JP2012195817A - Display system, display device, and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display system, a display device, and a display method that are capable of quickly coping with a case where a state of a viewer is not suitable for stereoscopic vision in a configuration in which parallax images including a left-eye image and a right-eye image are displayed to allow the viewer to visually recognize a stereoscopic image.SOLUTION: A display system 10 comprises: a projector 11 that displays parallax images including a left-eye image and a right-eye image; and a stereoscopic vision device 2 that has a left-eye transmission unit for transmitting only the left-eye image among the parallax images displayed by the projector 11 and a right-eye transmission unit for transmitting only the right-eye image. The stereoscopic vision device 2 detects the tilt of the stereoscopic vision device 2, and transmits information indicating the detected tilt to the projector 11. The projector 11 specifies the tilt of the stereoscopic vision device 2 based on the information transmitted from the stereoscopic vision device 2, and stops display of the parallax images when the tilt of the stereoscopic vision device 2 becomes unsuitable for stereoscopic vision.

Description

  The present invention relates to a display system, a display device, and a display method for displaying a stereoscopic image.

  2. Description of the Related Art Conventionally, a system that combines a display device that displays a stereoscopic image and a glasses-type device that enables the stereoscopic image to be visually recognized corresponding to the display device is known. This type of system displays a parallax image including a left-eye image and a right-eye image on a display device, and causes the right-eye image to reach only the viewer's right eye using the above-described glasses-type device. Only the image for the left eye is reached. In this system, when the viewer does not wear the glasses-type device, a stereoscopic image cannot be recognized, and the left-eye image and the right-eye image having parallax appear as a double image. Therefore, a method has been proposed in which a parallax image is not displayed when the viewer does not wear the glasses-type device (see, for example, Patent Document 1).

JP 2006-84964 A

By the way, even if the viewer wears the glasses-type device described above, if the viewer's eyes are tilted with respect to the image displayed on the display device, the desired stereoscopic view cannot be achieved and the image appears as a double image. There is a possibility. On the other hand, in the configuration in which the state of the viewer is detected in the display device, for example, the positional relationship between the display device and the viewer is restricted. For this reason, a method with a higher degree of freedom regarding the configuration of the display device is desired.
The present invention has been made in view of the above-described circumstances. In a configuration in which a parallax image including a left-eye image and a right-eye image is displayed and a viewer can visually recognize a stereoscopic image, the viewer's state is stereoscopic. It is an object of the present invention to provide a display system, a display device, and a display method that can quickly cope with a case that is not suitable.

In order to solve the above problems, the present invention provides a display device that displays a parallax image including a left-eye image and a right-eye image, and a left-eye that transmits only the left-eye image among the parallax images displayed by the display device. A stereoscopic device having a transmission part for right and a transmission part for right eye that transmits only the right-eye image, wherein the stereoscopic device includes an inclination detection unit that detects an inclination of the stereoscopic device, and the inclination detection unit. Tilt notification means for transmitting information indicating the tilt detected by the display device to the display device, the display device receiving the information transmitted from the stereoscopic device, and received by the receiving means Based on the information, when the stereoscopic state detection means for specifying the inclination of the stereoscopic device and the inclination of the stereoscopic device specified by the stereoscopic state detection unit is not suitable for stereoscopic vision, Visual And a controlling means for stopping the display of the image.
According to the present invention, the tilt of the stereoscopic device is detected by the function of the stereoscopic device, and when the tilt is not suitable for the stereoscopic view, the display of the parallax image is stopped. For this reason, without being restricted by a mechanism for detecting the state of the stereoscopic device on the display device main body, it is possible to quickly respond to the viewer when the viewer's state becomes unsuitable for stereoscopic viewing. The display of the parallax image can be stopped so as not to show the image.

In the display system according to the present invention, the control unit included in the display device displays a planar image when the display of the parallax image is stopped.
According to the present invention, even when the tilt of the stereoscopic device is not suitable for stereoscopic viewing, the viewer can continue to view the image by displaying the planar image. For this reason, display of a parallax image can be stopped without impairing the convenience and interest of the viewer.

In the display system, the display device alternately displays the left-eye image and the right-eye image, and the left-eye transmission unit and the right-eye transmission unit included in the stereoscopic device. Is provided with a shutter corresponding to each of the left eye and the right eye, and is a shutter device that opens and closes the shutter for the left eye and the shutter for the right eye in synchronization with display switching of the display device.
According to the present invention, in the configuration in which the left-eye image and the right-eye image of the parallax image are transmitted through the shutter corresponding to the left eye and the right eye, respectively, the parallax image appears as a double image due to the tilt of the stereoscopic device. Can be prevented.

In the display system according to the present invention, the stereoscopic device includes the left-eye shutter and the right-eye shutter arranged side by side, and the tilt detection unit includes the left-eye shutter and the right-eye shutter. It is arranged at the end of each shutter except between the shutters or between the shutter for the left eye and the shutter for the right eye.
According to the present invention, if the tilt detection means is arranged between the left-eye shutter and the right-eye shutter, the tilt of the stereoscopic device can be efficiently detected by one tilt detection means. Further, if the tilt detection means is disposed at the end of each shutter except between the left-eye shutter and the right-eye shutter, the tilt detection device is disposed at both ends of the stereoscopic device. Can be detected more accurately.

In the display system, the present invention includes a plurality of the stereoscopic devices, and the receiving unit included in the display device is configured to receive information transmitted from the plurality of stereoscopic devices, and the control unit Is characterized in that the display of the parallax image is stopped when the tilt of any one of the stereoscopic devices is not suitable for stereoscopic viewing.
According to the present invention, when a plurality of stereoscopic devices are used, the display of the parallax image is stopped when the tilt of any of the stereoscopic devices is not suitable for stereoscopic viewing. For this reason, when a plurality of viewers each use a stereoscopic device, the display of the parallax image is stopped if even one person becomes unsuitable for stereoscopic viewing. It is possible to prevent the parallax image from appearing as a double image due to the tilt of the apparatus.

In the display system, the display device may be a projector that projects a parallax image including a left-eye image and a right-eye image on a projection surface.
According to the present invention, a projector that projects a parallax image on a projection surface can quickly respond to a situation where the viewer's state is not suitable for stereoscopic viewing so that the viewer does not show a double image. The display can be stopped. In addition, since it is not necessary to provide sensors for detecting the tilt of the stereoscopic device in the projector, there are few restrictions on the positional relationship between the projector, the projection surface, and the viewer.

In order to solve the above problem, the present invention displays a parallax image including a left-eye image and a right-eye image, and transmits only the left-eye image among the parallax images displayed by the display device. Display means for displaying a parallax image in a visually recognizable manner by a stereoscopic device having a transparent portion for transmission and a right-eye transmission portion that transmits only the right-eye image, and acquisition of information indicating the inclination of the stereoscopic device from outside And the stereoscopic state detection means for specifying the inclination of the stereoscopic device based on the information acquired by the acquisition means, and the inclination of the stereoscopic device specified by the stereoscopic state detection means is stereoscopic. And a control means for stopping the display of the parallax image when the state becomes unsuitable.
According to the present invention, when the tilt of the stereoscopic device is detected by the function of the stereoscopic device or the function of another device, information indicating the tilt is acquired, and the obtained tilt of the stereoscopic device is stereoscopically viewed. If not suitable, the display of the parallax image is stopped. For this reason, without being restricted by a mechanism for detecting the state of the stereoscopic device on the display device main body, it is possible to quickly respond to the viewer when the viewer's state becomes unsuitable for stereoscopic viewing. The display of the parallax image can be stopped so as not to show the image.

In order to solve the above problem, the present invention displays a parallax image including a left-eye image and a right-eye image, and transmits only the left-eye image among the parallax images displayed by the display device. A display device that displays a parallax image in a visually recognizable manner by a stereoscopic device having a transmission portion for right and a right-eye transmission portion that transmits only the right-eye image, and obtains information indicating the inclination of the stereoscopic device from the outside. Based on the acquired information, the tilt of the stereoscopic device is specified, and display of the parallax image is stopped when the tilt of the stereoscopic device is not suitable for stereoscopic vision.
According to the method of the present invention, when the tilt of the stereoscopic device is detected by the function of the stereoscopic device or the function of another device, information indicating the tilt is acquired, and the obtained tilt of the stereoscopic device is If it is not suitable for stereoscopic viewing, the display of the parallax image is stopped. For this reason, without being restricted by a mechanism for detecting the state of the stereoscopic device on the display device main body, it is possible to quickly respond to the viewer when the viewer's state becomes unsuitable for stereoscopic viewing. The display of the parallax image can be stopped so as not to show the image.

  According to the present invention, the viewer can quickly respond when the viewer's state becomes unsuitable for stereoscopic viewing without being restricted by a mechanism for detecting the state of the stereoscopic device on the display device body. The display of parallax images can be stopped so as not to show a double image.

It is a figure which shows schematic structure of the display system which concerns on embodiment of this invention. It is a block diagram which shows the structure of a display system. It is a flowchart which shows operation | movement of a stereoscopic vision apparatus. It is a flowchart which shows operation | movement of the projector with respect to one stereoscopic vision apparatus. It is a flowchart which shows operation | movement of the projector with respect to a several stereoscopic device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a schematic configuration of a display system 10 to which the present invention is applied.
The display system 10 includes a projector 11 that projects a still image or a moving image on a screen SC, and a stereoscopic device 2 that is worn by a viewer who views the image projected by the projector 11. The projector 11 is fixed to, for example, the floor surface, a pedestal installed on the floor surface, or the ceiling, and the screen SC is substantially upright, for example, and the screen surface is rectangular. The projector 11 forms a parallax image that can be viewed stereoscopically on the screen SC, and the viewer can view the stereoscopic image by wearing the stereoscopic device 2 and viewing the parallax image on the screen SC. The projector 11 functions as a display device by projecting an image on a screen SC as a projection surface.
The stereoscopic device 2 has a glasses-type frame 20 and is mounted on the viewer's head in the same manner as the glasses. The frame 20 is provided with a left eye shutter 21 that opens and closes the viewer's left eye field of view and a right eye shutter 22 that opens and closes the viewer's right eye field of view.

The parallax image projected by the projector 11 includes a left-eye image and a right-eye image having parallax. The projector 11 alternately forms the image for the left eye and the image for the right eye on the screen SC, and the frame 20 functions as a left eye transmission unit in synchronization with the switching of the image for the left eye and the image for the right eye of the projector 11. The left-eye shutter 21 and the right-eye shutter 22 as the right-eye transmission part are alternately opened and closed. Thus, the viewer can visually recognize the left-eye image with the left eye and the right-eye image with the right eye, so that the parallax image projected by the projector 11 can be stereoscopically viewed.
FIG. 1 illustrates a configuration example in which only one stereoscopic device 2 is used. In the display system 10, a plurality of people wear the stereoscopic device 2, and the plurality of stereoscopic devices 2 are connected to the projector 11. Can be operated together.

FIG. 2 is a block diagram illustrating a functional configuration of the display system 10.
The projector 11 is connected to an external image supply device (not shown) such as a personal computer or various image players via an I / F (interface) unit 101, and an input image input from these image supply devices is displayed on the screen SC. Project to. For example, the I / F unit 101 includes a USB interface, a wired or wireless LAN interface, a VGA terminal to which an analog video signal is input, a DVI (Digital Visual Interface) to which a digital video signal is input, NTSC, PAL, SECAM, and other composites. Provided with an S video terminal to which a video signal is input, an RCA terminal to which a composite video signal is input, a D terminal to which a component video signal is input, an HDMI connector conforming to the HDMI (registered trademark) standard, etc. There may be provided an interface circuit for inputting / outputting signals via the.
Examples of the image supply device include a video playback device, a DVD playback device, a TV tuner device, a CATV set top box, an image output device such as a video game device, and a personal computer. In the present embodiment, description will be made assuming that digital image data is input from the image supply apparatus to the I / F unit 101. This digital image data includes information related to the image format of the digital image data as well as the image data itself. For example, when the input image data is stereoscopic image data, various information including data indicating a stereoscopic video format (side-by-side, top-and-bottom, frame sequential, etc.), frame rate, resolution, and the like are included.

The projector 11 is roughly composed of a projection unit 3 (display unit) that forms an optical image and an image processing system that electrically processes an image signal input to the projection unit 3. The projection unit 3 includes an illumination optical system 31, a liquid crystal panel 32 that is a light modulation device, and a projection optical system 33. The illumination optical system 31 includes a light source including a xenon lamp, an ultra high pressure mercury lamp, an LED (Light Emitting Diode), and the like. The illumination optical system 31 may include a reflector and an auxiliary reflector that guide light emitted from the light source to the liquid crystal panel 32, and a lens group (not shown), a polarizing plate, A light control element or the like that reduces the amount of light emitted from the light source on the path to the liquid crystal panel 32 may be provided.
The liquid crystal panel 32 receives a signal from an image processing system, which will be described later, and forms an image on the panel surface. The liquid crystal panel 32 includes three liquid crystal panels corresponding to the three primary colors of RGB in order to perform color projection. Therefore, the light from the illumination optical system 31 is separated into three color lights of RGB, and each color light enters each corresponding liquid crystal panel. The color light modulated by passing through each liquid crystal panel is combined by a combining optical system such as a cross dichroic prism and emitted to the projection optical system 33.

The projection optical system 33 includes a zoom lens that performs enlargement / reduction of a projected image and a focus adjustment, a zoom adjustment motor that adjusts the degree of zoom, a focus adjustment motor that performs focus adjustment, and the like. The projection optical system 33 projects the incident light modulated by the liquid crystal panel 32 on the screen SC using a zoom lens.
The projection unit 3 includes a projection optical system drive unit 121 that drives each motor included in the projection optical system 33 according to the control of the control unit 103, and a light source drive unit that drives the light source of the illumination optical system 31 according to the control of the control unit 103. 117 is connected.

  The image processing system is configured around a control unit 103 that controls the entire projector 11 in an integrated manner, a storage unit 105 that stores data processed by the control unit 103 and a control program 105A executed by the control unit 103, and an operation panel 45. And an input processing unit 123 that detects an operation via the remote control light receiving unit 41, a display control unit 107 that processes input image data, and a liquid crystal panel 32 based on an image signal output from the display control unit 107 to draw. An optical modulator driving unit 119 is provided.

  The control unit 103 controls each unit of the projector 11 by reading and executing the control program stored in the storage unit 105. The control unit 103 detects the content of the operation performed by the user based on the operation signal input from the input processing unit 123, and according to this operation, the display control unit 107, the light modulation device driving unit 119, the projection optical system. The drive unit 121 and the light source drive unit 117 are controlled to project an image on the screen SC.

In the main body of the projector 11, an operation panel 45 provided with various switches and indicator lamps for operation by the user is arranged. The operation panel 45 is connected to the input processing unit 123, and the input processing unit 123 turns on or blinks the indicator lamp of the operation panel 45 as appropriate according to the operation state and setting state of the projector 11 according to the control of the control unit 103. . When the switch of the operation panel 45 is operated, an operation signal corresponding to the operated switch is output from the input processing unit 123 to the control unit 103.
The projector 11 includes a remote control light receiving unit 41 that receives an infrared signal transmitted from a remote control (not shown) used by the user. The remote control light receiving unit 41 decodes the infrared signal received from the remote control, generates an operation signal indicating the operation content by the remote control, and outputs the operation signal to the control unit 103.

The display control unit 107 is connected to an external image supply device (not shown). The display control unit 107 generates a display signal based on an input image signal input from the image supply device via the I / F unit 101 under the control of the control unit 103, and outputs the display signal to the light modulation device driving unit 119.
That is, the display control unit 107 acquires the image data input from the I / F unit 101, and the function of the image determination unit 131 determines whether the input image data is 2D (planar) image data or a 3D (stereoscopic) image. It is determined whether it is. In addition, when the input image data is stereoscopic image data, the image determination unit 131 determines the stereoscopic video format. The display control unit 107 expands the input image determined by the image determination unit 131 in the frame memory 115 for each frame. The display control unit 107 also determines the left-eye frame (left-eye image) and the right-eye frame (right-eye image) according to the stereoscopic video format for the input image data determined by the image determination unit 131 as stereoscopic image data. Are extracted and expanded in the frame memory 115.
Here, the display control unit 107 performs resolution conversion processing when the resolution of the input image data is different from the display resolution of the liquid crystal panel 32, and when zooming is instructed by operating a remote controller (not shown) or the operation panel 45. Then, enlargement / reduction processing is performed, and the display frame after processing is drawn in the frame memory 115.

The display control unit 107 includes a display switching unit 133 that outputs an image for each frame developed in the frame memory 115 to the light modulator driving unit 119 as a display signal. The display switching unit 133 has a function of switching between a stereoscopic image and a planar image under the control of the control unit 103. When the input image data is a stereoscopic image, the display switching unit 133 outputs a stereoscopic image display signal to the light modulation device driving unit 119. It is possible to output a flat image display signal. As a method for outputting a planar image display signal during the input of stereoscopic video data, only one of the left-eye frame and the right-eye frame extracted from the stereoscopic video data (the left-eye frame in this embodiment) is used. The method of outputting is mentioned.
The liquid crystal panel 32 is driven at, for example, 120 frames or 240 frames per second, and when displaying a stereoscopic image, the light modulator driving unit 119 alternately turns the left eye frame and the right eye frame 60 frames per second. Drawn.

The projector 11 includes a synchronization signal transmission unit 49 for operating the stereoscopic device 2 in synchronization with switching between the left-eye frame and the right-eye frame drawn on the liquid crystal panel 32. The synchronization signal transmission unit 49 transmits a synchronization signal that synchronizes the stereoscopic device 2 with the switching timing of the left-eye frame and the right-eye frame drawn on the liquid crystal panel 32. This synchronization signal is a signal indicating the timing at which the stereoscopic device 2 opens and closes the left-eye shutter 21 and the right-eye shutter 22. The opening / closing timing of the left-eye shutter 21 and the right-eye shutter 22 and the timing for drawing the left-eye and right-eye frames on the liquid crystal panel 32 are not always exactly the same. Since the liquid crystal panel 32 is drawn for each line, it takes time until one frame is drawn for all lines after the drawing of the liquid crystal panel 32 is started. In the middle of this, a part of the previously drawn frame and a part of the newly drawn frame are mixed. If the left-eye shutter 21 or the right-eye shutter 22 is opened in such a state where the left-eye frame and the right-eye frame are mixed, a phenomenon called crosstalk is caused. Therefore, in an ideal example of the synchronization signal generated by the control unit 103, the left-eye shutter 21 is opened after the drawing of the left-eye frame is completed and before the drawing of the right-eye frame is started. This signal is used to open the right-eye shutter 22 after the drawing of the left-hand frame is completed and before the drawing of the left-eye frame is started. Actually, the left-eye shutter 21 and the right-eye shutter 22 are opened and closed at a timing adjusted so as not to give the viewer a sense of incongruity as much as possible according to the drawing speed and the frame rate on the liquid crystal panel 32. . The control unit 103 generates the synchronization signal adjusted as described above, and causes the synchronization signal transmission unit 49 to transmit the synchronization signal to the stereoscopic device 2.
The synchronization signal transmission unit 49 includes, for example, an infrared LED and an LED drive circuit, and radiates an infrared signal that switches between High and Lo at the timing generated by the control unit 103. For example, a transmission window of the synchronization signal transmission unit 49 is provided on the outer surface of the main body of the projector 11 illustrated in FIG. 1 toward the viewer side wearing the stereoscopic device 2.

  The stereoscopic device 2 includes a control unit 201 that controls each unit of the stereoscopic device 2, a synchronization signal reception unit 202 that receives a synchronization signal transmitted from the projector 11, and a left-eye shutter 21 and a right eye that are controlled by the control unit 201. And a shutter drive unit 203 that opens and closes the shutter 22 for use. The synchronization signal receiving unit 202 receives the synchronization signal transmitted from the projector 11 and outputs it to the control unit 201. The shutter driving unit 203 opens and closes the left-eye shutter 21 and the right-eye shutter 22 in synchronization with the synchronization signal received by the synchronization signal receiving unit 202. The left-eye shutter 21 and the right-eye shutter 22 are configured by, for example, liquid crystal shutters, and while the left-eye shutter 21 is open, the viewer can visually recognize the image on the screen SC with the left eye, and the right-eye shutter 22 is open. The viewer can visually recognize the image on the screen SC with the right eye. By matching the opening / closing timing of the left-eye shutter 21 and the right-eye shutter 22 with the time when the left-eye image and the right-eye image are displayed on the screen SC, the left-eye image and the right-eye image are individually transmitted. be able to.

In addition, the stereoscopic device 2 includes an inclination detection unit 204 that detects the inclination of the stereoscopic device 2. The inclination detection unit 204 includes, for example, a gyro sensor, an acceleration sensor, and an inclination sensor. The inclination detection unit 204 detects the angle of the reference plane of the stereoscopic device 2 when the horizontal plane or the vertical is used as a reference, for example. The reference plane of the stereoscopic device 2 is, for example, a plane passing through the center of the left-eye shutter 21 (FIG. 1) and the center of the right-eye shutter 22 (FIG. 1) provided in the stereoscopic device 2, or a predetermined frame 20 It is preset as a plane passing through the location. Further, as the tilt of the stereoscopic device 2, it is only necessary to detect the tilt of the stereoscopic device 2 with respect to the image formed on the screen SC. In the present embodiment, as an example, the projector 11 displays an image horizontally on the screen SC. In the case of projecting, an example in which the angle of the stereoscopic device 2 with respect to the horizontal plane is detected will be given. The inclination detection unit 204 operates under the control of the control unit 201. The control unit 201 acquires the detection value of the inclination detection unit 204, generates a wireless signal indicating the detection value, and transmits the wireless signal to the projector 11 by the transmission unit 205. Send it. The transmission unit 205 includes a transmission circuit that transmits information using infrared rays or radio waves of a predetermined frequency (arbitrary). The signal transmitted by the transmission unit 205 may include information indicating whether the reference of the detection value is a vertical plane or a horizontal plane, in addition to the detection value of the stereoscopic device 2. The inclination detection unit 204 functions as an inclination detection unit together with the control unit 201, and the transmission unit 205 functions as an inclination detection unit together with the control unit 201.
Note that the stereoscopic device 2 includes a battery 25, and supplies power from the battery 25 to each unit including the control unit 201 and the shutter driving unit 203.

  As an installation location of the sensor provided in the tilt detection unit 204, an installation location A between the left-eye shutter 21 and the right-eye shutter 22 in the frame 20 shown in FIG. This place corresponds to the center of the viewer's eyes and has an advantage that the inclination of the reference plane can be accurately detected by one sensor. In addition, examples of the installation location of the sensor include an installation position B that is an end portion of the left-eye shutter 21 or an installation position C that is an end portion of the right-eye shutter 22. When sensors are installed at the installation positions B and C, they may be installed at either one of these, or may be installed at both. When the sensors are installed at the installation positions B and C, there is an advantage that the viewer's field of view is not hindered even if the inclination detection unit 204 is large. The installation positions B and C are places where the stereoscopic device 2 is greatly displaced when the stereoscopic device 2 is tilted with respect to the screen SC along a plane including the left-eye shutter 21 and the right-eye shutter 22 of the stereoscopic device 2. It is. For this reason, when a sensor is installed at the installation positions B and C, the inclination of the stereoscopic device 2 can be detected more sensitively, particularly when an acceleration sensor is used.

FIG. 3 is a flowchart showing the operation of the stereoscopic device 2.
The stereoscopic device 2 includes a power switch (not shown). When this power switch is turned on (step S11), the operation starts under the control of the control unit 201. The control unit 201 starts reception of the synchronization signal by the synchronization signal receiving unit 202 (step S12), controls the shutter driving unit 203 to synchronize with the synchronization signal, and opens and closes the left-eye shutter 21 and the right-eye shutter 22. Is executed (step S13).
In addition, the control unit 201 starts detection of the tilt by the tilt detection unit 204 immediately after the power is turned on, acquires the detection value of the tilt detection unit 204 at a predetermined period (step S14), and transmits the detection value to the transmission unit 205. To the projector 11 (step S15). The control unit 201 continues the opening and closing of the left-eye shutter 21 and the right-eye shutter 22 by the shutter driving unit 203 and the detection of the tilt by the tilt detection unit 204 until the power switch is turned off (step S16; No). When the power switch is turned off, the operation is stopped (step S16; Yes). Note that the power supply may be automatically turned off under the control of the control unit 201 when the time during which the synchronization signal is not received by the synchronization signal receiving unit 202 continues for a predetermined time or longer.

The control unit 103 illustrated in FIG. 2 includes a reception unit 47 (reception unit, acquisition unit) that receives a radio signal transmitted from the transmission unit 205 of the stereoscopic device 2. The receiving unit 47 is a receiving circuit configured according to the specification of the transmitting unit 205, receives the signal transmitted by the transmitting unit 205, and outputs it to the input processing unit 123. The input processing unit 123 decodes the signal input from the receiving unit 47 and outputs the decoded signal to the control unit 103. The control unit 103 projects an image to be projected on the screen SC based on the data input from the input processing unit 123. Is controlled to switch between solid and flat.
That is, the control unit 103 executes the control program 105A stored in the storage unit 105, specifies the inclination of the stereoscopic device 2 based on the signal transmitted from the stereoscopic device 2, and this inclination is stored in advance in the storage unit. Whether it is within the range stored in 105 is determined. This range is an inclination set as a recommended condition for stereoscopic viewing on the screen SC. If the viewing angle deviates from this range, the viewer wearing the stereoscopic device 2 can view the stereoscopic image due to left and right parallax. There is a possibility that problems such as seeing a double image may be caused.
Therefore, when the tilt of the stereoscopic device 2 deviates from the recommended range, the control unit 103 controls the display control unit 107 to stop the display output of the stereoscopic image and draw it on the liquid crystal panel 32. Switch the image to a flat image. This has the advantage that the viewer does not have to see the double image.
When executing an operation based on the control program 105A, the control unit 103 functions as a stereoscopic state detection unit and a control unit.

  FIG. 4 is a flowchart showing the operation of the projector 11, and particularly shows an example in the case where one stereoscopic device 2 and the projector 11 are used in combination. FIG. 4 shows an operation when stereoscopic image data is input from an external image supply device via the I / F unit 101. When plane image data is input, an operation for displaying the plane image data is performed.

When the control unit 103 detects an image input from the I / F unit 101 (step S21), the control unit 103 starts displaying stereoscopic image data (step S22). In other words, the light modulator driving unit 119 alternately draws the left-eye frame and the right-eye frame on the liquid crystal panel 32. Simultaneously with the start of the display, the control unit 103 starts transmission of a synchronization signal to the stereoscopic device 2 by the synchronization signal transmission unit 49 (step S23).
The control unit 103 determines whether or not the information transmitted from the transmission unit 205 of the stereoscopic device 2 has been received by the reception unit 47 (step S24). If the information is received, the control unit 103 determines the 3D based on the received information. The magnitude of the tilt of the visual device 2 is specified (step S25).

  Subsequently, the control unit 103 determines whether or not the inclination of the stereoscopic device 2 is within a preset recommended range (step S26). Whether or not it is within the recommended range is determined based on whether or not the detected value of the tilt of the stereoscopic device 2 is greater than or equal to a threshold value. . When the inclination of the stereoscopic device 2 is outside the recommended range (step S26; No), it is determined whether or not a stereoscopic image is currently being displayed on the liquid crystal panel 32 (step S27). If a stereoscopic image is being displayed (step S27; Yes), the control unit 103 controls the display switching unit 133 of the display control unit 107 to switch the image to be displayed to a planar image (step S28). Specifically, the right-eye frame included in the input image of the I / F unit 101 is not displayed, and only the left-eye frame is displayed by the light modulator driving unit 119. Thereby, even if the viewer is wearing the stereoscopic device 2, the viewer can view the planar image in the same manner and cannot see the double image. After switching, the control part 103 transfers to step S32.

Further, when the tilt of the stereoscopic device 2 deviates from the recommended range, that is, when the detected value of the tilt of the stereoscopic device 2 is equal to or greater than the threshold value and currently displaying a planar image (step S27; No) ), The control unit 103 continues the display of the planar image as it is by the display control unit 107 (step S29), and proceeds to step S32.
On the other hand, when the inclination of the stereoscopic device 2 is within the recommended range (step S26; Yes), the control unit 103 determines whether or not a stereoscopic image is currently being displayed on the liquid crystal panel 32 (step S30). If a stereoscopic image is being displayed (step S30; Yes), the control unit 103 proceeds to step S32 as it is. When the planar image is being displayed (step S30; No), the control unit 103 controls the display switching unit 133 of the display control unit 107 to switch the displayed image to a stereoscopic image (step S31). The process proceeds to S32.
In step S32, the control unit 103 determines whether or not to end the projection on the screen SC. If the projection is not ended, the control unit 103 returns to step S24.
Moreover, the control part 103 transfers to step S32, when the information which shows the inclination transmitted from the stereoscopic device 2 is not received by the receiving part 47 (step S24; No). Even if there is an obstacle or the like between the stereoscopic device 2 and the projector 11 or information may not be transmitted / received depending on the positional relationship between the stereoscopic device 2 and the projector 11, the planar image and the stereoscopic image This is an operation for avoiding discomfort to the viewer without switching the display. The projector 11 can also be used with a stereoscopic device that does not have the tilt detection unit 204 or the transmission unit 205. In this case, if the stereoscopic device has a function of receiving the synchronization signal transmitted by the projector 11 and opening and closing the left-eye shutter 21 and the right-eye shutter 22, stereoscopic viewing is possible. In such a case, the viewer can perform stereoscopic viewing by the projector 11 continuing to display the stereoscopic image.

As described above, a plurality of stereoscopic devices 2 can be used in combination with the projector 11.
As shown in FIG. 2, the control unit 201 of the stereoscopic device 2 stores an ID in a built-in storage unit, and this ID can be added to information transmitted by the transmission unit 205. When the projector 11 receives the information transmitted from the stereoscopic device 2, the projector 11 can cope with a plurality of stereoscopic devices 2 by identifying the ID. The operation in this case is shown in FIG. In FIG. 5, the same processes as those in FIG. 4 are denoted by the same step numbers and description thereof is omitted.

  In the operation illustrated in FIG. 5, the control unit 103 performs the processes in steps S <b> 21 to S <b> 25 in FIG. 4. Here, the control unit 103 specifies an ID included in the information received from the stereoscopic device 2, associates the ID with the inclination of the stereoscopic device 2 specified based on the received information, and stores the ID. The information is temporarily stored in the unit 105 (step S41). If the tilt of the stereoscopic device 2 is already stored in association with the same ID, this tilt is updated to the content newly specified in step S25. And the control part 103 discriminate | determines whether the inclination of the stereoscopic device 2 corresponding to all ID is in the preset recommended range (step S42). The determination as to whether or not it is within the recommended range is the same as in step S26, but the control unit 103 determines the inclinations associated with all the IDs stored in the storage unit 105.

  Here, when the inclination of the stereoscopic device 2 associated with all IDs is within the recommended range (step S42; Yes), the control unit 103 proceeds to step S30. On the other hand, if any one of the IDs has the inclination of the stereoscopic device 2 deviating from the recommended range (step S42; No), the control unit 103 proceeds to step S27. As a result, when at least one of the stereoscopic devices 2 that has transmitted information indicating the tilt to the projector 11 deviates from the recommended range, the display of the stereoscopic image is switched to the planar image, so that an unpleasant double image is shown. Can not be.

  The operation shown in FIG. 5 has an advantage that it is not necessary to show double images to all viewers without setting the number of stereoscopic devices 2 used in combination with the projector 11 in advance. Of the IDs stored in the storage unit 105, IDs that cannot be received by the receiving unit 47 for a predetermined time or longer, that is, IDs whose information indicating the inclination is not updated are deleted from the storage unit 105. Good. For example, when the stereoscopic device 2 that has been used has been left tilted while the power is on, the influence of the stereoscopic device 2 is eliminated, and only the tilt of the stereoscopic device 2 in use is reflected. Can operate.

  As described above, according to the display system 10 according to the embodiment to which the present invention is applied, the projector 11 that projects and displays the stereoscopic image as the parallax image including the left-eye image and the right-eye image on the screen SC. The stereoscopic device 2 includes a left-eye shutter 21 that transmits only the left-eye image of the parallax images displayed on the screen SC and a right-eye shutter 22 that transmits only the right-eye image. A tilt detection unit 204 that detects the tilt of the stereoscopic device 2 with respect to the screen SC, and a transmission unit 205 that transmits information indicating the tilt detected by the tilt detection unit 204 to the projector 11. A receiving unit 47 that receives information transmitted from the device 2 is provided, and is received by the receiving unit 47 by the function of the control unit 103. Identify the inclination of the stereoscopic device 2 based on the distribution, the slope of the identified stereoscopic device 2 when the state is not suitable for stereoscopic vision, and stops projection of stereoscopic images. Thereby, the tilt of the stereoscopic device 2 is detected by the function of the stereoscopic device 2, and when the tilt is not suitable for the stereoscopic vision, the projection of the stereoscopic image is stopped. Without receiving restrictions such as providing a mechanism to detect the state, promptly respond when the viewer's state is no longer suitable for stereoscopic viewing, and project a stereoscopic image so that the viewer does not see a double image. You can stop.

In addition, since the control unit 103 of the projector 11 displays a planar image when the projection of the stereoscopic image is stopped, even if the tilt of the stereoscopic device 2 is not suitable for stereoscopic viewing, the viewer continues to display the image. Can see.
The stereoscopic device 2 is configured to open and close the left-eye shutter 21 and the right-eye shutter 22 in synchronization with the switching between the left-eye image and the right-eye image that are displayed alternately on the screen SC. Although this configuration can easily realize stereoscopic viewing, it is easy to perceive a double image when the alignment direction of the left-eye shutter 21 and the right-eye shutter 22 is inclined with respect to the horizontal of the image on the screen SC. In the embodiment, it is possible to prevent the parallax image from being viewed as a double image due to the inclination of the stereoscopic device 2.
The stereoscopic device 2 is configured by arranging a left-eye shutter 21 and a right-eye shutter 22 side by side, and the tilt detection unit 204 is installed at the installation position A between the left-eye shutter 21 and the right-eye shutter 22 or the left-eye. The configuration is arranged at the installation position B or the installation position C, which is the end of each shutter except between the shutter 21 for the right eye and the shutter 22 for the right eye. If the tilt detection unit 204 is arranged at the installation position A, the tilt of the stereoscopic device 2 can be efficiently detected by one tilt detection unit 204. Further, if the tilt detection unit 204 is disposed at the installation positions B and C, the tilt detection device is disposed at the end of the stereoscopic device 2, so that the tilt of the stereoscopic device 2 can be detected more accurately. Furthermore, if the inclination detection unit 204 is installed at both the installation position B and the installation position C, the inclination can be detected more sensitively.

  When the display system 10 is configured using a plurality of stereoscopic devices 2 and the receiving unit 47 included in the projector 11 is configured to receive information transmitted from the plurality of stereoscopic devices 2, the control unit 103 When the tilt of any one of the stereoscopic devices 2 is not suitable for stereoscopic viewing, projection of the stereoscopic image is stopped, so that a plurality of viewers use the stereoscopic device 2 respectively. If even one person is not suitable for stereoscopic viewing, projection of the stereoscopic image is stopped. Thereby, it is possible to prevent the stereoscopic image on the screen SC from being viewed as a double image due to the inclination of the stereoscopic device 2 to all viewers.

  Further, by applying the present invention to the projector 11 that projects a parallax image including a left-eye image and a right-eye image on the screen SC, restrictions on the positional relationship between the projector, the screen SC, and the viewer can be reduced. There is an advantage.

In addition, embodiment mentioned above does not limit this invention, It is also possible to apply this invention as an aspect different from the said embodiment. For example, in the above embodiment, a configuration using three transmissive or reflective liquid crystal panels 32 corresponding to each color of RGB as an example of a light modulation device that modulates light emitted from a light source in the projection unit 3 is given as an example. However, the present invention is not limited to this, for example, a method using one liquid crystal panel and a color wheel, a method using three digital mirror devices (DMD), and one digital You may comprise by the system etc. which combined the mirror device and the color wheel. Here, when only one liquid crystal panel or DMD is used as the light modulation device, a member corresponding to a combining optical system such as a cross dichroic prism is unnecessary. In addition to the liquid crystal panel and the DMD, any configuration that can modulate the light emitted from the light source can be used without any problem.
Further, the display device of the present invention is not limited to a projector that projects an image on the screen SC, and the image / image is displayed on a liquid crystal monitor or liquid crystal television that displays an image / image on a liquid crystal display panel, or a plasma display panel (PDP). Monitor device or television receiver for displaying the image, self-light emission of the monitor device or television receiver for displaying an image / image on an organic EL display panel called OLED (Organic light-emitting diode), OEL (Organic Electro-Luminescence), etc. Various display devices such as a type display device are also included in the image display device of the present invention. In this case, a liquid crystal display panel, a plasma display panel, and an organic EL display panel correspond to the display means.

  In the above-described embodiment, the stereoscopic device 2 includes the left-eye shutter 21 of the liquid crystal shutter type as the left-eye transmission unit that transmits only the left-eye image among the parallax images displayed on the screen SC, and the right-eye image. In the above description, the configuration including the right-eye shutter 22 as the right-eye transmission portion that transmits only the lens is described as an example. However, the present invention is not limited to this, and the stereoscopic device 2 can display the displayed parallax image. It is good also as a structure provided with the polarizing filter which isolate | separates the image for left eyes, and the image for right eyes, respectively. The display device combined with the stereoscopic device 2 displays a left-eye image and a right-eye image having different deflection axis directions as parallax images on the screen SC or another display surface. Alternatively, a left-eye image and a right-eye image with opposite rotation directions may be displayed using circular deflection, and the left-eye image and the right-eye image may be separated by a filter of the stereoscopic device 2.

Furthermore, in the above-described embodiment, an input image input from an external image supply device is processed by the display control unit 107, and the projector 11 specifies the tilt of the stereoscopic device 2 based on information transmitted from the stereoscopic device 2. In the above description, the display control unit 107 switches the display between the planar image and the stereoscopic image according to the inclination. However, the present invention is not limited to this, and the process of switching the display of the planar image and the stereoscopic image is performed. The image supply device such as a personal computer externally connected to the projector 11 may be configured to execute. In this case, the image supply apparatus can include the functions of the control unit 103 and the display control unit 107 included in the projector 11. Specifically, the image supply device may be configured to switch and output a planar image and a stereoscopic image to the I / F unit 101 according to the control of the projector 11, or the image supply device may be configured to output the stereoscopic device 2. The inclination of the stereoscopic device 2 may be specified based on the information transmitted from, and the planar image and the stereoscopic image may be switched and output to the I / F unit 101 according to the inclination. The present invention can also be realized as a program executed by such an apparatus.
In addition, the control program 105A stored in the storage unit 105 in the above embodiment may be downloaded from another apparatus connected to the projector 11 via a communication network and executed, or may be stored in a portable recording medium. The control program 105A may be recorded, and the above programs may be read from the recording medium and executed.

  Further, each functional unit of the stereoscopic device 2 and the projector 11 illustrated in FIG. 2 indicates a functional configuration, and a specific mounting form is not particularly limited. That is, it is not always necessary to mount hardware corresponding to each function unit individually, and it is of course possible to adopt a configuration in which the functions of a plurality of function units are realized by one processor executing a program. In addition, in the above embodiment, a part of the function realized by software may be realized by hardware, or a part of the function realized by hardware may be realized by software. In addition, the specific detailed configuration of the display system 10 can be arbitrarily changed without departing from the spirit of the present invention.

  2 ... Stereoscopic device, 3 ... Projection unit (display means), 10 ... Display system (display system), 11 ... Projector (display device), 21 ... Shutter for left eye (transmission part for left eye), 22 ... Shutter for right eye ( Right-eye transmission unit), 47: reception unit (reception unit, acquisition unit), 49: synchronization signal transmission unit, 103: control unit (control unit, stereoscopic state detection unit), 105: storage unit, 105A: control program, DESCRIPTION OF SYMBOLS 107 ... Display control part, 201 ... Control part (Inclination detection means, Inclination notification means), 202 ... Synchronization signal receiving part, 203 ... Shutter drive part, 204 ... Inclination detection part (Inclination detection means), 205 ... Transmission part (Inclination) Notification means), SC ... screen (projection surface).

Claims (8)

A display device that displays a parallax image including a left-eye image and a right-eye image, a left-eye transmission unit that transmits only the left-eye image among the parallax images displayed by the display device, and only the right-eye image. And a stereoscopic device having a right-eye transmissive part,
The stereoscopic device includes:
Inclination detecting means for detecting the inclination of the stereoscopic device;
Inclination notification means for transmitting information indicating the inclination detected by the inclination detection means to the display device;
The display device
Receiving means for receiving information transmitted from the stereoscopic device;
Stereoscopic state detection means for specifying the inclination of the stereoscopic device based on the information received by the receiving means;
A display system comprising: control means for stopping display of a parallax image when the inclination of the stereoscopic device specified by the stereoscopic state detection means is not suitable for stereoscopic vision.   The display system according to claim 1, wherein the control unit included in the display device displays a planar image when the display of the parallax image is stopped. The display device alternately displays the left-eye image and the right-eye image,
The left-eye transmission unit and the right-eye transmission unit of the stereoscopic device include shutters corresponding to the left eye and the right eye, respectively, and the left-eye shutter and the right-eye shutter are synchronized with the display switching of the display device. The display system according to claim 1, wherein the display system is a shutter device that opens and closes the shutter. The stereoscopic device is configured by arranging the shutter for the left eye and the shutter for the right eye,
The inclination detecting means is disposed between the shutter for the left eye and the shutter for the right eye, or at the end of each shutter except for the space between the shutter for the left eye and the shutter for the right eye. The display system according to claim 3. A plurality of the stereoscopic devices;
The receiving means included in the display device is configured to receive information transmitted from the plurality of stereoscopic devices,
The said control means stops the display of a parallax image, when the inclination of any one said stereoscopic vision apparatus will be in the state suitable for a stereoscopic vision, The display of any one of Claim 2 to 5 characterized by the above-mentioned. Display system.   The display system according to claim 1, wherein the display device is a projector that projects a parallax image including a left-eye image and a right-eye image on a projection surface. A right eye that displays a parallax image including a left-eye image and a right-eye image, and transmits only the left-eye image among the parallax images displayed by the display device, and a right-eye image that transmits only the right-eye image. Display means for displaying a parallax image in a visually recognizable manner by a stereoscopic device having a transmission part for use;
Acquisition means for acquiring information indicating the inclination of the stereoscopic device from the outside;
Stereoscopic state detection means for specifying the inclination of the stereoscopic device based on the information acquired by the acquisition means;
A display device comprising: control means for stopping display of a parallax image when the inclination of the stereoscopic device specified by the stereoscopic state detection means is not suitable for stereoscopic vision. A right eye that displays a parallax image including a left-eye image and a right-eye image, and transmits only the left-eye image among the parallax images displayed by the display device, and a right-eye image that transmits only the right-eye image. By a display device that displays a parallax image so as to be visible by a stereoscopic device having a transmission part for use,
Obtaining information indicating the tilt of the stereoscopic device from the outside,
Based on the acquired information, identify the tilt of the stereoscopic device,
A display method characterized by stopping display of a parallax image when the tilt of the stereoscopic device is not suitable for stereoscopic viewing.

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