The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1981
Filed:
Dec. 08, 1978
Akira Hattori, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A method of operating an associative memory, which is provided for storing information, comprises the steps of extracting necessary information by means of access to said associative memory and updating information retained in the associative memory. In the method and system of the present invention, said associative memory comprises a data portion for storing a plurality of block information units as one module information unit, and an address array portion for storing a module address corresponding to said one module information unit, said associative memory further containing valid information arranged in conjunction with said module address in said address array portion for indicating which of said plural block information units constituting said one module information units is valid. Further, an address, with respect to which said associative memory is retrieved, is subjected to access to the address portion of said associative memory in a field shifted from a field in which said address is compared with an address read out from said address portion, and valid information is allotted in a least significant bit to each of said block information so as to obtain an increased capacity for said associative memory, and updating of information stored in said data portion is carried out in the block information unit.