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:
Sep. 20, 1988
Filed:
Nov. 14, 1986
Applicant:
Inventor:
Stanley M Nissen, Reading, MA (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
An arrangement to couple at least one I/O device to the main bus between a CPU and a main memory in a digital computer system is shown to include a random access memory made up of a dedicated part of the main memory and control circuitry to allow access between addresses in the random access memory and either the CPU or the at least one I/O device, such circuitry being arranged to give priority of access to the CPU except when data is actually being transferred from the I/O device and the random access memory.