Computer control system for selecting a desired control program

Details Computer control system for selecting a desired control program Computer control system for selecting a desired control program

1981-01-12

1983-10-18

Springborn, Harvey E.

Boots, shoes, and leggings

187 29R, G06F 922, G06F 1306, B66B 118

Patent

active

044109598

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.

REFERENCES:
patent: 3686639 (1972-08-01), Fletcher
patent: 4021783 (1977-05-01), Highberger
patent: 4288859 (1981-09-01), Zeindler et al.
patent: 4368518 (1983-01-01), Torazono et al.

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