Wireless telephone equipment operating as a cordless and cellula

Details Wireless telephone equipment operating as a cordless and cellula Wireless telephone equipment operating as a cordless and cellula

1993-04-20

2000-07-04

Bost, Dwayne D.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455102, 455103, 455553, H04Q 720

Patent

active

060851090

ABSTRACT:
A wireless telephone equipment is provided with a microphone for receiving voice of a user and changing the voice to audio signals of an outgoing call, a cellular transmitter for modulating a carrier with the audio signals in a cellular communication, a cellular band-pass filter for filtering the carrier modulated in the cellular transmitter, a cordless transmitter for modulating a carrier with the audio signals in a cordless communication, a cordless band-pass filter for filtering the carrier modulated in the cordless transmitter, an antenna for transmitting the carrier filtered in the cellular or cordless band-pass filter and receiving a modulated signal, a band-pass filter for filtering the modulated signal, a cellular-cordless receiver for demodulating the modulated signal filtered to reproduce audio signals of an incoming call in the cellular communication and cordless communication, and a speaker for receiving the audio signals of the incoming call and giving voice. In cases where the equipment is positioned within call range of a cordless base station, the cordless communication is performed.

REFERENCES:
patent: 4618997 (1986-10-01), Imazeki et al.
patent: 4776040 (1988-10-01), Ichikawa et al.
patent: 4989230 (1991-01-01), Giling et al.
patent: 5144258 (1992-09-01), Nakanishi et al.
patent: 5196806 (1993-03-01), Ichihara
patent: 5212684 (1993-05-01), MacNamee et al.
patent: 5260988 (1993-11-01), Schellinger et al.
patent: 5297203 (1994-03-01), Rose et al.

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