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:
May. 25, 1976
Filed:
Aug. 05, 1974
John G Valassis, Des Plaines, IL (US);
James R Holden, Chicago, IL (US);
GTE Automatic Electric Laboratories Incorporated, Northlake, IL (US);
Abstract
A bus assigner in an electronic data processing system for selectively assigning access to a system bus to one of a plurality of microprocessors comprising a multiprocessing system. In an embodiment of the present invention, logic circuitry is provided for assigning a priority of operation to each of the microprocessors, each microprocessor having a different assigned priority. The bus assigner selectively assigns access to the sysstem bus to the microprocessor having the highest priority whenever one or more of the microprocessors requests access to the system bus. In an alternative embodiment, the bus assigner sequentially scans the microprocessors for requests for access to the system bus and assigns access to the system bus in the order in which the requests are received by the bus assigner as it scans the microprocessors.