KR100880985B1 - Method for multi-recording of terminal based on dvb-h - Google Patents

Abstract

The main subject of the present invention is a method for recording other broadcast programs in addition to the broadcast program currently entering the transmission channel during broadcast program reproduction. To this end, when at least one broadcast program to be recorded by the user is selected from among other broadcast programs currently entering the transmission channel in addition to the broadcast program being played, each PID (Program) assigned to an A / V stream to be received for each selected broadcast program is selected. ID) is found and the data corresponding to the PID is received and stored. During the recording, the progress of the recording is analyzed and displayed. By doing so, it is possible to record multiple broadcast programs simultaneously by fully utilizing the characteristics of the DVB-H system having a large transmission capacity per channel, thereby improving user convenience.

Recording, DVB-H

Description

TECHNICAL FOR MULTI-RECORDING OF TERMINAL BASED ON DVB-H}

1 is an internal block diagram of a DVB-H terminal according to an embodiment of the present invention;

2 is a control flowchart for multiple recording in a DVB-H terminal according to an embodiment of the present invention;

3 is a screen example showing a currently playing broadcast program according to an embodiment of the present invention;

4 is a view showing each component necessary to determine the recording progress state according to an embodiment of the present invention;

5 is a screen example showing a recording progress according to an embodiment of the present invention.

The present invention relates to a DVB-H terminal, and more particularly to a method for recording a DVB-H broadcast program.

Current digital broadcasting technology has been developed day by day, the current digital broadcast receiving terminal not only receives and reproduces the digital broadcast data, but also receives and stores the received digital broadcast data frame by frame and decodes it when desired by the user. A function that can play and receive and store digital broadcasting data of specific digital broadcasting contents according to a reservation condition set by a user, such as a reservation time or a reserved broadcasting program, and reproduce it according to a user's selection. It was provided.

In general, in the DVB-H service, the DVB-H server transmits system information such as channel information to the DVB-H terminal using PSI / SI (Program Specific Information / Service Information). Based on this information, the A / V stream is received and played. That is, when a user of the DVB-H terminal inputs a corresponding channel to the DVB-H terminal to watch content of a specific service, a unique destination IP address of a service corresponding to the input channel is selected. The DVB-H UE refers to the target_IP_address_descriptor and PMT (Program Map Table) included in the INT (Information Notification Table) of the PSI / SI information already received and stored, and is assigned a PID (Packet Identifier) to the A / V stream to be received. ) Can be obtained. The DVB-H terminal receives and reproduces burst data corresponding to the PID thus obtained.

For example, when the DVB-H terminal uses an 8 MHz transmission channel, the transmission data rate is usually about 3 to 13 Mbps according to a modulation method, and may include 10 or more A / V programs.

Although a plurality of broadcast programs may be included and transmitted as described above, in the case of the conventional DVB-H terminal, even if a recording function is not provided at all or a recording function is provided, only a broadcast program being watched is possible. For this reason, the effectiveness of the recording function is greatly reduced, and the situation is not fully utilizing the advantages of the system having a large transmission channel such as DVB-H in which several broadcast programs are transmitted.

Accordingly, the present invention provides a method for selectively recording at least one or more other broadcast programs in addition to the broadcast program currently being played by the DVB-H terminal.

In addition, the present invention provides a method for allowing a DVB-H terminal to show the progress of recording while playing a current broadcast program.

According to the present invention for achieving the above-described multi-recording method in the terminal based on DVB-H, the broadcast program to be recorded by the user is selected from among other broadcast programs coming into the current transmission channel during the playback of the broadcast program; Determining, if at least one broadcast program to be recorded is selected, identifying an IP transmitted for each selected broadcast program; acquiring a PID (Program ID) corresponding to the identified IP; And storing the broadcast program.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the same components in the drawings are represented by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

The main subject of the present invention is a method for recording other broadcast programs in addition to the broadcast program currently entering the transmission channel during broadcast program reproduction. To this end, when at least one broadcast program to be recorded by the user is selected from among other broadcast programs currently entering the transmission channel in addition to the broadcast program being played, each PID (Program) assigned to an A / V stream to be received for each selected broadcast program is selected. ID) is found and the data corresponding to the PID is received and stored. During the recording, the progress of the recording is analyzed and displayed. By doing so, it is possible to record multiple broadcast programs simultaneously by fully utilizing the characteristics of the DVB-H system having a large transmission capacity per channel, thereby improving user convenience.

Hereinafter, the components and operations of the DVB-H terminal in which the above functions are implemented will be described with reference to FIG. 1. 1 is an internal block diagram of a DVB-H terminal according to an embodiment of the present invention.

Referring to FIG. 1, the DVB-H terminal includes a DVB-H receiver 210, a DVB-H demodulator 215, a DVB-H IP decapsulator 220, and a PSI / SI analyzer ( 225), IP / UDP processing unit 230, FLUTE decoder (Decoder) 240, ESG information analysis unit 245, recording processing unit 250, video player 255, a plurality of RTP processing unit (235, 265, 275) And as many broadcast file storage units 260, 270, and 280 as the number of RTP processing units.

First, the DVB-H receiver 210 receives the DVB-H signal from the DVB-H system and outputs the DVB-H signal to the DVB-H demodulator 215. The DVB-H demodulator 215 analyzes the MPEG-2 Transport Stream (TS) and outputs it to the DVB-H decapsulator 220 and the PSI / SI analyzer 225. The DVB-H decapsulator 220 analyzes MPEG-2 transport stream data transmitted from a selected channel and decodes a multi-protocol encapsulation (MPE) protocol including Internet Protocol (IP) data. Accordingly, the DVB-H decapsulator 220 decapsulates the Multi Protocol Encapsulation (MPE) section data of the MPEG-2 transport stream to obtain IP data and outputs the IP data to the IP / UDP processor 230.

The PSI / SI analyzer 225 analyzes PSI / SI information. In other words, the PSI / SI analyzing unit 225 analyzes information indicating the configuration of a broadcast program of MPEG-2. The PSI / SI information includes information on which PID data is transmitted to which PID and information necessary for handover. For example, when a user selects a broadcast program to watch, the DVB-H terminal determines which IP address the broadcast program is input to from the ESG data and uses the result of analyzing the PSI / SI information to determine the IP. Find the PID corresponding to the address. Thereafter, the MPE encoded data transmitted by the found PID is decoded and transmitted to the IP stack, that is, the IP / UDP processing unit 230, and the IP / UDP processing unit 230 analyzes and processes the IP data transferred to the MPE payload. It provides the socket interface to the upper layer.

As described above, the IP / UDP processor 230 processes the input IP packets and outputs them to the RTP processor 235 and the FLUTE decoder 240. In general, files and electronic service guide (ESG) data transmitted from the DVB-H system are transmitted using the FLUTE protocol. Thus, files and ESG data transmitted using the FLUTE protocol are transmitted to the FLUTE decoder 240. The FLUTE decoder 240 detects transmission data such as ESG data in the IP data transmitted using the IP protocol and outputs the transmission data to the ESG information analyzer 245.

On the other hand, since the video and audio data, that is, A / V data is transmitted using the RTP protocol, the A / V data is transmitted to the RTP processor 235. Accordingly, the RTP processor 235 RTP-processes the input A / V data and outputs the A / V data to the video player 255. Accordingly, the video player 255 plays A / V data, which is a broadcast program that the user wants to watch.

The ESG information analyzer 245 analyzes the ESG data input from the FLUTE decoder 240 and analyzes the information required for the broadcast service. That is, it analyzes ESG data transmitted using the FLUTE / ALC protocol to extract the respective broadcast program information. In this case, the ESG data includes broadcast schedules of each channel, paid / free broadcast program information, and information necessary to reproduce each broadcast program.

The recording processor 250 outputs a list of broadcast programs coming into the currently selected channel so that a user can select them, and analyzes and outputs the progress of the broadcast program being recorded. The operation of the recording processing unit 250 will be described in detail below.

On the other hand, since the broadcast program that the user wants to watch is transmitted using the RTP protocol, only one RTP processing unit 235 is needed to play the broadcast program. However, in the embodiment of the present invention, at least one RTP processing unit 265 and 275 capable of decoding the RTP protocol is required to record other broadcast programs in addition to the broadcast program being played. That is, an RTP processor (Demux) capable of multi-loading each of which can decode several broadcast programs is required.

As described above, when A / V data for each broadcast program transmitted using the RTP protocol is RTP-processed in each of the RTP processing units 235, 265, and 275, the respective RTP processing units 235, 265, and 275 output the RTP processing units 235, 265, and 275. The A / V data is stored in the broadcast file storage units 260, 270, and 280, respectively, in accordance with the MP4 file format.

A process for performing a multi-recording function in a DVB-H terminal having the above configuration will be described with reference to FIG. 2. 2 is a control flowchart for multiple recording in a DVB-H terminal according to an embodiment of the present invention.

Referring to FIG. 2, when a DVB-H service is started by a user, the terminal may display a list of broadcast programs currently viewable based on ESG information. From the list, the terminal determines whether a broadcast program to be played by the user is selected in step 300, and when the corresponding broadcast program is selected, the terminal determines an IP to which the selected broadcast program is transmitted in step 305. The terminal identifies the IP by referring to the ESG and Session Description Protocol (SDP) information.

Then, the terminal acquires a PID corresponding to the IP identified in step 310. The terminal searches for the PID corresponding to the identified IP in the PSI information having the information of mapping the IP of each broadcast program and the PID (Program ID) of the actual physically received MPEG-TS to find the corresponding PID requiring MPE section filtering. You get it. When the PID is acquired as described above, the terminal decodes the data transmitted by the PID obtained in step 315 and then plays back the audio / video as the decoding result in step 320. Specifically, when the terminal MPE filters the PID acquired through the DVB-H IP decapsulator 220, the IP data enters the IP / UDP processor 230. Then, the audio / video is separated from the IP data through which the A / V stream is transmitted through the RTP processor 235, which is reproduced by the video player 255.

As such, the broadcast program according to the reproduction of the audio / video may be viewed as shown in FIG. 3. 3 is a screen example showing a currently playing broadcast program according to an embodiment of the present invention, and the program name currently being broadcast is displayed on the screen. As shown in the upper part of the screen of FIG. 3, the terminal may analyze the ESG and SDP information and display the currently broadcast time information in the form of a bar and a time unit in relation to the total time.

In operation 325, the terminal determines whether a broadcast program to be recorded is selected by the user. For example, when the user presses the record button, the terminal displays a list of programs that are currently broadcasted on the current transmission channel and allows the user to select a program to record, as shown at the bottom of the screen of FIG. 3 with reference to the ESG information. In this case, the part showing the list of programs to be recorded may also analyze the ESG and SDP information to show how much the broadcast program is in progress in the form of bars.

As described above, the user may select at least one or more broadcast programs to be recorded while displaying a list of other broadcast programs coming into the current transmission channel in addition to the currently playing broadcast program. If the broadcast program to be recorded is selected in step 325, the terminal proceeds to step 330 to determine the IP to which each selected broadcast program is transmitted, as in the case of selecting a broadcast program to play. Then, in step 335, the terminal acquires a PID for each broadcast program, decodes and stores data transmitted for each PID acquired in step 340, and continues recording unless recording is terminated in step 345.

On the other hand, when selecting a broadcast program to play and record, the terminal determines the IP by referring to both the ESG and SDP information. The reason why the UE references the ESG and SDP information is as follows. The ESG has a list of broadcast programs, and the terminal outputs a list of broadcast programs based on the ESG information on the screen so that a user can select a broadcast program. The SDP has information necessary for playing a broadcast program, including an IP broadcasted with the broadcast program. Therefore, in order for a user to select and watch or record a desired broadcast program from a list of broadcast programs, the terminal needs such ESG information, but if the user does not need to display the list of broadcast programs, the SDP information of a broadcast program to be immediately played or recorded is displayed. If already known, the terminal can immediately play or record without ESG information. Such SDP information may be included in the ESG or may have a separate file type. If the file has a separate file type, the ESG information includes location information of the SDP file for playing the broadcast program. As described above, when the broadcast program is played or recorded, the process of displaying the broadcast program list and identifying the IP by referring to the ESG and SDP information is the same.

In addition, only one RTP processing unit is required to store a broadcast program to be reproduced, but each RTP processing unit is allocated to each broadcast program to be recorded when storing a broadcast program to be recorded, and each RTP processing unit is assigned an IP from the IP / UDP processing unit 230. When data is received, A / V streams are separated for each program. Then, each broadcast program A / V stream is stored as a file in the broadcast file storage corresponding to each RTP processing unit.

When recording is performed through the above-described process, the terminal may show the current recording state to the user. This recording progress state is performed under the operation of the component of FIG. 4 is a diagram illustrating each component required to determine the recording progress state according to an embodiment of the present invention.

Referring to FIG. 4, the ESG information analyzer 24 analyzes the ESG information to determine service start time and end time for each broadcast program. The SDP analyzer 285 analyzes the SDP including the ESG session information to determine the start time and end time of the session. The broadcast file storage unit 290 determines the current storage capacity compared to the total storage capacity.

In this way, sessions grasped from start time and end time, and session description protocol (SDP) information for each of the selected broadcast programs, which are grasped from each component 245, 285, and 290, that is, the electronic service guide (ESG) information. The current storage capacity information of the start time and end time and the total storage capacity is transmitted to the recording progress processing unit 400. Then, the recording progress processing unit 400 configures the program name and progress time currently being viewed, the program name being recorded, and the recording progress status in the form of bars based on the information, and outputs them through the display unit 410. This recording progress can be seen as shown in Figure 5, Figure 5 is a screen example showing the recording progress in accordance with an embodiment of the present invention. When the user presses the record button while watching a broadcast, the progress of the broadcast program currently being transmitted to the transport channel and the broadcast program being recorded is displayed as shown in FIG. 5. As the broadcast progress status is displayed, the user can conveniently record the broadcast.

According to the present invention as described above, by using the characteristics of the DVB-H system having a large transmission capacity per channel, it is possible to record several broadcast programs at the same time, thereby increasing the user's convenience. In addition, since the user can record other programs or simultaneously record two or more programs, the user has the advantage of recording and viewing a program that has not been broadcasted at the same time.

Claims (6)

delete In the multiple recording method in the terminal based on DVB-H, Determining whether a broadcast program to be recorded by the user is selected from among other broadcast programs currently entering the transmission channel while playing the broadcast program; Determining an IP transmitted for each selected broadcast program when at least one broadcast program to be recorded is selected; Obtaining a PID (Program ID) corresponding to the identified IP, and storing a broadcast program transmitted for each acquired PID; The process of identifying the IP, A method for multiplexing at a terminal based on DVB-H, characterized in that the process of identifying each IP to which the selected broadcast program is transmitted by referring to a Session Description Protocol (SDP). In the multiple recording method in the terminal based on DVB-H, Determining whether a broadcast program to be recorded by the user is selected from among other broadcast programs currently entering the transmission channel while playing the broadcast program; Determining an IP transmitted for each selected broadcast program when at least one broadcast program to be recorded is selected; Obtaining a PID (Program ID) corresponding to the identified IP, and storing a broadcast program transmitted for each acquired PID; The PID is Characterized in that it is obtained by searching for the PID corresponding to the identified IP in PSI (Program Specific Information) information having information mapping the IP of each broadcast program and the PID (Program ID) of the actual physically incoming MPEG-TS. Multiple recording method in the terminal based on DVB-H. In the multiple recording method in the terminal based on DVB-H, Determining whether a broadcast program to be recorded by the user is selected from among other broadcast programs currently entering the transmission channel while playing the broadcast program; Determining an IP transmitted for each selected broadcast program when at least one broadcast program to be recorded is selected; Obtaining a PID (Program ID) corresponding to the identified IP and storing a broadcast program transmitted for each obtained PID; Determining the recording progress state by referring to Electronic Service Guide (ESG) information and Session Description Protocol (SDP) information while storing the broadcast program; And a process of outputting the identified recording progress state to a screen. The method of claim 4, wherein the recording progress state, And a broadcast program name currently being played and a progress time, and at least one of the stored broadcast program name and a recording progress time. The method of claim 4, wherein the recording progress state, By analyzing the start time and end time for each selected broadcast program identified from the Electronic Service Guide (ESG) information, the session start time and end time identified from the Session Description Protocol (SDP) information, and the current storage capacity compared to the total storage capacity. Multiple recording method in the terminal based on DVB-H, characterized in that.

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