WO2011105228A1 - Projection image display device - Google Patents

Projection image display device Download PDF

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Publication number
WO2011105228A1
WO2011105228A1 PCT/JP2011/052912 JP2011052912W WO2011105228A1 WO 2011105228 A1 WO2011105228 A1 WO 2011105228A1 JP 2011052912 W JP2011052912 W JP 2011052912W WO 2011105228 A1 WO2011105228 A1 WO 2011105228A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
control unit
projection
mode
Prior art date
Application number
PCT/JP2011/052912
Other languages
French (fr)
Japanese (ja)
Inventor
前田　誠
増谷　健
創右 大谷
Original Assignee
三洋電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2011105228A1 publication Critical patent/WO2011105228A1/en

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Classifications

    • 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
    • G03B21/28—Reflectors in projection beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
    • H04N21/4436—Power management, e.g. shutting down unused components of the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon ambient light
    • 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
    • H04N9/315—Modulator illumination systems
    • H04N9/3155—Modulator illumination systems for controlling the light source
    • 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
    • H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability
    • 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]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
    • 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]
    • H04N9/3191—Testing thereof
    • H04N9/3194—Testing thereof including sensor feedback

Definitions

  • the present invention relates to a projection type video display apparatus including a light modulation element that modulates light emitted from a light source, and a projection optical system that projects light emitted from the light modulation element on a projection surface.
  • a projection type video display apparatus including a light modulation element for modulating light emitted from a light source and a projection optical system for projecting light emitted from the light modulation element onto a projection surface.
  • Patent Document 1 a technology for saving power has been proposed (for example, Patent Document 1).
  • a device such as a mobile phone has a power saving mode, and power saving can be achieved by reducing the gray scale of the display and the driving voltage in the power saving mode.
  • the power saving mode is canceled by the operation of an operation unit (button or the like) provided on the device body.
  • an object of the present invention is to provide a projection type video display device capable of easily canceling the power saving mode.
  • the projection type image display apparatus comprises a light modulation element (DMD 70) for modulating light emitted from a light source (light source 10), and projecting light emitted from the light modulation element on a projection surface And a projection optical system (projection optical system 110).
  • the projection type video display apparatus operates the operation mode in the power saving mode when a detection unit (detection unit 320) for detecting an object that blocks light in a specific area set on the projection plane and a predetermined condition is satisfied.
  • a mode control unit mode control unit 340.
  • the mode control unit in the power saving mode, shifts the operation mode to the normal power mode in response to the detection of an object that blocks light in the specific area.
  • the projection display apparatus further includes a light source control unit (light source control unit 350) that controls the light source.
  • the light source control unit reduces the power to be supplied to the light source in the power saving mode as compared to the normal power mode.
  • the projection display apparatus further includes a light source control unit (light source control unit 350) that controls the light source.
  • the light source control unit reduces a light emission period of the light source in one frame in the power saving mode as compared to the normal power mode.
  • the projection display apparatus further includes an element control unit (element control unit 360) that controls the light modulation element.
  • the light modulation element is a reflective element in which a plurality of micro mirrors are driven by application of a voltage.
  • the element control unit applies a voltage to another micro mirror without applying a voltage to at least one of the plurality of micro mirrors in the power saving mode.
  • the mode control unit shifts an operation mode to the normal power mode according to an operation of an operation unit provided in the apparatus main body.
  • the projection type image display apparatus comprises a light source control unit (light source control unit 350) for controlling the light source, and an external light detection unit (detecting a light amount of external light other than the light emitted from the light source). And an ambient light detector 370).
  • the light source control unit controls the power to be supplied to the light source based on the light amount of the external light detected by the external light detection unit.
  • the projection type image display apparatus comprises a light source control unit (light source control unit 350) for controlling the light source, and an external light detection unit (detecting a light amount of external light other than the light emitted from the light source). And an ambient light detector 370). At least one of the element control unit and the light source control unit enhances the saturation or luminance of the image projected on the projection plane based on the light amount of the external light detected by the external light detection unit.
  • the projection display apparatus further includes a light source control unit (light source control unit 350) that controls the light source, and a reflected light detection unit that detects light reflected by the projection surface. At least one of the element control unit and the light source control unit optimizes the color or the amount of light of the image projected on the projection plane based on the light detected by the reflected light detection unit.
  • a light source control unit (light source control unit 350) that controls the light source
  • a reflected light detection unit that detects light reflected by the projection surface. At least one of the element control unit and the light source control unit optimizes the color or the amount of light of the image projected on the projection plane based on the light detected by the reflected light detection unit.
  • the projection display apparatus further includes a light source control unit (light source control unit 350) that controls the light source, and a size detection unit that detects the size of the image projected on the projection plane.
  • the light source control unit controls the power to be supplied to the light source based on the size of the image detected by the size detection unit.
  • FIG. 1 is a view showing a schematic configuration of a projection display apparatus 100 according to the first embodiment.
  • FIG. 2 is a diagram showing a schematic configuration of the projection display apparatus 100 according to the first embodiment.
  • FIG. 3 is a diagram for explaining an optical configuration of the projection display apparatus 100 according to the first embodiment.
  • FIG. 4 is a view for explaining a slide of the first housing 200A according to the first embodiment.
  • FIG. 5 is a view for explaining the slide of the first housing 200A according to the first embodiment.
  • FIG. 6 is a block diagram showing a control unit 300 according to the first embodiment.
  • FIG. 7 is a diagram for explaining an execution example of the processing content according to the first embodiment.
  • FIG. 8 is a diagram for explaining an execution example of the processing content according to the first embodiment.
  • FIG. 1 is a view showing a schematic configuration of a projection display apparatus 100 according to the first embodiment.
  • FIG. 2 is a diagram showing a schematic configuration of the projection display apparatus 100 according to the first embodiment.
  • FIG. 9 is a diagram for explaining an example of releasing the power saving mode according to the first embodiment.
  • FIG. 10 is a diagram for explaining an example of releasing the power saving mode according to the first embodiment.
  • FIG. 11 is a flow chart showing the operation of the projection display apparatus 100 according to the first embodiment.
  • FIG. 12 is a block diagram showing a control unit 300 according to the first modification.
  • FIG. 13 is a view showing an example of a display pattern according to the first modification.
  • FIG. 14 is a view showing an example of a display pattern according to the first modification.
  • FIG. 15 is a view showing an example of a display pattern according to the first modification.
  • FIG. 16 is a diagram for explaining the saturation emphasizing method according to the second modification.
  • FIG. 17 is a diagram for explaining the luminance emphasizing method according to the second modification.
  • FIG. 18 is a diagram illustrating an example of luminance enhancement according to the second modification.
  • FIG. 19 is a diagram illustrating an example of luminance enhancement according to the second modification.
  • FIG. 20 is a diagram illustrating an example of luminance enhancement according to the second modification.
  • FIG. 21 is a diagram illustrating an example of a display pattern according to the third modification.
  • FIG. 22 is a view showing an example of a display pattern according to the third modification.
  • the projection-type image display apparatus includes a light modulation element that modulates light emitted from a light source, and a projection optical system that projects light emitted from the light modulation element on a projection surface.
  • the projection type video display apparatus includes a detection unit that detects an object that blocks light in a specific area set on the projection surface, and a mode control unit that shifts the operation mode to the power saving mode when a predetermined condition is satisfied. And In the power saving mode, the mode control unit shifts the operation mode to the normal power mode in response to the detection of an object that blocks light in the specific region.
  • the mode control unit cancels the power saving mode and shifts the operation mode to the normal power mode.
  • FIG. 1 is a view showing a projection display apparatus 100 (floor surface projection) according to the first embodiment.
  • FIG. 2 is a view showing the projection display apparatus 100 (wall surface projection) according to the first embodiment.
  • the projection display apparatus 100 has a housing 200, and projects an image on a projection plane (not shown).
  • the housing 200 is provided with a transmission area 210 for transmitting light emitted from a projection optical system 110 described later.
  • the projection plane may be provided on a horizontal surface such as a floor surface or desk top, and as shown in FIG. 2, provided on a vertical surface such as a wall surface (for example, a screen) It is also good. That is, the projection display apparatus 100 may be disposed to project the image light on a horizontal surface such as a floor surface or a desk, or may be disposed to project the image light on a vertical surface such as a wall surface.
  • the size of the projection display apparatus 100 is about the size of a plastic bottle having a volume of 200 ml to 2 l.
  • the volume of the projection display 100 is about 900 ml, and the weight of the projection display 100 is about 800 g.
  • the size of the image displayed by the projection display apparatus 100 is, for example, about 20 inches.
  • the distance between the projection display 100 and the projection plane is very short.
  • FIG. 3 is a diagram mainly showing the optical configuration of the projection display apparatus 100 according to the first embodiment.
  • the projection type image display apparatus 100 includes a projection optical system 110, an illumination optical system 120, a cooling fan 130, a battery 140, a power supply substrate 150, a main control substrate 160, and an operation substrate 170. And.
  • the projection display apparatus 100 further includes a DMD 70 and a reflecting prism 80.
  • the case 200 is configured of a first case 200A and a second case 200B.
  • the transmissive region 210 described above is provided in the first housing 200A. Note that, as will be described later, a part or all of the first housing 200A is configured to be accommodated in the second housing 200B.
  • the projection optical system 110 projects color component light (image light) emitted from the DMD 70 onto a projection surface.
  • the projection optical system 110 has a projection lens group 111 and a reflection mirror 112.
  • the projection lens group 111 emits color component light (image light) emitted from the DMD 70 to the reflection mirror 112 side.
  • the projection lens group 111 has a substantially circular shape with the optical axis L of the projection optical system 110 as its center, and a shape (for example, the lower part of the circular shape with the optical axis L of the projection optical system 110 as its center) Half-circle shaped lens etc.
  • the diameter of the lens included in the projection lens group 111 is larger as it is closer to the reflection mirror 112.
  • the reflection mirror 112 reflects color component light (image light) emitted from the projection lens group 111.
  • the reflection mirror 112 condenses the video light and then widens the video light.
  • the reflection mirror 112 is an aspheric mirror having a concave surface on the projection lens group 111 side.
  • the reflection mirror 112 has a shape (for example, a semicircular shape in the lower half) configured by a part of a substantially circular shape centering on the optical axis L of the projection optical system 110.
  • the image light condensed by the reflection mirror 112 is transmitted through the transmission region 210 provided in the housing 200.
  • the transmission area 210 provided in the housing 200 is preferably provided in the vicinity of the position where the image light is collected by the reflection mirror 112.
  • the illumination optical system 120 includes a light source 10, a dichroic prism 30, a rod integrator 40, a mirror 51, a mirror 52, a lens 61, a lens 62, and a lens 63.
  • the light source 10 is configured to individually emit color component light of a plurality of colors. Further, the light source 10 may be provided with a heat sink for radiating heat generated by the light source 10.
  • the light source 10 includes, for example, the light source 10R, the light source 10G, and the light source 10B.
  • the light source 10R is a light source that emits red component light R, and is, for example, a red LED (Light Emitting Diode) or a red LD (Laser Diode).
  • the light source 10 ⁇ / b> R may be provided with a heat sink made of a member having good heat dissipation such as metal.
  • the light source 10G is a light source that emits green component light G, and is, for example, a green LED or a green LD.
  • the light source 10 ⁇ / b> G may be provided with a heat sink made of a member having a good heat dissipation property such as metal.
  • the light source 10B is a light source that emits blue component light B, and is, for example, a blue LED or a blue LD.
  • the light source 10 ⁇ / b> B may be provided with a heat sink made of a member having a good heat dissipation property such as metal.
  • the dichroic prism 30 combines the red component light R emitted from the light source 10R, the green component light G emitted from the light source 10G, and the blue component light B emitted from the light source 10B.
  • the rod integrator 40 has a light incident surface, a light output surface, and a light reflection side surface provided from the outer periphery of the light incident surface to the outer periphery of the light output surface.
  • the rod integrator 40 makes the color component light emitted from the dichroic prism 30 uniform. Specifically, the rod integrator 40 makes color component light uniform by reflecting the color component light on the light reflection side.
  • the rod integrator 40 may be a solid rod made of glass or the like, or a hollow rod whose inner surface is made up of mirror surfaces.
  • the rod integrator 40 has a tapered shape in which the cross section perpendicular to the traveling direction of the light increases in the traveling direction of the light emitted from the light source 10.
  • the rod integrator 40 may have an inverse taper shape in which the cross section perpendicular to the traveling direction of the light decreases in the traveling direction of the light emitted from the light source 10.
  • the mirror 51 and the mirror 52 are reflection mirrors that bend the optical path of light in order to guide the light emitted from the rod integrator 40 to the DMD 70.
  • the lenses 61, 62 and 63 are relay lenses that substantially form color component light on the DMD 70 while suppressing expansion of the color component light emitted from the light source 10.
  • the cooling fan 130 is in communication with the outside of the housing 200 and configured to release the heat in the housing 200. Alternatively, the cooling fan 130 is configured to feed the air outside the housing 200 into the housing 200. For example, the cooling fan 130 is provided near the light source 10 and configured to cool the light source 10.
  • the battery 140 stores the power to be supplied to the projection display 100.
  • the power supply substrate 150 is connected to the battery 140 and has a power conversion circuit that converts AC power into DC power.
  • the main control board 160 has a main control circuit (a control unit 300 described later) that controls the operation of the projection display apparatus 100.
  • the operation board 170 is connected to an operation unit (button or the like) provided in the projection display apparatus 100, and transmits an operation signal input from the operation unit to the main control board 160 (main control circuit).
  • the DMD 70 is configured by a plurality of micro mirrors, and the plurality of micro mirrors are movable. Each micro mirror basically corresponds to one pixel. The DMD 70 switches whether or not to reflect color component light so that the color component light is guided to the projection optical system 110 side as effective light by changing the angle of each micro mirror.
  • the reflection prism 80 transmits the light emitted from the illumination optical system 120 to the DMD 70 side.
  • the reflection prism 80 reflects the light emitted from the DMD 70 to the projection optical system 110 side.
  • the first housing 200A is configured to be slidable along the inner wall of the second housing 200B.
  • the reflection mirror 112 rotates around the rotation axis P in conjunction with the slide of the first housing 200A.
  • FIG. 6 is a block diagram showing a control unit 300 according to the first embodiment.
  • the control unit 300 is provided in the projection display apparatus 100 and controls the projection display apparatus 100.
  • control unit 300 includes a storage unit 310, a detection unit 320, an instruction unit 330, a mode control unit 340, a light source control unit 350, and an element control unit 360.
  • the storage unit 310 stores information that associates the specific area provided on the projection plane with the processing content for the projection display apparatus 100.
  • the specific area may be provided in the projection area where the light emitted from the projection type video display 100 (projection optical system 110) is projected, or may be provided outside the projection area.
  • the specific area is four sides of the projection area.
  • the specific area is four corners of the projection area.
  • the specific area is preferably a boundary area between the inside of the projection area and the outside of the projection area (for example, 4 sides of the projection area, 4 corners of the projection area). It should be noted that in such a boundary area, the change in luminance is large, so that an object that blocks light in a specific area can be easily detected.
  • the processing content is processing to be executed by the projection display apparatus 100.
  • the processing content includes switching the power ON / OFF of the projection type video display device 100, rotating the video projected on the projection area, switching playback / stop of the video projected on the projection area, the projection video display device 100 Switching of the mode provided in the
  • the processing contents include, for example, page turning of the image projected in the projection area, page return of the image projected in the projection area, and changing settings (brightness adjustment and contrast adjustment) of the projection display apparatus 100. Such as menu call.
  • the detection unit 320 detects an object (for example, a user's hand or the like) that blocks light in a specific area. Specifically, in the first embodiment, the detection unit 320 preferably detects an object that blocks light emitted from the projection display 100 (projection optical system 110) in a specific area. That is, the specific area is preferably provided in the projection area.
  • the detection unit 320 is, for example, an imaging element configured to be able to detect a change in brightness in a specific area.
  • the detection unit 320 may be, for example, an illuminance sensor configured to be able to detect the conversion of brightness in a specific area.
  • the illuminance sensor preferably has directivity which covers only a specific area.
  • the instruction unit 330 instructs the execution of the processing content associated with the specific region when the detection time of the object shielding the light in the specific region is equal to or longer than a predetermined period. Specifically, with regard to processing contents whose processing is completed in the projection display apparatus 100, the instruction unit 330 identifies the functional block (for example, power supply block etc.) provided in the projection display apparatus 100. It instructs execution of the processing content associated with the area. Alternatively, with regard to processing content whose processing is not completed in the projection display apparatus 100, processing that is associated with a specific area with another apparatus (for example, a personal computer connected to the projection display apparatus 100). Direct the execution of the content.
  • the functional block for example, power supply block etc.
  • the mode control unit 340 controls the operation mode of the projection display apparatus 100.
  • the operation mode is a normal power mode, a power saving mode, or a standby mode.
  • the normal power mode is a mode in which the light source 10 and the DMD 70 are controlled by normal power.
  • the power saving mode is a mode in which at least one of the light source 10 and the DMD 70 is controlled by less power than the normal power mode.
  • the standby mode is a mode in which the light source 10 and the DMD 70 are controlled by power less than the power saving mode.
  • the mode control unit 340 shifts the operation mode to the normal power mode when the video input signal is input when the power is turned on.
  • the mode control unit 340 cancels the power saving mode and shifts the operation mode to the normal power mode.
  • the mode control unit 340 cancels the standby mode and shifts the operation mode to the normal power mode.
  • the user operation may be an operation of blocking light in a specific area set on the projection plane, or may be an operation of an operation unit (button or the like) provided in the housing 200.
  • the mode control unit 340 shifts the operation mode to the power saving mode when the predetermined condition is satisfied in the normal power mode.
  • the predetermined condition is (1) that no user operation is detected within a predetermined period, and (2) that an image projected onto the projection area does not change within a predetermined period (for example, page turning or page returning is a predetermined period Not be done).
  • the mode control unit 340 may turn off the power when the user operation is not detected within a certain period.
  • the mode control unit 340 shifts the operation mode to the standby mode when the video input signal is not input when the power is turned on. In the standby mode, the mode control unit 340 may turn off the power when no video input signal is input within a predetermined period.
  • the light source control unit 350 controls the light source 10. Specifically, the light source control unit 350 reduces the power to be supplied to the light source 10 in the power saving mode as compared to the normal power mode.
  • the light source control unit 350 may equally reduce the power to be supplied to the light source 10R, the light source 10G, and the light source 10B in the power saving mode.
  • the light source control unit 350 may preferentially reduce the power to be supplied to the light source 10 with high power consumption.
  • the light source control unit 350 may preferentially reduce the power to be supplied to the light source 10 in the order of the light source 10G, the light source 10B, and the light source 10R.
  • the light source control unit 350 may reduce the light emission period of the light source 10 in one frame as compared to the normal power mode.
  • the light source control unit 350 turns off the light source 10 in the black display frame.
  • the light source control unit 350 When the light source 10 is not a solid light source but the light source 10 is a white light source (UHP lamp or xenon lamp), it is difficult for the light source control unit 350 to control the light emission period of the light source 10 in frame units. In the power saving mode, the power to be supplied to the light source 10 is reduced.
  • the light source control unit 350 may mainly turn on only the light source 10B in order to display a standby image (blue back) in the standby mode. Alternatively, the light source control unit 350 may stop the control of the light source 10 in the standby mode. That is, the light source control unit 350 may not supply power to the light source 10 in the standby mode.
  • the element control unit 360 controls the DMD 70. Specifically, the element control unit 360 applies a voltage to another micro mirror without applying a voltage to at least one of the plurality of micro mirrors.
  • the DMD 70 is configured by a plurality of micro mirrors.
  • the plurality of micromirrors are configured to switch whether light reflected by the micromirrors reaches the projection surface according to the application of the voltage. That is, even when the light reflected by the micromirror reaches the projection plane, the voltage is applied to the micromirror even when the light reflected by the micromirror does not reach the projection plane.
  • the element control unit 360 does not apply a voltage to the micro mirror in the power saving mode, thereby achieving power saving. It should be noted that the light reflected by the micromirror to which no voltage is applied is not controlled whether it reaches the projection surface and does not constitute a pixel on the projection surface.
  • the element control unit 360 selects a minute mirror (a minute mirror corresponding to an OFF pixel) that reflects light not reaching the projection surface among a plurality of minute mirrors as a minute mirror to which no voltage is applied. Good.
  • the element control unit 360 is configured to apply 12 V to the micro mirror corresponding to the ON pixel and to apply -12 V to the micro mirror corresponding to the OFF pixel. In such a case, the element control unit 360 applies 12 V only to the minute mirror corresponding to the ON pixel without applying a voltage to the minute mirror corresponding to the OFF pixel. Although this lowers the contrast, it is possible to save power.
  • the element control unit 360 may select a micro mirror to which a voltage is not applied among the plurality of micro mirrors in a checkered pattern.
  • the element control unit 360 may control the DMD 70 to display a standby video (blue back) in the standby mode. Alternatively, the element control unit 360 may stop control of the DMD 70 in the standby mode. That is, the element control unit 360 may not supply power to the DMD 70 in the standby mode.
  • FIG. 7 and FIG. 8 are diagrams for explaining an execution example of the processing content according to the first embodiment.
  • FIG. 11 is a flowchart showing the operation of the projection display apparatus 100 (control unit 300) according to the first embodiment.
  • step 10 the projection display apparatus 100 detects that the power is turned on.
  • step 11 the projection display apparatus 100 determines whether a video input signal is input. When the video input signal is input, the projection display apparatus 100 proceeds to the process of step 14. On the other hand, when the video input signal is not input, the projection display apparatus 100 proceeds to the process of step 12.
  • step 12 the projection display apparatus 100 shifts the operation mode to the standby mode.
  • step S13 the projection display apparatus 100 determines whether the video input signal is input within a predetermined period. When a video input signal is input within a predetermined period, the projection display apparatus 100 proceeds to the process of step 14. On the other hand, when the video input signal is not input within a predetermined period, the projection display apparatus 100 proceeds to the process of step 18.
  • step 14 the projection display apparatus 100 shifts the operation mode to the normal power mode.
  • step 15 the projection display apparatus 100 determines whether a predetermined condition is satisfied. If the predetermined condition is satisfied, the projection display apparatus 100 proceeds to the process of step 16. If the predetermined condition is not satisfied, the projection display apparatus 100 returns to the process of step 14. That is, the normal power mode is maintained.
  • step 16 the projection display apparatus 100 shifts the operation mode to the power saving mode.
  • step S17 the projection display apparatus 100 determines whether a user operation has been detected within a predetermined period. When a user operation is detected within a predetermined period, the projection display apparatus 100 returns to the process of step 14. That is, the power saving mode is released. On the other hand, when the user operation is not detected within a certain period, the projection display apparatus 100 proceeds to the process of step 18.
  • step 18 the projection display apparatus 100 turns off the power.
  • the mode control unit 340 cancels the power saving mode and shifts the operation mode to the normal power mode. Do.
  • the projection display apparatus 100 controls the power to be supplied to the light source 10 based on the amount of external light other than the light emitted from the light source 10.
  • FIG. 12 is a block diagram showing a control unit 300 according to the first modification. It should be noted that, in FIG. 12, the same components as in FIG. 6 are denoted by the same reference numerals.
  • control unit 300 has an external light detection unit 370 in addition to the configuration shown in FIG.
  • the external light detection unit 370 detects the amount of external light other than the light emitted from the light source 10. For example, the outside light detection unit 370 detects the amount of outside light based on the contrast. That is, the contrast decreases when the amount of external light is large, and the contrast increases when the amount of external light is small. Therefore, the external light detection unit 370 can detect the light amount of the external light based on the contrast.
  • the external light detection unit 370 includes, for example, an imaging element configured to be able to detect a change in brightness in the projection area.
  • the external light detection unit 370 includes, for example, an illuminance sensor configured to be able to detect the conversion of the brightness in the projection area.
  • the light source control unit 350 and the element control unit 360 display an all white frame and an all black frame.
  • the light source 10 and the DMD 70 are controlled as described above.
  • the external light detection unit 370 detects the contrast based on the difference between the brightness of the all white frame and the brightness of the all black frame. That is, the outside light detection unit 370 detects the light amount of the outside light by the contrast.
  • the light source control unit 350 and the element control unit 360 display a frame having a black area and a white area.
  • the light source 10 and the DMD 70 are controlled.
  • the external light detection unit 370 detects the contrast based on the brightness of the black area and the brightness of the white area. That is, the outside light detection unit 370 detects the light amount of the outside light by the contrast.
  • the external light detection unit 370 has an imaging element, as shown in FIG. 15, the light source control unit 350 and the element control unit 360 have a black area and a white area in a checkered pattern.
  • the light source 10 and the DMD 70 are controlled so that the placed frame is displayed.
  • the external light detection unit 370 detects the contrast based on the brightness of the black area and the brightness of the white area. That is, the outside light detection unit 370 detects the light amount of the outside light by the contrast.
  • the light source control unit 350 described above controls the power to be supplied to the light source 10 based on the light amount of the external light detected by the external light detection unit 370. For example, the light source control unit 350 increases the power to be supplied to the light source 10 when the amount of external light is large. On the other hand, the light source control unit 350 reduces the power to be supplied to the light source 10 when the amount of external light is small.
  • the light source control unit 350 controls the maximum light amount of the light source 10 applied to the normal power mode based on the light amount of the external light detected by the external light detection unit 370. For example, the light source control unit 350 increases the maximum light amount of the light source 10 applied to the normal power mode when the light amount of the external light is large. On the other hand, the light source control unit 350 reduces the maximum light amount of the light source 10 applied to the normal power mode when the light amount of the external light is small.
  • the light source control unit 350 controls the power to be supplied to the light source 10 based on the light amount of the external light detected by the external light detection unit 370. Therefore, the light source 10 can be controlled with appropriate power according to the brightness around the projection display apparatus 100. As a result, power saving can be achieved as needed.
  • the projection display apparatus 100 is configured to supply the power (that is, the overall brightness) to the light source 10 based on the amount of external light other than the light emitted from the light source 10. Control.
  • the projection display apparatus 100 emphasizes the saturation or luminance of the image projected on the projection plane based on the light quantity of the outside light other than the light emitted from the light source 10 .
  • the projection type image display apparatus 100 increases the amount of enhancement of saturation or luminance as the amount of external light is larger.
  • the projection display apparatus 100 reduces the amount of enhancement of saturation or luminance as the amount of external light decreases.
  • the projection display apparatus 100 emphasizes saturation.
  • the horizontal axis is saturation (input)
  • the vertical axis is saturation (output).
  • the dotted line indicates the input / output relationship before emphasis
  • the solid line indicates the input / output relationship after emphasis.
  • the projection display apparatus 100 emphasizes the saturation so that the saturation (output) increases over the entire saturation (input). In particular, it should be noted that the projection display 100 emphasizes saturation more than high saturation (input) at low saturation (input) and medium saturation (input).
  • the amount of saturation enhancement is determined according to the amount of external light, as described above.
  • the projection display apparatus 100 emphasizes the luminance.
  • the horizontal axis is luminance (input)
  • the vertical axis is luminance (output).
  • the dotted line indicates the input / output relationship before emphasis
  • the solid line indicates the input / output relationship after emphasis.
  • the projection display apparatus 100 emphasizes the luminance such that the difference in luminance (output) between low luminance (input) and high luminance (input) becomes large.
  • the projection display apparatus 100 sets each of the plurality of peaks included in the distribution of luminance (input) to high luminance. Shift to the side or low luminance side, and adjust the luminance so that the luminance (output) is bipolarized.
  • the projection display apparatus 100 when the distribution of luminance (input) is biased to middle luminance, the projection display apparatus 100 generally has a higher luminance (output) than the luminance (input).
  • the projection display apparatus 100 polarizes the luminance (output) at low luminance and high luminance. To adjust the brightness.
  • the emphasis amount of the luminance is determined according to the light amount of the outside light.
  • the detection unit that detects the light amount of the external light can detect the light amount of the external light for each color
  • the projection display apparatus 100 may perform the enhancement of the luminance for each color.
  • enhancement of saturation or enhancement of luminance may be realized by signal processing by the element control unit 360 or may be performed by light source control by the light source control unit 350.
  • the projection display apparatus 100 emphasizes the saturation or the luminance in accordance with the light amount of the external light. As a result, it is possible to suppress a drop in image visibility (such as whitening) caused by external light.
  • the first modification it is possible to suppress the loss of the image visibility even if the maximum light amount of the light source 10 is reduced in the situation where the light amount of the external light is large (bright state). In other words, power saving can be achieved while maintaining a certain degree of image visibility.
  • the projection display apparatus 100 is configured to supply the power (that is, the overall brightness) to the light source 10 based on the amount of external light other than the light emitted from the light source 10. Control.
  • the projection display apparatus 100 adjusts the color or the amount of light based on the light reflected by the projection surface (so-called "wall color correction").
  • the projection display apparatus 100 includes a reflected light detection unit that detects light reflected by the projection surface.
  • the reflected light detection unit is, for example, an imaging element that captures an image of a projection plane. Further, the reflected light detection unit is preferably provided on the upper end of the housing 200.
  • the projection display apparatus 100 projects a test pattern image on a projection surface to detect light reflected on the projection surface. It should be noted that the light reflected by the projection surface is affected by the color of the projection surface and the ambient light.
  • the projection display apparatus 100 optimizes the color or the amount of light of the image projected on the projection surface, based on the light reflected by the projection surface.
  • the method of optimization can use a known method, and thus the description thereof is omitted.
  • the projection display apparatus 100 displays a plurality of regions (region # 1-1 to region # 1-4). Images having different luminances for each of the regions # 2-1 to # 2-4 are displayed as test pattern images.
  • an image is displayed in which the luminance of the image of each area increases toward the area # 1-1 to the area # 1-4.
  • an image is displayed in which the luminance of the image of each area increases toward the area # 2-1 to the area # 2-4. Note that the luminance of the image of the area # 2-1 is higher than the luminance of the image of the area 1-4.
  • the projection display apparatus 100 displays a plurality of areas (area # 1-1 to area # 1-8). Images having different luminances are displayed as test pattern images for each of the regions # 2-1 to # 2-8 and the regions # 3-1 to # 3-8).
  • blue-line images are displayed in the area # 1-1 to the area # 1-8.
  • an image is displayed in which the blue luminance of each area decreases toward the area # 1-1 to the area # 1-8.
  • an image of a green system is displayed in which the green luminance of each area increases toward the area # 2-1 to the area # 2-8.
  • an image of a red system is displayed in the area # 3-1 to the area # 3-8.
  • the order in which the brightness increases in the rows of area # 1 (for example, blue system) and area # 3 (for example, red system) is the order in which the brightness increases in the row of area # 2 (for example, green system) It is preferable that it is opposite to. That is, in the region where the angle of view is large (for example, region # 1-1, region # 2-8, region # 3-1), the region where the luminance is large is included. As a result, the regions having high luminance are alternately arranged, so that the light reflected by the projection surface can be appropriately detected.
  • optimization of color tone or optimization of light quantity may be realized by signal processing by the element control unit 360 or may be performed by light source control by the light source control unit 350.
  • the projection display apparatus 100 optimizes the color or the amount of light of the image projected on the projection surface based on the light reflected by the projection surface. As a result, it is possible to suppress a decrease in the image visibility caused by the color of the projection surface and the external light (unbalanced color, whitening, etc.).
  • the maximum light amount of the light source 10 is reduced while suppressing loss of image visibility. Can be reduced.
  • the first modification it is possible to suppress the loss of the image visibility even if the maximum light amount of the light source 10 is reduced in the situation where the light amount of the external light is large (bright state). In other words, power saving can be achieved while maintaining a certain degree of image visibility.
  • the projection display apparatus 100 includes a size detection unit that detects the size of an image to be projected on the projection plane (hereinafter referred to as a projection size).
  • the size detection unit is, for example, an imaging element that captures an image of a projection plane.
  • the size detection unit is preferably provided at the upper end of the housing 200.
  • the projection display apparatus 100 controls the power to be supplied to the light source 10 based on the projection size. Specifically, the projection display apparatus 100 increases the power to be supplied to the light source 10 when the projection size is large. On the other hand, the projection display apparatus 100 reduces the power to be supplied to the light source 10 when the projection size is small.
  • the projection display apparatus 100 controls the maximum amount of light of the light source 10 applied to the normal power mode based on the projection size. For example, when the projection size is large, the projection display apparatus 100 increases the maximum light quantity of the light source 10 applied to the normal power mode. On the other hand, when the projection size is small, the projection display apparatus 100 reduces the maximum light quantity of the light source 10 applied to the normal power mode.
  • the maximum light quantity of the light source 10 is performed by the light source controller 350 as in the first modification.
  • the projection display apparatus 100 controls the power to be supplied to the light source 10 based on the projection size. Therefore, the light source 10 can be controlled with appropriate power according to the amount of light necessary for the projection size. As a result, power saving can be achieved as needed.
  • the light modulation device may be a reflective liquid crystal panel.
  • a plurality of types of processing contents are illustrated only for executable cases. Specifically, only one type of processing content may be executable.
  • the specific area and the processing content are associated with each other, and the case where the interactive operation is realized is illustrated.
  • the embodiments are not limited to this. That is, the specific area may be used only for canceling the power saving mode. In such a case, the specific area may be the entire area of the projection area, or may be an area larger than the projection area.
  • the detection unit 320 and the external light detection unit 370 have different configurations.
  • the embodiments are not limited to this.
  • the detection unit 320 may be used as an imaging element or an illumination sensor provided in the external light detection unit 370.
  • the detection unit 320 is an imaging device or an illumination sensor.
  • the embodiments are not limited to this.
  • the detection unit 320 may be an infrared sensor.

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Abstract

Provided is a projection image display device which enables easy cancellation of a power-saving mode. A projection image display device (100) is provided with a detection unit (320) for detecting an object that blocks light in a specific region, and a mode control unit (340) for shifting the operation mode to a power-saving mode when a predetermined condition is satisfied. The mode control unit (340) shifts the operation mode to a normal power mode in response to the detection of the object that blocks the light in the specific region in the power-saving mode.

Description

投写型映像表示装置Projection type video display
　本発明は、光源から出射される光を変調する光変調素子と、光変調素子から出射される光を投写面上に投写する投写光学系とを備える投写型映像表示装置に関する。 The present invention relates to a projection type video display apparatus including a light modulation element that modulates light emitted from a light source, and a projection optical system that projects light emitted from the light modulation element on a projection surface.
　従来、光源から出射される光を変調する光変調素子と、光変調素子から出射される光を投写面上に投写する投写光学系とを備える投写型映像表示装置が知られている。 2. Description of the Related Art Conventionally, there has been known a projection type video display apparatus including a light modulation element for modulating light emitted from a light source and a projection optical system for projecting light emitted from the light modulation element onto a projection surface.
　ところで、携帯電話などのように、ディスプレイを有する機器において、省電力化を図る技術が提案されている（例えば、特許文献１）。具体的には、携帯電話などの機器は、省電力モードを有しており、省電力モードにおいて、ディスプレイの階調や駆動電圧を減少することによって、省電力化が図られる。 By the way, in an apparatus having a display, such as a mobile phone, a technology for saving power has been proposed (for example, Patent Document 1). Specifically, a device such as a mobile phone has a power saving mode, and power saving can be achieved by reducing the gray scale of the display and the driving voltage in the power saving mode.
特開２００１－３４５９２８号公報JP 2001-345928 A
　上述したような携帯電話などの機器では、省電力モードは、機器本体に設けられる操作部（ボタンなど）の操作によって解除される。 In a device such as a mobile phone as described above, the power saving mode is canceled by the operation of an operation unit (button or the like) provided on the device body.
　しかしながら、投写型映像表示装置では、携帯電話などの機器と比べて、装置本体に設けられる操作部（ボタンなど）が操作される機会が少ない。従って、普段は操作されない操作部（ボタンなど）によって、省電力モードを解除する操作は、ユーザにとって分かりにくかった。 However, in the projection type image display apparatus, there are few opportunities for operating the operation unit (button or the like) provided in the apparatus main body, as compared with an apparatus such as a mobile phone. Therefore, the operation of canceling the power saving mode by the operation unit (button or the like) which is not usually operated is difficult for the user to understand.
　そこで、本発明は、上述した課題を解決するためになされたものであり、省電力モードを簡易に解除することを可能とする投写型映像表示装置を提供することを目的とする。 Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a projection type video display device capable of easily canceling the power saving mode.
　第１の特徴に係る投写型映像表示装置は、光源（光源１０）から出射される光を変調する光変調素子（DMD７０）と、前記光変調素子から出射される光を投写面上に投写する投写光学系（投写光学系１１０）とを備える。投写型映像表示装置は、前記投写面上に設定された特定領域において光を遮光する物体を検出する検出部（検出部３２０）と、所定条件が満たされた場合に、動作モードを省電力モードに移行するモード制御部（モード制御部３４０）とを備える。前記モード制御部は、前記省電力モードにおいて、前記特定領域において光を遮光する物体の検出に応じて、動作モードを通常電力モードに移行する。 The projection type image display apparatus according to the first aspect comprises a light modulation element (DMD 70) for modulating light emitted from a light source (light source 10), and projecting light emitted from the light modulation element on a projection surface And a projection optical system (projection optical system 110). The projection type video display apparatus operates the operation mode in the power saving mode when a detection unit (detection unit 320) for detecting an object that blocks light in a specific area set on the projection plane and a predetermined condition is satisfied. And a mode control unit (mode control unit 340). The mode control unit, in the power saving mode, shifts the operation mode to the normal power mode in response to the detection of an object that blocks light in the specific area.
　第１の特徴において、投写型映像表示装置は、前記光源を制御する光源制御部（光源制御部３５０）をさらに備える。前記光源制御部は、前記省電力モードにおいて、前記通常電力モードと比べて、前記光源に供給すべき電力を減少する。 In the first aspect, the projection display apparatus further includes a light source control unit (light source control unit 350) that controls the light source. The light source control unit reduces the power to be supplied to the light source in the power saving mode as compared to the normal power mode.
　第１の特徴において、投写型映像表示装置は、前記光源を制御する光源制御部（光源制御部３５０）をさらに備える。前記光源制御部は、前記省電力モードにおいて、前記通常電力モードと比べて、１フレーム内において前記光源が発光する期間を減少する。 In the first aspect, the projection display apparatus further includes a light source control unit (light source control unit 350) that controls the light source. The light source control unit reduces a light emission period of the light source in one frame in the power saving mode as compared to the normal power mode.
　第１の特徴において、投写型映像表示装置は、前記光変調素子を制御する素子制御部（素子制御部３６０）をさらに備える。前記光変調素子は、複数の微小ミラーが電圧の印加によって駆動する反射型素子である。前記素子制御部は、前記省電力モードにおいて、前記複数の微小ミラーのうち、少なくとも１つの微小ミラーに電圧を印加せずに、他の微小ミラーに電圧を印加する。 In the first feature, the projection display apparatus further includes an element control unit (element control unit 360) that controls the light modulation element. The light modulation element is a reflective element in which a plurality of micro mirrors are driven by application of a voltage. The element control unit applies a voltage to another micro mirror without applying a voltage to at least one of the plurality of micro mirrors in the power saving mode.
　第１の特徴において、前記モード制御部は、前記省電力モードにおいて、装置本体に設けられる操作部の操作に応じて、動作モードを前記通常電力モードに移行する。 In the first feature, in the power saving mode, the mode control unit shifts an operation mode to the normal power mode according to an operation of an operation unit provided in the apparatus main body.
　第１の特徴において、投写型映像表示装置は、前記光源を制御する光源制御部（光源制御部３５０）と、前記光源から出射される光以外の外光の光量を検出する外光検出部（外光検出部３７０）とをさらに備える。前記光源制御部は、前記外光検出部によって検出された外光の光量に基づいて、前記光源に供給すべき電力を制御する。 In the first feature, the projection type image display apparatus comprises a light source control unit (light source control unit 350) for controlling the light source, and an external light detection unit (detecting a light amount of external light other than the light emitted from the light source). And an ambient light detector 370). The light source control unit controls the power to be supplied to the light source based on the light amount of the external light detected by the external light detection unit.
　第１の特徴において、投写型映像表示装置は、前記光源を制御する光源制御部（光源制御部３５０）と、前記光源から出射される光以外の外光の光量を検出する外光検出部（外光検出部３７０）とをさらに備える。前記素子制御部及び前記光源制御部の少なくとも一方は、前記外光検出部によって検出された外光の光量に基づいて、前記投写面に投写される映像の彩度又は輝度を強調する。 In the first feature, the projection type image display apparatus comprises a light source control unit (light source control unit 350) for controlling the light source, and an external light detection unit (detecting a light amount of external light other than the light emitted from the light source). And an ambient light detector 370). At least one of the element control unit and the light source control unit enhances the saturation or luminance of the image projected on the projection plane based on the light amount of the external light detected by the external light detection unit.
　第１の特徴において、投写型映像表示装置は、前記光源を制御する光源制御部（光源制御部３５０）と、前記投写面で反射される光を検出する反射光検出部とをさらに備える。前記素子制御部及び前記光源制御部の少なくとも一方は、前記反射光検出部によって検出された光に基づいて、前記投写面に投写される映像の色味又は光量を最適化する。 In the first feature, the projection display apparatus further includes a light source control unit (light source control unit 350) that controls the light source, and a reflected light detection unit that detects light reflected by the projection surface. At least one of the element control unit and the light source control unit optimizes the color or the amount of light of the image projected on the projection plane based on the light detected by the reflected light detection unit.
　第１の特徴において、投写型映像表示装置は、前記光源を制御する光源制御部（光源制御部３５０）と、前記投写面に投写される映像のサイズを検出するサイズ検出部とをさらに備える。前記光源制御部は、前記サイズ検出部によって検出された映像のサイズに基づいて、前記光源に供給すべき電力を制御する。 In the first feature, the projection display apparatus further includes a light source control unit (light source control unit 350) that controls the light source, and a size detection unit that detects the size of the image projected on the projection plane. The light source control unit controls the power to be supplied to the light source based on the size of the image detected by the size detection unit.
　本発明によれば、省電力モードを簡易に解除することを可能とする投写型映像表示装置を提供することができる。 According to the present invention, it is possible to provide a projection type video display which can easily cancel the power saving mode.
図１は、第１実施形態に係る投写型映像表示装置１００の概略構成を示す図である。FIG. 1 is a view showing a schematic configuration of a projection display apparatus 100 according to the first embodiment. 図２は、第１実施形態に係る投写型映像表示装置１００の概略構成を示す図である。FIG. 2 is a diagram showing a schematic configuration of the projection display apparatus 100 according to the first embodiment. 図３は、第１実施形態に係る投写型映像表示装置１００の光学構成を説明するための図である。FIG. 3 is a diagram for explaining an optical configuration of the projection display apparatus 100 according to the first embodiment. 図４は、第１実施形態に係る第１筐体２００Ａのスライドを説明するための図である。FIG. 4 is a view for explaining a slide of the first housing 200A according to the first embodiment. 図５は、第１実施形態に係る第１筐体２００Ａのスライドを説明するための図である。FIG. 5 is a view for explaining the slide of the first housing 200A according to the first embodiment. 図６は、第１実施形態に係る制御ユニット３００を示すブロック図である。FIG. 6 is a block diagram showing a control unit 300 according to the first embodiment. 図７は、第１実施形態に係る処理内容の実行例を説明するための図である。FIG. 7 is a diagram for explaining an execution example of the processing content according to the first embodiment. 図８は、第１実施形態に係る処理内容の実行例を説明するための図である。FIG. 8 is a diagram for explaining an execution example of the processing content according to the first embodiment. 図９は、第１実施形態に係る省電力モードの解除例を説明するための図である。FIG. 9 is a diagram for explaining an example of releasing the power saving mode according to the first embodiment. 図１０は、第１実施形態に係る省電力モードの解除例を説明するための図である。FIG. 10 is a diagram for explaining an example of releasing the power saving mode according to the first embodiment. 図１１は、第１実施形態に係る投写型映像表示装置１００の動作を示すフロー図である。FIG. 11 is a flow chart showing the operation of the projection display apparatus 100 according to the first embodiment. 図１２は、変更例１に係る制御ユニット３００を示すブロック図である。FIG. 12 is a block diagram showing a control unit 300 according to the first modification. 図１３は、変更例１に係る表示パターンの一例を示す図である。FIG. 13 is a view showing an example of a display pattern according to the first modification. 図１４は、変更例１に係る表示パターンの一例を示す図である。FIG. 14 is a view showing an example of a display pattern according to the first modification. 図１５は、変更例１に係る表示パターンの一例を示す図である。FIG. 15 is a view showing an example of a display pattern according to the first modification. 図１６は、変更例２に係る彩度強調方法を説明するための図である。FIG. 16 is a diagram for explaining the saturation emphasizing method according to the second modification. 図１７は、変更例２に係る輝度強調方法を説明するための図である。FIG. 17 is a diagram for explaining the luminance emphasizing method according to the second modification. 図１８は、変更例２に係る輝度強調の一例を示す図である。FIG. 18 is a diagram illustrating an example of luminance enhancement according to the second modification. 図１９は、変更例２に係る輝度強調の一例を示す図である。FIG. 19 is a diagram illustrating an example of luminance enhancement according to the second modification. 図２０は、変更例２に係る輝度強調の一例を示す図である。FIG. 20 is a diagram illustrating an example of luminance enhancement according to the second modification. 図２１は、変更例３に係る表示パターンの一例を示す図である。FIG. 21 is a diagram illustrating an example of a display pattern according to the third modification. 図２２は、変更例３に係る表示パターンの一例を示す図である。FIG. 22 is a view showing an example of a display pattern according to the third modification.
　以下において、本発明の実施形態に係る投写型映像表示装置について、図面を参照しながら説明する。なお、以下の図面の記載において、同一又は類似の部分には、同一又は類似の符号を付している。 Hereinafter, a projection display apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.
　ただし、図面は模式的なものであり、各寸法の比率などは現実のものとは異なることに留意すべきである。従って、具体的な寸法などは以下の説明を参酌して判断すべきである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれていることは勿論である。 However, it should be noted that the drawings are schematic, and the ratio of each dimension is different from the actual one. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios among the drawings are included.
　［実施形態の概要］
　実施形態に係る投写型映像表示装置は、光源から出射される光を変調する光変調素子と、光変調素子から出射される光を投写面上に投写する投写光学系とを備える。投写型映像表示装置は、投写面上に設定された特定領域において光を遮光する物体を検出する検出部と、所定条件が満たされた場合に、動作モードを省電力モードに移行するモード制御部とを備える。モード制御部は、省電力モードにおいて、特定領域において光を遮光する物体の検出に応じて、動作モードを通常電力モードに移行する。 [Overview of the embodiment]
The projection-type image display apparatus according to the embodiment includes a light modulation element that modulates light emitted from a light source, and a projection optical system that projects light emitted from the light modulation element on a projection surface. The projection type video display apparatus includes a detection unit that detects an object that blocks light in a specific area set on the projection surface, and a mode control unit that shifts the operation mode to the power saving mode when a predetermined condition is satisfied. And In the power saving mode, the mode control unit shifts the operation mode to the normal power mode in response to the detection of an object that blocks light in the specific region.
　実施形態では、投写面上に設定された特定領域において光を遮光する物体が検出された場合に、モード制御部は、省電力モードを解除して、動作モードを通常電力モードに移行する。 In the embodiment, when an object that blocks light in a specific area set on the projection surface is detected, the mode control unit cancels the power saving mode and shifts the operation mode to the normal power mode.
　従って、普段は操作されない操作部（ボタンなど）によって省電力モードを解除する必要がなく、直感的に省電力モードを解除することができる。すなわち、省電力モードを簡易に解除することができる。 Therefore, it is not necessary to release the power saving mode by an operation unit (such as a button) which is not usually operated, and it is possible to intuitively release the power saving mode. That is, the power saving mode can be released easily.
　［第１実施形態］
　（投写型映像表示装置の概略構成）
　以下において、第１実施形態に係る投写型映像表示装置の概略構成について、図面を参照しながら説明する。図１は、第１実施形態に係る投写型映像表示装置１００（床面投写）を示す図である。図２は、第１実施形態に係る投写型映像表示装置１００（壁面投写）を示す図である。 First Embodiment
(Schematic Configuration of Projection Display Device)
Hereinafter, a schematic configuration of a projection display apparatus according to the first embodiment will be described with reference to the drawings. FIG. 1 is a view showing a projection display apparatus 100 (floor surface projection) according to the first embodiment. FIG. 2 is a view showing the projection display apparatus 100 (wall surface projection) according to the first embodiment.
　図１及び図２に示すように、投写型映像表示装置１００は、筐体２００を有しており、投写面（不図示）に映像を投写する。筐体２００には、後述する投写光学系１１０から出射される光を透過する透過領域２１０が設けられる。 As shown in FIGS. 1 and 2, the projection display apparatus 100 has a housing 200, and projects an image on a projection plane (not shown). The housing 200 is provided with a transmission area 210 for transmitting light emitted from a projection optical system 110 described later.
　ここで、投写面は、図１に示すように、床面や机上などの水平面に設けられていてもよく、図２に示すように、壁面などの垂直面（例えば、スクリーン）に設けられてもよい。すなわち、投写型映像表示装置１００は、映像光を床面や机上などの水平面に投写するように配置されてもよく、映像光を壁面などの垂直面に投写するように配置されてもよい。 Here, as shown in FIG. 1, the projection plane may be provided on a horizontal surface such as a floor surface or desk top, and as shown in FIG. 2, provided on a vertical surface such as a wall surface (for example, a screen) It is also good. That is, the projection display apparatus 100 may be disposed to project the image light on a horizontal surface such as a floor surface or a desk, or may be disposed to project the image light on a vertical surface such as a wall surface.
　なお、投写型映像表示装置１００のサイズは、２００ｍｌ～２ｌの容積を有するペットボトル程度である。例えば、投写型映像表示装置１００の容積は、９００ｍｌ程度であり、投写型映像表示装置１００の重量は、８００ｇ程度である。投写型映像表示装置１００によって表示される映像のサイズは、例えば、２０インチ程度である。また、投写型映像表示装置１００と投写面との距離が非常に近いことに留意すべきである。 The size of the projection display apparatus 100 is about the size of a plastic bottle having a volume of 200 ml to 2 l. For example, the volume of the projection display 100 is about 900 ml, and the weight of the projection display 100 is about 800 g. The size of the image displayed by the projection display apparatus 100 is, for example, about 20 inches. In addition, it should be noted that the distance between the projection display 100 and the projection plane is very short.
　（投写型映像表示装置の光学構成）
　以下において、第１実施形態に係る投写型映像表示装置の光学構成について、図面を参照しながら説明する。図３は、第１実施形態に係る投写型映像表示装置１００の光学構成を主として示す図である。 (Optical configuration of projection type video display)
Hereinafter, the optical configuration of the projection display apparatus according to the first embodiment will be described with reference to the drawings. FIG. 3 is a diagram mainly showing the optical configuration of the projection display apparatus 100 according to the first embodiment.
　図３に示すように、投写型映像表示装置１００は、投写光学系１１０と、照明光学系１２０と、冷却ファン１３０と、バッテリ１４０と、電源基板１５０と、主制御基板１６０と、操作基板１７０とを有する。また、投写型映像表示装置１００は、DMD７０と、反射プリズム８０とを有する。 As shown in FIG. 3, the projection type image display apparatus 100 includes a projection optical system 110, an illumination optical system 120, a cooling fan 130, a battery 140, a power supply substrate 150, a main control substrate 160, and an operation substrate 170. And. The projection display apparatus 100 further includes a DMD 70 and a reflecting prism 80.
　また、筐体２００は、第１筐体２００Ａ及び第２筐体２００Ｂによって構成される。上述した透過領域２１０は、第１筐体２００Ａに設けられる。なお、第１筐体２００Ａの一部又は全部は、後述するように、第２筐体２００Ｂに収容可能に構成される。 Further, the case 200 is configured of a first case 200A and a second case 200B. The transmissive region 210 described above is provided in the first housing 200A. Note that, as will be described later, a part or all of the first housing 200A is configured to be accommodated in the second housing 200B.
　投写光学系１１０は、DMD７０から出射された色成分光（映像光）を投写面に投写する。具体的には、投写光学系１１０は、投写レンズ群１１１と、反射ミラー１１２とを有する。 The projection optical system 110 projects color component light (image light) emitted from the DMD 70 onto a projection surface. Specifically, the projection optical system 110 has a projection lens group 111 and a reflection mirror 112.
　投写レンズ群１１１は、DMD７０から出射された色成分光（映像光）を反射ミラー１１２側に出射する。投写レンズ群１１１は、投写光学系１１０の光軸Ｌを中心とする略円形形状のレンズ、投写光学系１１０の光軸Ｌを中心とする略円形形状の一部分によって構成される形状（例えば、下半分の半円形状）のレンズなどを含む。 The projection lens group 111 emits color component light (image light) emitted from the DMD 70 to the reflection mirror 112 side. The projection lens group 111 has a substantially circular shape with the optical axis L of the projection optical system 110 as its center, and a shape (for example, the lower part of the circular shape with the optical axis L of the projection optical system 110 as its center) Half-circle shaped lens etc.
　なお、投写レンズ群１１１に含まれるレンズの径は、反射ミラー１１２に近いほど大きいことに留意すべきである。 It should be noted that the diameter of the lens included in the projection lens group 111 is larger as it is closer to the reflection mirror 112.
　反射ミラー１１２は、投写レンズ群１１１から出射された色成分光（映像光）を反射する。反射ミラー１１２は、映像光を集光した上で、映像光を広角化する。例えば、反射ミラー１１２は、投写レンズ群１１１側に凹面を有する非球面ミラーである。ここで、反射ミラー１１２は、投写光学系１１０の光軸Ｌを中心とする略円形形状の一部分によって構成される形状（例えば、下半分の半円形状）を有する。 The reflection mirror 112 reflects color component light (image light) emitted from the projection lens group 111. The reflection mirror 112 condenses the video light and then widens the video light. For example, the reflection mirror 112 is an aspheric mirror having a concave surface on the projection lens group 111 side. Here, the reflection mirror 112 has a shape (for example, a semicircular shape in the lower half) configured by a part of a substantially circular shape centering on the optical axis L of the projection optical system 110.
　反射ミラー１１２で集光された映像光は、筐体２００に設けられた透過領域２１０を透過する。筐体２００に設けられた透過領域２１０は、反射ミラー１１２によって映像光が集光される位置近傍に設けられることが好ましい。 The image light condensed by the reflection mirror 112 is transmitted through the transmission region 210 provided in the housing 200. The transmission area 210 provided in the housing 200 is preferably provided in the vicinity of the position where the image light is collected by the reflection mirror 112.
　照明光学系１２０は、光源１０と、ダイクロイックプリズム３０と、ロッドインテグレータ４０と、ミラー５１と、ミラー５２と、レンズ６１と、レンズ６２と、レンズ６３とを有する。 The illumination optical system 120 includes a light source 10, a dichroic prism 30, a rod integrator 40, a mirror 51, a mirror 52, a lens 61, a lens 62, and a lens 63.
　光源１０は、複数色の色成分光を個別に出射するように構成される。また、光源１０には、光源１０で生じる熱を放熱するヒートシンクが併設されていてもよい。なお、光源１０は、例えば、光源１０Ｒ、光源１０Ｇ及び光源１０Ｂによって構成される。 The light source 10 is configured to individually emit color component light of a plurality of colors. Further, the light source 10 may be provided with a heat sink for radiating heat generated by the light source 10. The light source 10 includes, for example, the light source 10R, the light source 10G, and the light source 10B.
　光源１０Ｒは、赤成分光Ｒを出射する光源であり、例えば、赤ＬＥＤ（Ｌｉｇｈｔ　Ｅｍｉｔｔｉｎｇ　Ｄｉｏｄｅ）や赤ＬＤ（Ｌａｓｅｒ　Ｄｉｏｄｅ）である。光源１０Ｒには、金属などのように放熱性が良好な部材によって構成されるヒートシンクが併設されてもよい。 The light source 10R is a light source that emits red component light R, and is, for example, a red LED (Light Emitting Diode) or a red LD (Laser Diode). The light source 10 </ b> R may be provided with a heat sink made of a member having good heat dissipation such as metal.
　光源１０Ｇは、緑成分光Ｇを出射する光源であり、例えば、緑ＬＥＤや緑ＬＤである。光源１０Ｇには、金属などのように放熱性が良好な部材によって構成されるヒートシンクが併設されてもよい。 The light source 10G is a light source that emits green component light G, and is, for example, a green LED or a green LD. The light source 10 </ b> G may be provided with a heat sink made of a member having a good heat dissipation property such as metal.
　光源１０Ｂは、青成分光Ｂを出射する光源であり、例えば、青ＬＥＤや青ＬＤである。光源１０Ｂには、金属などのように放熱性が良好な部材によって構成されるヒートシンクが併設されてもよい。 The light source 10B is a light source that emits blue component light B, and is, for example, a blue LED or a blue LD. The light source 10 </ b> B may be provided with a heat sink made of a member having a good heat dissipation property such as metal.
　ダイクロイックプリズム３０は、光源１０Ｒから出射される赤成分光Ｒ、光源１０Ｇから出射される緑成分光Ｇ、光源１０Ｂから出射される青成分光Ｂを合成する。 The dichroic prism 30 combines the red component light R emitted from the light source 10R, the green component light G emitted from the light source 10G, and the blue component light B emitted from the light source 10B.
　ロッドインテグレータ４０は、光入射面と、光出射面と、光入射面の外周から光出射面の外周に亘って設けられる光反射側面とを有する。ロッドインテグレータ４０は、ダイクロイックプリズム３０から出射された色成分光を均一化する。詳細には、ロッドインテグレータ４０は、光反射側面で色成分光を反射することによって、色成分光を均一化する。なお、ロッドインテグレータ４０は、ガラスなどによって構成される中実ロッドであってもよく、ミラー面によって内面が構成される中空ロッドであってもよい。 The rod integrator 40 has a light incident surface, a light output surface, and a light reflection side surface provided from the outer periphery of the light incident surface to the outer periphery of the light output surface. The rod integrator 40 makes the color component light emitted from the dichroic prism 30 uniform. Specifically, the rod integrator 40 makes color component light uniform by reflecting the color component light on the light reflection side. The rod integrator 40 may be a solid rod made of glass or the like, or a hollow rod whose inner surface is made up of mirror surfaces.
　例えば、第１実施形態では、ロッドインテグレータ４０は、光源１０から出射される光の進行方向に向けて、光の進行方向に垂直な断面が大きくなるテーパ形状を有する。但し、実施形態は、これに限定されるものではない。ロッドインテグレータ４０は、光源１０から出射される光の進行方向に向けて、光の進行方向に垂直な断面が小さくなる逆テーパ形状を有してもよい。 For example, in the first embodiment, the rod integrator 40 has a tapered shape in which the cross section perpendicular to the traveling direction of the light increases in the traveling direction of the light emitted from the light source 10. However, the embodiment is not limited to this. The rod integrator 40 may have an inverse taper shape in which the cross section perpendicular to the traveling direction of the light decreases in the traveling direction of the light emitted from the light source 10.
　ミラー５１及びミラー５２は、ロッドインテグレータ４０から出射された光をDMD７０に導くために、光の光路を折り曲げる反射ミラーである。 The mirror 51 and the mirror 52 are reflection mirrors that bend the optical path of light in order to guide the light emitted from the rod integrator 40 to the DMD 70.
　レンズ６１、レンズ６２及びレンズ６３は、光源１０から出射された色成分光の拡大を抑制しながら、色成分光をDMD７０上に略結像するリレーレンズである。 The lenses 61, 62 and 63 are relay lenses that substantially form color component light on the DMD 70 while suppressing expansion of the color component light emitted from the light source 10.
　冷却ファン１３０は、筐体２００の外部に連通しており、筐体２００内の熱を放出するように構成される。或いは、冷却ファン１３０は、筐体２００の外部の空気を筐体２００内に送り込むように構成される。例えば、冷却ファン１３０は、光源１０の近傍に設けられており、光源１０を冷却するように構成される。 The cooling fan 130 is in communication with the outside of the housing 200 and configured to release the heat in the housing 200. Alternatively, the cooling fan 130 is configured to feed the air outside the housing 200 into the housing 200. For example, the cooling fan 130 is provided near the light source 10 and configured to cool the light source 10.
　バッテリ１４０は、投写型映像表示装置１００に供給すべき電力を蓄積する。 The battery 140 stores the power to be supplied to the projection display 100.
　電源基板１５０は、バッテリ１４０に接続されており、ＡＣ電力をＤＣ電力に変換する電力変換回路を有する。 The power supply substrate 150 is connected to the battery 140 and has a power conversion circuit that converts AC power into DC power.
　主制御基板１６０は、投写型映像表示装置１００の動作を制御する主制御回路（後述する制御ユニット３００）を有する。 The main control board 160 has a main control circuit (a control unit 300 described later) that controls the operation of the projection display apparatus 100.
　操作基板１７０は、投写型映像表示装置１００に設けられる操作部（ボタンなど）に接続されており、操作部から入力される操作信号を主制御基板１６０（主制御回路）に伝達する。 The operation board 170 is connected to an operation unit (button or the like) provided in the projection display apparatus 100, and transmits an operation signal input from the operation unit to the main control board 160 (main control circuit).
　DMD７０は、複数の微小ミラーによって構成されており、複数の微小ミラーは可動式である。各微小ミラーは、基本的に１画素に相当する。DMD７０は、各微小ミラーの角度を変更することによって、色成分光が有効光として投写光学系１１０側に導かれるように色成分光を反射するか否かを切り替える。 The DMD 70 is configured by a plurality of micro mirrors, and the plurality of micro mirrors are movable. Each micro mirror basically corresponds to one pixel. The DMD 70 switches whether or not to reflect color component light so that the color component light is guided to the projection optical system 110 side as effective light by changing the angle of each micro mirror.
　反射プリズム８０は、照明光学系１２０から出射される光をDMD７０側に透過する。一方で、反射プリズム８０は、DMD７０から出射される光を投写光学系１１０側に反射する。 The reflection prism 80 transmits the light emitted from the illumination optical system 120 to the DMD 70 side. On the other hand, the reflection prism 80 reflects the light emitted from the DMD 70 to the projection optical system 110 side.
　なお、図４及び図５に示すように、第１筐体２００Ａは、第２筐体２００Ｂの内壁に沿ってスライド可能に構成される。反射ミラー１１２は、第１筐体２００Ａのスライドと連動して、回動軸Ｐを中心として回動する。 As shown in FIGS. 4 and 5, the first housing 200A is configured to be slidable along the inner wall of the second housing 200B. The reflection mirror 112 rotates around the rotation axis P in conjunction with the slide of the first housing 200A.
　（制御ユニットの構成）
　以下において、第１実施形態に係る制御ユニットについて、図面を参照しながら説明する。図６は、第１実施形態に係る制御ユニット３００を示すブロック図である。制御ユニット３００は、投写型映像表示装置１００に設けられており、投写型映像表示装置１００を制御する。 (Configuration of control unit)
The control unit according to the first embodiment will be described below with reference to the drawings. FIG. 6 is a block diagram showing a control unit 300 according to the first embodiment. The control unit 300 is provided in the projection display apparatus 100 and controls the projection display apparatus 100.
　図６に示すように、制御ユニット３００は、記憶部３１０と、検出部３２０と、指示部３３０と、モード制御部３４０と、光源制御部３５０と、素子制御部３６０とを有する。 As shown in FIG. 6, the control unit 300 includes a storage unit 310, a detection unit 320, an instruction unit 330, a mode control unit 340, a light source control unit 350, and an element control unit 360.
　記憶部３１０は、投写面上に設けられる特定領域と投写型映像表示装置１００に対する処理内容とを対応付ける情報を記憶する。 The storage unit 310 stores information that associates the specific area provided on the projection plane with the processing content for the projection display apparatus 100.
　ここで、特定領域は、投写型映像表示装置１００（投写光学系１１０）から出射される光が投写される投写領域内に設けられていてもよく、投写領域外に設けられていてもよい。例えば、特定領域は、投写領域の４辺である。或いは、特定領域は、投写領域の４隅である。 Here, the specific area may be provided in the projection area where the light emitted from the projection type video display 100 (projection optical system 110) is projected, or may be provided outside the projection area. For example, the specific area is four sides of the projection area. Alternatively, the specific area is four corners of the projection area.
　ここで、特定領域は、投写領域の内側と投写領域の外側との境界領域（例えば、投写領域の４辺、投写領域の４隅）であることが好ましい。このような境界領域では、輝度の変化が大きいため、特定領域において光を遮光する物体を容易に検出できることに留意すべきである。 Here, the specific area is preferably a boundary area between the inside of the projection area and the outside of the projection area (for example, 4 sides of the projection area, 4 corners of the projection area). It should be noted that in such a boundary area, the change in luminance is large, so that an object that blocks light in a specific area can be easily detected.
　また、処理内容は、投写型映像表示装置１００に実行させるべき処理である。例えば、処理内容は、投写型映像表示装置１００の電源ＯＮ／OFFの切り替え、投写領域に投写される映像の回転、投写領域に投写される映像の再生／停止の切り替え、投写型映像表示装置１００に設けられるモードの切り替えなどである。また、処理内容は、例えば、投写領域に投写される映像のページ送り、投写領域に投写される映像のページ戻り、投写型映像表示装置１００の設定（明るさ調整やコントラスト調整）を変更するためのメニュー呼び出しなどである。 The processing content is processing to be executed by the projection display apparatus 100. For example, the processing content includes switching the power ON / OFF of the projection type video display device 100, rotating the video projected on the projection area, switching playback / stop of the video projected on the projection area, the projection video display device 100 Switching of the mode provided in the The processing contents include, for example, page turning of the image projected in the projection area, page return of the image projected in the projection area, and changing settings (brightness adjustment and contrast adjustment) of the projection display apparatus 100. Such as menu call.
　検出部３２０は、特定領域において光を遮光する物体（例えば、ユーザの手など）を検出する。具体的には、第１実施形態では、検出部３２０は、特定領域において、投写型映像表示装置１００（投写光学系１１０）から出射される光を遮光する物体を検出することが好ましい。すなわち、特定領域は、投写領域内に設けられることが好ましい。 The detection unit 320 detects an object (for example, a user's hand or the like) that blocks light in a specific area. Specifically, in the first embodiment, the detection unit 320 preferably detects an object that blocks light emitted from the projection display 100 (projection optical system 110) in a specific area. That is, the specific area is preferably provided in the projection area.
　検出部３２０は、例えば、特定領域における明るさの変化を検出可能に構成された撮像素子である。或いは、検出部３２０は、例えば、特定領域における明るさの変換を検出可能に構成された照度センサであってもよい。照度センサは、特定領域のみをカバーする指向性を有することが好ましい。 The detection unit 320 is, for example, an imaging element configured to be able to detect a change in brightness in a specific area. Alternatively, the detection unit 320 may be, for example, an illuminance sensor configured to be able to detect the conversion of brightness in a specific area. The illuminance sensor preferably has directivity which covers only a specific area.
　指示部３３０は、特定領域において光を遮光する物体の検出時間が一定期間以上である場合に、特定領域と対応付けられる処理内容の実行を指示する。具体的には、投写型映像表示装置１００内で処理が完結する処理内容については、指示部３３０は、投写型映像表示装置１００に設けられる機能ブロック（例えば、電源ブロックなど）に対して、特定領域と対応付けられる処理内容の実行を指示する。或いは、投写型映像表示装置１００内で処理が完結しない処理内容については、他の装置（例えば、投写型映像表示装置１００に接続されたパーソナルコンピュータなど）に対して、特定領域と対応付けられる処理内容の実行を指示する。 The instruction unit 330 instructs the execution of the processing content associated with the specific region when the detection time of the object shielding the light in the specific region is equal to or longer than a predetermined period. Specifically, with regard to processing contents whose processing is completed in the projection display apparatus 100, the instruction unit 330 identifies the functional block (for example, power supply block etc.) provided in the projection display apparatus 100. It instructs execution of the processing content associated with the area. Alternatively, with regard to processing content whose processing is not completed in the projection display apparatus 100, processing that is associated with a specific area with another apparatus (for example, a personal computer connected to the projection display apparatus 100). Direct the execution of the content.
　モード制御部３４０は、投写型映像表示装置１００の動作モードを制御する。具体的には、動作モードは、通常電力モード、省電力モード又はスタンバイモードである。 The mode control unit 340 controls the operation mode of the projection display apparatus 100. Specifically, the operation mode is a normal power mode, a power saving mode, or a standby mode.
　通常電力モードは、通常の電力によって、光源１０及びDMD７０が制御されるモードである。 The normal power mode is a mode in which the light source 10 and the DMD 70 are controlled by normal power.
　省電力モードは、通常電力モードよりも少ない電力によって、光源１０及びDMD７０の少なくとも一方が制御されるモードである。 The power saving mode is a mode in which at least one of the light source 10 and the DMD 70 is controlled by less power than the normal power mode.
　スタンバイモードは、省電力モードよりもさらに少ない電力によって、光源１０及びDMD７０が制御されるモードである。 The standby mode is a mode in which the light source 10 and the DMD 70 are controlled by power less than the power saving mode.
　ここで、モード制御部３４０は、電源がＯＮになったときに、映像入力信号が入力されている場合に、動作モードを通常電力モードに移行する。或いは、モード制御部３４０は、省電力モードにおいて、一定期間内にユーザ操作が検出された場合に、省電力モードを解除して、動作モードを通常電力モードに移行する。或いは、モード制御部３４０は、スタンバイモードにおいて、一定期間内に映像入力信号が入力された場合に、スタンバイモードを解除して、動作モードを通常電力モードに移行する。 Here, the mode control unit 340 shifts the operation mode to the normal power mode when the video input signal is input when the power is turned on. Alternatively, in the power saving mode, when a user operation is detected within a certain period, the mode control unit 340 cancels the power saving mode and shifts the operation mode to the normal power mode. Alternatively, in the standby mode, when the video input signal is input within a certain period in the standby mode, the mode control unit 340 cancels the standby mode and shifts the operation mode to the normal power mode.
　なお、ユーザ操作は、投写面上に設定される特定領域において光を遮光する操作であってもよく、筐体２００に設けられた操作部（ボタンなど）の操作であってもよい。 Note that the user operation may be an operation of blocking light in a specific area set on the projection plane, or may be an operation of an operation unit (button or the like) provided in the housing 200.
　モード制御部３４０は、通常電力モードにおいて、所定条件が満たされた場合に、動作モードを省電力モードに移行する。ここで、所定条件は、（１）一定期間内にユーザ操作が検出されないこと、（２）一定期間内に投写領域に投写される映像が変化しないこと（例えば、ページ送りやページ戻りが一定期間行われないこと）などである。なお、モード制御部３４０は、省電力モードにおいて、一定期間内にユーザ操作が検出されない場合に、電源をＯＦＦにしてもよい。 The mode control unit 340 shifts the operation mode to the power saving mode when the predetermined condition is satisfied in the normal power mode. Here, the predetermined condition is (1) that no user operation is detected within a predetermined period, and (2) that an image projected onto the projection area does not change within a predetermined period (for example, page turning or page returning is a predetermined period Not be done). In the power saving mode, the mode control unit 340 may turn off the power when the user operation is not detected within a certain period.
　モード制御部３４０は、電源がＯＮとなったときに、映像入力信号が入力されていない場合に、動作モードをスタンバイモードに移行する。なお、モード制御部３４０は、スタンバイモードにおいて、一定期間内に映像入力信号が入力されない場合に、電源をＯＦＦにしてもよい。 The mode control unit 340 shifts the operation mode to the standby mode when the video input signal is not input when the power is turned on. In the standby mode, the mode control unit 340 may turn off the power when no video input signal is input within a predetermined period.
　光源制御部３５０は、光源１０を制御する。具体的には、光源制御部３５０は、省電力モードにおいて、通常電力モードと比べて、光源１０に供給すべき電力を減少する。 The light source control unit 350 controls the light source 10. Specifically, the light source control unit 350 reduces the power to be supplied to the light source 10 in the power saving mode as compared to the normal power mode.
　詳細には、光源制御部３５０は、省電力モードにおいて、光源１０Ｒ、光源１０Ｇ及び光源１０Ｂに供給すべき電力を均等に減少してもよい。或いは、光源制御部３５０は、省電力モードにおいて、消費電力が大きい光源１０に供給すべき電力を優先的に減少してもよい。例えば、光源制御部３５０は、光源１０Ｇ、光源１０Ｂ、光源１０Ｒの順で、光源１０に供給すべき電力を優先的に減少してもよい。 Specifically, the light source control unit 350 may equally reduce the power to be supplied to the light source 10R, the light source 10G, and the light source 10B in the power saving mode. Alternatively, in the power saving mode, the light source control unit 350 may preferentially reduce the power to be supplied to the light source 10 with high power consumption. For example, the light source control unit 350 may preferentially reduce the power to be supplied to the light source 10 in the order of the light source 10G, the light source 10B, and the light source 10R.
　或いは、光源制御部３５０は、省電力モードにおいて、通常電力モードと比べて、１フレーム内において、光源１０が発光する期間を減少してもよい。 Alternatively, in the power saving mode, the light source control unit 350 may reduce the light emission period of the light source 10 in one frame as compared to the normal power mode.
　例えば、１秒間に６０フレームで映像が表示されるケースについて考える。通常電力モードでは、全６０フレームが映像表示フレームである。一方で、省電力モードにおいて、全６０フレームのうち、半数の３０フレームが映像表示フレームである。省電力モードにおいて、全６０フレームのうち、残りの半数の３０フレームが黒表示フレームである。なお、映像表示フレーム及び黒表示フレームは、交互に表示されることが好ましい。このようなケースにおいて、光源制御部３５０は、黒表示フレームにおいて光源１０を消灯する。 For example, consider the case where an image is displayed at 60 frames per second. In the normal power mode, all 60 frames are video display frames. On the other hand, in the power saving mode, half of 30 frames out of the total 60 frames are video display frames. In the power saving mode, the remaining half 30 of the total 60 frames are black display frames. Preferably, the video display frame and the black display frame are displayed alternately. In such a case, the light source control unit 350 turns off the light source 10 in the black display frame.
　なお、光源制御部３５０は、光源１０が固体光源ではなく、光源１０が白色光源（ＵＨＰランプやキセノンランプ）である場合には、光源１０が発光する期間をフレーム単位で制御することが難しいため、省電力モードにおいて、光源１０に供給すべき電力を減少する。 When the light source 10 is not a solid light source but the light source 10 is a white light source (UHP lamp or xenon lamp), it is difficult for the light source control unit 350 to control the light emission period of the light source 10 in frame units. In the power saving mode, the power to be supplied to the light source 10 is reduced.
　なお、光源制御部３５０は、スタンバイモードにおいて、スタンバイ映像（ブルーバック）を表示するために、光源１０Ｂのみを主として点灯してもよい。或いは、光源制御部３５０は、スタンバイモードにおいて、光源１０の制御を停止してもよい。すなわち、光源制御部３５０は、スタンバイモードにおいて、光源１０に電力を供給しなくてもよい。 The light source control unit 350 may mainly turn on only the light source 10B in order to display a standby image (blue back) in the standby mode. Alternatively, the light source control unit 350 may stop the control of the light source 10 in the standby mode. That is, the light source control unit 350 may not supply power to the light source 10 in the standby mode.
　素子制御部３６０は、DMD７０を制御する。具体的には、素子制御部３６０は、複数の微小ミラーのうち、少なくとも１つの微小ミラーに電圧を印加せずに、他の微小ミラーに電圧を印加する。 The element control unit 360 controls the DMD 70. Specifically, the element control unit 360 applies a voltage to another micro mirror without applying a voltage to at least one of the plurality of micro mirrors.
　詳細には、上述したように、DMD７０は、複数の微小ミラーによって構成される。複数の微小ミラーは、電圧の印加に応じて、微小ミラーによって反射される光が投写面に到達するか否かを切り替えるように構成される。すなわち、微小ミラーによって反射される光が投写面に到達させる場合であっても、微小ミラーによって反射される光が投写面に到達させない場合であっても、微小ミラーに電圧が印加される。 In detail, as described above, the DMD 70 is configured by a plurality of micro mirrors. The plurality of micromirrors are configured to switch whether light reflected by the micromirrors reaches the projection surface according to the application of the voltage. That is, even when the light reflected by the micromirror reaches the projection plane, the voltage is applied to the micromirror even when the light reflected by the micromirror does not reach the projection plane.
　第１実施形態では、素子制御部３６０は、省電力モードにおいて、微小ミラーに電圧を印加しないことによって、省電力化が図られる。電圧が印加されない微小ミラーによって反射された光は、投写面に到達するか否か制御されず、投写面上で画素を構成しないことに留意すべきである。 In the first embodiment, the element control unit 360 does not apply a voltage to the micro mirror in the power saving mode, thereby achieving power saving. It should be noted that the light reflected by the micromirror to which no voltage is applied is not controlled whether it reaches the projection surface and does not constitute a pixel on the projection surface.
　ここで、素子制御部３６０は、電圧が印加されない微小ミラーとして、複数の微小ミラーのうち、投写面に到達させない光を反射する微小ミラー（ＯＦＦの画素と対応する微小ミラー）を選択してもよい。 Here, even if the element control unit 360 selects a minute mirror (a minute mirror corresponding to an OFF pixel) that reflects light not reaching the projection surface among a plurality of minute mirrors as a minute mirror to which no voltage is applied. Good.
　例えば、素子制御部３６０は、ＯＮの画素と対応する微小ミラーに１２Ｖを印加し、ＯＦＦの画素と対応する微小ミラーに－１２Ｖを印加するように構成される。このようなケースにおいて、素子制御部３６０は、ＯＦＦの画素と対応する微小ミラーに電圧を印加せずに、ＯＮの画素と対応する微小ミラーにのみ１２Ｖを印加する。これによって、コントラストが落ちるが、省電力化を図ることができる。 For example, the element control unit 360 is configured to apply 12 V to the micro mirror corresponding to the ON pixel and to apply -12 V to the micro mirror corresponding to the OFF pixel. In such a case, the element control unit 360 applies 12 V only to the minute mirror corresponding to the ON pixel without applying a voltage to the minute mirror corresponding to the OFF pixel. Although this lowers the contrast, it is possible to save power.
　或いは、素子制御部３６０は、複数の微小ミラーのうち、電圧が印加されない微小ミラーを市松模様（チェッカーパターン）状に選択してもよい。 Alternatively, the element control unit 360 may select a micro mirror to which a voltage is not applied among the plurality of micro mirrors in a checkered pattern.
　なお、素子制御部３６０は、スタンバイモードにおいて、スタンバイ映像（ブルーバック）を表示するようにDMD７０を制御してもよい。或いは、素子制御部３６０は、スタンバイモードにおいて、DMD７０の制御を停止してもよい。すなわち、素子制御部３６０は、スタンバイモードにおいて、DMD７０に電力を供給しなくてもよい。 The element control unit 360 may control the DMD 70 to display a standby video (blue back) in the standby mode. Alternatively, the element control unit 360 may stop control of the DMD 70 in the standby mode. That is, the element control unit 360 may not supply power to the DMD 70 in the standby mode.
　（処理内容の実行例）
　以下において、第１実施形態に係る処理内容の実行例について、図面を参照しながら説明する。図７及び図８は、第１実施形態に係る処理内容の実行例を説明するための図である。 (Execution example of processing contents)
Hereinafter, an execution example of the processing content according to the first embodiment will be described with reference to the drawings. FIG. 7 and FIG. 8 are diagrams for explaining an execution example of the processing content according to the first embodiment.
　第１に、特定領域が投写領域の４隅に設けられるケースについて、図７を参照しながら説明する。図７に示すように、投写領域の４隅に設けられた４つの特定領域には、それぞれ、互いに異なる処理内容が対応付けられている。 First, the case where the specific areas are provided at the four corners of the projection area will be described with reference to FIG. As shown in FIG. 7, processing contents different from one another are associated with the four specific areas provided at the four corners of the projection area.
　第２に、特定領域が投写領域の４辺に設けられるケースについて、図８を参照しながら説明する。図８に示すように、投写領域の４辺に設けられた４つの特定領域には、それぞれ、互いに異なる処理内容が対応付けられている。 Secondly, the case where the specific area is provided on the four sides of the projection area will be described with reference to FIG. As shown in FIG. 8, processing contents different from one another are associated with the four specific areas provided on the four sides of the projection area.
　（省電力モードの解除）
　以下において、第１実施形態に係る省電力モードの解除例について、図面を参照しながら説明する。図９及び図１０は、第１実施形態に係る省電力モードの解除例を示す図である。 (Cancel the power saving mode)
Hereinafter, an example of releasing the power saving mode according to the first embodiment will be described with reference to the drawings. 9 and 10 are diagrams showing an example of releasing the power saving mode according to the first embodiment.
　第１に、図９に示すように、投写型映像表示装置１００が床面に投写するように配置されている場合には、省電力モードにおいて、床面に設定された特定領域において光を遮光する物体が検出された場合に、省電力モードが解除される。 First, as shown in FIG. 9, when the projection display apparatus 100 is arranged to project on a floor surface, in the power saving mode, light is blocked in a specific area set on the floor surface. When the target object is detected, the power saving mode is released.
　第２に、図１０に示すように、投写型映像表示装置１００が壁面に投写するように配置されている場合には、省電力モードにおいて、壁面に設定された特定領域において光を遮光する物体が検出された場合に、省電力モードが解除される。 Second, as shown in FIG. 10, when the projection display apparatus 100 is arranged to project on a wall surface, an object that blocks light in a specific area set on the wall surface in the power saving mode. When is detected, the power saving mode is released.
　（投写型映像表示装置の動作）
　以下において、第１実施形態に係る投写型映像表示装置（制御ユニット）の動作について、図面を参照しながら説明する。図１１は、第１実施形態に係る投写型映像表示装置１００（制御ユニット３００）の動作を示すフロー図である。 (Operation of the projection display)
Hereinafter, the operation of the projection display apparatus (control unit) according to the first embodiment will be described with reference to the drawings. FIG. 11 is a flowchart showing the operation of the projection display apparatus 100 (control unit 300) according to the first embodiment.
　図１１に示すように、ステップ１０において、投写型映像表示装置１００は、電源がＯＮとなったことを検出する。 As shown in FIG. 11, in step 10, the projection display apparatus 100 detects that the power is turned on.
　ステップ１１において、投写型映像表示装置１００は、映像入力信号が入力されているか否かを判定する。映像入力信号が入力されている場合に、投写型映像表示装置１００は、ステップ１４の処理に移る。一方で、映像入力信号が入力されていない場合に、投写型映像表示装置１００は、ステップ１２の処理に移る。 In step 11, the projection display apparatus 100 determines whether a video input signal is input. When the video input signal is input, the projection display apparatus 100 proceeds to the process of step 14. On the other hand, when the video input signal is not input, the projection display apparatus 100 proceeds to the process of step 12.
　ステップ１２において、投写型映像表示装置１００は、動作モードをスタンバイモードに移行する。 In step 12, the projection display apparatus 100 shifts the operation mode to the standby mode.
　ステップ１３において、投写型映像表示装置１００は、一定期間内に映像入力信号が入力されたか否かを判定する。一定期間内に映像入力信号が入力された場合に、投写型映像表示装置１００は、ステップ１４の処理に移る。一方で、一定期間内に映像入力信号が入力されない場合に、投写型映像表示装置１００は、ステップ１８の処理に移る。 In step S13, the projection display apparatus 100 determines whether the video input signal is input within a predetermined period. When a video input signal is input within a predetermined period, the projection display apparatus 100 proceeds to the process of step 14. On the other hand, when the video input signal is not input within a predetermined period, the projection display apparatus 100 proceeds to the process of step 18.
　ステップ１４において、投写型映像表示装置１００は、動作モードを通常電力モードに移行する。 In step 14, the projection display apparatus 100 shifts the operation mode to the normal power mode.
　ステップ１５において、投写型映像表示装置１００は、所定条件が満たされているか否かを判定する。所定条件が満たされている場合には、投写型映像表示装置１００は、ステップ１６の処理に移る。所定条件が満たされていない場合には、投写型映像表示装置１００は、ステップ１４の処理に戻る。すなわち、通常電力モードが維持される。 In step 15, the projection display apparatus 100 determines whether a predetermined condition is satisfied. If the predetermined condition is satisfied, the projection display apparatus 100 proceeds to the process of step 16. If the predetermined condition is not satisfied, the projection display apparatus 100 returns to the process of step 14. That is, the normal power mode is maintained.
　なお、所定条件は、上述したように、（１）一定期間内にユーザ操作が検出されないこと、（２）一定期間内に投写領域に投写される映像が変化しないこと（例えば、ページ送りやページ戻りが一定期間行われないこと）などである。 As the predetermined conditions, as described above, (1) no user operation is detected within a certain period, and (2) that the image projected onto the projection area does not change within a certain period (for example, page feed or page Return is not performed for a certain period).
　ステップ１６において、投写型映像表示装置１００は、動作モードを省電力モードに移行する。 In step 16, the projection display apparatus 100 shifts the operation mode to the power saving mode.
　ステップ１７において、投写型映像表示装置１００は、一定期間内にユーザ操作が検出されたか否かを判定する。一定期間内にユーザ操作が検出された場合に、投写型映像表示装置１００は、ステップ１４の処理に戻る。すなわち、省電力モードが解除される。一方で、一定期間内にユーザ操作が検出されない場合に、投写型映像表示装置１００は、ステップ１８の処理に移る。 In step S17, the projection display apparatus 100 determines whether a user operation has been detected within a predetermined period. When a user operation is detected within a predetermined period, the projection display apparatus 100 returns to the process of step 14. That is, the power saving mode is released. On the other hand, when the user operation is not detected within a certain period, the projection display apparatus 100 proceeds to the process of step 18.
　ステップ１８において、投写型映像表示装置１００は、電源をＯＦＦにする。 In step 18, the projection display apparatus 100 turns off the power.
　（作用及び効果）
　第１実施形態では、投写面上に設定された特定領域において光を遮光する物体が検出された場合に、モード制御部３４０は、省電力モードを解除して、動作モードを通常電力モードに移行する。 (Action and effect)
In the first embodiment, when an object that blocks light is detected in the specific area set on the projection surface, the mode control unit 340 cancels the power saving mode and shifts the operation mode to the normal power mode. Do.
　従って、普段は操作されない操作部（ボタンなど）によって省電力モードを解除する必要がなく、直感的に省電力モードを解除することができる。すなわち、省電力モードを簡易に解除することができる。 Therefore, it is not necessary to release the power saving mode by an operation unit (such as a button) which is not usually operated, and it is possible to intuitively release the power saving mode. That is, the power saving mode can be released easily.
　［変更例１］
　以下において、第１実施形態の変更例１について、図面を参照しながら説明する。以下においては、第１実施形態との相違点について主として説明する。 [Modification 1]
Hereinafter, a first modification of the first embodiment will be described with reference to the drawings. In the following, differences from the first embodiment will be mainly described.
　変更例１では、投写型映像表示装置１００は、光源１０から出射される光以外の外光の光量に基づいて、光源１０に供給すべき電力を制御する。 In the first modification, the projection display apparatus 100 controls the power to be supplied to the light source 10 based on the amount of external light other than the light emitted from the light source 10.
　（制御ユニットの構成）
　以下において、変更例１に係る制御ユニットについて、図面を参照しながら説明する。図１２は、変更例１に係る制御ユニット３００を示すブロック図である。なお、図１２では、図６と同様の構成について、同様の符号を付していることに留意すべきである。 (Configuration of control unit)
Hereinafter, a control unit according to the first modification will be described with reference to the drawings. FIG. 12 is a block diagram showing a control unit 300 according to the first modification. It should be noted that, in FIG. 12, the same components as in FIG. 6 are denoted by the same reference numerals.
　図１２に示すように、制御ユニット３００は、図６に示す構成に加えて、外光検出部３７０を有する。 As shown in FIG. 12, the control unit 300 has an external light detection unit 370 in addition to the configuration shown in FIG.
　外光検出部３７０は、光源１０から出射される光以外の外光の光量を検出する。例えば、外光検出部３７０は、コントラストに基づいて、外光の光量を検出する。すなわち、外光の光量が大きい場合に、コントラストが小さくなり、外光の光量が小さい場合に、コントラストが大きくなる。従って、外光検出部３７０は、コントラストに基づいて、外光の光量を検出することができる。 The external light detection unit 370 detects the amount of external light other than the light emitted from the light source 10. For example, the outside light detection unit 370 detects the amount of outside light based on the contrast. That is, the contrast decreases when the amount of external light is large, and the contrast increases when the amount of external light is small. Therefore, the external light detection unit 370 can detect the light amount of the external light based on the contrast.
　具体的には、外光検出部３７０は、例えば、投写領域における明るさの変化を検出可能に構成された撮像素子を有する。或いは、外光検出部３７０は、例えば、投写領域における明るさの変換を検出可能に構成された照度センサを有する。 Specifically, the external light detection unit 370 includes, for example, an imaging element configured to be able to detect a change in brightness in the projection area. Alternatively, the external light detection unit 370 includes, for example, an illuminance sensor configured to be able to detect the conversion of the brightness in the projection area.
　第１に、外光検出部３７０が撮像素子又は照度センサを有する場合には、図１３に示すように、光源制御部３５０及び素子制御部３６０は、全白のフレーム及び全黒のフレームが表示されるように光源１０及びDMD７０を制御する。外光検出部３７０は、全白フレームの明るさと全黒フレームの明るさとの差分に基づいて、コントラストを検出する。すなわち、外光検出部３７０は、コントラストによって、外光の光量を検出する。 First, when the outside light detection unit 370 has an imaging device or an illumination sensor, as shown in FIG. 13, the light source control unit 350 and the element control unit 360 display an all white frame and an all black frame. The light source 10 and the DMD 70 are controlled as described above. The external light detection unit 370 detects the contrast based on the difference between the brightness of the all white frame and the brightness of the all black frame. That is, the outside light detection unit 370 detects the light amount of the outside light by the contrast.
　第２に、外光検出部３７０が撮像素子を有する場合には、図１４に示すように、光源制御部３５０及び素子制御部３６０は、黒領域及び白領域を有するフレームが表示されるように光源１０及びDMD７０を制御する。外光検出部３７０は、黒領域の明るさ及び白領域の明るさに基づいて、コントラストを検出する。すなわち、外光検出部３７０は、コントラストによって、外光の光量を検出する。 Second, when the outside light detection unit 370 has an imaging device, as shown in FIG. 14, the light source control unit 350 and the element control unit 360 display a frame having a black area and a white area. The light source 10 and the DMD 70 are controlled. The external light detection unit 370 detects the contrast based on the brightness of the black area and the brightness of the white area. That is, the outside light detection unit 370 detects the light amount of the outside light by the contrast.
　第３に、外光検出部３７０が撮像素子を有する場合には、図１５に示すように、光源制御部３５０及び素子制御部３６０は、黒領域及び白領域が市松模様（チェッカーパターン）状に配置されたフレームが表示されるように光源１０及びDMD７０を制御する。外光検出部３７０は、黒領域の明るさ及び白領域の明るさに基づいて、コントラストを検出する。すなわち、外光検出部３７０は、コントラストによって、外光の光量を検出する。 Thirdly, when the external light detection unit 370 has an imaging element, as shown in FIG. 15, the light source control unit 350 and the element control unit 360 have a black area and a white area in a checkered pattern. The light source 10 and the DMD 70 are controlled so that the placed frame is displayed. The external light detection unit 370 detects the contrast based on the brightness of the black area and the brightness of the white area. That is, the outside light detection unit 370 detects the light amount of the outside light by the contrast.
　なお、上述した光源制御部３５０は、外光検出部３７０によって検出された外光の光量に基づいて、光源１０に供給すべき電力を制御する。例えば、光源制御部３５０は、外光の光量が大きい場合に、光源１０に供給すべき電力を増大する。一方で、光源制御部３５０は、外光の光量が小さい場合に、光源１０に供給すべき電力を減少する。 The light source control unit 350 described above controls the power to be supplied to the light source 10 based on the light amount of the external light detected by the external light detection unit 370. For example, the light source control unit 350 increases the power to be supplied to the light source 10 when the amount of external light is large. On the other hand, the light source control unit 350 reduces the power to be supplied to the light source 10 when the amount of external light is small.
　詳細には、光源制御部３５０は、外光検出部３７０によって検出された外光の光量に基づいて、通常電力モードに適用される光源１０の最大光量を制御する。例えば、光源制御部３５０は、外光の光量が大きい場合に、通常電力モードに適用される光源１０の最大光量を増大する。一方で、光源制御部３５０は、外光の光量が小さい場合に、通常電力モードに適用される光源１０の最大光量を減少する。 In detail, the light source control unit 350 controls the maximum light amount of the light source 10 applied to the normal power mode based on the light amount of the external light detected by the external light detection unit 370. For example, the light source control unit 350 increases the maximum light amount of the light source 10 applied to the normal power mode when the light amount of the external light is large. On the other hand, the light source control unit 350 reduces the maximum light amount of the light source 10 applied to the normal power mode when the light amount of the external light is small.
　（作用及び効果）
　変更例１では、光源制御部３５０は、外光検出部３７０によって検出された外光の光量に基づいて、光源１０に供給すべき電力を制御する。従って、投写型映像表示装置１００の周囲の明るさに応じて、適切な電力で光源１０を制御することができる。これによって、必要に応じて、省電力化を図ることができる。 (Action and effect)
In the first modification, the light source control unit 350 controls the power to be supplied to the light source 10 based on the light amount of the external light detected by the external light detection unit 370. Therefore, the light source 10 can be controlled with appropriate power according to the brightness around the projection display apparatus 100. As a result, power saving can be achieved as needed.
　［変更例２］
　以下において、第１実施形態の変更例２について、図面を参照しながら説明する。以下においては、変更例１との相違点について主として説明する。 [Modification 2]
Hereinafter, a modification 2 of the first embodiment will be described with reference to the drawings. In the following, differences from the first modification will be mainly described.
　具体的には、変更例１では、投写型映像表示装置１００は、光源１０から出射される光以外の外光の光量に基づいて、光源１０に供給すべき電力（すなわち、全体の輝度）を制御する。これに対して、変更例２では、投写型映像表示装置１００は、光源１０から出射される光以外の外光の光量に基づいて、投写面に投写される映像の彩度或いは輝度を強調する。 Specifically, in the first modification, the projection display apparatus 100 is configured to supply the power (that is, the overall brightness) to the light source 10 based on the amount of external light other than the light emitted from the light source 10. Control. On the other hand, in the second modification, the projection display apparatus 100 emphasizes the saturation or luminance of the image projected on the projection plane based on the light quantity of the outside light other than the light emitted from the light source 10 .
　具体的には、投写型映像表示装置１００は、外光の光量が大きいほど、彩度或いは輝度の強調量を大きくする。一方で、投写型映像表示装置１００は、外光の光量が小さいほど、彩度或いは輝度の強調量を小さくする。 Specifically, the projection type image display apparatus 100 increases the amount of enhancement of saturation or luminance as the amount of external light is larger. On the other hand, the projection display apparatus 100 reduces the amount of enhancement of saturation or luminance as the amount of external light decreases.
　例えば、投写型映像表示装置１００は、図１６に示すように、彩度を強調する。なお、図１６において、横軸は、彩度（入力）であり、縦軸は、彩度（出力）である。また、点線は、強調前の入出力関係を示しており、実線は、強調後の入出力関係を示している。 For example, as shown in FIG. 16, the projection display apparatus 100 emphasizes saturation. In FIG. 16, the horizontal axis is saturation (input), and the vertical axis is saturation (output). The dotted line indicates the input / output relationship before emphasis, and the solid line indicates the input / output relationship after emphasis.
　このように、投写型映像表示装置１００は、彩度（入力）の全体に亘って彩度（出力）が大きくなるように彩度を強調する。特に、投写型映像表示装置１００は、低彩度（入力）及び中彩度（入力）において、高彩度（入力）よりも彩度を強調することに留意すべきである。 As described above, the projection display apparatus 100 emphasizes the saturation so that the saturation (output) increases over the entire saturation (input). In particular, it should be noted that the projection display 100 emphasizes saturation more than high saturation (input) at low saturation (input) and medium saturation (input).
　なお、彩度の強調量は、上述したように、外光の光量に応じて定められる。 The amount of saturation enhancement is determined according to the amount of external light, as described above.
　或いは、投写型映像表示装置１００は、図１７に示すように、輝度を強調する。なお、図１７において、横軸は、輝度（入力）であり、縦軸は、輝度（出力）である。また、点線は、強調前の入出力関係を示しており、実線は、強調後の入出力関係を示している。 Alternatively, as shown in FIG. 17, the projection display apparatus 100 emphasizes the luminance. In FIG. 17, the horizontal axis is luminance (input), and the vertical axis is luminance (output). The dotted line indicates the input / output relationship before emphasis, and the solid line indicates the input / output relationship after emphasis.
　このように、投写型映像表示装置１００は、低輝度（入力）と高輝度（入力）との間において輝度（出力）の差異が大きくなるように輝度を強調する。例えば、図１８に示すように、輝度（入力）の分布が複数のピークを有する場合には、投写型映像表示装置１００は、輝度（入力）の分布に含まれる複数のピークのそれぞれが高輝度側又は低輝度側にシフトして、輝度（出力）が二極化するように輝度を調整する。或いは、図１９に示すように、輝度（入力）の分布が中輝度に偏っている場合には、投写型映像表示装置１００は、輝度（出力）が全体的に輝度（入力）よりも高輝度側にシフトするように輝度を調整する。或いは、図２０に示すように、輝度（入力）の分布が低輝度に偏っている場合には、投写型映像表示装置１００は、低輝度及び高輝度において、輝度（出力）が二極化するように輝度を調整する。 As described above, the projection display apparatus 100 emphasizes the luminance such that the difference in luminance (output) between low luminance (input) and high luminance (input) becomes large. For example, as shown in FIG. 18, in the case where the distribution of luminance (input) has a plurality of peaks, the projection display apparatus 100 sets each of the plurality of peaks included in the distribution of luminance (input) to high luminance. Shift to the side or low luminance side, and adjust the luminance so that the luminance (output) is bipolarized. Alternatively, as shown in FIG. 19, when the distribution of luminance (input) is biased to middle luminance, the projection display apparatus 100 generally has a higher luminance (output) than the luminance (input). Adjust the brightness to shift to the side. Alternatively, as shown in FIG. 20, when the distribution of luminance (input) is biased to low luminance, the projection display apparatus 100 polarizes the luminance (output) at low luminance and high luminance. To adjust the brightness.
　なお、輝度の強調量は、上述したように、外光の光量に応じて定められる。また、外光の光量を検出する検出部が色毎に外光の光量を検出できる場合には、投写型映像表示装置１００は、輝度の強調を色毎に行ってもよい。 Here, as described above, the emphasis amount of the luminance is determined according to the light amount of the outside light. In addition, when the detection unit that detects the light amount of the external light can detect the light amount of the external light for each color, the projection display apparatus 100 may perform the enhancement of the luminance for each color.
　変更例２において、彩度の強調又は輝度の強調は、素子制御部３６０による信号処理で実現されてもよく、光源制御部３５０による光源制御によって行われてもよい。 In the second modification, enhancement of saturation or enhancement of luminance may be realized by signal processing by the element control unit 360 or may be performed by light source control by the light source control unit 350.
　（作用及び効果）
　変更例２では、投写型映像表示装置１００は、外光の光量に応じて、彩度或いは輝度を強調する。これによって、外光によって生じる映像視認性の低下（白浮きなど）を抑制することができる。 (Action and effect)
In the second modification, the projection display apparatus 100 emphasizes the saturation or the luminance in accordance with the light amount of the external light. As a result, it is possible to suppress a drop in image visibility (such as whitening) caused by external light.
　言い換えると、投写型映像表示装置１００の周囲が明るい環境下において、光源１０の最大光量を増大しなくても、映像視認性が失われることを抑制することができる。 In other words, in an environment where the periphery of the projection display apparatus 100 is bright, loss of image visibility can be suppressed without increasing the maximum light quantity of the light source 10.
　また、外光の光量が大きい状況（明るい状態）において、変更例１に示すように、光源１０の最大光量を減少しても、映像視認性が失われることを抑制することができる。言い換えると、ある程度の映像視認性を維持しながら、省電力化を図ることができる。 Further, as shown in the first modification, it is possible to suppress the loss of the image visibility even if the maximum light amount of the light source 10 is reduced in the situation where the light amount of the external light is large (bright state). In other words, power saving can be achieved while maintaining a certain degree of image visibility.
　［変更例３］
　以下において、第１実施形態の変更例３について、図面を参照しながら説明する。以下においては、変更例１との相違点について主として説明する。 [Modification 3]
Hereinafter, a third modification of the first embodiment will be described with reference to the drawings. In the following, differences from the first modification will be mainly described.
　具体的には、変更例１では、投写型映像表示装置１００は、光源１０から出射される光以外の外光の光量に基づいて、光源１０に供給すべき電力（すなわち、全体の輝度）を制御する。これに対して、変更例３では、投写型映像表示装置１００は、投写面で反射される光に基づいて、色味或いは光量を調整する（いわゆる“壁色補正”）。 Specifically, in the first modification, the projection display apparatus 100 is configured to supply the power (that is, the overall brightness) to the light source 10 based on the amount of external light other than the light emitted from the light source 10. Control. On the other hand, in the third modification, the projection display apparatus 100 adjusts the color or the amount of light based on the light reflected by the projection surface (so-called "wall color correction").
　具体的には、投写型映像表示装置１００は、投写面で反射される光を検出する反射光検出部を有する。反射光検出部は、例えば、投写面を撮像する撮像素子である。また、反射光検出部は、筐体２００の上端に設けられることが好ましい。 Specifically, the projection display apparatus 100 includes a reflected light detection unit that detects light reflected by the projection surface. The reflected light detection unit is, for example, an imaging element that captures an image of a projection plane. Further, the reflected light detection unit is preferably provided on the upper end of the housing 200.
　ここで、投写型映像表示装置１００は、テストパターン画像を投写面に投写して、投写面で反射される光を検出する。投写面で反射される光は、投写面の色及び外光などの影響を受けることに留意すべきである。 Here, the projection display apparatus 100 projects a test pattern image on a projection surface to detect light reflected on the projection surface. It should be noted that the light reflected by the projection surface is affected by the color of the projection surface and the ambient light.
　投写型映像表示装置１００は、投写面で反射される光に基づいて、投写面に投写される映像の色味或いは光量を最適化する。最適化の方法は既知の方法を用いることが可能であるため、その説明については省略する。 The projection display apparatus 100 optimizes the color or the amount of light of the image projected on the projection surface, based on the light reflected by the projection surface. The method of optimization can use a known method, and thus the description thereof is omitted.
　例えば、反射光検出部がモノクロ検出を行うことが可能である場合には、投写型映像表示装置１００は、図２１に示すように、複数の領域（領域＃１－１～領域＃１－４、領域＃２－１～領域＃２－４）毎に輝度が異なる画像をテストパターン画像として表示する。 For example, in the case where the reflected light detection unit can perform monochrome detection, as shown in FIG. 21, the projection display apparatus 100 displays a plurality of regions (region # 1-1 to region # 1-4). Images having different luminances for each of the regions # 2-1 to # 2-4 are displayed as test pattern images.
　詳細には、図２１に示すテストパターン画像において、領域＃１－１～領域＃１－４に向けて各領域の画像の輝度が増大するような画像が表示される。同様に、領域＃２－１～領域＃２－４に向けて各領域の画像の輝度が増大するような画像が表示される。なお、領域＃２－１の画像の輝度は、領域１－４の画像の輝度よりも高い。 Specifically, in the test pattern image shown in FIG. 21, an image is displayed in which the luminance of the image of each area increases toward the area # 1-1 to the area # 1-4. Similarly, an image is displayed in which the luminance of the image of each area increases toward the area # 2-1 to the area # 2-4. Note that the luminance of the image of the area # 2-1 is higher than the luminance of the image of the area 1-4.
　或いは、反射光検出部がカラー検出を行うことが可能である場合には、投写型映像表示装置１００は、図２２に示すように、複数の領域（領域＃１－１～領域＃１－８、領域＃２－１～領域＃２－８、領域＃３－１～領域＃３－８、）毎に輝度が異なる画像をテストパターン画像として表示する。 Alternatively, when the reflected light detection unit can perform color detection, as shown in FIG. 22, the projection display apparatus 100 displays a plurality of areas (area # 1-1 to area # 1-8). Images having different luminances are displayed as test pattern images for each of the regions # 2-1 to # 2-8 and the regions # 3-1 to # 3-8).
　詳細には、図２２に示すテストパターン画像において、領域＃１－１～領域＃１－８には、青系統の画像が表示される。例えば、領域＃１－１～領域＃１－８に向けて各領域の青の輝度が減少するような画像が表示される。また、領域＃２－１～領域＃２－８には、緑系統の画像が表示される。例えば、領域＃２－１～領域＃２－８に向けて各領域の緑の輝度が増大するような画像が表示される。さらに、領域＃３－１～領域＃３－８には、赤系統の画像が表示される。例えば、領域＃３－１～領域＃３－８に向けて各領域の赤の輝度が減少するような画像が表示される。 Specifically, in the test pattern image shown in FIG. 22, blue-line images are displayed in the area # 1-1 to the area # 1-8. For example, an image is displayed in which the blue luminance of each area decreases toward the area # 1-1 to the area # 1-8. In addition, in the area # 2-1 to the area # 2-8, an image of a green system is displayed. For example, an image is displayed in which the green luminance of each area increases toward the area # 2-1 to the area # 2-8. Further, in the area # 3-1 to the area # 3-8, an image of a red system is displayed. For example, an image is displayed in which the red luminance of each area decreases toward the area # 3-1 to the area # 3-8.
　ここで、画角が大きい領域では、画角が小さい領域よりも、検出部によって検出される投写面で反射される光が小さい（暗い）。従って、領域♯１（例えば、青系統）及び領域＃３（例えば、赤系統）の行において輝度が増大する並び順は、領域＃２（例えば、緑系統）の行において輝度が増大する並び順と反対であることが好ましい。すなわち、画角が大きい領域（例えば、領域＃１－１、領域＃２－８、領域＃３－１）において、輝度が大きい領域が含まれる。これによって、輝度が大きい領域が互い違いに配置されるため、投写面で反射される光を適切に検出することができる。 Here, in a region where the angle of view is large, light reflected by the projection surface detected by the detection unit is smaller (darker) than in a region where the angle of view is small. Therefore, the order in which the brightness increases in the rows of area # 1 (for example, blue system) and area # 3 (for example, red system) is the order in which the brightness increases in the row of area # 2 (for example, green system) It is preferable that it is opposite to. That is, in the region where the angle of view is large (for example, region # 1-1, region # 2-8, region # 3-1), the region where the luminance is large is included. As a result, the regions having high luminance are alternately arranged, so that the light reflected by the projection surface can be appropriately detected.
　変更例３において、色味の最適化又は光量の最適化は、素子制御部３６０による信号処理で実現されてもよく、光源制御部３５０による光源制御によって行われてもよい。 In the third modification, optimization of color tone or optimization of light quantity may be realized by signal processing by the element control unit 360 or may be performed by light source control by the light source control unit 350.
　（作用及び効果）
　変更例３では、投写型映像表示装置１００は、投写面で反射される光に基づいて、投写面に投写される映像の色味或いは光量を最適化する。これによって、投写面の色や外光によって生じる映像視認性の低下（色味のアンバランスや白浮きなど）を抑制することができる。 (Action and effect)
In the third modification, the projection display apparatus 100 optimizes the color or the amount of light of the image projected on the projection surface based on the light reflected by the projection surface. As a result, it is possible to suppress a decrease in the image visibility caused by the color of the projection surface and the external light (unbalanced color, whitening, etc.).
　言い換えると、光量が必要とされない環境（例えば、投写面が白く、投写型映像表示装置１００の周囲が暗い環境）下において、映像視認性が失われることを抑制しながら、光源１０の最大光量を減少することができる。 In other words, in an environment where the light amount is not required (for example, an environment in which the projection surface is white and the periphery of the projection display 100 is dark), the maximum light amount of the light source 10 is reduced while suppressing loss of image visibility. Can be reduced.
　また、外光の光量が大きい状況（明るい状態）において、変更例１に示すように、光源１０の最大光量を減少しても、映像視認性が失われることを抑制することができる。言い換えると、ある程度の映像視認性を維持しながら、省電力化を図ることができる。 Further, as shown in the first modification, it is possible to suppress the loss of the image visibility even if the maximum light amount of the light source 10 is reduced in the situation where the light amount of the external light is large (bright state). In other words, power saving can be achieved while maintaining a certain degree of image visibility.
　［変更例４］
　以下において、第１実施形態の変更例４について、図面を参照しながら説明する。以下においては、第１実施形態との相違点について主として説明する。 [Modification 4]
A fourth modification of the first embodiment will be described below with reference to the drawings. In the following, differences from the first embodiment will be mainly described.
　具体的には、変更例４では、投写型映像表示装置１００は、投写面に投写される映像のサイズ（以下、投写サイズ）を検出するサイズ検出部を有する。サイズ検出部は、例えば、投写面を撮像する撮像素子である。サイズ検出部は、筐体２００の上端に設けられることが好ましい。 Specifically, in the fourth modification, the projection display apparatus 100 includes a size detection unit that detects the size of an image to be projected on the projection plane (hereinafter referred to as a projection size). The size detection unit is, for example, an imaging element that captures an image of a projection plane. The size detection unit is preferably provided at the upper end of the housing 200.
　ここで、投写型映像表示装置１００は、投写サイズに基づいて、光源１０に供給すべき電力を制御する。具体的には、投写型映像表示装置１００は、投写サイズが大きい場合に、光源１０に供給すべき電力を増大する。一方で、投写型映像表示装置１００は、投写サイズが小さい場合に、光源１０に供給すべき電力を減少する。 Here, the projection display apparatus 100 controls the power to be supplied to the light source 10 based on the projection size. Specifically, the projection display apparatus 100 increases the power to be supplied to the light source 10 when the projection size is large. On the other hand, the projection display apparatus 100 reduces the power to be supplied to the light source 10 when the projection size is small.
　詳細には、投写型映像表示装置１００は、投写サイズに基づいて、通常電力モードに適用される光源１０の最大光量を制御する。例えば、投写型映像表示装置１００は、投写サイズが大きい場合に、通常電力モードに適用される光源１０の最大光量を増大する。一方で、投写型映像表示装置１００は、投写サイズが小さい場合に、通常電力モードに適用される光源１０の最大光量を減少する。 Specifically, the projection display apparatus 100 controls the maximum amount of light of the light source 10 applied to the normal power mode based on the projection size. For example, when the projection size is large, the projection display apparatus 100 increases the maximum light quantity of the light source 10 applied to the normal power mode. On the other hand, when the projection size is small, the projection display apparatus 100 reduces the maximum light quantity of the light source 10 applied to the normal power mode.
　なお、光源１０の最大光量は、変更例１と同様に、光源制御部３５０によって行われることは勿論である。 As a matter of course, the maximum light quantity of the light source 10 is performed by the light source controller 350 as in the first modification.
　（作用及び効果）
　変更例４では、投写型映像表示装置１００は、投写サイズに基づいて、光源１０に供給すべき電力を制御する。従って、投写サイズに必要な光量に応じて、適切な電力で光源１０を制御することができる。これによって、必要に応じて、省電力化を図ることができる。 (Action and effect)
In the fourth modification, the projection display apparatus 100 controls the power to be supplied to the light source 10 based on the projection size. Therefore, the light source 10 can be controlled with appropriate power according to the amount of light necessary for the projection size. As a result, power saving can be achieved as needed.
　［その他の実施形態］
　本発明は上述した実施形態によって説明したが、この開示の一部をなす論述及び図面は、この発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施形態、実施例及び運用技術が明らかとなろう。 Other Embodiments
Although the present invention has been described by the embodiments described above, it should not be understood that the descriptions and the drawings that form a part of this disclosure limit the present invention. Various alternative embodiments, examples and operation techniques will be apparent to those skilled in the art from this disclosure.
　実施形態では、光変調素子として、ＤＭＤ（Ｄｉｇｉｔａｌ　Ｍｉｃｒｏｍｉｒｒｏｒ　Ｄｅｖｉｃｅ）を例示したに過ぎない。光変調素子は、反射型の液晶パネルであってもよい。 In the embodiment, only the DMD (Digital Micromirror Device) is illustrated as the light modulation device. The light modulation element may be a reflective liquid crystal panel.
　実施形態では、主として、複数種類の処理内容を実行可能なケースについて例示したに過ぎない。具体的には、１種類の処理内容のみが実行可能であってもよい。 In the embodiment, mainly, a plurality of types of processing contents are illustrated only for executable cases. Specifically, only one type of processing content may be executable.
　実施形態では、特定領域と処理内容とが対応付けられており、インタラクティブ操作を実現するケースについて例示した。しかしながら、実施形態は、これに限定されるものではない。すなわち、特定領域は、省電力モードの解除にのみ用いられてもよい。このようなケースでは、特定領域は、投写領域の全域であってもよく、投写領域よりも広い領域であってもよい。 In the embodiment, the specific area and the processing content are associated with each other, and the case where the interactive operation is realized is illustrated. However, the embodiments are not limited to this. That is, the specific area may be used only for canceling the power saving mode. In such a case, the specific area may be the entire area of the projection area, or may be an area larger than the projection area.
　実施形態では、検出部３２０及び外光検出部３７０が別々の構成であるケースについて例示した。しかしながら、実施形態は、これに限定されるものではない。具体的には、外光検出部３７０に設けられる撮像素子又は照度センサとして、検出部３２０を用いてもよい。 In the embodiment, the case where the detection unit 320 and the external light detection unit 370 have different configurations is illustrated. However, the embodiments are not limited to this. Specifically, the detection unit 320 may be used as an imaging element or an illumination sensor provided in the external light detection unit 370.
　実施形態では、検出部３２０が撮像素子又は照度センサであるケースについて例示した。しかしながら、実施形態は、これに限定されるものではない。例えば、特定領域に赤外光が照射されている場合には、検出部３２０は、赤外線センサであってもよい。 In the embodiment, the case where the detection unit 320 is an imaging device or an illumination sensor is illustrated. However, the embodiments are not limited to this. For example, when infrared light is irradiated to the specific area, the detection unit 320 may be an infrared sensor.
　１０…光源、３０…ダイクロイックプリズム、４０…ロッドインテグレータ、５１～５２…ミラー、６１～６３…レンズ、７０…DMD、８０…反射プリズム、１００…投写型映像表示装置、１１０…投写光学系、１１１…投写レンズ群、１１２…反射ミラー、１２０…照明光学系、１３０…冷却ファン、１４０…バッテリ、１５０…電源基板、１６０…主制御基板、１７０…操作基板、２００…筐体、２００Ａ…第１筐体、２００Ｂ…第２筐体、２１０…透過領域、３００…制御ユニット、３１０…記憶部、３２０…検出部、３３０…指示部、３４０…モード制御部、３５０…光源制御部、３６０…素子制御部、３７０…外光検出部 DESCRIPTION OF SYMBOLS 10 ... Light source, 30 ... Dichroic prism, 40 ... Rod integrator, 51-52 ... Mirror, 61-63 ... Lens, 70 ... DMD, 80 ... Reflection prism, 100 ... Projection type image display apparatus, 110 ... Projection optical system, 111 ... projection lens group, 112 ... reflection mirror, 120 ... illumination optical system, 130 ... cooling fan, 140 ... battery, 150 ... power supply substrate, 160 ... main control substrate, 170 ... operation substrate, 200 ... housing, 200 A ... first Case 200B: second case 210: transmission area 300: control unit 310: storage unit 320: detection unit 330: instruction unit 340: mode control unit 350: light source control unit 360: element Control unit, 370 ... ambient light detection unit

Claims (9)

  1. 　光源から出射される光を変調する光変調素子と、前記光変調素子から出射される光を投写面上に投写する投写光学系とを備える投写型映像表示装置であって、
    　前記投写面上に設定された特定領域において光を遮光する物体を検出する検出部と、
    　所定条件が満たされた場合に、動作モードを省電力モードに移行するモード制御部とを備え、
    　前記モード制御部は、前記省電力モードにおいて、前記特定領域において光を遮光する物体の検出に応じて、動作モードを通常電力モードに移行することを特徴とする投写型映像表示装置。     A projection type video display apparatus comprising: a light modulation element that modulates light emitted from a light source; and a projection optical system that projects light emitted from the light modulation element onto a projection surface,
    A detection unit that detects an object that blocks light in a specific area set on the projection surface;
    And a mode control unit that shifts the operation mode to a power saving mode when a predetermined condition is satisfied.
    The projection type video display apparatus, wherein the mode control unit shifts the operation mode to the normal power mode in the power saving mode in response to the detection of an object that blocks light in the specific area.
  2. 　前記光源を制御する光源制御部をさらに備え、
    　前記光源制御部は、前記省電力モードにおいて、前記通常電力モードと比べて、前記光源に供給すべき電力を減少することを特徴とする請求項１に記載の投写型映像表示装置。     It further comprises a light source control unit for controlling the light source,
    The projection display apparatus according to claim 1, wherein the light source control unit reduces the power to be supplied to the light source in the power saving mode as compared to the normal power mode.
  3. 　前記光源を制御する光源制御部をさらに備え、
    　前記光源制御部は、前記省電力モードにおいて、前記通常電力モードと比べて、１フレーム内において前記光源が発光する期間を減少することを特徴とする請求項１に記載の投写型映像表示装置。     It further comprises a light source control unit for controlling the light source,
    The projection display apparatus according to claim 1, wherein the light source control unit reduces a light emission period of the light source in one frame in the power saving mode as compared with the normal power mode.
  4. 　前記光変調素子を制御する素子制御部をさらに備え、
    　前記光変調素子は、複数の微小ミラーが電圧の印加によって駆動する反射型素子であり、
    　前記素子制御部は、前記省電力モードにおいて、前記複数の微小ミラーのうち、少なくとも１つの微小ミラーに電圧を印加せずに、他の微小ミラーに電圧を印加することを特徴とする請求項１に記載の投写型映像表示装置。     The device further includes an element control unit that controls the light modulation element.
    The light modulation element is a reflective element in which a plurality of micro mirrors are driven by application of a voltage,
    In the power saving mode, the element control unit applies a voltage to another micro mirror without applying the voltage to at least one of the plurality of micro mirrors. The projection type video display device as described in.
  5. 　前記モード制御部は、前記省電力モードにおいて、装置本体に設けられる操作部の操作に応じて、動作モードを前記通常電力モードに移行することを特徴とする請求項１に記載の投写型映像表示装置。 The projection type video display according to claim 1, wherein the mode control unit shifts the operation mode to the normal power mode in the power saving mode according to an operation of an operation unit provided in the apparatus main body. apparatus.
  6. 　前記光源を制御する光源制御部と、
    　前記光源から出射される光以外の外光の光量を検出する外光検出部とをさらに備え、
    　前記光源制御部は、前記外光検出部によって検出された外光の光量に基づいて、前記光源に供給すべき電力を制御することを特徴とする請求項１に記載の投写型映像表示装置。     A light source control unit that controls the light source;
    And an external light detection unit that detects the amount of external light other than the light emitted from the light source,
    The projection type video display apparatus according to claim 1, wherein the light source control unit controls the power to be supplied to the light source based on the light amount of the external light detected by the external light detection unit.
  7. 　前記光源を制御する光源制御部と、
    　前記光源から出射される光以外の外光の光量を検出する外光検出部とをさらに備え、
    　前記素子制御部及び前記光源制御部の少なくとも一方は、前記外光検出部によって検出された外光の光量に基づいて、前記投写面に投写される映像の彩度又は輝度を強調することを特徴とする請求項１に記載の投写型映像表示装置。     A light source control unit that controls the light source;
    And an external light detection unit that detects the amount of external light other than the light emitted from the light source,
    At least one of the element control unit and the light source control unit is characterized by emphasizing the saturation or the luminance of the image projected on the projection plane based on the light amount of the external light detected by the external light detection unit. The projection type video display apparatus according to claim 1.
  8. 　前記光源を制御する光源制御部と、
    　前記投写面で反射される光を検出する反射光検出部とをさらに備え、
    　前記素子制御部及び前記光源制御部の少なくとも一方は、前記反射光検出部によって検出された光に基づいて、前記投写面に投写される映像の色味又は光量を最適化することを特徴とする請求項１に記載の投写型映像表示装置。     A light source control unit that controls the light source;
    And a reflected light detection unit that detects light reflected by the projection surface,
    At least one of the element control unit and the light source control unit optimizes the color or the light amount of the image projected on the projection plane based on the light detected by the reflected light detection unit. The projection type video display apparatus of Claim 1.
  9. 　前記光源を制御する光源制御部と、
    　前記投写面に投写される映像のサイズを検出するサイズ検出部とをさらに備え、
    　前記光源制御部は、前記サイズ検出部によって検出された映像のサイズに基づいて、前記光源に供給すべき電力を制御することを特徴とする請求項１に記載の投写型映像表示装置。     A light source control unit that controls the light source;
    And a size detection unit that detects the size of the image projected on the projection plane,
    The projection display apparatus according to claim 1, wherein the light source control unit controls the power to be supplied to the light source based on the size of the image detected by the size detection unit.
PCT/JP2011/052912 2010-02-24 2011-02-10 Projection image display device WO2011105228A1 (en)

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