A method of controlling an elevator installation having a plurality of cars in a building with floors subdivided into several zones wherein travel orders are allocated to the cars. There is no allocation to an elevator car, which has just been allocated a travel order out of or into one of the zones,...http://www.google.de/patents/US20040144599?utm_source=gb-gplus-sharePatent US20040144599 - Method of and device for controlling an elevator installation with zonal control
