JP5147502B2 - Display device and control method thereof - Google Patents

Description

  The present invention relates to a display device that displays information according to status information of a display device and status information of an information device connected to the display device, and a control method therefor.

  In recent years, users connect various information devices such as a BD (Blu-ray Disk (registered trademark)) recorder and a digital video camera (hereinafter referred to as DV camera) to a television (hereinafter referred to as TV). be able to.

On the other hand, a TV is proposed that receives status information indicating the state of the device from another device connected via a network or the like and displays the state of the device on a sub display (Patent Document 1).
JP-A-2005-244807

  By the way, when an information device such as a BD recorder is connected to the TV and used, the information device outputs video to the TV even though the TV is turned off. It may be considered that the information device does not perform the operation intended by the user. In such a case, notifying the user of information prompting the user to deal with the information device is beneficial because it may give the user an opportunity to deal with the information device that is not operating as intended. is there.

  However, in the technique disclosed in Patent Document 1, only the status of the device is displayed on the sub-display based on the status information received from another device, and the information is also taken into account by considering the status of the TV itself. No consideration is given to displaying on the sub-display.

  For this reason, in the technique disclosed in Patent Document 1, when it is considered that the information device is not performing the operation intended by the user based on the state of the TV, the user is notified of information that prompts the user to deal with the information device. There was a problem that it was not possible.

  The present invention has been made to solve the above-described problem, and appropriately prompts the user to deal with the information device according to the status information of the display device and the status information of the information device connected to the display device. An object is to provide a display device for displaying information and a control method thereof.

In order to achieve the above object, a display device of the present invention is a display device including a main display and a sub display that are communicably connected to an information device and capable of independently controlling on / off display. A set of management means for managing status information of the main display , receiving means for receiving status information of the information equipment from the information equipment, statuses that can be taken by the information equipment, and statuses that can be taken by the main display. holding means for holding in advance a table that associates each message to be displayed on the secondary display, and status information of the main display, wherein the managing means, according to the combination of the status information of the information device received by the receiving unit, select the messages held in the holding means, the selected message And having a display control means for displaying on the secondary display.

In order to achieve the above object, the display device control method of the present invention includes a main display and a sub display that are communicably connected to an information device and capable of independent on / off display control. A control method for a display device, comprising: a management step for managing status information of the main display ; a reception step for receiving status information of the information device from the information device; a status that can be taken by the information device; and the main display A holding process that holds in advance a table that associates messages to be displayed on the secondary display with a set of statuses that can be taken , status information of the main display managed by the management process, and the information device received by the receiving process according to the combination of the status information, the message which the holding step holds selection of And characterized by having a display control step of displaying the selected message to the secondary display.

  As described above, the present invention appropriately displays information that prompts the user to deal with the information device according to the status information of the display device and the status information of the information device connected to the display device. Make it possible.

Example 1
FIG. 1 is a system configuration diagram including a TV 100 as a display device and a BD recorder 101 as an information device. In this embodiment, the TV 100 is used as the display device, but the display device in the present invention is not limited to the TV 100.

  In this embodiment, the BD recorder 101 is used as the information device, but the information device in the present invention is not limited to the BD recorder 101. In this embodiment, it is assumed that the TV 100 and the BD recorder 101 are communicably connected via an HDMI cable, but are not limited to the HDMI cable.

  The TV 100 in the present embodiment displays on the main display unit 102 video of a TV broadcast program and video output from the BD recorder 101 connected to the TV 100. Also, the TV 100 displays a message related to the BD recorder 101 on the secondary display unit 103 as handling information. Here, the handling information is information for prompting the user to deal with the information device.

  Accordingly, in this embodiment, the sub display unit 103 corresponds to a display unit. In the present embodiment, the secondary display unit 103 only needs to have a resolution and size sufficient to display a message, and therefore, a sub-display unit 103 having a smaller resolution and size than the main display unit 102 is used. In this embodiment, a message is displayed as the handling information, but the present invention is not limited to this. Instead of a message, an icon may be displayed, or a combination of an icon and a message may be displayed.

  The BD recorder 101 in the present embodiment can transmit the status information of the BD recorder 101 to the TV 100 as the status information of the information device in addition to video and audio. Here, the status information of the information device is information indicating an operation state of the information device such as “standby” or “reproducing”. Note that the BD recorder 101 in this embodiment transmits the status information to the TV 100 every time it is operated by the user.

  FIG. 2 is a block diagram showing a schematic configuration of the TV 100 in Embodiment 1 of the present invention.

  The tuner unit 105 performs processing such as demodulation and error correction on the broadcast signal received via the antenna 104. Then, the tuner unit 105 generates a transport stream (TS) and outputs the generated TS to the separation unit 106.

  The separation unit 106 acquires video data and audio data from the TS input by the tuner unit 105. Then, the separation unit 106 outputs the acquired video data and audio data to the decoding unit 107. The decoding unit 107 decodes the video data and audio data input from the separation unit 106 and outputs them to the control unit 112 described later.

  The communication unit 108 receives video data, audio data, and status information from the BD recorder 101 connected to the TV 100. Then, the communication unit 108 outputs the received video data and audio data to the control unit 112. Further, the communication unit 108 outputs the received status information and the reception time of the status information to the holding unit 110. The reception time of the status information is the time acquired from the time management unit 109 that manages the current time by the communication unit 108 when the status information is received from the BD recorder 101.

  The holding unit 110 holds a status table as shown in FIG. 3 in which status information reception time is associated with status information. The holding unit 110 receives information regarding the status table from the communication unit 108. In the status table shown in FIG. 3, the status of the BD recorder 101 becomes “standby” at time “xx: yy: 15”, for example, when the user turns on the power of the BD recorder 101 at the time “xx: yy: 15”. It represents that.

  The row R102 indicates that the status of the BD recorder 101 becomes “tray open”, for example, when the user opens the media tray of the BD recorder 101 at time “xx: yy: 25”. Yes. Further, the row R103 indicates that the status of the BD recorder 101 becomes “standby” at the time “xx: yy: 35”, for example, because the user closed the media tray of the BD recorder 101. Yes.

  The holding unit 110 holds a display message table as shown in FIG. 4 in which the status information of the information device is associated with the status information of the TV 100, the message display necessity information, and the display message. Hereinafter, the display message table will be described. First, the status information of the TV 100 is information indicating the status of the TV 100 such as “standby state” and “displaying information device video”, for example. The standby state will be described later.

  Next, the message display necessity information is information indicating whether a message needs to be displayed. If the message needs to be displayed, the value of the information is “necessary”, and if not necessary, the value of the information is “no”. Finally, the display message is information indicating a message to be displayed to the user, and the value when there is no message is “NULL”. Each row of the display message table shown in FIG. 4 will be described in detail later.

  The display determination unit 111 acquires the latest status information of the information device from the status table held by the holding unit 110. Further, the display determination unit 111 acquires status information of the TV 100 from the control unit 112 described later. Further, the display determination unit 111 acquires a display message from the display message table held by the holding unit 110 according to the latest status information of the information device and the status information of the TV 100. Then, the display determination unit 111 having a display control function outputs the acquired display message to the sub display unit 103 and causes the sub display unit 103 to display the message. Such message display determination processing will be described later with reference to FIG. The sub display unit 103 displays the display message input from the display determination unit 111.

  The control unit 112 receives video data and audio data from the decoding unit 107 and the communication unit 108. Then, the control unit 112 selects the input source of the video data output to the main display unit 102 and the audio data output to the speaker 113 according to the input switching operation by the user, among the decoding unit 107 and the communication unit 108. Switch to either one. Note that the user may perform such an input switching operation using a remote controller (not shown) that can operate the TV 100, or may also operate using an operation unit (not shown) that can also operate the TV 100. good.

  The control unit 112 deletes all status information from the status table held by the holding unit 110 when the communication unit 108 does not receive the status information for a certain period of time. Thereby, it is possible to prevent the holding unit 110 from continuing to hold the status information even though the BD recorder 101 is removed from the TV 100.

  Further, the control unit 112 manages status information of the TV 100. Then, when instructed by the display determination unit 111, the control unit 112 outputs the status information of the TV 100 to the display determination unit 111.

  Here, the “standby state”, “displaying a broadcast program for a fixed time” state, and “displaying information device video” state, which are possible values of status information of the TV 100, will be described. First, in the “standby state”, power is not supplied to all the components of the TV 100, but power is supplied only to the minimum necessary components, status information from the information device is received, and the sub display unit 103 is supplied. In this state, information prompting the user to deal with the information device can be displayed.

  In the present embodiment, power is supplied only to the communication unit 108, the time management unit 109, the holding unit 110, the display determination unit 111, and the sub display unit 103 in the standby state. Therefore, the display determination unit 111 in the present embodiment can execute the message display determination process even in the standby state.

  Next, the state of “displaying a broadcast program for a certain period of time” is a state in which the TV 100 continuously displays a video of a program included in the received broadcast signal for a certain period of time. When the user performs an input switching operation for the purpose of displaying the video output from the information device on the TV 100, the video of the broadcast program may be displayed during the input switching operation. In such a case, even if the video of the broadcast program is displayed, since the user switches the input so that the video output by the information device is displayed immediately thereafter, it is effective to execute the message display determination process. Is hard to say. For this reason, in the present embodiment, the state where “the broadcast program is being displayed for a certain period of time” is set so that the message display determination process can be executed when the video of the program is continuously displayed for a certain period of time.

  Finally, the “information device video display” state is a state in which the TV 100 is displaying video input from the information device connected to the TV 100.

  The main display unit 102 displays a video based on the video data input from the control unit 112. The speaker 113 outputs sound based on the sound data input from the control unit 112.

  Next, each row of the display message table shown in FIG. 4 held by the holding unit 110 will be described in detail.

  First, in the row R201, when the status information of the information device is “standby” and the status information of the TV 100 is “standby”, a message is displayed on the secondary display unit 103 (message display necessity information is displayed). "Necessary"). The message is “Please check that the information device connected to the TV is turned on.” In such a case, the message is displayed because the information device is in a standby state and is turned on even though the TV 100 is in a standby state, and the information device performs an operation not intended by the user. This is to prompt the user to deal with the problem.

  Next, the row R202 indicates that a message is displayed on the sub display unit 103 when the status information of the information device is “playing” and the status information of the TV 100 is “standby state” (message display necessity information). Indicates “necessary”). The message is “Please check because the information device connected to the TV is playing”. In such a case, the message is displayed when the information device is reproducing the video, but the TV 100 is not displaying the video in the standby state, and the information device is intended by the user. This is for prompting the user to cope with the problem.

  In the row R203, when the status information of the information device is “playing” and the status information of the TV 100 is “displaying a broadcast program for a certain period of time”, a message is displayed on the sub display unit 103 (message display). Necessity information indicates “necessary”). The message is “You are watching a broadcast program, but the information device is playing, so please check.” In such a case, the message is displayed when the information device is playing a video, but the TV 100 displays a TV broadcast program instead of the video, and the information device is not intended by the user. This is for prompting the user to cope with the possibility of the operation.

  On the other hand, in the row R204, when the status information of the information device is “standby” and the status information of the TV 100 is “displaying information device video”, no message is displayed on the sub display unit 103 (message display necessity / unnecessity). The information indicates “No”). The message is not displayed in such a case because the TV 100 is displaying the video that the information device is outputting while on standby, and it is not necessary to prompt the user to deal with it.

  Next, the row R205 indicates that no message is displayed on the sub display unit 103 when the status information of the information device is “playing” and the status information of the TV 100 is “displaying information device video” (message display). Necessity information indicates “No”. The message is not displayed in such a case because the TV 100 is displaying the video that is being played back by the information device, and it is not necessary to prompt the user to deal with it.

  Finally, the row R206 indicates that no message is displayed on the sub display unit 103 when the status information of the information device is “recording” and the status information of the TV 100 is “standby” (message display necessity information). Indicates “No”). The message is not displayed in such a case because the information device is recording even when the TV 100 is in the standby state, and it is not necessary to prompt the user to deal with it.

  Next, a message display determination process for displaying a message prompting the user to deal with the information device when the information device connected to the TV 100 performs an operation not intended by the user will be described. The display determination unit 111 executes this process. FIG. 5 is a flowchart showing the message display determination process.

  The display determination unit 111 repeatedly executes this processing at regular time intervals while the status information of the information device exists in the status table held by the holding unit 110, that is, while the information device is connected to the TV 100. To do.

  In step S <b> 101, the display determination unit 111 acquires the latest status information of the information device connected to the TV 100 from the status table held by the holding unit 110.

  In step S <b> 102, the display determination unit 111 acquires status information of the TV 100 from the control unit 112. Note that if the status information of the TV 100 cannot be acquired from the control unit 112, the display determination unit 111 assumes that the status information of the TV 100 is “standby state”.

  In step S103, the display determination unit 111 determines whether or not it is necessary to prompt the user to deal with the problem. Specifically, first, the display determination unit 111 displays message display necessity information associated with the status information of the information device acquired in step S101 and the status information of the TV 100 acquired in step S102 from the display message table. To get.

  The display determination unit 111 determines that the user needs to be addressed when the acquired message display necessity information is “necessary”, and when the acquired message display necessity information is “no”. It is determined that there is no need to prompt the user to deal with it. The display determining unit 111 proceeds to step S104 when determining that it is necessary to prompt the user to deal with, and proceeds to step S105 when determining that it is not necessary.

  In step S104, the display determination unit 111 causes the sub display unit 103 to display a display message according to the status information of the information device acquired in step S101 and the status information of the TV 100 acquired in step S102.

  Specifically, the display determination unit 111 acquires a display message associated with the status information of the information device acquired in step S101 and the status information of the TV 100 acquired in step S102 from the display message table. Then, the display determination unit 111 causes the sub display unit 103 to display the acquired display message.

  In step S105, the display determination unit 111 deletes the display on the sub display unit 103.

  As described above, the display device according to the present exemplary embodiment can display on the sub display unit 103 a message that prompts the user to deal with the information device according to the status information of the display device and the status information of the information device.

  As a result, when the information device outputs video to the display device but the display device does not display the video, the information device is turned on without the user's intention. In such a case, it is possible to solve the problem of wasteful power consumption. In other words, when this embodiment is applied to a display device, if the information device is performing an operation that is not intended by the user, the user is notified that the information device has been forgotten to be turned off by notifying the user that the information device has been turned off. This can be prevented and power consumption can be reduced.

  In this embodiment, the message display determination process shown in FIG. 5 is repeatedly executed at regular time intervals, but may be executed every time the communication unit 108 receives status information from the BD recorder 101.

(Example 2)
In the present embodiment, a case where the information device connected to the display device is a portable information device will be described.

  FIG. 6 is a system configuration diagram including the TV 100 as a display device and the DV camera 200 as a portable information device. Hereinafter, only the differences from the first embodiment will be described in the second embodiment. . In this embodiment, the DV camera 200 is used as the portable information device. However, the portable information device in the present invention is not limited to the DV camera 200.

  In the same manner as the BD recorder 101 according to the first embodiment, the DV camera 200 according to the present embodiment can transmit status information of the DV camera 200 as status information of the information device to the TV 100 in addition to video and audio. it can. The DV camera 200 is configured to transmit this status information not only when the user operates the DV camera 200 but also when the remaining battery level of the DV camera 200 changes.

  Next, the status table in the present embodiment will be described. In the status table in the present embodiment, status information “waiting for a large amount of remaining battery” is associated with the reception time “yy: zz: 15” of status information. The status of the DV camera 200 is “waiting for a large amount of remaining battery” because, for example, the user turns on the power of the DV camera 200 at the time “yy: zz: 15”. It is because it became.

  Further, in the status table in the present embodiment, status information “remaining battery remaining during reproduction” is associated with the reception time “yy: zz: 25” of the status information. The state of the DV camera 200 is set to “battery remaining high” because, for example, the user starts playing the video with the DV camera 200 at the time “yy: zz: 25” at the time “yy: zz: 25”. This is because “being played”.

  Further, in the status table in the present embodiment, status information “reproducing low battery” is associated with the reception time “yy: zz: 35” of status information. The reason for this association is that at time “yy: zz: 35”, the status of the DV camera 200 is changed to “playing low battery” because the battery level of the DV camera 200 has decreased. It is because it became.

  Next, each row of the display message table shown in FIG. 7 in the present embodiment will be described in detail.

  The row R301 indicates that a message is displayed on the sub-display unit 103 when the status information of the information device is “waiting for a large amount of remaining battery” and the status information of the TV 100 is “standby state” (message display necessity information) Indicates “necessary”). The message is “Please check that the information device connected to the TV is turned on.” In such a case, the message is displayed when the information device is on standby and the power is turned on even though the TV 100 is in a standby state, and the information device performs an operation not intended by the user. This is to prompt the user to deal with the problem.

  The row R302 indicates that a message is displayed on the sub-display unit 103 when the status information of the information device is “standby for low battery level” and the status information of the TV 100 is “standby state” (message display necessity information). Indicates “necessary”). The message is "The information device connected to the TV is turned on. Also, please charge the battery because the battery is low." In such a case, the message is displayed because the information device is on standby and the power is on and the remaining battery level is low even though the TV 100 is in the standby state. This is because it is necessary to prompt the user to deal with it.

  A row R303 indicates that a message is displayed on the sub-display unit 103 when the status information of the information device is “waiting for a large amount of remaining battery” and the status information of the TV 100 is “displaying a broadcast program for a certain period of time” (message The display necessity information indicates “necessary”). The message is “You are watching a broadcast program, but please confirm that the information device is powered on.” In such a case, the message is displayed because the information device is on standby and the power is turned on even though the TV 100 is displaying the broadcast program, and the information device is intended by the user. This is to prompt the user to deal with the possibility that the user is not performing the operation.

  The row R304 indicates that a message is displayed on the sub-display unit 103 when the status information of the information device is “waiting for low battery level” and the status information of the TV 100 is “displaying a broadcast program for a certain period of time” (message The display necessity information indicates “necessary”). The message is “While watching a broadcast program, the information device is turned on. Also, charge the battery because the battery is low”. In such a case, the message is displayed because the information device is on standby and the power is turned on even though the TV 100 is displaying the broadcast program, and the remaining battery level is low. This is because it is necessary to prompt the user to deal with it.

  A line R305 indicates that a message is displayed on the sub display unit 103 when the status information of the information device is “playing a lot of remaining battery power” and the status information of the TV 100 is “displaying a broadcast program for a certain period of time” (message The display necessity information indicates “necessary”). The message is “You are watching a broadcast program, but the information device is playing, so please check.” In such a case, the message is displayed because the TV 100 displays a TV broadcast program and does not display the video even though the information device is reproducing the video. This is because it is necessary to urgently deal with it.

  A line R306 indicates that a message is displayed on the sub-display unit 103 when the status information of the information device is “playing low battery” and the status information of the TV 100 is “displaying a broadcast program for a certain period of time” (message The display necessity information indicates “necessary”). The message is “You are watching a broadcast program, but you are playing with a low battery. Please stop playing and charge.” In such a case, the message is displayed because the battery of the information device is low and the TV 100 is displaying a TV broadcast program and displaying a video reproduced by the information device. This is because it is necessary to prompt the user to deal with it.

  The row R307 indicates that no message is displayed on the sub display unit 103 when the status information of the information device is “playing a lot of remaining battery power” and the status information of the TV 100 is “displaying information device video” (message display). Necessity information indicates “No”. The reason why the message is not displayed in such a case is that the TV 100 displays the video being played back by the information device, and the battery of the information device is sufficient, so there is no need to prompt the user to deal with it. .

  Row R308 indicates that a message is displayed on the sub display unit 103 when the status information of the information device is “playing low battery” and the status information of the TV 100 is “displaying information device video” (message display). Necessity information indicates “necessary”). The message is “Battery-driven playback, but the remaining battery power is low. Check the power and charge the battery.” In such a case, the message is displayed because the battery of the information device is decreasing despite the TV 100 displaying the video being played back by the information device. This is because it is necessary to prompt the user to charge.

  A row R309 indicates that no message is displayed on the sub display unit 103 when the status information of the information device is “standby for power supply” and the status information of the TV 100 is “displaying information device video” (message display necessity information). Indicates “No”). The message is not displayed in such a case because the TV 100 is displaying the video that the information device is outputting while on standby, and it is not necessary to prompt the user to deal with it.

  The row R310 indicates that no message is displayed on the sub-display unit 103 when the status information of the information device is “power-driven playback” and the status information of the TV 100 is “displaying information device video” (message display necessity information). Indicates “No”). In such a case, the message is not displayed because the TV 100 is displaying the video being played back by the information device, and the information device is driven by the power source. Because there is no.

  The message display determination process in the display determination unit 111 according to the present embodiment is the same as the message display determination process according to the first embodiment. However, the information device is not the BD recorder 101 but the DV camera 200.

  Hereinafter, in the present embodiment, a case will be described in which the display determination unit 111 executes message display determination processing after the time “yy: zz: 35”. First, in step S <b> 101, the display determination unit 111 acquires status information “during battery low playback” of the DV camera 200 as an information device from the status table.

  Next, in step S <b> 102, the display determination unit 111 acquires the status information of the TV 100 from the control unit 112. It is assumed that the status information of the TV 100 acquired by the display determination unit 111 is “information device image being displayed”.

  In step S103, the display determination unit 111 displays message display necessity information associated with the status information of the information device “playing low battery power” and the status information of the TV 100 “displaying information device video”. Get from table. Since the acquired message display necessity information is “necessary”, the display determination unit 111 determines that the user needs to be addressed, and proceeds to step S104.

  In step S104, the display determination unit 111 obtains, from the display message table, a display message associated with the status information of the information device “playing low battery power” and the status information of the TV 100 “displaying information device video”. To do. Further, the display determination unit 111 causes the sub display unit 103 to display the acquired display message. In this case, the message displayed on the sub-display unit 103 is “Battery-driven playback, but the remaining battery power is low. Check the power and charge the battery”.

  As described above, the display device according to the present exemplary embodiment can display on the sub display unit 103 a message that prompts the user to deal with the information device in accordance with the status information of the display device and the status information of the information device.

  As a result, even if the display device displays the video output from the information device, if the user does not notice a decrease in the remaining battery level of the information device, the battery of the information device runs out. It becomes possible to solve the problem that the viewing of is interrupted. In other words, when this embodiment is applied to a display device, when the display device displays a video output from the information device, the information device is notified by notifying the user of a decrease in the remaining battery level of the information device. Therefore, the user can watch the video without interruption.

(Example 3)
In the first embodiment, every time the user operates the BD recorder 101, the BD recorder 101 transmits status information to the TV 100. In this embodiment, the TV 100 requests the BD recorder 101 to transmit status information. To do. Only differences from the first embodiment will be described below.

  Unlike the first embodiment, the BD recorder 101 in the present embodiment transmits the status information of the BD recorder 101 as the status information of the information device to the TV 100 when receiving a control signal requesting transmission of status information from the TV 100. Is configured to do.

  On the other hand, the TV 100 according to the present embodiment is different in the communication unit 108 and the display determination unit 111 according to the first embodiment. Therefore, the communication unit 108 and the display determination unit 111 will be described below.

  When instructed by a display determination unit 111 (to be described later), the communication unit 108 transmits a control signal requesting transmission of status information to the BD recorder 101. When receiving the status information from the BD recorder 101, the communication unit 108 outputs the status information and the reception time of the status information to the holding unit 110, and also displays the received status information in the display determination unit 111. Output.

  The display determination unit 111 acquires the status information of the TV 100 from the control unit 112 and determines whether the status information of the TV 100 has changed. In particular, when the display determination unit 111 determines that the status of the TV 100 has changed, the display determination unit 111 controls the communication unit 108 to transmit a control signal requesting transmission of status information to the BD recorder 101. When the status information of the information device is input from the communication unit 108, the display determination unit 111 appropriately displays a message on the sub display unit 103 according to the status information and the status information of the TV 100. Such message display determination processing according to the present embodiment will be described with reference to FIG.

  Subsequently, a message display determination process for requesting transmission of status information to the information device connected to the TV 100 and appropriately displaying a message according to the acquired status information and the status information of the TV 100 will be described. To do. The display determination unit 111 executes this process. FIG. 8 is a flowchart showing the message display determination process. Similar to the first embodiment, the display determination unit 111 performs this processing while the status information of the information device exists in the status table held by the holding unit 110, that is, while the information device is connected to the TV 100. Run repeatedly at time intervals.

  In step S201, the display determination unit 111 newly acquires the status information of the TV 100 from the control unit 112 and compares the status information with the previously acquired status information of the TV 100, thereby determining whether the status of the TV 100 has changed. To do. If the display determination unit 111 determines that the status information of the TV 100 has changed, the process proceeds to step S202. If the display determination unit 111 determines that the status information has not changed, the display determination unit 111 waits for a predetermined time and then returns to step S201.

  In step S202, the display determination unit 111 controls the communication unit 108 to transmit a control signal that requests transmission of status information. The control signal is transmitted to the information device connected to the TV 100.

  In step S <b> 203, the display determination unit 111 determines whether the status information of the BD recorder 101 is input from the communication unit 108. If the display determination unit 111 determines that the status information of the information device has been input from the communication unit 108, the process proceeds to step S205. If the display determination unit 111 determines that it has not been input, the process proceeds to step S204.

  Step S204 is the same as step S101 shown in FIG.

  Steps S205 to S207 are the same as steps S103 to S105 shown in FIG.

  As described above, the display device according to the present embodiment can request the information device to transmit status information when the state of the display device changes. The display device according to the present exemplary embodiment can display a message for prompting the information device on the sub display unit 103 according to the received status information of the information device and the status information of the display device.

  As a result, when the information device performs an operation not intended by the user, the user can be notified of forgetting to turn off the information device at a suitable timing when the user performs some operation on the TV 100. Thus, power consumption can be reduced.

  In addition, the display device according to the present embodiment can also be applied when the information device connected to the display device is a portable information device. Note that a DV camera 200 is assumed as the information device.

  In this case, the DV camera 200 transmits the status information of the DV camera 200 to the TV 100 when receiving a control signal for requesting transmission of the status information from the TV 100, like the BD recorder 101 according to the present embodiment. Configured as follows.

  Further, the message display determination process in the display determination unit 111 when the DV camera 200 is connected to the TV 100 is the same as the flowchart shown in FIG. However, the display message table shown in FIG. 7 is used as the display message table.

  Therefore, according to the display device in the present embodiment, when the display device displays the video output from the information device, the user is informed at a suitable timing when the user performs some operation on the TV 100. It is possible to notify a decrease in the battery level of the device. As a result, the battery of the information device can be prevented from running out, and the user can view the video without interruption.

Example 4
In the first embodiment, the case where one information device is connected to the display device has been described. In this embodiment, a case where a plurality of information devices are connected to the display device will be described. Hereinafter, the description according to the fourth embodiment will be described only with respect to differences from the first embodiment.

  The system in this embodiment includes a TV 100 as a display device, a first BD recorder 301 as a first information device, and a second BD recorder 302 as a second information device. The first BD recorder 301 and the second BD recorder 302 are communicably connected to the TV 100 via an HDMI cable.

  Similar to the BD recorder 101 according to the first embodiment, the first BD recorder 301 is configured to transmit status information of the first BD recorder 301 to the TV 100 in addition to video and audio. . The second BD recorder 302 is also configured to transmit status information of the second BD recorder 302 to the TV 100 in addition to video and audio. Note that the first BD recorder 301 and the second BD recorder 302 in the present embodiment are configured to transmit status information to the TV 100 every time it is operated by the user.

  FIG. 9 is a block diagram illustrating a schematic configuration of the TV 100 according to the fourth embodiment of the present invention.

  The first communication unit 303 receives not only video data and audio data but also status information from the first BD recorder 301 connected to the TV 100. Then, the first communication unit 303 outputs video data and audio data to the control unit 112.

  Further, the first communication unit 303 outputs the received status information, the reception time of the status information, and the input identification information to the holding unit 110. Here, the input identification information is information that identifies which of the first communication unit 303 or the second communication unit 304 is the status information input to. In this embodiment, when the value of the input identification information is “input 1”, it indicates that the status information is input to the first communication unit 303, and when the value of the input identification information is “input 2”. Indicates status information input to the second communication unit 303. The first communication unit 303 calculates the reception time of the status information based on the current time acquired from the time management unit 109.

  Similarly to the first communication unit 303, the second communication unit 304 receives not only video data and audio data but also status information from the second BD recorder 302 connected to the TV 100. Then, the second communication unit 304 outputs the video data and audio data to the control unit 112. Further, the second communication unit 304 outputs the received status information, the reception time of the status information, and the input identification information to the holding unit 110. The second communication unit 304 calculates the reception time of the status information based on the current time acquired from the time management unit 109.

  Next, the holding unit 110 will be described. In this embodiment, the status table held by the holding unit 110 is a table as shown in FIG. 10 in which input identification information is associated with reception time and status information corresponding to the input identification information. The holding unit 110 receives information on the status table from the first communication unit 303 and the second communication unit 304. In the status table shown in FIG. 10, the row R701 indicates that the status of the first BD recorder 301 is on standby at the time “xx: yy: 15”, for example, when the user turns on the power of the first BD recorder 301. Indicates that it has become inside.

  Further, the row R702 indicates that the status of the first BD recorder 301 is being reproduced at the time “xx: yy: 25”, for example, because the user is causing the first BD recorder 301 to reproduce the video. It is shown that. Further, the row R703 indicates that the status of the second BD recorder 302 is on standby at the time “xx: yy: 35”, for example, when the user turns on the power of the second BD recorder 302. Show.

  The display determination unit 111 acquires the latest status information of the first BD recorder 301 and the latest status information of the second BD recorder 302 from the status table held by the holding unit 110. Further, the display determination unit 111 acquires the status information of the TV 100 from the control unit 112. Furthermore, the display determination unit 111 acquires a display message from the display message table according to the status information of the first BD recorder 301, the status information of the second BD recorder, and the status information of the TV 100, and It is displayed on the display unit 103. Such message display determination processing will be described later with reference to FIG.

  The control unit 112 receives video data and audio data from the decoding unit 107, the first communication unit 303, and the second communication unit 304. The control unit 112 also inputs the input source of the video data output to the main display unit 102 and the audio data output to the speaker 113 in accordance with a user input switching operation, and the decoding unit 107 and the first communication unit 303. And the second communication unit 304.

  Next, message display determination processing for appropriately displaying a message according to the status information of the TV 100, the status information of the first information device, and the status information of the second information device will be described. The display determination unit 111 executes this process. FIG. 11 is a flowchart showing a process flow of the message display determination process.

  Note that the display determination unit 111 determines whether the first information device or the second information device is in the TV 100 while the status information of the first information device or the second information device exists in the status table. While connected, this process is repeatedly executed at regular time intervals.

  In step S301, the display determination unit 111 reads the latest status information of each of the first information device and the second information device from the status table held by the holding unit 110. When the status information cannot be acquired from the first information device (or the second information device), it is determined that the status information of the information device is “power-off state”.

  In step S <b> 302, the display determination unit 111 acquires status information of the TV 100 from the control unit 112. Note that if the status information of the TV 100 cannot be acquired from the control unit 112, the display determination unit 111 assumes that the status information of the TV 100 is “standby state”.

  In step S303, the display determination unit 111 determines whether it is necessary to prompt the user to deal with any one of the first information device and the second information device. Specifically, first, the display determination unit 111 associates the status information of the first information device acquired in step S301 and the status information of the TV 100 acquired in step S302 from the message table held by the holding unit 110. The displayed display necessity information is acquired.

  Furthermore, the display determination unit 111 displays the display information associated with the status information of the second information device acquired in step S301 and the status information of the TV 100 acquired in step S302 from the message table held by the holding unit 110. Get denial information. Then, the display determination unit 111 needs to prompt the user to deal with any of the information devices when the value of the display necessity information is “necessary” among the two pieces of display necessity information acquired. It is determined that there is.

  On the other hand, the display determination unit 111 determines that there is no need to prompt the user to deal with when the value of any of the two pieces of display necessity information acquired is “No”. If the display determination unit 111 determines that it is necessary to prompt the user to deal with any information device, the display determination unit 111 proceeds to step S304. If the display determination unit 111 determines that it is not necessary to prompt the user to handle, the process proceeds to step S305.

  In step S304, the display determination unit 111 causes the sub display unit 103 to display an appropriate message for each of the first information device and the second information device. Specific processing of the display determination unit in step S304 will be described separately for the following cases (1) and (2).

  (1) The value of display necessity information of one of the display necessity information acquired for the first information device and the display necessity information acquired for the second information device is “necessary”.

  In the case of (1), the display determination unit 111 is associated with the status information of the information device whose display necessity information acquired in step S301 is “necessary” and the status information of the TV 100 acquired in step S302. Get the displayed message from the display message table. Then, the display determination unit 111 causes the sub display unit 103 to display an icon corresponding to the input identification information associated with the status information of the information device in the status table and a display message acquired regarding the information device. (FIG. 12A).

  (2) A case where both the value of display necessity information acquired regarding the first information device and the value of display necessity information acquired regarding the second information device are “necessary” in step S303.

  In the case of (2), first, the display determination unit 111 displays a display message associated with the status information of the first information device acquired in step S301 and the status information of the TV 100 acquired in step S302. Get from message table. Further, the display determination unit 111 acquires a display message associated with the status information of the second information device acquired in step S301 and the status information of the TV 100 acquired in step S302 from the display message table.

  Next, the display determination unit 111 causes the sub display unit 103 to display an icon corresponding to the input identification information “input 1” and a display message acquired regarding the first information device (FIG. 12A). When a predetermined time has elapsed since the display, the display determination unit 111 displays an icon corresponding to the input identification information “input 2” and a display message acquired regarding the second information device on the sub display unit 103. It is displayed (FIG. 12B). When a predetermined time has elapsed since the display again, the display determination unit 111 displays an icon corresponding to the input identification information “input 1” and a display message acquired regarding the first information device on the sub display unit 103. It is displayed (FIG. 12 (a)). By repeating such processing, the display determination unit 111 switches the display message related to the first information device and the display message related to the second information device every predetermined time and causes the sub display unit 103 to display them.

  In step S <b> 305, the display determination unit 111 deletes the display on the sub display unit 103.

  As described above, even when a plurality of information devices are connected, the display device according to the present embodiment displays a message for prompting the information device to deal with the sub display unit according to the status information of the display device and the status information of each information device. 103 can be displayed.

  As a result, in the information device connected to the display device, when the user does not notice the presence of the information device that is turned on while performing an operation not intended by the user, the problem is that power is wasted. Can be eliminated. In other words, when this embodiment is applied to a display device, if there is an information device performing an operation not intended by the user among a plurality of information devices connected to the display device, the information device Can be notified of forgetting to turn off the power. As a result, forgetting to turn off the power of the information device can be prevented, and the power consumption can be reduced.

  In the display device according to the present embodiment, the message relating to the first information device and the message relating to the second information device are switched at a predetermined time interval and displayed on the sub display unit 103. This is not a limitation. For example, as shown in FIG. 13, first, an icon corresponding to the input identification information “input 1” and an icon corresponding to the input identification information “input 2” are displayed side by side on the sub display unit 103 (FIG. 13A). )). Then, the information displayed on the sub display unit 103 may be switched by operating a remote controller that allows the user to operate the display device (FIGS. 13B and 13C).

  In this embodiment, the input identification information is used to distinguish whether it is the status information of the first information device or the status information of the second information device, but the information that can be used is this. It is not limited to. For example, other information may be used as long as the information can identify the first information device and the second information device, such as a physical address of the information device.

1 is a system configuration diagram including a TV 100 as a display device and a BD recorder 101 as an information device in Embodiment 1 of the present invention. FIG. It is a block diagram which shows schematic structure of TV100 as a display apparatus in Example 1 of this invention. It is a figure which shows the example of the status table in Example 1 of this invention. It is a figure which shows the example of the display message table in Example 1 of this invention. It is a flowchart which shows the display message determination process in Example 1 of this invention. It is a system block diagram which consists of TV100 as a display apparatus and DV camera 200 as portable information equipment in Example 2 of this invention. It is a figure which shows the example of the display message table in Example 2 of this invention. It is a flowchart which shows the display message determination process in Example 3 of this invention. It is a block diagram which shows schematic structure of TV100 as a display apparatus in Example 4 of this invention. It is a figure which shows the example of the status table in Example 4 of this invention. It is a flowchart which shows the display message determination process in Example 4 of this invention. It is a figure which shows the example of a display of the sub display part 103 in the case of switching a display message in the fixed time interval in Example 4 of this invention. It is a figure which shows the example of a display of the sub display part 103 in the case of switching a display message by the user's remote control operation in Example 4 of this invention.

Claims (10)

A display device including a main display and a sub display that are connected to an information device so as to be communicable and can independently control display on / off,
Management means for managing status information of the main display;
Receiving means for receiving status information of the information device from the information device;
Holding means for holding in advance a table in which a message displayed on the secondary display is associated with a set of statuses that the information device can take and statuses that the main display can take;
In accordance with a combination of the status information of the main display managed by the management means and the status information of the information device received by the receiving means, a message held in the holding means is selected, and the selected message is selected in the secondary display. And a display control means for displaying on the display.   The display control means has the status information of the main display managed by the management means in spite of the fact that the status information of the information device received by the receiving means indicates that the video is being reproduced. A message indicating that the information device is playing a video is displayed on the sub-display when the information device does not indicate that the video being played is being displayed. The display device according to 1.   If the status information of the main display managed by the management means does not indicate that the information device is displaying a video being played, if the display of the main display is in a standby state off, The display device according to claim 2, further comprising a case in which a video different from the video being reproduced by the information device is displayed on the main display.   The display control means is received by the receiving means even though the status information of the main display managed by the managing means indicates that the video being reproduced by the information device is being displayed. 3. When the status information of the information device indicates a decrease in the remaining battery level, a message indicating that the remaining battery level of the information device is decreasing is displayed on the sub display. Or the display apparatus of Claim 3. Determination means for determining whether status information of the main display managed by the management means has changed;
And a transmission means for transmitting a control signal for requesting transmission of the status information of the information device to the information device when the determination means determines that the status information of the main display has changed. The display device according to claim 1, wherein: A control method of a display device including a main display and a sub-display that are connected to an information device so as to be communicable and capable of independently controlling on / off of display,
A management process for managing status information of the main display;
A receiving step of receiving status information of the information device from the information device;
A holding step of holding in advance a table in which a message to be displayed on the secondary display is associated with a set of statuses that the information device can take and statuses that the main display can take;
According to the combination of the status information of the main display managed by the management process and the status information of the information device received by the receiving process, the message held by the holding process is selected, and the selected message is sent to the secondary display. And a display control step for displaying the display device.   In the display control step, the status information of the main display managed by the management step is displayed even though the status information of the information device received by the reception step indicates that the video is being reproduced. A message indicating that the information device is playing a video is displayed on the sub-display when the information device does not indicate that the video being played is being displayed. 7. A method for controlling the display device according to 6. If the status information of the main display managed by the management process does not indicate that the information device is displaying a video being played, if the display of the main display is in a standby state of off, The display device control method according to claim 7, further comprising a case where an image different from the image being reproduced by the information device is displayed on the main display.   The display control step is received by the reception step even though the status information of the main display managed by the management step indicates that the information device is displaying a video being reproduced. When the status information of the information device indicates a decrease in the remaining battery level, a message indicating that the remaining battery level of the information device is decreasing is displayed on the sub-display. The control method of the display apparatus of Claim 7 or Claim 8. A determination step of determining whether status information of the main display managed by the management step has changed;
A transmission step of transmitting a control signal for requesting transmission of the status information of the information device to the information device when it is determined that the status information of the main display has changed by the determination step. 10. A method for controlling a display device according to claim 6, wherein:

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