Portable telephone with speakerphone

Details Portable telephone with speakerphone Portable telephone with speakerphone

1995-03-09

1997-08-05

Chiang, Jack K.

Telephonic communications

Terminal

Having loudspeaking conversation capability

379446, 379454, 379455, H04M 100

Patent

active

056550170

ABSTRACT:
A portable telephone includes a telephone body; a circuit mounted in the telephone body for receiving a signal and for supplying a signal for transmission; and a bass reflex speaker connected with the telephone body and the circuit for radiating an audio signal therefrom in response to the transmitted signal, the bass reflex speaker including a housing connected to the telephone body, an opening in the housing, a speaker mounted in the opening of the housing and connected to the circuit for radiating an audio signal outwardly of the housing in response to the received signal, a tuned port in the housing for radiating a back wave audio signal of the speaker therethrough, a tube in the housing and connected with the tuned port for enhancing tuning of the tuned port, a pressure switch for activating the bass reflex speaker to radiate the audio signal when the telephone body is positioned on a surface in an upright position, and a volume control connected to the circuit and which controls a volume of the audio signal radiated from the bass reflex speaker.

REFERENCES:
patent: 5367556 (1994-11-01), Marui et al.
patent: 5369701 (1994-11-01), McAteer et al.

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