storage data, the check bits can be used to correct the error in the data and rewrite the error-corrected data. Thus, a matching comparison can be performed on the storage data with high reliability.

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*J.A. Fifield et al., “High-Speed On-Chip ECC for Synergistic Fault-Tolerant Memory Chips”, IEEE Journal of Solid-State Circuits, vol. 26, No. 10, Oct. 1991, pp. 1449-1452.
*Masaaki Mitani, “Industrial Mathematics for Restudy”, CQ Publishing Co., Ltd., Jan. 1, 2001, pp. 47-53.

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