Apparatus and method for acoustic command input to an...

Data processing: speech signal processing – linguistics – language – Speech signal processing – Application

Reexamination Certificate

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Details

C187S380000

Reexamination Certificate

active

06223160

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention relates to an input apparatus and a method for acoustic command input to an elevator installation with an elevator control consisting of a unit for the reception and conversion of the acoustic commands and a display unit for the visualization of the acoustic command input.
There has become known from the U.S. Pat. No. 5,255,341, an elevator installation in which the travel commands to the floors can be input acoustically. A microphone and indicator lamps for the acoustically input travel commands are arranged in the proximity of the elevator entrance. So that speech recognition can be guaranteed, a distance sensor detects the presence of an elevator user within a specific distance from the microphone. The correct distance from the microphone is indicated to the elevator user by means of check lamps. The travel command acoustically communicated to the system by the elevator user is evaluated by a speech recognition unit and converted into an electrical signal corresponding to the desired floor and visualized at the indicator lamps. The travel commands can also be input manually by means of call buttons.
A disadvantage of the known equipment resides in the fact that the acoustic travel command input is possible only in the proximity of the elevator installation and only within a specific distance from the elevator entrance. The travel command input must be dealt with at just the place where the most interfering noise caused by the voices of the other elevator users arises. Erroneous evaluations of the speech recognition unit and thus an inadequate efficiency of the elevator installation are the consequence.
SUMMARY OF THE INVENTION
The present invention concerns a portable input apparatus that fulfills the objects of avoiding the disadvantages of the known equipment and of creating an apparatus that enables a separation in terms of time and place of a call input from the elevator installation.
The advantages achieved by the input apparatus according to the present invention are essentially that the elevator user can deal with the input of his travel destination in advance and remotely from the elevator installation. The elevator user can give his travel wish in a private environment and make it known to the elevator system in due course. He no longer needs to worry about having to input the call in front of a crowd in the hall or in the elevator car. It is further advantageous that the elevator installation can operate more efficiently, because it no longer has to wait for the manual input of travel commands claiming much time for input. It is furthermore advantageous that an individual checking of the elevator user is possible, because each elevator user has his personal input apparatus. Moreover, individual instructions, for example for the use of another elevator or an escalator, can be given to the owner of the portable input apparatus. Travel destinations can also be input in concepts synonymous to numbers. For example, the parking floor, which usually has to be selected by “−2”, can be acoustically selected by the word “car”. The input apparatus can also be equipped with further functions, such as, for example, telephone, pager or communication with the coffee machine. Furthermore, individual data of the user, such as, for example, speech, access authorization to specific floors, or restrictions, can be assigned to the apparatus.


REFERENCES:
patent: 4590604 (1986-05-01), Feilchenfeld
patent: 4979594 (1990-12-01), Begle et al.
patent: 5255341 (1993-10-01), Nakajima
patent: 5602963 (1997-02-01), Bissonnette et al.
patent: 5689094 (1997-11-01), Friedli et al.
patent: 2156339 (1996-01-01), None
patent: 33 35 157 (1985-04-01), None
patent: 0 699 617 (1996-03-01), None

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