Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2005-01-25
2005-01-25
Corsaro, Nick (Department: 2684)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S569200, C455S557000, C455S550100, C455S099000, C455S345000
Reexamination Certificate
active
06847833
ABSTRACT:
A hand free device is commonly shared by a plurality of communication devices, and more particularly to a hand free device which can be used by a plurality of communication devices simultaneously. Such a hand free device includes a microprocessor, more than one I/O interfaces, a multiplexer control unit, more than one multiplexers, a voice processing unit, a speaker amplifying and control unit, a microphone amplifying circuit, a dialing unit, a charging and power supply unit and an artificial interface. Such a hand free device can be simultaneously coupled to multiple communication devices and allows the same to be operable at the same time.
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patent: 6081724 (2000-06-01), Wilson
patent: 6266542 (2001-07-01), Stern et al.
patent: 6349223 (2002-02-01), Chen
patent: 6411823 (2002-06-01), Chen
patent: 19715596 (1998-10-01), None
patent: 10212571 (2003-09-01), None
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patent: 1119160 (2001-01-01), None
Corsaro Nick
E-Lead Electronic Co. Ltd.
Sharma Sujatha
Troxell Law Office PLLC
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