Radio telephone apparatus

Details Radio telephone apparatus Radio telephone apparatus

1991-11-21

1994-08-02

Chin, Stephen

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 63, 379 67, 379 88, 455 89, 455 90, H04M 1100, H04M 164, H04B 138

Patent

active

053352610

ABSTRACT:
A radio telephone comprising a main body enclosing a transmitting circuit and a receiving circuit; a handset removably mounted to the main body, the handset including a microphone electrically connected to the transmitting circuit and a speaker electrically connected to the receiving circuit; a voice recognition circuit for recognizing a voice input to the microphone and for performing a dialing operation based on the voice. An extension module is removably mounted on the main body. A mute switch, which also enables the voice recognition circuit, is removably connected to the main body, or to an extension module removably mounted on the main body, thus adding to the portability of the radio telephone.

REFERENCES:
patent: 4598171 (1986-07-01), Hanscom et al.
patent: 4945557 (1990-07-01), Kaneuchi et al.
patent: 4959850 (1990-09-01), Marui
patent: 4961212 (1990-10-01), Marui et al.
patent: 5029236 (1991-07-01), Yasuda et al.
patent: 5042063 (1991-08-01), Sakanishi et al.
patent: 5148471 (1952-09-01), Matroka et al.

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