A method and an apparatus for elevator group control, capable of improving the transport efficiency without severely lowering the overall quality of service, even when the traffic demand to a particular floor sharply increased in a particular period of time. In the apparatus, the elevator cars of the...http://www.google.de/patents/US5168135?utm_source=gb-gplus-sharePatent US5168135 - Allocation of elevator car to floors including car direction reversals which improve service
