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:
Apr. 10, 1984
Filed:
Oct. 21, 1981
Applicant:
Inventors:
Ernst H Dummermuth, Chesterland, OH (US);
Daniel J Galdun, Huntsburg, OH (US);
Raymond A Grudowski, South Euclid, OH (US);
Daniel L Stewart, Parma, OH (US);
Assignee:
Allen-Bradley Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364900 ;
Abstract
A programmable controller is formed by connecting separate functional modules to a common backplane bus. A bus arbitration scheme and a message handling technique are disclosed to tightly couple the functional modules together to form an efficient programmable controller. A number of improvements to the CPU module and I/O scanner module are disclosed to further improve the performance of the resulting system.