JP2012034229A - Stereoscopic image display system, display device, and eyeglasses for stereoscopic image - Google Patents

Abstract

To provide a stereoscopic video display system, a display device, and stereoscopic video glasses capable of obtaining an optimal stereoscopic video effect even when a user tilts his / her head from a horizontal state.
A stereoscopic video display system includes a display device capable of displaying a stereoscopic video image, and separates the video image from the display device into a right-eye image and a left-eye image, which are incident on a user's right eye and left eye, respectively. 3D image glasses configured to be configured such that the 3D image glasses transmit tilt angle detection means for detecting an angle of inclination of the 3D image glasses and information on the tilt angle to the display device. The display device includes: a receiving unit configured to receive the tilt angle information from the stereoscopic video glasses; and a video rotating unit configured to rotate the stereoscopic video image according to the tilt angle. Have.
[Selection] Figure 1

Description

  Embodiments described herein relate generally to a stereoscopic video display system, a display device, and stereoscopic video glasses capable of displaying a stereoscopic video.

  In recent years, flat panel displays capable of viewing stereoscopic video content have been put into practical use. Various methods for displaying stereoscopic images have been proposed. Among them, there are spectacle methods using polarized filter glasses and electronic shutter glasses.

  The electronic shutter glasses incorporate a shutter that is linked to the image, and when the right-eye image is displayed on the display, the left-eye shutter of the glasses closes and the right-eye shutter opens, so only the right-eye image is displayed. Can be seen. When the left-eye video is displayed, the right-eye shutter of the glasses is closed and the left-eye shutter is opened, so that only the left-eye video is visible. By closing and opening the shutter of the glasses electronically in synchronism with the video displayed on the display, the video with parallax can be seen alternately on the left and right eyes.

JP 2002-341289 A

  In a display device that presents an image with parallax to the left and right eyes to display a stereoscopic image, the horizontal shift direction of the right-eye image and the left-eye image to be displayed is fixed in the horizontal direction of the display screen. is there. Therefore, an optimal stereoscopic image effect cannot be obtained unless the horizontality of the left and right eyes is maintained. For this reason, a user wearing 3D image glasses is forced to maintain a level so as not to tilt his head in order to obtain an optimal 3D image effect. This is one of the causes of fatigue caused to users when viewing stereoscopic images.

  An object of the present invention is made in view of the above-described circumstances, and a stereoscopic image display system, a display device, and a stereoscopic image that can obtain an optimal stereoscopic image effect even when a user tilts his / her head from a horizontal state. It is to provide video glasses.

  In order to achieve the above object, according to the embodiment, a stereoscopic video display system is capable of displaying a stereoscopic video image, and separating the video from the display device into a right-eye video and a left-eye video. Stereoscopic image glasses configured to be incident on the right eye and the left eye of the user, respectively, and the stereoscopic image glasses include an inclination angle detection unit that detects an inclination angle of the stereoscopic image glasses, and the inclination Transmitting means for transmitting corner information to the display device, the display device receiving the tilt angle information from the stereoscopic video glasses, and for the stereoscopic video according to the tilt angle. Image rotation means for rotating the image of the image.

1 is a block diagram showing a configuration of a stereoscopic video display system according to an embodiment. The perspective view which showed the external appearance of the display apparatus. The perspective view which showed the external appearance of the spectacles for stereoscopic images. The figure which showed the state which rotated the image | video for stereoscopic images. The flowchart which showed the operation | movement procedure of the rotation process of the image | video for stereoscopic images. The figure which showed the case where the part which does not have an image | video produced in the corner of the screen by rotating the image | video for stereoscopic images. The figure which showed the case where the part which does not have an image | video produced in the corner of a screen by rotating the image | video for stereoscopic images. The figure which showed the state which enlarged the overscan of the image | video for stereoscopic images.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of a stereoscopic video display system 1 according to the embodiment. The stereoscopic video display system 1 includes a display device 2 and stereoscopic video glasses 3.

  In the display device 2, the antenna 4 is an antenna for terrestrial digital broadcast or satellite digital broadcast for receiving broadcast radio waves transmitted from the broadcast station 22. The tuner 5 selects a broadcast signal of a desired channel from broadcast signals of terrestrial digital broadcast or satellite digital broadcast. The tuner 5 is composed of a plurality of tuner units, and can receive a plurality of broadcasts at the same time.

  The demodulator 6 demodulates corresponding to each digital broadcast modulation method. Terrestrial digital broadcast signals are demodulated into digital video and audio signals by OFDM (Orthogonal Frequency Division Multiplexing) demodulation, and satellite digital broadcast signals are demodulated into digital video signals and audio signals by PSK (Phase Shift Keying) demodulation and output to the signal processing unit 7. Is done.

  The signal processing unit 7 selectively performs predetermined digital signal processing on the digital video signal and audio signal supplied from the demodulator 6, and outputs them to the video processing unit 8 and the audio processing unit 9. The signal processing unit 7 has functions such as an MPEG (Moving Picture Experts Group) encoder, an MPEG decoder, and a video / audio decoder.

  The video processing unit 8 converts the digital video data input from the signal processing unit 7 into a format that can be displayed on the display screen 10 or arbitrarily adjusts the display color, and outputs it to the display screen 10. To display the image. The audio processing unit 9 converts the digital audio data input from the signal processing unit 7 into an analog audio signal that can be reproduced by the speaker 11, and then outputs the analog audio signal to the speaker 11 to reproduce the audio.

  The display device 2 is centrally controlled by a CPU (Central Processing Unit) 13 for all the operations including the reception operation described above. The demodulator 6, the signal processing unit 7, the video processing unit 8, and the audio processing unit 9 are connected to the CPU 13 via the data bus 12.

  A RAM (Random Access Memory) 14 is a read / write memory that stores various data necessary for data processing of the CPU 13, and operates as a buffer memory that stores video data and the like. A ROM (Read Only Memory) 15 is a read-only memory and stores a control program executed by the CPU 13.

  The flash memory 16 is a non-volatile semiconductor memory that can be rewritten and does not lose data even when the power is turned off. The flash memory 16 stores setting data related to display on the display screen 10 set by the user. For example, setting values such as brightness and contrast are listed.

  The operation receiving unit 17 receives the operation signal transmitted from the operation unit 18 and transfers it to the CPU 13. The operation unit 18 is, for example, a remote controller using a wireless communication such as infrared or Bluetooth, a wired or wireless keyboard, and the like, and sends an operation signal. The operation receiving unit 17 receives an operation signal from the remote controller, the keyboard, or the like.

  The communication control unit 19 generates a control signal to be transmitted to the stereoscopic video glasses 3 based on an instruction from the CPU 13, and transmits the control signal to the stereoscopic video glasses 3 via the transceiver 20 using an antenna or the like. Further, the communication control unit 19 and the transmitter / receiver 20 have a function of receiving means for receiving the tilt angle information 23 of the stereoscopic video glasses 3 transmitted from the stereoscopic video glasses 3.

  The image rotation control unit 21 configured by the video processing unit 8 and the CPU 13 calculates the magnitude of video rotation based on the tilt angle information 23 transmitted from the stereoscopic video glasses 3, rotates the video, and displays the display screen 10. To display.

  Note that the display device 2 may not include the antenna 4, the tuner 5, and the demodulator 6. In such a case, the demodulated video / audio signal may be input from an external tuner or demodulator. In addition, the display device 2 may not include the audio processing unit 9 and the speaker 11. In such a case, an external audio processing device and a speaker may be used.

  In the stereoscopic video glasses 3, the control unit 31 includes an MCU (Micro Controller Unit) which is an embedded microprocessor in which a computer system is integrated into one integrated circuit, and includes peripheral functions such as ROM, RAM, and I / O related functions. And controls the overall operation of the stereoscopic video glasses 3.

  The control unit 31 has functions of a sensor control unit 31a, a shutter control unit 31b, and a communication control unit 31c. These functions are applications executed by the MCU of the control unit 31 and are normally stored in the ROM in the control unit 31 and read and executed by the MCU when used.

  The sensor control unit 31a receives the output signal of the tilt sensor 33 mounted on the stereoscopic video glasses 3, converts it to a signal suitable for communication, and passes through the communication control unit 31c, the transmitter / receiver 35 such as an antenna, etc. The tilt angle information 23 is transmitted to the display device 2.

  The tilt sensor 33 detects the tilt angle of the stereoscopic video glasses 3 when the user tilts his head. There are various tilt sensors, such as those using Hall elements and magnets, and those using liquids and capacitance sensors. The tilt sensor 33 outputs a signal having a predetermined magnitude from the horizontal position of the stereoscopic video glasses 3 in accordance with the magnitude of the tilt. The sensor control unit 31a receives the output signal of the tilt sensor 33. The sensor control unit 31a and the tilt sensor 33 constitute a tilt angle detection unit.

  The shutter control unit 31b controls the opening / closing operation of the right-eye liquid crystal shutter 34a and the left-eye liquid crystal shutter 34b based on the shutter control signal transmitted from the display device 2. When the right eye image is displayed on the display device 2, the liquid crystal shutters 34 a and 34 b close the left eye liquid crystal shutter 34 b and open the right eye liquid crystal shutter 34 a, so that only the right eye image can be seen. When the left-eye video is displayed, conversely, the right-eye liquid crystal shutter 34a of the glasses is closed and the left-eye liquid crystal shutter 34b is opened, so that only the left-eye video is visible.

  The communication control unit 31c receives the control signal sent from the display device 1 via the transmitter / receiver 35, and transmits the shutter control signal to the shutter control unit 31b. Further, the communication control unit 31 c transmits the tilt angle information 23 to the display device 2 via the transceiver 35.

  FIG. 2 is a perspective view showing an overview of the display device 2. The display device 2 includes a housing 40 and a stand 41 that supports the housing 40. The housing 40 has a display panel 42 such as a liquid crystal panel or a PDP panel disposed on the front side, and a frame (not shown) that supports the display panel 42 disposed on the back side of the display panel 42. A circuit board and a power supply circuit (not shown) for driving the display panel 42 are installed on the frame.

  The outer surface is surrounded by a front cover 43 that covers a part of the front side, top surface, bottom surface, and both side surfaces of the housing 40, and a back cover 44 that covers a part of the back surface side, top surface, bottom surface, and both side surfaces of the housing 40. ing. The display screen 10 is a display portion inside the window 43 a of the front cover 43 of the display panel 42. The transceiver 20 is disposed inside the front cover 43 on the front side.

  FIG. 3 is a perspective view showing an overview of the stereoscopic video glasses 3. The stereoscopic video glasses 3 are configured by rims 46a and 46b, a bridge 47, armatures 48a and 48b, temples 49a and 49b, and liquid crystal shutters 34a and 34b. The temples 49a and 49b are rotatably attached to the armatures 48a and 48b by hinges 50a and 50b.

  Inside the bridge 47, a transmitter / receiver 35 that receives a control signal sent from the display device 2 and a tilt sensor 33 that detects the tilt of the stereoscopic video glasses 3 are provided. The control unit 31 is stored inside the left arm 48b, and a power switch 51 is provided outside the left arm 48b. A battery 52 that supplies power for operating the liquid crystal shutters 34a and 34b and the tilt sensor 33 is provided in a portion of the left temple 49b close to the armature 48b.

  FIG. 4 is a diagram illustrating a state in which a stereoscopic video image is rotated. FIG. 4A shows a stereoscopic video image displayed on the display screen 10 of the display device 2. FIG. 4B shows the stereoscopic video glasses 3. When the user tilts his / her head while wearing the stereoscopic video glasses 3, the stereoscopic video glasses 3 are also tilted from the horizontal state. FIG. 4B shows a state in which the stereoscopic video glasses 3 are inclined at an angle A1 from the horizontal state in the direction in which the right eye side is raised. The stereoscopic video glasses 3 indicated by a solid line are in a horizontal state, and the stereoscopic video glasses 3 indicated by a broken line are in a state inclined at an angle A1.

  In FIG. 4A, an image 53 indicated by a solid line is an image when the stereoscopic image glasses 3 are in a horizontal state, and an image 54 indicated by a broken line is a state in which the stereoscopic image glasses 3 is inclined at an angle A1. It is a picture of time. The image 54 after rotation is rotated by an angle A2 with respect to the image 53 before rotation. Note that, in FIG. 4, the temporal change of the video is ignored in explaining the state of the video rotation. In addition, the right-eye video and the left-eye video are different from the video for the right eye, but in the figure, both videos are not shown, and both videos are recognized as one stereoscopic video by the viewer. Show.

  The angle A2 may be equal to the angle A1. Further, as long as there is no difference in stereoscopic video effect for the user, there may be a difference between the angle A2 and the angle A1 within the range. The size of the angle A2 with respect to the angle A1 may be appropriately determined depending on the performance of the display device 2 and the stereoscopic video glasses 3.

  FIG. 5 is a flowchart showing an operation procedure of a rotation process of a stereoscopic video. In S11, the sensor control unit 31a of the stereoscopic image glasses 3 receives the output signal of the inclination sensor 33 mounted on the stereoscopic image glasses 3, and detects the inclination angle from the horizontal position. In S <b> 12, the sensor control unit 31 a converts the signal into a signal suitable for communication, and transmits the tilt angle information 23 to the display device 2 via the communication control unit 31 c and the transceiver 35.

  In S <b> 13, the communication control unit 19 of the display device 2 receives the tilt angle information 23 of the stereoscopic video glasses 3 transmitted from the stereoscopic video glasses 3 via the transceiver 20. In S <b> 14, the image rotation control unit 21 calculates the magnitude of image rotation based on the tilt angle information 23 transmitted from the stereoscopic video glasses 3. In S <b> 15, the image rotation control unit 21 rotates the stereoscopic video and displays it on the display screen 10.

  As described above, the tilt of the stereoscopic video glasses 3 is detected by the sensor control unit 31 a and the tilt sensor 33, the detected tilt angle information 23 is transmitted to the display device 2, and the image rotation control unit 21 of the display device 2 is used. By calculating the rotation angle of the image based on the tilt angle information 23 and displaying the rotated stereoscopic video image, an optimal stereoscopic video effect can be obtained even when the user tilts his / her head from the horizontal state. .

  FIG. 6 is a diagram illustrating an example where a stereoscopic video image is rotated and a portion without a video image is generated at a corner of the screen. This shows an example in which the tilt angle of the stereoscopic video glasses 3 is the angle B1, and the rotation angle of the stereoscopic video image corresponding thereto is the angle B2.

  The video 55 is a video obtained by rotating the overscanned original video by an angle B2. In the display device 2, in order to hide distortion and noise at the edge of the image, the upper, lower, left and right peripheral parts of the screen of the sent original video are not cut off and displayed. It is said to be overscan. The video displayed on the display screen 10 is cut off from several percent to several tens percent of the peripheral portion of the original image.

  The size of the image 55 is several to tens of percent larger than the size of the display screen 10, but when the rotation angle of the image 55 is increased as shown by the angle B2, the upper left corner and the lower right corner of the display screen 10 are displayed. In this case, portions without images (hereinafter referred to as black display portions) 56a and 56b are generated. Since the black display portions 56a and 56b do not look good, it is desirable not to display them. For this purpose, the angle at which the stereoscopic video image is rotated may be set to an angle smaller than the rotation angle at which there are no video images at the four corners of the screen.

  FIG. 7 is a diagram illustrating a case where a stereoscopic image is rotated and a portion without an image is not generated at the corner of the screen. The rotation angle of the image 55 is an angle C, and the angle is set such that the black display portions 56a and 56b in the upper left corner and the lower right corner are not generated.

  In this example, although the rotation angle C cannot follow the inclination angle B1 of the stereoscopic image glasses 3, the optimal stereoscopic image effect may not be obtained, but the black display portions 56a and 56b are not displayed. It is useful for users who prioritize making things.

  FIG. 8 is a diagram illustrating a state in which the overscan of a stereoscopic video image is increased. In order to prevent the black display portions 56a and 56b from being displayed while maintaining the rotation angle B2 of the image 55 in FIG.

  This is a method of increasing the overscan of a stereoscopic video image when a stereoscopic video image is rotated and a portion having no video image is generated at the corner of the screen. Although there are many video portions that cannot be displayed because they do not fit in the display screen 10 at the periphery of the video 57, it is useful for users who prioritize obtaining an optimal stereoscopic video effect without displaying the black display portions 56a and 56b. .

  The image rotation control unit 21 of the display device 2 changes from displaying a stereoscopic video image to displaying a normal video image (two-dimensional video image) when the inclination angle of the stereoscopic video glasses 3 exceeds a predetermined size. You may switch. For example, when the inclination angle of the stereoscopic video glasses 3 exceeds 15 degrees, it is conceivable to switch from the stereoscopic video to the two-dimensional video.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Stereoscopic image display system 2 Display apparatus 3 Stereoscopic glasses 7 Signal processing part 8 Video processing part 10 Display screen 12 Bus 13 CPU
14 RAM
15 ROM
16 Flash memory 17 Operation receiving unit 18 Operation unit 19 Communication control unit 20 Transmitter / receiver 21 Image rotation control unit 23 Inclination angle information 31 Control unit 31a Sensor control unit 31b Shutter control unit 31c Communication control unit 33 Inclination sensor 34a Liquid crystal shutter for right eye 34b LCD shutter 35 for left eye

Claims (6)

Display device capable of displaying stereoscopic video, and stereoscopic video glasses configured to be separated into right-eye and left-eye images and incident on the right and left eyes of the user, respectively. And
The stereoscopic image glasses include an inclination angle detection unit that detects an inclination angle of the stereoscopic image glasses, and a transmission unit that transmits information on the inclination angle to the display device.
The display device includes a receiving unit configured to receive the tilt angle information from the stereoscopic video glasses and a video rotating unit configured to rotate the stereoscopic video image according to the tilt angle. Receiving means for receiving information on the tilt angle of the stereoscopic image glasses from the stereoscopic image glasses;
And a video rotation means for rotating a stereoscopic video image according to the tilt angle.   The display device according to claim 2, wherein the image rotation unit rotates the stereoscopic video image at an angle smaller than a rotation angle at which a portion having no video image is formed at four corners of the screen.   The display device according to claim 2, wherein the image rotation means increases the overscan of the stereoscopic video image when the stereoscopic video image is rotated and a portion having no video is generated at a corner of the screen.   The display device according to claim 2, wherein the image rotation means switches from a stereoscopic video image to a normal video image when the tilt angle is greater than or equal to a predetermined size. 3D image glasses configured to separate a right-eye image and a left-eye image from a display device into a right-eye image and a left-eye image, respectively, and enter the right eye and the left eye of a user,
An inclination angle detecting means for detecting an inclination angle from a horizontal position;
Stereoscopic glasses having transmission means for transmitting information on the tilt angle to the display device.

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