Portable telephone set with automatic sound generation when it i

Details Portable telephone set with automatic sound generation when it i Portable telephone set with automatic sound generation when it i

1995-08-23

1998-11-03

Bost, Dwayne D.

Telecommunications

Radiotelephone system

Including public cordless extension system

455421, 455462, 455567, H04Q 724

Patent

active

058323864

ABSTRACT:
A portable telecommunications apparatus which is capable of communicating with a destination communication apparatus, such as a public radio base station, through a radio telecommunications channel, including: a detector which detects if the portable telecommunication apparatus has entered a service area of the destination communication apparatus. A sound generator notifies a user by a sound when it is detected that the portable telecommunications apparatus has entered the service area of the destination communication apparatus, and a sounding mode setting device which sets a sounding mode in which the sound is generated by the sound generator when it is detected that the portable telecommunication apparatus has entered the service area of the destination communication apparatus. The portable telecommunication apparatus, which may be a portable telephone set, is provided with a setting device for setting a telephone number and a photo-sensor for sensing light so that the portable telecommunications apparatus calls the telephone number set by the setting device when the photo-sensor detects light within a predetermined period of time after the detection of when the portable telecommunications apparatus is located in the service area of a destination communication apparatus

REFERENCES:
patent: 4748655 (1988-05-01), Thrower et al.
patent: 4853951 (1989-08-01), Bauer
patent: 4881259 (1989-11-01), Scordato
patent: 4989230 (1991-01-01), Gillig et al.
patent: 4996715 (1991-02-01), Marui
patent: 5127042 (1992-06-01), Gillig
patent: 5210785 (1993-05-01), Sato et al.
patent: 5233641 (1993-08-01), Maeda
patent: 5259021 (1993-11-01), Antilla
patent: 5379339 (1995-01-01), Sakamoto

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