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. 27, 1987
Filed:
Jan. 03, 1986
Applicant:
Inventors:
Robert J Abrant, Villa Park, IL (US);
Michael D Martys, Pittsfield, MA (US);
George K Tarleton, Itasca, IL (US);
Assignee:
GTE Communication Systems Corporation, Northlake, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G05B / ; G05B / ;
U.S. Cl.
CPC ...
364200 ; 364133 ; 371-9 ;
Abstract
A synchronizing circuit synchronizes the asynchronous ready signals for two separate microprocessor subsystems that are running synchronously as part of a fault tolerant computer system. Duplicated synchronization circuits, confined in a master-slave arrangement, are utilized with the duplicate microprocessors. Storage and gating circuitry are used to provide the precise timing signals required for such synchronization.