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IEICE TRANSACTIONS on Electronics

Design and Evaluation of a 4-Valued Universal-Literal CAM for Cellular Logic Image Processing

Takahiro HANYU, Manabu ARAKAKI, Michitaka KAMEYAMA

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Summary :

This paper presents a 4-valued content-addressable memory (CAM) for fully parallel template-matching operations in real-time cellular logic image processing with fixed templates. A universal literal is essential to perform a multiple-valued template-matching operation. It is decomposed of a pair of a threshold operation in a CAM cell and a logic-value conversion shared by CAM cells in the same column of a CAM cellular array, which makes a CAM cell function simple. Since a threshold operation together with a 4-valued storage element can be designed by using a single floating-gate MOS transistor, a high-density 4-valued universal-literal CAM with a single-transistor cell can be implemented by using a multi-layer interconnection technology. It is demonstrated that the performance of the proposed CAM is much superior to that of conventional CAMs under the same function.

Publication
IEICE TRANSACTIONS on Electronics Vol.E80-C No.7 pp.948-955
Publication Date
1997/07/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on New Concept Device and Novel Architecture LSIs)
Category
Multiple-Valued Architectures

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