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:
Aug. 10, 1993
Filed:
Mar. 02, 1990
Pierre Bacot, Chaville, FR;
Guy Magnaud, Maule, FR;
Jean-Jacques Pairault, Boulogne Billancourt, FR;
Bull S. A., Paris, FR;
Abstract
The invention relates to the field of data processing systems and provides a method and system to enable replacement of memory modules (MU.sub.i) connected to a bus (MB) without interrupting the functioning of the system, wherein for any writing request addressed to a module to be replaced (MU.sub.i), this writing request is executed simultaneously and at the same address by the module to be replaced (MU.sub.i) and by a replacement module (MU.sub.r), and for any reading request addressed to the module to be replaced (MU.sub.i), only the module to be replaced (MU.sub.i) is authorized to execute this reading request. Next, a recopying process is started which includes sending reading and rewriting requests to a set of addresses covering the entirety of the memory space of the module to be replaced (MU.sub.i).