Voice-recognition elevator security system

Details Voice-recognition elevator security system Voice-recognition elevator security system

1982-08-26

1985-08-06

Kemeny, E. S. Matt

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

3645135, 34082531, G10L 100

Patent

active

045340560

ABSTRACT:
A voice-controlled elevator security system. Access to an elevator system servicing a plurality of landings of a structure is controlled by comparing a voice signal of a potential user of the elevator system with stored voice signals of all authorized users. The comparison is accomplished by first digitizing the potential user's voice signal and comparing it, on a bit-by-bit basis, with a digital representation of the voice signals of all authorized users. Various criteria can be established for determining the number of binary bits that must agree to conclude that the potential user is an authorized user. Once this determination has been made, the authorized user can initiate car call signals for those landings to which the authorized user is permitted access.

REFERENCES:
patent: 3388376 (1968-06-01), Magee
patent: 4341288 (1982-07-01), Bass
patent: 4449189 (1984-05-01), Feix et al.

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