Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Patent
1988-06-27
1989-12-26
Griffin, Robert L.
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
455226, 324 57N, H04B 1700
Patent
active
048903329
ABSTRACT:
An apparatus for judging the quality of mobile data communication has: (1) a unit for amplifying an incoming electric wave and detecting the strength of the received electric field; (2) a data communication judgement unit for previously setting a limit of data communication, and comparing the reference value with an output from the electric field strength detector unit (3) a visible display unit for visually displaying the received electronicfield signal when the strength of the received electric field is more than the judgment reference value; (4) a digital output terminal for outputting a digital control signal to control a modem; and (5) an audible tone generator for producing a continuous tone or an intermittent tone from a speaker to clearly inform an operator of the quality of the data communication when the strength of the received electric field is less than the judgment reference value.
REFERENCES:
patent: 4234964 (1980-11-01), Cieslak
patent: 4479255 (1984-10-01), Geesen et al.
patent: 4619002 (1986-10-01), Thro
patent: 4627103 (1986-12-01), Fukuhara
patent: 4723303 (1988-02-01), Koch
patent: 4731586 (1988-03-01), Perkins
patent: 4736453 (1988-04-01), Schloemer
Griffin Robert L.
Kuntz Curtis A.
OKI Electric Industry Co., Ltd.
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