KR20020080118A - Language translator apparatus and method for using Common Interface module - Google Patents

Abstract

PURPOSE: A system and a method for converting a language using a CI module are provided to recognize subtitle data of transport stream data through the CI module to convert the subtitle data into a language selected by a user in real time. CONSTITUTION: A system and a method for converting a language using a CI module includes a subtitle decoder(10), a language converter(20) and a display(30). The subtitle decoder extracts subtitle data of transport stream data inputted through a transport stream interface. The language converter stores the extracted subtitle data in interpretable units and converts the subtitle data into a language a user sets. The display displays the converted language.

Description

Language translator apparatus and method for using Common Interface module}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital broadcast receivers, and more particularly, to a language conversion apparatus and method using a CI module for real-time conversion of a language only by user setting using a common interface (CI).

In general, a digital TV expresses various digital data as components, and integrates the digital data with audio / video (A / V) and displays it on the screen in a transport stream (TS) format. The subtitle mainly displays the voice on the screen for the hearing impaired.

In addition, with the development of VCRs and various networks, one content is delivered to various channels in various countries, and sometimes people with different languages are provided with the same content.

When people with different languages are provided with the same contents, if real-time news such as real-time news or sports broadcasting is prioritized, there is a drawback that it is not immediately understood or delivered. There is the hassle of having to resynthesize the port stream.

Accordingly, an object of the present invention has been made in view of the above-described problems of the prior art, and the CI module recognizes subtitle data of transport stream data and converts the subtitle data into a language set by a user in real time. It is to provide a language conversion apparatus and method using a CI module.

1 is a block diagram showing a language conversion device using a CI module according to the present invention

2 is a block diagram illustrating a subtitle decoder of a receiver

3 is a flowchart illustrating an operation of a language converter of FIG. 1.

FIG. 4A is a first embodiment for explaining a display method through the display unit of FIG. 1; FIG.

4B is a second embodiment for explaining a display method through the display unit of FIG. 1;

4C is a third embodiment for explaining a display method through the display unit of FIG. 1;

Explanation of symbols for the main parts of the drawings

According to an aspect of the present invention for achieving the above object, a subtitle decoder unit for extracting subtitle data of the transport stream data input through the transport stream interface, and the extracted subtitle data to be translated And a display unit for storing the converted language in real time and storing the converted language in real time.

According to another aspect of the present invention for achieving the above object, determining whether the subtitle type input to the CI module is image data, and if the image type, extracting a text code from the image data; And storing the extracted text code in a unit displayed on one screen, and converting the stored text code into a language set by a user and displaying the extracted text code.

Hereinafter, a configuration and an operation according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram illustrating a language conversion apparatus using a CI module according to the present invention.

Referring to FIG. 1, first, a common interface CI includes a transport stream interface TSI and a command interface.

The transport stream interface delivers an MPEG2 transport packet to a CI module, and the command interface defines a resource and a protocol for communicating with the CI module.

Among the resources of the command interface, the MMI (Man Machine Interface) resource is a resource defined by the CI module to perform an appropriate user interface, and has a high-level and a low-level. In the case of the high-level MMI, the CI module provides certain format information to the receiver and the receiver delivers it to the user through an appropriate user interface.

The low-level MMI delivers the user interface desired by the CI module to the receiver in the form of a subtitle.

The language conversion apparatus using the CI module equipped with the above-described common interface includes a subtitle decoder 10 for extracting subtitle data of transport stream data input through a transport stream interface, and the extracted subtitle data. It is composed of a language conversion unit 20 for storing the translation in a unit capable of translation in real time to a language set by the user, and a display unit 30 for displaying the converted language.

The subtitle decoder 10 extracts subtitle data in a transport stream flowing through the transport stream interface. This may use the subtitle decoder of the existing receiver, and the CI module may internally embed the subtitle decoder 10.

When the subtitle decoder unit is used in the existing receiver, a mechanism for the CI module to receive the decoded subtitle data must exist and define a new resource between the CI module and the receiver.

That is, the new resource is defined as an object and a protocol that can deliver the subtitle data of the receiver to the CI module.

2 is a block diagram illustrating a subtitle decoder of a receiver.

Referring to FIG. 2, a CI module 100 for receiving transport stream data, a demultiplexer 300 for separating the transport stream data into video, audio, and additional information signals, and the CI module 100; The common interface 200 connecting the demultiplexer 300, the subtitle descriptor of the transport stream data of the separated video, audio, and side information signals, and the subtitle data in the PES packet are decoded. Or a subtitle decoder 400 for extracting subtitle data in a text form and a graphic device 500 for displaying the extracted subtitle data.

When using the subtitle decoder 400 of the receiver as described above, the CI module receives the subtitle data transmitted through the input of the graphic device 500 and translates it into a language set by the user.

The translated subtitle data is converted into a plain text and subtitle format and transmitted to the graphic device 500.

As described above, when the module directly embeds the decoder without using the subtitle decoder of the receiver, the module can perform a language translation task more quickly.

FIG. 3 is a flowchart illustrating an operation of a language converter of FIG. 1.

Referring to FIG. 3, since there are two types of subtitle data formats, image and text, it is first determined whether the subtitle type is an image (S21).

The reason for determining whether the subtitle type is an image is because the content of the image format may be a picture such as an actual picture or a chart or text is represented as an image.

As a result of the determination (S21), in the case of an image, the image file is analyzed and a text code is extracted. (S22)

The text code extraction has a language code in the subtitle descriptor so that it can know in which language it is encoded.

For reference, it is as follows.

subtitle_descriptorO {

descriptor_tag // 0x59

descriptor_length

for (i = 0; i <N ++) {

ISO_639_language_code

subtitling_type

composition_page_id

ancillary_page_id

}

}

In addition, the subtitle descriptor has a language code so that it can know which language is encoded.

On the other hand, as a result of determining whether the subtitle type is an image (S21), if it is not an image, the image file is analyzed and a text code extraction process (S22) is not necessary.

Then, the extracted text code is stored in a translatable unit. (S23)

Here, the unit is based on subtitle data displayed on one screen.

The text code stored in the translatable unit is translated into a language set by the user. (S24)

The unit of translation is most appropriate based on the actual subtitle data displayed on one screen.

4A is a first embodiment for describing a display method through the display unit of FIG. 1.

Referring to FIG. 4, a method of displaying translated text data using a common interface high-level MMI resource, and delivering the translated text data to a receiver using a 'TEXT' or 'LIST' object of a high level MMI. The receiver displays on the screen through the user interface.

First, in order to access the resource of the receiver from the CI module, the receiver transmits an 'Open Session Request' (MMI) message which is a session for the resource.

The receiver receiving the 'open session request' message transmits an 'open session response' message to the CI module (S32).

When the session is successfully opened as described above, the CI module transmits a 'display control' object to the receiver, and thus sends a message requesting the receiver to set the MMI mode to the high-level MMI (S33).

Then, when the high-level MMI module setting is performed, the receiver transmits a message indicating that the CI module performs mode setting through 'display replay' (S34).

Subsequently, the CI module loads the translated text into a 'TEXT' or 'LIST' object and transmits the same to the receiver for display. (S35 ... Sn)

And when there is no more content to display, the CI module sends the 'CLOSE_MMI' message to the receiver, thus ending the MMI operation. (Sn + 1)

FIG. 4B is a second embodiment for describing a method of displaying through the display unit of FIG. 1. FIG.

Referring to FIG. 4B, the CI module displays the translated text data using a common interface low-level MMI resource and the CI module expresses the user interface using subtitle data. Send an 'open session request' message requesting mode setting to the level MMI (S41).

The 'open session response' message, which is a response message according to the mode setting to the low-level MMI, is transmitted to the CI module (S42).

If the session is successfully opened as described above, the CI module transmits a 'display control' object to the receiver, and thus sends a message requesting the receiver to set the MMI mode to the low-level MMI.

Then, when the low-level MMI module setting is performed, the receiver transmits a message indicating that the CI module mode setting is performed through 'display replay' (S44).

When the CI module mode setting is completed, the CI module encodes the translated text data into subtitle payloads and assembles the data until transmission to one subtitle segment is impossible, and then the subtitle decoder of the receiver receives the corresponding subtitle data. (S44 ... Sm)

If there is no more content to display, the CI module sends a 'CLOSE_MMI' message to the receiver, thus ending MMI operation. (Sm + 1)

FIG. 4C is a third embodiment for explaining a display method through the display unit of FIG. 1. FIG.

Referring to FIG. 4C, the text data translated through the language converter 51 is encoded into subtitle data in the CI module and then transported to the transport stream by muxing and displaying the translated data in the transport stream. Muxing 54 as appropriate.

In this case, since the translated subtitle data may be longer or shorter than the existing data, the CI module encodes by adjusting the display parameter of the subtitle data appropriately.

As described above, according to the present invention, the subtitle data transmitted in one language can be real-time according to the user's desired language according to the CI module. The effect is that the input data was a subtitle, but it can be extended to general text documents, images with text, and voice to text.

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 (3)

A subtitle decoder unit for extracting subtitle data of transport stream data input through the transport stream interface; A language converter which stores the extracted subtitle data in a translatable unit and converts the subtitle data into a language set by a user in real time; And a display unit for displaying the converted language. The method of claim 1, Display through the display unit is displayed using a CI high-level (Low-Level) or low-level (Low-Level) MMI resources, or CI module, characterized in that to display by muxing the transport stream (Mux) Language conversion device Determining whether the subtitle type input to the CI module is image data; Extracting a text code from the image data in the case of the image type; Storing the extracted text code in units actually displayed on one screen; A language conversion method using a CI module comprising the step of converting the stored text code into a language set by a user and displaying the same