Data transmission system for use in an air conditioning control

Details Data transmission system for use in an air conditioning control Data transmission system for use in an air conditioning control

1982-12-20

1986-03-04

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

165 22, 236 1B, H04Q 900, F24F 300

Patent

active

045742839

ABSTRACT:
In a data transmission system having a main controller for transmitting polling messages in a polling sequence and a plurality of terminal controllers responsive to a polling message to transmit data to the main controller, the finally polled terminal controller transmitting an END code for informing the main controller of the end of data transmission.

REFERENCES:
patent: 4047159 (1977-09-01), Boudry
patent: 4090248 (1978-05-01), Swanson et al.
patent: 4199662 (1980-04-01), Lowe, Jr.
patent: 4227178 (1980-10-01), Gergaud et al.
patent: 4284126 (1981-08-01), Dawson
patent: 4438434 (1984-03-01), Wason
patent: 4468655 (1984-08-01), Iwata

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