WO2012066997A1

WO2012066997A1 - Stereoscopic display system

Info

Publication number: WO2012066997A1
Application number: PCT/JP2011/075821
Authority: WO
Inventors: 亮山川
Original assignee: シャープ株式会社
Priority date: 2010-11-16
Filing date: 2011-11-09
Publication date: 2012-05-24

Abstract

The purpose of the present invention is to provide a stereoscopic display system which can display a stereoscopic image to a viewer regardless of the posture of the viewer. The stereoscopic display system is provided with: a display panel (12) on which a stereoscopic image is displayed; a tilt detection unit (21) for detecting a left/right tilt of the face of a viewer wearing stereoscopic glasses (22); a tilt determination unit (34) for determining whether the left/right tilt of the face of the viewer detected by the tilt detection unit (21) satisfies any of a predetermined plurality of conditions; and an image alteration unit (36) for displaying to the viewer the stereoscopic image, which is provided correspondingly with the conditions, when the left/right tilt of the face of the viewer detected by the tilt detection unit (21) satisfies any of the plurality of conditions.

Description

3D display system

The present invention relates to a stereoscopic display system that displays a stereoscopic image to an observer using stereoscopic glasses.

Conventionally, a stereoscopic display system that shows a stereoscopic image to an observer using special glasses is known. For example, Japanese Patent Laid-Open No. 2010-117437 (Patent Document 1) describes light transmission of optical shutter glasses in synchronization with an image switching cycle of a liquid crystal display that alternately displays right-eye images and left-eye images. A 3D (three-dimensional) display device for controlling the state is described.

However, in the 3D display device described in Patent Document 1, even when an observer views a stereoscopic image (a right-eye image and a left-eye image) while lying on a sofa or the like, a stereoscopic image There was a problem that could not be seen.

An object of the present invention is to provide a stereoscopic display system having a novel structure capable of showing a stereoscopic image to an observer regardless of the posture of the observer.

The stereoscopic display system according to the present invention includes a display panel on which a stereoscopic image is displayed, an inclination detection unit that detects an inclination of the face of an observer wearing stereoscopic glasses, and a detection by the inclination detection unit. An inclination determination unit that determines which of a plurality of predetermined conditions the inclination of the observer's face to the left and right satisfies, and the inclination of the observer's face detected by the inclination detection unit to the left and right An image switching unit configured to allow an observer to view the stereoscopic image provided corresponding to the condition when any one of the plurality of conditions is satisfied.

According to the stereoscopic display system of the present invention, a stereoscopic image can be shown to the observer regardless of the posture of the observer.

1 is a block diagram showing a schematic configuration of a stereoscopic display system as a first embodiment of the present invention. FIG. 2 is a plan view showing a schematic configuration of pixels of a liquid crystal panel in the stereoscopic display system shown in FIG. 1. Explanatory drawing which shows the relationship between the glasses for stereoscopic vision and the image for right eyes and the image for left eyes which are displayed on a liquid crystal panel in the state in which the observer's face is directly facing the liquid crystal panel. Description showing the relationship between the stereoscopic glasses and the right-eye image and the left-eye image displayed on the liquid crystal panel in a state where the observer's face is inclined 90 degrees to the left with respect to a reference line extending in the vertical direction Figure. Description showing the relationship between the stereoscopic glasses and the right-eye image and the left-eye image displayed on the liquid crystal panel in a state where the observer's face is inclined 90 degrees to the right with respect to a reference line extending in the vertical direction Figure. The block diagram which shows schematic structure of the three-dimensional display system as 2nd embodiment of this invention. The block diagram which shows schematic structure of the three-dimensional display system as 3rd embodiment of this invention. The block diagram which shows schematic structure of the three-dimensional display system as 4th embodiment of this invention. The block diagram which shows schematic structure of the three-dimensional display system as an application example of 4th embodiment of this invention.

A stereoscopic display system according to an embodiment of the present invention includes a display panel on which a stereoscopic image is displayed, an inclination detection unit that detects an inclination of the face of the observer wearing the stereoscopic glasses, An inclination determination unit that determines which of a plurality of predetermined conditions the inclination of the observer's face detected by the inclination detection unit satisfies a predetermined condition, and the left and right of the observer's face detected by the inclination detection unit An image switching unit configured to cause an observer to show the stereoscopic image provided corresponding to the condition when the inclination to the image satisfies any of the plurality of conditions (first image) Constitution).

In the first configuration, a stereoscopic image corresponding to the left / right inclination of the observer's face can be seen. As a result, the stereoscopic image can be shown to the viewer regardless of the posture of the viewer.

According to a second configuration, in the first configuration, the plurality of conditions include that an observer's face is inclined 90 degrees to the left with respect to a reference line extending in a vertical direction, and the observer's face is Inclining 90 degrees to the right with respect to the reference line is included. In such a configuration, when the observer's face is tilted 90 degrees to the left with respect to the reference line, a stereoscopic image viewed with the left eye of the observer, and the observer's face on the right side with respect to the reference line When viewed at 90 degrees, the stereoscopic image viewed with the right eye of the observer is the same. Further, when the observer's face is inclined 90 degrees to the left with respect to the reference line, the stereoscopic image viewed with the observer's right eye, and the observer's face is inclined 90 degrees to the right with respect to the reference line. The stereoscopic image viewed with the left eye of the observer is the same as the viewer. Therefore, the types of stereoscopic images can be reduced.

In the third configuration, in the first or second configuration, the image switching unit generates the stereoscopic image. In such a configuration, it is not necessary to prepare a stereoscopic image in advance. In particular, when employed in combination with the second configuration, it is possible to reduce the burden when the image switching unit generates the stereoscopic image.

The fourth configuration further includes a switching operation unit that is operated when an observer changes the type of the stereoscopic image in any one of the first to third configurations, and the inclination determination unit includes: Based on the switching operation signal from the switching operation unit, it is determined that the condition is satisfied. In such a configuration, the observer can freely change the type of the stereoscopic image.

According to a fifth configuration, in any one of the first to fourth configurations, the image switching unit is configured such that the left-right tilt of the face of the observer detected by the tilt detection unit satisfies the plurality of conditions. When any of the above conditions is satisfied, the image processing apparatus includes a glasses control unit that controls a light transmission state of the stereoscopic glasses so that the viewer can see the stereoscopic image provided corresponding to the condition. A glasses controller is provided in the stereoscopic glasses. In such a configuration, the stereoscopic image that can be seen in the stereoscopic glasses can be made different for each observer. As a result, a plurality of observers can view a stereoscopic image in a free posture.

A sixth configuration includes a plurality of the stereoscopic glasses in the fifth configuration, each of the stereoscopic glasses includes the tilt detection unit, and each of the image switching units is detected by each tilt detection unit. The stereoscopic image provided corresponding to the condition that the right / left inclination of the observer's face satisfies is shown to the observer. In such a configuration, since the tilt detection unit is provided in each of the stereoscopic glasses, it is easy to detect the tilt of each observer's face to the left and right.

A seventh configuration is the stereoscopic image according to the sixth configuration, wherein the image switching unit is provided in accordance with a condition that the left-right inclination of the observer's face detected by each inclination detection unit is satisfied. Is further provided with an image changing unit that sequentially outputs the images in a predetermined order. In such a configuration, the stereoscopic image output by the image changing unit is limited to those that satisfy the condition. For this reason, the types of stereoscopic images output by the image changing unit can be reduced.

According to an eighth configuration, in the sixth configuration, the image switching unit further includes an image changing unit that sequentially outputs the stereoscopic images provided in correspondence with each of the plurality of conditions in a predetermined order. The glasses control unit includes the stereoscopic image provided corresponding to the condition that the right and left tilt of the face of the observer wearing the stereoscopic glasses provided with the glasses control unit is satisfied. The light transmission state of the stereoscopic glasses is controlled so as to be shown to the observer. In such a configuration, it is not necessary to change the type of stereoscopic image output by the image changing unit for each condition that the left / right inclination of the observer's face satisfies.

The ninth configuration is a configuration in which, in any one of the first to fifth configurations, the tilt detection unit is provided in the stereoscopic glasses. In such a configuration, it is possible to easily detect the tilt of the observer's face to the left and right.

The tenth configuration is a configuration in which, in any one of the sixth to ninth configurations, the inclination detection unit is an acceleration sensor. In such a configuration, the inclination detecting unit can be easily realized.

The eleventh configuration is a configuration in which, in any one of the first to fifth configurations, the tilt detection unit is a camera that photographs a face of an observer wearing the stereoscopic glasses. In such a configuration, it becomes easy to detect the left / right inclination of the face of the observer.

Hereinafter, more specific embodiments of the present invention will be described with reference to the drawings. In addition, each figure referred below demonstrates the simplified main component required in order to demonstrate this invention among the structural members of embodiment of this invention for convenience of explanation. Therefore, the three-dimensional display system according to the present invention can include arbitrary constituent members that are not shown in the drawings referred to in this specification. Moreover, the dimension of the member in each figure does not represent the dimension of an actual structural member, the dimension ratio of each member, etc. faithfully.

[First embodiment]
FIG. 1 shows a block diagram of a stereoscopic display system 10 as a first embodiment of the present invention. The stereoscopic display system 10 includes a liquid crystal panel 12 as a display panel, a backlight 14, a gate driver 16, a source driver 18, a control device 20, and a tilt detection sensor 21 as a tilt detection unit. In the stereoscopic display system 10, stereoscopic images are shown to an observer by using stereoscopic glasses 22 described later.

Although not shown, the liquid crystal panel 12 includes an active matrix substrate, a counter substrate, and a liquid crystal layer sealed between these substrates.

As shown in FIG. 2, the active matrix substrate included in the liquid crystal panel 12 is provided with a plurality of rows of gate lines 24 and a plurality of columns of source lines 26 in a grid pattern.

The plurality of rows of gate lines 24 are connected to the gate driver 16 (see FIG. 1). The gate driver 16 outputs a gate control signal sent from the display control unit 32 described later to the gate line 24 as a gate voltage. The gate control signal is output by the gate driver 16 with reference to a vertical synchronization signal sent from a display control unit 32 described later.

The plurality of source lines 26 are connected to the source driver 18 (see FIG. 1). The source driver 18 generates a gradation display signal based on the image data of the stereoscopic image (image data of the right eye image and image data of the left eye image) sent from the display control unit 32 described later. To do. The gradation display signal is a signal necessary for gradation display.

The source driver 18 outputs a gradation display signal to the source line 26 as a drive voltage. The source driver 18 outputs a driving voltage corresponding to the gate line 24 selected by the gate driver 16. The output of the gradation display signal by the source driver 18 is performed with reference to a horizontal synchronization signal sent from the display control unit 32 described later.

As shown in FIG. 2, in a plan view of the liquid crystal panel 12, a thin film transistor 28 as a switching element and a pixel electrode 30 are provided in a region surrounded by the gate line 24 and the source line 26. It has been.

The gate electrode of the thin film transistor 28 is connected to the gate line 24. A source electrode of the thin film transistor 28 is connected to the source line 26. The drain electrode of the thin film transistor 28 is connected to the pixel electrode 30. The pixel electrode 30, a counter electrode (not shown), which will be described later, and a liquid crystal layer (not shown) form a charge storage capacitor for storing a given charge.

Further, the counter substrate is arranged at a position facing the region where the plurality of pixels (pixel electrodes 30) are formed on the active matrix substrate. A counter electrode (not shown) is provided on the counter substrate.

In addition, as the liquid crystal panel 12, for example, a transmissive liquid crystal panel or the like can be employed. As the liquid crystal panel 12, for example, a vertical alignment type liquid crystal panel or the like can be employed.

A backlight 14 (see FIG. 1) is disposed on one side in the thickness direction of the liquid crystal panel 12 (the rear side of the liquid crystal panel 12). As the backlight 14, for example, a direct type, an edge light type, a planar light source type, or the like can be adopted. As a light source of the backlight 14, a cold cathode tube, a light emitting diode (LED), etc. are employable, for example.

As shown in FIG. 1, the control device 20 includes a display control unit 32, a tilt determination unit 34, an image change unit 36, and a glasses control unit 38. For example, the control device 20 can be provided on the display device side including the liquid crystal panel 12.

The display control unit 32, the inclination determination unit 34, the image change unit 36, and the glasses control unit 38 can be realized by, for example, an integrated circuit designed exclusively. For example, when the control device 20 includes a central processing unit and a storage device, the display control unit 32, the inclination determination unit 34, the image change unit 36, and the glasses control unit 38 store the central processing unit in the storage device. This can be realized by reading out and executing the program.

The display control unit 32 outputs a vertical synchronization signal to the source driver 18. The vertical synchronization signal is a signal used when driving the source driver 18. The vertical synchronization signal is a pulse signal having a high level (H) and a low level (L).

The display control unit 32 outputs the image data of the stereoscopic image sent from the image changing unit 36 to the source driver 18. The image data of the stereoscopic image includes image data of the right eye image and image data of the left eye image. The right-eye image is a stereoscopic image for viewing with the observer's right eye. The left-eye image is a stereoscopic image for viewing with the left eye of the observer.

The display control unit 32 outputs a horizontal synchronization signal to the gate driver 16. The horizontal synchronization signal is a signal used when driving the gate driver 16. The horizontal synchronization signal is a pulse signal having a high level (H) and a low level (L).

The display control unit 32 outputs a gate control signal to the gate driver 16. The gate control signal is a signal for turning on the gate of the thin film transistor 28. The gate control signal is a pulse signal having a high level (H) and a low level (L).

The display control unit 32 outputs a left / right identification signal to the glasses control unit 38. The left / right identification signal is a signal indicating which of the right-eye image and the left-eye image is displayed on the liquid crystal panel 12. The left / right identification signal is a pulse signal having a high level (H) and a low level (L).

The tilt determination unit 34 determines whether the left / right tilt of the face of the observer wearing the stereoscopic glasses 22 satisfies a predetermined condition based on a detection signal from the tilt detection sensor 21 described later. Predetermined conditions include that the face of the observer is straight toward the liquid crystal panel 12 (the face of the observer is not tilted left and right), and that the face of the observer is left and right with respect to a reference line extending in the vertical direction. Either one may be inclined at a predetermined angle.

The predetermined angle includes, for example, 45 degrees and 90 degrees, but is not limited to these angles. Incidentally, in this embodiment, 90 degrees is adopted as the predetermined angle. The case where the predetermined angle is 90 degrees is, for example, a state where an observer is lying on a sofa or the like.

The determination that the predetermined condition is satisfied is not limited to a case where the observer's face is inclined at a predetermined angle with respect to a reference line extending in the vertical direction. For example, the observer's face may be slightly deviated from a position inclined at a predetermined angle with respect to a reference line extending in the vertical direction. As the position slightly deviated from the position inclined by the predetermined angle, for example, a position within a range of ± 10 degrees around the predetermined angle can be adopted.

The tilt determination unit 34 generates a tilt identification signal based on the detection signal from the tilt detection sensor 21 when the left / right tilt of the observer's face satisfies a predetermined condition, and the tilt determination signal is converted into an image change unit. To 36. The tilt identification signal is a signal indicating the left / right tilt of the observer's face. Specifically, the face of the observer is straight toward the liquid crystal panel 12, is inclined to the left by a predetermined angle (90 degrees in the present embodiment) with respect to a reference line extending in the vertical direction, or extends in the vertical direction. It is a signal indicating whether or not a predetermined angle (90 degrees in the present embodiment) is inclined to the right with respect to the reference line.

The image changing unit 36 selects a stereoscopic image to be output to the display control unit 32 from among a plurality of types of stereoscopic images based on the tilt identification signal sent from the tilt determining unit 34, and selects the selected stereoscopic image. The visual image is output to the display control unit 32. As a plurality of types of stereoscopic images, a stereoscopic image to be displayed when the observer's face is directly facing the liquid crystal panel 12 and a predetermined leftward line with respect to a reference line in which the observer's face extends in the vertical direction are predetermined. A stereoscopic image to be displayed when the angle (90 degrees in the present embodiment) is tilted and a predetermined angle to the right side with respect to a reference line in which the observer's face extends in the vertical direction (90 degrees in the present embodiment) There is a stereoscopic image displayed when tilting.

As shown in FIG. 3, when the face of the observer wearing the stereoscopic glasses 22 faces straight to the liquid crystal panel 12 (the right-eye liquid crystal shutter 22R and the left-eye glasses included in the stereoscopic glasses 22). When the liquid crystal shutters 22L are arranged in the horizontal direction), the right-eye image seen by the observer's right eye is an image (Right image) seen from the right side of the observation target from the front, and is observed by the observer's left eye The image for the left eye to be viewed is an image (Left image) in which the observation target is viewed from the left slightly from the front.

As shown in FIG. 4, when the face of the observer wearing the stereoscopic glasses 22 is tilted to the left by a predetermined angle (90 degrees in this embodiment) with respect to a reference line extending in the vertical direction ( When the right-eye liquid crystal shutter 22R and the left-eye liquid crystal shutter 22L of the stereoscopic glasses 22 are arranged in the vertical direction with the left-eye liquid crystal shutter 22L on the lower side), viewing with the right eye of the observer The image for the right eye is an image (Upper image) in which the observation target is viewed from above the front, and the image for the left eye viewed with the left eye of the observer is an image in which the observation target is viewed from slightly below the front ( Lower image).

As shown in FIG. 5, when the face of the observer wearing the stereoscopic glasses 22 is inclined to the right by a predetermined angle (90 degrees in this embodiment) with respect to a reference line extending in the vertical direction ( When the right-eye liquid crystal shutter 22R and the left-eye liquid crystal shutter 22L of the stereoscopic glasses 22 are arranged in the vertical direction with the right-eye liquid crystal shutter 22R on the lower side), viewing with the right eye of the observer The image for the right eye is an image (Lower image) in which the observation target is viewed from slightly below the front, and the image for the left eye viewed with the left eye of the observer is an image in which the observation target is viewed from slightly above the front ( Upper image).

In the present embodiment, the image for the right eye viewed with the face of the observer wearing the stereoscopic glasses 22 tilted to the left by a predetermined angle (90 degrees in the present embodiment) with respect to the reference line extending in the vertical direction. And the left-eye image viewed in a state in which the face of the observer wearing the stereoscopic glasses 22 is inclined to the right by a predetermined angle (90 degrees in the present embodiment) with respect to the reference line extending in the vertical direction. It is. In addition, an image for the left eye viewed in a state where the face of the observer wearing the stereoscopic glasses 22 is tilted to the left by a predetermined angle (90 degrees in the present embodiment) with respect to a reference line extending in the vertical direction, The image of the right eye viewed in a state where the face of the observer wearing the viewing glasses 22 is tilted to the right by a predetermined angle (90 degrees in the present embodiment) with respect to a reference line extending in the vertical direction is the same. Therefore, it is possible to reduce the types of right-eye images and left-eye images necessary for showing a stereoscopic image to the observer.

The image changing unit 36 (see FIG. 1) generates stereoscopic image data (image data for the right eye and image data for the left eye) based on the input image data of the two-dimensional image. To do. As a method for generating a stereoscopic image (right eye image and left eye image) from a two-dimensional image, for example, the following method can be employed. First, position information in the depth direction when performing three-dimensional display is set for each pixel position in the two-dimensional image. Based on the set position information in the depth direction, pixel movement amounts of the right-eye image and the left-eye image are determined. Based on the determined pixel movement amount, an image for the right eye and an image for the left eye are generated. The image changing unit 36 outputs the generated image data to the display control unit 32.

The image data itself input to the image changing unit 36 may be image data for the right eye image and image data for the left eye image. In this case, the image changing unit 36 does not need to generate image data for the right eye image and image data for the left eye image from the input image data. As a result, the image changing unit 36 can output the input image data of the right eye image and the image data of the left eye image itself to the display control unit 32.

The glasses controller 38 (see FIG. 1) controls the light transmission state of the stereoscopic glasses 22. As shown in FIGS. 3 to 5, the stereoscopic glasses 22 have a right-eye liquid crystal shutter 22 </ b> R positioned in front of the right eye of the observer in a state worn by the observer, and a state worn by the observer. And a left-eye liquid crystal shutter 22L positioned in front of the left eye of the observer. As the

liquid crystal shutters

22R and 22L, for example, a liquid crystal panel or the like can be employed.

The glasses control unit 38 controls the opening and closing of the right-eye liquid crystal shutter 22R and the left-eye liquid crystal shutter 22L based on the left / right identification signal sent from the display control unit 32. When a right / left identification signal indicating that a right-eye image is displayed on the liquid crystal panel 12 is sent, the right-eye liquid crystal shutter 22R included in the stereoscopic glasses 22 is opened (light transmission state), and The left-eye liquid crystal shutter 22L included in the stereoscopic glasses 22 is set in a closed state (light non-transmissive state). When a left / right identification signal indicating that a left-eye image is displayed on the liquid crystal panel 12 is sent, the left-eye liquid crystal shutter 22L included in the stereoscopic glasses 22 is opened (light transmission state), and The right-eye liquid crystal shutter 22R included in the stereoscopic glasses 22 is set in a closed state (light non-transmissive state).

The stereoscopic glasses 22 are provided with an inclination detection sensor 21 (see FIG. 1). The tilt detection sensor 21 can be provided, for example, on a frame or a vine of the stereoscopic glasses 22.

The tilt detection sensor 21 may be provided integrally with the stereoscopic glasses 22 or may be retrofitted to the stereoscopic glasses 22. When the tilt detection sensor 21 is retrofitted to the stereoscopic glasses 22, the existing stereoscopic glasses 22 can be used.

The tilt detection sensor 21 detects the tilt of the face of the viewer wearing the stereoscopic glasses 22 to the left and right. As the tilt detection sensor 21, for example, a uniaxial acceleration sensor, a biaxial acceleration sensor, a triaxial acceleration sensor, a gyro sensor, or the like can be employed. Incidentally, a triaxial acceleration sensor is employed in the present embodiment. As the triaxial acceleration sensor, for example, a capacitance type, a piezoresistive type, a gas temperature distribution type, or the like can be adopted.

The detection signal from the tilt detection sensor 21 is sent to the tilt determination unit 34. As a detection signal transmission method, for example, a wireless method using infrared rays or a wired method using cables or the like can be employed. When the detection signal is transmitted wirelessly, a signal output unit for transmitting the detection signal to the inclination determination unit 34 can be provided, for example, in the frame of the stereoscopic glasses 22 or the like.

In such a stereoscopic display system 10, when the display control unit 32 drives the gate driver 16 and the source driver 18, the right-eye image and the left-eye image are alternately displayed on the liquid crystal panel 12.

In the stereoscopic display system 10, the glasses control unit 38 synchronizes with the cycle in which the right-eye image and the left-eye image are alternately displayed on the liquid crystal panel 12, and the right-eye liquid crystal shutter 22 </ b> R and the left-eye liquid crystal shutter. 22L is opened alternately. Thereby, the image for right eyes and the image for left eyes can be shown to an observer alternately. As a result, it is possible to show a stereoscopic image to the observer.

In the stereoscopic display system 10, the image changing unit 36 changes the type of the right-eye image and the left-eye image based on the tilt identification signal from the tilt determination unit 34. For example, it is assumed that an observer sitting on a sofa lies on the sofa with the left side facing down. In this case, the tilt identification signal from the tilt determination unit 34 is a predetermined angle on the left side with respect to a reference line in which the viewer's face extends in the vertical direction from a signal indicating a state in which the viewer's face is straight toward the liquid crystal panel 12. It changes to a signal indicating a tilted state (in this embodiment, 90 degrees). As a result, the image changing unit 36 changes the image for the right eye from the right image to the upper image, and changes the image for the left eye from the left image to the lower image.

Therefore, in the stereoscopic display system 10, even when the observer's posture changes, the stereoscopic image can be shown to the observer.

In the present embodiment, an image switching unit is realized by the display control unit 32, the image change unit 36, and the glasses control unit 38.

[Second Embodiment]
Next, a stereoscopic display system 42 as a second embodiment of the present invention will be described based on FIG. In the second embodiment described below and the third to fourth embodiments described later, members and parts having the same structure as in the first embodiment are the same as those in the first embodiment. A detailed description thereof will be omitted by attaching reference numerals.

Compared with the stereoscopic display system 10 of the first embodiment, the stereoscopic display system 42 of the present embodiment is not provided with the inclination detection sensor 21, and instead is provided with a camera 44 as an inclination detection unit. ing. The camera 44 is provided for photographing the face of the observer wearing the stereoscopic glasses 22.

As the camera 44, for example, a video camera using a CCD (Charge Coupled Device) image sensor as a solid-state imaging device can be employed. For example, the camera 44 can be provided so as to be embedded in a portion located above the display area of the liquid crystal panel 12 in the housing in which the liquid crystal panel 12 is assembled. For example, the camera 44 may be attached to the outside of the housing in which the liquid crystal panel 12 is assembled. When the stereoscopic image is shown to the observer on the liquid crystal panel 12, the camera 44 always captures the face of the observer from the front.

The camera 44 is connected to the tilt determination unit 34. As a result, image data about the face of the observer photographed by the camera 44 can be sent to the inclination determination unit 34.

The inclination determination unit 34 recognizes the face of the observer photographed by the camera 44 and detects the right / left inclination of the face. The inclination of the observer's face to the left and right can be realized by using pattern recognition, for example. In this embodiment, for example, the positions of the right-eye liquid crystal shutter 22R and the left-eye liquid crystal shutter 22L of the stereoscopic glasses 22 worn by the observer are recognized, and the center points of the respective

liquid crystal shutters

22R and 22L are determined. By referring to the angle formed by the connecting straight line and the reference line extending in the vertical direction, the tilt of the observer's face to the left and right is detected.

In such a stereoscopic display system 42, the stereoscopic glasses 22 are not provided with the tilt detection sensor 21, so that the stereoscopic glasses 22 can be reduced in weight.

[Third embodiment]
Next, a stereoscopic display system 46 as a third embodiment of the present invention will be described with reference to FIG. The stereoscopic display system 46 of the present embodiment is provided with a switching operation unit 48 as compared to the stereoscopic display system 10 of the first embodiment. The switching operation unit 48 is operated when the observer changes the type of the stereoscopic image. As the switching operation unit 48, for example, an operation panel or a remote control provided in the stereoscopic display system 46 can be employed.

The switching operation unit 48 includes, for example, an operation button indicating that the observer's face is tilted to the right or left by a predetermined angle, a numeric button operated when the observer inputs an appropriate angle, and fine adjustment of the angle. An operation button or the like is provided. As the operation of the switching operation unit 48, for example, a method of pressing an operation button indicating that the observer's face is tilted to the left or right is a predetermined angle, or the observer's face is tilted to an appropriate number button It is possible to adopt a method of inputting by operating, a method of operating an operation button for finely adjusting the angle, or the like.

When the observer operates the switching operation unit 48, the switching operation unit 48 outputs a switching operation signal to the inclination determination unit 34. The inclination determination unit 34 generates an inclination identification signal based on the switching operation signal and outputs the inclination identification signal to the image change unit 36.

In such a stereoscopic display system 46, the type of stereoscopic image displayed on the liquid crystal panel 12 can be changed even when the observer operates the switching operation unit 48.

[Fourth embodiment]
Next, a stereoscopic display system 50 as a fourth embodiment of the present invention will be described based on FIG. In the stereoscopic display system 50 according to the present embodiment, the control device 20 does not include the glasses control unit 38 as compared with the stereoscopic display system 10 according to the first embodiment. That is, in the present embodiment, the glasses control unit 38 is not provided on the display device side including the liquid crystal panel 12. Instead, in the present embodiment, a glasses control unit 38 is provided on the stereoscopic glasses 22 side. In the present embodiment, an inclination determination unit 52 is provided on the stereoscopic glasses 22 side.

The tilt determination unit 52 determines, based on a detection signal from the tilt detection sensor 21, whether the tilt of the face of the observer wearing the stereoscopic glasses 22 satisfies the predetermined condition. Predetermined conditions include that the face of the observer is straight toward the liquid crystal panel 12 (the face of the observer is not tilted left and right), and that the face of the observer is left and right with respect to a reference line extending in the vertical direction. Either one may be inclined at a predetermined angle.

The tilt determination unit 52 generates a tilt identification signal based on the detection signal from the tilt detection sensor 21 when the left / right tilt of the observer's face satisfies a predetermined condition, and the tilt identification signal is used as the glasses control unit. 38. The tilt identification signal is a signal indicating the left / right tilt of the observer's face. Specifically, the face of the observer is straight toward the liquid crystal panel 12, is inclined to the left by a predetermined angle (90 degrees in the present embodiment) with respect to a reference line extending in the vertical direction, or extends in the vertical direction. It is a signal indicating whether or not a predetermined angle (90 degrees in the present embodiment) is inclined to the right with respect to the reference line.

The inclination determination unit 52 can be realized, for example, by reading out and executing a dedicated design integrated circuit or a program stored in the storage device by the central processing unit.

In this embodiment, the display control unit 32 outputs an image identification signal to the glasses control unit 38 instead of the left / right identification signal. The image identification signal is a signal indicating the type of stereoscopic image displayed on the liquid crystal panel 12. As the image identification signal, for example, a signal indicating that a right image is displayed on the liquid crystal panel 12, a signal indicating that a left image is displayed on the liquid crystal panel 12, and an upper image is displayed on the liquid crystal panel 12. For example, a signal indicating that a lower image is displayed on the liquid crystal panel 12.

Further, in the present embodiment, the glasses control unit 38, based on the image identification signal sent from the display control unit 32 and the tilt identification signal sent from the tilt determination unit 52, the right-eye liquid crystal shutter 22R and Controls the opening and closing of the left-eye liquid crystal shutter 22L. As the opening / closing control of the right-eye liquid crystal shutter 22R and the left-eye liquid crystal shutter 22L by the glasses control unit 38, the following modes and the like can be adopted.

An image identification signal indicating that a right image is displayed on the liquid crystal panel 12 is sent from the display control unit 32, and an inclination identification signal indicating that the face of the observer is directly facing the liquid crystal panel 12 is displayed. An image identification signal indicating that the upper image is displayed on the liquid crystal panel 12 is sent from the display control unit 32 when the tilt judgment unit 52 sends the image, and the observer's face is vertically oriented. When an inclination identification signal indicating that the predetermined angle (90 degrees in this embodiment) is inclined to the left with respect to the extended reference line is sent, a lower image is further displayed on the liquid crystal panel 12. Is sent from the display control unit 32, and the face of the observer is inclined to the right by a predetermined angle (90 degrees in this embodiment) with respect to a reference line extending in the vertical direction. When the tilt identification signal indicating that the stereoscopic eyeglass 22 is sent, the right eye liquid crystal shutter 22R included in the stereoscopic glasses 22 is opened (light transmission state), and the left eye liquid crystal shutter 22L included in the stereoscopic glasses 22 is provided. Is in a closed state (light non-transmission state).

An image identification signal indicating that the Left image is displayed on the liquid crystal panel 12 is sent from the display control unit 32, and an inclination identification signal indicating that the face of the observer is directly facing the liquid crystal panel 12. An image identification signal indicating that a lower image is displayed on the liquid crystal panel 12 is sent from the display control unit 32 when it is sent from the tilt determination unit 52, and the observer's face is in the vertical direction. When an inclination identification signal indicating that the predetermined angle (90 degrees in this embodiment) is inclined to the left side with respect to the extended reference line is sent, an upper image is further displayed on the liquid crystal panel 12. Is sent from the display control unit 32, and the face of the observer is inclined to the right by a predetermined angle (90 degrees in this embodiment) with respect to a reference line extending in the vertical direction. Is sent to the left eye liquid crystal shutter 22L included in the stereoscopic glasses 22, and the right eye liquid crystal shutter 22R included in the stereoscopic glasses 22 is received. Is in a closed state (light non-transmission state).

In the present embodiment, the inclination determination unit 34 outputs an observation state identification signal to the image change unit 36 instead of the inclination identification signal. The observation state identification signal is generated in consideration of the number of observers, the right and left inclinations of all observer faces, and the like. As the observation state identification signal, for example, a signal indicating that all observer faces are straight toward the liquid crystal panel 12, or one of the left and right sides with respect to a reference line extending in the vertical direction. A signal indicating that the head is inclined by a predetermined angle (90 degrees in the present embodiment), and further, the face of a certain observer is directed straight toward the liquid crystal panel 12, and the face of another observer extends in the vertical direction. There is a signal indicating that a predetermined angle (in this embodiment, 90 degrees) is inclined to either the left or right with respect to the reference line.

In the present embodiment, the image changing unit 36 is for stereoscopic viewing that is output to the display control unit 32 from among a plurality of types of stereoscopic viewing images based on the observation state identification signal sent from the tilt determining unit 34. The image is selected, and the selected stereoscopic image is output to the display control unit 32. Examples of the multiple types of stereoscopic images include a Right image, a Left image, an Upper image, and a Lower image.

When the observation state identification signal sent from the inclination determination unit 34 is a signal indicating that all the faces of the viewers are straight toward the liquid crystal panel 12, the image changing unit 36 selects the right image and the left image. Are selected as stereoscopic images to be output to the display control unit 32. Then, the image changing unit 36 transmits the image data of the stereoscopic image (Right image, Left image) to the display control unit 32 so that the Right image and the Left image are alternately displayed on the liquid crystal panel 12. Output.

The observation state identification signal sent from the inclination determination unit 34 is inclined at a predetermined angle (90 degrees in the present embodiment) to either the left or right with respect to a reference line in which the faces of all observers extend in the vertical direction. In the case of a signal indicating this, the image changing unit 36 selects the Upper image and the Lower image as stereoscopic images to be output to the display control unit 32. Then, the image changing unit 36 sends the image data of the stereoscopic image (Upper image, Lower image) to the display control unit 32 so that the upper image and the lower image are alternately displayed on the liquid crystal panel 12. Output.

The observation state identification signal sent from the inclination determination unit 34 is either left or right with respect to a reference line in which a certain observer's face is straight toward the liquid crystal panel 12 and another observer's face extends in the vertical direction. When the signal indicates that the image is tilted to a predetermined angle (90 degrees in the present embodiment), the image changing unit 36 displays a right image, a left image, an upper image, and a lower image as a display control unit. The image is selected as a stereoscopic image to be output to 32. Then, the image changing unit 36 displays the stereoscopic image (Right image, Upper image) so that the Right image, the Upper image, the Left image, and the Lower image are sequentially displayed in this order on the liquid crystal panel 12. , Left image, Lower image) is output to the display control unit 32. The image data of the right image is output after the image data of the lower image.

In such a stereoscopic display system 50, the stereoscopic image shown to the observer can be switched on the stereoscopic glasses 22 side. Thereby, even when there are a plurality of observers, the plurality of observers do not have to view the stereoscopic image displayed on the liquid crystal panel 12 with the same posture. As a result, when there are a plurality of observers, the degree of freedom of the posture of each observer can be ensured.

[Application example of the fourth embodiment]
As an application example of the fourth embodiment, for example, there is a stereoscopic display system 54 as shown in FIG. In the stereoscopic display system 54, the control device 20 does not include the tilt determination unit 34 and the image change unit 36. Instead, the control device 20 includes an image generation unit 56.

The image generation unit 56 generates image data of a stereoscopic image (image data of a right eye image and image data of a left eye image) based on the input two-dimensional image image data. As a method for creating a stereoscopic image (right eye image and left eye image) from a two-dimensional image, for example, the following method can be employed. First, position information in the depth direction when performing three-dimensional display is set for each pixel position in the two-dimensional image. Based on the set position information in the depth direction, pixel movement amounts of the right-eye image and the left-eye image are determined. Based on the determined pixel movement amount, an image for the right eye and an image for the left eye are generated. The image generation unit 56 outputs the generated image data to the display control unit 32.

Therefore, in the present embodiment, the image generation unit 56 displays the stereoscopic image so that the right image, the upper image, the left image, and the lower image are sequentially displayed in this order on the liquid crystal panel 12. The image data of (Right image, Upper image, Left image, Lower image) is output to the display control unit 32. The image data of the right image is output after the image data of the lower image.

When the image data for the right eye image and the image data for the left eye image are directly input to the display control unit 32, the image generation unit 56 may not be provided.

The image generation unit 56 can be realized, for example, by an integrated circuit designed exclusively or by the central processing unit reading and executing a program stored in the storage device.

In this embodiment, an image switching unit is realized by the display control unit 32, the glasses control unit 38, and the image generation unit 56.

As mentioned above, although embodiment of this invention has been explained in full detail, these are illustrations to the last and this invention is not limited at all by the above-mentioned embodiment.

For example, in the first to fourth embodiments, instead of the liquid crystal panel 12, the display panel is a PDP (plasma display panel), an organic EL (electroluminescence) panel, an inorganic EL panel, or an FED (field emission display). A panel or the like may be adopted.

Claims

A display panel on which a stereoscopic image is displayed;
An inclination detector that detects the inclination of the face of the observer wearing the stereoscopic glasses to the left and right;
An inclination determination unit that determines which of a plurality of predetermined conditions the inclination of the observer's face to the left and right detected by the inclination detection unit is satisfied;
When the left-right inclination of the observer's face detected by the inclination detection unit satisfies any of the plurality of conditions, the stereoscopic image provided corresponding to the condition is shown to the observer A stereoscopic display system, comprising:
The plurality of conditions include that the observer's face is inclined 90 degrees to the left with respect to a reference line extending in the vertical direction, and that the observer's face is inclined 90 degrees to the right with respect to the reference line. The stereoscopic display system according to claim 1, wherein:
The stereoscopic display system according to claim 1 or 2, wherein the image switching unit generates the stereoscopic image.
A switching operation unit that is operated when an observer changes the type of the stereoscopic image;
The stereoscopic display system according to any one of claims 1 to 3, wherein the inclination determination unit determines that the condition is satisfied based on a switching operation signal from the switching operation unit.
The image switching unit, when the left-right inclination of the observer's face detected by the inclination detection unit satisfies any of the plurality of conditions, the stereoscopic image provided corresponding to the condition Is provided with a glasses control unit that controls the light transmission state of the stereoscopic glasses,
The stereoscopic display system according to any one of claims 1 to 4, wherein the glasses controller is provided in the stereoscopic glasses.
There are a plurality of stereoscopic glasses,
Each of the stereoscopic glasses is provided with the tilt detection unit,
The said image switching part makes an observer show the said image for stereoscopic vision provided corresponding to the conditions which the inclination to the right and left of the observer's face which each inclination detection part detected satisfy | fills. The stereoscopic display system described.
The image switching unit further includes an image changing unit that sequentially outputs the stereoscopic images provided in correspondence with a condition that the left and right inclinations of the observer's face detected by each inclination detection unit are satisfied in a predetermined order. The stereoscopic display system according to claim 6, further comprising:
The image switching unit further includes an image changing unit that sequentially outputs the stereoscopic images provided corresponding to the plurality of conditions in a predetermined order,
The glasses control unit is configured to observe the stereoscopic image provided corresponding to the condition that the right and left tilt of the face of the observer wearing the stereoscopic glasses provided with the glasses control unit is satisfied. The stereoscopic display system according to claim 6, wherein a light transmission state of the stereoscopic glasses is controlled so as to be shown to a person.
The stereoscopic display system according to any one of claims 1 to 5, wherein the tilt detection unit is provided in the stereoscopic glasses.
The stereoscopic display system according to any one of claims 6 to 9, wherein the tilt detection unit is an acceleration sensor.
The stereoscopic display system according to any one of claims 1 to 5, wherein the tilt detection unit is a camera that captures a face of an observer wearing the stereoscopic glasses.