WO2013140592A1 - Display device and method for controlling operation of display device - Google Patents

Display device and method for controlling operation of display device Download PDF

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Publication number
WO2013140592A1
WO2013140592A1 PCT/JP2012/057447 JP2012057447W WO2013140592A1 WO 2013140592 A1 WO2013140592 A1 WO 2013140592A1 JP 2012057447 W JP2012057447 W JP 2012057447W WO 2013140592 A1 WO2013140592 A1 WO 2013140592A1
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Prior art keywords
power
circuit
control
type projector
projection
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PCT/JP2012/057447
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French (fr)
Japanese (ja)
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修 富家
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Ｎｅｃディスプレイソリューションズ株式会社
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Priority to PCT/JP2012/057447 priority Critical patent/WO2013140592A1/en
Priority to JP2014505919A priority patent/JP5995293B2/en
Publication of WO2013140592A1 publication Critical patent/WO2013140592A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3147—Multi-projection systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2206/00—Systems for exchange of information between different pieces of apparatus, e.g. for exchanging trimming information, for photo finishing

Definitions

  • the present invention relates to a display device that projects an image and an operation control method of the display device, and more particularly to a technique for reducing power consumption in a standby mode.
  • a projection type projector device that projects an image on a screen or the like is used.
  • the projection type projector device can be controlled via a wired LAN or a wireless LAN, and can be remotely controlled by giving a signal for projecting an image to the projection type projector device via the wired LAN or the wireless LAN. It is possible to control the display of information.
  • a stack projection method in which a plurality of projection-type projector devices are used and the same image is projected from the plurality of projection-type projector devices onto the same screen to increase the brightness (for example, see Patent Document 1).
  • the stack projection method is used, the luminance can be increased as described above, and even when a person or the like is interposed between one projection type projector device and the screen among the plurality of projection type projector devices. Since the same image projected from another projection type projector device is displayed on the screen, it is avoided that the image becomes invisible.
  • a standby mode can be set to reduce power consumption.
  • power consumption is reduced by not supplying power to the circuit for projecting video.
  • a signal for projecting video is received via a wired LAN or wireless LAN. It is necessary to supply power to the circuit for this purpose.
  • a plurality of display devices are used, there is a problem that a plurality of power is consumed even in the standby mode.
  • the present invention has been made in view of the problems of the above-described technology, and in a display system using a plurality of display devices controlled by received control signals, power consumption in a standby mode in which no image is projected. It is an object of the present invention to provide a display device and an operation control method for the display device that can reduce the above.
  • the present invention provides: A display device that constitutes a display system that displays a provided image by projecting images from a plurality of display devices, A communication means for receiving the control signal; Image projection means for projecting an image according to the control signal; First control means for controlling the operation of the video projection means based on the control signal; Second control means for controlling power supply to the communication means and the first control means,
  • the first control unit is configured to supply power to the communication unit and the first control unit from a first standby mode in which power is not supplied to the communication unit and the first control unit.
  • a trigger signal is output when the communication means receives a mode transition signal for transitioning to the standby mode of
  • the second control means supplies power to the communication means and the first control means when the trigger signal is input in a state where power is not supplied to the communication means and the first control means. Supply.
  • a communication unit configured to receive a control signal; a video projection unit configured to project an image according to the control signal; a first control unit configured to control an operation of the video projection unit based on the control signal; And a second control means for controlling the power supply to the first control means, and the operation of the display device constituting the display system for displaying the provided video by projecting the video from the plurality of display devices
  • the first control means supplies power to the communication means and the first control means from a first standby mode in which power is not supplied to the communication means and the first control means.
  • the trigger signal is input when the second control unit is not supplying power to the communication unit and the first control unit, the communication unit and the first control unit are powered on. Processing to supply.
  • the power of the display device is supplied to the communication means.
  • the communication means receives a mode transition signal for shifting from the first standby mode in which power is not supplied to the communication means to the second standby mode in which power is supplied to the communication means.
  • the trigger signal output from the display device is input to a display device to which power is not supplied to the communication means, power is supplied to the communication means in this display device, so that no standby image is projected.
  • power may be supplied to communication means of one display device among a plurality of display devices constituting the display system.
  • FIG. 1 is a block diagram showing a configuration of an embodiment of a display system having a plurality of display devices of the present invention. It is a figure which shows the connection state in the back surface of the three projection type projector apparatuses shown in FIG. It is the block diagram which showed typically the internal circuit of the projection type projector apparatus shown in FIG.1 and FIG.2.
  • FIG. 4 is a flowchart for explaining an operation control method of the projection type projector device for reducing power consumption in the display system shown in FIGS. 1 to 3.
  • FIG. It is the block diagram which showed typically the internal circuit of other embodiment of the projection type projector apparatus used for the display system of this invention. It is the block diagram which showed typically the internal circuit of other embodiment of the projection type projector apparatus used for the display system of this invention.
  • FIG. 1 is a block diagram showing a configuration of an embodiment of a display system having a plurality of display devices according to the present invention.
  • FIG. 2 is a block diagram of three projection projectors 1a to 1c shown in FIG. It is a figure which shows the connection state in a back surface.
  • the present embodiment is composed of projection type projector devices 1a to 1c which are three display devices.
  • Each of the projection type projector devices 1a to 1c has a configuration in which a wired LAN cable 2 is connected to wired LAN ports 4a to 4c provided on the back surface, and is connected to a network via the wired LAN cable 2.
  • each of the projection type projector devices 1a to 1c is provided with trigger signal input ports 5a to 5c and trigger signal output ports 6a to 6c on the back surface, and the projection type projector device 1a and the projection type projector device 1b are provided.
  • Type projector device 1c is connected via trigger signal cable 3b connected to trigger signal output port 6b of projection type projector device 1b and trigger signal input port 5c of projection type projector device 1c.
  • the provided video is displayed on the screen by the stack projection method in which the same video is projected on the same screen from the three projection projectors 1a to 1c.
  • FIG. 3 is a block diagram schematically showing an internal circuit of the projection type projector apparatus 1a shown in FIGS.
  • the internal circuits of the projection type projector apparatuses 1b and 1c shown in FIGS. 1 and 2 have the same configuration.
  • the projection type projector device 1a shown in FIGS. 1 and 2 serves as a wired LAN circuit 11 serving as a communication unit, a projector projection circuit 13 serving as a video projection unit, and a first control unit.
  • the main CPU circuit 12, the sub CPU circuit 14 serving as a second control means, three power switch circuits 15 to 17, a power circuit 18, an infrared receiving circuit 21, and a key switch 22 are configured.
  • the wired LAN circuit 11 is connected to the wired LAN port 4a, operates with the power supplied from the power supply circuit 18, and is a LAN signal such as a control signal for projecting an image or a mode transition signal for shifting a mode. Are transmitted to and received from the network via the wired LAN port 4a.
  • the projector projection circuit 13 is operated by the power supplied from the power circuit 18 and projects an image corresponding to the signal received by the wired LAN circuit 11.
  • the main CPU circuit 12 operates by the power supplied from the power circuit 18 and controls the operation of the projector projection circuit 13 based on the signal received by the wired LAN circuit 11.
  • the main CPU circuit 12 controls the power supply from the power circuit 18 to the projector projection circuit 13 by controlling the power switch circuit 17.
  • the main CPU circuit 12 receives a trigger signal when the wired LAN circuit 11 receives a mode transition signal when the projection projector 1a is in the standby mode and the projection projector 1b is in the power saving mode. Is output via the trigger signal output port 6a.
  • the sub CPU circuit 14 is operated by the power supplied from the power circuit 18 and controls the power switch circuits 15 and 16 to control power supply from the power circuit 18 to the wired LAN circuit 11 and the main CPU circuit 12.
  • the power switch circuit 15 or 16 is controlled to supply power to the wired LAN circuit 11 and the main CPU circuit 12 from the power circuit 18. Control to be supplied.
  • the infrared receiving circuit 21 receives infrared rays from the outside and outputs a signal based on the infrared rays to the sub CPU circuit 14.
  • the key switch 22 is configured to be operable from the outside, and outputs a signal corresponding to the operation to the sub CPU circuit 14.
  • the three projection type projectors 1a to 1c have three power supply modes: a power saving mode that is a first standby mode, a standby mode that is a second standby mode, and a power ON mode. There is.
  • the power saving mode is a state in which only the sub CPU circuit 14 operates when power is supplied from the power supply circuit 18.
  • the wired LAN circuit 11 is not supplied with power by the power switch circuit 15 being controlled by the sub CPU circuit 14, and the main CPU circuit 12 is powered by the power switch circuit 16 in the sub CPU circuit 14. Power is not supplied by being controlled.
  • the projector projection circuit 13 is not supplied with power to the main CPU circuit 12, the power from the power circuit 18 is cut off by the power switch circuit 17 controlled by the main CPU circuit 12. Is not supplied and is not working.
  • the main CPU circuit 12 is not supplied with power, but when the signal for controlling the power switch circuit 17 is at “L” level, the power supplied from the power circuit 18 is cut off by the power switch circuit 17. If the power is controlled in this way, there is no problem even if the main CPU circuit 12 is not supplied with power.
  • power consumption can be suppressed as much as possible.
  • power ON mode power is supplied from the power circuit 18 to the projector projection circuit 13 by controlling the power switch circuit 17 in the main CPU circuit 12 from the standby mode described above, and an image is projected from the projector projection circuit 13. Is done.
  • the infrared receiving circuit 21 receives signals by infrared rays for shifting the projection type projector apparatuses 1a to 1c from the power saving mode to the standby mode. If the key switch 22 is operated to shift the projection type projector devices 1a to 1c from the power saving mode to the standby mode, the projection type projector devices 1a to 1c are changed from the power saving mode to the standby mode.
  • a signal for shifting is sent to the sub CPU circuit 14, and the power switch circuits 15 and 16 are controlled by the sub CPU circuit 14, whereby the power from the power circuit 18 is supplied to the wired LAN circuit 11 and the main CPU 12.
  • the projection type projector devices 1a to 1c are in standby mode. To migrate to de.
  • an infrared signal for shifting the projection type projector devices 1a to 1c to the power ON mode is received by the infrared receiving circuit 21, or the projection type projector device.
  • a signal for shifting the projection type projector devices 1a to 1c to the power ON mode is transmitted via the sub CPU circuit 14.
  • the power is supplied to the main CPU circuit 12, and the power switch circuit 17 is controlled by the main CPU circuit 12, whereby the power from the power circuit 18 is supplied to the projector projection circuit 14, and the projection type projector devices 1a to 1c are in the power ON mode. Based on the signal received via the wired LAN circuit 11.
  • Images are projected from the projector projection circuit 13 are. Since the wired LAN circuit 11 is also operating in the standby mode, a signal for shifting the projection type projector apparatuses 1a to 1c to the power ON mode is sent from the network via the wired LAN ports 4a to 4c. It is also possible to shift to the power-on mode by sending to.
  • an infrared signal for shifting the projection type projector apparatuses 1a to 1c from the power ON mode to the standby mode is sent to the infrared receiving circuit 21.
  • the projectors 1a to 1c are put into standby from the power-on mode when an operation is performed on the key switch 22 to shift the projection-type projector devices 1a to 1c from the power-on mode to the standby mode.
  • a signal for shifting to the mode is sent to the main CPU circuit 12 via the sub CPU circuit 14, and the power switch circuit 17 is controlled by the main CPU circuit 12, whereby the power from the power circuit 18 is supplied to the projector projection circuit 14.
  • Projection type pro Ekuta devices 1a ⁇ 1c is shifted to the standby mode.
  • the infrared receiving circuit 21 as described above may be used for an arbitrary time after the projection type projector devices 1a to 1c shift to the standby mode.
  • the power switch circuits 15 and 16 are controlled by the sub CPU circuit 14. As a result, power from the power supply circuit 18 is not supplied to the wired LAN circuit 11 and the main CPU 12, and the projection projectors 1a to 1c shift to the power saving mode.
  • FIG. 4 is a flowchart for explaining an operation control method of the projection type projector apparatuses 1a to 1c for reducing power consumption in the display system shown in FIGS.
  • only one projection type projector device 1a among the three projection type projector devices 1a to 1c shown in FIGS. 1 to 3 is set to the standby mode by the above-described control (step 1), and the others These two projectors 1b and 1c are set to the power saving mode by the control described above (steps 2 and 3).
  • the projection type projector device 1a in the standby mode can be controlled via the wired LAN
  • the projection type projector devices 1b and 1c in the power saving mode can be controlled via the wired LAN. Is impossible to control.
  • a mode transition signal for shifting the mode to the projection type projector apparatus 1a is sent to the network.
  • the mode transition signal is received by the wired LAN circuit 11 via the wired LAN port 4a of the projection type projector device 1a (step 4).
  • the projector projection circuit 13 projects an image instead of using a specific signal as a mode transition signal for making all the projectors 1a to 1c controllable via a wired LAN. It is also conceivable to use a control signal for this as a mode transition signal.
  • a trigger signal for shifting the projection type projector device 1b to the standby mode is output from the main CPU circuit 12 of the projection type projector device 1a via the trigger signal output port 6a (step 5).
  • the trigger signal output from the main CPU circuit 12 of the projection type projector apparatus 1a via the trigger signal output port 6a is input to the trigger signal input port 5b of the projection type projector apparatus 1b via the trigger signal cable 3a, and is projected. It is sent to the sub CPU circuit 14 of the projector device 1b (step 6).
  • the power switch circuits 15 and 16 are controlled by the sub CPU circuit 14, whereby the power from the power source circuit 18 is supplied to the wired LAN circuit 11 and the main CPU 12, and the projection type projector device 1b. Shifts to standby mode (step 7).
  • the wired LAN circuit 11 When the projection type projector device 1b shifts to the standby mode, the wired LAN circuit 11 is supplied with power, so that it can be controlled via the wired LAN, and then the mode transition signal is projected.
  • the main CPU circuit 12 of the projection projector apparatus 1b When received by the wired LAN circuit 11 via the wired LAN port 4b of the projector apparatus 1b (step 8), the main CPU circuit 12 of the projection projector apparatus 1b shifts the projection projector apparatus 1c to the standby mode.
  • a trigger signal is output through the trigger signal output port 6b (step 9).
  • the trigger signal output from the main CPU circuit 12 of the projection type projector apparatus 1b via the trigger signal output port 6b is input to the trigger signal input port 5c of the projection type projector apparatus 1c via the trigger signal cable 3b, and is projected. It is sent to the sub CPU circuit 14 of the projector device 1c (step 10).
  • the power switch circuits 15 and 16 are controlled by the sub CPU circuit 14, whereby the power from the power source circuit 18 is supplied to the wired LAN circuit 11 and the main CPU 12, and the projection type projector device 1c. Shifts to the standby mode (step 11). Thereby, also in the projection type projector apparatus 1c, when the power is supplied to the wired LAN circuit 11, the control through the wired LAN becomes possible.
  • all of the projection type projector apparatuses 1a to 1c are controlled via the wired LAN. It is not always necessary to supply power to the wired LAN circuit 11 for performing the operation. When power is supplied only to the wired LAN circuit 11 of one projection type projector apparatus 1a, control via the wired LAN is required. However, since it is only necessary to supply power to the wired LAN circuit 11 and shift to the standby mode for all of the projection type projector apparatuses 1a to 1c, it is possible to reduce the power consumption in the standby mode in which no video is projected.
  • FIG. 5 is a block diagram schematically showing an internal circuit of another embodiment of the display device of the present invention.
  • the projection type projector apparatus has a wireless LAN circuit 19 instead of the wired LAN circuit 11 and is controlled via a wireless LAN network as shown in FIG. Is different.
  • the projection of the image from the projector projection circuit 13 and the mode transition signal for shifting the mode are transmitted via a wireless LAN network. It is transmitted and received by the wireless LAN circuit 19.
  • FIG. 6 is a block diagram schematically showing an internal circuit of another embodiment of the display device of the present invention.
  • the projection type projector apparatus is provided with an infrared transmission circuit 23 instead of the trigger signal output port 6a and an infrared ray instead of the trigger signal input port 5a.
  • a receiving circuit 24 is provided, and a trigger signal is transmitted / received by the infrared transmitting / receiving means of the infrared transmitting circuit 23 and the infrared receiving circuit 24.
  • the trigger signal output from the main CPU circuit 12 is output as infrared rays from the infrared transmission circuit 23, and this trigger signal is output from the infrared reception circuit 24. It is received and sent to the sub CPU circuit 14. Therefore, in the projection type projector devices 1a to 1c in which the modes are sequentially shifted as described above, the infrared transmission circuit 23 of the projection type projector device 1a and the infrared reception circuit 24 of the projection type projector device 1b are opposed to each other, and By making the infrared transmission circuit 23 of the projection type projector device 1b and the infrared reception circuit 24 of the projection type projector device 1c face each other, the trigger signal is reliably transmitted and received.
  • one projection projector apparatus 1a is in the standby mode, and the remaining two projection projector apparatuses 1b and 1c are power-saving.
  • the projection type projector device 1b shifts to the standby mode by the trigger signal output from the projection type projector device 1a, and then the projection type by the trigger signal output from the projection type projector device 1b that shifts to the standby mode.
  • the projector apparatus 1c has been described by taking the case of shifting to the standby mode as an example. However, a trigger signal is output from the projection type projector apparatus 1a that is in the standby mode to the projection type projector apparatuses 1b and 1c that are in the power saving mode.
  • Projection type projector apparatus 1b, 1c is a projection type It may be configured to transition to the standby mode by receiving a trigger signal output from the projector unit 1a.
  • the display system of the present invention is not the stack projection system as described above, but projects one image divided from each of the projection type projector devices 1a to 1c onto one screen to display a provided image. It may be done.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Television Receiver Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

According to the present invention, only one projection-type projector device 1a of three projection-type projector devices 1a through 1c is set to a control-enabled standby mode via a network, and when setting all of the projection-type projector devices 1a through 1c to enable control via the network, the projection-type projector device 1b is switched from an energy-saving mode to the standby mode by outputting a trigger signal from the projection-type projector device 1a to the projection-type projector device 1b, and the projection-type projector device 1c is switched from the energy-saving mode to the standby mode by outputting a trigger signal from the projection-type projector device 1b, which has been switched to the standby mode, to the projection-type projector device 1c.

Description

表示装置及び表示装置の動作制御方法Display device and display device operation control method
　本発明は、映像を投射する表示装置及び表示装置の動作制御方法に関し、特に、待機モードにおける消費電力を削減する技術に関する。 The present invention relates to a display device that projects an image and an operation control method of the display device, and more particularly to a technique for reducing power consumption in a standby mode.
　プレゼンテーション等にて情報を表示する表示装置として、スクリーン等に映像を投射する投射型プロジェクタ装置が用いられている。投射型プロジェクタ装置は、有線ＬＡＮや無線ＬＡＮを介して制御を行うことが可能であり、映像を投射するための信号を有線ＬＡＮや無線ＬＡＮを介して投射型プロジェクタ装置に与えることにより、遠隔的に情報の表示制御を行うことができる。 As a display device that displays information in a presentation or the like, a projection type projector device that projects an image on a screen or the like is used. The projection type projector device can be controlled via a wired LAN or a wireless LAN, and can be remotely controlled by giving a signal for projecting an image to the projection type projector device via the wired LAN or the wireless LAN. It is possible to control the display of information.
　このような投射型プロジェクタ装置においては、複数の投射型プロジェクタ装置を用い、複数の投射型プロジェクタ装置から同一の映像を同一のスクリーンに投射することで輝度を高めるスタック投射方式が知られている（例えば、特許文献１参照）。スタック投射方式を用いた場合、上述したように輝度を高めることができるとともに、複数の投射型プロジェクタ装置のうち１つの投射型プロジェクタ装置とスクリーンとの間に人等が介在した場合であっても、他の投射型プロジェクタ装置から投射された同一の映像がスクリーン上に表示されているため、映像が見えなくなってしまうことが回避される。 In such a projection-type projector device, a stack projection method is known in which a plurality of projection-type projector devices are used and the same image is projected from the plurality of projection-type projector devices onto the same screen to increase the brightness ( For example, see Patent Document 1). When the stack projection method is used, the luminance can be increased as described above, and even when a person or the like is interposed between one projection type projector device and the screen among the plurality of projection type projector devices. Since the same image projected from another projection type projector device is displayed on the screen, it is avoided that the image becomes invisible.
特開２００６－１６５９４９号公報JP 2006-165949 A
　上述した投射型プロジェクタ装置のような有線ＬＡＮや無線ＬＡＮを介して制御される表示装置においては、消費電力を削減するためにスタンバイモードが設定可能となっている。このスタンバイモードにおいては、映像を投射するための回路に電源を供給しないことによって消費電力を削減しているが、その場合でも、映像を投射するための信号を有線ＬＡＮや無線ＬＡＮを介して受信するための回路に電源を供給しておく必要がある。上述したように複数の表示装置を用いた場合、スタンバイモードでも複数台の電力が消費されてしまうという問題点がある。 In a display device that is controlled via a wired LAN or a wireless LAN, such as the projection type projector device described above, a standby mode can be set to reduce power consumption. In this standby mode, power consumption is reduced by not supplying power to the circuit for projecting video. Even in this case, a signal for projecting video is received via a wired LAN or wireless LAN. It is necessary to supply power to the circuit for this purpose. As described above, when a plurality of display devices are used, there is a problem that a plurality of power is consumed even in the standby mode.
　本発明は、上述したような技術が有する問題点に鑑みてなされたものであって、受信した制御信号によって制御される表示装置を複数用いた表示システムにおいて、映像を投射しない待機モードにおける消費電力を削減することができる表示装置及び表示装置の動作制御方法を提供することを目的とする。 The present invention has been made in view of the problems of the above-described technology, and in a display system using a plurality of display devices controlled by received control signals, power consumption in a standby mode in which no image is projected. It is an object of the present invention to provide a display device and an operation control method for the display device that can reduce the above.
　上記目的を達成するために本発明は、
　複数の表示装置から映像を投射することで提供映像を表示する表示システムを構成する表示装置であって、
　制御信号を受信する通信手段と、
　前記制御信号に応じた映像を投射する映像投射手段と、
　前記制御信号に基づいて前記映像投射手段の動作を制御する第１の制御手段と、
　前記通信手段及び前記第１の制御手段への電源供給を制御する第２の制御手段とを有し、
　前記第１の制御手段は、前記通信手段及び前記第１の制御手段に電源が供給されていない第１の待機モードから前記通信手段及び前記第１の制御手段に電源が供給されている第２の待機モードに移行するモード移行信号を前記通信手段にて受信した場合にトリガ信号を出力し、
　前記第２の制御手段は、前記通信手段及び前記第１の制御手段に電源を供給していない状態において前記トリガ信号が入力された場合に、前記通信手段及び前記第１の制御手段に電源を供給する。 In order to achieve the above object, the present invention provides:
A display device that constitutes a display system that displays a provided image by projecting images from a plurality of display devices,
A communication means for receiving the control signal;
Image projection means for projecting an image according to the control signal;
First control means for controlling the operation of the video projection means based on the control signal;
Second control means for controlling power supply to the communication means and the first control means,
The first control unit is configured to supply power to the communication unit and the first control unit from a first standby mode in which power is not supplied to the communication unit and the first control unit. A trigger signal is output when the communication means receives a mode transition signal for transitioning to the standby mode of
The second control means supplies power to the communication means and the first control means when the trigger signal is input in a state where power is not supplied to the communication means and the first control means. Supply.
　また、制御信号を受信する通信手段と、前記制御信号に応じた映像を投射する映像投射手段と、前記制御信号に基づいて前記映像投射手段の動作を制御する第１の制御手段と、前記通信手段及び前記第１の制御手段への電源供給を制御する第２の制御手段とを有し、複数の表示装置から映像を投射することで提供映像を表示する表示システムを構成する表示装置の動作制御方法であって、
　前記第１の制御手段が、前記通信手段及び前記第１の制御手段に電源が供給されていない第１の待機モードから前記通信手段及び前記第１の制御手段に電源が供給されている第２の待機モードに移行するモード移行信号を前記通信手段にて受信した場合にトリガ信号を出力する処理と、
　前記第２の制御手段が、前記通信手段及び前記第１の制御手段に電源を供給していない状態において前記トリガ信号が入力された場合に、前記通信手段及び前記第１の制御手段に電源を供給する処理とを有する。 A communication unit configured to receive a control signal; a video projection unit configured to project an image according to the control signal; a first control unit configured to control an operation of the video projection unit based on the control signal; And a second control means for controlling the power supply to the first control means, and the operation of the display device constituting the display system for displaying the provided video by projecting the video from the plurality of display devices A control method,
The first control means supplies power to the communication means and the first control means from a first standby mode in which power is not supplied to the communication means and the first control means. Processing for outputting a trigger signal when the communication means receives a mode transition signal for transitioning to the standby mode of
When the trigger signal is input when the second control unit is not supplying power to the communication unit and the first control unit, the communication unit and the first control unit are powered on. Processing to supply.
　本発明によれば、表示システムを構成する複数の表示装置のうち１つを除いた表示装置の通信手段に電源が供給されていない状態においても、通信手段に電源が供給されている表示装置の通信手段にて、通信手段に電源が供給されていない第１の待機モードから通信手段に電源が供給されている第２の待機モードに移行するためのモード移行信号が受信された場合に、この表示装置から出力されるトリガ信号が、通信手段に電源が供給されていない表示装置に入力されることでこの表示装置においても通信手段に電源が供給されることとなるので、映像を投射しない待機モードにおいては、表示システムを構成する複数の表示装置のうち１つの表示装置の通信手段に電源を供給しておけばよい。それにより、受信した制御信号によって制御される表示装置を複数用いた表示システムにおいて、映像を投射しない待機モードにおける消費電力を削減することができる。 According to the present invention, even when power is not supplied to the communication means of the display device except for one of the plurality of display devices constituting the display system, the power of the display device is supplied to the communication means. When the communication means receives a mode transition signal for shifting from the first standby mode in which power is not supplied to the communication means to the second standby mode in which power is supplied to the communication means, When the trigger signal output from the display device is input to a display device to which power is not supplied to the communication means, power is supplied to the communication means in this display device, so that no standby image is projected. In the mode, power may be supplied to communication means of one display device among a plurality of display devices constituting the display system. Thereby, in a display system using a plurality of display devices controlled by the received control signal, it is possible to reduce power consumption in a standby mode in which no video is projected.
本発明の表示装置を複数有してなる表示システムの実施の一形態を示す構成ブロック図である。1 is a block diagram showing a configuration of an embodiment of a display system having a plurality of display devices of the present invention. 図１に示した３台の投射型プロジェクタ装置の裏面における接続状態を示す図である。It is a figure which shows the connection state in the back surface of the three projection type projector apparatuses shown in FIG. 図１及び図２に示した投射型プロジェクタ装置の内部回路を模式的に示したブロック図である。It is the block diagram which showed typically the internal circuit of the projection type projector apparatus shown in FIG.1 and FIG.2. 図１～図３に示した表示システムにおいて消費電力を削減するための投射型プロジェクタ装置の動作制御方法を説明するためのフローチャートである。FIG. 4 is a flowchart for explaining an operation control method of the projection type projector device for reducing power consumption in the display system shown in FIGS. 1 to 3. FIG. 本発明の表示システムに用いられる投射型プロジェクタ装置の他の実施の形態の内部回路を模式的に示したブロック図である。It is the block diagram which showed typically the internal circuit of other embodiment of the projection type projector apparatus used for the display system of this invention. 本発明の表示システムに用いられる投射型プロジェクタ装置の他の実施の形態の内部回路を模式的に示したブロック図である。It is the block diagram which showed typically the internal circuit of other embodiment of the projection type projector apparatus used for the display system of this invention.
　以下に、本発明の実施の形態について図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　図１は、本発明の表示装置を複数有してなる表示システムの実施の一形態を示す構成ブロック図であり、図２は、図１に示した３台の投射型プロジェクタ装置１ａ～１ｃの裏面における接続状態を示す図である。 FIG. 1 is a block diagram showing a configuration of an embodiment of a display system having a plurality of display devices according to the present invention. FIG. 2 is a block diagram of three projection projectors 1a to 1c shown in FIG. It is a figure which shows the connection state in a back surface.
　本形態は図１及び図２に示すように、３台の表示装置となる投射型プロジェクタ装置１ａ～１ｃから構成されている。投射型プロジェクタ装置１ａ～１ｃはそれぞれ、裏面に設けられた有線ＬＡＮポート４ａ～４ｃに有線ＬＡＮケーブル２が接続されており、この有線ＬＡＮケーブル２を介してネットワークに接続された構成となっている。また、投射型プロジェクタ装置１ａ～１ｃのそれぞれには、裏面にトリガ信号入力ポート５ａ～５ｃ及びトリガ信号出力ポート６ａ～６ｃが設けられており、投射型プロジェクタ装置１ａと投射型プロジェクタ装置１ｂとが、投射型プロジェクタ装置１ａのトリガ信号出力ポート６ａと投射型プロジェクタ装置１ｂのトリガ信号入力ポート５ｂとに接続されたトリガ信号ケーブル３ａを介して接続されており、また、投射型プロジェクタ装置１ｂと投射型プロジェクタ装置１ｃとが、投射型プロジェクタ装置１ｂのトリガ信号出力ポート６ｂと投射型プロジェクタ装置１ｃのトリガ信号入力ポート５ｃとに接続されたトリガ信号ケーブル３ｂを介して接続されている。 As shown in FIGS. 1 and 2, the present embodiment is composed of projection type projector devices 1a to 1c which are three display devices. Each of the projection type projector devices 1a to 1c has a configuration in which a wired LAN cable 2 is connected to wired LAN ports 4a to 4c provided on the back surface, and is connected to a network via the wired LAN cable 2. . In addition, each of the projection type projector devices 1a to 1c is provided with trigger signal input ports 5a to 5c and trigger signal output ports 6a to 6c on the back surface, and the projection type projector device 1a and the projection type projector device 1b are provided. Are connected via a trigger signal cable 3a connected to a trigger signal output port 6a of the projection type projector apparatus 1a and a trigger signal input port 5b of the projection type projector apparatus 1b. Type projector device 1c is connected via trigger signal cable 3b connected to trigger signal output port 6b of projection type projector device 1b and trigger signal input port 5c of projection type projector device 1c.
　このように構成された表示システムにおいては、３台の投射型プロジェクタ装置１ａ～１ｃから同一の映像を同一のスクリーンに投射するスタック投射方式によって提供映像がスクリーン上に表示されることになる。 In the display system configured as described above, the provided video is displayed on the screen by the stack projection method in which the same video is projected on the same screen from the three projection projectors 1a to 1c.
　図３は、図１及び図２に示した投射型プロジェクタ装置１ａの内部回路を模式的に示したブロック図である。なお、図１及び図２に示した投射型プロジェクタ装置１ｂ，１ｃの内部回路も同様の構成である。 FIG. 3 is a block diagram schematically showing an internal circuit of the projection type projector apparatus 1a shown in FIGS. The internal circuits of the projection type projector apparatuses 1b and 1c shown in FIGS. 1 and 2 have the same configuration.
　図１及び図２に示した投射型プロジェクタ装置１ａは、図３に示すように、通信手段となる有線ＬＡＮ回路１１と、映像投射手段となるプロジェクタ投射回路１３と、第１の制御手段となるメインＣＰＵ回路１２と、第２の制御手段となるサブＣＰＵ回路１４と、３つの電源スイッチ回路１５～１７と、電源回路１８と、赤外線受信回路２１と、キースイッチ２２とから構成されている。 As shown in FIG. 3, the projection type projector device 1a shown in FIGS. 1 and 2 serves as a wired LAN circuit 11 serving as a communication unit, a projector projection circuit 13 serving as a video projection unit, and a first control unit. The main CPU circuit 12, the sub CPU circuit 14 serving as a second control means, three power switch circuits 15 to 17, a power circuit 18, an infrared receiving circuit 21, and a key switch 22 are configured.
　有線ＬＡＮ回路１１は、有線ＬＡＮポート４ａに接続されており、電源回路１８から供給される電源によって動作し、映像を投射するための制御信号やモードを移行するためのモード移行信号等のＬＡＮ信号を、有線ＬＡＮポート４ａを介してネットワークとの間で送受信する。 The wired LAN circuit 11 is connected to the wired LAN port 4a, operates with the power supplied from the power supply circuit 18, and is a LAN signal such as a control signal for projecting an image or a mode transition signal for shifting a mode. Are transmitted to and received from the network via the wired LAN port 4a.
　プロジェクタ投射回路１３は、電源回路１８から供給される電源によって動作し、有線ＬＡＮ回路１１にて受信された信号に応じた映像を投射する。 The projector projection circuit 13 is operated by the power supplied from the power circuit 18 and projects an image corresponding to the signal received by the wired LAN circuit 11.
　メインＣＰＵ回路１２は、電源回路１８から供給される電源によって動作し、有線ＬＡＮ回路１１にて受信された信号に基づいてプロジェクタ投射回路１３の動作を制御する。また、メインＣＰＵ回路１２は、電源スイッチ回路１７を制御することによって、電源回路１８からプロジェクタ投射回路１３への電源供給を制御する。また、メインＣＰＵ回路１２は、投射型プロジェクタ装置１ａがスタンバイモードであり、投射型プロジェクタ装置１ｂが省電力モードである状態において、有線ＬＡＮ回路１１にてモード移行信号を受信した場合に、トリガ信号をトリガ信号出力ポート６ａを介して出力する。 The main CPU circuit 12 operates by the power supplied from the power circuit 18 and controls the operation of the projector projection circuit 13 based on the signal received by the wired LAN circuit 11. The main CPU circuit 12 controls the power supply from the power circuit 18 to the projector projection circuit 13 by controlling the power switch circuit 17. The main CPU circuit 12 receives a trigger signal when the wired LAN circuit 11 receives a mode transition signal when the projection projector 1a is in the standby mode and the projection projector 1b is in the power saving mode. Is output via the trigger signal output port 6a.
　サブＣＰＵ回路１４は、電源回路１８から供給される電源によって動作し、電源スイッチ回路１５，１６を制御することによって、電源回路１８から有線ＬＡＮ回路１１及びメインＣＰＵ回路１２への電源供給を制御するものであって、トリガ信号入力ポート５ａを介してトリガ信号が入力された場合に、電源スイッチ回路１５，１６を制御することによって、電源回路１８から有線ＬＡＮ回路１１及びメインＣＰＵ回路１２に電源が供給されるように制御する。 The sub CPU circuit 14 is operated by the power supplied from the power circuit 18 and controls the power switch circuits 15 and 16 to control power supply from the power circuit 18 to the wired LAN circuit 11 and the main CPU circuit 12. When a trigger signal is input via the trigger signal input port 5a, the power switch circuit 15 or 16 is controlled to supply power to the wired LAN circuit 11 and the main CPU circuit 12 from the power circuit 18. Control to be supplied.
　赤外線受信回路２１は、外部から赤外線を受信し、その赤外線による信号をサブＣＰＵ回路１４に出力する。 The infrared receiving circuit 21 receives infrared rays from the outside and outputs a signal based on the infrared rays to the sub CPU circuit 14.
　キースイッチ２２は、外部から操作可能に構成され、操作に応じた信号をサブＣＰＵ回路１４に出力する。 The key switch 22 is configured to be operable from the outside, and outputs a signal corresponding to the operation to the sub CPU circuit 14.
　以下に、上記のように構成された表示システムにおける投射型プロジェクタ装置１ａ～１ｃの動作について説明する。 Hereinafter, operations of the projection projectors 1a to 1c in the display system configured as described above will be described.
　まず、３台の投射型プロジェクタ装置１ａ～１ｃの電源のモードについて説明する。 First, the power modes of the three projection type projector devices 1a to 1c will be described.
　３台の投射型プロジェクタ装置１ａ～１ｃは、電源のモードとして、第１の待機モードである省電力モードと、第２の待機モードであるスタンバイモードと、電源ＯＮモードとの３つのモードの状態がある。 The three projection type projectors 1a to 1c have three power supply modes: a power saving mode that is a first standby mode, a standby mode that is a second standby mode, and a power ON mode. There is.
　省電力モードは、サブＣＰＵ回路１４のみが、電源回路１８から電源が供給されることによって動作している状態である。このとき、有線ＬＡＮ回路１１は、サブＣＰＵ回路１４において電源スイッチ回路１５が制御されることによって電源が供給されておらず、また、メインＣＰＵ回路１２は、サブＣＰＵ回路１４において電源スイッチ回路１６が制御されることによって電源が供給されていない。さらに、プロジェクタ投射回路１３は、メインＣＰＵ回路１２に電源が供給されていないことにより、電源回路１８からの電源が、メインＣＰＵ回路１２によって制御される電源スイッチ回路１７にて遮断されており、電源が供給されておらず動作していない。なお、メインＣＰＵ回路１２には電源が供給されていないが、電源スイッチ回路１７を制御する信号が“Ｌ”レベルの場合に、電源回路１８から供給される電源を電源スイッチ回路１７にて遮断するように制御されていればメインＣＰＵ回路１２に電源が供給されていなくても問題はない。以上のような省電力モード時には、サブＣＰＵ回路１４にしか電源が供給されていないため電力の消費を極力抑えることができる。 The power saving mode is a state in which only the sub CPU circuit 14 operates when power is supplied from the power supply circuit 18. At this time, the wired LAN circuit 11 is not supplied with power by the power switch circuit 15 being controlled by the sub CPU circuit 14, and the main CPU circuit 12 is powered by the power switch circuit 16 in the sub CPU circuit 14. Power is not supplied by being controlled. Further, since the projector projection circuit 13 is not supplied with power to the main CPU circuit 12, the power from the power circuit 18 is cut off by the power switch circuit 17 controlled by the main CPU circuit 12. Is not supplied and is not working. The main CPU circuit 12 is not supplied with power, but when the signal for controlling the power switch circuit 17 is at “L” level, the power supplied from the power circuit 18 is cut off by the power switch circuit 17. If the power is controlled in this way, there is no problem even if the main CPU circuit 12 is not supplied with power. In the power saving mode as described above, since power is supplied only to the sub CPU circuit 14, power consumption can be suppressed as much as possible.
　スタンバイモードにおいては、サブＣＰＵ回路１４において電源スイッチ回路１５が制御されることによって有線ＬＡＮ回路１１に電源回路１８からの電源が供給されており、また、サブＣＰＵ回路１４において電源スイッチ回路１６が制御されることによってメインＣＰＵ回路１２に電源回路１８からの電源が供給されている。 In the standby mode, power is supplied from the power circuit 18 to the wired LAN circuit 11 by controlling the power switch circuit 15 in the sub CPU circuit 14, and the power switch circuit 16 is controlled in the sub CPU circuit 14. As a result, the power from the power supply circuit 18 is supplied to the main CPU circuit 12.
　電源ＯＮモードにおいては、上述したスタンバイモードから、メインＣＰＵ回路１２において電源スイッチ回路１７が制御されることによってプロジェクタ投射回路１３に電源回路１８からの電源が供給され、プロジェクタ投射回路１３から映像が投射される。 In the power ON mode, power is supplied from the power circuit 18 to the projector projection circuit 13 by controlling the power switch circuit 17 in the main CPU circuit 12 from the standby mode described above, and an image is projected from the projector projection circuit 13. Is done.
　次に、モードを移行させる場合の制御方法について説明する。 Next, the control method when changing the mode will be described.
　投射型プロジェクタ装置１ａ～１ｃが省電力モードからスタンバイモードに移行する場合は、投射型プロジェクタ装置１ａ～１ｃを省電力モードからスタンバイモードに移行させるための赤外線による信号が赤外線受信回路２１にて受信されたり、投射型プロジェクタ装置１ａ～１ｃを省電力モードからスタンバイモードに移行させるための操作がキースイッチ２２に対して行われたりすると、投射型プロジェクタ装置１ａ～１ｃを省電力モードからスタンバイモードに移行させるための信号がサブＣＰＵ回路１４に送られ、サブＣＰＵ回路１４にて電源スイッチ回路１５，１６が制御されることによって電源回路１８からの電源が有線ＬＡＮ回路１１及びメインＣＰＵ１２に供給され、投射型プロジェクタ装置１ａ～１ｃがスタンバイモードに移行する。 When the projection type projector apparatuses 1a to 1c shift from the power saving mode to the standby mode, the infrared receiving circuit 21 receives signals by infrared rays for shifting the projection type projector apparatuses 1a to 1c from the power saving mode to the standby mode. If the key switch 22 is operated to shift the projection type projector devices 1a to 1c from the power saving mode to the standby mode, the projection type projector devices 1a to 1c are changed from the power saving mode to the standby mode. A signal for shifting is sent to the sub CPU circuit 14, and the power switch circuits 15 and 16 are controlled by the sub CPU circuit 14, whereby the power from the power circuit 18 is supplied to the wired LAN circuit 11 and the main CPU 12. The projection type projector devices 1a to 1c are in standby mode. To migrate to de.
　また、投射型プロジェクタ装置１ａ～１ｃがスタンバイモードの状態において、投射型プロジェクタ装置１ａ～１ｃを電源ＯＮモードに移行させるための赤外線による信号が赤外線受信回路２１にて受信されたり、投射型プロジェクタ装置１ａ～１ｃを電源ＯＮモードに移行させるための操作がキースイッチ２２に対して行われたりすると、投射型プロジェクタ装置１ａ～１ｃを電源ＯＮモードに移行させるための信号がサブＣＰＵ回路１４を介してメインＣＰＵ回路１２に送られ、メインＣＰＵ回路１２にて電源スイッチ回路１７が制御されることによって電源回路１８からの電源がプロジェクタ投射回路１４に供給され、投射型プロジェクタ装置１ａ～１ｃが電源ＯＮモードに移行し、有線ＬＡＮ回路１１を介して受信された信号に基づいてプロジェクタ投射回路１３から映像が投射される。なお、スタンバイモードでは、有線ＬＡＮ回路１１も動作しているので、投射型プロジェクタ装置１ａ～１ｃを電源ＯＮモードに移行させるための信号をネットワークから有線ＬＡＮポート４ａ～４ｃを介して有線ＬＡＮ回路１１に送ることで電源ＯＮモードに移行することも可能である。 In addition, when the projection type projector devices 1a to 1c are in the standby mode, an infrared signal for shifting the projection type projector devices 1a to 1c to the power ON mode is received by the infrared receiving circuit 21, or the projection type projector device. When an operation for shifting 1a to 1c to the power ON mode is performed on the key switch 22, a signal for shifting the projection type projector devices 1a to 1c to the power ON mode is transmitted via the sub CPU circuit 14. The power is supplied to the main CPU circuit 12, and the power switch circuit 17 is controlled by the main CPU circuit 12, whereby the power from the power circuit 18 is supplied to the projector projection circuit 14, and the projection type projector devices 1a to 1c are in the power ON mode. Based on the signal received via the wired LAN circuit 11. Images are projected from the projector projection circuit 13 are. Since the wired LAN circuit 11 is also operating in the standby mode, a signal for shifting the projection type projector apparatuses 1a to 1c to the power ON mode is sent from the network via the wired LAN ports 4a to 4c. It is also possible to shift to the power-on mode by sending to.
　このようにして投射型プロジェクタ装置１ａ～１ｃの全てが電源ＯＮモードとなり、投射型プロジェクタ装置１ａ～１ｃのそれぞれから同一の映像が同一のスクリーンに投射されることで、輝度が高い提供映像が表示されることになる。 In this way, all of the projection type projector devices 1a to 1c are in the power ON mode, and the same video is projected from the respective projection type projector devices 1a to 1c onto the same screen, so that the provided video with high luminance is displayed. Will be.
　逆に投射型プロジェクタ装置１ａ～１ｃが電源ＯＮモードからスタンバイモードに移行するときは、投射型プロジェクタ装置１ａ～１ｃを電源ＯＮモードからスタンバイモードに移行させるための赤外線による信号が赤外線受信回路２１にて受信されたり、投射型プロジェクタ装置１ａ～１ｃを電源ＯＮモードからスタンバイモードに移行させるための操作がキースイッチ２２に対して行われたりすると、投射型プロジェクタ装置１ａ～１ｃを電源ＯＮモードからスタンバイモードに移行させるための信号がサブＣＰＵ回路１４を介してメインＣＰＵ回路１２に送られ、メインＣＰＵ回路１２にて電源スイッチ回路１７が制御されることによって電源回路１８からの電源がプロジェクタ投射回路１４に供給されない状態となり、投射型プロジェクタ装置１ａ～１ｃがスタンバイモードに移行する。 On the contrary, when the projection type projector apparatuses 1a to 1c shift from the power ON mode to the standby mode, an infrared signal for shifting the projection type projector apparatuses 1a to 1c from the power ON mode to the standby mode is sent to the infrared receiving circuit 21. Or the projectors 1a to 1c are put into standby from the power-on mode when an operation is performed on the key switch 22 to shift the projection-type projector devices 1a to 1c from the power-on mode to the standby mode. A signal for shifting to the mode is sent to the main CPU circuit 12 via the sub CPU circuit 14, and the power switch circuit 17 is controlled by the main CPU circuit 12, whereby the power from the power circuit 18 is supplied to the projector projection circuit 14. Projection type pro Ekuta devices 1a ~ 1c is shifted to the standby mode.
　スタンバイモードとなった投射型プロジェクタ装置１ａ～１ｃが省電力モードに移行する場合は、例えば、投射型プロジェクタ装置１ａ～１ｃがスタンバイモードに移行したのち任意の時間、上述したような赤外線受信回路２１における赤外線によるモード移行の信号の受信や、キースイッチ２２に対する操作や、有線ＬＡＮ回路１１におけるモード移行の信号の受信がない場合、サブＣＰＵ回路１４にて電源スイッチ回路１５，１６が制御されることによって電源回路１８からの電源が有線ＬＡＮ回路１１及びメインＣＰＵ１２に供給されなくなり、投射型プロジェクタ装置１ａ～１ｃが省電力モードに移行する。ここで、例えば、スタンバイモード時に有線ＬＡＮを用いて制御したいユーザーがいた場合は自動で省電力モードに移行しない設定にしておけばスタンバイモードにとどまることも可能である。つまり、電源ＯＮモード以外のときにユーザーが有線ＬＡＮを介した制御を行いたければスタンバイモードで待機させ、有線ＬＡＮを介した制御を行わないのであればより消費電力を削減できる省電力モードで待機させることが選択できる。 When the projection type projector devices 1a to 1c that have entered the standby mode shift to the power saving mode, for example, the infrared receiving circuit 21 as described above may be used for an arbitrary time after the projection type projector devices 1a to 1c shift to the standby mode. When there is no reception of a mode shift signal by infrared rays, no operation on the key switch 22, or no mode shift signal is received by the wired LAN circuit 11, the power switch circuits 15 and 16 are controlled by the sub CPU circuit 14. As a result, power from the power supply circuit 18 is not supplied to the wired LAN circuit 11 and the main CPU 12, and the projection projectors 1a to 1c shift to the power saving mode. Here, for example, if there is a user who wants to control using the wired LAN in the standby mode, it is possible to stay in the standby mode if the setting is made so as not to automatically shift to the power saving mode. In other words, when the user wants to perform control via the wired LAN in a mode other than the power-on mode, the user is put on standby in the standby mode. Can be selected.
　以下に、本願発明によって消費電力を削減するための制御方法について説明する。 Hereinafter, a control method for reducing power consumption according to the present invention will be described.
　図４は、図１～図３に示した表示システムにおいて消費電力を削減するための投射型プロジェクタ装置１ａ～１ｃの動作制御方法を説明するためのフローチャートである。 FIG. 4 is a flowchart for explaining an operation control method of the projection type projector apparatuses 1a to 1c for reducing power consumption in the display system shown in FIGS.
　上述したように、スタック投射方式で複数台の投射型プロジェクタ装置を、有線ＬＡＮを介して制御する場合、全ての投射型プロジェクタ装置について有線ＬＡＮ回路が動作状態となるスタンバイモードにしておく必要があり、それにより消費電力が増えてしまう問題があった。 As described above, when a plurality of projection type projector devices are controlled via a wired LAN in the stack projection method, it is necessary to set the standby mode in which the wired LAN circuit is in an operating state for all the projection type projector devices. As a result, there is a problem that power consumption increases.
　本形態においては、図１～図３に示した３台の投射型プロジェクタ装置１ａ～１ｃのうち１つの投射型プロジェクタ装置１ａのみを上述した制御によってスタンバイモードにしておき（ステップ１）、それ以外の２台の投射型プロジェクタ装置１ｂ，１ｃを上述した制御によって省電力モードにしておく（ステップ２，３）。この状態においては、スタンバイモードとなっている投射型プロジェクタ装置１ａは有線ＬＡＮを介しての制御が可能であるものの、省電力モードとなっている投射型プロジェクタ装置１ｂ，１ｃは有線ＬＡＮを介しての制御が不可能となっている。 In this embodiment, only one projection type projector device 1a among the three projection type projector devices 1a to 1c shown in FIGS. 1 to 3 is set to the standby mode by the above-described control (step 1), and the others These two projectors 1b and 1c are set to the power saving mode by the control described above (steps 2 and 3). In this state, although the projection type projector device 1a in the standby mode can be controlled via the wired LAN, the projection type projector devices 1b and 1c in the power saving mode can be controlled via the wired LAN. Is impossible to control.
　この状態から投射型プロジェクタ装置１ａ～１ｃの全てを、有線ＬＡＮを介して制御が可能な状態にする場合、まず、投射型プロジェクタ装置１ａに対してモードを移行するためのモード移行信号をネットワークを介して送信すると、モード移行信号が投射型プロジェクタ装置１ａの有線ＬＡＮポート４ａを介して有線ＬＡＮ回路１１にて受信される（ステップ４）。なお、投射型プロジェクタ装置１ａ～１ｃの全てを、有線ＬＡＮを介して制御が可能な状態にするためのモード移行信号として特定の信号を用いるのではなく、プロジェクタ投射回路１３にて映像を投射するための制御信号をモード移行信号として用いることも考えられる。 When all of the projection type projector apparatuses 1a to 1c are set to a state in which control is possible via the wired LAN from this state, first, a mode transition signal for shifting the mode to the projection type projector apparatus 1a is sent to the network. Then, the mode transition signal is received by the wired LAN circuit 11 via the wired LAN port 4a of the projection type projector device 1a (step 4). Note that the projector projection circuit 13 projects an image instead of using a specific signal as a mode transition signal for making all the projectors 1a to 1c controllable via a wired LAN. It is also conceivable to use a control signal for this as a mode transition signal.
　すると、投射型プロジェクタ装置１ａのメインＣＰＵ回路１２から、投射型プロジェクタ装置１ｂをスタンバイモードに移行させるためのトリガ信号がトリガ信号出力ポート６ａを介して出力される（ステップ５）。 Then, a trigger signal for shifting the projection type projector device 1b to the standby mode is output from the main CPU circuit 12 of the projection type projector device 1a via the trigger signal output port 6a (step 5).
　投射型プロジェクタ装置１ａのメインＣＰＵ回路１２からトリガ信号出力ポート６ａを介して出力されたトリガ信号は、トリガ信号ケーブル３ａを介して投射型プロジェクタ装置１ｂのトリガ信号入力ポート５ｂに入力され、投射型プロジェクタ装置１ｂのサブＣＰＵ回路１４に送られる（ステップ６）。 The trigger signal output from the main CPU circuit 12 of the projection type projector apparatus 1a via the trigger signal output port 6a is input to the trigger signal input port 5b of the projection type projector apparatus 1b via the trigger signal cable 3a, and is projected. It is sent to the sub CPU circuit 14 of the projector device 1b (step 6).
　すると、投射型プロジェクタ装置１ｂにおいて、サブＣＰＵ回路１４にて電源スイッチ回路１５，１６が制御されることによって電源回路１８からの電源が有線ＬＡＮ回路１１及びメインＣＰＵ１２に供給され、投射型プロジェクタ装置１ｂがスタンバイモードに移行する（ステップ７）。 Then, in the projection type projector device 1b, the power switch circuits 15 and 16 are controlled by the sub CPU circuit 14, whereby the power from the power source circuit 18 is supplied to the wired LAN circuit 11 and the main CPU 12, and the projection type projector device 1b. Shifts to standby mode (step 7).
　投射型プロジェクタ装置１ｂは、スタンバイモードに移行すると、有線ＬＡＮ回路１１に電源が供給されていることにより、有線ＬＡＮを介した制御が可能な状態となっており、その後、上記モード移行信号が投射型プロジェクタ装置１ｂの有線ＬＡＮポート４ｂを介して有線ＬＡＮ回路１１にて受信されると（ステップ８）、投射型プロジェクタ装置１ｂのメインＣＰＵ回路１２から、投射型プロジェクタ装置１ｃをスタンバイモードに移行させるためのトリガ信号がトリガ信号出力ポート６ｂを介して出力される（ステップ９）。 When the projection type projector device 1b shifts to the standby mode, the wired LAN circuit 11 is supplied with power, so that it can be controlled via the wired LAN, and then the mode transition signal is projected. When received by the wired LAN circuit 11 via the wired LAN port 4b of the projector apparatus 1b (step 8), the main CPU circuit 12 of the projection projector apparatus 1b shifts the projection projector apparatus 1c to the standby mode. A trigger signal is output through the trigger signal output port 6b (step 9).
　投射型プロジェクタ装置１ｂのメインＣＰＵ回路１２からトリガ信号出力ポート６ｂを介して出力されたトリガ信号は、トリガ信号ケーブル３ｂを介して投射型プロジェクタ装置１ｃのトリガ信号入力ポート５ｃに入力され、投射型プロジェクタ装置１ｃのサブＣＰＵ回路１４に送られる（ステップ１０）。 The trigger signal output from the main CPU circuit 12 of the projection type projector apparatus 1b via the trigger signal output port 6b is input to the trigger signal input port 5c of the projection type projector apparatus 1c via the trigger signal cable 3b, and is projected. It is sent to the sub CPU circuit 14 of the projector device 1c (step 10).
　すると、投射型プロジェクタ装置１ｃにおいて、サブＣＰＵ回路１４にて電源スイッチ回路１５，１６が制御されることによって電源回路１８からの電源が有線ＬＡＮ回路１１及びメインＣＰＵ１２に供給され、投射型プロジェクタ装置１ｃがスタンバイモードに移行する（ステップ１１）。これにより、投射型プロジェクタ装置１ｃにおいても、有線ＬＡＮ回路１１に電源が供給されていることにより、有線ＬＡＮを介した制御が可能な状態となる。 Then, in the projection type projector device 1c, the power switch circuits 15 and 16 are controlled by the sub CPU circuit 14, whereby the power from the power source circuit 18 is supplied to the wired LAN circuit 11 and the main CPU 12, and the projection type projector device 1c. Shifts to the standby mode (step 11). Thereby, also in the projection type projector apparatus 1c, when the power is supplied to the wired LAN circuit 11, the control through the wired LAN becomes possible.
　このように、複数の投射型プロジェクタ装置１ａ～１ｃから同一の映像を同一のスクリーンに投射するスタック投射方式による表示システムにおいて、投射型プロジェクタ装置１ａ～１ｃの全てについて、有線ＬＡＮを介した制御を行うための有線ＬＡＮ回路１１に常に電力を供給しておく必要はなく、１つの投射型プロジェクタ装置１ａの有線ＬＡＮ回路１１のみに電力を供給しておき、有線ＬＡＮを介した制御が必要な場合のみ、投射型プロジェクタ装置１ａ～１ｃの全てについて有線ＬＡＮ回路１１に電力を供給してスタンバイモードに移行すればよいため、映像を投射しない待機モードにおける消費電力を削減することが可能となる。 As described above, in the display system based on the stack projection system in which the same image is projected from the plurality of projection type projector apparatuses 1a to 1c onto the same screen, all of the projection type projector apparatuses 1a to 1c are controlled via the wired LAN. It is not always necessary to supply power to the wired LAN circuit 11 for performing the operation. When power is supplied only to the wired LAN circuit 11 of one projection type projector apparatus 1a, control via the wired LAN is required. However, since it is only necessary to supply power to the wired LAN circuit 11 and shift to the standby mode for all of the projection type projector apparatuses 1a to 1c, it is possible to reduce the power consumption in the standby mode in which no video is projected.
　（他の実施の形態）
　図５は、本発明の表示装置の他の実施の形態の内部回路を模式的に示したブロック図である。 (Other embodiments)
FIG. 5 is a block diagram schematically showing an internal circuit of another embodiment of the display device of the present invention.
　本形態における投射型プロジェクタ装置は図５に示すように、図３に示したものに対して、有線ＬＡＮ回路１１の代わりに無線ＬＡＮ回路１９を設け、無線ＬＡＮのネットワークを介して制御されるものである点が異なるものである。 As shown in FIG. 5, the projection type projector apparatus according to this embodiment has a wireless LAN circuit 19 instead of the wired LAN circuit 11 and is controlled via a wireless LAN network as shown in FIG. Is different.
　上記のように構成された投射型プロジェクタ装置を用いた表示システムにおいては、上述したプロジェクタ投射回路１３からの映像の投射や、モードを移行するためのモード移行信号は、無線ＬＡＮのネットワークを介して送信されてきて無線ＬＡＮ回路１９にて受信されることになる。 In the display system using the projection type projector device configured as described above, the projection of the image from the projector projection circuit 13 and the mode transition signal for shifting the mode are transmitted via a wireless LAN network. It is transmitted and received by the wireless LAN circuit 19.
　図６は、本発明の表示装置の他の実施の形態の内部回路を模式的に示したブロック図である。 FIG. 6 is a block diagram schematically showing an internal circuit of another embodiment of the display device of the present invention.
　本形態における投射型プロジェクタ装置は図６に示すように、図３に示したものに対して、トリガ信号出力ポート６ａの代わりに赤外線送信回路２３を設けるとともに、トリガ信号入力ポート５ａの代わりに赤外線受信回路２４を設け、これら赤外線送信回路２３及び赤外線受信回路２４の赤外線送受信手段によって、トリガ信号が送受信される点が異なるものである。 As shown in FIG. 6, the projection type projector apparatus according to this embodiment is provided with an infrared transmission circuit 23 instead of the trigger signal output port 6a and an infrared ray instead of the trigger signal input port 5a. A receiving circuit 24 is provided, and a trigger signal is transmitted / received by the infrared transmitting / receiving means of the infrared transmitting circuit 23 and the infrared receiving circuit 24.
　上記のように構成された投射型プロジェクタ装置を用いた表示システムにおいては、メインＣＰＵ回路１２から出力されたトリガ信号が赤外線送信回路２３から赤外線として出力され、このトリガ信号が赤外線受信回路２４にて受信され、サブＣＰＵ回路１４に送られることなる。そのため、上述したようにモードが順次移行していく投射型プロジェクタ装置１ａ～１ｃにおいては、投射型プロジェクタ装置１ａの赤外線送信回路２３と投射型プロジェクタ装置１ｂの赤外線受信回路２４とを対向させ、かつ、投射型プロジェクタ装置１ｂの赤外線送信回路２３と投射型プロジェクタ装置１ｃの赤外線受信回路２４とを対向させることにより、トリガ信号が確実に送受信されることとなる。 In the display system using the projection type projector device configured as described above, the trigger signal output from the main CPU circuit 12 is output as infrared rays from the infrared transmission circuit 23, and this trigger signal is output from the infrared reception circuit 24. It is received and sent to the sub CPU circuit 14. Therefore, in the projection type projector devices 1a to 1c in which the modes are sequentially shifted as described above, the infrared transmission circuit 23 of the projection type projector device 1a and the infrared reception circuit 24 of the projection type projector device 1b are opposed to each other, and By making the infrared transmission circuit 23 of the projection type projector device 1b and the infrared reception circuit 24 of the projection type projector device 1c face each other, the trigger signal is reliably transmitted and received.
　なお、上述した実施の形態においては、３台の投射型プロジェクタ装置１ａ～１ｃのうち、１台の投射型プロジェクタ装置１ａをスタンバイモード、残りの２台の投射型プロジェクタ装置１ｂ，１ｃを省電力モードにしておき、投射型プロジェクタ装置１ａから出力されたトリガ信号によって投射型プロジェクタ装置１ｂがスタンバイモードに移行し、その後、スタンバイモードに移行した投射型プロジェクタ装置１ｂから出力されたトリガ信号によって投射型プロジェクタ装置１ｃがスタンバイモードに移行するものを例に挙げて説明したが、スタンバイモードである投射型プロジェクタ装置１ａから、省電力モードである投射型プロジェクタ装置１ｂ，１ｃにトリガ信号を出力し、これら投射型プロジェクタ装置１ｂ，１ｃが、投射型プロジェクタ装置１ａから出力されたトリガ信号を受信することによってスタンバイモードに移行するものであってもよい。 In the embodiment described above, of the three projection projector apparatuses 1a to 1c, one projection projector apparatus 1a is in the standby mode, and the remaining two projection projector apparatuses 1b and 1c are power-saving. In the mode, the projection type projector device 1b shifts to the standby mode by the trigger signal output from the projection type projector device 1a, and then the projection type by the trigger signal output from the projection type projector device 1b that shifts to the standby mode. The projector apparatus 1c has been described by taking the case of shifting to the standby mode as an example. However, a trigger signal is output from the projection type projector apparatus 1a that is in the standby mode to the projection type projector apparatuses 1b and 1c that are in the power saving mode. Projection type projector apparatus 1b, 1c is a projection type It may be configured to transition to the standby mode by receiving a trigger signal output from the projector unit 1a.
　また、本発明の表示システムは、上述したようなスタック投射方式ではなく、投射型プロジェクタ装置１ａ～１ｃのそれぞれから１つの映像を分割したものを１つのスクリーンに対して投射して提供画像が表示されるものであってもよい。 In addition, the display system of the present invention is not the stack projection system as described above, but projects one image divided from each of the projection type projector devices 1a to 1c onto one screen to display a provided image. It may be done.

Claims (5)

  1. 　複数の表示装置から映像を投射することで提供映像を表示する表示システムを構成する表示装置であって、
    　制御信号を受信する通信手段と、
    　前記制御信号に応じた映像を投射する映像投射手段と、
    　前記制御信号に基づいて前記映像投射手段の動作を制御する第１の制御手段と、
    　前記通信手段及び前記第１の制御手段への電源供給を制御する第２の制御手段とを有し、
    　前記第１の制御手段は、前記通信手段及び前記第１の制御手段に電源が供給されていない第１の待機モードから前記通信手段及び前記第１の制御手段に電源が供給されている第２の待機モードに移行するためのモード移行信号を前記通信手段にて受信した場合にトリガ信号を出力し、
    　前記第２の制御手段は、前記通信手段及び前記第１の制御手段に電源を供給していない状態において前記トリガ信号が入力された場合に、前記通信手段及び前記第１の制御手段に電源を供給する表示装置。     A display device that constitutes a display system that displays a provided image by projecting images from a plurality of display devices,
    A communication means for receiving the control signal;
    Image projection means for projecting an image according to the control signal;
    First control means for controlling the operation of the video projection means based on the control signal;
    Second control means for controlling power supply to the communication means and the first control means,
    The first control unit is configured to supply power to the communication unit and the first control unit from a first standby mode in which power is not supplied to the communication unit and the first control unit. A trigger signal is output when the communication means receives a mode transition signal for transitioning to the standby mode,
    The second control means supplies power to the communication means and the first control means when the trigger signal is input in a state where power is not supplied to the communication means and the first control means. Display device to supply.
  2. 　請求項１に記載の表示装置において、
    　前記通信手段は、有線を介して信号を受信する表示装置。     The display device according to claim 1,
    The communication means is a display device that receives a signal via a wire.
  3. 　請求項１に記載の表示装置において、
    　前記通信手段は、無線を介して信号を受信する表示装置。     The display device according to claim 1,
    The communication means is a display device that receives a signal via radio.
  4. 　請求項１乃至３のいずれか１項に記載の表示装置において、
    　前記トリガ信号を赤外線によって送受信する赤外線送受信手段を有する表示装置。     The display device according to any one of claims 1 to 3,
    A display device comprising infrared transmission / reception means for transmitting and receiving the trigger signal by infrared.
  5. 　制御信号を受信する通信手段と、前記制御信号に応じた映像を投射する映像投射手段と、前記制御信号に基づいて前記映像投射手段の動作を制御する第１の制御手段と、前記通信手段及び前記第１の制御手段への電源供給を制御する第２の制御手段とを有し、複数の表示装置から映像を投射することで提供映像を表示する表示システムを構成する表示装置の動作制御方法であって、
    　前記第１の制御手段が、モードを移行するモード移行信号を前記通信手段にて受信した場合にトリガ信号を出力する処理と、
    　前記第２の制御手段が、前記通信手段及び前記第１の制御手段に電源を供給していない状態において前記トリガ信号が入力された場合に、前記通信手段及び前記第１の制御手段に電源を供給する処理とを有する、表示装置の制御方法。     A communication means for receiving a control signal; a video projection means for projecting an image according to the control signal; a first control means for controlling an operation of the video projection means based on the control signal; the communication means; And a second control means for controlling power supply to the first control means, and an operation control method for a display device constituting a display system for displaying a provided video by projecting video from a plurality of display devices. Because
    Processing for outputting a trigger signal when the first control means receives a mode transition signal for mode transition at the communication means;
    When the trigger signal is input when the second control unit is not supplying power to the communication unit and the first control unit, the communication unit and the first control unit are powered on. A display device control method.
PCT/JP2012/057447 2012-03-23 2012-03-23 Display device and method for controlling operation of display device WO2013140592A1 (en)

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JP2004289361A (en) * 2003-03-20 2004-10-14 Ricoh Co Ltd Image forming apparatus and composite apparatus
JP2005234107A (en) * 2004-02-18 2005-09-02 Seiko Epson Corp Image projection method, image projection system, image processor and optical processing apparatus
JP2010010942A (en) * 2008-06-25 2010-01-14 Ricoh Co Ltd Image formation system and image formation method
JP2012047849A (en) * 2010-08-25 2012-03-08 Canon Inc Projection type display system and projection type display apparatus

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