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:
Nov. 27, 1990
Filed:
Jun. 28, 1984
Applicant:
Inventors:
William R Verbanets, Jr, Plum Borough, PA (US);
Theodore H York, Raleigh, NC (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364900 ; 3649269 ; 3649328 ; 3649393 ; 3649235 ;
Abstract
In a communication and control system, an improved interface between a digital IC and its associated microcomputer is provided wherein a serial shift register in the digital IC is used to store the message bits of a received message and control of the shift register is transferred to the associated microcomputer as soon as the interface is set up so that data stored in the register is not overwritten by another received message. A busy signal is also supplied over one line of the interface only during periods when the digital IC is actually receiving or transmitting a message.