Elevator communication controller

Details Elevator communication controller Elevator communication controller

1986-02-14

1987-08-04

Shoop, Jr., William M.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187130, 364178, B66B 114, G06F 1520

Patent

active

046839895

ABSTRACT:
An addressable elevator communication controller which, when addressed by a valid input message, prepares a return message and has its return data interface enabled for one message. The return message is automatically clocked out of the communication controller via the enabled return data interface as the next input message is clocked into the controller, regardless of whether the incoming message is addressed to this communication controller or to another communication controller. The communication controller is operable in one of two completely different modes, simply by controlling the logic level of one input pin. Input messages, as well as message clocking input pulses, are screened through digital correlators which discriminate actual signals from line noise.

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patent: 3828892 (1974-08-01), Winkler et al.
patent: 3841443 (1974-10-01), Booker, Jr.
patent: 3851735 (1974-12-01), Winkler et al.
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patent: 4415968 (1983-11-01), Maeda et al.
patent: 4462081 (1984-07-01), Lehan
patent: 4473133 (1984-09-01), Enriquez et al.
patent: 4497391 (1985-02-01), Mendelsohn et al.
patent: 4555689 (1985-11-01), Brick et al.

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