Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-09-06
2005-09-06
Tran, CongVan (Department: 2683)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S556100, C381S072000, C379S142130
Reexamination Certificate
active
06941161
ABSTRACT:
Improper microphone position and speech level on a telephone headset is sensed by comparison of a speech envelope to multiple signal threshold levels. A first threshold is used to determine whether a headset user is talking. A second threshold is used to determine whether a signal level at the microphone is sufficiently strong for proper communication. An indicator is activated when the user is talking and the signal level is too weak. Typically, a weak signal is caused by a mispositioned microphone or a user talking too softly.
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Bernardi Robert J.
Bobisuthi James F.
Burson Steven F.
Gollbach Lawrence W.
Woo Allen
Hsieh Peter
Plantronics, Inc
Tran CongVan
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