Cryptography – Key management – Having particular key generator
Patent
1984-08-15
1989-01-03
Cangialosi, Salvatore
Cryptography
Key management
Having particular key generator
380 16, 380 25, 380 44, H04L 904
Patent
active
047962976
ABSTRACT:
The amount of money which should be charged upon reception of a pay television signal or a like information signal, is calculated by a charging device comprising a calculator (25) for calculating the amount of charge and an encoder (28) for encoding the charge and time instant (date) using by a key code specific to the charging device to form a check code which should be reported together with the charge. The date data may be indicated either by a timepiece (26) or by a time signal multiplexed on the information signal. Cost information used in the calculator may be multiplexed on the information signal. Alternatively and preferably, the cost information is represented by a scrambling key used in providing the information signal.
REFERENCES:
patent: 3470309 (1969-09-01), Nyberg
patent: 3890461 (1975-06-01), Vogelman et al.
patent: 4008369 (1977-02-01), Theurer et al.
patent: 4225884 (1980-09-01), Block et al.
patent: 4302810 (1981-11-01), Bouricius et al.
patent: 4326098 (1982-04-01), Bouricius et al.
patent: 4358672 (1982-11-01), Hyatt et al.
patent: 4484217 (1984-11-01), Block et al.
patent: 4528588 (1985-07-01), Lofberg
patent: 4599647 (1986-07-01), George et al.
Cangialosi Salvatore
NEC Corporation
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