APPARATUS AND METHOD FOR TRANSMITTING DATA IN BROADCASTING SYSTEM
First Claim
1. An apparatus for transmitting data in a broadcasting system, the apparatus comprising:
- a basic broadcasting data encoder configured to encode basic broadcasting data streams to generate basic broadcasting signals;
a synchronization unit configured to acquire synchronization information for synchronization between the basic broadcasting data streams and at least one additional data packet;
an additional data multiplexing unit configured to input the synchronization information to each of the additional data packets and multiplex the additional data packets to which the synchronization information is input to generate additional data streams;
an additional data encoder configured to encode the additional data streams to generate additional signals;
an adding unit configured to generate mixed signals based on the basic broadcasting signals and the additional signals;
a modulating unit configured to modulate the mixed signals to generate transmission signals; and
a transmitting unit transmitting the transmission signals.
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Accused Products
Abstract
An apparatus for transmitting data in a broadcasting system is provided. The apparatus comprises a basic broadcasting data encoder configured to encode basic broadcasting data streams to generate basic broadcasting signals; a synchronization unit configured to acquire synchronization information for synchronization between the basic broadcasting data streams and at least one additional data packet; an additional data multiplexing unit configured to input the synchronization information to each of the additional data packets and multiplex the additional data packets to which the synchronization information is input to generate additional data streams; an additional data encoder configured to encode the additional data streams to generate additional signals; an adding unit configured to generate mixed signals based on the basic broadcasting signals and the additional signals; a modulating unit configured to modulate the mixed signals to generate transmission signals; and a transmitting unit transmitting the transmission signals.
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Citations
20 Claims
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1. An apparatus for transmitting data in a broadcasting system, the apparatus comprising:
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a basic broadcasting data encoder configured to encode basic broadcasting data streams to generate basic broadcasting signals; a synchronization unit configured to acquire synchronization information for synchronization between the basic broadcasting data streams and at least one additional data packet; an additional data multiplexing unit configured to input the synchronization information to each of the additional data packets and multiplex the additional data packets to which the synchronization information is input to generate additional data streams; an additional data encoder configured to encode the additional data streams to generate additional signals; an adding unit configured to generate mixed signals based on the basic broadcasting signals and the additional signals; a modulating unit configured to modulate the mixed signals to generate transmission signals; and a transmitting unit transmitting the transmission signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A synchronization apparatus for synchronization between basic broadcasting data streams and additional data packets in a broadcasting system, the apparatus comprising:
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a synchronization information extractor configured to extract packet Identifiers (PIDs) and program clock references (PCRs) from the basic broadcasting data streams, the PIDs identifying elementary streams of basic broadcasting data streams, the PCRs being a criterion for synchronization between the elementary streams; a synchronization information assigner configured to assign the PIDs and the PCRs to each of the additional data packets; and a time calculator configured to calculate playing start time of the additional data packets, based on the PCRs.
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9. A method for transmitting data in a broadcasting system, the method comprising:
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encoding basic broadcasting data streams to generate basic broadcasting signals; acquiring synchronization information for synchronization between the basic broadcasting data streams and at least one additional data packet; inputting the synchronization information to each of the additional data packets; multiplexing the additional data packets to which the synchronization information is input to generate additional data streams; encoding the additional data streams to generate additional signals; adding the additional signals to the basic broadcasting signals to generate mixed signals; modulating the mixed signals to generate transmission signals; and transmitting the transmission signals. - View Dependent Claims (10, 11, 12, 13)
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14. An apparatus for receiving data in a broadcasting system, the apparatus comprising:
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a receiving unit configured to receive received signals; a demodulating unit configured to demodulate the received signals to generate mixed signals; a basic broadcasting signal detecting unit configured to detect basic broadcasting signals from the mixed signals; a basic broadcasting signal decoder configured to demodulate the basic broadcasting signals to generate basic broadcasting data streams; a subtracting unit configured to subtract the basic broadcasting signals from the mixed signals to detect additional signals; an additional signal decoder configured to decode the additional signals to generate additional data streams; and an additional data demultiplexing unit configured to demultiplex the additional data streams to generate at least one additional data packet, wherein each of the additional data packets comprises synchronization information for synchronization between the basic broadcasting data streams and each of the additional data packets. - View Dependent Claims (15, 16, 17)
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18. A method for receiving data in a broadcasting system, the method comprising:
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receiving received signals; demodulating the received signals to generate mixed signals; detecting basic broadcasting signals and additional signals from the mixed signals; decoding the basic broadcasting signals to generate basic broadcasting data streams; decoding the additional signals to generate additional data streams; and demultiplexing the additional data streams to generate at least one additional data packet, wherein each of the additional data packets comprises synchronization information for synchronization between the basic broadcasting data streams and each of the additional data packets. - View Dependent Claims (19, 20)
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Specification