JP2008288709A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device capable of deterring a user from missing the content of emergency information. <P>SOLUTION: The television (display device) 1 has a tuner unit 2 which receives video information of a television broadcast, and an EAS message 30, a display unit 4 which displays the video information of the television broadcast, and the and EAS message 30 received by the tuner unit 2, and a control unit 6 which displays the received EAS message 30 on the display unit 4 together with the video information of the television broadcast and also continuously displays the EAS message 30 together with video information of a television broadcast of a channel switched to even when the channel of the video information of the television broadcast is switched to. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device, and more particularly to a display device including a receiving unit that receives video information and emergency information of a television.

  2. Description of the Related Art Conventionally, a display device including a receiving unit that receives television video information and emergency information is known. In addition, systems and devices for displaying received emergency information on a display unit or the like are known (for example, Patent Documents 1 and 2).

  Patent Document 1 discloses a text broadcasting system in an apparatus including a control unit and a television receiving unit (display unit). In the teletext system described in Patent Document 1, when it is determined that an emergency broadcast is being broadcast, the television receiver of the apparatus main body is in an on state or an off state (display screen is in a standby state). Even in this case, the emergency broadcast channel is forcibly displayed. When the television receiver is in the off state, the display screen is automatically turned on and the emergency broadcast channel is forcibly displayed.

  Further, Patent Document 2 discloses a digital broadcast receiving apparatus provided with a tuner unit. In the digital broadcast receiving apparatus described in Patent Document 2, when character superimposing data such as an emergency warning is received by the tuner unit while displaying an externally input video such as a DVD, it is based on the character superimposing data. It is configured to display the character superimpose simultaneously with the external input video.

Japanese Patent Laid-Open No. 10-145751 Japanese Patent Laid-Open No. 2003-230068

  However, the teletext system described in Patent Document 1 is configured to display an emergency broadcast channel even when the television receiver (display unit) is in an on state or an off state. There is no disclosure or suggestion about the case where the channel being displayed is changed by the user when the emergency broadcast channel is displayed. Therefore, it is considered that the content of the emergency broadcast is not displayed when the emergency broadcast channel is changed to another channel, and there is a problem that the user may miss the content of the emergency broadcast.

  Further, in the digital broadcast receiving device described in Patent Document 2, even when an external input video is displayed, a text superimposition such as an emergency broadcast is displayed simultaneously with the external input video, while a text such as an emergency broadcast is displayed. There is no disclosure or suggestion about the case where the channel being displayed is changed by the user when the supermarket is displayed. Therefore, it is considered that the character super is not displayed when the channel where the character super is displayed is changed to another channel, and there is a problem that the user may miss the contents of the emergency broadcast.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a display device that can prevent a user from overlooking the contents of emergency information. It is.

Means for Solving the Problems and Effects of the Invention

  A display device according to one aspect of the present invention includes a receiving unit that receives television video information and emergency information, a display unit that displays television video information and emergency information received by the receiving unit, and the received emergency information. Is displayed on the display unit together with the video information of the television, and when the channel of the television video information is switched, the emergency information is continuously displayed together with the video information of the television of the switched channel. And a control unit.

  In the display device according to this aspect, as described above, the control unit displays the received emergency information on the display unit together with the television video information, and also when the channel of the television video information is switched. By configuring the emergency information to be continuously displayed along with the television image information of the switched channel, the channel of the television image information is switched when the emergency information is displayed on the display unit. Even so, since the emergency information is continuously displayed together with the video information of the switched channel on the display unit, the user can visually recognize the emergency information even when the channel of the video information of the television is switched. Therefore, it is possible to suppress the user from overlooking the contents of the emergency information.

  In the display device according to the above aspect, preferably, the emergency information received by the receiving unit includes character information for notifying emergency content and display time information of the character information for notifying emergency content, and the control unit includes: Based on the display time information of the character information for notifying the urgent content, the display unit is configured to continue to display the character information for notifying the urgent content until the display time elapses. If comprised in this way, since the character information which notifies the emergency content of emergency information will continue to be displayed on a display part by control of a control part until display time passes, it is ensured that a user misses the content of emergency information. Can be suppressed. Moreover, in the display device which is the emergency information receiving side, the emergency information is displayed on the display unit based on the display time information of the character information for notifying the received emergency content. It is possible to set the display time of the desired time.

  In this case, preferably, the emergency information received by the receiving unit further includes length information of the character information for notifying the emergency content, and the control unit displays based on the length information of the character information for notifying the emergency content. It is configured to control to select a display method of character information for notifying the department of emergency content. If comprised in this way, based on the length of the character information which notifies urgent contents by a control part, for example, the display method displayed so that character information may be scrolled with respect to a display part, or a plurality of character information Since the display method such as the display method for dividing and displaying in rows is selected and displayed, the user can easily recognize the contents of the displayed emergency information.

  In the display device including a receiving unit that receives emergency information including the character information for notifying the emergency content and the display time information of the character information for notifying the emergency content, preferably, the control unit has a display time. The character that notifies the emergency content to the display unit even when the channel of the video information of the television is switched before the display time elapses. It is configured to control to keep displaying information. According to this configuration, the control unit controls the character information for notifying the emergency content on the display unit regardless of how many times the television channel is switched within the display time. The contents of emergency information can be recognized.

  In the display device including a receiving unit that receives emergency information including text information for notifying the emergency content, preferably, the control unit displays the text information for notifying the emergency content on the display unit based on the received emergency information. If the character information for notifying the emergency content is not displayed on the display unit, the television video information channel displayed on the display unit is changed to a dedicated channel for notifying emergency information. It is configured to control to automatically switch and display. If comprised in this way, even if it is judged by the control of a control part that the character information which notifies emergency contents on a display part is not displayed, it switches automatically to the exclusive channel which notifies emergency information, and emergency contents are displayed. Therefore, the user can recognize the received emergency information on the dedicated channel.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram illustrating a television according to an embodiment of the present invention. 2 and 3 are diagrams for explaining a method for displaying emergency information on a display unit of a television according to an embodiment of the present invention. FIG. 4 is a diagram showing emergency information data transmitted to a television according to an embodiment of the present invention. First, with reference to FIGS. 1-4, the structure of the television 1 by one Embodiment of this invention is demonstrated. In this embodiment, an example in which the present invention is applied to a television which is an example of a display device will be described.

  As shown in FIG. 1, a television 1 includes a tuner unit 2 including an antenna (not shown) that receives a signal transmitted from a broadcasting station, and a plurality of devices connected to an external device such as a personal computer or a DVD player. A specific signal is selected from a plurality of signals input from the external input board 3 including the terminal 3a, a display unit 4 including an LCD (Liquid Crystal Display), and the tuner unit 2 and the external input board 3, and the display unit 4 is selected. An AV switch 5 for output and a control unit 6 including a CPU for controlling each unit of the television 1 are provided. The television 1 also includes an input unit 7 having a plurality of buttons 7a for changing the volume, channel, etc. of the television 1 and changing settings. Further, the input unit 7 includes a receiving unit 7 b that receives a signal from the remote controller 20. The remote controller 20 can also perform operations such as changing the volume. A signal from the input unit 7 or the remote controller 20 is input to the control unit 6. Based on the signal, the control unit 6 controls each unit of the television 1 to perform predetermined processing. The tuner unit 2 is an example of the “reception unit” in the present invention.

  Further, the tuner unit 2 detects and demodulates a broadcast signal corresponding to a channel designated by the user among signals received by an antenna (not shown), and transmits the data obtained as a result via the control unit 6. It is configured to output to the AV switch 5. The tuner unit 2 also receives a signal including emergency information such as disaster information based on EAS (Emergency Alert System) or weather warning, and displays the emergency information based on the received signal via the AV unit 5. It is configured to output to the unit 4. Note that the EAS is an emergency alarm system, for example, a system that transmits emergency information by voice or text information so as to interrupt a television broadcast or a radio broadcast.

  The display unit 4 displays video and characters corresponding to a television broadcast video information signal input from the AV switch 5 or an emergency information signal based on EAS. Specifically, when an emergency information signal based on EAS is received while video information of a television broadcast is displayed on the display unit 4, it is displayed on the display unit 4 as shown in FIG. An EAS message 30 as character information corresponding to an emergency information signal based on EAS is displayed so as to overlap video information of a television broadcast.

  Here, in this embodiment, as shown in FIG. 2, the control unit 6 controls the display unit 4 to display text information (EAS message 30) of emergency information based on EAS together with video information of television broadcasting. To do. As shown in FIG. 3, even when the television broadcast video information channel is switched, the emergency information EAS message 30 based on the EAS is continuously displayed together with the television broadcast video information of the switched channel. It is comprised so that it may control. As the emergency information signal data based on the received EAS, data in a format such as the EAS message format 30a shown in FIG. 4 is received. The EAS message format 30a includes an alert text (data corresponding to the content of the EAS message 30 that notifies the urgent content) 30b, display time data (data corresponding to the display time of the EAS message 30 that notifies the urgent content) 30c, , The alert text length (data corresponding to the length information of the EAS message 30 for notifying the emergency content) 30d is included. These data are analyzed by the control unit 6, and an EAS message 30 created based on the analysis result is displayed on the display unit 4.

  As shown in FIG. 1, the control unit 6 is configured to control the television 1 according to various setting information stored in the EEPROM 8 and a program stored in the ROM 9. The various setting information in the EEPROM 8 includes, for example, settings related to display on the display unit 4. Specifically, the setting related to viewing restrictions, the setting of captions (subtitles), the setting of languages, and the like. The EEPROM 8 can write and erase data, and whenever the user changes the setting information by the input unit 7 or the like, the changed setting information is written to the EEPROM 8. The SDRAM 10 is a memory in which data is temporarily stored when operations such as data processing by the control unit 6 are performed.

  FIG. 5 is a flowchart showing a control flow when an emergency information signal is received in the control unit of the television according to the embodiment of the present invention. Next, with reference to FIGS. 1-5, the control operation | movement at the time of receiving the emergency information signal based on EAS by the control part 6 of the television 1 by one Embodiment of this invention is demonstrated.

  As shown in FIG. 5, first, in step S1, it is determined whether or not the EAS message format 30a (see FIG. 4) has been received. If it is determined that the EAS message format 30a has been received, the process proceeds to step S2, and the received EAS message format 30a is analyzed by the control unit 6 (see FIG. 1). If it is determined that the EAS message format 30a has not been received, this determination is repeated until it is determined that the EAS message format 30a has been received. Then, based on the result of the analysis of the EAS message format 30a in step S2, in step S3, the EAS message 30 corresponding to the data (alert text 30b) included in the received EAS message format 30a is a new EAS message. Whether or not 30 is determined. That is, it is determined whether or not the EAS message 30 is not displayed. If it is determined in step S3 that the received EAS message 30 is not a new EAS message 30, the process returns to step S1 and the same processing is repeated. That is, in order to prevent the EAS message 30 having the same content from being repeatedly displayed on the display unit 4, it is determined whether or not it is a new EAS message 30 in step S3.

  Next, when it is determined that the EAS message 30 received in step S3 is a new EAS message 30, in step S4, the EAS message 30 corresponding to the data (alert text 30b) included in the EAS message format 30a is displayed. It is determined whether or not to display. If it is determined that the EAS message 30 is to be displayed, the process proceeds to step S5, where the EAS message 30 is based on the data (alert text 30b, display time data 30c, and alert text length 30d) included in the EAS message format 30a. Set the display method.

  Here, in the present embodiment, the control unit 6 changes the display method of the EAS message 30 on the display unit 4 based on the data of the alert text length 30d that is data indicating the length of the EAS message 30 that notifies the emergency content. Control to select and set. Specifically, as described above, a method of scrolling the screen of the display unit 4 according to the length of the EAS message 30 or a method of displaying the EAS message 30 divided into a plurality of lines is selected. The At this time, the control unit 6 sets the content of the EAS message 30 to be displayed on the display unit 4 based on the data of the alert text 30b, which is data corresponding to the content of the EAS message 30 for notifying the emergency content. The display time of the EAS message 30 on the display unit 4 is set based on the display time data 30c that is data corresponding to the display time of the EAS message 30 that notifies the content. Then, the process proceeds to step S6, and the EAS message 30 is displayed on the display unit 4 based on the setting content in step S5 (see FIG. 2), and the process proceeds to step S7, and EAS is performed based on the display time set in step S5. Countdown of the display time of the message 30 is started.

  Then, the process proceeds to step S8, and it is determined whether or not there is an instruction to switch the channel of the video information of the television broadcast. If it is determined that there is an instruction to switch channels, the process proceeds to step S9 to switch to the designated channel and display video information corresponding to the switched channel on the display unit 4. In step S10, control is performed so that the EAS message 30 is continuously displayed.

  Here, in this embodiment, when the channel of the video information of the television broadcast is switched before the display time of the EAS message 30 elapses, control is performed so that the EAS message 30 is continuously displayed on the display unit 4. Specifically, as shown in FIG. 2, when the EAS message 30 is displayed during the display of the 6-channel video information in the television broadcast, as shown in FIG. Even when the channel video information is displayed, the EAS message 30 continues to be displayed. As shown in FIGS. 2 and 3, the display unit 4 displays the channel number 4a that is currently displayed. That is, the display unit 4 shown in FIG. 2 displays 6 channels, and the display unit 4 shown in FIG. 3 displays 7 channels. Further, the EAS message 30 displayed on the display unit 4 shown in FIGS. 2 and 3 indicates that the message is displayed while scrolling.

  In step S11, it is determined whether the display time set in step S5 has elapsed. If it is determined that the display time has not elapsed, the process returns to step S8, and the processes in steps S8 to S11 are repeated until it is determined in step S11 that the display time has elapsed. If it is determined in step S8 that there is no instruction to switch the channel of the video information of the television broadcast, the process proceeds to step S11, and the same processing as described above is performed in step S11.

  Here, in the present embodiment, the control unit 6 performs control so that the EAS message 30 is continuously displayed on the display unit 4 until the display time elapses based on the display time of the EAS message 30. That is, in step S11, the control unit 6 performs control so that the EAS message 30 is continuously displayed even if the user switches the channel a plurality of times until it is determined that the display time has elapsed.

  If it is determined in step S11 that the display time has elapsed, the process proceeds to step S12, where the display of the EAS message 30 is terminated and the process is terminated.

  In this embodiment, when it is determined in step S4 that the EAS message 30 is not displayed, the process proceeds to step S13, where the display time is set based on the display time data 30c of the EAS message format 30a, and in step S14. Then, the control unit 6 performs control so that the channel of the television broadcast video information displayed on the display unit 4 is automatically switched to a dedicated channel (not shown) for notifying emergency information and displayed.

  In step S14, the video information of the EAS dedicated channel is displayed. At the same time, the countdown of the display time is started in step S15. Then, the process proceeds to step S16, and if it is determined that the display time has elapsed, the process proceeds to step S17, and the video information corresponding to the channel displayed on the display unit 4 before switching to the EAS dedicated channel is displayed. The process ends. On the other hand, if it is not determined in step S16 that the display time has elapsed, this determination is repeated until it is determined that the display time has elapsed.

  In the present embodiment, as described above, the control unit 6 displays the received EAS message 30 on the display unit 4 together with the video information of the television broadcast, and also when the channel of the video information of the television broadcast is switched. The EAS message 30 is controlled so as to be continuously displayed together with the video information of the television broadcast of the switched channel, whereby the television broadcast is displayed when the EAS message 30 is displayed on the display unit 6. Even if the channel of the video information is switched, the EAS message 30 is continuously displayed on the display unit 4 together with the video information of the switched channel. Therefore, the user is urgent even if the channel of the video information of the television broadcast is switched. Information can be visually recognized. Therefore, it is possible to suppress the user from overlooking the contents of the emergency information.

  In the present embodiment, the EAS message format 30a as the data of the EAS message 30 received by the tuner unit 2 includes an alert text (data corresponding to the content of the EAS message 30 for notifying the emergency content) 30b, and a display time. Data (data corresponding to the display time of the EAS message 30 for notifying the emergency content) 30c, and the control unit 6 sends the EAS message 30 to the display unit 4 based on the display time data 30c until the display time elapses. By configuring the control so as to continue to display, the control unit 6 controls the EAS message 30 to be continuously displayed on the display unit 4 until the display time elapses. It can be surely suppressed. Moreover, in the television 1 which is the receiving side of the EAS message format 30a, the EAS message 30 is displayed on the display unit 4 based on the display time data 30c of the received EAS message format 30a. The display time of the EAS message 30 can be set to a desired time.

  In the present embodiment, the EAS message format 30a received by the tuner unit 2 includes data of an alert text length (data corresponding to the length information of the EAS message notifying emergency contents) 30d, and the control unit 6 The control unit 6 is configured to control to select the display method of the EAS message 30 on the display unit 4 based on the alert text length 30d data. Control is performed so that the display method such as a display method for scrolling the EAS message 30 on the display unit 4 or a display method for displaying the EAS message 30 divided into a plurality of lines can be selected and displayed. Therefore, the user can recognize the content of the emergency information displayed easily.

  In the present embodiment, the control unit 6 is controlled so as to continue displaying the EAS message 30 on the display unit 4 until the display time elapses, and the channel of the video information of the television broadcast before the display time elapses. By switching so that the EAS message 30 is continuously displayed on the display unit 4 even when the display is switched, the control unit 6 controls how many times the television broadcast channel is switched within the display time. The EAS message 30 continues to be displayed on the display unit 4 even if the user is able to recognize the contents of the emergency information.

  In the present embodiment, the control unit 6 determines whether or not to display the EAS message 30 on the display unit 4 based on the received EAS message format 30a, and determines not to display the EAS message on the display unit 4. In such a case, the control unit 6 is configured to control so that the channel of the video information of the television broadcast displayed on the display unit 4 is automatically switched to a dedicated channel for notifying emergency information and displayed. Even if it is determined by the control that the EAS message 30 is not displayed on the display unit 4, the user is automatically switched to the dedicated channel for notifying emergency information and displayed, so that the user recognizes the received emergency information on the dedicated channel. be able to.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, an example in which the display unit 4 is an LCD has been shown. However, the present invention is not limited to this, and the display unit 4 may be configured by a PDP (Plasma Display Panel) or a CRT (Cathode Ray Tube).

  Moreover, in the said embodiment, even if the channel of the video information of a television broadcast is switched when the EAS message 30 as emergency information based on EAS is displayed on the display part 4, with the video information of the switched channel. Although the example in which the EAS message 30 is continuously displayed has been shown, the present invention is not limited to this, and if emergency information that can be displayed as text information can be received, text information based on emergency information by a system other than EAS is displayed on the display unit 4. Even when the information is displayed on the screen, the emergency information may continue to be displayed together with the video information of the channel switched when the channel is switched.

  In the above embodiment, an example has been shown in which the EAS message 30 as emergency information is continuously displayed even if the channel is switched until the display time has elapsed. If it is determined that the emergency information has been displayed, the display of the emergency information may be terminated.

It is a block diagram which shows the television by one Embodiment of this invention. It is a figure for demonstrating the display method of the emergency information in the display part of the television by one Embodiment of this invention shown in FIG. It is a figure for demonstrating the display method of the emergency information in the display part of the television by one Embodiment of this invention shown in FIG. It is the figure which showed the data of the emergency information transmitted to the television by one Embodiment of this invention shown in FIG. It is the flowchart which showed the control flow at the time of receiving the emergency information signal in the control part of the television by one Embodiment of this invention shown in FIG.

Explanation of symbols

1 Television (display device)
2 Tuner unit (receiver)
4 Display unit 6 Control unit 30 EAS message (emergency information)
30b Alert text (character information to notify emergency content)
30c Display time data (Display time information of character information to notify urgent contents)
30d Alert text length (length information of character information for notifying emergency content)

Claims (5)

A receiver for receiving television image information and emergency information;
A display unit that displays video information and emergency information of the television received by the receiving unit;
The received emergency information is displayed on the display unit together with television video information, and the emergency information is displayed together with the television video information of the switched channel when the channel of the television video information is switched. And a control unit that controls to continuously display. The emergency information received by the receiving unit includes character information for notifying emergency content, and display time information for character information for notifying emergency content,
The control unit controls based on a display time of character information for notifying the emergency content so as to continue displaying character information for notifying the emergency content on the display unit until the display time elapses. The display device according to 1. The emergency information received by the receiving unit further includes length information of character information notifying the emergency content,
The display according to claim 2, wherein the control unit controls the display unit to select a display method of character information for notifying the emergency content based on length information of character information for notifying the emergency content. apparatus.   The control unit controls the display unit to continue displaying character information for notifying the emergency content until the display time elapses, and the video information channel of the television before the display time elapses. 4. The display device according to claim 2, wherein control is performed so that character information for notifying the emergency content is continuously displayed on the display unit even when switching is performed.   The control unit determines whether or not to display the text information for notifying the emergency content on the display unit based on the received emergency information, and displays the text information for notifying the emergency content on the display unit. 5. The control according to claim 2, wherein, when it is determined not to be performed, control is performed so that the channel of the video information of the television displayed on the display unit is automatically switched to a dedicated channel for notifying emergency information and displayed. The display device according to claim 1.

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