Data transmission system
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United States of America Patent
Stats
-
Sep 21, 1982
Grant Date -
N/A
app pub date -
Jun 9, 1980
filing date -
Jun 15, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a system for communicating data between two stations interconnected by way of a telephone line, a data transmission system wherein at least one of the stations includes a telephone set normally connected to said telephone line, a line changer, a data transmitter and a signal detector. When another station is called through the telephone set and a predetermined signal transmitted from said another station is detected by the signal detector, the line changer switches the telephone line from the telephone set to the data transmitter.
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