JP2020080504A - Stereoscopic video display system, stereoscopic video display device, stereoscopic video display method, and program - Google Patents

Abstract

To provide a stereoscopic video display system that displays a stereoscopic video with no discomfort for a viewer when a viewing mode is changed from 3D to 2D.SOLUTION: The present invention is a stereoscopic video display system comprising a shutter glasses including shutters, and a video display device that transmits opening/closing signals to the shutter glasses to cause the shutters to cooperate with different videos. In the stereoscopic video display system, the video display device includes a detection unit that detects an operation to change to a 2D viewing mode during display of a 3D video, an operation unit that calculates a first time to transmit a first opening/closing signal for causing the shutter glasses to enter a first state to conform to the 2D viewing mode, so that the time at which the video is changed to the 2D viewing mode and displayed on a display unit and the time at which the shutters enter the first state becomes the same on the basis of the detection result by the detection unit, and a transmission unit that transmits the first opening/closing signal to the shutter glasses at the first time.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stereoscopic video display system, a stereoscopic video display device, a stereoscopic video display method, and a program.

  2. Description of the Related Art Image display devices include a technique that allows a viewer to view 3D images in a pseudo manner by showing different images to the left and right eyes of a viewer. As such a 3D video viewing method, there is an active shutter glasses method in which a right-eye video image and a left-eye video image are alternately switched and displayed in frame units. In this method, 3D shutter glasses having a shutter function on each of the left and right lens parts are used, and by opening and closing each of the left and right of the shutter glasses in synchronization with the video signal, only the right eye is displayed during the frame display for the right eye, While the left-eye frame is being displayed, stereoscopic viewing is achieved by allowing the left eye to view the image only.

JP2012-156937A JP, 2013-180001, A

  When viewing a 3D image using the active shutter glasses method, the viewer views an image in which the brightness is significantly reduced as compared to when viewing the 2D image due to the light shielding by the shutter glasses. Therefore, when the viewing mode of the image is switched from 3D to 2D, the left and right lenses of the shutter glasses are fully opened, so that the viewer suddenly increases in brightness in addition to eye fatigue due to stereoscopic vision. Therefore, there is a problem that unpleasant glare is felt.

  Further, in order to reduce the increase in the perceived luminance due to the full opening of the shutter, a process for reducing the actual luminance using the amplitude modulation of the video signal is realized by a related technique. However, according to such a technique, the timing at which the shutter glasses are fully opened and the timing at which the frame subjected to the processing for reducing the actual brightness is drawn are often different, so that the brightness is short for the viewer. There is a problem that it looks like it fluctuates up and down, and feels strange when switching from 3D to 2D.

  The present invention has been made in consideration of such circumstances, and when the viewing mode is switched from 3D to 2D, a stereoscopic image display system capable of displaying a stereoscopic image that does not give a sense of discomfort to the viewer. An object is to provide a video display device, a stereoscopic video display method, and a program.

According to one embodiment of the present invention, shutter glasses are used to open and close left and right lenses by a shutter so that the left eye and the right eye of a viewer can view different images displayed on a display unit and the viewer can view a 3D image in a pseudo manner. And a video display device for transmitting an opening/closing signal to the shutter glasses to link the shutter with the different video, wherein the video display device is in a 2D viewing mode while displaying 3D video. Based on a detection unit that detects a switching operation to the 2D viewing mode, the time at which the image in the 2D viewing mode is switched and displayed on the display unit and the shutter correspond to the 2D viewing mode. And a calculation unit that calculates a first time for transmitting a first opening/closing signal that causes the shutter glasses to be in the first state so that the times are the same for the first time at the first time. A transmission unit that transmits an opening/closing signal to the shutter glasses,
It is a stereoscopic image display system.

According to one embodiment of the present invention, shutter glasses are alternately switched to allow a viewer's left and right eyes to view different images displayed on a display unit, and shutter glasses are provided with an opening/closing signal to cause the viewer to view a 3D image in a pseudo manner. A video display device that transmits the shutter and links the shutter to the different video, the detection unit detecting a switching operation to a 2D viewing mode during display of a 3D video, and the detection unit based on a detection result by the detection unit. The shutter glasses are set to the first so that the time when the image in the 2D viewing mode is switched and displayed on the display unit and the time when the shutter is in the first state for supporting the 2D viewing mode are the same. A calculation unit that calculates a first time for transmitting a first opening/closing signal to be in a state, and a transmission unit that transmits the first opening/closing signal to the shutter glasses at the first time.
It is a stereoscopic image display device.

One mode of the present invention is shutter glasses which alternately switch between shutters to allow the viewer's left and right eyes to view different images displayed on the display unit and to allow the viewer to view a 3D image in a pseudo manner. A method of controlling a stereoscopic image display system, comprising: an image display device that transmits an open/close signal to glasses to link the shutter to the different images, wherein a computer mounted on the image display device is displaying a 3D image. In 2D viewing mode, the time at which the 2D viewing mode image is switched and displayed on the display unit based on the detection result, and the shutter is set to correspond to the 2D viewing mode. A first time for transmitting a first opening/closing signal for setting the shutter glasses in the first state is calculated so that the times for being in one state are the same, and the first opening/closing signal is set for the shutter glasses at the first time. Send to,
This is a stereoscopic image display method.

One mode of the present invention is shutter glasses which alternately switch between shutters to allow the viewer's left and right eyes to view different images displayed on the display unit and to allow the viewer to view a 3D image in a pseudo manner. A program that is executed in a stereoscopic image display system including an image display device that transmits an opening/closing signal to glasses and links the shutter to the different images, and stores a 3D image in a computer installed in the image display device. Since the switching operation to the 2D viewing mode is detected during the display, and the time at which the image in the 2D viewing mode is switched and displayed on the display unit and the shutter correspond to the 2D viewing mode based on the detection result. The first time to transmit the first opening/closing signal for setting the shutter glasses to the first state is calculated so that the times when the shutter glasses are in the first state are the same, and the first opening/closing signal is set to the first time at the first time. Send to the shutter glasses,
It is a program.

  According to the present invention, when the viewing mode is switched from 3D to 2D, it is possible to display a stereoscopic image that does not give the viewer a feeling of strangeness.

It is a block diagram showing an example of composition of a three-dimensional image display system concerning an embodiment of the present invention. 6 is a graph showing a relationship between a frame displayed on a video display unit and an open/closed state of a shutter lens on a time axis when a switching process from 3D to 2D is performed. 7 is a flowchart showing the flow of a concrete switching process from 3D to 2D executed in the stereoscopic image display system S.

  Hereinafter, a stereoscopic image display system according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the stereoscopic video display system S includes a stereoscopic video display device 9 and shutter glasses 14. The stereoscopic video display device 9 alternately displays the left-eye frame and the right-eye frame based on the input video signal, and outputs a shutter opening/closing signal synchronized with the video to the shutter glasses 14. The stereoscopic image display device 9 transmits an open/close signal to the shutter glasses 14 to link the shutters of the shutter glasses 14 with different images.

  The shutter glasses 14 open and close the left and right lenses based on the open/close signal received from the stereoscopic image display device 9. The shutter glasses 14 are devices that allow the viewer's left eye and right eye to view different images by opening and closing the left and right lenses to allow the viewer to view the 3D image in a pseudo manner.

  First, each configuration of the stereoscopic video display device 9 will be described. The stereoscopic video display device 9 is, for example, a video display device for displaying video such as a liquid crystal television receiving device, a liquid crystal monitor, a liquid crystal projector, or the like.

  The video output device 1 is a device that can output video, such as a PC (Personal Computer) or a DVD (Digital Versatile Disc) player that outputs 3D or 2D video. The video output device 1 may be a device connected to the outside of the stereoscopic video display device 9 or may be a drive device built in the stereoscopic video display device 9.

  The video input unit 2 (detection unit) detects the video signal input from the video output device 1, outputs the video signal to the video processing unit 4, and detects the characteristics of the input video including the frame rate based on the video signal. To do.

  The arithmetic processing unit 3 is a microcontroller including a CPU (Central Processing Unit) and a RAM (Random Access Memory) that controls each block by controlling each function. The arithmetic processing unit 3 determines whether or not the viewer has performed a switching operation to the 2D viewing mode based on the input video signal while the 3D video detected by the video input unit 2 is being displayed.

  The video processing unit 4 electrically adjusts the amplitude of the video signal input from the video input unit 2 to adjust the brightness level of the video. For example, when the arithmetic processing unit 3 determines that the switching operation to the 2D viewing mode has been performed by the arithmetic processing unit 3, the video processing unit 4 calculates the time at which the video in the 2D viewing mode is switched and displayed. ..

  The image processing unit 4 requires until the shutter reaches the first state after transmitting the first opening/closing signal for changing the shutter of the shutter glasses 14 to the state (first state) corresponding to the 2D viewing mode. Calculate the first time. The first state is, for example, a mode in which the shutters of the shutter glasses 14 are fully opened and the same image is viewed by the left and right eyes of the viewer via the left and right lenses.

  The image processing unit 4, for example, obtains the round-trip time based on the time when the open-close signal is transmitted and the time when the response signal to the open-close signal received from the shutter glasses is received, and based on the half-round time, The first time required for communication with the shutter glasses 14 is calculated.

  The video processing unit 4 is based on the calculated first time, the time when the video in the 2D viewing mode is switched and displayed on the video display unit 5 and the time when the shutter is in the first state for supporting the 2D viewing mode. The first time for transmitting the first opening/closing signal for putting the shutter glasses in the first state is calculated so that the first and second shutter glasses are in the same state. Note that the combination of the arithmetic processing unit 3 and the video processing unit 4 is an example of the “arithmetic unit C”.

  The video display unit 5 (display unit) is, for example, a video display device such as a liquid crystal or DMD (Digital Mirror Device). The video display unit 5 displays the video generated as an optical image based on the video signal adjusted by the video processing unit 4.

  The operation receiving unit 6 is an input device such as a keyboard that receives a user operation, a remote control light receiving unit that receives a signal from an external input device such as a remote control, or a wireless receiving unit.

  The control signal transmitter 7 wirelessly communicates with the shutter glasses 14 and transmits a control signal for opening and closing the left and right lenses to the shutter glasses 14 to a control signal receiver 10 described later. For wireless communication, for example, means such as infrared rays or Bluetooth (registered trademark) can be used. In addition, in the present embodiment, the control signal transmission unit 7 further has a function of receiving a response signal from the control signal reception unit 10 after the control is executed on the transmitted control signal. The control signal transmitter 7 may perform wired communication with the shutter glasses 14.

  The data storage unit 8 stores data used for controlling video display of 3D video and 2D video. The data storage unit 8 is a storage device such as an HDD (Hard Disk Drive) or a flash memory, for example.

  Next, each component of the shutter glasses 14 will be described. The control signal receiving unit 10 receives the control signal transmitted from the stereoscopic image display device 9 by wireless communication, and outputs the control signal to the shutter driving unit 11.

  The shutter drive unit 11 controls opening/closing of the left-eye shutter 12 and the right-eye shutter 13 based on the control signal from the control signal receiving unit 10. The left-eye shutter 12 and the right-eye shutter 13 are shutter devices provided on the lens portion of the shutter glasses for blocking light. The left-eye shutter 12 and the right-eye shutter 13 are configured so that the shutters open and close in response to a command output from the shutter drive unit 11.

  FIG. 2 is a graph showing the relationship between the frame displayed on the image display unit 5 and the open/close state of the shutter lens on a time axis when the 3D to 2D switching process according to the present invention is performed. Further, FIG. 3 is a flowchart showing a flow of a concrete switching process from 3D to 2D executed in the stereoscopic image display system S. Hereinafter, the operation of the stereoscopic image display system S will be described with reference to FIGS. 1 to 3.

  First, the viewer wears the shutter glasses 14 and reproduces the 3D video from the video output device 1 to start viewing the 3D video (step S1). The video input unit 2 detects a video signal of a 3D video input from the video output device 1, analyzes the detected video signal, and calculates a video frame rate and left and right frame identification information. The video input unit 2 outputs the calculated information to the control signal transmission unit 7 via the arithmetic processing unit 3.

  The control signal transmission unit 7 generates an opening/closing signal for the shutter glasses 14 based on the frame rate and the left and right frame identification information acquired from the video input unit 2, and outputs the control signal to the shutter glasses 14 in synchronization with the frame rate ( Step S2).

  The arithmetic processing unit 3 periodically displays the time (communication time) until the transmitted opening/closing signal reaches the shutter glasses 14 after the control signal transmitting unit 7 transmits the opening/closing signal while displaying the 3D image. Measure (step S3).

  For example, when infrared rays are adopted as the wireless communication system, the arithmetic processing unit 3 stores, in the data storage unit 8, the first time information of the time when the control signal transmission unit 7 transmits the infrared opening/closing signal.

  After the transmitted opening/closing signal is received by the shutter glasses 14 and controlled by the arithmetic processing unit 3, the arithmetic processing unit 3 receives the response signal transmitted from the control signal receiving unit 10 of the shutter glasses 14 at the time when the control signal transmitting unit 7 receives the response signal. 2 The time information is stored in the data storage unit 8. The arithmetic processing unit 3 obtains the round-trip time based on the first time information and the second time information, and further calculates the communication time by halving the round-trip time.

  The arithmetic processing unit 3 determines whether or not the viewer has performed a switching operation to the 2D viewing mode based on the input video signal while the 3D video detected by the video input unit 2 is being displayed (step). S4).

  The switching operation to the 2D viewing mode is, for example, an operation of invalidating the 3D function of the stereoscopic video display device 9 accepted by the OSD (On Screen Display) operation of the stereoscopic video display device 9 or a DVD player or the like. An example is an operation in which the content reproduction mode is switched from 3D to 2D by a menu operation on the video output device 1 side.

  When the video input unit 2 detects a switching operation to the 2D viewing mode, the video input unit 2 outputs the detection result to the video processing unit 4 via the arithmetic processing unit 3. The video processing unit 4 starts the process of reducing the actual luminance due to the amplitude modulation of the video signal (step S5). The process of reducing the actual brightness is, for example, a process of modulating the brightness to a level at which no dazzling is felt with respect to the increase in the perceived brightness due to the shutter being fully opened, for example, about 50% of the normal brightness.

  The video processing unit 4 starts the brightness lowering process of step S5, and at the same time, reads out the display time of one frame calculated based on the frame rate of the video from the data storage unit 8, and the frame corrected to dark by the actual brightness lowering process The time at which the image is first drawn (luminance-lowering frame display time) is calculated (step S6). That is, the video processing unit 4 calculates the time when the video in the 2D viewing mode is switched and displayed on the video display unit 5.

  The image processing unit 4 further calculates a first time (shutter full-open signal transmission time) at which a signal for fully opening the shutters of the left and right lenses of the shutter glasses 14 is transmitted based on the brightness-reduced frame display time obtained in step S6. Yes (step S7).

  Specifically, the total time of the communication time between the image display device and the shutter glasses measured in step S3 and the time when the shutter is fully opened after the opening/closing signal reaches the shutter glasses 14 (shutter open time). Is calculated, and the time that is traced back from the drawing time of the frame with reduced brightness by the total time is set as the shutter full-open signal transmission time.

  Normally, when viewing a 3D image, the viewer opens and closes the left and right shutters in order to prevent crosstalk (a phenomenon in which a frame for one eye is visible with both eyes) during switching between opening and closing the shutters of the left and right lenses of the shutter glasses 14. Set the blanking period to the switching time. Therefore, the blanking time set by the viewer to prevent crosstalk can be used as the shutter open time for obtaining the shutter fully open signal transmission time.

  After setting the shutter fully open signal transmission time, the arithmetic processing unit 3 determines whether the time has reached the shutter fully open signal transmission time (step S8). When the arithmetic processing unit 3 determines that the shutter full-open signal transmission time has been reached (step S8: Yes), the control signal transmitting unit 7 transmits the shutter full-open signal to the shutter glasses 14. The video processing unit 4 reduces the actual brightness due to the amplitude modulation of the video signal and causes the video display unit 5 to display the actual brightness.

  Then, in the shutter glasses 14, the shutter drive unit 11 controls the left-eye shutter 12 and the right-eye shutter 13 based on the shutter full-open signal to fully open the left-eye shutter and the right-eye shutter.

  According to the stereoscopic image display system S described above, the time at which the low-luminance frame is first displayed is calculated in step S6, and in step S7, the luminance is considered while considering the time required to fully open the shutter of the shutter glasses. The optimum time for transmitting the shutter fully open signal is calculated with reference to the lowered frame display time.

  Therefore, according to the three-dimensional image display system S, the shutter full-open signal is transmitted in step S9 so that the timing at which the actual brightness reduction frame is displayed in step S5 and the timing at which the shutters of the shutter glasses are fully opened coincide with each other. You can Therefore, when the viewer performs a switching operation from 3D to 2D, the stereoscopic image display system S does not give a sense of discomfort due to the actual brightness reduction process, and causes the glare caused by the shutter being fully opened. Can be reduced.

[Modification]
In the above embodiment, an example in which the control signal transmitting unit 7 is provided with the light receiving unit (or the data receiving unit) to measure the communication time by using the reflection (response) of the control signal has been described. The configuration is not limited to such a configuration.For example, a fixed value of the communication time according to the wireless communication system is held in the data storage unit 8 in advance, and the shutter full-open signal transmission time is calculated based on the time. May be.

  Some or all of the components of the arithmetic processing unit 3 and the video processing unit 4 described above are realized, for example, by a hardware processor such as a CPU executing a program (software). Some or all of these components are hardware (circuit unit; LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), GPU (Graphics Processing Unit), and the like. It may be realized by (including the circuitry) or by the cooperation of software and hardware.

  The program may be stored in advance in a storage device such as an HDD (Hard Disk Drive) or a flash memory, or in a removable storage medium such as a DVD or a CD-ROM, and the storage medium is a drive. It may be installed by being attached to the device. Further, this computer program may be distributed to the computer via a communication line, and the computer that receives this distribution may execute the program. Further, a part or all of a program executed by a computer such as one or a plurality of CPUs included in the above embodiment can be distributed via a communication line or a computer-readable recording medium.

  Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and includes a design and the like within a range not departing from the gist of the present invention.

1 video output device 2 video input unit 3 arithmetic processing unit 4 video processing unit 5 video display unit 6 operation receiving unit 7 control signal transmitting unit 8 data storage unit 9 stereoscopic video display device 10 control signal receiving unit 11 shutter drive unit 12 for the left eye Shutter 13 Right eye shutter 14 Shutter glasses S Stereoscopic image display system

Claims (7)

The left and right lenses are opened and closed by the shutters to allow the viewer's left and right eyes to view different images displayed on the display unit, and shutter glasses that allow the viewer to view the 3D image in a simulated manner, and the shutter glasses are opened and closed. A stereoscopic image display system comprising: an image display device that transmits a signal to link the shutter to the different images,
The video display device,
A detection unit that detects a switching operation to the 2D viewing mode while displaying the 3D video;
Based on the detection result by the detection unit, the time when the image in the 2D viewing mode is switched and displayed on the display unit and the time when the shutter is in the first state for supporting the 2D viewing mode are the same. So that the shutter glasses will be in the first state, a calculation unit that calculates a first time for transmitting a first opening/closing signal,
A transmitter that transmits the first opening/closing signal to the shutter glasses at the first time.
3D image display system. The calculation unit calculates a first time required for the shutter to be in the first state after transmitting a first opening/closing signal for changing the shutter to the first state to the shutter glasses, and Calculating the first time based on time,
The stereoscopic video display system according to claim 1. The calculation unit obtains a round-trip time based on the time when the open-close signal is transmitted and the time when a response signal to the open-close signal received from the shutter glasses is received, and based on the time obtained by halving the round-trip time, Calculate the first time,
The stereoscopic image display system according to claim 2. The arithmetic unit calculates the first time based on a fixed value of communication time according to a wireless communication system,
The stereoscopic video display system according to claim 1. The shutter is alternately switched to allow the left and right eyes of the viewer to view different images displayed on the display unit, and a 3D image is simulated to the viewer. An image display device that links different images,
A detection unit that detects a switching operation to the 2D viewing mode while displaying the 3D video;
Based on the detection result by the detection unit, the time when the image in the 2D viewing mode is switched and displayed on the display unit and the time when the shutter is in the first state for supporting the 2D viewing mode are the same. So that the shutter glasses will be in the first state, a calculation unit that calculates a first time for transmitting a first opening/closing signal,
A transmitter that transmits the first opening/closing signal to the shutter glasses at the first time.
3D image display device. The shutter glasses are alternately switched to allow the viewer's left and right eyes to view different images displayed on the display unit, and shutter glasses that allow the viewer to view a 3D image in a pseudo manner, and an opening/closing signal is transmitted to the shutter glasses. A method for controlling a stereoscopic image display system including an image display device that links the shutter to the different images,
A computer installed in the video display device,
Detects the operation to switch to 2D viewing mode while displaying 3D video,
Based on the detection result, the time when the image in the 2D viewing mode is switched and displayed on the display unit and the time when the shutter is in the first state for supporting the 2D viewing mode are the same, Calculating a first time for transmitting a first opening/closing signal for setting the shutter glasses to the first state,
Transmitting the first opening/closing signal to the shutter glasses at the first time,
3D image display method. The shutter glasses are alternately switched to allow the viewer's left and right eyes to view different images displayed on the display unit, and shutter glasses that allow the viewer to view a 3D image in a pseudo manner, and an opening/closing signal is transmitted to the shutter glasses. A program executed in a stereoscopic image display system including an image display device that links the shutter to the different images,
The computer installed in the video display device,
Detects the operation to switch to the 2D viewing mode during the display of 3D video,
Based on the detection result, the time when the image in the 2D viewing mode is switched and displayed on the display unit and the time when the shutter is in the first state for supporting the 2D viewing mode are the same, Calculate a first time to transmit a first opening/closing signal for setting the shutter glasses to the first state,
Transmitting the first opening/closing signal to the shutter glasses at the first time,
program.

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