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. 19, 1989
Filed:
Jun. 15, 1987
Gary D Anderson, Saugerties, NY (US);
Gerald J Hladik, Raleigh, NC (US);
Lawrence G Mosher, Rhinebeck, NY (US);
Raymond L Ricci, Kingston, NY (US);
Henry Yeh, Kingston, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system for interconnecting an intelligent controller to a plurality of terminal devices includes a software module, a microprocessor and a device adapter having a plurality of output ports. The system operates under the control of said software module. When the system is powered up, a status for the output ports is assumed and tested under control of a configuration register. If the test is successful, the terminal port remains in that state; if unsuccessful, the state of the terminal port is reversed. The system permits an exchange of operating modes in the terminal devices associated with one port without adversely affecting operation of the remaining ports in the system.