Telephone handset for hands-free use in an auto mobile

Details Telephone handset for hands-free use in an auto mobile Telephone handset for hands-free use in an auto mobile

1995-11-03

1998-05-05

MacDonald, Allen R.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

379420, H04M 1100, H04Q 700

Patent

active

057490570

ABSTRACT:
A portable telephone which solves problems conventionally associated with using a portable telephone together with a hands-free accessory is disclosed. When the portable telephone is being used on its own and a microphone arm thereof is in a home position, the portable telephone can be put in a waiting state wherein it can receive incoming calls. When the portable telephone is being used on its own and the microphone arm is in a pulled-out position, telephone conversations can be had using a microphone and a speaker built into the portable telephone. When the portable telephone is connected to a hands-free accessory and the microphone arm is in its home position, conversations can be had in a hands-free mode using a microphone and a speaker connected to the hands-free accessory. When the portable telephone is connected to a hands-free accessory and the microphone arm is in its pulled-out position, conversations can be had in a normal mode using the microphone and the speaker built into the portable telephone even though the portable telephone is connected to the hands-free accessory. As a result, no special key for mode changeover between the hands-free mode and the normal mode need be provided either on the portable telephone side or on the hands-free accessory side, nor is it necessary to perform a two-step key pressing operation to effect mode changeover.

REFERENCES:
patent: 4056696 (1977-11-01), Meyerle et al.
patent: 4878237 (1989-10-01), Cianflone
patent: 5212722 (1993-05-01), Murata
patent: 5261121 (1993-11-01), Hashimoto
patent: 5282246 (1994-01-01), Yang
patent: 5490213 (1996-02-01), Huang
patent: 5504812 (1996-04-01), Vangarde
patent: 5583919 (1996-12-01), Talvard et al.
patent: 5586183 (1996-12-01), Marcus et al.
patent: 5589947 (1996-12-01), Sato et al.
patent: 5590417 (1996-12-01), Rydbeck
patent: 5596638 (1997-01-01), Paterson et al.
patent: 5642402 (1997-06-01), Vilmi
patent: 5659887 (1997-08-01), Ooe

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