Mobile communication system and mobile phone set having analog/

Details Mobile communication system and mobile phone set having analog/ Mobile communication system and mobile phone set having analog/

1993-06-22

1998-12-08

Congle, Thanh

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

455422, 455552, 455575, 455 74, H04B 726

Patent

active

058483535

ABSTRACT:
A mobile phone set includes a base unit and at least one handset belonging to the base unit. In the base unit, a receiving section 11 receives a first modulated wave S.sub.1 which is a digital modulated wave from TX 3, and a demodulating section 12 demodulates the received wave, and further a decoding section 13 decodes the demodulated wave. Further, a detecting section 17 detects the demodulated wave. Further, a detecting section 17 detects that the decoded signal is of a calling signal for the handsets 2-1 and 2-2 associated with the base unit, and after the detection a controlling section 25 instructs a D/A converting section 14 to D/a convert a digital signal decoded by the decoding section 13 to an analog signal and a modulating section 15 to modulate the analog signal. A transmitting section 16 transmits a second modulated wave S.sub.2 as the analog modulated wave to the handset 2-1 or 2-2. Further, in the base unit 1, a receiving section 18 receives a third modulated wave S.sub.3 as the analog modulated wave from the handset 2-1 for example, and a demodulating section 19 demodulates the received wave.

REFERENCES:
patent: 4539706 (1985-09-01), Mears et al.
patent: 4659878 (1987-04-01), Gilbert M. Dinkins
patent: 5228074 (1993-07-01), Mizikovsky
patent: 5276686 (1994-01-01), Ito

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