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:
Aug. 19, 1986
Filed:
Nov. 14, 1983
David A Greig, Menlo Park, CA (US);
David L Hinders, Cupertino, CA (US);
William R Goodman, Palo Alto, CA (US);
Tandem Computers Incorporated, Cupertino, CA (US);
Abstract
The present invention relates to a system for controlling multiple communications lines, so that a computer system can operate with a single component failure. Two processors are used to control two communications controllers and each of the controllers control up to 15 line controllers. Each line controller has two ports and each port is connected to a communications controller thereby providing two communications paths to each processor. Redundant power supplies are also used to provide single failure fault-tolerance. A downloadable microprocessor board is provided in combination with, but separate from, an interface board that is designed to meet various communication format specifications and the line controller comprises the two boards.