JP2008300918A - Display, display control method, and display control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform power saving control depending on the use conditions. <P>SOLUTION: When an A/V output control section 15 is displaying a video signal supplied from an A/V decoder 14 on a display 17, power saving control is performed if operation is not performed for a fixed time, or a video signal is not supplied for a fixed time. When the A/V output control section 15 is outputting a video signal inputted from an external connection apparatus 100 through a video terminal 24 to the display 17, power saving control is performed if the video signal does not change for a fixed time, or the video signal is not supplied for a fixed time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device, a display control method, and a display control program, and in particular, a display device, a display control method, and display control that automatically stop power supply when a predetermined condition is satisfied to save power consumption. It is about the program.

Conventionally, for example, there is one that controls supply / stop of power according to whether or not a non-operation state is continued for a certain period of time while the power is on (see, for example, Patent Document 1).
In addition, there is one that controls supply / stop of power based on a reception state (see, for example, Patent Document 2).
In addition, there is a type in which the supply / stop of the power supply is controlled according to whether or not the video unchanged state is continued for a certain period of time (see, for example, Patent Document 3).
JP 2000-36143 A JP-A-5-91487 Japanese Patent Laid-Open No. 3-121528

However, when the operation state is detected and the supply / stop of the power supply is controlled, the power saving mode may be entered if no operation continues even if the user views the video for a long time. Even when there is no operation, the user may watch the video for a long time, and in this case, the user enters the power saving mode even though he does not want to turn off the power automatically. There was a problem that.
Further, when controlling the supply / stop of the power using the reception state, there is a problem that even if the broadcast is finished, the power saving mode is not entered if the reception state continues. In addition, there is a problem that it is not possible to deal with when the video is received but some problem occurs in the video itself.
Further, when controlling the supply / stop of the power using the video state, if a broadcast in which a still image is always transmitted is viewed for a long time, the power saving mode is set. In this case, there is a problem that the user enters the power saving mode although he / she does not want to automatically turn off the power.
The present invention has been made in view of such a situation, and an object thereof is to provide a display device capable of solving the above-described problems.

The display device according to claim 1 is a display device that displays a video, a display unit that displays the video on a predetermined display unit, an operation unit that outputs an operation signal according to a predetermined operation, Video type determining means for determining the type of the video displayed on the display unit, operation presence / absence determining means for determining presence / absence of operation by the operating means, and video change for detecting whether the video is changing Presence / absence detection means; video signal presence / absence detection means for detecting whether or not a video signal corresponding to the video is supplied to the display; and if the video is a first type of video, the video change presence / absence When the detection means determines that the video is unchanged, and when the video signal presence / absence detection means determines that the video signal is not supplied to the display, the display portion of the video And when the video is a second type of video, when the video change presence / absence detection means determines that the video is unchanged, and when the video signal presence / absence detection means detects the video signal Control means for controlling to stop displaying the video by the display unit when it is determined that the video is not supplied to the display unit.
Further, when the display unit is displaying a plurality of videos at the same time, the control means can control to stop the display for each video.
The display control method according to claim 3 is a display control method for controlling a display device that displays an image, wherein the display step displays the image on a display unit, and an operation signal corresponding to a predetermined operation is output. An operation step, a video type determination step for determining the type of the video displayed on the display unit, an operation presence / absence determination step for determining presence / absence of an operation in the operation step, and whether or not the video has changed A video change presence / absence detecting step for detecting video, a video signal presence / absence detecting step for detecting whether or not a video signal corresponding to the video is supplied to the display unit, and the video is a first type video When the video change presence / absence detection step determines that the video is unchanged, and in the video signal presence / absence detection step, the video signal is displayed. When it is determined that the video is not supplied to the video, display of the video is stopped by the display unit, and when the video is a second type of video, the video is unchanged in the video change presence / absence detection step. A control step for controlling to stop displaying the video by the display unit when it is determined that the video signal is not supplied to the display unit in the video signal presence / absence detection step; It is characterized by providing.
Further, when the display unit is displaying a plurality of videos at the same time, the control step can be controlled to stop the display for each video.
The display control program according to claim 5 is a display control program for controlling a display device that displays an image, wherein a display step for displaying the image on a display unit and an operation signal corresponding to a predetermined operation are output. An operation step, a video type determination step for determining the type of the video displayed on the display unit, an operation presence / absence determination step for determining presence / absence of an operation in the operation step, and whether or not the video has changed A video change presence / absence detecting step for detecting video, a video signal presence / absence detecting step for detecting whether a video signal corresponding to the video is supplied to the display unit, and the video is a first type video When the video change presence / absence detection step determines that the video is unchanged, and in the video signal presence / absence detection step, Is not supplied to the display unit, the display of the video is stopped by the display unit, and when the video is a second type of video, the video is detected in the video change presence / absence detection step. Control is performed to stop display of the video by the display unit when it is determined that there is no change and when it is determined in the video signal presence / absence detection step that the video signal is not supplied to the display unit And a control step of causing the display device to execute.
Further, when the display unit is displaying a plurality of videos at the same time, the control step can be controlled to stop the display for each video.

  According to the display device of the present invention, it is possible to perform predetermined power saving control at a flexible and accurate timing according to the type of video currently displayed.

  FIG. 1 is a block diagram showing a configuration example of an embodiment of a television receiver to which the present invention is applied. As shown in the figure, a television receiver 1 according to an embodiment of the present invention includes an antenna 11 and a tuner that selects a predetermined channel from a received signal supplied from the antenna 11 and performs a demodulation process ( Tuner) and demodulator 12, and video / audio data that is selected by the tuner and demodulator 12 and constitutes demodulated digital reception data is supplied to an A / V decoder 14 to be described later, and an EPG (Electronic Program Guide) A demultiplexer (TS-Demux) 13 for supplying (electronic program guide) to the system controller 18 and the video / audio data supplied from the demultiplexer 13 are decoded, and an A / V (Audio / Visual) output control unit 15 to be described later. A / V decoder 14 supplied to the A / V decoder, and the sound corresponding to the audio data among the audio / video data supplied from the A / V decoder 14 An A / V output control unit 15 that outputs a voice signal to a speaker 16 described later and supplies a video display signal corresponding to the video data to a display 17 described later, and an audio signal supplied from the A / V output control unit 15 A speaker 16 that outputs audio corresponding to the A / V output, a display 17 that displays a video corresponding to a video display signal supplied from the A / V output control unit 15, a system controller 18 that controls each unit, and a control of the system controller 18 The power saving control selection unit 19 for selecting a power saving control method, a button on a remote controller (remote controller) (not shown) or a button (not shown) included in the television receiver 1 is detected, and a detection signal is sent to the system. The operation detection unit 20 supplied to the controller 18 is reset at a predetermined timing, When the video / audio signal output from the counter 21 holding the count value counted up and supplied to the system controller 18 and the A / V output control unit 15 is detected and the video / audio signal is detected, AV signal detection unit 22 supplied to detection unit 23, still image detection unit 23 for detecting whether or not the video corresponding to the video signal is a still image based on the AV signal supplied from AV signal detection unit 22, and The video terminal 24 and the audio terminal 25 for connecting the external connection device 100 and the video signal supplied from the external connection device 100 through the video terminal 24 are input, and the external connection device 100 is connected through the audio terminal 25. Input to the A / V output control unit 15 and the video / audio external input unit 26 to be supplied to the A / V output control unit 15. A power supply unit 27 for supplying power, and a LED (Light Emitting Diode) 28 or the like that turns on or blinks the power-off manner in accordance with the cause when the power is turned off.

  FIG. 2 is a flowchart showing a procedure by which the system controller 18 selects a power saving control method. First, in step S1, the current output is determined. That is, based on the output video type data supplied from the A / V output control unit 15 to the system controller 18, the system controller 18 determines that the video signal that the A / V output control unit 15 is currently outputting to the display 17 is It is determined whether the signal is received by the antenna 11 or supplied from the external device 100 via the video terminal 24. That is, the A / V output control unit 15 outputs a video signal corresponding to the video data supplied from the A / V decoder 14 to the display 17 or an external signal supplied from the video / audio external input unit 26. Output video type data indicating whether the video signal from the connected device 100 is being output to the display 17 is supplied to the system controller 18.

  Next, in step S2, the system controller 18 determines whether the video corresponding to the video signal output from the A / V output control unit 15 is different from the video corresponding to the previously output video signal. The As a result, when it is determined that the video corresponding to the video signal output from the A / V output control unit 15 matches the video corresponding to the previously output video signal, this processing ends. On the other hand, if it is determined that the video corresponding to the video signal output from the A / V output control unit 15 is different from the video corresponding to the previously output video signal, the process proceeds to step S3.

  In step S3, the count value of the counter 21 is reset (value 0 is set) by the control of the system controller 18, and the power saving control is stopped.

  Next, in step S4, whether or not the A / V output control unit 15 outputs a video signal input from the external connection device 100 such as a PC (personal computer) via the video terminal 24 to the display 17 or not. Determined.

  As a result, when it is determined that the A / V output control unit 15 is outputting the video signal input from the external connection device 100 such as a PC (personal computer) via the video terminal 24 to the display 17, the step is performed. Proceed to S5. On the other hand, when the A / V output control unit 15 determines that the video signal input from the external connection device 100 such as a PC (personal computer) via the video terminal 24 is not output to the display 17, the step S6. Proceed to

  In step S5, the system controller 18 performs non-change-off control described later with reference to FIG. On the other hand, in step S6, no-operation off control described later with reference to FIG. 4 is executed. After the process of step S5 or step S6 is executed, the process proceeds to step S7. In step S7, the system controller 18 performs no signal off control which will be described later with reference to FIG.

  Next, in step S8, the still image detection unit 23 stores the current output as the previous output. That is, the video data corresponding to the same video signal as that currently supplied to the display 17 by the A / V output control unit 15 supplied via the AV signal detection unit 22 is stored in a memory (not shown). . Then, it returns to step S2 and the process after step S2 is repeatedly performed. In step S2, the video data stored in the memory in step S8 is used as the previous output and compared with the current output.

  FIG. 3 is a flowchart showing the procedure of the non-change-off control in step S5 of FIG. First, in step 11, the system controller 18 resets the count value of the counter 21 (sets the count value to 0). Next, in step S12, the still image detection unit 23 determines whether the video displayed on the display 17 is a still image.

  As a result, when it is determined that the video displayed on the display 17 is not a still image, the process returns to step S11, and the processes after step S11 are repeatedly executed. On the other hand, when it is determined that the video displayed on the display 17 is a still image, the process proceeds to step S13.

  In step S13, under the control of the system controller 18, the count value of the counter 21 is counted up (increased by 1). Next, in step S14, the system controller 18 determines whether or not the count value of the counter 21 is equal to or greater than a predetermined threshold value set in advance.

  As a result of the determination, when it is determined that the count value of the counter 21 is not equal to or greater than the predetermined threshold (less than the predetermined threshold), the process returns to step S12, and the processes after step S12 are repeatedly executed. On the other hand, when it is determined that the count value of the counter 21 is equal to or greater than the predetermined threshold (when it is determined that a still image is continuously displayed for a certain period of time), the process proceeds to step S15.

  In step S15, it is determined whether or not a multi-screen is displayed on the display 17. That is, the screen of the display 17 is virtually divided into a plurality of small screens, and it is determined whether different videos are displayed on each small screen. As a result, when it is determined that multiple screens are not displayed on the display 17 (one screen is displayed), the process proceeds to step S16, where the power supply unit 27 is controlled by the system controller 18 and the power supply unit 27 supplies power to each unit. Supply is stopped.

  On the other hand, if it is determined that a multi-screen is displayed on the display 17, the process proceeds to step S 17, where the system controller 18 turns off the video display of the screen that is determined by the still image detection unit 23 to display a still image. Let That is, control is performed so that no video is displayed on the screen. When the process of step S16 or step S17 ends, this process ends.

  FIG. 4 is a flowchart showing a procedure of no-operation off control in step S6 of FIG. First, in step 21, the system controller 18 resets the count value of the counter 21 (sets the count value to 0). Next, in step S22, the system controller 18 determines whether or not there is no operation. In other words, it is determined whether or not the operation detection unit 20 detects that an operation unit (not shown) provided on the main body of the television receiver 1 is operated.

  As a result, when it is determined that the operation unit provided in the remote controller or the television receiver 1 main body (not shown) is operated (not operated), the process returns to step S21, and after step S21. The process is executed repeatedly. On the other hand, if it is determined that it has not been detected that the operation unit provided on the remote controller or the main body of the television receiver 1 (not shown) has been operated (no operation), the process proceeds to step S23.

  In step S23, the count value of the counter 21 is counted up (increased by 1) under the control of the system controller 18. Next, in step S24, the system controller 18 determines whether or not the count value of the counter 21 is equal to or greater than a predetermined threshold value set in advance.

  As a result of the determination, when it is determined that the count value of the counter 21 is not equal to or greater than the predetermined threshold (less than the predetermined threshold), the process returns to step S22, and the processes after step S22 are repeatedly executed. On the other hand, when it is determined that the count value of the counter 21 is equal to or greater than the predetermined threshold (when it is determined that the no-operation state has continued for a certain period of time), the process proceeds to step S25.

  In step S25, it is determined whether or not a multi-screen is displayed on the display 17. That is, the screen of the display 17 is virtually divided into a plurality of small screens, and it is determined whether different videos are displayed on each small screen. As a result, when it is determined that multiple screens are not displayed on the display 17 (one screen is displayed), the process proceeds to step S26 where the power supply unit 27 is controlled by the system controller 18 and the power supply unit 27 supplies power to each unit. Supply is stopped.

  On the other hand, when it is determined that the multi-screen display is displayed on the display 17, the process proceeds to step S <b> 27, and the system controller 18 turns off the display of the video displayed on the operation target screen by the operation detection unit 20. To do. That is, control is performed so that no video is displayed on the screen that is the operation target. When the process of step S26 or step S27 ends, this process ends.

  FIG. 5 is a flowchart showing the procedure of the no-signal off control in step S7 of FIG. First, in step 31, the system controller 18 resets the count value of the counter 21 (sets the count value to 0). Next, in step S32, the system controller 18 determines whether or not there is no signal. That is, it is determined by the AV signal detection unit 22 whether or not the video / audio signal has been supplied from the A / V output control unit 15.

  As a result, when it is determined by the AV signal detection unit 22 that the video / audio signal has been supplied from the A / V output control unit 15 (not a no-signal), the process returns to step S31 and step S31. The subsequent processing is repeatedly executed. On the other hand, if the AV signal detection unit 22 determines that the video / audio signal is not supplied from the A / V output control unit 15 (no signal), the process proceeds to step S33.

  In step S33, the count value of the counter 21 is counted up (incremented by 1) under the control of the system controller 18. Next, in step S34, the system controller 18 determines whether or not the count value of the counter 21 is equal to or greater than a predetermined threshold value set in advance.

  As a result of the determination, when it is determined that the count value of the counter 21 is not equal to or greater than the predetermined threshold (less than the predetermined threshold), the process returns to step S32, and the processes after step S32 are repeatedly executed. On the other hand, when it is determined that the count value of the counter 21 is equal to or greater than the predetermined threshold (when it is determined that the no-signal state has continued for a certain period of time), the process proceeds to step S35.

  In step S35, it is determined whether or not a multi-screen is displayed on the display 17. That is, the screen of the display 17 is virtually divided into a plurality of small screens, and it is determined whether different videos are displayed on each small screen. As a result, when it is determined that multiple screens are not displayed on the display 17 (one screen is displayed), the process proceeds to step S36 where the power supply unit 27 is controlled by the system controller 18 and the power supply unit 27 supplies power to each unit. Supply is stopped.

  On the other hand, when it is determined that the multi-screen display is displayed on the display 17, the process proceeds to step S <b> 37, and the system controller 18 has been supplied with the audio / video signal from the A / V output control unit 15 by the AV signal detection unit 22. The display of the image on the screen in the no-signal state where no detection is detected is turned off. That is, control is performed so that no video is displayed on the screen having no video signal. When the process of step S36 or step S37 ends, this process ends.

  FIG. 6 shows an example of a warning message displayed before the power is turned off when one screen is displayed on the display 17. FIG. 6A shows an example of a warning message displayed on the display 17 when no signal is off. That is, in step S36 in FIG. 5, a warning message “There is no signal. The power will be turned off in XX seconds” is displayed on the screen of the display 17. Thereafter, the power is turned off.

  FIG. 6B shows an example of a warning message displayed on the display 17 when no operation is turned off. That is, in step S26 of FIG. 4, a warning message “TV is not being operated and the power will be turned off in XX seconds” is displayed on the screen of the display 17. Thereafter, the power is turned off.

  FIG. 6C shows an example of a warning message displayed on the display 17 when no change is made. That is, in step S16 of FIG. 3, a warning message “Monitor image is stationary. Power will be turned off in XX seconds” is displayed on the screen of the display 17. Thereafter, the power is turned off.

  FIG. 7 shows an example of a warning message displayed on the screen to be operated before the power is turned off when the display 17 is displayed on a multi-screen. In FIG. 7, the screen on which the mark “♪” is displayed above indicates the screen that is currently the operation target. FIG. 7A shows an example of a warning message displayed on the display 17 when no signal is off. That is, in step S37 of FIG. 5, a warning message “There is no signal. The power will be turned off in XX seconds” is displayed on the small screen on the right side of the display 17. Thereafter, the video display on the screen on which the warning message is displayed is stopped.

  FIG. 7B shows an example of a warning message displayed on the display 17 when no operation is turned off. That is, in step S27 in FIG. 4, the warning message “TV is not operated on the screen on the left side of the display 17 (the screen currently being operated (the mark“ ♪ ”is displayed above the screen)). “The power will turn off in ○○ seconds” is displayed. Thereafter, the video display on the screen on which the warning message is displayed is stopped. In this case, the small screen that is the operation target matches the small screen on which the warning message is displayed.

  FIG. 7C shows an example of a warning message displayed on the display 17 when no change is made. That is, in step S17 of FIG. 3, a warning message “Monitor image is stationary. Power will be turned off in XX seconds” is displayed on the screen on the right side of the display 17. Thereafter, the video display on the screen on which the warning message is displayed is stopped.

  FIG. 8 shows a method of notifying the user of the cause of the power-off by turning on or blinking the LED 28 provided on the front surface of the television receiver 1 in a predetermined color according to the cause of the power-off after the power is turned off. FIG.

  FIG. 8A shows a state in which the LED 28 is lit in red after no signal is turned off. FIG. 8B shows a state in which the LED 28 is lit in green after no operation is turned off. FIG. 8C shows a state in which the LED 28 is lit in blue after no change is made. Thus, by changing the lighting color of the LED 28 according to the cause of the power being turned off, it is possible to easily know the cause of the power being turned off. Further, the manner in which the LED 28 blinks can be changed according to the cause of the power being turned off.

  As described above, in the present embodiment, when the received television broadcast is displayed on the display 17, no-operation off control and no-signal off control are performed, and the display 17 is used as a monitor of a personal computer or the like. When is used, no change off control and no signal off control are performed. Therefore, when watching a broadcast program, the power is not automatically turned off even when the video does not change. When the personal computer is used as a monitor, the user operates the personal computer for a long time, but the power is automatically turned off even when the television receiver 1 is not operated. There is no. In this way, power consumption can be suppressed at a more flexible and accurate timing according to the usage situation, and power saving can be supported.

  It should be noted that the configuration and operation of the above-described embodiment are examples, and it goes without saying that they can be changed as appropriate without departing from the spirit of the present invention.

  The present invention can be applied not only to a television receiver, but also to various display devices.

It is a block diagram which shows the structural example of the television receiver of this invention. It is a flowchart which shows the procedure which selects the power saving control method. It is a flowchart which shows the procedure of no change OFF control. It is a flowchart which shows the procedure of non-operation OFF control. It is a flowchart which shows the procedure of no signal OFF control. It is a figure which shows the example of the warning message displayed before power-off in case one screen is displayed on a display. It is a figure which shows the example of the warning message displayed on the screen used as the operation target before power-off in the case where the multi-screen is displayed on the display. It is a figure which shows a mode that LED turns on or blinks by the method according to the cause of a power-off after power-off.

Explanation of symbols

1 Television Receiver 11 Antenna 12 Tuner and Demodulator 13 Demultiplexer (TS-Demux)
DESCRIPTION OF SYMBOLS 14 A / V decoder 15 A / V output control part 16 Speaker 17 Display 18 System controller 19 Power saving control selection part 20 Operation detection part 21 Counter 22 AV signal detection part 23 Still picture detection part 24, 25 Terminal 26 Video / audio external input Part 27 Power supply part 28 LED
100 Externally connected devices

Claims (6)

A display device for displaying video,
Display means for displaying the video on a predetermined display unit;
An operation means for outputting an operation signal corresponding to a predetermined operation;
Video type determination means for determining the type of the video displayed on the display unit;
Operation presence / absence determination means for determining presence / absence of operation by the operation means;
Video change presence / absence detecting means for detecting whether or not the video has changed;
Video signal presence / absence detecting means for detecting whether or not a video signal corresponding to the video is supplied to the display unit;
When the video is the first type of video, when the video change presence / absence detection means determines that the video is unchanged, and the video signal presence / absence detection means supplies the video signal to the display unit. When it is determined that the video is not displayed, the display of the video is stopped by the display unit, and when the video is a second type of video, the video change presence / absence detecting unit determines that the video is unchanged. Control means for controlling to stop displaying the video by the display unit when the video signal is not supplied to the display unit by the video signal presence / absence detection unit. A display device characterized by that. 2. The display device according to claim 1, wherein when the display unit is displaying a plurality of videos at the same time, the control unit controls to stop the display for each video. A display control method for controlling a display device for displaying video,
A display step of displaying the video on a display unit;
An operation step for outputting an operation signal corresponding to a predetermined operation;
A video type determination step of determining the type of the video displayed on the display unit;
An operation presence / absence determination step for determining presence / absence of an operation in the operation step;
A video change presence / absence detection step for detecting whether or not the video has changed;
A video signal presence / absence detection step for detecting whether a video signal corresponding to the video is supplied to the display unit;
When the video is a first type of video, the video signal is supplied to the display unit when the video change presence / absence detection step determines that the video is unchanged and at the video signal presence / absence detection step When it is determined that the video is not displayed, the display of the video is stopped by the display unit, and when the video is a second type of video, it is determined that the video is unchanged in the video change presence / absence detection step. And a control step of controlling to stop displaying the video by the display unit when it is determined that the video signal is not supplied to the display unit in the video signal presence / absence detection step. A display control method characterized by the above. The display control method according to claim 3, wherein when the display unit is displaying a plurality of videos simultaneously, the control step is controlled to stop the display for each video. A display control program for controlling a display device that displays video,
A display step of displaying the video on a display unit;
An operation step for outputting an operation signal corresponding to a predetermined operation;
A video type determination step of determining the type of the video displayed on the display unit;
An operation presence / absence determination step for determining presence / absence of an operation in the operation step;
A video change presence / absence detection step for detecting whether or not the video has changed;
A video signal presence / absence detection step for detecting whether a video signal corresponding to the video is supplied to the display unit;
When the video is a first type of video, the video signal is supplied to the display unit when the video change presence / absence detection step determines that the video is unchanged and at the video signal presence / absence detection step When it is determined that the video is not displayed, the display of the video is stopped by the display unit, and when the video is a second type of video, it is determined that the video is unchanged in the video change presence / absence detection step. And a control step for controlling to stop displaying the video by the display unit when it is determined that the video signal is not supplied to the display unit in the video signal presence / absence detection step. A display control program which is executed by a display device. The display control program according to claim 5, wherein when the display unit is displaying a plurality of videos simultaneously, the control step is controlled to stop the display for each video.

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