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:
Dec. 28, 1993
Filed:
Nov. 13, 1991
Applicant:
Inventors:
Douglas J Littlejohn, Sunnyvale, CA (US);
John Golini, Los Gatos, CA (US);
Assignee:
Quest Technologies, Inc., Sunnyvale, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
318562 ; 318139 ; 318600 ;
Abstract
The present invention imports network communication concepts into a motor and/or motion control system. The motor and/or motion control system is divided into various modules. A preferred configuration includes a motor drive control module, a user command module, and a master control module. The modules are interconnected by a simple hardware bus, such as an RS-485 bus. Communication between the modules is accomplished using a time division protocol.