Communications: electrical – Systems – Call station
Patent
1975-03-27
1977-07-12
Trafton, David L.
Communications: electrical
Systems
Call station
340324AD, G01D 712, G06K 1520
Patent
active
040357864
ABSTRACT:
An operation state monitoring apparatus for monitoring an operation state of a controlled object is disclosed. The apparatus compares actual operation state data of the controlled object with reference operation state data of the controlled object read out from a reference operation state data memory and sets desirable data selected from the actual operation state data to the reference operation state data memory as the reference operation state data.
REFERENCES:
patent: 3234543 (1966-02-01), Thompson et al.
patent: 3324458 (1967-06-01), MacArthur
patent: 3406387 (1968-10-01), Werme
patent: 3469252 (1969-09-01), Bet
patent: 3662373 (1972-05-01), Schumann
patent: 3745407 (1973-07-01), Day
patent: 3750134 (1973-07-01), Weisend
patent: 3818474 (1974-06-01), Kurner et al.
Matsumura Masaji
Morimoto Katsuhide
Yamauchi Nobuharu
Mitsubishi Denki & Kabushiki Kaisha
Trafton David L.
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