Patent ID: 7819230

Claim:
A method of assigning a user to an elevator system with a plurality of elevators, the method comprising the steps of: providing the elevator system with at least one destination call issuing module for issuing a destination call, the destination call issuing module including at least one switch used to designate a floor of the designation call, a destination call control module to determine at least one of the elevators to serve the destination call, a plurality of acoustic signal modules to issue acoustic signals to assign the user to the determined elevator, one of the acoustic signal modules assigned to the destination call issuing module for issuing the destination call to guide the user to the destination call issuing module, the other acoustic signal modules assigned to different ones of the elevators to guide the user to communicate to the user that the determined elevator can be boarded, and an acoustic signal generating means in each acoustic signal module for generating the acoustic signals; guiding the user to the destination call issuing module by a first acoustic signal issued from the acoustic signal module of the destination call issuing module, the first acoustic signal in the form of a single-frequency signal tone with a predefined signal duration and at least one predefined signal interruption that is distinguishable to the user; permitting the user to issue the destination call by actuating the at least one switch of the destination call issuing module; determining at least one of the elevators to serve the destination call; designating the at least one elevator determined to serve the destination call by a second acoustic signal, the second acoustic signal consisting of a single single-frequency signal tone with a predefined signal duration and at least one predefined signal interruption that is distinguishable to the user; announcing to the user through the acoustic signal module of the destination call issuing module the one of the elevators determined to serve the destination call with the second acoustic signal; and announcing to the user through the acoustic signal module of the one of the elevators determined to serve the destination call with the second acoustic signal that the one of the elevators determined to serve the destination call can be boarded.