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:
Oct. 23, 1984
Filed:
Jun. 16, 1982
Philip M Ryan, Hopewell Junction, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An online system is disclosed for mapping errors into an error map as data is transferred between a CPU and a relatively large fault tolerant semiconductor memory system without interfering with the normal use of the memory. The error mapping system permits a fault alignment exclusion mechanism to develop permute vectors which realign pair faults that were located at the same memory address. Having an up-to-date fault map which reflects the current error status of the memory when it is online and which reflects errors based on user data patterns greatly enhances the memory system and facilitates fault alignment exclusion efficiency.