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. 05, 1993
Filed:
Mar. 19, 1990
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395200 ; 364229 ; 3642292 ; 364268 ; 3642683 ; 364D / ; 3649314 ; 3649402 ; 364944 ; 364D / ; 395575 ;
Abstract
A multiprocessor system is provided with main processors and secondary processors, and the processors are duplexed to form an active system and a standby system. A right to switch the system is given only to the main processors, and the secondary processors are operative to switch the system in accordance with the related system switching command, wherein data and control information are independently communicated between the main processors and the corresponding secondary processors belonging to the same active or standby system.