JP7312785B2 - video display system - Google Patents

Description

The present invention relates to an image display system that projects and displays an image onto a target surface.

An image display apparatus including a projector that projects a starry sky image, which is an image including a plurality of celestial bodies corresponding to the original plate, onto the target surface by irradiating the target surface with light emitted from a light source and transmitted through an original plate or a film, and a projector that projects a digital image, which is an image including a moving image or a still image, onto the target surface is known (see, for example, Patent Document 1).

According to the image display device of the above-mentioned document, digital images including moving images and still images, which cannot be reproduced with only a master plate or film, can be projected onto a target surface, thereby widening the range of expression.

By the way, it is preferable that the projector can be used for general purposes because of its versatility. In this case, only the digital image projected from the projector is projected onto the target surface (projector projection mode), but depending on the content of the still image or moving image related to the digital image, it may be better to switch to the state of projecting the digital image and the starry sky image onto the same target surface (double projection mode).

However, it is troublesome to manually switch the video display device between the projector projection mode and the double projection mode according to the content of the still image or moving image related to the digital image. For example, in order to manually switch the image display device installed at a position other than the viewing position where the image projected on the target surface is visible to the projector projection mode or the double projection mode, it is necessary to go back and forth between the viewing position and the image display device, which is troublesome.

In order to avoid such a situation, it is conceivable to install the video display device at a viewing position or to assign personnel who specialize in the switching operation to the video display device. However, the former method greatly limits the installation range of the video display device, and in some cases there is concern that the quality of the video projected onto the target surface may be affected.

Japanese Patent Application Laid-Open No. 2007-333870

It is an object of the present invention to provide a video display system capable of easily switching a video display device having a projector for projecting a starry sky and a projector for projecting a digital image between a double mode in which both the starry sky image and the digital image are projected onto a target plane and a projector projection mode in which only the digital image is projected onto the target plane according to the content of a still image or a moving image related to the digital image.

In order to solve the above-mentioned problems, there is provided a video display system for projecting and displaying an image on a target surface, the video display device having a projector for projecting a starry sky image, which is a video including a plurality of celestial bodies corresponding to the target plate, onto the target surface by irradiating the target surface with light emitted from a light source and transmitted through an original plate or a film; a storage unit storing a plurality of pieces of certain content data, wherein the storage unit stores at least one piece of starry sky-related content data, which is content data capable of projecting the digital image together with the starry sky image onto the target surface in a starry sky projection time period, which is at least a part of the entire time period during which the digital image is projected onto the target surface, to form a single video; The information terminal has a projection mode and a double projection mode in which both the starry sky image and the digital image are projected onto the target surface, and the information terminal has selection operation means for selecting the content data from the storage unit, and when the content data selected by the selection operation means is the starry sky-related content data and the timing at which the digital image related to the starry sky-related content data is projected onto the target surface is during the starry sky projection time period, the video display device is automatically switched to the double projection mode while the selection operation means. The information terminal or the image display device is provided with projection mode switching means for switching the image display device to the projector projection mode when the selected content data is not the starry sky-related content data.

The projector may have a normal mode in which the digital image is projected on a normal range that is a part of the target surface when the image display device is switched to the projector projection mode or the double projection mode, and an enlargement mode that projects the digital image on an enlarged range that is part or all of the target surface and is wider than in the normal mode.

Content data relating to a moving image or a plurality of still images including the digital image whose projection range is only the normal range and the digital image whose projection range is the entire enlarged range, and content data with a display mode switching function that automatically switches between the normal mode and the enlarged mode by reproducing the moving picture or reproducing the plurality of still images sequentially projected may be stored in the storage unit as the content data.

The projector may be provided with a projection range changing section for changing and controlling a range of projection from the projector onto the target surface, and the projector or the information terminal may be provided with display mode switching means for switching from one of the normal range and the enlarged range to the other or vice versa by the projection range changing section according to the content data.

The storage unit may be provided in the information terminal or the image display device, or may be provided in a server capable of communicating with the information terminal or the image display device.

The entire time period during which a digital image is projected onto the target surface is defined as the starry sky projection time period, and the projection mode switching means automatically switches the image display device to the double projection mode when the content data selected by the selection operation means is the starry sky-related content data, and switches the image display device to the projector projection mode when the content data selected by the selection operation means is not the starry sky-related content data.

A part of the time period during which the digital image is projected onto the target surface may be the starry sky projection time period, and the projection mode switching means may switch the image display device to the projector projection mode even when the content data selected by the selection operation means is the starry sky-related content data and the timing at which the digital image related to the starry sky-related content data is projected onto the target surface is a time period other than the starry sky projection time period.

In the double projection mode, the image display device may be provided with synchronous display means for synchronizing and displaying the starry sky image projected by the projector and the digital image projected by the projector on the target surface.

Since the video display device is automatically switched to the double mode or the projector projection mode in accordance with the contents of the content data selected by the information terminal capable of communicating with the video display device, switching is not required.

1 is a schematic diagram showing an overview of a video display system to which the present invention is applied; FIG. 1 is a block diagram showing the configuration of a video display device; FIG. FIG. 3 is an explanatory diagram illustrating a state of projection from a video display device onto a target surface; 1 is a front view of a video display device; FIG. It is a rear view of a video display apparatus. 1 is a front perspective view of an image display device; FIG. FIG. 4 is a rear perspective view of the image display device with the cover lid removed; FIG. 3 is a plan view of the image display device with the cover lid removed; It is a top view of a storage tray. 1 is a plan view of a stellar plate, which is a kind of image depiction object; FIG. 1 is a block diagram showing the configuration of an information terminal; FIG. It is a block diagram which shows the structure of a server. FIG. 10 is a flow diagram showing the procedure of content reproduction processing;

FIG. 1 is a schematic diagram showing an outline of an image display system to which the present invention is applied, FIG. 2 is a block diagram showing the configuration of the image display device, and FIG. The image display system includes an image display device 1 that projects an image onto a flat target surface M (see FIGS. 2 and 3) formed on a screen, a white wall surface, a ceiling surface, or the like, an information terminal 70 that can communicate with the image display device 1, and a server 90 that holds various data and can communicate with the image display device 1 and the information terminal 70 via a global network 80 such as the Internet, and can be used as a home planetarium.

The image display device 1 includes a projector 2 that projects a digital image, which is an image including a still image or a moving image, onto the target surface M, a projector 3 that projects a starry sky image including a plurality of celestial bodies (stars) onto the target surface M, and a control unit 4 in which a CPU, a RAM, a ROM, and other storage media are unitized and controls the projector 2, the projector 3, and the like.

The projector 2 includes a video signal processing unit 6 connected to the output side of the control unit 4, a light source 7 connected to the output side of the control unit 4, an image generation unit 8 that optically generates a digital image by light from the light source 7 based on the video signal from the video signal processing unit 6, and a projector-side lens 9 that is a lens that enlarges and projects the digital image generated by the image generation unit 8 onto the target surface M.

The video signal processing unit 6 is controlled by the control unit 4 so as to generate a video signal corresponding to the moving image or still image of the digital image to be displayed on the target surface M. The processing by the control unit 4 is digital image display processing for displaying a digital image related to a moving image or a still image on the target plane M. FIG. Content data, which is data of moving images or still images to be subjected to the digital image display processing, is acquired from the storage unit 11 itself, or acquired from the information terminal 70 or the server 90 .

Incidentally, still image data, which is a type of content data, also includes slide data for sequentially projecting (displaying) and reproducing a plurality of different continuous still images on the target surface M in a predetermined order at a predetermined timing. The slide data naturally includes information for reproduction such as the display order and timing.

The light source 7 is configured to emit light containing a wide range of wavelength components, and its brightness is controlled by the controller 4, including turning it on and off. The image generator 8 optically converts the light from the light source 7 into a digital image, and the optical structure differs depending on whether the system of the projector 2 is a transmissive liquid crystal system (LCD), a reflective liquid crystal system (LCOS), or a DLP system.

The projector 2 of the present embodiment is further provided with a video signal input unit 12 to which a video signal corresponding to the monitor screen is inputted from an information terminal or other computer by wire, a video signal output unit 13 to output the video signal related to the digital image displayed on the target surface M to another monitor by wire, and a projection range changing unit (projection range changing means) 14 to change the projection range, which is the range in which the digital image is projected onto the target surface M.

The video signal input through the video signal input unit 12 is sent to the video generation unit 8 after undergoing predetermined processing such as noise removal by the video signal processing unit 6, or is sent to the video generation unit 8 as it is. Incidentally, the monitor screen, which is a digital image generated based on the video signal input via the video signal input unit 12, is a screen displayed on a touch panel such as a smartphone constituting the information terminal 70, or a screen displayed on a computer monitor.

The video signal output unit 13 receives the video signal from the video signal processing unit 6 and outputs the video signal to an external monitor by wire.

In addition, the information terminal 70 may transmit the screen displayed on itself to the video display device 1 as content data relating to still images or moving images that form the monitor screen. Upon receiving this content data from the information terminal 70 , the control unit 4 executes the digital image display processing on the still image or moving image related to the content data, and projects the monitor screen onto the target surface M. That is, the information terminal 70 is configured to be capable of executing a monitor screen providing process for providing the screen displayed on its own screen to the video display device 1 as content data related to the monitor screen composed of still images or moving images. In other words, digital images include those relating to still or moving images as well as those relating to monitor screens.

The projection range changing unit 14 is configured to switch the projection range in at least two stages. Specifically, the projection range is switched between two stages, an enlarged range R1 that is the maximum range and a normal range R2 that is reduced on both the left and right sides of the maximum range.

That is, the projector 2 has at least two display modes: a normal mode for projecting a normal-sized digital image, which is a normal-sized digital image, only on the normal range R2 of the target plane M, and an enlarged mode for projecting an enlarged digital image, which is a digital image larger than the normal size, on the entire enlarged range R1 of the target plane M.

In this example, the projection range changing unit 14 is provided separately from the image generating unit 8 and connected to the output side of the control unit 4, but the image generating unit 8 itself may be provided with the function of the projection range changing means. Moreover, if unnecessary, one or both of the video signal input unit 12 and the video signal output unit 13 may be omitted.

The projector 3 includes a light source 16 connected to the output side of the control unit 4, a plate-like image depiction body 17 which is an original plate or a film on which a starry sky image to be projected onto the target surface M is fixedly drawn, a projector-side lens 18 which is a lens for expanding and projecting the light emitted from the light source 16 and transmitted through the image depiction body 17 to a normal range R2 of the target plane M, and an actuator which rotationally drives the image depiction body 17 to change the starry sky image projected onto the normal range R2 of the target plane M. and a motor 19 which is

Although the projection range of the starry sky image by the projector 3 is set to the normal range R2, it may be set to the enlarged range R1.

The brightness of the light source 16 can be controlled by the controller 4, including turning it on and off. The image depicter 17 is a circular shaped stellar plate in this example. The fixed star original plate 17 is constructed by drilling a large number of holes corresponding to fixed stars in a disk having a light-shielding property, with a size corresponding to the brightness of the fixed stars. The starry sky image (projected starry sky image) projected onto the target plane M is a part of all the starry sky images (total projected starry sky image) drawn on the fixed star plate 17, and the projected starry sky image is appropriately changed according to factors such as season, direction, and time zone.

In the illustrated example, the light source 7 and the light source 16 are provided separately, but they may be shared with each other and a single light source may be used. In this case, it is necessary to provide a mechanism for opening and closing the optical path from the light source to the image generating section 8 and a mechanism for opening and closing the optical path from the light source to the image rendering body 17 .

The input side of the control section 4 is connected to an operation section 21 for performing various operations and a rotation sensor 22 which is a rotational position detecting means for detecting the rotational position of the image depiction body 17. The output side of the control section 4 is connected to the video signal processing section 6, the two light sources 7 and 16, the motor 19, and a speaker 23.

The operation unit 21 is provided with digital image on/off means 21a for switching whether or not the projector 2 projects a digital image onto the target surface M, starry sky image on/off means 21b for switching whether or not the projector 3 projects a starry sky image on the target surface M, and diurnal motion on/off means 21c for switching whether to express the diurnal motion of the starry sky by the motor 19.

In addition, to the control unit 4, the storage unit 11 and a wireless communication interface 24, which is communication means that enables direct wireless communication between the video display device 1 and the information terminal 70 and also enables communication with the server 90 via the network 80, are connected in an input/output manner.

The control unit 4 includes a digital image display unit 4c that executes the digital image display process, a setting unit 4a that executes various setting processes including an initial setting process of the video display device 1, a projection mode switching unit 4b that executes a projection mode switching process described later, a starry sky image display unit 4d that executes a starry sky image display process that will be described later, a synchronous display unit 4e that executes a synchronous display process that will be described later, and a display mode switching unit 4f that executes the display mode switching process described later.

In the initial setting process, still image content data relating to an initial setting screen, which is a kind of digital image, is read out from the content data storage area 11a secured in the storage unit 11 and storing a plurality of the content data, and the initial setting screen relating to the content data is projected onto the target surface M by the digital image display means 4c.

The initial setting screen projected on the target surface M includes connection information (for example, SSID and encryption key for connecting the information terminal 70 to the video display device 1 via a wireless LAN), which is information for connecting the information terminal 70 to the video display device 1 via a wireless LAN or the like. After the video display device 1 and the information terminal 70 are communicably connected, the information terminal 70 performs settings for the video display device 1 so that the video display device 1 can communicate with the server 90 via the network 80, and also performs various other settings.

In the projection mode switching process, the projecting mode of the video display device 1 is projected mode of the video display device 1 according to the operation of the digital image immersion means 21a and the starry sky image immutable means 21b, and the setting operation from the information terminal 70, and the projector 2 projects only the digital image on the target surface M, and the implication machine 3 by the projector. Switch to one of the projection mode that projected only the starry sky image on the target surface M, and the double projection mode, which projects a video with a duplicated digital image and starry sky image on the projector 2 and the projection machine 3.

Further, in the projection mode switching process, switching to a non-projection mode in which neither the digital image nor the starry sky image is projected onto the target plane M may be performed depending on the case. Specifically, it is possible to switch to the non-projection mode when the digital image on/off unit 21a is turned off and the starry sky image on/off unit 21b is turned off at the same time.

In the starry sky image display process, ON/OFF control and brightness control of the light source 7 are performed, and when it is selected to express the diurnal motion by operating the diurnal motion ON/OFF means 21c or by operating the information terminal 70, or in other cases, the starry sky image (image depiction body 17) projected onto the target surface M is rotated at a predetermined rotational speed by a predetermined amount by the motor 19 while checking the detection result of the rotation sensor 22.

In the synchronous display process, control is performed via the digital image display means 4c and the starry sky image display means 4d so that the digital image projected onto the target plane M from the projector 2 is synchronized with the starry sky image projected onto the target plane M from the projector 3 and the position of each celestial body is controlled by the motor 19 and the rotation sensor 22 for the purpose of displaying the intended predetermined image on the target plane M by projecting the digital image and the starry sky image onto the target plane M in overlap.

In the display mode switching process, the display mode of the projector 2 is switched between the enlargement range and the normal range of the projection range of the digital image in accordance with the content data relating to the moving image or the still image. The switching of the display mode may be performed for each playback with the processing of displaying all the digital images related to one piece of content data on the target surface M for a predetermined period of time as one playback, or may be switched at a plurality of timings during one playback.

The image display device 1 configured in this manner is integrally formed as a whole by positioning and accommodating the projector 2, the projector 3, most of the control unit 4, and at least some of the various other members described above inside housings (housings) 26 and 27 (see FIGS. 4 to 8).

4 to 6 are a front view, a rear view and a front perspective view of the image display device, and FIGS. 7 and 8 are a rear perspective view and a plan view of the image display device with the cover removed. The image display device 1 includes, as the housings 26 and 27, a first housing 26 and a second housing 27 supporting the first housing 26 from below so as to be vertically swingable.

The first housing 26 integrally includes a cylindrical peripheral wall portion 28, a bottom cover portion 29 that covers and covers the lower side of the peripheral wall portion 28, and a ceiling cover portion 31 that covers and covers the upper side of the peripheral wall portion 28. Incidentally, up and down and front and back are hereinafter defined based on the attitude of the first housing 26 with the ceiling cover portion 31 facing straight up, unless otherwise specified.

The outer peripheral surface of the bottom lid portion 29 is formed with a curved R surface 29a whose diameter gradually decreases downward over the entire circumference.

Since the upper end of the peripheral wall portion 28 is formed at a position higher than the ceiling cover portion 31 , the upper end portion of the peripheral wall portion 28 surrounds the ceiling cover portion 31 on all four sides. Further, a portion near the upper end of the outer peripheral surface of the peripheral wall portion 28 is formed with an R surface 28a, which is curved so that the diameter gradually decreases upward, over the entire circumference.

An upper surface of the ceiling cover portion 31 serves as an irradiation surface 32 facing the target surface M. As shown in FIG. The irradiation surface 32 is composed of a single flat surface 32a which is a circular flat surface in plan view, and a circular ring-shaped outer edge-side surface 32b having a center at the same position as the flat surface 32a so as to surround the flat surface 32a in plan view.

The outer edge-side surface 32b may be configured as an R surface that curves downward radially outward from the flat surface 32a or a curved surface that bulges upward, or may be configured as an inclined surface that slopes downward radially outward from the flat surface 32a.

Exposure holes 31a and 31b for exposing the two lenses 9 and 18 fixed inside the first housing 26 to the outside are formed in the portion of the ceiling cover portion 31 where the flat surface 32a is formed (the outer surface of the first housing 26). That is, the light emitted from the flat surface 32a of the irradiation surface 32 of the first housing 26 is projected onto the target surface M as a digital image or a starry sky image.

More specifically, an exposure hole 31a for exposing the projector-side lens 9 to the outside is arranged together with the projector-side lens 9 at a position near the rear end of the irradiation surface 32 (flat surface 32a) in plan view.

Two symmetrical arcuate regions on the outer edge-side surface 32b are defined as heat radiation regions R3, R3 for discharging the heat inside the first housing 26 to the outside. In each heat radiation region R3, a plurality of long hole-shaped heat radiation holes 31c extending along the radial direction of the ceiling cover portion 31 are drilled in parallel in the circumferential direction of the outer edge side surface 32b. In a plan view, a virtual straight line X connecting the center of the projector-side lens 9 and the center of the projector-side lens 18 and a virtual straight line Y connecting the centers of the pair of heat dissipation regions R3, R3 are perpendicular to each other at the center of the ceiling cover part 31.

On the upper end side of the first housing 26, a cover lid 36 made of a translucent material (more specifically, a transparent or translucent material) and having a concave shape with an open bottom is detachably attached. The cover lid 36 is formed in the same circular shape as the peripheral wall portion 28 in plan view, and is formed with an R surface 36a curved so that the diameter gradually decreases upward.

When the cover lid 36 is attached to the first housing 26, the upper side of the recessed space formed on the upper end side of the first housing 26 is closed, and the two lenses 9 and 18 are also covered and protected from above. In this state, the R surface 36a of the cover lid 36 and the R surface 28a of the peripheral wall portion 28 form a continuous R surface.

Around the first housing 26, there are provided a storage tray (storage section) 37 which is arranged on the front side (more specifically, the front side) and stores the image drawing body 17 in a detachable manner; a projector side focus adjustment dial (focus adjustment section) 38 which is arranged above the storage tray 37 and adjusts the focus of the projector side lens 18; are Further, the above-described operation unit 21 is provided on the lower surface side of the first housing 26 .

The second housing 27 integrally has a disk-shaped body portion 41 and support stay portions 42 that protrude upward from left and right ends of the upper surface of the body portion 41 . The main body portion 41 and the support stay portion 42 are formed in a hollow shape, and the interior thereof serves as an installation space for installing various parts and also as a wiring space.

At least a portion of the power supply circuit 43 and the pair of left and right speakers 23 , 23 are housed in the main body 41 . Output units 44 , 44 are provided on the upper surface of the main body 41 for outputting sounds from the left and right speakers 23 , 23 to the outside of the main body 41 . Each output portion 44 is composed of a plurality of output holes drilled in a circular range. Incidentally, an external output terminal 46 for outputting an audio signal from the control section 4 to an earphone or the like is provided on the front side of the illustrated second housing 27 .

The power supply circuit 43 includes an insertion port (connecting portion) 43a arranged on the back side of the main body portion 41 and into which a plug on the tip side of a cord extending from the AC adapter is inserted, and a power switch 43b which is arranged on the back side of the main body portion 41 and is a power on/off operation tool for switching whether power is supplied to the entire video display device 1 by the power supply circuit 43.

The first housing 26 is supported between the left and right support stay portions 42 , 42 so as to be vertically swingable by a support shaft 47 formed in a hollow cylindrical shape extending in the left-right direction. That is, the support shaft 47 functions as a swing shaft for the first housing 26 . By this up-and-down swing, the first housing 26 can be rotated forward and backward by 1/4 turn or more from the basic posture in which the irradiation surface 32 is directed upward. That is, the vertical swing angle of the first housing 26 may be set so that the irradiation surface 32 faces the target surface M.

The electronic components arranged inside the first housing 26 and the electronic components arranged inside the second housing 27 are electrically connected by wire via the space inside the support stay portion 42 and the space inside the support shaft 47.

The electronic components arranged inside the first housing 26 include, for example, the control unit 4, the video signal processing unit 6, the light sources 7 and 16, the video generation unit 8, the storage unit 11, the projection range changing unit 14, the motor 19, the operation unit 21, the rotation sensor 22, the wireless communication interface 24, and the like. Examples of the electronic components arranged inside the second housing 27 include the power supply circuit 43, the speaker 23, and the like.

FIG. 9 is a plan view of a storage tray, and FIG. 10 is a plan view of a stellar plate, which is a type of image depiction medium. An insertion portion (not shown) into which the storage tray 37 is detachably inserted is formed on the front side of the outer peripheral surface of the first housing 26 . On the other hand, the storage tray 37 integrally has an insertion portion 48 which is inserted into the insertion portion and in which the stellar original plate 17 is positioned and set on the upper surface side, and a lid portion 49 formed in an arcuate shape so as to close the insertion portion and constitute a part of the outer peripheral surface of the first housing 26.

On the outer surface side of the lid portion 49, a knob portion 49a is formed to make it easier to pull out the insertion portion from the insertion portion. The stellar original plate 17 can be set in the insertion portion 48 pulled out from the inserted portion of the first housing 26, and the set stellar original plate 17 can be removed from the insertion portion 48.例文帳に追加By the way, according to the above-described configuration, the pull-out direction is set to the rear side and the insertion direction is set to the front direction.

The insertion portion 48 includes a pair of left and right support portions 51, 51 for supporting the front side portion of the star plate 17, a pair of left and right support portions 51, 51 for supporting the back side portion of the star plate 17, a single front side restricting portion 52 formed in an arc shape along the peripheral edge of the star plate 17 at the front side thereof and restricting movement in the pull-out direction, and a rear side portion along the peripheral edge of the star plate 17 in plan view. A pair of left and right back side regulating portions 53, 53 formed in an arcuate concave shape and restricting the movement of the stellar master plate 17 in the insertion direction, and a pair of left and right upper regulating portions 54, 54 restricting upward movement by approaching or coming into contact with the upper surface of the far side portion of the stellar master plate 17 arranged in a predetermined position while being restricted from moving in four directions by these three regulating portions 52, 53, 53, are integrally provided. .

The left and right back side regulating portions 53 , 53 are formed in mutually symmetrical shapes, and also regulate the left and right movement of the star original plate 17 . The upper restricting portion 54 is shaped like a claw and integrally protrudes forward from the upper portion of the inner restricting portion 53 .

The star original plate 17 is rotatably positioned and supported on the upper surface side of the insertion portion 48 by four support portions 51 , 51 , 51 , 51 and three types of restriction portions 52 , 53 , 54 .

A scale 52a is displayed by printing or the like on the upper surface of the front-side restricting portion 52, while a scale 17a is also displayed by printing or the like on the upper surface of the star original plate 17. FIG. By visually observing these scales 17a and 52a, the rotational position of the fixed star plate 17 can be appropriately changed according to the date and time.

Further, the insertion portion 48 is provided with an exposure hole 48a that exposes the star plate 17 to the space directly below the insertion portion 48 so that the light from the light source 7, which is arranged directly below the insertion portion 48 and whose irradiation direction is directed upward (right above) in the axial direction of the first housing 26, reaches the lower surface of the star plate 17 and further passes through the star plate 17.

FIG. 11 is a block diagram showing the configuration of an information terminal. The information terminal 70 comprises a control unit 71 which is composed of a CPU, a RAM, etc., and which can implement various functions by executing a program; a storage unit 72, which is composed of an SSD or an HDD or the like and stores various kinds of information; a global wireless communication interface (communication means) 73 which is directly connected to the network 80 by wirelessly communicating with a plurality of base stations installed so as to cover a wide range; It is provided with a wireless communication interface (communication means) 74 and a touch panel type liquid crystal screen 75 which includes a display device such as a liquid crystal screen and serves as information output means and information input means.

The information terminal 70 can communicate with the server 90 via the network 80 via the global wireless communication interface 73, and can communicate with the server 90 via the local wireless network and the network 80 via the local wireless communication interface 74. In addition, the local wireless communication interface 74 enables direct wireless communication with the video display device 1.

Various functions are implemented in the control unit 71 by installing a dedicated application for the image display system in the information terminal 70 .

The control unit 71 includes setting means 71a for enabling various settings including the initial settings performed by the information terminal 70 for the image display device 1, digital image switching means 71b having the same function as the above-described digital image switching means 21a, starry sky image switching means 71c having the same function as the above-described starry sky image switching means 21b, and diurnal motion switching means 71d having the same function as the above-described diurnal motion switching means 21c. A selection operation means 71e for selecting content, which is a moving image or a still image to be projected, and a monitor screen providing means 71f for executing the above-described monitor screen providing process of transmitting the screen displayed on the screen of the information terminal 70 to the video display device 1 as content data related to the still image or moving image constituting the monitor screen are mounted.

The selection operation means 71e is configured to select content data (selected content data) to be projected as a digital image onto the target plane M from a plurality of content data, which are still image data or moving image data, stored in a storage unit 92 (to be described later) of the server 90. Incidentally, the content data to be selected are collectively or individually displayed on the screen of the information terminal 70 .

FIG. 12 is a block diagram showing the configuration of the server. The server 90 includes a control unit 91 composed of a CPU, a RAM, etc., capable of implementing various functions by executing a program, a storage unit 92 composed of an SSD or HDD, etc., storing various kinds of information, a communication interface (communication means) 93 directly connected to the network 80, an output interface 94 including a display device and being information output means for outputting various information, and an input interface 95 being information input means such as a keyboard and a mouse.

In the storage unit 92, a content data storage area 92a is secured as a storage area for storing a plurality of content data, which are data of still images or moving images related to digital images.

In this content data storage area 92a, one or more starry sky-related content data, which is content data including a starry sky projection time period (synchronized reproduction time), which is a time period in which a digital image and a starry sky image are projected onto the target surface M in synchronization with each other, in part or all of the entire time period (reproduction time) in which a predetermined image is displayed (reproduced) on the target surface M, and one or more non-starry sky-related content data, which is content data in which the synchronous reproduction time is not included in the entire reproduction time. Content data and two types of content data are stored.

The control unit 91 is equipped with content data providing means 91a for providing selected content data selected by the information terminal 70 by the selection operation means 71e from among a plurality of content data stored in the content data storage area 92a to the video display device 1 via the network 80.

Then, when content data of a moving image or a still image related to a digital image to be projected onto the target surface M is selected as selected content data by the selection operation means 71e of the information terminal 70, content reproduction processing for displaying the moving image or still image on the target surface M is executed by the video display system.

FIG. 13 is a flowchart showing the procedure of content reproduction processing. When the content reproduction process is started, the process proceeds to step S101. In step S101, the projection mode switching means 4b confirms whether the selected content data is starry sky related content data or non-starry sky related content data, and if the selected content data is starry sky related content data, the process proceeds to step S102.

In step S102, the projection mode switching means 4b confirms whether or not the playback time of the selected content data at that time is during the synchronous playback time. By the way, information about the total playback time and the time zone of the synchronized playback time is naturally included in the content data.

In step S103, the projection mode switching means 4b switches the projection mode of the image display device 1 to the double projection mode, and the synchronous display means 4e performs synchronous display processing for synchronizing the digital image display processing executed by the digital image display means 4c with the starry sky image display processing executed by the starry sky image display means 4d. Proceed to 104.

That is, according to the process of step S101→step S102→step S103, when the selected content data is starry sky-related content data and the playback time of the starry sky-related content data is in the middle of the synchronous playback time, the projection mode switching means 4b automatically switches the image display device 1 to the double projection mode.

Incidentally, while the digital image of the moving image or the still image related to the selected content data is being projected onto the object plane M, depending on the contents of the moving image or the still image, the display mode switching process is appropriately executed by the display mode switching means 4f, and the display mode of the image display device 1 is switched between the normal mode and the enlarged mode.

In step S104, it is confirmed whether or not it is time to end the reproduction of the selected content data (the process of projecting and displaying a moving image or still image related to the selected content data onto the target plane M). If it is not yet time to end, the process returns to step S101. The process of step 104 may be performed by the control unit 4 of the video display device 1, or may be performed by the information terminal 70 or the server 90. FIG.

In step S101, if the selected content data is non-starry sky related content data, the process proceeds to step S105. Further, if it is confirmed in step S102 that the reproduction time of the selected content data at that time is other than the synchronous reproduction time, the process proceeds to step S105. In step S105, digital image display processing is performed to project only the moving image or still image related to the selected content data onto the target surface M by the digital image display means 4c, and the process proceeds to step S104.

That is, according to the process of proceeding from step S101 to step S105, when the selected content data is non-starry sky related content data, the projection mode switching means 4b automatically switches the image display device 1 to the projector projection mode. Further, according to the processing proceeding from step S101→step S102→step S105, even if the selected content data is starry sky-related content data, the projection mode switching means 4b automatically switches the image display device 1 to the projector projection mode if the playback time is other than synchronous playback.

According to the image display system configured as described above, when starry sky-related content data is selected as selected content data, a starry sky image in a required state is projected onto the target plane M together with the digital image at the required timing by synchronous display processing. In addition, since a series of processing is automatically performed by selecting content data, there are great advantages in terms of speed and reduction of labor.

In addition, the image display device 1 is easy to handle because almost all necessary parts are contained in the two housings 26 and 27 and the whole is integrated.

In addition, the entire playback time of the starry sky-related content data may be set as the synchronized playback time. In this case, the processing of step S102 becomes unnecessary.

Also, as indicated by the virtual lines in FIG. Similar to the server 90, the content data storage area 72a stores one or a plurality of starry sky related content data and one or a plurality of non-starry sky related content data.

Correspondingly, the information terminal 70 is provided with content data providing means 71g for providing the content data stored in the content data storage area 72a to the video display device 1 via the network 80, as indicated by the virtual lines in FIG.

11, the information terminal 70 may be provided with one or both of projection mode switching means 71h having the same function as the projection mode switching means 4b of the image display device 1 and display mode switching means 71i having the same function as the display mode switching means 4f, thereby reducing the load on the image display device 1.

In addition, in the content data storage area 11a of the storage unit 11 of the video display device 1, in addition to the content data related to the initial setting screen, one or more starry sky related content data and one or more non-starry sky related content data that are the content data stored in the server 90 may be stored. In this case, it is possible to omit the content data providing means 71g and 91a from the information terminal 70 and the server 90. FIG.

12, the control unit 91 of the server 90 may also be provided with one or both of a projection mode switching unit 91b having the same function as the projection mode switching unit 4b of the video display device 1 and a display mode switching unit 91c having the same function as the display mode switching unit 4f, thereby reducing the load on the video display device 1.

The content data stored in the content data storage areas 11a, 72a, and 92a may include moving image data or slide data including normal digital images and enlarged digital images, and content data with a display mode switching function that automatically switches between the normal mode and the enlarged mode by playing back the moving image data or the slide data.

Incidentally, the above-described normal digital image includes a pseudo normal digital image having the same size as the enlarged digital image, projecting an image related to a moving image in the normal range R2, and projecting the same single color as the target surface M or a single background color such as black or white in a range in the enlarged range R1 that does not overlap with the normal range R2.

Using such content data with a display mode switching function makes it possible to omit the display mode switching means 4f, 71i, and 91c. Furthermore, if a pseudo normal digital image is used, the projection range changing section 14 can be omitted, further simplifying the configuration.

2 Projector 3 Projector 4b Projection Mode Switching Means 4e Synchronous Displaying Means 4f Display Mode Switching Means 11 Storage Unit 14 Projection Range Changing Unit 16 Light Source 17 Image Depicting Material (original plate, stellar original plate, film)
70 Information terminal (smartphone)
71h projection mode switching means 71i display mode switching means 72 storage section 90 server 91b projection mode switching means 91c display mode switching means 92 storage section M target surface R1 expansion range R2 normal range

Claims (8)

An image display system for projecting and displaying an image on a target surface,
A video display device comprising: a projector for projecting a starry sky image, which is an image containing a plurality of celestial bodies corresponding to the original plate, onto the target surface by irradiating the target surface with light emitted from a light source and transmitted through an original plate or a film;
an information terminal capable of communicating with the video display device;
a storage unit storing a plurality of content data, which is moving image or still image data related to the digital image;
The storage unit stores at least one piece of starry sky-related content data, which is content data capable of being collectively projected onto the target plane together with the starry sky image, in a starry sky projection time zone, which is at least a part of the entire time zone in which the digital image is projected onto the target plane,
The image display device has a projector projection mode for projecting only the starry sky image onto the target plane, a projector projection mode for projecting only the digital image onto the target plane, and a double projection mode for projecting both the starry sky image and the digital image onto the target plane,
The information terminal has selection operation means for selecting the content data from the storage unit,
The image display device is automatically switched to the double projection mode when the content data selected by the selection operation means is the starry sky-related content data, and the timing at which the digital image related to the starry sky-related content data is projected onto the target surface is during the starry sky projection time zone. video display system. 2. The image display system according to claim 1, wherein when the image display device is switched to the projector projection mode or the double projection mode, the projector has a normal mode in which the digital image is projected in a normal range that is a partial range of the target plane, and an enlargement mode that projects the digital image in an enlarged range that is part or all of the target plane and is wider than in the normal mode. 3. The video display system according to claim 2, wherein the content data is content data related to a moving image or a plurality of still images including the digital image whose projection range is only the normal range and the digital image whose projection range is the entire enlarged range, and content data with a display mode switching function that automatically switches between the normal mode and the enlarged mode by reproducing the moving picture or reproducing the plurality of still images sequentially projected is stored in the storage unit as the content data. The projector is provided with a projection range changing unit that changes and controls a range of projection from the projector onto the target surface,
4. The image display system according to claim 2, wherein the projector or the information terminal is provided with display mode switching means for switching from one of the normal range and the enlarged range to the other or from the other to the other by the projection range changing unit according to the content data. 5. The image display system according to claim 1, wherein said storage unit is provided in said information terminal or said image display device, or provided in a server capable of communicating with said information terminal or said image display device. The entire time period for projecting the digital image on the target surface is defined as the starry sky projection time period,
The image display system according to any one of claims 1 to 5, wherein the projection mode switching means automatically switches the image display device to the double projection mode when the content data selected by the selection operation means is the starry sky-related content data, and switches the image display device to the projector projection mode when the content data selected by the selection operation means is not the starry sky-related content data. A part of the time period during which the digital image is projected onto the target surface is defined as the starry sky projection time period,
6. The image display system according to any one of claims 1 to 5, wherein the projection mode switching means switches the image display device to the projector projection mode even when the content data selected by the selection operation means is the starry sky-related content data and the timing at which the digital image related to the starry sky-related content data is projected onto the target surface is a time period other than the starry sky projection time period. 8. The image display system according to any one of claims 1 to 7, wherein in the double projection mode, the image display device is provided with synchronous display means for synchronizing and displaying the starry sky image projected by the projector and the digital image projected by the projector on the target surface.

Images