JP5465083B2 - 3D image display device and 3D image display system - Google Patents

Description

  The present invention relates to a stereoscopic video display device that displays stereoscopic video (hereinafter also referred to as 3D video) and a stereoscopic video display system that includes shutter-type 3D glasses.

  Due to the difference between the positions of both eyes, different images are shown in the left eye and the right eye. This difference in appearance is called parallax, and the brain can perceive a sense of depth by the parallax between the image captured in the left eye and the image captured in the right eye, and the object can be viewed in three dimensions. In the conventional stereoscopic video display device, the left eye image and the right eye image are alternately output to the display, and the right eye shutter and the left eye shutter of the shutter-type 3D glasses are alternately synchronized with the display switching timing. A system is known that allows a viewer to recognize a stereoscopic image by opening and closing (see Patent Document 1).

Japanese Patent No. 4251952

  The 3D image is an image in which parallax occurs in the left-right direction so that it looks three-dimensional when the display is viewed from the front without tilting the head. For this reason, for example, when viewing with a lying-down posture or viewing the display with the head tilted to the right or left, a double-blurred image is generated and a normal image cannot be viewed. Such an image makes the user's eyes tired and lacks consideration for health.

  Therefore, in view of the above-described problems, an object of the present invention is to provide a stereoscopic video display device and a stereoscopic video display system that allow normal videos to be viewed in any posture.

A stereoscopic video display device according to the present invention is a stereoscopic video display device that displays on a display a video that can be viewed through stereoscopic video while wearing shutter-type 3D glasses, and displays a left-eye image and a right-eye image. A timing generation unit that generates a timing for alternately displaying on the display; a reception unit that receives a response signal including the tilt amount of the shutter-type 3D glasses from the shutter-type 3D glasses; and a response signal from the shutter-type 3D glasses at the reception unit And a display position changing unit that adjusts the parallax between the left-eye image and the right-eye image, and the display position changing unit has an inclination of the shutter-type 3D glasses with respect to the horizontal direction from 0 degrees to 90 degrees. as increases, it reduces the amount of parallax.

  The stereoscopic video display system of the present invention is a stereoscopic video display system that includes a stereoscopic video display device and shutter-type 3D glasses, and the shutter-type 3D glasses detect inclination of the shutter-type 3D glasses. And a response signal transmission unit that transmits a response signal including the tilt amount to the stereoscopic video display device, and the display position changing unit adjusts the parallax according to the tilt amount. For example, in a state where the user's head is tilted by 90 °, the user can view a blur-free video by displaying a 2D image in which the parallax between the left-eye image and the right-eye image is zero.

The stereoscopic image display apparatus according to the present invention includes a receiving unit that receives a response signal including the tilt amount of the shutter-type 3D glasses from the shutter-type 3D glasses, and a left-eye according to the response signal from the shutter-type 3D glasses at the receiving unit. A display position change unit that adjusts the parallax between the image for the right eye and the image for the right eye , and the display position change unit increases the amount of parallax as the inclination of the shutter-type 3D glasses with respect to the horizontal direction increases from 0 degrees to 90 degrees. the you small. By including the tilt amount of the shutter-type 3D glasses in the response signal and adjusting the parallax based on this tilt angle, it is possible to view an image without blur even when the head is tilted.

  In the stereoscopic video display system of the present invention, the shutter-type 3D glasses include an inclination detection unit that detects an inclination amount of the shutter-type 3D glasses, and a response signal transmission unit that transmits a response signal including the inclination amount to the stereoscopic image display device. The display position changing unit adjusts the parallax according to the amount of tilt. For example, in a state where the user's head is tilted by 90 °, the user can view a blur-free video by displaying a 2D image in which the parallax between the left-eye image and the right-eye image is zero.

1 is a block diagram illustrating a configuration of a stereoscopic video display system according to Embodiment 1. FIG. It is a figure which shows 3D image data of a Blu-ray standard. 6 is a diagram illustrating an operation of the stereoscopic video display system according to Embodiment 1. FIG. It is a figure which shows the principle by which a thing looks three-dimensional by parallax. It is a figure which shows a mode that the image for right eyes and the image for left eyes were separately displayed on the display. It is a figure which shows a mode that the image for right eyes and the image for left eyes were continuously displayed on the display. It is a flowchart which shows operation | movement of the control part of 3D glasses. It is a flowchart which shows operation | movement of the control part of a three-dimensional video display apparatus. It is a figure which shows the display display according to the inclination amount of 3D glasses. 6 is a block diagram illustrating a configuration of a stereoscopic video display system according to Embodiment 2. FIG. 10 is a flowchart illustrating an operation of an inclination amount correction unit of the stereoscopic video display device according to the second embodiment.

(Embodiment 1)
<Configuration>
FIG. 1 is a block diagram illustrating a configuration of a stereoscopic video display system according to Embodiment 1. The stereoscopic video display system according to the present embodiment includes a stereoscopic video display device and shutter-type 3D glasses 11.

  First, regarding the configuration of the stereoscopic video display apparatus, the stereoscopic video display apparatus is a state before transmitting the information converted to be transmitted by the broadcast wave included in the antenna 1 and 3D image data that receives the 3D image data from the broadcast wave. Are provided with an image decoding unit 3 and an audio decoding unit 14 for decoding the 3D image data demodulated by the demodulating unit 2 into an image and a sound that can be recognized by a person. The antenna 1 is, for example, a commercially available Yagi / Uda antenna that receives terrestrial digital broadcasting, a parabolic antenna that receives BS digital broadcasting, or the like.

  Furthermore, the stereoscopic video display apparatus includes a display 13 and an image format conversion unit 4 that converts 3D image data of various transmission methods decoded by the image decoding unit 3 into a format that can be displayed on the display 13.

  The 3D image data displayed on the stereoscopic image display device is not limited to the one received by the antenna 1, and the image format conversion unit 4 converts the 3D image data reproduced on the reproduction device 12 into a format that can be displayed on the display 13. To do. The playback device 12 is a Blu-ray disc media playback device such as a Blu-ray player. Although the playback device 12 is illustrated as a component of the stereoscopic video display device, the playback device 12 includes not only a case where the playback device 12 is built in the device but also a device outside the device.

  The stereoscopic video display device further includes a left-eye image storage unit 5, a right-eye image storage unit 6, a timing generation unit 7, a transmission unit 8, a reception unit 9, a control unit 10, and a display position change unit 21. The 3D image data includes left-eye image data and right-eye image data. The image format conversion unit 4 stores the left-eye image data in the left-eye image storage unit 5 and the right-eye image storage unit 6. Are respectively written with right-eye image data. The written image data is displayed on the display 13, but the timing generator 7 controls ON / OFF of the backlight of the display 13 in synchronization with the display timing of the image, and further 3D in synchronization with the display timing of the image. A shutter control signal for controlling the open / close operation of the left and right shutters of the glasses 11 is generated. The shutter control signal is transmitted from the transmission unit 8 to the 3D glasses 11, and the left and right shutters are opened and closed accordingly. The receiving unit 9 receives the response signal from the 3D glasses 11 and notifies the control unit 10. In the control unit 10, software for controlling each part of the stereoscopic video display device operates. The display position changing unit 21 obtains the amount of inclination of the 3D glasses 11 from the control unit 10 and calculates the amount of parallax corresponding thereto, and the image format conversion unit 4 corrects the 3D image data based on the amount of parallax to generate an image. Write to the storage units 5 and 6.

  As described above, the stereoscopic video display device according to the present embodiment receives the response signal from the timing generation unit 7 that generates the timing for alternately displaying the left-eye image and the right-eye image on the display 13 and the shutter-type 3D glasses 11. , And a display position changing unit 21 that adjusts the parallax between the left-eye image and the right-eye image in accordance with a response signal from the shutter-type 3D glasses 11 in the receiving unit 9.

  Next, the configuration of the 3D glasses 11 will be described. The 3D glasses 11 include a shutter control signal receiver 17, a glasses controller 15, a shutter driver 19, an inclination detector 16, a response signal generator 20, and a response signal transmitter 18. The shutter control signal receiving unit 17 receives a shutter control signal from the stereoscopic video display device. The glasses controller 15 opens and closes the shutter by controlling the shutter driver 19 based on the shutter control signal received by the shutter control signal receiver 17. The inclination detection unit 16 detects the inclination of the 3D glasses 11 using, for example, an acceleration sensor. The glasses control unit 15 further notifies the response signal generation unit 20 of the tilt amount of the 3D glasses 11 detected by the tilt detection unit 16 and instructs the generation of the response signal, and the response signal generation unit 20 sends the response signal accordingly. Generate. The response signal transmission unit 18 transmits the response signal to the reception unit 9 of the stereoscopic video display device.

  That is, the shutter-type 3D glasses 11 include an inclination detection unit 16 that detects the amount of inclination of the shutter-type 3D glasses 11 and a response signal transmission unit that transmits a response signal including the amount of inclination to the stereoscopic video display device. The display position changing unit 21 adjusts the parallax according to the corrected inclination.

<Operation>
First, a transmission method of 3D image data of the Blu-ray standard will be described. The 3D image data includes left-eye image data and right-eye image data. FIG. 2 shows 3D image data transmitted by a frame sequential method unified by the Blu-ray standard. The image data for the left eye and the image data for the right eye are each composed of 1920 × 1080 pixels.

  When the image format conversion unit 4 reads the 3D image data, the left-eye image data is left to the left-eye image data storage unit 5 and the right-eye image data is to the right-eye image data storage unit 6 with 1920 × 1080 pixels. , Write at intervals of 1/240 seconds.

  The timing generation unit 7 turns on the backlight of the display 13 in synchronization with the completion of the writing of the left-eye image data (right-eye image data), and starts writing the left-eye image data (right-eye image data). Synchronously turn off the backlight. Since the image data for the right eye and the image data for the left eye are alternately written every 1/240 seconds, the image for the left eye and the image for the right eye, which are 1920 × 1080 pixel HD (High Definition) images, are displayed on the display 13. Are switched and displayed sequentially every 1/120 second.

  The timing generation unit 7 generates a shutter control signal for the 3D glasses 11 in synchronization with the switching between the left-eye image and the right-eye image, and transmits the shutter control signal from the transmission unit 8. While the left-eye image is displayed on the display 13, the shutter drive unit 19 of the 3D glasses 11 opens the left-eye shutter and closes the right-eye shutter. Conversely, while the right-eye image is displayed on the display 13, the right-eye shutter is opened and the left-eye shutter is closed.

  FIG. 3 illustrates image data output by the image format conversion unit 4 during 3D viewing and the timing of turning on / off the backlight of the display 13 and opening / closing the shutter of the 3D glasses 11. When the image format conversion unit 4 completes the writing of the data for the left eye, the timing generation unit 7 turns on the backlight of the display 13, and the shutter drive unit 19 of the 3D glasses 11 opens only the shutter for the left eye. . At this time, the user views the left eye image only with the left eye.

  When the image format conversion unit 4 starts to write right-eye data, the timing generation unit 7 turns off the backlight, and the shutter drive unit 19 closes the left-eye shutter. When the image format conversion unit 4 completes the writing of the right-eye data, the timing generation unit 7 turns on the backlight, and the shutter drive unit 19 opens only the right-eye shutter. At this time, the user views the right-eye image only with the right eye.

  When such an operation (left-eye data writing → right-eye data writing) is repeated at a period of 1/240 seconds, the user alternately sees the left-eye image and the right-eye image, and the image appears in the left eye. Since the brain recognizes the sense of depth based on the parallax of the image in the right eye, it is possible to see objects in three dimensions.

  FIG. 4 is a diagram illustrating the principle that an object looks three-dimensional due to parallax. When there is a parallax between the left-eye image and the right-eye image, the focus of the left-eye image viewed with the left eye and the right-eye image viewed with the right eye is closer to the front than the actual display position. Tied. As a result, the image appears to pop out.

  FIG. 5 shows a state in which an image for the right eye and an image for the left eye are separately displayed on the display 13. The left-eye image is shifted to the left from the center of the display due to the parallax. When these images are continuously displayed on the display 13 as shown in FIG. 2, the character “A” is doubled as shown in FIG. When this is viewed through the 3D glasses 11, it looks three-dimensional.

  FIG. 7 is a flowchart showing the operation of the glasses control unit 15 of the 3D glasses 11. When the glasses control unit 15 detects that the shutter control signal receiving unit 17 has received the shutter control signal (step S1), it reads the tilt amount of the 3D glasses 11 from the tilt detection unit 16 (step S2). Furthermore, the glasses control unit 15 instructs the response signal generation unit 20 to generate a response signal on which the tilt amount is superimposed. The response signal is transmitted from the response signal transmission unit to the stereoscopic video reproduction device (step S3). The glasses controller 15 causes the shutter driver 19 to open and close the shutter according to the shutter control signal (step S4).

  FIG. 8 is a flowchart showing the operation of the control unit 10 of the stereoscopic video display device. When the image format conversion unit 4 finishes writing the left-eye image data in the left-eye image storage unit 5 (step S11), the timing generation unit 7 turns on the backlight of the display 13 (step S12), and the left-eye shutter. A shutter control signal instructing to open is transmitted from the transmission unit 8 (step S13). Next, the control unit 10 confirms whether or not there is a response signal from the 3D glasses 11 (step S14), and if there is a response signal, reads the tilt amount of the 3D glasses 11 from the response signal (step S15). The display position changing unit 21 calculates an appropriate amount of parallax of the 3D image from the tilt amount, and determines an amount to shift in the left-right direction of the right-eye image to be displayed next so as to be an appropriate amount of parallax (step S16). ). Thereafter, the timing generation unit 7 turns off the backlight of the display 13 (step S17), and the image format conversion unit 4 shifts the right-eye image data in accordance with the instruction of the display position changing unit 21 to the right-eye image storage unit 5. Write (step S18). When the image format conversion unit 4 finishes writing the right-eye image data in the right-eye image storage unit 6 (step S19), the timing generation unit 7 turns on the backlight of the display 13 (step S20), and the right-eye shutter. A shutter control signal instructing to open is sent from the transmission unit 8 (step S21). Next, the presence / absence of a response signal from the 3D glasses 11 is confirmed (step S22). If there is a response signal, the tilt amount of the 3D glasses 11 is read (step S23). The display position changing unit 21 calculates an appropriate amount of parallax of the 3D image from the amount of inclination, and determines an amount to shift in the left-right direction of the left-eye image to be displayed next so as to be an appropriate amount of parallax (step S24). . Thereafter, the timing generation unit 7 turns off the backlight of the display 13 (step S25), and the image format conversion unit 4 shifts the left-eye image data in accordance with the instruction of the display position changing unit 21, and transfers the left-eye image data to the left-eye image storage unit 5. Write (step S26).

  FIG. 9 is a diagram illustrating how the parallax of the 3D image is adjusted according to the amount of inclination of the 3D glasses 11. In the left figure, the inclination of the 3D glasses 11 is 0 degree, and the left-eye image and the right-eye image are displayed with a shift by the amount of parallax. As the 3D glasses 11 are gradually tilted, the amount of parallax decreases, and when the 3D glasses 11 are tilted 90 degrees to the right or left, the amount of parallax becomes 0 and 2D display is obtained.

  As described above, in the stereoscopic image display system according to the present embodiment, the amount of parallax is changed according to the amount of inclination of the 3D glasses 11, so that the phenomenon that the images when the 3D glasses 11 are tilted appears to be overlapped is improved. The

<Effect>
According to the three-dimensional image display device of the present embodiment, the following effects can be obtained. In other words, the stereoscopic video display apparatus according to the present embodiment is a stereoscopic video display apparatus that displays on the display 13 a video that can be viewed on a stereoscopic video by wearing the shutter-type 3D glasses 11, and is a left-eye image. And a timing generation unit 7 that generates a timing for alternately displaying the right-eye image on the display, a reception unit 9 that receives a response signal from the shutter-type 3D glasses 11, and a shutter-type 3D glasses 11 in the reception unit 9 A display position changing unit that adjusts the parallax between the left-eye image and the right-eye image according to the response signal. By including the tilt of the shutter-type 3D glasses 11 in the response signal and adjusting the parallax based on this tilt, it is possible to view an image without blur even when the head is tilted.

  The stereoscopic video display system according to the present embodiment includes a stereoscopic video display device and shutter-type 3D glasses 11. The shutter-type 3D glasses 11 include an inclination detection unit 16 that detects the amount of inclination of the shutter-type 3D glasses 11 and a response signal transmission unit 18 that transmits a response signal including the amount of inclination to the stereoscopic video display device, and changes the display position. The unit 21 adjusts the parallax according to the tilt amount. For example, in a state where the user's head is tilted by 90 °, the user can view a blur-free video by displaying a 2D image in which the parallax between the left-eye image and the right-eye image is zero.

(Embodiment 2)
<Configuration>
FIG. 10 is a block diagram illustrating a configuration of the stereoscopic video display system according to the second embodiment. The stereoscopic video display system according to the present embodiment includes a stereoscopic video display device and shutter-type 3D glasses 11. In addition to the configuration of the first embodiment, the stereoscopic video display device includes an inclination amount correction unit 22 that corrects the inclination amount of the 3D glasses 11 acquired from the response signal by the control unit 10. Since the configuration other than this is the same as that of the first embodiment, the description thereof is omitted.

<Operation>
FIG. 11 is a flowchart showing the operation of the tilt amount correction unit 22. The tilt amount correction unit 22 reads the tilt amount of the 3D glasses 11 from the control unit 10 (step S31), and compares it with a threshold value (step S32). If the tilt amount is equal to or greater than the threshold value, the correction value is output to the display position changing unit 21 without correction. If the tilt value is equal to or less than the threshold value, the tilt amount is corrected to 0 and output to the display position changing unit 21 (step S33). ).

  The display position changing unit 21 calculates an appropriate amount of parallax of the 3D image from the corrected tilt amount, and determines an amount to be shifted in the left-right direction of the left-eye image (right-eye image) so as to be an appropriate amount of parallax. . Since other operations are the same as those in the first embodiment, description thereof is omitted.

  That is, the stereoscopic video display device includes an inclination amount correction unit 22 that performs correction to make the inclination amount 0 when the inclination amount of the 3D glasses 11 acquired from the response signal is less than a predetermined threshold, and the display position changing unit. 21 adjusts the parallax according to the amount of inclination. Since the parallax is corrected when it exceeds the preset threshold, the parallax is not corrected with a slight inclination set as the error range, but only when the head is tilted greatly, such as the user lying down The parallax is corrected. In this case, if the integral value is used as the tilt amount, the parallax can be corrected only in the case of a long-time tilt, not a temporary one.

  In the present embodiment, the tilt amount is corrected on the stereoscopic image display device side, but the tilt amount correcting unit may be provided on the 3D glasses 11 side to perform the correction.

  That is, the shutter-type 3D glasses include an inclination amount correction unit that corrects the inclination amount to 0 when the inclination amount is less than a predetermined threshold, and the response signal transmission unit 18 includes the corrected inclination amount. A response signal is transmitted to the stereoscopic video display device. Even with such a configuration, since the parallax is corrected when a preset threshold value is exceeded, the parallax is not corrected with a slight inclination set with the error range, and the user is lying down, for example. The parallax is corrected only in the state where the angle is tilted.

<Effect>
The stereoscopic image display system according to the present embodiment has the following effects. That is, the stereoscopic video display device includes an inclination amount correction unit 22 that performs correction to make the inclination amount 0 when the inclination amount of the 3D glasses 11 acquired from the response signal is less than a predetermined threshold, and the display position changing unit. 21 adjusts the parallax according to the amount of inclination. Since the parallax is corrected when it exceeds the preset threshold, the parallax is not corrected with a slight inclination set as the error range, but only when the head is tilted greatly, such as the user lying down The parallax is corrected.

  Alternatively, the shutter-type 3D glasses include an inclination amount correction unit that corrects the inclination amount to 0 when the inclination amount is less than a predetermined threshold, and the response signal transmission unit 18 includes the corrected inclination amount. A response signal is transmitted to the stereoscopic video display device. Even with such a configuration, since the parallax is corrected when a preset threshold value is exceeded, the parallax is not corrected with a slight inclination set with the error range, and the user is lying down, for example. The parallax is corrected only in the state where the angle is tilted.

  DESCRIPTION OF SYMBOLS 1 Antenna, 2 Demodulation part, 3 Image decoding part, 4 Image format conversion part, 5 Left-eye image storage part, 6 Right-eye image storage part, 7 Timing generation part, 8 Transmission part, 9 Reception part, 10 Control part , 11 3D glasses, 12 playback device, 13 display, 14 audio decoding unit, 15 glasses control unit, 16 voltage detection unit, 17 shutter control signal reception unit, 18 response signal transmission unit, 19 shutter drive unit, 20 response signal generation unit , 21 Display position changing unit, 22 Inclination amount correcting unit.

Claims (4)

A stereoscopic video display device that displays on a display a video that allows a user to view a stereoscopic video by wearing shutter-type 3D glasses,
A timing generation unit that generates a timing for alternately displaying an image for the left eye and an image for the right eye on the display;
A receiving unit that receives a response signal including a tilt amount of the shutter-type 3D glasses from the shutter-type 3D glasses ;
A display position changing unit that adjusts a parallax between the left-eye image and the right-eye image according to a response signal from the shutter-type 3D glasses in the receiving unit ;
The display position change unit as the inclination of the shutter 3D glasses with respect to the horizontal direction is increased from 0 to 90 degrees, and wherein the small to Rukoto amount of parallax, a stereoscopic image display device. A stereoscopic video display system comprising the stereoscopic video display device according to claim 1 and shutter-type 3D glasses,
The shutter type 3D glasses are:
An inclination detection unit that detects an inclination amount of the shutter-type 3D glasses;
A response signal transmission unit that transmits a response signal including the tilt amount to the stereoscopic video display device,
The display position changing unit adjusts the parallax according to the tilt amount, and the stereoscopic image display system. The stereoscopic image display device further includes an inclination amount correction unit that performs correction to set the inclination amount to 0 when the inclination amount of the 3D glasses acquired from the response signal is less than a predetermined threshold,
The stereoscopic display system according to claim 2, wherein the display position changing unit adjusts the parallax according to the corrected tilt amount. The shutter-type 3D glasses further include an inclination amount correction unit that corrects the inclination amount to 0 when the inclination amount is less than a predetermined threshold,
The stereoscopic video display system according to claim 2, wherein the response signal transmission unit transmits a response signal including the corrected tilt amount to the stereoscopic video display device.

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