Device, method and program for limited user or managing permitted use of number
A quantity and user technology, applied in the fields of computer-readable recording media, physical description readers, and decryptors, which can solve the problem of not being able to determine the owner of the IC card and the IC card.
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no. 1 example
[0068] figure 1 The structural principle of the pay television system according to the first embodiment of the present invention is shown. The pay television system 1 is mainly divided into a transmitting side and a receiving side. The broadcasting station 900 is arranged on the sending side. The receiving side is equipped with a decryption module 200 , an IC card 100 for pay TV, and a TV set 300 .
[0069] On the transmitting side, the broadcasting station 900 transmits the encrypted program attribute signal 203 and the video-audio encrypted signal 201 . Radio or cable can be used as the transmission medium. In the case of a television program with a prescribed age restriction, the encrypted program attribute signal 200 includes program target age information indicative of the prescribed age restriction. In addition, information for revoking the encryption key of the video-audio encrypted signal may be included.
[0070] The video-audio encrypted signal 201 is encrypted ...
no. 2 example
[0182] In the foregoing first embodiment, pay television IC card 100 and decryption module 200 are provided as separate units. In the second embodiment of the present invention, pay television IC card 100 and decryption module 200 are integrally formed as decryptor 400 .
[0183] The decryptor of the second embodiment is provided by a pay television service provider when a subscriber who is to receive the service of the pay television system applies for authorization to watch a pay television program. The pay television service provider and the subscriber's service number record the date of birth information and the secret identification code in the storage unit 120 accordingly, before handing over the decryptor to the subscriber.
[0184] Figure 9 is a block diagram of the principle structure of the decryptor of the second embodiment. see Figure 9 , the decryptor 400 includes a control unit 110 for controlling the entire decryptor 400, a broadcast information input unit ...
no. 3 example
[0205] see Figure 11 According to the pay TV system 910 of the third embodiment of the present invention, it includes server devices 700A, 700B and 700C, one master registration device 800 and seven decryption modules 200A, 200B, 200C, 200D, 200E, 200F and 200G.
[0206] Although Figure 11 3 server devices 700A, 700B and 700C, master registration device 800 and decryption modules 200A, 200B, 200C, 200D, 200E, 200F and 200G are shown, but the number of these units is arbitrary as long as there is at least one duplicate unit.
[0207] In pay television system 910 of the third embodiment, the number of uses of pay television IC card 100A is managed by any one of server devices 700A, 700B, and 700C. For the sake of simplification, the following description will only be made based on the management of the server device 700A. The usage quantity of the pay television IC card 100A is managed according to the permitted usage quantity specified when the pay television IC card 100A ...
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