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:
Oct. 18, 1983
Filed:
Jan. 12, 1981
Mitsubishi Denki Kabushiki Kaisha, Aichi, JP;
Abstract
A control device for an elevator system in which an operating program for the elevator can readily be changed by the addition of a read-only memory containing only instructions needed for modifying control signals computed by a standard program. To the standard computerized control device of an elevator system is added a further read-only memory and a further random access memory. The read-only memory stores programs which modify the computational results produced as a result of executing the standard programs. The computational results produced by executing the standard programs are stored in the added random access memory, there modified as a result of executing the special program stored in the added read-only memory, and then transferred to another random access memory for transfer to the devices which perform the direct control of the elevator cage of the system.