Digital broadcast system for providing area-specialized additional information broadcast service and broadcast service method using the same
First Claim
1. A digital broadcast apparatus for providing area-specialized additional information broadcast data, comprising:
- a transmitter for assigning area-specialized additional information broadcast data containing an area ID (Identification) code to at least one of a plurality of broadcast channels, and transmitting the area-specialized additional information broadcast data;
a gap filler for receiving the area-specialized additional information broadcast data, determining whether the area ID code contained in the received area-specialized additional information broadcast data corresponds to an ID code of a desired area, and transmitting additional information broadcast data specialized for the desired area to a shadow area if it is determined that the area ID code corresponds to the desired area ID code; and
a receiver for receiving the area-specialized additional information broadcast data from the gap filler.
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Accused Products
Abstract
A digital broadcast system is disclosed that real-time transmits additional information broadcast data specialized for area and time information to receivers located in a prescribed area via a gap filler. The digital broadcast system includes a satellite control station, a gap filler, and a receiver. The satellite control station assigns additional area ID codes to individual area-specialized additional information broadcast data, and transmits the area-specialized additional information broadcast assigned the additional area ID codes over a prescribed broadcast channel. The gap filler receives broadcast data, and determines whether the area ID code is contained in the received broadcast data. If it is determined that the determined area ID code is equal to desired area-specialized additional information broadcast data, the gap filler amplifies the output level of the received broadcast data, and transmits the amplified broadcast data to a shadow area. The receiver receives the re-transmitted broadcast data, and displays the area-specialized additional information broadcast data.
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Citations
22 Claims
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1. A digital broadcast apparatus for providing area-specialized additional information broadcast data, comprising:
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a transmitter for assigning area-specialized additional information broadcast data containing an area ID (Identification) code to at least one of a plurality of broadcast channels, and transmitting the area-specialized additional information broadcast data;
a gap filler for receiving the area-specialized additional information broadcast data, determining whether the area ID code contained in the received area-specialized additional information broadcast data corresponds to an ID code of a desired area, and transmitting additional information broadcast data specialized for the desired area to a shadow area if it is determined that the area ID code corresponds to the desired area ID code; and
a receiver for receiving the area-specialized additional information broadcast data from the gap filler. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for carrying out an area-specialized additional information broadcast service in a digital broadcast system which includes a satellite control station for assigning area-specialized additional information broadcast data to at least one of several broadcast channels, and transmitting the assigned area-specialized additional information broadcast data, and a gap filler for receiving the assigned area-specialized additional information broadcast data from the satellite control station, said method comprising the steps of:
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controlling the gap filler to find a channel receiving the area-specialized additional information broadcast data from among the broadcast channels;
determining whether the found channel transmits additional information broadcast data specialized for a desired area; and
if it is determined that the found channel transmits additional information broadcast data specialized for the desired area, transmitting the area-specialized additional information broadcast data to a user terminal. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for carrying out an area-specialized additional information broadcast service in a digital broadcast system for controlling a gap filler to receive a TDM (Time Division Multiplexing) signal from a satellite control station on the condition that a satellite control station of the digital broadcast system assigns area-specialized additional information broadcast data to at least one of a plurality of broadcast channels, and performs TDM (Time Division Multiplexing) and coding processes on the assigned area-specialized additional information broadcast data to generate the TDM signal, said method comprising the steps of:
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a) receiving the TDM signal, performing TDM modulation and decoding operations on the received TDM signal, and detecting a frame edge part of a TDM frame;
b) dividing the detected frame into code division multiplexing (CDM) channel data;
c) analyzing the divided channel data information, and determining whether additional information broadcast data specialized for a desired area exists in data of the broadcast channels; and
d) if it is determined that the additional information broadcast data specialized for the desired area exists in the data of the broadcast channels, performing CDM modulation and coding operations on the additional information broadcast data specialized for the desired area, and transmitting the resultant signal in the form of a CDM signal to a user terminal. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A gap filler comprising:
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a receiver for receiving, from among a plurality of broadcast channels, area-specialized additional information broadcast data and an area ID (Identification) code;
an additional information determination unit for detecting the area ID code, comparing the detected area ID code with a prestored area ID code and determining whether or not the received area-specialized additional information broadcast data is to be broadcast in a desired area; and
a transmitter for transmitting the area-specialized additional information broadcast data determined to be broadcast in the desired area.
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Specification