KR100280178B1 - Page Mode Supporting Method of Caption Broadcasting - Google Patents

Abstract

The present invention can support both the simple text display mode and the extended page mode by adding a PAGE-START command, a CONTENTS command, and a PAGE-END command in a caption broadcasting system. It relates to a page mode support method of a caption broadcast.

According to the present invention, there is an advantage in that it is possible to supplement the text mode of the closed caption broadcast to support systematic information retrieval and to add a function of selectively viewing each piece of information.

Description

Page Mode Supporting Method of Caption Broadcasting}

The present invention relates to a page mode support method of caption broadcasting, and more particularly, to support both a simple text display mode and an extended function page mode in order to provide various functions by extending a text function in caption broadcasting. It relates to a page mode support method of a caption broadcast.

Currently, closed captions in the US mode have a simple function in text mode, which makes it difficult to systematically search the receiver when transmitting a large amount of text data. This is so because simply sends and receives characters sequentially. Therefore, there is a need to service the additional information mode in a more improved way in a new country to start caption broadcasting.

Conventional closed captions are started by the Resume Text Display (RTD) command and the current screen is cleared by the Text Restart (TR) command. Then, the cursor moves to one row and one column, waiting for input of the caption command, and then the caption command is inputted. In this case, the user can exit the text mode and enter commands related to character positioning or return between the RTD command and the TR command.

Therefore, when the text mode is conventionally limited to supporting the function of displaying the current character data on the screen as it is, when executing the text mode, the user must passively watch the character data transmitted sequentially. There is a problem of lowering the satisfaction of caption broadcasting viewing of a user who uses the same by not supporting a function of selectively viewing or searching by input.

Accordingly, the present invention has been made to solve such a problem, and in a method of supporting a page mode of a caption broadcasting system having a page memory for storing character data in units of pages, the text mode of closed caption broadcasting is supplemented. An object of the present invention is to provide a method of supporting a page mode of caption broadcasting that can support systematic information retrieval and add a function of selectively viewing each piece of information.

Another object of the present invention is to provide a caption broadcasting page mode support method capable of realizing a high performance text mode by integrating a closed caption broadcast with a Korean Broadcasting Program Service (KBPS).

1 is a block diagram showing a preferred embodiment of an apparatus for improving a text mode of caption broadcasting according to the present invention;

2 is a block diagram showing a data recording system for a preferred embodiment of a page mode supporting method of caption broadcasting according to the present invention;

3 is a list showing the order of instructions constituting the caption data when operating in the page mode in the text mode of the present invention and the number of bits of the corresponding instruction;

4 is an exemplary diagram showing data written to a page memory when operating in a page mode in a text mode;

5 is an exemplary diagram showing an example of a classification screen divided into a major classification, a middle classification, and a small classification according to a content classification code;

6 is a block diagram showing a data reading system for a preferred embodiment of a page mode supporting method of caption broadcasting according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: signal tuning unit 20: caption data slice unit

30: synchronization separator 40: font memory

50: page memory 60: caption broadcast control unit

70: video signal mixing unit

In order to achieve the above object, a method of supporting a page mode of caption broadcasting according to the present invention is a method of supporting a page mode of a caption broadcasting system having a page memory for storing text data in units of pages: an input composite video signal A first determination step of slicing only caption data carried in a vertical blanking period from to determine whether a text start command for a text mode of caption broadcasting is detected in the caption data; A second determination step of determining whether a page start command or a content command is detected by receiving consecutive predetermined bits of data when the text start command is detected as a result of the determination of the first determination step; A page mode performing step of performing a page mode for displaying after separating and storing character data among the caption data in the page unit in a page unit when the page start command is detected as a result of the determination in the second determination step; And a text display mode performing step of performing a text display mode of storing the current text data in a text display memory in order to display the current character data as it is, as a result of the determination of the second determination step. It is characteristic.

The page mode performing step may include setting a page number based on a page order as the page start command is applied, reading a content classification code of a predetermined predetermined bit, and then determining whether the content command is authorized. When the content instruction is applied, a first string for reading the page number, the content classification code, and the page title into the page memory by reading a string from the content classification code until the content instruction is found as a page title. Recording step; When the page ending command is applied by determining whether a page ending command is detected while reading a character code subsequent to the content command, and a character code from the page after the content instruction until the page ending command is detected is expressed as a character code. A second recording step of writing to a memory; And after performing the second recording step, determining whether the text is off and returning to the first recording step if the text is off, and ending the data recording system if the text is off.

The present invention also provides a text display key input determination step of determining whether a text display key is keyed to display the character data stored in the page memory on a television screen by a user's key selection; A display mode determination step of determining whether an operation mode for text display is a simple text display mode or the page mode when the text display key is keyed as a result of the determination of the text display key input determination step; A first display step of reading and displaying character data from the text display RAM when the simple text display mode is determined as the determination result of the display mode determination step; A second display step of displaying, on the screen, a classification table configured by the classification code if the page mode is determined as the determination result of the display mode determination step; A third display step of determining whether the user's selection of the classification list is completed and if the user's selection is completed, displaying a corresponding page on the screen; And after performing the third display step, determining whether the text display key is off, and if the text display key is not off, returning to the display mode determining step; otherwise, terminating all data reading systems. It is preferable to further include.

In addition, in the caption broadcasting system, a simple text display mode and an extended function page mode are added by adding a PAGE-START command, a CONTENTS command, and a PAGE-END command. The feature is that it is supported.

Hereinafter, a preferred embodiment of an apparatus for improving a text mode of caption broadcasting according to the present invention will be described with reference to FIG. 1.

1 is a block diagram showing a preferred embodiment of an apparatus for improving a text mode of caption broadcasting according to the present invention.

A preferred embodiment of the apparatus for improving a text mode of caption broadcasting according to the present invention includes a signal tuning unit 10 for tuning a broadcast signal including a composite video signal, as shown in FIG. A caption data slicer 20 which slices only caption data carried in the vertical blanking period from the composite video signal of the signal tuner 10; A synchronization separator 30 for separating a horizontal sync signal and a vertical sync signal from the composite video signal and using a reference signal to select a position for displaying a character to be displayed at a specific position on a screen; A font memory 40 for storing a font group including Korean fonts; A page memory 50 for storing information when the operation mode of the system is selected as the page mode; Caption broadcast control unit which is combined with the signal tuning unit 10, the caption data slice unit 20, the synchronization separator 30, the font memory 40, and the page memory 50 to generate a control signal for controlling the system as a whole. 60; And a video signal mixer 70 which mixes and outputs the caption data output from the caption broadcast control unit 60 and the video composite signal output from the signal tuning unit 10.

The conventional text mode supports a simple function of receiving a data from this time when a text on command is input, and displaying the data on the screen, and when the text off command is input, clearing the display of the screen.

However, in the actual caption broadcast, the time for outgoing subtitles is relatively short, and furthermore, there is no transmission of data for a long time in a period during which a commercial is broadcast or in a program in which caption dialogue is not provided.

The present invention systematically transmits data at such a time and utilizes it usefully, and further, provides flexibility in the operation of the system by supporting both a text mode supported by a conventional caption broadcast and a page mode, which is an extended text mode according to the present invention. I would like to.

The present invention adds three PAGE START commands, CONTENTS commands, and PAGE END commands to a conventional closed caption, and assumes that the classification table has a uniform format for broadcasters and home appliances. need.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the caption broadcast page mode support method according to the present invention that can be applied to the preferred embodiment of the apparatus for improving the text mode of the caption broadcast configured as shown in FIG. The description will be made by classifying the data reading system.

2 is a block diagram showing a data recording system for a preferred embodiment of a page mode supporting method of caption broadcasting according to the present invention.

In step S10, as the caption data slicer 20 slices only the caption data contained in the vertical blanking period from the composite image signal of the signal tuner 10, it is determined whether a text start command is detected in the caption data. When the start command is detected, in step S20 and step S80, the next 16-bit data is input to determine whether the page start command or the content command. If the start command is a page start command, the page mode execution step (S100) stores the character data in units of pages. If the character data is stored in the page memory 50 to perform the page mode for processing, and the content command is immediately applied, in step S90, the character data is executed to perform the text display mode in which the current character data is displayed on the screen as it is. Text display on ram Lock it.

In the page mode performing step (S100), as described above, the character data is stored in the page memory 50 in order to perform the page mode for storing and processing the character data in units of pages. The explanation is as follows.

In the page mode performing step (S100), first, in step S30, as the page start command is applied, the page number is set according to the page order, and the content classification code of 16 consecutive bits is read, and then the content is obtained through step S40. If it is determined whether the instruction is authorized and the content instruction is authorized, the page number, the content classification code, and the page title are read by reading a string from the content classification code until the content instruction is found as the page title. Write to memory 50.

Subsequently, in step S50, it is determined whether a page end command is detected through step S60 while reading a character code subsequent to the content command, and when a page end command is applied, until after the page end command is detected. The character string is written into the page memory 50 as a character code.

Thereafter, in step S70, it is determined whether the text is off, and if not, the flow returns to step S20, and if the text is off, the data recording system of the present invention is terminated.

On the other hand, as described above, immediately after the text start command is applied, if the content command is applied immediately, the text command mode (ie, the text mode of the current closed caption) is entered. In this case, the character code, control information, and additional information are systematically organized. Since there is no method for storing, the data is not recorded in the page memory 50 but in the text display RAM built in the caption broadcast control unit 60. Typically, a TEXT DISPLAY RAM is two small screens of memory.

3 is a list showing the order of instructions constituting the caption data and the number of bits of the corresponding instruction when operating in the page mode in the text mode of the present invention.

Caption data when operating in the page mode from the text mode, as shown in Figure 3, after the 16-bit text start instruction is applied, 16-bit page start instruction, 16-bit page number, 16-bit content classification code , A page title consisting of a string of characters until a content instruction is detected, a 16-bit content instruction, a character code and control code consisting of a string of characters until a page ending instruction is detected, a 16-bit page ending instruction, and a 16-bit page. The data associated with the number is repeated until a 16-bit text end instruction is detected.

As described above, the end of the page title can be seen by seeing that the content instruction is coming in. If the content instruction is detected, the content until the end of page instruction is detected is defined as a character code corresponding to the page title and the character The code is recorded in the page memory 50 with the content classification code and the page title. Here, the character code corresponds to the contents of the caption data, and the control code is information necessary for determining a position to display the character code.

4 is an exemplary diagram showing data recorded in the page memory 50 when operating in the page mode in the text mode.

FIG. 5 is an exemplary view showing an example of a classification screen divided into a major classification, a middle classification, and a small classification according to a content classification code. As the sports are selected on the large classification screen, and accordingly, baseball is selected on the middle classification screen, the professional baseball is according to the small classification screen. , Sub-categories such as high school baseball, amateur baseball, and junior high school baseball.

6 is a block diagram showing a data reading system for a preferred embodiment of a page mode supporting method of caption broadcasting according to the present invention.

Character data stored in this format is displayed on the television screen by the user's key selection using a system control means such as a remote control or a key panel. In step S210, it is determined whether the text display key is keyed and the text display key is keyed. In step S220, it is determined whether the current operation mode for text display is the simple text display mode or the page mode.

If it is determined in step S220 that the text display mode is reached, in step S260, character data is read and displayed in the text display RAM. On the other hand, if it is determined in step S220 that the page mode is displayed, in step S230, a classification table as shown in FIG. 5 is displayed on the screen, and in step 240, the user's selection of a classification list such as a large classification list, a middle classification list, and a small classification list is determined. If the user's selection is completed by determining whether it is completed or not, the corresponding page is displayed on the screen.

Thereafter, in step S270, it is determined whether the text display key is off, and if the text display key is not off, the process returns to step S220 and if the text display key is off, the data reading system of the present invention is terminated.

On the other hand, if the current broadcast does not support the text mode goes to the page mode unconditionally. This is because the page mode stores past character data in the page memory 50 so that it can be read and displayed.

At the present time, it may be wasteful to use a separate page memory for the text data of the caption broadcast, but if you use the caption function in Korea, it is more likely to be used with K. In this case, the memory of K is shared. The predetermined part can be reduced.

The above-mentioned "K" is one side of this trend, Samsung Electronics Co., LG Electronics Co., Daewoo Electronics Co., Anam Electronics Co., Korea Culture Broadcasting (MBC), Korea Broadcasting Corporation (KBS), Seoul Broadcasting (SBS) This is a corporate joint standard established by the company), which is the collective name for KBPS (Korea Broadcasting Program Service), and it is used when a broadcaster puts the current time, station name, and program list information in the reserved area of a TV broadcast signal. A system that demodulates this signal on a TV or VTR (Video Tape Recorder) and displays it on a TV monitor.

That is, in general, the carrier signal transmitting a TV signal has a free space (that is, a reserved area, etc.) for carrying other additional information in addition to the video signal and thus additional information such as text broadcasting information or K information. By transmitting the data in this free space, it is creating a video service of another aspect such as broadcast information guide, reservation recording, and the like.

A country that wants to introduce caption broadcasting for the first time, such as Korea, can only support the simple caption broadcasting and maintain the compatibility of the receiver even if it gradually supports the page mode.

Terminologies used herein are terms defined in consideration of functions in the present invention, which may vary according to the intention or customs of those skilled in the art, and the definitions should be made based on the contents throughout the present application. will be.

In addition, since the present invention has been described through the preferred embodiment of the present invention, in view of the technical difficulty aspects of the present invention, those having ordinary skill in the art can easily be different from another embodiment of the present invention. Since modifications may be made, it is obvious that both the embodiments and modifications cited in the above description belong to the claims of the present invention.

As described in detail above, in the caption broadcasting system, by adding a PAGE-START command, a CONTENTS command, and a PAGE-END command, a page that is a simple text display mode and an extended function is added. According to the method for supporting page mode of caption broadcasting according to the present invention, which supports all modes, it is possible to supplement the text mode of closed caption broadcasting to support systematic information retrieval and to add a function of selectively viewing each information. There is an advantage to that.

Claims (4)

In the page mode support method of a caption broadcasting system having a page memory for storing character data in units of pages: A first determining step of slicing only caption data carried in a vertical blanking period from an input composite video signal to determine whether a text start command for a text mode of caption broadcasting is detected in the caption data; A second determination step of determining whether a page start command or a content command is detected by receiving consecutive predetermined bits of data when the text start command is detected as a result of the determination of the first determination step; As a result of the determination in the second determination step, when the page start command is detected, the page data for displaying character data among the caption data is stored after separating the character data from the caption data in page units and storing the same in the page memory. Performing a page mode execution step; And When the content command is detected as a result of the determination of the second determination step, a text display mode execution step of performing a text display mode for storing text data of the current caption data in a text display memory for displaying on the screen as it is. Page mode support method of the caption broadcast, characterized in that the. The method of claim 1, wherein the performing of the page mode comprises: When the page start command is applied, a page number is set according to a page order, a content classification code of a predetermined predetermined bit is read, and it is determined whether the content command is authorized, and when the content command is applied, the content A first recording step of reading the character string from the classification code until the content instruction is found as a page title and recording the page number, the content classification code, and the page title in the page memory; When the page ending command is applied by determining whether a page ending command is detected while reading a character code subsequent to the content command, and a character code from the page after the content instruction until the page ending command is detected is expressed as a character code. A second recording step of writing to a memory; And After performing the second recording step, it is determined whether the text is off, and if the text is not off, returning to the first recording step, and if the text is off, the page mode support of caption broadcasting, characterized in that the step of terminating the data recording system Way. The method of claim 1, A text display key input determination step of determining whether a text display key is keyed to display the character data stored in the page memory on a television screen by a user's key selection; A display mode determination step of determining whether an operation mode for text display is a simple text display mode or the page mode when the text display key is keyed as a result of the determination of the text display key input determination step; A first display step of reading and displaying character data from the text display RAM when the simple text display mode is determined as the determination result of the display mode determination step; A second display step of displaying, on the screen, a classification table configured by the classification code if the page mode is determined as the determination result of the display mode determination step; A third display step of determining whether the user's selection of the classification list is completed and if the user's selection is completed, displaying a corresponding page on the screen; And After performing the third display step, it is determined whether the text display key is off, and if the text display key is not off, the display returns to the display mode determining step; otherwise, the step of terminating all data reading systems is further performed. Page mode support method of a caption broadcast, characterized in that it comprises a. The method of claim 3, wherein the classification table is A caption broadcasting page mode support method comprising a large classification list, a middle classification list, and a small classification list.