JP2006014004A - Two-screen television control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of a television having a two-screen function that setting of caption for a sub-screen is complicated and is inconvenient. <P>SOLUTION: The control method includes a process to display a caption for a first screen when setting of caption display for the first screen is "ON" during two-screen display mode, a process for suppressing caption display for the first screen when the setting of caption display for the first screen is "OFF", and a process which displays caption of the second screen at all times. Thus, inconvenience in use is settled. With an earphone connection detector 25 provided, caption of a sub-screen is not displayed when listening using an external audio output device, settling such discomfort as caption of sub-screen is automatically displayed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a two-screen television control method for a television apparatus equipped with a two-screen function for arbitrarily combining and displaying a first screen and a second screen and a caption function for displaying a caption on each.

  In a conventional two-screen television control method for a television apparatus equipped with a two-screen function and a caption function, whether caption display is performed on an arbitrary screen of the first screen (main screen) or the second screen (sub-screen) The subtitle display of the first screen (main screen) and the subtitle display of the second screen (subscreen) are performed according to the setting (for example, see Patent Document 1). .

  There are three main methods for realizing the setting of whether to display subtitles on the first screen (main screen) and the setting of whether to display subtitles on the second screen (subscreen).

  First, as shown in FIG. 10A, the first type is to switch whether or not to display subtitles on the first screen (main screen) on the remote control that controls the television and to display subtitles on the second screen (subscreen). It is equipped with a “subtitle” button that doubles whether or not to switch and a button for switching the operation target screen (“right operation” button), and operates the “two screen” button from the first screen in FIG. 10B. Then, two screens are displayed as shown in FIG. When the subtitle display on the main screen is switched, the “subtitle” button is pressed as it is as shown in FIGS. 10C to 10D, and when the subtitle display on the sub screen is switched, FIGS. 10C to 10E are displayed. Operation is performed by pressing the “Subtitle” button after pressing the “Right Operation” button as in (f).

  In the second type, as shown in FIG. 11 (a), the “menu” button on the remote control is operated to display a setting menu on the GUI (FIG. 11 (c)). 11 (d)) and subtitle display setting (FIG. 11 (e)) are switched.

  The third type is equipped with a “main screen subtitle” button for switching the subtitle display setting on the remote control and a “subscreen subtitle” button for switching the subscreen subtitle display setting on the remote control. Switch the subtitle display settings for each screen.

  First, a method implemented in a conventional television will be described by taking the system configuration of FIG. 1 as an example. Here, the configuration of FIG. 1 will be described as an example, but the configuration is not limited thereto.

  The conventional method can be realized by the configuration shown in FIG. 1. From the main screen tuner 16 that receives the video / audio signal from the antenna, the sub-screen tuner 20 that receives the video / audio signal from the antenna, and the main screen tuner 16. A main screen audio signal processing unit 18 for processing the audio signal of the sub screen, a sub screen audio signal processing unit 22 for processing the audio signal from the sub screen tuner 20, and a main screen for capturing subtitle data from the video signal from the main screen tuner 16. Subtitle control unit 15, subscreen subtitle control unit 19 that takes in subtitle data from the video signal from subscreen tuner 20, and subtitle data from main screen subtitle control unit 15 and subscreen subtitle control unit 19 are converted into on-screen signals. The on-screen display processing unit 23, the video signal from the main screen tuner 16, and the on-screen display processing unit 23. A main screen video signal processing unit 17 for processing a video signal, a sub screen video signal processing unit 21 for processing a video signal from the sub screen tuner 20 and an on screen signal from the on screen display processing unit 23, and a main screen video signal. A video composition processing unit 24 that synthesizes the video signal from the processing unit 17, the video signal from the sub-screen video signal processing unit 21, and the on-screen signal from the on-screen display processing unit 23, and a television control unit that controls the television apparatus 13, a remote control code decoding unit 11 for decoding a transmission code from the remote control, an event management unit 12 that judges an event input from the remote control code decoding unit 11 and issues an instruction to the television control unit 13, It is comprised from the memory | storage device 14 which memorize | stores a state mode.

  The storage device 14 stores the current state mode, which includes the screen mode, display mode, main screen subtitle setting, and sub-screen subtitle setting shown in FIG.

  The processing flow of the TV control unit 13, the main screen subtitle control unit 15, the sub screen subtitle control unit 19 and the on-screen display processing unit 23 will be described with reference to FIGS.

  As shown in FIG. 13, the television controller 13 first reads out the main screen subtitle setting from the storage device in STEP 101, and confirms in STEP 102 whether the main screen subtitle setting is ON. In the case of ON, subtitle ON is notified to the main screen subtitle control unit 15 in STEP103, and in the case of OFF, subtitle OFF is notified to the main screen subtitle control unit 15 in STEP104. Subsequently, in STEP 105, the screen mode and the display mode are read from the storage device, and in STEP 106, it is confirmed whether the screen mode is a two-screen display. In the case of one screen, subtitle OFF is notified to the sub-screen subtitle control unit 19 in STEP 107, and the screen mode and display mode are notified to the on-screen display processing unit 23 in STEP 112. In the case of two screens, the sub screen subtitle setting is called from the storage device 14 in STEP 108, and after confirming the sub screen subtitle setting in STEP 109, in the case of ON, the sub screen subtitle control is notified to the sub screen subtitle control in STEP 110. In the case of OFF, the sub screen subtitle control unit 19 is notified of subtitle OFF, and the screen mode and display mode are notified to the on-screen display processing unit 23 in STEP 112.

  In the main screen subtitle control unit 15, as shown in FIG. 14A, first, in STEP 201, it is confirmed whether there is a notification of the main screen subtitle ON from the TV control unit 13. Subtitle data is obtained from the video signal from the screen tuner, and the subtitle data is decoded in STEP 203 to determine the display position, color data, and character data. In STEP 204, the display position, color data, Notify character data. In the case of subtitle OFF notification, the process is directly exited.

  As shown in FIG. 14 (b), the sub-screen caption control unit 16 first confirms whether or not the sub-screen caption ON notification has been received from the TV control unit 13 in STEP 301. Subtitle data is acquired from the video signal from the screen tuner 20, and the subtitle data is decoded in STEP 303 to determine the display position, color data, and character data. In STEP 304, the on-screen display processing unit 23 displays the display position and color data. , Notify character data. In the case of subtitle OFF notification, the process is directly exited.

  As shown in FIG. 15, the on-screen display processing unit 23 first confirms whether a screen mode and a display mode are specified from the television control unit 13 in STEP 401. If there is a specification, the screen mode and display are displayed in STEP 402. According to the mode, the signal is converted into an on-screen signal and output to the video composition processing unit 24, and the process proceeds to STEP 403. If the screen mode and display mode are not specified, the process proceeds to STEP 403 as it is. Subsequently, in STEP 403, it is confirmed whether or not the main screen subtitle control unit 15 has notified the main screen subtitle display position, color data, and character data. If there is a notification, a display image is created in accordance with the display position, color data, and character data in STEP 404, the display image is converted into an on-screen signal, output to the main screen video signal processing unit 17, and the process proceeds to STEP 405. If there is no notification, the process proceeds to STEP 405 as it is. In STEP 405, it is confirmed whether or not the screen mode is the single screen mode. In the case of the two-screen mode, it is confirmed in STEP 406 whether or not the sub-screen subtitle control unit 19 has notified the sub-screen subtitle display position, color data, and character data. If notified, a display image is created in accordance with the display position, color data, and character data in STEP 407, and the display image is converted into an on-screen signal in STEP 408 and output to the sub-screen video signal processing unit 21 to exit. Thereafter, the on-screen signal output from the on-screen display processing unit 23 to the main screen video signal processing unit 17 and the sub-screen video signal processing unit 21 is output from the on-screen display processing unit 23 to the inner OSD and the video composition processing unit 24. The on-screen signal is defined as a local OSD and will be described.

  In this way, a two-screen caption display can be realized.

  Note that a television having a two-screen function has a single screen mode and a two-screen mode as screen modes. The two-screen mode makes the screen size of the main screen and the sub-screen equal. "Mode" and "two-screen mode 2" mode in which the vertical size of the main screen is adjusted to the vertical size of the television screen and the sub-screen is displayed in a small area in the remaining area.

  The screen mode is switched by pressing the “screen mode” button on the remote controller, through the remote control code decoding unit 11, and the event management unit 12 instructs the television control unit 13 to switch the screen mode. The processing unit is controlled to output an image corresponding to each screen mode to the display device 27 and store the current screen mode in the storage device 14.

Display images of the respective screen modes are shown in FIGS. 16 shows a display image in the single screen mode, FIG. 17 shows a display image in the double screen mode 1, and FIG. 18 shows a display image in the double screen mode 2.
JP 2002-314896 A

  In a normal television, the sound of the main screen is output from the sound output device, but the sound of the sub-screen is only output to the sound output terminal and is not output from the sound output device. That is, since the sub-screen does not output sound unless it is connected to an external audio output device, it cannot be said that the contents of the content displayed on the sub-screen can not be understood and the function of the two screens is fully exhibited. This problem can be solved by displaying subtitle subtitles, but the conventional method is not convenient.

  Also, as shown in the background art above, in order to realize the subtitle function, it is necessary to switch the setting of the subtitle display. To set the sub screen to display the subtitle, the first type In the method, after making two screens, the “right operation” button must be pressed to make the sub-screen the target of operation, and the “subtitle” button must be pressed. If included, it becomes 3 actions, the operation is complicated, and the usability is bad.

  For the second method, it is necessary to display the setting menu and select it with the cursor button, and at least three actions are required to set the sub screen subtitle to ON, and the operation is complicated. Is even more complex and unusable.

  With the third type of method, the number of remote control buttons tends to increase due to an increase in the number of broadcasting networks in modern television (currently, there are terrestrial analog methods, terrestrial digital broadcasting, BS digital broadcasting, and CS digital broadcasting) While there is a movement to reduce the number of buttons, it is unrealistic to have subtitle display setting buttons for both the main screen and subscreen, and the conventional method has not been able to fully demonstrate the functions of two screens. It was.

  As described above, the conventional method is difficult to use because it is difficult to set whether to display sub-screen captions, and the sub-screen audio is not output from the audio output device. There was a problem that I could not understand the contents of the contents.

  Therefore, an object of the present invention is to provide a two-screen television control method that is easy to use and that allows easy understanding of the contents of sub-screen content.

The two-screen television control method of the present invention uses a television apparatus having a two-screen function for displaying the first screen and the second screen side by side, and a caption display function for each of the first screen and the second screen. A two-screen television control method for controlling display of subtitles on a first screen and a second screen,
The step of displaying subtitles for the first screen when the subtitle display setting of the first screen is “ON”, and the first screen when the subtitle display setting of the first screen is “OFF” Including the step of suppressing the subtitle display for and the step of always displaying the subtitle on the second screen.

  In the above configuration, the television device includes a detection device that detects that the external audio output device is connected to the audio output terminal that outputs audio for the second screen, and the external audio output device is connected by the detection device. Receiving a signal indicating that the subtitle is displayed on the second screen.

  In the above configuration, the television device includes a plurality of modes for displaying the first screen and the second screen side by side, and the second screen in the case where the screen sizes of the first screen and the second screen are the same. In the mode of displaying the subtitle of the second screen in the screen of the second screen and the mode in which the screen size of the second screen is smaller than that of the first screen, the subtitle of the second screen is changed to the first screen and the first screen. A step of displaying outside the screen of the second screen.

  In the above configuration, when the subtitles of the second screen are displayed outside the screens of the first screen and the second screen, if the number of characters that can be displayed in one line is exceeded, the extra characters are displayed on the next line. The process includes a step of displaying in a folded manner.

  In the above configuration, the television apparatus has means for changing the color outside the first screen and the second screen, and displays the subtitles on the second screen outside the first screen and the second screen. The step of displaying the subtitle of the second screen by changing the background color or the character color when the contrast between the character color of the subtitle of the second screen and the background color is low.

  According to the two-screen television control method of the present invention, the sub-screen subtitle display is not turned on, and the sub-screen subtitle display is always turned on during the two-screen display. It is possible to solve the inconvenience due to the difficulty in setting whether or not to display and the problem that the contents of the sub screen cannot be easily understood.

  By detecting whether or not an external audio output device is connected to the audio output terminal that outputs the audio of the sub-screen during two-screen display, and not displaying subtitles on the sub-screen when connected , It is possible to eliminate the viewer's discomfort due to the sub screen subtitles being displayed when the viewer listens to the sub screen audio from the audio output terminal using the external audio output device. .

  In the case of two screens, when the sub-screen is smaller than the main screen, the subtitle display of the sub-screen is not displayed in the sub-screen, It is possible to solve the problem that subtitles on the sub screen are small and difficult to see, and to improve the visibility of subtitle display on the sub screen.

  When the sub screen is smaller than the main screen on two screens and the size of characters is enlarged and displayed in the area outside the sub screen, the portion exceeding the number of characters that can be displayed on one line is folded back to the next line. In order to increase the size of the subtitle characters by displaying, if it is necessary to display a character string that exceeds the number of characters that can be displayed on one line, the characters exceeding the number of characters cannot be displayed and the subtitle It is possible to solve the problem that the content cannot be accurately transmitted to the viewer, and to accurately transmit the content of the subtitles to the viewer.

  When displaying subtitles outside the video area, when the subtitle background color is specified to be translucent or transparent, the subtitle background color is combined with the gray color outside the video area, so that the text color and background color However, the contrast between the text color and the background color can be increased by changing the background color, and the visibility of the caption can be improved. Specifically, for example, recently, a television using a plasma display has been released, and in order to prevent the plasma display from being burned, the color of the portion outside the image area is set to an intermediate color such as gray instead of black. The idea is made not to stand out. In such a case, when displaying subtitles outside the video area, if the subtitle background color is specified to be translucent or transparent, the subtitle background color will be combined with the gray color outside the video area. Therefore, especially when the character color is white, the contrast between the background color gray and the character color white becomes low, making it difficult to see the subtitles.

(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS. The present invention is implemented by changing the processing of the conventional television control unit and the content of the storage device from the conventional system configuration, the processing of each processing unit, and the content of the storage device. There is no change in the processing of the processing units other than the television control unit among the processing of each processing unit.

  The system configuration is the same as the conventional one, but will be described again. The first embodiment of the present invention is implemented by the configuration shown in FIG. A main screen tuner 16 that receives video / audio signals from the antenna, a sub-screen tuner 20 that receives video / audio signals from the antenna, and a main screen audio signal processing unit 18 that processes audio signals from the main screen tuner 16. A sub-screen audio signal processing unit 22 that processes an audio signal from the sub-screen tuner 20, a main screen subtitle control unit 15 that captures subtitle data from the video signal from the main screen tuner 16, and a video from the sub-screen tuner 20. A sub-screen subtitle control unit 19 that captures subtitle data from the signal, an on-screen display processing unit 23 that converts subtitle data from the main screen subtitle control unit 15 and the sub-screen subtitle control unit 19 into an on-screen signal, and a main screen tuner 16 Main screen video signal processing unit 1 for processing the video signal from and the on-screen signal from the on-screen display processing unit 23 A sub-screen video signal processing unit 21 for processing a video signal from the sub-screen tuner 20 and an on-screen signal from the on-screen display processing unit 23, and a video signal and a sub-screen video signal from the main screen video signal processing unit 17. To decode a video code from the processing unit 21 and an on-screen signal from the on-screen display processing unit 23, a TV control unit 13 for controlling the TV device, and a transmission code from the remote controller Remote control code decoding unit 11, event management unit 12 that determines an event input from remote control code decoding unit 11 and issues an instruction to television control unit 13, and storage device 14 that stores the current state mode. .

  The current state mode is stored in the storage device 14, but the content is the same as that of the conventional storage device (FIG. 12) without the sub-screen caption setting, and the screen mode, display mode, main screen as shown in FIG. Configure with subtitle settings.

  The process of the television control unit 13 will be described with reference to FIG.

  The processing in FIG. 2 is obtained by deleting STEP 108, STEP 109, and STEP 111 from the processing of the conventional television control unit (FIG. 13).

  First, the main screen subtitle setting is read from the storage device 14 in STEP 101, and it is confirmed in STEP 102 whether the main screen subtitle setting is ON. In the case of ON, subtitle ON is notified to the main screen subtitle control unit 15 in STEP103, and in the case of OFF, subtitle OFF is notified to the main screen subtitle control unit 15 in STEP104. Subsequently, in STEP 105, the screen mode and the display mode are read from the storage device 14, and in STEP 106, it is confirmed whether the screen mode is a two-screen display. In the case of one screen, subtitle OFF is notified to the sub-screen subtitle control unit 19 in STEP 107, and the screen mode and display mode are notified to the on-screen display processing unit 23 in STEP 112. In the case of two screens, subtitle ON is notified to the subscreen subtitle control 19 in STEP 110, and the screen mode and display mode are notified to the on-screen display processing unit 23 in STEP 112.

  The processing flow of the main screen subtitle control unit 15, the sub screen subtitle control unit 19 and the on-screen display processing unit 23 is the same as that of the prior art, but will be described again with reference to FIGS.

  In the main screen subtitle control unit 15, as shown in FIG. 14A, first, in STEP 201, it is confirmed whether there is a notification of the main screen subtitle ON from the TV control unit 13. Subtitle data is acquired from the video signal from the screen tuner 16, and the subtitle data is decoded in STEP 203 to determine the display position, color data, and character data. In STEP 204, the display position and color data are displayed in the on-screen display processing unit 23. , Notify character data. In the case of subtitle OFF notification, the process is directly exited.

  As shown in FIG. 14B, the sub screen subtitle control unit 19 first checks in STEP 301 whether there is a sub screen subtitle ON notification from the TV control unit 13. Subtitle data is acquired from the video signal from the screen tuner 20, and the subtitle data is decoded in STEP 303 to determine the display position, color data, and character data. In STEP 304, the on-screen display processing unit 23 displays the display position and color data. , Notify character data. In the case of subtitle OFF notification, the process is directly exited.

  As shown in FIG. 15, the on-screen display processing unit 23 first confirms whether a screen mode and a display mode are specified from the television control unit 13 in STEP 401. If there is a specification, the screen mode and display are displayed in STEP 402. According to the mode, the local OSD is output to the video composition processing unit 24, and the process proceeds to STEP 403. If the screen mode and display mode are not specified, the process proceeds to STEP 403 as it is. Subsequently, in STEP 403, it is confirmed whether or not the main screen subtitle control unit 15 has notified the main screen subtitle display position, color data, and character data. If notified, a display image is created in accordance with the display position, color data, and character data in STEP 404, the display image is output to the main screen video signal processing unit 17 as an inner OSD, and the process proceeds to STEP 405. If there is no notification, the process proceeds to STEP 405 as it is. In STEP 405, it is confirmed whether or not the screen mode is the single screen mode. In the case of the two-screen mode, it is confirmed in STEP 406 whether the sub-screen subtitle control unit 21 has notified the sub-screen subtitle display position, color data, and character data. If notified, a display image is created in accordance with the display position, color data, and character data in STEP 407, and the display image is output to the sub-screen video signal processing unit 21 as an inner OSD in STEP 408, and exits.

  By carrying out in this way, it is possible to solve the difficulty of the operation of setting whether or not to display subtitles on the sub screen and the problem that the contents of the sub screen cannot be easily understood.

(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 4, the earphone terminal of the system configuration (same as the conventional system configuration of FIG. 1) is used in the earphone terminal of the system configuration according to the first embodiment, the processing of each processing unit, and the contents of the storage device. A detection device for detecting whether an external audio output device such as an earphone is connected, for example, an earphone connection detection unit 25 is added, and three steps are added to the processing of the television control unit 13 for implementation. There is no change in the processing of the processing units other than the television control unit 13 among the processing of each processing unit. Further, the contents of the storage device 14 are not changed.

  The addition of processing of the television control unit 13 will be described below.

  When STEP 1081, STEP 1082, and STEP 1083 are added as shown in FIG. 5 between STEP 106 and STEP 110 in the processing (FIG. 2) of the television controller 13 of the first embodiment, and the screen mode is two screens in STEP 106 Further, the connection state of the earphone is acquired from the earphone connection detection unit 25 in STEP 1081, the connection state is confirmed in STEP 1082, and if it is connected, the sub-screen caption control unit 19 turns off the caption in STEP 1083. If not connected, the process proceeds to STEP 110, and the sub screen subtitle control unit 19 is notified of the subtitle ON. Other processes may be the same as those in the first embodiment.

  By carrying out in this way, it is possible to eliminate the discomfort caused by displaying sub-screen subtitles when the viewer is listening to the audio of the sub-screen from the audio output terminal using an external audio output device It becomes.

(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. The present invention uses the system configuration of the second embodiment (FIG. 4), the processing of each processing unit, and the contents of the storage device 14 to perform the processing of the on-screen display processing unit 23 (the conventional on-screen display processing of FIG. 15). 2 steps are added to the same processing as the above processing. There is no change in the system configuration, the processing of each processing unit other than the on-screen display processing unit 23, and the contents of the storage device 14.

  The addition of processing by the on-screen display processing unit 23 will be described below.

  STEP4071 and STEP409 are added as shown in FIG. 6 after STEP407 of the processing of the on-screen display processing unit 23 of the second embodiment (same as the processing of the on-screen display processing unit of FIG. 15). When the subtitle subtitle display position, color data, and character data are notified from the screen subtitle control unit 19, a display image is created according to the color data and character data in STEP 407, and then the screen mode is added in STEP 4071. Is the two-screen mode 1 or the two-screen mode 2, and in the case of the two-screen mode 1, the display image is output to the sub-screen video signal processing unit 21 as the inner OSD at the display position notified in STEP 408. In the case of screen mode 2, the display image is set as a local OSD to a fixed position in the added STEP409. Carried out and outputs to the video synthesis processing unit 24. Other processes may be the same as those in the second embodiment.

  FIG. 19 shows a display image in which subtitles are displayed in the two-screen mode 1 and FIG. 21 shows a display image in which subtitles are displayed outside the sub-screen in the two-screen mode 2. FIG. 20 shows a display image in which the sub-screen display of the sub-screen is performed in the 2-screen mode 2 as in the second embodiment, and the sub-title becomes small and difficult to read.

  By implementing in this way, it becomes possible to improve the visibility of subtitle display on the sub screen when the sub screen is smaller than the main screen.

(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIG. The present invention is based on the system configuration of the third embodiment (same as the system configuration of the second embodiment of FIG. 4), the processing of each processing unit, and the contents of the storage device 14, and the on-screen display processing unit 23. Two steps are added to the process (FIG. 6). There is no change in the system configuration, the processing of each processing unit other than the on-screen display processing unit 23, and the contents of the storage device 14.

  The addition of processing by the on-screen display processing unit 23 will be described below.

  As shown in FIG. 7, STEP 4072 and STEP 4073 are added between STEP 4071 and STEP 409 of the processing of the on-screen display processing unit 23 according to the third embodiment (FIG. 6). In such a case, it is confirmed whether the display image created in STEP 407 in the added STEP 4072 exceeds the number of displayable characters in one line. In step 409, the display image is output to the video composition processing unit 24 as a local OSD at a fixed position. If the number of displayable characters is not exceeded, the display image created in STEP 407 is left as it is, and the display image is output to the video composition processing unit 24 as a local OSD at a fixed position in STEP 409. Other processes may be the same as those in the third embodiment.

  FIG. 22 is a diagram showing a display image in the case where the number of displayable characters in one line of subtitle display on the sub-screen is 6 characters in the 2-screen mode 2 with respect to FIG.

  By carrying out in this way, even when it is necessary to display a character string that exceeds the number of characters that can be displayed in one line, it is possible to accurately convey the content of the caption to the viewer.

(Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIGS. The present invention is based on the system configuration of the fourth embodiment (same as the system configuration of the second embodiment of FIG. 4), the processing of each processing unit, and the contents of the storage device 14, and the on-screen display processing unit 23. 2 steps are added to the above process (FIG. 7), and the color setting outside the video screen is added to the contents of the storage device 14 and executed. There is no change in the processing of each processing unit other than the system configuration and the on-screen display processing unit.

  The contents of the storage device 14 are set as shown in FIG. 8 by adding color settings outside the video screen to the contents (FIG. 3) of the storage device 14 of the first embodiment.

  The addition of processing by the on-screen display processing unit 23 will be described below.

  As shown in FIG. 9, STEP 40711 and STEP 40712 are added between STEP 4071 and STEP 4072 in the processing of the on-screen display processing unit 23 according to the fourth embodiment (FIG. 7). If the background color of the display image created in STEP 407 is semi-transparent or transparent in the added STEP 40711, the background color of the display image is black in STEP 40712 if the background color is semi-transparent or transparent. The display image is recreated and the process proceeds to STEP 4072. If the background color is not translucent or transparent, the process proceeds to STEP 4072 with the display image created in STEP 407 as it is. Thereafter, processing is performed in the same manner as in the fourth embodiment.

  Although the method for setting the color outside the video screen is not mentioned, the color setting outside the video screen is switched from the event management unit 12 to the television control unit 13 via the remote control code decoding unit 11 by operating the remote control. An instruction is issued, and each processing unit is controlled in accordance with the instruction, changes the color outside the video screen, and stores the current color setting outside the video screen in the storage device 14.

  FIG. 23 is a diagram showing an image of subtitle display on the sub screen when the screen mode is the two screen mode 2, the color setting outside the video screen is gray, and the background color of the display image is transparent according to the fourth embodiment. .

  FIG. 24 shows the subtitle display on the sub screen under the same conditions as in FIG. 23 (when the screen mode is 2 screen mode 2, the color setting outside the video screen is gray, and the background color of the display image is transparent) in the fifth embodiment. It is a figure which shows the image which changed the background color of black to black.

  By carrying out in this way, if the color of the portion outside the video area is set to an intermediate color such as gray instead of black, the contrast between the background color and the character color is reduced even if the subtitle is displayed outside the video area. Therefore, the visibility of captions can be improved.

  Here, in the fifth embodiment, the background color of the display image is described as translucent or transparent. However, the background color is not limited to these colors, and the background color is limited to changing the background color. The text color may be changed. Furthermore, the color settings outside the video screen of the contents of the storage device 14 are only black and gray, but are not limited to these colors.

  The two-screen television control method of the present invention is easy to use and has the effect that the contents of the sub-screen content can be easily understood, and the two-screen television control method is used. A great effect can be expected in a television receiver for terrestrial digital broadcasting, which is useful in a receiver and is expected to be spread in the future.

It is a block diagram which shows the system configuration | structure of the conventional and 1st Embodiment of this invention. It is a flowchart of a process of the television control part of 1st Embodiment. It is explanatory drawing which shows the content of the memory | storage device of 1st Embodiment. It is a block diagram which shows the system configuration | structure of 2nd Embodiment. It is a flowchart of a process of the television control part of 2nd Embodiment. It is a flowchart of a process of the on-screen display process part of 3rd Embodiment. It is a flowchart of a process of the on-screen display process part of 4th Embodiment. It is explanatory drawing which shows the content of the memory | storage device of 5th Embodiment. It is a flowchart of a process of the on-screen display process part of 5th Embodiment. (A) is a block diagram of a conventional remote control, (b), (c), and (d) are examples of procedures for setting subtitles on the main screen, and (b), (c), (e), and (f) are subtitle settings on the sub screen. It is explanatory drawing of the example of a procedure. (A) is a block diagram of a conventional remote controller, and (b), (c), (d), and (e) are explanatory diagrams of a procedure example of subtitle setting. It is explanatory drawing which shows the content of the conventional memory | storage device. It is a flowchart of the process of the conventional television control part. (A) is a flowchart of the process of the conventional main screen subtitle control part, (b) is a flowchart of the process of a subscreen subtitle control part. It is a flowchart of the process of the conventional on-screen display process part. It is a figure which shows the image of the conventional 1 screen mode. It is a figure which shows the image of the conventional 2 screen mode 1. FIG. It is a figure which shows the image of the conventional 2 screen mode 2. FIG. It is a figure which shows the image at the time of performing the subtitle display of a subscreen in 2 screen mode 1 of 3rd Embodiment. It is a figure which shows the image at the time of performing the subtitle display of a subscreen in 2 screen mode 2 of 2nd Embodiment. It is an image figure at the time of performing the subtitle display of a subscreen in 2 screen mode 2 of 3rd Embodiment. It is an image figure at the time of performing the subtitle display of a subscreen in 2 screen mode 2 of 4th Embodiment. It is an image figure at the time of performing the subtitle display of a subscreen in 2 screen modes 2 by making the outside of the video area of 4th Embodiment gray. It is an image figure at the time of performing the subtitle display of a subscreen in 2 screen mode 2 of 5th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Remote control code decoding part 12 Event management part 13 Television control part 14 Memory | storage device 15 Main screen subtitle control part 16 Main screen tuner 17 Main screen video signal processing part 18 Main screen audio | voice signal processing part 19 Sub screen subtitle control part 20 Sub screen tuner 21 Sub-screen video signal processing unit 22 Sub-screen audio signal processing unit 23 On-screen display processing unit 24 Video composition processing unit 25 Earphone connection detection unit

Claims (5)

Using a television apparatus having a two-screen function for displaying a first screen and a second screen side by side, and a caption display function for each of the first screen and the second screen, the first screen And a two-screen television control method for controlling display of subtitles on the second screen,
When the setting of caption display on the first screen is “ON”, the step of displaying captions on the first screen; and when the setting of caption display on the first screen is “OFF”, A two-screen television control method including a step of suppressing subtitle display on a first screen and a step of always displaying subtitles on the second screen.   The television apparatus includes a detection device that detects that an external audio output device is connected to an audio output terminal that outputs audio for the second screen, and the external audio output device is connected by the detection device. 2. The two-screen television control method according to claim 1, further comprising a step of receiving subtitle display on the second screen in response to a signal indicating   The television apparatus has a plurality of modes for displaying the first screen and the second screen side by side. In the case where the screen size of the first screen and the second screen is the same, the second screen In the mode of displaying the subtitle in the screen of the second screen and the mode in which the screen size of the second screen is smaller than that of the first screen, the subtitle of the second screen is displayed in the first screen. The two-screen television control method according to claim 1, further comprising a step of displaying the first screen and the second screen outside the screen.   When displaying the subtitles of the second screen outside the screens of the first screen and the second screen, if the number of characters that can be displayed on one line is exceeded, the extra characters are folded and displayed on the next line. The two-screen television control method according to claim 3, comprising a step of:   The television apparatus has means for changing colors outside the screens of the first screen and the second screen, and displays the subtitles of the second screen outside the screens of the first screen and the second screen. 5. The subtitle of the second screen is displayed by changing the background color or the character color when the contrast between the text color of the subtitle of the second screen and the background color becomes low. 2 screen TV control method.

Images