Electronic lock

Details Electronic lock Electronic lock

1992-06-30

1994-09-20

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082522, G06F 704

Patent

active

053493451

ABSTRACT:
An electronic lock system includes a key having a memory for storing a first parameter defined by a plurality of fields and a second parameter indicative of a number of the fields. A lock has a receptacle for reading the first and second parameters from the key's memory and compare circuitry for comparing respective fields of the first parameter with a third parameter stored in the lock, with the number of fields compared based on the second parameter. Access to the lock is provided responsive to the compare circuitry, such that a single key may access a predetermined set of locks. The electronic lock is capable of performing a plurality of functions. Control is provided such that permission to access the functions is configurable for each key.

REFERENCES:
patent: 4717816 (1988-01-01), Raymond et al.
patent: 4947163 (1990-08-01), Henderson et al.

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