CN102970498A - Display method and display device for three-dimensional menu display - Google Patents

Abstract

The invention discloses a display method for realizing a three-dimensional display of a menu, comprising the following steps: setting a perspective projection, setting a window in the perspective projection; dividing the window into a first area and a second area; A two-dimensional menu is formed in the three-dimensional space of the first region and the second region, and the perspective projection of the two-dimensional menu is projected in the first region and the second region; the two-dimensional menu in the first region and the second region The menu performs 3D image processing and outputs a 3D menu. The method for three-dimensional menu display of the present invention draws and translates a two-dimensional menu in a three-dimensional space, so that there is a parallax between the two-dimensional menu projected perspectively into the first area and the two-dimensional menu perspective projected into the second area, which can be used in After the 3D processing module, a three-dimensional menu is formed, which improves the user's experience in using electronic settings. The invention also provides a display device for realizing the three-dimensional display of the menu.

Description

Display method and display device for three-dimensional display of menu

technical field

The invention relates to the field of three-dimensional display of menus, in particular to a method for three-dimensional display of a menu and a device for three-dimensional display.

Background technique

A stereoscopic display device uses the parallax feature of human eyes to present a stereoscopic image with spatial depth information, and usually multiple views with parallax are synthesized through a pixel arrangement algorithm and then output to a stereoscopic display. This disparity map is directly transmitted to the left and right eyes of the viewer, and then a stereoscopic image is synthesized.

At present, stereoscopic displays mainly adopt non-flash 3D technology and shutter 3D technology. By displaying images with parallax and passing them to the left and right eyes of the observer, people can feel immersive without being in a 3D movie theater. However, the stereoscopic display can only achieve the 3D display effect when playing images with disparity maps, and the viewer will not have a stereoscopic sense of distance and space when operating the menu of the stereoscopic display. In this way, the viewer cannot feel the impact of the 3D technology coherently during use, which reduces the experience of the viewer.

In view of this, it is necessary to provide a display method capable of realizing a three-dimensional display of a menu and a display device capable of realizing a three-dimensional display of a menu.

Contents of the invention

The main purpose of the present invention is to provide a display method and a display device, aiming at realizing the three-dimensional display of the menu, thereby improving the experience of the viewers.

In order to achieve the above object, the present invention provides a display method for realizing the three-dimensional display of the menu, comprising the following steps:

setting a perspective projection, setting a window within said perspective projection;

forming a first area and a second area of equal size in the window;

forming a two-dimensional menu in a three-dimensional space corresponding to the first area and the second area, and projecting the two-dimensional menu perspectively in the first area and the second area;

3D image processing is performed on the two-dimensional menus in the first area and the second area and a 3D menu is output.

Preferably, the step of setting a perspective projection, and setting a window in the perspective projection includes:

A three-dimensional space coordinate system is set, and a perspective projection is set in the three-dimensional space coordinate system;

A window is set in the perspective projection such that the size of the window is equal to the size of the display area of the display device.

Preferably, the areas of the first region and the second region are respectively half of the area of the window, and the first region and the second region are arranged side by side along the horizontal or vertical direction of the window.

Preferably, the step of forming a two-dimensional menu in a three-dimensional space corresponding to the first area and the second area, and projecting the two-dimensional menu perspectively on the first area and the second area includes:

drawing a two-dimensional menu in the three-dimensional space directly in front of the first area and projecting the two-dimensional menu perspectively into the first area;

Translating the two-dimensional menu in the three-dimensional space directly in front of the first area along the preset direction to the three-dimensional space in front of the second area, and perspective-projecting the translated two-dimensional menu into the second area, so that The distance between the two-dimensional menu projected perspectively into the first area and the same side of the first area is not equal to the distance between the two-dimensional menu projected perspectively into the second area and the same side of the second area.

Preferably, the translation distance of the two-dimensional menu in three-dimensional space satisfies the following relationship: L=(a_z-z_ot)*coefficient;

Among them, a_z is the Z-axis coordinate value of a certain point on the two-dimensional menu, Coefficient is an adjustment coefficient that can be adjusted according to the actual needs of the system, and z_ot is the Z-axis coordinate value of the concave-convex balance point that reflects the concave-convex effect of the 3D image. Among them, Z-axis is the coordinate axis perpendicular to the plane where the window is located.

Preferably, the step of performing 3D image processing on the two-dimensional menu in the first area and the second area and outputting the 3D menu includes:

performing 3D image processing on the two-dimensional menu formed in the first area and the second area;

The two-dimensional menu after 3D image processing is alternately output to form a 3D menu.

The present invention further provides a display device for realizing three-dimensional display of menus, including:

An operation module for setting a perspective projection and setting a window within the perspective projection;

A processing module, configured to form a first area and a second area of equal size in the window, form a two-dimensional menu in a three-dimensional space corresponding to the first area and the second area, and project the two-dimensional menu in perspective in the first area and the second area;

The display module is used for performing 3D image processing on the two-dimensional menus in the first area and the second area and outputting the 3D menus.

Preferably, the operation module includes a perspective projection setting unit and a window setting unit, the perspective projection setting unit is used to set a three-dimensional space coordinate system, and perspective projection is set in the three-dimensional space coordinate system, and the window setting unit is used to set a three-dimensional space coordinate system. A window is set in the perspective projection, so that the size of the window is equal to the size of the display area of the display device.

Preferably, the processing module includes a window processing unit, a first processing unit, and a second processing unit; the window processing unit is used to form a first area and a second area of equal size in the window; the first processing unit uses drawing a two-dimensional menu in the three-dimensional space directly in front of the first area and projecting the perspective projection of the two-dimensional menu into the first area; the second processing unit is used to translate the three-dimensional space directly in front of the first area along a preset direction The two-dimensional menu in the space to the two-dimensional menu is located in the three-dimensional space directly in front of the second area, and the perspective projection of the translated two-dimensional menu is projected into the second area, so that the perspective projection of the two-dimensional menu in the first area and the second area The distance between the same side of one area is not equal to the distance between the two-dimensional menu perspective projected into the second area and the same side of the second area.

Preferably, the areas of the first region and the second region are respectively half of the area of the window, and the first region and the second region are arranged side by side along the horizontal or vertical direction of the window.

The method for three-dimensional display of the menu provided by the present invention draws the two-dimensional menu in the three-dimensional space, projects the two-dimensional menu perspectively into the first area, and translates the two-dimensional menu in the three-dimensional space so that the two-dimensional menu can be perspectively projected into the second area, and the distance between the 2D menu projected perspectively into the first area and the same side of the first area and the distance between the 2D menu projected perspectively into the second area and the same side of the second area Not equal, so, for the user, there is a parallax between the menu in the first area and the menu in the second area, and the user receives a picture with parallax and sees a three-dimensional menu, which improves the user's ability to operate the 3D display device. The degree of experience in the process of watching 3D video.

Description of drawings

FIG. 1 is a flowchart of a three-dimensional display method for a menu according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of a three-dimensional space component coordinate system of the present invention;

Fig. 3 is a diagram of the relationship between the menu after perspective projection and the first area and the second area of the window;

FIG. 4 is a block diagram of a display device for realizing stereoscopic display of menus according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the operation module of the display device shown in Fig. 1;

FIG. 6 is a schematic diagram of a processing module of the display device shown in FIG. 1 .

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The invention provides a method capable of realizing three-dimensional display of menus, which can be applied to electronic products with 3D display devices, such as music players, PADs, tablet computers or liquid crystal displays, etc. menu to improve user experience in using electronic products. Please refer to FIG. 1 , which is a flowchart of a three-dimensional display method for a menu in an embodiment of the present invention. In this embodiment, the menu stereoscopic display method includes the following steps:

In step S100, a perspective projection is set, and a window is set in the perspective projection. In this embodiment, step S100 specifically includes: step S110, setting a three-dimensional space coordinate system, and setting a perspective projection in the three-dimensional space coordinate system; step S120, setting a window in the perspective projection, so that the size of the window Equal to the size of the display area of the display device. In this embodiment, the setting of the window in the perspective projection means that the viewpoint of the perspective projection is set on the central axis of the window. By moving the viewpoint on the central axis of the window, the perspective projection just covers the window when projected onto the window. Combined with reference to Figure 2, viewpoint A in the figure is an observation point similar to a camera, and the pyramid surrounded by five points A, B, C, D, and E is the range that viewpoint A can observe, and B, C, D, and E are composed of The window is selected, and the perspective projection to the window coincides with the window by moving the viewpoint A on the Z axis. The size of the window is the size of the display screen of the television, and after the window is translated for a certain distance along the Z axis in the positive direction, it intersects with the perspective projection area at four points F, G, H, and I.

In some embodiments, there are multiple windows. When the user invokes the one that is not projected, the window projected by the perspective projection needs to be moved away through the X and Y axis changes, and then the menu invoked by the user is moved through the X and Y axes. , the movement of the Y axis is transferred to the area covered by the perspective projection. After such setting, when the menu is drawn on the window, a perspective two-dimensional image of the menu can be formed between the window and the viewpoint.

In step S200, a first area and a second area of equal size are formed in the window. In this embodiment, the areas of the first area and the second area are half of the area of the window, and the first area and the second area can be arranged side by side along a predetermined direction, such as the horizontal or vertical direction of the window. When the preset direction is along the horizontal direction of the window, the first area and the second area are side by side; when the default direction is along the vertical direction of the window, the first area and the second area are side by side Way.

In step S300, a two-dimensional menu is formed in the three-dimensional space corresponding to the first area and the second area, and the two-dimensional menu is perspective-projected in the first area and the second area. Specifically, step S300 includes the following two sub-steps: Step S310, drawing a two-dimensional menu in the three-dimensional space directly in front of the first area and projecting the two-dimensional menu perspectively into the first area; in this embodiment, According to the relevant information of the two-dimensional menu stored in the system storage area, such as position information, graphic information and color information, etc., the two-dimensional menu can be drawn in the relevant position directly in front of the first area, and the two-dimensional menu is located in the perspective projection within the area; step S320, translating the two-dimensional menu in the three-dimensional space directly in front of the first area along a preset direction to the two-dimensional three-dimensional space directly in front of the second area, and perspective-projecting the translated two-dimensional menu onto the second area In the second area, the distance between the perspective projected 2D menu in the first area and the same side of the first area is not equal to the distance between the perspective projected 2D menu in the second area and the same side of the second area .

In this embodiment, the translation direction of the two-dimensional menu in the three-dimensional space corresponds to the three-dimensional coordinate system and the plane where the window is located to construct the three-dimensional space. Taking the three-dimensional coordinate system shown in FIG. 2 as an example, the window W is located at the X axis and On the plane formed by the Y-axis direction and the first area W1 and the second area W2 are arranged side by side along the X-axis direction, at this time, the two-dimensional menu in the three-dimensional space directly in front of the first area W1 can be translated along the X-axis direction to two The three-dimensional menu is located in the three-dimensional space directly in front of the second area W2, and there is a certain relationship between the translation distance and the three-dimensional display effect of the finally formed three-dimensional menu. Specifically, assuming that the coordinates of a point on the two-dimensional menu in the three-dimensional space corresponding to the first area are a1 (a1_x, a1_y, a1_z), the coordinates of this point after translation are: a2 (a1_x', a1_y, a1_z ), then the relationship between a1_x and a1_x' satisfies the following expression: a1_x'=a1_x + (a1_z – z_ot )*coefficient, that is, the translation distance of the two-dimensional menu in the three-dimensional space satisfies the following relationship: L=(a_z – z_ot )*coefficient, where Coefficient is an adjustment coefficient that can be adjusted according to the actual needs of the system, and z_ot is the Z-axis coordinate value of the concave-convex balance point, where the concave-convex balance point reflects the concave-convex effect of the 3D image, and its value can be adjusted Set according to the desired 3D display effect.

After perspective projection, the distance between the perspective projected 2D menu in the first area and the same side of the first area is not equal to the distance between the perspective projected 2D menu in the second area and the same side of the second area . Referring to Fig. 3, the two-dimensional menus M1, M2 and M3 are formed after projecting the two-dimensional menus in the three-dimensional space directly in front of the first area W1 to the first area W1, and then translated to the two-dimensional menus in the three-dimensional space directly in front of the second area W2. Two-dimensional menus M1', M2', and M3' are formed after the two-dimensional menu is projected to the second area W2 as an example. The menus M1, M2, and M3 are separated from the left border L1 of the first area W1 by a distance. ', M3' has a distance from the left frame L2 of the second area W2, and the distance between each menu in the second area W2 and the left frame L2 is not equal to the distance between the corresponding menu in the first area W1 and the left frame L1 . Take the distance between menu M1 and left frame L1 as S1, the distance between menu M2 and left frame L1 as S2, the distance between menu M3 and left frame L1 as S3, and the distance between menu M1' and left frame L2 as S1 ', the distance between the menu M2' and the left frame L2 is S2', and the distance between the menu M3' and the left frame L1 is S3'. There is a visual difference between the first area and the second area.

It should be noted that, in these embodiments, the copied stereoscopic image of the menu is still within the scope of perspective projection after transformation of three-dimensional space coordinates.

In step S400, perform 3D image processing on the 2D menus in the first area and the second area and output the 3D menus. In this embodiment, step S400 includes: step S410, performing 3D image processing on the two-dimensional menus formed in the first area and the second area; step S420, alternately outputting the two-dimensional menus after 3D image processing to form 3D menu. Specifically, in this embodiment, graphics processing technologies such as OpenGL and DirectX can be used to process these two-dimensional images to form menu coordinate information in the screen coordinate system, and the generated menu coordinate information is alternately output to form a 3D image. menu. The alternating time interval is based on the length of the interval between the two images having a depth of field that the brain cannot recognize after receiving two images with parallax continuously, resulting in an illusion. In this way, the user can recognize the menu interface with three-dimensional features at the corresponding position of the display unit through a receiving device such as shutter type 3D glasses.

The method for three-dimensional display of the menu provided by the present invention draws the two-dimensional menu in the three-dimensional space, projects the two-dimensional menu perspectively into the first area, and translates the two-dimensional menu in the three-dimensional space so that the two-dimensional menu can be perspectively projected into the second area, and the distance between the 2D menu projected perspectively into the first area and the same side of the first area and the distance between the 2D menu projected perspectively into the second area and the same side of the second area Not equal, so, for the user, there is a parallax between the menu in the first area and the menu in the second area, and the user receives a picture with parallax and sees a three-dimensional menu, which improves the user's ability to operate the 3D display device. The degree of experience in the process of watching 3D video.

The present invention further provides a device capable of realizing three-dimensional display of menus. Please refer to FIG. 4 , which is a block diagram of a display device 10 for realizing stereoscopic menu display in an embodiment of the present invention. In this embodiment, the display device 10 can be applied to electronic products with 3D display devices capable of playing 3D videos, such as music players, PADs, tablet computers or liquid crystal displays, etc., for users to watch 3D videos At the same time enjoy the 3D menu interface operation. The display device 10 includes an operation module 100 , a processing module 200 and a display module 300 .

The operation module 100 is used for setting a perspective projection and setting a window in the perspective projection. As shown in FIG. 5 , in some embodiments, the operation module 100 includes a perspective projection setting unit 110 and a window setting unit 120 . The perspective projection setting unit 110 is used to set a three-dimensional space coordinate system, and set perspective projection in the three-dimensional space coordinate system. The window setting unit 120 is connected to the storage module, and is used for setting a window in the perspective projection, and making the size of the window equal to the size of the display area of the display device. In this embodiment, the setting of the window in the perspective projection means that the viewpoint of the perspective projection is set on the central axis of the window. By moving the viewpoint on the central axis of the window, the perspective projection just covers the window when projected onto the window.

As shown in FIG. 6 , the processing module 200 is configured to form a first area and a second area of equal size in the window, form a two-dimensional menu in a three-dimensional space corresponding to the first area and the second area, and combine the two A dimension menu is projected perspectively in the first area and the second area. In this embodiment, the processing module 200 includes a window processing unit 210 , a first processing unit 220 and a second processing unit 240 . The window processing unit 210 is configured to form a first area and a second area of equal size in the window. In this embodiment, the areas of the first area and the second area are respectively half of the area of the window, and the first area and the second area can be arranged side by side along the horizontal or vertical direction of the window. The first processing unit 220 is configured to draw a two-dimensional menu in the three-dimensional space directly in front of the first area and perspective-project the two-dimensional menu into the first area. In this embodiment, the first processing unit 220 can draw the two-dimensional menu directly in front of the corresponding first area according to the relevant information of the two-dimensional menu stored in the system storage area, such as position information, graphic information and color information, etc. in the three-dimensional space. The second processing unit 240 is configured to translate the two-dimensional menu in the three-dimensional space right in front of the first area along a preset direction to the three-dimensional space where the two-dimensional menu is located right in front of the second area, and perspective-project the translated two-dimensional menu into the second area, let the distance between the 2D menu projected perspectively into the first area and the same side of the first area be the distance between the 2D menu projected perspectively into the second area and the same side of the second area not equal.

In this embodiment, the translation direction of the two-dimensional menu in the three-dimensional space corresponds to the three-dimensional coordinate system and the plane where the window is located to construct the three-dimensional space. Taking the three-dimensional coordinate system shown in Figure 2 as an example, the window is located on the X axis and the Y axis. On the plane formed by the axis direction and the first area and the second area are arranged side by side along the X-axis direction, at this time, the two-dimensional menu in the three-dimensional space directly in front of the first area can be translated along the X-axis direction to the two-dimensional menu located at the first In the three-dimensional space directly in front of the second area, there is a certain relationship between the translation distance and the three-dimensional display effect of the finally formed three-dimensional menu. Specifically, assuming that the coordinates of a point on the two-dimensional menu in the three-dimensional space corresponding to the first area are a1 (a1_x, a1_y, a1_z), the coordinates of the point after translation are: a2 (a1_x', a1_y, a1_z ), then the relationship between a1_x and a1_x' satisfies the following expression: a1_x'= a1_x + (a1_z – z_ot )*coefficient, that is, the translation distance of the two-dimensional menu in the three-dimensional space satisfies the following relationship: L=(a_z – z_ot )*coefficient, where Coefficient is an adjustment coefficient that can be adjusted according to the actual needs of the system, and z_ot is the Z-axis coordinate value of the concave-convex balance point, where the concave-convex balance point reflects the concave-convex effect of the 3D image, its value It can be set according to the required 3D display effect.

After perspective projection, the distance between the perspective projected 2D menu in the first area and the same side of the first area is not equal to the distance between the perspective projected 2D menu in the second area and the same side of the second area . Combined with Figure 3, the two-dimensional menus located in the three-dimensional space directly in front of the first area are projected to the first area to form two-dimensional menus M1, M2 and M3, and translated to the projection of the two-dimensional menus in the three-dimensional space directly in front of the second area After entering the second area, two-dimensional menus M1', M2', and M3' are formed as an example for illustration. The distances between menus M1, M2, and M3 and the left border L1 of the first area are respectively S1, S2, and S3. Menu M1 The distance between 'and the left frame L2 is S1', the distance between the menu M2' and the left frame L2 is S2', the distances between the menus M1', M2' and M3' and the left frame L2 of the second area W2 are respectively S1' , S2', S3', then S1≠S1', S2≠S2' S3≠S3', the menu has a visual difference between the first area and the second area.

The display module 300 is configured to perform 3D image processing on the two-dimensional menus in the first area and the second area and output the 3D menus. In this embodiment, the display module 300 performs 3D image processing on the 2D menus formed in the first area and the second area, and alternately outputs the 3D image processed 2D menus to form a 3D menu. The alternating time interval is based on the length of the interval between the two images having a depth of field that the brain cannot recognize after receiving two images with parallax continuously, resulting in an illusion. In this way, the user can recognize the menu interface with three-dimensional features at the corresponding position of the display unit through a receiving device such as shutter type 3D glasses.

The display device 10 provided by the present invention draws the two-dimensional menu in the three-dimensional space, projects the two-dimensional menu perspectively into the first area, and translates the two-dimensional menu in the three-dimensional space so that the two-dimensional menu can be perspectively projected to the first area. In the second area, the distance between the perspective projected 2D menu in the first area and the same side of the first area is not equal to the distance between the perspective projected 2D menu in the second area and the same side of the second area , so, for the user, there is parallax between the menu in the first area and the menu in the second area, and the user receives a picture with parallax and sees a three-dimensional menu, which improves the user's ability to watch 3D when operating a 3D display device. The degree of experience in the process of video.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are equally included in the scope of patent protection of the present invention.

Claims (10)

1. a display packing that realizes menu stereo display is characterized in that, may further comprise the steps:

Perspective projection is set, in described perspective projection, window is set;

In described window, form equal-sized first area and second area;

To should the first area and the three dimensions of this second area in form two-dimensional menu, and with this two-dimensional menu perspective projection in this first area and this second area;

Two-dimensional menu in this first area and this second area is carried out 3D rendering process and export the 3D menu.

2. display packing as claimed in claim 1 is characterized in that, described perspective projection is set, and the step that window is set in described perspective projection comprises:

Three-dimensional coordinate system is set, in described three-dimensional coordinate system, perspective projection is set;

In described perspective projection, window is set, so that the viewing area equal and opposite in direction of the size of described window and display device.

3. display packing as claimed in claim 1, it is characterized in that, the area of described first area and described second area is respectively half of described window area, and this first area and this second area are arranged side by side along horizontal direction or the vertical direction of described window.

4. display packing as claimed in claim 1 is characterized in that, described to should the first area and the three dimensions of this second area in form two-dimensional menu, and the step of this two-dimensional menu perspective projection in this first area and this second area comprised:

In the three dimensions of the dead ahead of this first area, draw two-dimensional menu and with this two-dimensional menu perspective projection in the first area;

Be arranged in the three dimensions in second area dead ahead along two-dimensional menu to the two-dimensional menu in the dead ahead three dimensions of this first area of preset direction translation, in second area, make two-dimensional menu and distance first area the same side between and the perspective projection of perspective projection in the first area unequal to two-dimensional menu and the distance between second area the same side in the second area two-dimensional menu perspective projection of this translation.

5. display packing as claimed in claim 4 is characterized in that, relation below the translation distance L of described two-dimensional menu in three dimensions satisfies: L=(a_z – z_ot) * coefficient;

Wherein, a_z is certain any Z axis coordinate figure on the two-dimensional menu, the adjustment coefficient of Coefficient for adjusting according to system's actual needs, and z_ot is the Z axis coordinate figure of the concavo-convex balance point that embodies the 3D rendering concave-convex effect, wherein, Z axis is the reference axis on plane, vertical described window place.

6. display packing as claimed in claim 1 is characterized in that, describedly two-dimensional menu in this first area and this second area is carried out 3D rendering is processed and the step of output 3D menu comprises:

The two-dimensional menu that is formed in this first area and this second area is carried out the 3D rendering processing;

Two-dimensional menu after alternately exporting 3D rendering and processing is to form the 3D menu.

7. a display unit that realizes menu stereo display is characterized in that, comprising:

Operational module is used for perspective projection being set and in described perspective projection window being set;

Processing module, be used for forming equal-sized first area and second area at described window, to should the first area and the three dimensions of this second area in form two-dimensional menu, and with this two-dimensional menu perspective projection in this first area and this second area;

Display module is used for the two-dimensional menu of this first area and this second area is carried out 3D rendering processing and output 3D menu.

8. display unit as claimed in claim 7, it is characterized in that, described operational module comprises perspective projection setting unit and window setting unit, the perspective projection setting unit is used for arranging a three-dimensional coordinate system, in described three-dimensional coordinate system, perspective projection is set, described window setting unit is used for a window is set in described perspective projection, so that the viewing area equal and opposite in direction of the size of described window and display unit.

9. display unit as claimed in claim 7 is characterized in that, described processing module comprises window treatments unit, the first processing unit and the second processing unit; This window treatments unit is used for forming equal-sized first area and second area at described window; The first processing unit be used for the dead ahead of this first area three dimensions draw two-dimensional menu and with this two-dimensional menu perspective projection in the first area; This second processing unit is used for being arranged in along two-dimensional menu to the two-dimensional menu of the dead ahead three dimensions of this first area of preset direction translation the three dimensions in second area dead ahead, in second area, make two-dimensional menu and distance first area the same side between and the perspective projection of perspective projection in the first area unequal to two-dimensional menu and the distance between second area the same side in the second area two-dimensional menu perspective projection of this translation.

10. display unit as claimed in claim 7, it is characterized in that, the area of described first area and described second area is respectively half of described window area, and this first area and this second area are arranged side by side along horizontal direction or the vertical direction of described window.

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