| 摘要 |
The present invention provides a broadcast receiving system capable of receiving programs with a secondary viewing terminal device(s) even when a primary viewing terminal device is not turned on, and detecting a secondary viewing terminal device(s) used in an unauthorized manner. When device authentication between the secondary viewing terminal device and the primary viewing terminal device is established through a communication line, viewing is allowed for the secondary viewing terminal device. When the device authentication is not established, viewing is controlled for the secondary viewing terminal device based on viewing restriction information generated by the center device based on the power status of the primary viewing terminal device.
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