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:
Feb. 08, 2005
Filed:
Sep. 24, 2001
Giuseppe Bosisio, Sesto San Giovanni, IT;
Daniele Zanzottera, Busto Garolfo, IT;
Giuseppe Bosisio, Sesto San Giovanni, IT;
Daniele Zanzottera, Busto Garolfo, IT;
Bull S.A., Louveciennes, FR;
Abstract
A method of transferring data in a processing system comprising a shared memory for storing data blocks, a plurality of processors, at least one of the processors having a cache memory for the data blocks, a plurality of data buses to each one at least one processor is connected, cross-bar for selectively connecting the data buses and the shared memory therebetween; the method comprises the steps of requesting the reading of a data block from the shared memory by a requesting processor, if the requested data block is present in modified form in the cache memory of an intervening processor, requesting an access to the corresponding data bus by the intervening processor, granting the access to the intervening processor, and to any other data bus available to the cross-bar, and sending the modified data block onto the data bus corresponding to the intervening processor and then onto the other data buses available.