Cordless phone system capable of scrambling communication signal

Details Cordless phone system capable of scrambling communication signal Cordless phone system capable of scrambling communication signal

1992-10-30

1995-02-21

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 9, 380 38, H04L 900

Patent

active

053923545

ABSTRACT:
A cordless phone system includes a first cordless phone and a second cordless phone which are coupled to each other by a network, the first cordless phone being formed of a first personal station and a first base station, the second cordless phone being formed of a second personal station and a second base station. The cordless phone includes a scrambler, provided in the first personal station, for scrambling communication signals in a predetermined scrambling manner, the communication signals scrambled by the scrambler being transmitted from the first personal station to the first base station in radio, a first relay circuit, provided in the first base station, for receiving the communication signals from the first personal station and for transmitting the communication signals, without disscrambling, to the second base station via the network, a second relay circuit, provided in the second base station, for receiving the communication signals from the first base station and for transmitting the communication signals, without scrambling, to the second personal station in radio; and a disscrambler, provided in the second personal station, for disscrambling the communication signals transmitted from the second base station in radio in a predetermined disscrambling manner corresponding to the scrambling manner in the first personal station, so that original communication signals are restored.

REFERENCES:
patent: 4920567 (1990-04-01), Malek
patent: 5073932 (1991-12-01), Yossifor et al.
patent: 5077790 (1991-12-01), D'Amico et al.
patent: 5091941 (1992-02-01), Needle et al.
patent: 5140635 (1992-08-01), Houghton et al.
patent: 5168522 (1992-12-01), Simanis et al.
patent: 5247576 (1993-12-01), Bright

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