France Telecom Etablissement Autonome De Droit Public

France Telecom Establissement Autonome De Droit Public

Tahar Ali-Yahia

Michel Dana

An association memory which permits the execution of all kinds of comparative operations. The associative memory includes a memory map (1) in which a search argument, which has been processed in a scanning module (3) and a masking unit (5,7), is compared to the data stored in the memory. After this comparison, the data obtained is recorded in a response register (11). When the search data and the stored data supply an association of variable length words, the result data is processed in a module for the processing of variable-length words (13) and in a multiple-response management module.

Associative memory architecture

The invention relates to a memory cell for a static associative memory comprising two arrays of transistors, a first array having a data storage function and a second array having a comparison function between the stored data item and a data item applied to the input of the cell, the comparison result being obtained on a selection line S, in which the second array (T1,T2,T3,T4) of transistors is partly formed by the transistors of the first array (T3,T4,T7,T8,T5,T6). The structure of the cell thus has reduced overall dimensions compared with known structures.

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Viroflay, France

Tahar Ali-Yahia