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. 17, 1999
Filed:
Nov. 04, 1997
Applicant:
Inventors:
Adriano Roganti, Margate, FL (US);
Thomas Wille, Lake Worth, FL (US);
Ronald Bruce Smith, Wellington, FL (US);
Jose Platon Basco, Wellington, FL (US);
Assignee:
AIWA/Raid Technlogy,, , DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
710 25 ; 710129 ;
Abstract
The present invention provides a method and apparatus whereby a single engine can manage multiple DMA queues and related functions for a mass storage subsystem such as a RAID array. By operating the engine at a suitably high clock rate, the key buses may be time multiplexed such that each bus operates at substantially its optimum frequency to maintain high efficiency of data throughput. To improve performance further, the DMA addressing function is allocated additional phases whenever the remaining buses have not requested access to the RAID engine.