Data communication apparatus
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United States of America Patent
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-
Oct 19, 1993
Grant Date -
N/A
app pub date -
Apr 25, 1991
filing date -
Apr 27, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data communication apparatus operates in a first switching mode in order to switch over between data communication and speech communication depending upon whether or not a signal indicating data communication mode is received within a predetermined period of time; a as well as second switching mode which switches over between data communication and speech communication depending upon whether or not a response signal to a procedure signal is received within a predetermined period of time. The apparatus has a detector that detects a state of the apparatus, and it selects one of the first and second switching modes.
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