Radio having memory means for storing radio user validation code

Details Radio having memory means for storing radio user validation code Radio having memory means for storing radio user validation code

1994-05-04

1995-04-04

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

4551861, 379357, H04B 138, H04M 100

Patent

active

054045800

ABSTRACT:
A radio (e.g. a cellular radio telephone) is provided which is capable of operating with a set of incoming and outgoing call functions. Removable memory means 132 are provided (e.g. a smart card) for storing radio function selecting information 133 and a radio user validation code. The radio communicates with a radio communications system in response to the code for enabling the radio to receive incoming calls at least. Radio function control means activate a subset of the call functions within the set of call functions in response to the radio function selecting information stored in the removable memory means.

REFERENCES:
patent: 4525865 (1985-06-01), Mears
patent: 4759056 (1988-07-01), Akiyama
patent: 4843588 (1989-06-01), Flynn
patent: 5060295 (1991-10-01), Borras et al.
patent: 5109540 (1992-04-01), Dzung et al.
patent: 5155860 (1992-10-01), McClure
"Spread Spectrum Goes Commercial", IEEE Spectrum, Schilling et al; Aug. 1990; pp. 40-41 and 44-45.

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