Data management method and data management apparatus

Abstract

A data management method is first used for registering the plurality of entry data having n-bit length and performing match retrieval by masking a (n−m(i)) bit from the least significant bit side, whereby to detect the value of an m(i) bit from the side of the most significant bit matching a specific entry data. Then match retrieval is performed repeatedly by shifting a bit to be masked by an m(i+1) bit each time toward the low order side and detecting a corresponding value of m(i+1) bit until no bit to be masked exists so as to detect the value of an n bit matching the entry data. Further, an entry address at which the specific entry data matching the value of the n bit thus detected has been registered is obtained in order that a new entry data is registered at the entry address. A data management apparatus has a control circuit for controlling the operation of the associative memory in accordance with the data management method according to the present invention.

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