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. 11, 1991
Filed:
Sep. 21, 1982
Applicant:
Inventors:
Anthony M Federico, West Webster, NY (US);
Ronald A Ippolito, Rochester, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ; 3642304 ; 364230 ; 3642651 ; 364265 ; 3642654 ; 371 167 ; 371 291 ;
Abstract
The present invention is to designate one of the processors in a multiprocessor control as the master processor. All the other processors report their faults to the master processor. When it receives a fault message, the master processor records the type of fault and the source of the message in suitable memory locations. The master will also time stamp the fault message to identify the first fault message. Finally, the master will transmit a message to itself to verify that the master's communication channel is valid to verify whether the master processor itself or one of the remote processors is faulty.