KR20010018993A - Reducing Method of Initial Booting time for Data Service Broadcasting - Google Patents

Abstract

PURPOSE: A method for reducing a reset time of a data service broadcasting is provided so that a booting time can be reduced in channel conversion by downloading a reset file module of a requested channel in advance. CONSTITUTION: A channel list is formed by using broadcasting signals tuned by a tuner. It is confirmed whether the channel list corresponds to a data service channel(20). Here, carousel_identifier_descriptor information is detected from the second descriptor of a program map table. A storing unit stores the program map table. Thereafter, a reset file module is downloaded from the carousel_identifier_descriptor information(22). The downloaded module information is stored(23). When the user receives the data service broadcasting or stores the channel as the data service broadcasting, it is judged whether a module is stored in the storing unit(24). The stored module is output to a data service decoding engine(25). The data service decoding engine is booted(26).

Description

Reducing Method of Initial Booting time for Data Service Broadcasting}

The present invention relates to a broadcast receiving method, and more particularly, to a method for shortening an initialization time of a data service broadcast, which reduces an initial booting time when selecting a data service broadcast program.

The future of broadcasting technology will accelerate the convergence of communication, computer, and broadcasting due to the spread of media using the compression method in the digital age, and the digital television receiver created according to this is distinguished from the existing analog television receiver in terms of image quality and sound quality. The breakthrough is expected, and data compatibility is possible with digital signal processing such as computers, DVDs, digital camcorders, and digital VCRs. In addition, the digital television receiver can broadcast data providing additional information as well as audio and video.

Data broadcasting includes multiplexing and transmitting information in the vertical return period of a television video signal or multimedia information including text information, still images, product information, and program guide information (EPG) to users with digital television receivers or computers through separate channels. Can be provided.

Therefore, each broadcaster employing data broadcasting, breaking news information such as news information that does not know when and where it occurs, sports game information that wants to know the results, stock information information that needs real-time data, weather information, traffic information, etc. Communication information and product guide information may be provided by providing product information.

Conventionally, when entering a data service broadcast program channel, the initial booting time takes a little, and there is a problem that it takes a long time for a user to receive a data service due to a black screen.

The technical problem to be achieved by the present invention is to provide a method for shortening the initialization time of the data service broadcast to download the initial file module of the stream of the channel to be provided with the data service broadcast in advance to reduce the boot time when switching channels.

1 is a block diagram showing a configuration of an apparatus for shortening an initialization time of a data service broadcast.

2 is a flowchart illustrating an operation of a method for shortening an initialization time of a data service broadcast according to the present invention.

According to an aspect of the present invention, there is provided a method for shortening the initialization time of a data service broadcast, comprising: (a) determining whether a data service channel is present; (b) detecting predetermined data service broadcast information in a second descriptor of the program map table; (c) downloading a module of an initial file from the data service broadcast information; (d) storing the downloaded module information; (e) determining whether a module is stored when the data service broadcast channel is switched; And (f) outputting and booting the module to the data service decoding engine when the module is stored in the step (e).

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a block diagram showing a configuration of an apparatus for shortening an initialization time of a data service broadcast.

The apparatus shown in FIG. 1 includes a tuner 10 for tuning a data service broadcast and a general broadcast signal, and a storage unit 11 for storing an initial file module among channel streams in the same mux among data service broadcast signals tuned by a control signal. The controller determines a data service channel, outputs a control signal for detecting and storing Carousel_Identifier_Descriptor information from a program map table (PMT), and outputs module information stored in the storage unit 11. The control unit 12 for booting the engine for decoding the data service using the signal processing unit 13 for processing the audio / video signal to display the booted data service broadcast signal, the display unit 14 for displaying the signal processed broadcast signal It is composed of

2 is a flowchart illustrating an operation of a method for shortening an initialization time of a data service broadcast according to the present invention.

The flowchart shown in FIG. 2 includes the steps of determining whether it is a data service channel (20), detecting carousel_idetifier_descriptor information in a second descriptor of a program map table (21), and downloading a module of an initial file from carousel_idetifier_descriptor information ( 22) storing the downloaded module information (23), determining whether there is a stored module (24), outputting the stored module to the data service decoding engine (25), data service decoding engine It consists of a step 26 of booting.

Next, the present invention will be described in detail with reference to FIGS. 1 and 2.

In case of entering the data service broadcasting program channel, the initial method takes a little bit of initial booting time and the user has to wait with a black screen. To shorten this time, the initial file module of the stream of data serving channels is pre-downloaded and stored while the user is watching other channels in the same MUX (Multiplexer) (not shown). In this case, when the user switches a channel that is in data service, the booting time is shortened, and the data service broadcast screen can be viewed without waiting for a black screen.

Multiplexer Channel BBC BBC1 BBC2 BBC News 24 Teletext iTV iTV1 iTV2 Teletext .. ...

Table 1 Tuner Channel List

In step 20, it is determined whether the data service channel is formed by constructing a channel list among the tuned signals tuned by the tuner 10. Table 1 shows a list of tuner channels. For example, four channels are allocated in the BBC mux. That is, the four channels BBC1, BBC2, BBC News24, and Teletext are in the same mux as the BBC.

In the case of the non-data service channel, that is, when the user is receiving a broadcast other than the data service channel, the carousel_idetifier_descriptor information is detected in the second descriptor of the program map table (step 21). The controller 12 determines whether the current user is viewing a data service program of the program being viewed and detects carousel_idetifier_descriptor information when receiving another broadcast.

The program map table information is stored in the storage unit 11. The control unit 12 detects carousel_idetifier_descriptor information for the data service channel from the program map table stored in the storage unit 11. The carousel_idetifier_descriptor information is a descriptor for a data broadcast service existing in the second descriptor in the program map table according to the DVD PSI / SI standard.

The module of the initial file is downloaded by parsing the carousel_idetifier_descriptor information of the program map table (step 22).

After parsing the information of the control unit 12, the downloaded module information is stored in the storage unit 11 (step 23).

When the user is currently receiving the data service channel broadcast or when the user stores the channel through the data service broadcast, it is determined whether the module is stored in the storage unit 11 (step 24). The control unit 12 determines whether the data service broadcast is viewed and whether the module is stored in the storage unit 12.

If the module is stored in the storage unit 11, the stored module is output to the data service decoding engine (not shown) (step 25). Since the module is stored in the storage unit 11, booting is possible without detecting and downloading the carousel_idetifier_descriptor information.

The data service decoding engine is booted with the output module (step 26). When the booting is started, the signal processor 13 outputs the audio / video signal for the broadcast signal of the corresponding channel to the display unit 14.

The present invention is not limited to the above-described embodiments and can be modified by those skilled in the art within the spirit of the invention.

As described above, according to the present invention, the initial file module of the stream of the channel to be provided with the data service broadcast is downloaded in advance, the booting time is shortened when the channel is switched, so that the user can be provided with the data service broadcast in a short time. It works.

Claims (2)

(a) determining whether it is a data service channel; (b) detecting predetermined data service broadcast information in a second descriptor of the program map table; (c) downloading a module of an initial file from the data service broadcast information; (d) storing the downloaded module information; (e) determining whether a module is stored when the data service broadcast channel is switched; And and (f) outputting the module to the data service decoding engine and booting if the module is stored in the step (e). The method of claim 1, wherein the module downloading in step (c) is A method for shortening the initialization time of a data service broadcast, wherein the user is operated while watching another channel in the same mux.