Portable telephone having an additional device for making extern

Details Portable telephone having an additional device for making extern Portable telephone having an additional device for making extern

1994-09-22

1996-01-23

Kuntz, Curtis

Telephonic communications

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

Including fiber optic link within telephone network

320 2, 455 90, H04Q 732

Patent

active

054870992

ABSTRACT:
The present invention relates to a portable telephone, and an object of the present invention is to provide a portable telephone and an additional device for the portable telephone capable of improving the portability of the portable telephone in the case that a power source of the portable telephone is additionally provided and the functionality of the portable telephone is extended. The additional device for the portable telephone main body having a connection function with a telephone line, can be detachably attached to a power source section, and has a power source terminal portion capable of being detachably attached to a power source terminal portion in the power source section. That is, the additional devices for the portable telephone having various functions can be prepared as options, and the selected additional device can be integrally attached to the portable telephone comprising the conventional portable telephone main body and the power source section to improve the portability. The additional devices for the portable telephone can have a power source function, a modem function, an extension function for extending the functionality of the portable telephone main body, or a card receiving mechanism.

REFERENCES:
patent: 5136229 (1992-08-01), Galvin
patent: 5249218 (1993-09-01), Sainton
patent: 5257414 (1993-10-01), Trahan et al.

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