Device for calculating a charge for a charged information signal with errors avoided in a report of the charge
First Claim
1. A charging device responsive to an information signal for calculating a fee to be charged for reception of said information signal, said charging device being assigned a key code specific thereto, comprising;
- charge calculating means for calculating an amount representative of said fee and encoding means responsive to said key code for encoding said amount and a time instant when calculation of said amount is completed, to form a check code.
1 Assignment
0 Petitions
Accused Products
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.
29 Citations
11 Claims
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1. A charging device responsive to an information signal for calculating a fee to be charged for reception of said information signal, said charging device being assigned a key code specific thereto, comprising;
- charge calculating means for calculating an amount representative of said fee and encoding means responsive to said key code for encoding said amount and a time instant when calculation of said amount is completed, to form a check code.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
Specification