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:
Jun. 14, 1994
Filed:
May. 28, 1992
Eric C Fromm, Eau Claire, WI (US);
Michael L Anderson, Eau Claire, WI (US);
Lonnie R Heidtke, Chippewa Falls, WI (US);
Cray Research, Inc., Eagan, MN (US);
Abstract
An improved solid state storage device (SSD) with memory organized into a plurality of groups, each group including a plurality of ranks, and each rank having at least two banks sharing a bidirectional data bus. A matrix reorder circuit is used to distribute data across individual memory components in a way that prevents multibit uncorrectable or undetectable errors due to the failure of a single memory component. The matrix reorder circuit is used for both reading and writing data, and operates on a stream of pipelined data of arbitrary length. According to another aspect of this invention, a flaw map and additional hot spare memory are used to electrically replace failing memory components in the According to another aspect of this invention, memory in a bank is accessed during one half of a reference cycle and refreshed during the second half of the reference cycle, each bank being 180 degrees out of phase with the other so that a read or write is performed on one bank while a memory refresh is performed on the other bank.