Added information insertion apparatus and method in broadcasting system
First Claim
1. An additional information insertion apparatus for a broadcasting system, comprising:
- a broadcasting signal transmitter configured to transmit a broadcasting signal;
a data extractor configured to extract a modulated signal by dividing the modulated signal from a modulator of the broadcasting signal transmitter;
an additional data generator configured to extract synchronization of the broadcasting signal from the extracted broadcasting signal, generate additional data, modulate the additional data based on the extracted synchronization, and generate a level of the modulated additional data to be a smaller level than a signal level of the modulated signal as much as a predetermined value; and
a data synthesizer configured to insert the additional data from the data generator into the modulated broadcasting signal.
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Abstract
The embodiments provide an additional information insertion apparatus for a broadcasting system. The system includes a broadcasting signal transmitter configured to transmit a broadcasting signal along with a data extractor configured to extract a modulated signal by dividing the modulated signal from a modulator of the broadcasting signal transmitter. An additional data generator is configured to extract synchronization of the broadcasting signal from the extracted broadcasting signal, modulate the additional information based on the extracted synchronization, and generate a level of the modulated additional information to be a smaller level than a signal level of the modulated signal by as much as a predetermined value. A data synthesizer is provided to insert the additional data from the data generator into the modulated broadcasting signal.
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Citations
15 Claims
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1. An additional information insertion apparatus for a broadcasting system, comprising:
- a broadcasting signal transmitter configured to transmit a broadcasting signal;
a data extractor configured to extract a modulated signal by dividing the modulated signal from a modulator of the broadcasting signal transmitter;
an additional data generator configured to extract synchronization of the broadcasting signal from the extracted broadcasting signal, generate additional data, modulate the additional data based on the extracted synchronization, and generate a level of the modulated additional data to be a smaller level than a signal level of the modulated signal as much as a predetermined value; and
a data synthesizer configured to insert the additional data from the data generator into the modulated broadcasting signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a broadcasting signal transmitter configured to transmit a broadcasting signal;
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12. A method for inserting information in a broadcasting system, comprising:
- modulating a broadcasting signal and transmitting the modulated broadcasting signal;
extracting the broadcasting signal by dividing the modulated broadcasting signal;
extracting synchronization of the broadcasting signal from the extracted broadcasting signal, generating additional data, modulating the additional data based on the extracted synchronization, and generating a level of the modulated additional data to be a smaller level than a level of the modulated broadcasting signal as much as a predetermined value; and
inserting the generated additional data into the modulated broadcasting signal. - View Dependent Claims (13, 14, 15)
- modulating a broadcasting signal and transmitting the modulated broadcasting signal;
Specification