Patent ID: 6202799
Filing Date: 2001-03-20
Classification: B66B

Abstract:
In a system having at least one elevator serving a plurality of floors of a building, said system including cards carried by passengers, said cards having means for entering destination floor numbers and displays for displaying destination floor numbers, and in which an elevator control system communicates with the cards by means of electromagnetic messages, including messages bearing a unique passenger identification number (ID), the method of determining passenger destination floors comprising:(a) keeping a record of destination floors for each passenger;(b) in response to a passenger entering in one of said cards the floor number of a new destination, designating said destination as ""fixed"";(c) in response to communication between said card and one of a plurality of first transponders located a first distance from the access to an elevator, entering a hall call;(d) when a car arrives in response to said hall call, entering a car call for said destination and designating said destination as ""unfixed""; and(e) in response to communication between said card and one of a plurality of second transponders located a second distance from the access to an elevator alternativelyif said destination is designated as ""fixed"", causing said card to display said destination, orif said destination is designated as ""unfixed"", determining, from said record and the floor of said second transponder, a next-trip destination floor for said passenger.