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:
Apr. 02, 1996
Filed:
Jul. 23, 1993
Bertrand Conan, Aix En Provence, FR;
SGS-Thompson Microelectronics S.A., Gentilly, FR;
Abstract
Memories in integrated circuit form can have several amplifiers per data contact. To increase the possibilities of redundancy with a given number of redundancy columns without, causing too much space near the memory zone to be occupied by complicated multiplexers, the address AP used to select a single amplifier for each contact is used also to select one group of memories among several groups (as many groups as there are amplifiers per contact) in a defective address storage register. Only the defective addresses of this group are applied to a comparator used to detect whether a defective column address is received by the memory. A correlation is thus set up between the place where the defective column is located and the place where the redundancy column, which will be used to replace it, is located. This correlation results from the simultaneous selection by AP of a group of amplifiers and of a group of defective column addresses connected to these amplifiers.