KR100737600B1 - Data broadcasting receiver and method for storaging data thereof - Google Patents

Abstract

A data broadcasting reception apparatus and a data storing method thereof are provided to resolve limitation in size of an RAM(Random Access Memory) disk which varies according to maximum size of received data by storing header information of a file and a memory point in the RAM disk assigned to an RAM and storing the file in the RAM. A demultiplexing part(120) separates data for data broadcasting from a transport stream received from a broadcasting station. A Carousel module(140) converts the separated data into data of a directory and a file. A part of an RAM(150) is assigned as an RAM disk(152). A control part(160) separately stores the converted data of the directory and the file. The control part stores header information of the file and a memory point indicating a stored location of the file in the RAM disk, and stores the file in the RAM. The data for the data broadcasting is data of a DSM-CC(Digital Storage Media-Command and Control) section format.

Description

Data broadcasting receiver and method for storing data thereof

1 is a block diagram schematically illustrating an apparatus for receiving data broadcasts according to a preferred embodiment of the present invention;

FIG. 2 is a diagram for explaining a data structure generated by the data carousel module shown in FIG. 1;

3 is a diagram illustrating a method for efficiently storing data for data broadcasting according to the present invention; and

4 is a flowchart illustrating a data storage method by a data broadcast receiving apparatus according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: data broadcast receiving device 110: tuner

120: demultiplexer 130: broadcast signal processing unit

140: carousel module 142: data carousel module

144: object carousel module 150: RAM

152: ram disk 160: control unit

170: data broadcasting processing unit

The present invention relates to a data broadcast receiving apparatus and a data storage method thereof, and more particularly, to a data in a directory and file form of data in a DSM-CC (Digital Storage Media-Command and Control) section format transmitted from a broadcasting station for data broadcasting. The present invention relates to a data broadcast receiver and a data storage method thereof, which are capable of being efficiently stored in a RAM by converting the data structure into a data structure.

Recently, as digital broadcasting is accelerated, digital broadcasting of high quality and high quality through various broadcasting media such as terrestrial broadcasting, satellite broadcasting and cable broadcasting has been started. In addition, each broadcaster and cable broadcaster is introducing a data broadcast service that can provide a variety of additional information with the broadcast program.

Data broadcasting is an end-to-end interactive personalized solution that provides not only existing broadcasting programs but also information related to broadcasting programs and living information such as weather, news, traffic information, internet and e-commerce services through a broadcasting network. Means. That is, the broadcasting station provides additional data contents together with the broadcasting program, and the data broadcasting receiving apparatus and the broadcasting station can interact with each other through the data contents, so that the information desired by the user can be obtained more widely. For example, while watching a history program, the characters and the background of the period can be checked by accessing the Internet, and the personal information of the singers or athletes can be checked while watching an entertainment program or a sports program.

The data broadcasting standard work for interactive broadcasting is being conducted mainly by the US Advanced Television Systems Committee (ATSC) and Digital Video Broadcasting (DVB) in Europe.

Meanwhile, an application and data transmitted from a broadcasting station to a viewer for data broadcasting are converted from an object carousel form to a data carousel form by a carousel server. It is finally sent through the server in the form of Digital Storage Media-Command and Control (DSM-CC) section format. Here, the DSM-CC section format is a standard technology defined in ISO / IEC13818-6, and means a message type of a transport layer for data service.

The data broadcast receiver converts the data transmitted in the DSM-CC section format into a data structure of a directory and a file type, and stores the data in a RAM disk area allocated to RAM. Then, the data broadcasting service is provided using the data stored in the ram disk. Herein, the RAM disk refers to a predetermined area allocated in RAM in order to use RAM as a virtual hard disk.

As described above, when the DSM-CC section data transmitted from a broadcasting station for data broadcasting is converted into a data structure in a directory and file form and stored in a ram disk, only once at first without having to interpret the data every time the data is accessed. You can interpret it. In addition, there is an advantage that the file input / output can be easily processed by using the file system of the ramdisk.

By the way, the RAM disk has a problem that can not store the data more than the initially allocated capacity, there is a problem that the area allocated to the RAM disk can not be used for other purposes (use of pure RAM memory) in addition to the data storage. .

In particular, in a variable broadcasting environment, since the size of the received data cannot be known in advance, it is not easy to determine the size of a ram disk for storing data for data broadcasting.

Accordingly, the technical problem to be achieved by the present invention is to convert the DSM-CC section data for data broadcasting into a directory and a file format and store it in a ram disk so that the size of the ram disk can be minimized while being independent of the data size. A data broadcast receiving device and a data storage method thereof are provided.

In order to solve the above technical problem, a data broadcast receiving apparatus according to the present invention includes a demultiplexer for separating data for data broadcasting from a transport stream (TS) received from a broadcasting station; A carousel module for converting the data separated by the demultiplexer into data of a directory and a file type; RAM that allocates a certain area as a ram disk; And separately storing the directory and file data converted by the carousel module in the RAM and the RAM disk, wherein a memory pointer indicating a header information of the file and a location where the file is stored is stored in the RAM disk. The actual file is characterized by including a control unit for processing to be stored in the RAM.

The data for data broadcasting is characterized in that the data of the DSM-CC (Digital Storage Media-Command and control) section format.

On the other hand, in order to solve the above technical problem, the data storage method in the data broadcast receiving apparatus according to the present invention comprises the steps of separating the data for data broadcasting by demultiplexing the received transport stream; Converting the data for data broadcasting into data in a directory and file form; And separately storing the directory and file data in a RAM and a RAM disk allocated to the RAM, wherein a memory pointer indicating a header information of the file and a location where the corresponding file is stored is stored in the RAM disk. And storing in the RAM.

The data for data broadcasting is characterized in that the data of the DSM-CC (Digital Storage Media-Command and control) section format.

Hereinafter, with reference to the accompanying drawings will be described the present invention in more detail. However, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

1 is a block diagram schematically illustrating an apparatus for receiving data broadcasts according to a preferred embodiment of the present invention.

As shown in FIG. 1, the data broadcast receiving apparatus 100 according to the present invention includes a tuner 110, a demultiplexer 120, a broadcast signal processor 130, a carousel module 140, and a RAM 150. ), The control unit 160 and the data broadcast processing unit 170 are configured.

The tuner 110 tunes a broadcast signal for a channel selected by a user among a plurality of broadcast signals received through the antenna 105. The signal received through the channel is in the form of a transport stream (TS). The transport stream includes data for data broadcasting as well as digital broadcast signals. Data for data broadcasting is converted into data in the Digital Storage Media-Command and Control (DSM-CC) section format and transmitted.

The demultiplexer 120 demultiplexes a transport stream received through the tuner 110 by characteristics. For example, the demultiplexer 120 extracts a digital broadcast signal from a transport stream received through the tuner 110 and provides it to the broadcast signal processor 130. In addition, if the DSM-CC section data for data broadcasting is included in the transport stream received through the tuner 110, it is extracted and provided to the carousel module 140.

The broadcast signal processor 130 processes the digital broadcast signal separated from the demultiplexer 120 and outputs the signal to the outside.

The carousel module 140 converts the DSM-CC section data output from the demultiplexer 120 into data in a directory and file form and provides the same to the controller 160.

To this end, the carousel module 140 parses the DSM-CC section data output from the demultiplexer 120 and generates a data structure as shown in FIG. 2. And an object carousel module 144 that generates data in the form of directories and files based on the data structure generated by the data carousel module 140.

The RAM 150 is a storage medium for storing data for data broadcasting, and a predetermined area is allocated to the RAM disk 152. Here, the ram disk 152 refers to an area allocated from the ram 150 to use the RAM 150 as a virtual hard disk. The ram disk 152 is an area allocated by a developer for data storage for data broadcasting in the process of manufacturing the data broadcasting receiving apparatus 100.

3 is a view illustrating a method for efficiently storing data in the form of directories and files generated by the carousel module 140 according to the present invention in the ram disk 152.

As shown in FIG. 3, the RAM disk 152 stores a header information of a file and a memory pointer indicating a location where the corresponding file is stored, and the actual file is stored in the RAM 150.

The controller 160 controls the overall operation of the data broadcast receiving apparatus 100 according to the present invention. For example, the controller 160 receives data converted into a directory and a file form from the carousel module 140 and separately stores the data in the RAM 150 and the RAM disk 152. That is, the controller 160 stores the header information of the file and a memory pointer indicating a location where the corresponding file is stored in the ram disk 152 and processes the actual file in the ram 150.

When the user requests a data broadcasting service through a user interface (not shown), the controller 160 processes the data stored in the RAM 150 based on the information stored in the ram disk 152 to process the data broadcasting service. Control the data broadcast processor 160 to provide.

The data broadcasting processor 170 executes an application for data broadcasting stored in the RAM 150 under the control of the controller 160, and processes the data related thereto to provide a data broadcasting service. Here, an application for providing a data broadcasting service is usually implemented in Java.

As described above, according to the present invention, the DSM-CC section data transmitted for data broadcasting is converted into a data structure in the form of a directory and a file, so that the memory pointer information indicating the header information of the file and the location where the corresponding file is stored is the RAM disk 152. ), And the actual file is stored in the RAM 150, thereby reducing the size of the RAM disk 152, and information stored in the RAM disk 152 when reading a file stored in the RAM 150 for a data broadcasting service. It can be read simply by using.

4 is a flowchart illustrating a data storage method by a data broadcasting receiver according to an exemplary embodiment of the present invention.

1 to 4, when the transport stream TS is received through the tuner 110 (S210), the demultiplexer 120 demultiplexes the transport stream received from the tuner 110 to perform data broadcasting. Separate the data for (S220).

In the above, the data for data broadcasting is converted into data in the DSM-CC section format by the carousel server of the broadcasting station and transmitted. Accordingly, the demultiplexer 120 separates the DSM-CC section data from the transport stream received through the tuner 110.

The DSM-CC section data separated by the demultiplexer 120 is provided to the carousel module 140 (S230).

The carousel module 140 converts the DSM-CC section data provided from the demultiplexer 120 into a directory and a file (S240).

In more detail, the data carousel module 142 parses the DSM-CC section data provided from the demultiplexer 120 and generates the data structure as shown in FIG. 2. The object carousel module 144 then converts the DSM-CC section data into data in the form of directories and files based on the data structure generated by the data carousel module 142.

The data converted into a directory and a file by the carousel module 140 is provided to the controller 160.

The controller 160 separately stores the directory and file data provided from the carousel module 140 in the RAM 150 and the RAM disk 152 (S250).

That is, as shown in FIG. 3, the controller 160 stores the header information of the file and a memory pointer indicating a location where the corresponding file is stored in the ram disk 152, and stores the actual file in the ram 150. .

On the other hand, the present invention has been described in detail through a representative embodiment, but those skilled in the art to which the present invention pertains various modifications within the scope of the present invention with respect to the above-described embodiment. I will understand what is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As described above, according to the present invention, when the DSM-CC section data transmitted from a broadcasting station for data broadcasting is converted into a data structure in the form of a directory and a file, the header information of the file and the corresponding file are stored. The memory pointer indicating the location is stored in the RAM disk allocated to the RAM, and the actual file is stored in the RAM, thereby solving the size limitation of the RAM disk depending on the maximum size of the received data.

In addition, according to the present invention, the size of the ram disk can be minimized because it is independent of the size of data transmitted from the broadcasting station, thereby maximizing the size of the available memory.

Claims (4)

A demultiplexer which separates data for data broadcasting from a transport stream (TS) received from a broadcasting station; A carousel module for converting the data separated by the demultiplexer into data of a directory and a file type; RAM which allocates a predetermined area as a ram disk; And The data of the directory and file type converted by the carousel module are separately stored in the RAM and the RAM disk, and the memory pointer indicating the header information of the file and the location where the corresponding file is stored is stored in the RAM disk. And a control unit for processing a file to be stored in the RAM. The method of claim 1, And the data for data broadcasting is data of a digital storage media command and control (DSM-CC) section format. Demultiplexing the received transport stream to separate data for data broadcasting; Converting the data for data broadcasting into data in a directory and file form; And The data of the directory and file type are separately stored in a RAM and a RAM disk assigned to the RAM, wherein a memory pointer indicating a header information of the file and a location where the corresponding file is stored is stored in the RAM disk, and the actual file is stored in the RAM disk. And storing the data in a RAM. The method of claim 3, wherein And the data for data broadcasting is data of a digital storage media command and control (DSM-CC) section format.

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