Wireless telephone equipment operating as a cordless and cellular telephone
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 4, 2000
Grant Date -
N/A
app pub date -
Apr 20, 1993
filing date -
Apr 30, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
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