Portable radio telephone used with an adaptor unit having a hand-free circuit
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United States of America Patent
Stats
-
Nov 22, 1994
Grant Date -
N/A
app pub date -
Jan 9, 1992
filing date -
Jan 11, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A portable radio unit used with an adaptor unit having a hand-free circuit is disclosed. The hand-free circuit is activated in response to a contact between a contact-type connector of the portable radio unit and a contact-type connector of the adaptor unit in the event that the portable radio unit being in a communication state is attached to the adapter unit. Power supply to the hand-free circuit is also initiated in response to the contact of the connectors.
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Family
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