Improvements in or relating to memories and their manufacture.

摘要

Subject-matter of this invention is a system for use of semiconductor dynamic memories having faulty locations, wherein such memories are preliminarily organized as memory banks in order to form an elementary information word and subsequently all homologous address locations which contain errors are identified so as to obtain a map which is stored in a not-volatile memory (OTP) associated to the memory banks, thereby creating a transcoding table: and wherein the external user who desires to retrieve the data contained in the memory blocks will have access to said not-volatile memory (OTP) by using successive memory (logic) addresses supplied by an intelligent section of the system and will receive (material) transcoded addressed therefrom, which will enable him to have direct and immediate access to said memory blocks. In the system according to this invention, aiming at increasing the number of locations wherein it is possible to store information, by using also somewhat faulty regions, techniques designed for application to error correction are exploited. <IMAGE>