Method for transmitting messages in an elevator group control sy

Details Method for transmitting messages in an elevator group control sy Method for transmitting messages in an elevator group control sy

1997-10-17

1999-08-03

Nappi, Robert E.

Elevator, industrial lift truck, or stationary lift for vehicle

Having computer control of elevator

187391, B66B 128

Patent

active

059328517

ABSTRACT:
The method for transmitting messages in an elevator communication system selects a set of elevator cars from a plurality of elevator cars in the elevator system, and compares present data for the selected set of elevator cars with data stored in a single table. The present data which differs from the data stored in the table is designated as changed or differing data. This differing data is transmitted to the plurality of elevator cars. Along with the differing data, retransmission data ordered according to the priority associated therewith is also transmitted along with the differing data. In this manner, a group communication controller controls the communication for several elevator cars.

REFERENCES:
patent: 3851734 (1974-12-01), Sackin
patent: 5019960 (1991-05-01), Ando et al.
patent: 5202540 (1993-04-01), Auer et al.
patent: 5387769 (1995-02-01), Kupersmith et al.

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