Communication apparatus having improved switching line connection between different signal paths
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 1, 1992
Grant Date -
N/A
app pub date -
Dec 3, 1990
filing date -
Dec 14, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A communication apparatus comprises a switch to selectively connect a line to a speech communication path or a data communication path, signal receiving circuits connected to those two communication paths, a signal detection circuit for detecting a predetermined signal from an output of the signal receiving circuit, and a control circuit for modifying a detection criterion of the signal detection circuit in accordance with a line connection status of the switch.
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