Cordless telephone system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 28, 1987
Grant Date -
N/A
app pub date -
May 28, 1986
filing date -
May 30, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cordless telephone system includes a plurality of radiophones, each having a first transmitter and a first receiver of different transmission and reception frequencies; and a radio station, wired to a telephone line. The radio station comprises a second receiver and a second transmitter, each having the same reception and transmission frequencies as those of the radiophones; switching means for connecting an input terminal of the second transmitter and an output terminal of the second receiver to the telephone line, or for connecting the input terminal of the second transmitter and the output terminal of the second receiver; and control means for receiving a control signal from the second receiver and supplying a control signal to the switching means. Half duplex communication can be performed between the radiophones.
First Claim
Family
International Classification(s)
Cited Art Landscape
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