Abstract:
The present invention relates to a method and apparatus for transceiving a broadcast signal in a digital broadcast system. The method for transmitting a broadcast signal according to one embodiment of the present invention comprises the following steps: generating a main signal using main data; generating an additional signal, the power of which is lower than that of the main signal, using a plurality of additional data; generating an additional signal frame using the additional signal and a frame header; and generating a broadcast signal using the main signal and an additional signal frame. The frame header is used in selectively extracting the plurality of additional data from the additional signal frame. According to the present invention, additional data can be efficiently transmitted while maintaining compatibility with existing digital broadcasting systems.
Abstract:
The present invention relates to a method and apparatus for providing a plurality of transport interactive 3DTV broadcasting services in the provision of higher definition 3D video service and 3D data service, while maintaining the compatibility with the existing digital TV broadcasts or 3DTV services. To this end, an input 3D video is encoded to generate a 3D additional video base stream and a 3D additional video enhanced stream. Engineer information for defining engineers, which includes 3D broadcasting service configuration information, is generated, and then an encoded 2D base video stream, an encoded audio stream, the encoded 3D additional video base stream and the engineer information are multiplexed and transmitted via a base layer. The 3D additional video enhanced stream is multiplexed and transmitted via an enhanced layer.
Abstract:
Provided is an apparatus and method for measuring an individual receiving power using an identification signal of a repeater or a transmitter. The apparatus and method includes a total receiving power measuring unit for measuring a total receiving power from transmitters; an identification signal analyzing unit for extracting a channel profile signal from the signal transmitted from the predetermined transmitter through a multi-path, wherein the predetermined transmitter transmits a signal having the identification signal; and an individual receiving power calculating unit for calculating an individual receiving power from the transmitter based on the measured total receiving power and the extracted channel profile signal.
Abstract:
The present invention relates to a relay apparatus for transmitting ancillary data and to a method for same, and particularly, to a relay apparatus for transmitting ancillary data for a terrestrial digital television broadcast and to a method for same. The apparatus according to one embodiment of the present invention comprises: a relay apparatus for relaying a digital broadcast (DTV) signal containing ancillary data; a receiving and processing unit for receiving the ancillary data and DTV signal via a receiving antenna, down-converting the received signal into an intermediate frequency (IF) signal, and demodulating the IF signal; an equalizing unit for removing noise and a multipath signal from the signal output from the receiving and processing unit, and outputting the resulting signal; an ancillary data extraction unit for extracting the ancillary data from the signal output from the equalizing unit, and outputting the extracted ancillary data; an adder for adding the output from the ancillary data extraction unit to the DTV signal output from the equalization unit; and a transmitting and processing unit for modulating the output from the adder, up-converting the modulated output into a transmitting RF band, amplifying the transmitting power, and transmitting the amplified power via a transmitting antenna.
Abstract:
A method and apparatus for transmitting/receiving broadcasting-communication data is provided. The apparatus includes: an original signal generator (102) configured to receive the original data and generate baseband original signals; a first modulator (104) configured to receive the baseband additional signals and generate original signals of a predetermined band; and additional signal generator (106) configured to receive the additional data and generate baseband additional signals; a second modulator (108) configured to receive the baseband additional signals and generate additional signals of a predetermined band; an average power controller (110) configured to control an average power of the additional signals of the predetermined band; an inserter (112) configured to insert the additional signals of the predetermined band with a controlled average power to the original signals of the predetermined band to thereby generate mixed signals of a predetermined band; and a transmitter (114) configured to transmit the mixed signal of the predetermined band.
Abstract:
The present invention relates to a method and apparatus for transceiving a broadcast signal in a digital broadcast system. The method for transmitting a broadcast signal according to one embodiment of the present invention comprises the following steps: generating a main signal using main data; generating an additional signal, the power of which is lower than that of the main signal, using a plurality of additional data; generating an additional signal frame using the additional signal and a frame header; and generating a broadcast signal using the main signal and an additional signal frame. The frame header is used in selectively extracting the plurality of additional data from the additional signal frame. According to the present invention, additional data can be efficiently transmitted while maintaining compatibility with existing digital broadcasting systems.
Abstract:
An additional information insertion apparatus for a broadcasting system includes: 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, 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 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.
Abstract:
Provided is an on-channel repeater and method thereof. The on-channel repeating apparatus includes: a receiving unit for receiving a Radio Frequency (RF) broadcast signal; a demodulating unit for converting the RF signal into a baseband signal; an equalizing unit for equalizing the baseband signal to generate an equalized baseband signal; a modulating unit for converting the equalized baseband signal into an RF signal; and a transmitting unit for transmitting the RF signal.
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.