Sound volume setting device for a portable telephone

Details Sound volume setting device for a portable telephone Sound volume setting device for a portable telephone

1996-08-08

2000-04-04

Bost, Dwayne D.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455567, 455426, H04Q 732

Patent

active

060471956

ABSTRACT:
In a sound volume setting device for a portable telephone which can exchange messages through a public base station and which can exchange messages through a home telephone as a base station, a service detector for detecting whether the portable telephone is under the service of a public base station or under the service of a base station of a home telephone is provided so as to always search the service state, and adjust the amplifications of an amplifier for a receiving speaker and an amplifier for a calling speaker automatically using an operating portion, to thereby set the volumes of a calling sound and a receiving speech sound at proper values in accordance with the service state.

REFERENCES:
patent: 5235632 (1993-08-01), Raith
patent: 5337356 (1994-08-01), Shinozaki
patent: 5448620 (1995-09-01), Gershkovich et al.
patent: 5479476 (1995-12-01), Finke-Anlauff
patent: 5606597 (1997-02-01), Newland
patent: 5778304 (1998-07-01), Grube et al.

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