| 摘要 |
PROBLEM TO BE SOLVED: To allow the user to simply conduct payment of the utility charge and to allow the company to manage the users while preventing illegal use in the case of broadcast of pay service information. SOLUTION: In the SC6, whether or not card a recognition data CCD being fetch data after cipher decoding processing are identical to the card recognition confirmation data CD stored in a mask ROM of a receiver side is discriminated. In the case of received data (CCD)≠CD as the result of discrimination, it is discriminated that the IC card loaded to the service information receiver at present is not a card published legally from the service center but a card not used for the service information receiver. When an illegal IC card is loaded in this way, a message such as 'This card is not valid' is displayed on a display section and the display of pay service information is inhibited.
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