KR20060095836A - Method and system for transporting data - Google Patents

Abstract

The present invention relates to a data transmission system and method that is adapted to download various data from a mobile terminal using time information. The present invention provides a data receiving and output unit for receiving and outputting video, audio, and information data, and outputting time information from the information data, and a request for data to the broadcasting station according to the time information output from the data receiving and output unit. A terminal and a broadcast station for wirelessly transmitting data requested by the mobile terminal to a mobile terminal are provided. Therefore, according to the present invention, video, audio, and data programs can be downloaded from the mobile terminal with time information.

Data transfer

Description

Method and system for transporting data

1 is a view for explaining a general data transmission and reception system

2 is a view for explaining a data transmission system according to the present invention;

3 is a flowchart for explaining a data transmission method using a data transmission system according to the present invention.

* Description of the symbols for the main parts of the drawings *

90: receiver 100: tuner unit

110: channel decoding and demodulation unit 120: transmission decoder

130: Demux 140: Modem

150: data decoder 160: video decoder

170: voice decoder 180: communication network (PSTN)

190: data output unit 200: mobile terminal

300: broadcasting station

The present invention relates to a data transmission system and method, and more particularly, to a data transmission system and method adapted to download various data to a mobile terminal using time information.

Broadcasting is a mass media that targets an unspecified number, which is advantageous because it can be compressed like computer data compression because all elements (video, audio, data) are treated digitally.

After color TV broadcasting, stereo sound, remote control device, subtitle broadcasting, data broadcasting, etc. have adopted some digital technologies. In the 90's, computer and network technologies have been spreading more rapidly, so that the broadcasting field can realize high-definition and multifunctional TV. Digital TV was pursued as a video device.

In the case of digital TV (hereinafter, DTV), one program of HDTV level and three or more programs of SDTV level can be transmitted to one channel, and digital signal transmission and processing make it possible to enjoy a much cleaner screen. The ghost phenomenon can be solved on its own, and radio waves reflected by obstacles can be solved on their own.

Digital signal processing of digital TV video and audio becomes the same digital data format, and additional data can be added and sent.

For example, multimedia related services such as information related to the program or real time information such as stocks, exchange rates, weather forecasts, and internet information can be enabled.

Recently, each broadcasting station has implemented a VOD service.

Hereinafter, a data transmission system according to the prior art will be described with reference to the accompanying drawings.

1 is a view for explaining a data transmission system according to the prior art.

The data transmission system according to the prior art can be largely divided into a transmitting side and a receiving side.

The transmitting side first encodes and decodes the data to be transmitted (for example, an electronic program guide (EPG), etc.), a data generator 10 such as a video signal, an audio signal, and the data from the data generator 10. And the like, a data processor 20 for performing a packet, etc., a packetizer 30 for packetizing the data processed by the data processor 20 into transport stream data, and a packetized transmission in the packetizer 30. A mux 40 for multiplexing the stream data, a transmission encoder 50 for encoding the multiplexed transport stream data, a channel coding for channel coding and modulating the transport stream data encoded in the transmission encoder 50, and And a modulator 60, an amplifier 70 for amplifying them, and a transmitter (transmission antenna) 80 for wirelessly transmitting the amplified data.

In addition, the receiving end receives a radio channel transmitted from the transmitting end 80 (receiving antenna) 90, a tuner unit 100 for tuning a specific channel by the user at the receiving end 90, and the tuner unit 100. Demultiplexing the channel decoding and demodulation unit 110 for channel decoding and demodulation of the transport stream data tuned in the UE, the transport decoder 120 for decoding the demodulated transport stream, and the transport stream data decoded in the transport decoder 120. A demultiplexer (Demux) 130, a video decoder 160 for decoding a video and an audio of the demultiplexed data, a voice decoder 170, and data for decoding information data other than video and audio. And a decoder 150 and a data output unit 190 for outputting decoded video, audio, and information data.

Here, the modem 140 and the communication network (PSTN) 180 provide a bidirectional service of the data output unit 190, such as a VOD.

As described above, in the conventional data transmission system, data is packetized to transmit a broadcast signal. When packetizing and transmitting the broadcast signal, time information for an EPG (electronic program guide) is also transmitted.

However, such a conventional data transmission system is for a video device or audio output device (audio) such as a TV or a computer, and in order to receive a video or sound again, a VOD service must be obtained separately, or the stored data can be stored in a mobile phone, PDA, or notebook computer. In the mobile terminal, there was a problem that is difficult to receive.

The present invention is to solve the problems of the prior art as described above, an object of the present invention is to provide a data transmission system and method that can download a variety of data from the mobile terminal using the time information.

In order to achieve the above object, the present invention provides a data receiving and output unit for receiving and outputting video, audio, and information data, and outputting time information from the information data, and according to the time information output from the data receiving and output unit. A mobile terminal for requesting data to a broadcast station and a broadcast station for wirelessly transmitting data requested by the mobile terminal to a mobile terminal are provided.

The time information may include at least one of year, month, day, hour, and minute.

The data receiving and outputting unit includes: a receiving end receiving a wireless channel, a tuner unit tuning a specific channel by the user at the receiving end, and a channel decoding and demodulation channel decoding and demodulating the transport stream data tuned at the tuner unit. A decoder for demultiplexing a grandfather, a transport decoder for decoding the demodulated transport stream, a transport stream data decoded by the transport decoder, and outputting time information to a time data output unit of the data output unit; It is preferably configured to include a decoder for decoding the video and audio of the demultiplexed data, respectively, and a data output unit for outputting the decoded video, audio, data, and time information / wired / wireless.

In addition, the data output unit preferably comprises a time data output unit for outputting the time data in at least one of a wired communication method and a wireless communication method.

Here, the time information is preferably time information for a specific program of the broadcasting station.

The time information is preferably information included in the electronic program guide.

In addition, the mobile terminal is preferably at least one of a mobile phone, a PDA or a notebook computer.

In order to achieve the above object, the present invention comprises the steps of outputting time information of a broadcast program from a broadcasting station from a channel tuned by a data output unit for outputting video, audio, and data; Requesting a broadcast program from the terminal with the time information, and transmitting a program corresponding to the time information from the broadcast station to the mobile terminal. .

The step of outputting time information of a specific program from the tuned channel may include performing channel decoding and demodulation on the tuned channel, decoding the transmission data on the demodulated channel, and And detecting the time information, and outputting the time information by one of the wired / wireless communication methods in the data output unit.

Preferably, the time information is included in the electronic program guide of the broadcasting station.

Therefore, according to the present invention, various data can be downloaded from the mobile terminal with time information.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

The same components as in the prior art are given the same names and the same reference numerals for convenience of description, and detailed description thereof will be omitted.

3 is a view for explaining a data transmission system according to the present invention.

The data transmission system according to the present invention basically receives and outputs video, audio and information data, and outputs and outputs time information (year, month, day, hour, minute, etc.) from the information data, and The mobile terminal 200 for requesting data according to the time information output from the data receiving and outputting unit to the broadcasting station 210, and the broadcasting station for wirelessly transmitting the data requested from the mobile terminal 200 to the mobile terminal 200 ( 210 is configured to include

In more detail, the receiving end (receiving antenna) 90 for receiving a wireless channel, the tuner unit 100 for tuning a specific channel by the user at the receiving end 90, and the transport stream tuned in the tuner unit 100 The channel decoding and demodulation unit 110 for channel decoding and demodulation of data, the transport decoder 120 for decoding the demodulated transport stream, the transport stream data decoded in the transport decoder 120 are demultiplexed, and the time information is decoded. A demultiplexer 130 outputting to the time data output unit 191 of the data output unit, a video decoder 160 which decodes video and audio of the demultiplexed data, a voice decoder 170, The data output unit 190 includes a data decoder 150 for decoding data other than video and audio, and a time output unit 191 for outputting decoded video, audio and data, and outputting time / wireless information. And time output unit 191 The mobile terminal 200 requests data to the broadcasting station according to the time information output from the mobile station 200 and the broadcasting station 210 wirelessly transmits the data requested by the mobile terminal 200 to the mobile terminal 200.

That is, in the present invention, when the digital broadcasting is packetized and time information is added to the packet and transmitted, the time data output unit is composed of a wireless port such as infrared, Bluetooth, or a wired port such as USB or IEEE1394. By connecting to the 191 to receive the time data from the time data output unit 191 to the wired or wireless port in the mobile terminal 200, such as a mobile phone, PDA, notebook.

In this case, the time data information is time information about a specific program.

Therefore, if a request is made to the broadcasting station 210 through time information when necessary, the broadcasting station 210 can transmit only the material of the time zone requested by the viewer, not the entire program.

For example, you can selectively download only the desired time or part of the broadcast without the need to download the entire broadcast in real time using the time information transmitted during the broadcast of specific information, such as educational broadcasts, weather and policy announcement press conferences. Will be.

For reference, there is a part indicating time information in the data stream, and an EPG (Electronic Program Guide: Broadcast Time Schedule) used in the DTV is included in the part indicating current time information. Information included in the EPG includes start time and end time information of a specific broadcast program.

Therefore, by using the time information used for EPG, that is, information indicating the start and end time of the program, the information is transmitted to a mobile phone, PDA, or notebook by using a time data output unit such as an infrared port or USB so that the program can be used later. You will receive the whole.

In addition, the broadcasting station not only sends the information including the beginning and the end of the program when producing a packet for DTV broadcasting, but also includes the time interval information of the entire program in the data stream due to the development of transmission technology (for example, the first 1 of the broadcasting program). If you create a data stream with time information every minute to minute), you will not only download the entire program, but will also receive only the data for the required time interval.

4 is a flowchart for explaining a data transmission method according to the present invention.

The data transmission method according to the present invention is to request a broadcast program from a mobile station to a specific broadcasting station with time information.

First, the channel is tuned (S10).

Then, channel decoding and demodulation are performed (S20), and the transmission data is decoded (S30).

Next, the transmission data is demultiplexed, and time information (year, month, day, hour, minute, etc.) is output (S40).

The time information is output from the time data output unit of the data output unit in a wired / wireless manner, and received by the mobile terminal (mobile phone, PDA, notebook, etc.) and stored with channel information (S50).

The mobile terminal requests a broadcast program according to time data from a broadcast station as necessary (S60).

Upon receiving the broadcast station, the broadcast station transmits the broadcast program to the mobile terminal (S70), and the mobile terminal downloads the broadcast program (S80).

In the data transmission system and transmission method according to the present invention, it is possible to download various data from a mobile terminal with time information.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (10)

A data receiving and output unit for receiving and outputting video, audio, and information data, and outputting time information from the information data; A mobile terminal for requesting data to a broadcasting station according to time information output from the data receiving and outputting unit; And a broadcasting station for wirelessly transmitting the data requested by the mobile terminal to the mobile terminal. The method of claim 1, The time information includes at least one of year, month, day, hour, minute. The method of claim 1, The data receiving and output unit, A receiving end for receiving a wireless channel, A tuner unit which tunes a specific channel by a user at the receiving end; A channel decoder and demodulator for channel decoding and demodulating the transport stream data tuned by the tuner; A transport decoder for decoding the demodulated transport stream; A demultiplexer (Demux) for demultiplexing the transport stream data decoded by the transport decoder and outputting time information to the time data output unit of the data output unit; A decoder for decoding a video and an audio of the demultiplexed data, respectively; And a data output unit for outputting the decoded video, audio, and data, and outputting time / wireless information. The method of claim 3, wherein And the data output unit is configured with a time data output unit for outputting the time data in at least one of a wired communication method and a wireless communication method. The method of claim 1, And the time information is time information on a specific program of the broadcasting station. The method of claim 5, wherein And the time information is information included in an electronic program guide. The method of claim 1, The mobile terminal is one or more of the mobile phone, PDA or notebook computer. Outputting time information of a broadcast program from a broadcast station from a channel tuned by a data output unit to output video, audio, and data; Requesting a broadcast program from the mobile terminal having received the time information of the broadcast program to the broadcast station with the time information; And transmitting the program corresponding to the time information from the broadcasting station to the mobile terminal. The method of claim 8, The step of outputting time information of a specific program from the tuned channel, Performing channel decoding and demodulation for the tuned channel; Decoding transmission data in the demodulated channel; Detecting time information in the transmission data; And outputting the time information from the data output unit in one of a wired and wireless communication schemes. The method of claim 9, And the time information is included in the electronic program guide of the broadcasting station.

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