System for transmitting the scrambled broadcast-signals in single frequency network, and a method thereof
First Claim
1. A system for transmitting encrypted broadcast signals on a single frequency network (SFN) for terrestrial and satellite digital broadcasting, comprising:
- a main broadcasting unit comprising a hardware processor configured to transmit the encrypted broadcast signals including data streams and transmitter identification information (TII) of the main broadcasting unit through a main broadcasting network;
a repeating unit comprising a hardware processor configured to;
amplify the encrypted broadcast signals of the main broadcasting network and transmit the amplified encrypted broadcast signals, andmodulate and amplify the data streams input by the main broadcasting unit through a private line and repeat the encrypted broadcast signals of the main broadcasting unit through a repeating network;
a decrypting key provider comprising a hardware processor configured to;
receive a decrypting key value from at least one of the main broadcasting unit and the repeating unit, andtransmit a user authentication and decrypting key to a charged subscriber terminal through a mobile communication network,wherein the TII of the main broadcasting unit is included in the encrypted broadcast signals transmitted from the main broadcasting unit and is used to decrypt the encrypted broadcast signals received by a subscriber terminal on the main broadcasting network,wherein a repeating system TII value of the repeating unit is included in the encrypted broadcast signals transmitted from the repeating unit and is used to decrypt the encrypted broadcast signals received in a subscriber terminal on the repeating network,wherein the repeating unit is configured to allocate the repeating unit TII value, which is different from the TII of the main broadcasting unit, and transmits the repeating unit TII value when repeating at least one of the data streams.
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Accused Products
Abstract
Disclosed is a system for transmitting encrypted broadcast signals to different transmitters on a single frequency network (SFN) in a digital broadcasting system. The system for transmitting encrypted broadcast signals on the SFN includes: a main broadcasting system for transmitting encrypted broadcast signals including data streams and transmitter identification information (TII) through a main broadcasting network; a repeating system for amplifying encrypted broadcast signals of the main broadcasting network and transmitting the amplified broadcast signals, or modulating and amplifying streams input by the main broadcasting system through a private line and repeating broadcast signals of the main broadcasting system through a repeating network; and a decrypting key provider for receiving a decrypting key value from the main broadcasting or repeating system and transmitting a user authentication and decrypting key to a charged subscriber terminal through a mobile communication network.
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Citations
12 Claims
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1. A system for transmitting encrypted broadcast signals on a single frequency network (SFN) for terrestrial and satellite digital broadcasting, comprising:
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a main broadcasting unit comprising a hardware processor configured to transmit the encrypted broadcast signals including data streams and transmitter identification information (TII) of the main broadcasting unit through a main broadcasting network; a repeating unit comprising a hardware processor configured to; amplify the encrypted broadcast signals of the main broadcasting network and transmit the amplified encrypted broadcast signals, and modulate and amplify the data streams input by the main broadcasting unit through a private line and repeat the encrypted broadcast signals of the main broadcasting unit through a repeating network; a decrypting key provider comprising a hardware processor configured to; receive a decrypting key value from at least one of the main broadcasting unit and the repeating unit, and transmit a user authentication and decrypting key to a charged subscriber terminal through a mobile communication network, wherein the TII of the main broadcasting unit is included in the encrypted broadcast signals transmitted from the main broadcasting unit and is used to decrypt the encrypted broadcast signals received by a subscriber terminal on the main broadcasting network, wherein a repeating system TII value of the repeating unit is included in the encrypted broadcast signals transmitted from the repeating unit and is used to decrypt the encrypted broadcast signals received in a subscriber terminal on the repeating network, wherein the repeating unit is configured to allocate the repeating unit TII value, which is different from the TII of the main broadcasting unit, and transmits the repeating unit TII value when repeating at least one of the data streams. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for transmitting broadcast signals on a single frequency network (SFN) for terrestrial and satellite digital broadcasting, comprising:
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multiplexing, by a main broadcasting station, data into broadcast signals; encrypting the broadcast signals; generating an encrypting key; inserting transmitter identification information (TII) of the main broadcasting station into the encrypted broadcast signals to enable a subscriber terminal to determine whether the encrypted broadcast signals are transmitted through at least one of a main broadcasting station and a repeating system, wherein the repeating system repeats the encrypted broadcast signals of the main broadcasting station through a repeating network; transmitting the encrypted broadcast signals to at least one of an uncharged subscriber and a charged subscriber through the main broadcasting station; and providing a decrypting key of the encrypted broadcast signals to a mobile communication system, wherein the providing is through a mobile communication network, wherein the TII of the main broadcasting station is included in encrypted broadcast signals transmitted from the main broadcasting station and is used to decrypt the encrypted broadcast signals received in a subscriber terminal on the main broadcasting network, wherein a repeating TII value of the repeating system is included in the encrypted broadcast signals transmitted from the repeating system and is used to decrypt the encrypted broadcast signals received in a subscriber terminal on the repeating network, and wherein the repeating system is configured to allocate the repeating TII value, which is different from the TII of the main broadcasting station, and transmits the repeating TII value when repeating at least one data stream of the main broadcasting station. - View Dependent Claims (10, 11, 12)
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Specification