Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2006-01-17
2006-01-17
Trinh, Sonny (Department: 2687)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S550100, C455S073000, C455S570000, C455S296000, C455S501000, C379S419000, C379S420040, C379S440000, C381S077000, C381S079000
Reexamination Certificate
active
06987992
ABSTRACT:
A multiple wireless microphone speakerphone system includes one or more wireless microphones. The wireless microphones accept speech and transmit the speech to receivers, one receiver corresponding to each wireless microphone. Audio processing and acoustic echo cancellation (AEC) are performed on the received speech signals. A signal handling unit generates an audio signal after echo cancellation. The generated audio signal is transmitted to a far end to be played through, for example, a speaker or an ear piece.
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GB Search Report dated May 12, 2004.
Hundal Sukhdeep S.
Pothiboon Supajet Guy
Nguyen Khai
Pillsbury Winthrop Shaw & Pittman LLP
Trinh Sonny
VTech Telecommunications Limited
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