KR20110019096A - Setting method fof closed caption service information - Google Patents

Abstract

PURPOSE: A method for setting a closed caption service is provided to enable a user to easily and simply set a CC service according to a changed signal when a CC service different from a current service follows. CONSTITUTION: A CC(Closed Caption) service setup method comprises the following steps. It is determined whether a signal inputted to a display device is changed. If an input signal is changed, it is determined whether a CC(Closed Caption) service exists in an input signal. If a CC service exists, it is determined whether a CC service is changed by the change of an input signal. If the CC service is changed, an inquiry for setup is automatically displayed. The changed CC service is set if a key signal for the changed CC service setup is inputted.

Description

SETTING METHOD FOF CLOSED CAPTION SERVICE INFORMATION}

The present invention relates to a closed caption (CC) of a display device, and more particularly, to a CC service setting method for setting a CC service corresponding to a changed signal when an input signal is changed in the display device.

Early CCs developed for the deaf have been applied to all audio / video (A / V) media since the beginning of analog TV. The Federal Communications Commission (FCC) of the United States mandates that since analog TVs become popular, all TVs with a certain size or larger screen will have the ability to decode and display them on the screen. . Since digital TVs have begun to spread, as more advanced CCs are developed, so-called DTVCCs are mandated to be mounted on all digital TVs (DTVs) over a certain screen size.

CC data refers to caption data recorded in a predetermined region of a video signal, and CC service refers to a service for decoding CC data to display captions in a predetermined region on a screen. Recently, it is necessary for accurate spelling in children's spelling education, foreigner's English learning and noisy environment during sports relay. Unlike the open caption data, the CC data can be displayed or not according to a user's setting.

In analog TV, CC information is transmitted by encoding two bytes of information on two fields (Field1, Field2) of the 21st line of the vertical blanking interval (VBI) band. Services may be provided. In case of existing CC service, there are modes such as CC1 ~ CC4, Text1 ~ Text4, Service1 ~ Service6. For example, in North America, services that can be transmitted to analog CCs under EIA-608 include CC1 to CC4 and Text1 to Text4, which are captions for the first language for CC1 and CC2, and for CC3 and CC4. Captions for two languages. At this time, Text1 ~ Text4 and Service1 ~ Service6 not mentioned are additional information and service contents and are not actually captioned.

However, in the case of the conventional CC service, the CC service function previously set by the user is reflected as it is, so if another CC service information is loaded from another service, the user directly enters a user interface (UI). You must change the settings to see the changed CC service information.

Therefore, in the technical field, it is necessary to easily and simply change the setting of CC service information when a signal is changed and input in consideration of the user's convenience.

The present invention provides a CC service setting method for changing the setting to the CC service according to the changed signal by displaying the CC service corresponding to the changed signal through the UI when the signal input from the display device is changed. do.

The present invention includes the steps of determining whether the signal input to the display device is changed; Determining whether a closed caption (CC) service exists in the input signal when the input signal is changed; Determining whether the CC service is a CC service changed according to a change of the input signal if the CC service exists; Automatically displaying an inquiry about a change of the CC service and a setting to the changed CC service in the case of the changed CC service; And setting the changed CC service when the key signal for setting the changed CC service is input.

Selecting a menu of the display device before determining whether the input signal to the display device is changed; And turning on a CC plug and play function in the menu. It includes, and displays the query for the change of the CC service and the setting to the changed CC service only when the CC plug and play function is ON.

The inquiry about the change of the CC service and the setting of the changed CC service is displayed on a display screen through a user interface (UI) screen.

Determining whether the CC service is a changed CC service according to a change of the input signal includes comparing the stored CC service with a previously stored CC service.

According to the present invention, even when a CC service different from the current is loaded when the input signal is changed in the display device, the user can easily and simply set the CC service suitable for the changed signal.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. do.

According to the present invention, when the input signal is changed in the display device and the CC service information is changed to the changed signal, the changed information of the CC service information is displayed through the UI, and the user sets the CC service function corresponding to the currently changed signal. Provides a way to make changes. According to the embodiment of the present invention, when a CC service currently provided is changed as a signal is input or changed to a display device using a plug & play function, the present invention automatically recognizes this and applies the signal. Set the correct CC service.

In particular, the preferred embodiment of the present invention adds a CC plug and play ON / OFF function to the display device. Thus, when the CC service is changed when the input signal is changed while the CC plug and play is turned on, the fact is displayed through the UI. As a result, the user can easily and simply know that the CC service is changed according to the signal change without selecting another service, and furthermore, the user can conveniently set the CC service suitable for the current signal.

Hereinafter, the present invention will be described in more detail.

1 is a block diagram of a display apparatus for implementing a CC service configuration according to an embodiment of the present invention.

As shown in FIG. 1, the display apparatus 100 according to an exemplary embodiment of the present invention includes a signal receiver 101, a signal separator 102, an audio processor 103, an image processor 104, and an audio output unit. 105, an image output unit 106, a key input unit 107, a CC information reading unit 108, a memory unit 109, and a control unit 110. The display apparatus 100 according to the present invention is a device for outputting video and audio signals and has a function of setting a CC service.

The signal receiver 101 tunes a video / audio signal corresponding to a channel selected by a viewer among a plurality of digital signals received through an antenna (not shown) or a connected set-top box (STB), and transmits the tuned video / audio signal. Output to the signal separation unit 102. The signal separator 102 separates the received video / audio signal into an image signal and an audio signal, and then switches to the audio processor 103 and the image processor 104, respectively. The voice processor 103 processes the received voice signal to generate audible voice data. The voice data generated as described above is output to the outside through the voice output unit 105. In addition, the image processing unit 104 processes the image signal received from the signal separation unit 102 to generate a displayable image. The generated image is output to the outside through the image output unit 106. Here, in one embodiment of the present invention, the audio output unit 105 and the image output unit 106 may be implemented as a speaker and a display panel, respectively.

The key input unit 107 includes a plurality of key buttons such as numeric keys, character keys, and command keys to select a function supported by the display apparatus 100, and generates a corresponding key signal when a user inputs a desired key button. To the control unit 110. For example, when a key button for selecting a specific function is input from the key input unit 107, a key signal corresponding thereto is generated and output to the control unit 110 so that the specific function is driven. The key input unit 107 may be provided in the display apparatus 100 or implemented as a remote controller. The CC information reading unit 108 reads CC service information from the signal input to the signal receiving unit 101. In particular, when the signal input through the signal receiver 101 is changed, the CC information reader 108 detects CC service information included in the signal. The CC service information detected as described above is received by the control unit 110 and stored in the memory unit 109. The memory unit 109 stores a program for controlling and managing the overall operation of the display apparatus 100. In particular, the memory unit 109 stores respective driving programs for a menu function and a plurality of sub-functions included in the menu function.

The controller 110 controls the overall operations and functions of the display apparatus 100. In particular, when the control unit 110 receives a key signal input by the user through the key input unit 107, the control unit 110 outputs the control signal so that each function unit can perform a function corresponding to the key signal.

In this embodiment of the present invention, when the signal input to the display device is changed, the CC information reading unit 108 reads the CC service information included in the changed signal and transmits it to the control unit 110. The controller 110 determines whether a new CC service different from the currently provided CC service is changed to the changed signal, and if another CC service is input, the controller 110 drives the menu display function stored in the memory unit 109 to enter the image processor. The menu is displayed together with the image through the image output unit 106 in combination with the image signal processed at 104. This is to inform the user (viewer) of the change of the CC service according to the change of the input signal by automatically displaying the menu on which the image is displayed. This allows the user to easily and simply select and set the CC service suitable for the currently changed signal. Meanwhile, according to another embodiment of the present invention, when the CC plug and play function is set to ON, the changed CC service may be automatically displayed through the UI. That is, ON / OFF of the CC plug and play function can be selectively added as needed. Therefore, when the CC plug and play function is set to OFF, even if a changed CC service is received, it can be set not to be automatically displayed through the UI.

2 is an exemplary view showing a menu selection process for setting a CC service according to an embodiment of the present invention.

As shown in Fig. 2, the present invention includes a CC plug and play function in a menu function. The CC plug and play function is to set up to automatically notify the fact of the change of the CC service through the UI when a newly changed CC service is input to the changed signal when the signal input to the display apparatus 100 is changed. . When the user selects the menu using the key input unit 107, the menu is displayed as shown in FIG. The default value is determined by the shadow on the menu, and the user can select a lower function by moving the shadow up and down or by directly inputting the corresponding number using the key input unit 107. When the CC service setting function is selected in the present invention, a submenu is displayed as shown in FIG. When the CC plug & play function is selected in the same way, its submenu is displayed again as shown in FIG. The same method is used to select ON or OFF. In this case, when the CC plug & play ON is selected as described above, the changed CC service is automatically input through the UI. On the other hand, the CC plug & play function shown in Figure 2 can be selectively implemented by the user as needed.

3 is an exemplary diagram for notifying a change of a CC service according to an embodiment of the present invention.

As shown in FIG. 3, in the present invention, when a signal input from the display apparatus 100 is changed and a new CC service is changed to the changed signal, the UI screen 30 is displayed on the display screen, and the UI is displayed. On the screen 30, a notice for inquiring to change to the changed CC service is displayed while notifying the CC service change. Thus, when the CC service is changed as the input signal is changed while the program is being viewed, the user can automatically check this without selecting another service and set the CC service corresponding to the changed signal.

4 is a flowchart illustrating a CC service setting method according to an embodiment of the present invention.

As shown in FIG. 4, in the method of setting a CC service according to the present invention, first, it is determined whether the CC plug and play function is set to ON in the display apparatus 100 (S1). If the signal is turned on, an input signal is received (S2), and it is determined whether the signal is a changed signal instead of a currently provided signal (S3). If the signal is changed, the CC service information is checked in the changed signal (S4), and the existence of the CC service is determined (S5). If the CC service exists, the corresponding CC service information is stored (S6). Subsequently, it is determined whether the CC service is changed (S7). This is compared with the existing CC service already stored in the memory unit 109 determines whether it is different. If it is determined that the CC service is changed according to the changed signal, the CC service change is displayed through the UI (S8). As a result, the user can check the change of the CC service through the UI.

Subsequently, it is determined whether a key signal for changing the CC service setting is input (S9). If a key signal for changing the CC service setting is input, the setting is changed to the changed CC service (S10). This allows the user to easily and quickly set up a CC service suitable for the changed input signal.

As described above, the CC service setting method of the display apparatus according to the present embodiment reads and stores CC service information from the signal when the signal input to the display apparatus is changed and the CC service is changed to the changed signal. To be displayed via the UI. As a result, the CC service can be easily set by selecting the CC service corresponding to the changed signal in the display device.

Although the present invention has been described in detail with reference to exemplary embodiments above, those skilled in the art to which the present invention pertains can make various modifications to the above-described embodiments without departing from the scope of the present invention. Will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims, as well as the appended claims.

1 is a block diagram of a display apparatus for implementing a CC service configuration according to an embodiment of the present invention.

2 is an exemplary view showing a menu selection process for setting a CC service according to an embodiment of the present invention.

3 is an exemplary diagram for notifying a change of a CC service according to an embodiment of the present invention.

4 is a flowchart illustrating a CC service setting method according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: display device 101: signal receiving unit

102: signal separation unit 103: voice processing unit

104: image processing unit 105: audio output unit

106: image output unit 107: key input unit

108: CC information reading unit 109: memory unit

110: control unit

Claims (4)

Determining whether a signal input to the display device is changed; Determining whether a closed caption (CC) service exists in the input signal when the input signal is changed; Determining whether the CC service is a CC service changed according to a change of the input signal if the CC service exists; Automatically displaying an inquiry about a change of the CC service and a setting to the changed CC service in the case of the changed CC service; And Setting to the changed CC service when a key signal for setting the changed CC service is input; Closed caption (CC) service setting method comprising a. The method of claim 1, Before determining whether the input signal to the display device is changed, Selecting a menu of the display device; And Turning on a CC plug and play function in the menu; Including; Closed caption (CC) service setting method for automatically displaying the query for the change to the CC service and the setting to the changed CC service only when the CC plug and play function is ON. The method of claim 1, Closed caption (CC) service setting method for displaying the query for the change of the CC service and the setting to the changed CC service via a user interface (UI) screen on the display device. The method of claim 1, And determining whether the CC service is a changed CC service according to a change of the input signal, comparing the CC service with an existing stored CC service.

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