KR20180046567A - Apparatus and method for controlling head up display (hud) device in vehicle - Google Patents

Abstract

The present invention provides a device for controlling a head up display (HUD) for a vehicle and a method thereof, which prevent a driver or a user of a vehicle from seeing an image including undesired information in case of outside of a predetermined view window. The method for controlling an HUD for a vehicle comprises the following steps of: providing the three-dimensional image through the HUD; tracking an eyeball position of the driver or the user; determining whether the eyeball position is located inside the predetermined view window; and controlling the HUD in correspondence with the eyeball position based on the view window.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a head-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus and a method for controlling a head-up display (HUD) for a vehicle, and more particularly, Head-up display (HUD) control apparatus and method.

There is a growing demand for vehicle display integration worldwide and driving safety systems for automobiles are becoming more and more new technologies for the road conditions of the vehicles and the drivers of safe cars. Especially, the head-up display, HUD) system reduces the fatigue of eyes by reducing the risk of accidental movements by moving the eyes by making it possible to see the current state of driving without changing the convergence distance of the focus of the driver or the pilot and the focus of the eye. to be.

For example, navigation using a head-up display (HUD), which is capable of directing information to the front sight of a vehicle, is more secure because it can be seen without disturbance because the navigation is ahead of the normal navigation. The head-up display (HUD) is mainly used for fighters and aircraft, and is able to see information reflected on the windshield. It is also characterized by the fact that it can react quickly because it can read the instrument without interrupting the driver's front line of sight. This feature has the advantage that the driver can reduce the inconvenience of moving the center of sight to see the instrument panel or the like at the bottom of the visual field while driving, and reduce the risk of accident due to the movement of the visual field center. This has led to increased interest in vehicle mounting of head-up displays (HUDs).

On the other hand, if a three-dimensional (3D) image can be displayed on the head-up display (HUD), the safety of the driver or the user can be enhanced. However, if a driver or a user needs to wear a separate means (e.g., three-dimensional glasses, etc.) when displaying a three-dimensional (3D) image on a vehicle, The driving safety and convenience of the vehicle may not be enhanced. Therefore, a Glass-Free Multiview Autostereoscopic Display can be applied to a head-up display for a vehicle

KR 10-2014-0137857 A

The present invention relates to a vehicular head-up display (HUD) for preventing a driver or a user of a vehicle equipped with a head-up display (HUD) providing a three-dimensional image from viewing an image containing undesirable information when a user leaves a predetermined viewing window ) Can be provided.

In addition, the present invention can provide a display device and a method for providing a three-dimensional image that can set or control a video signal output from a head-up display (HUD) employing an integrated video system differently according to a user's position .

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

A method of controlling a head-up display for a vehicle according to an embodiment of the present invention includes: tracking an eye position of a driver or a user; determining a positional relationship between the eye position and a predetermined view window; And controlling a head-up display corresponding to the eye position based on the view window.

In addition, the method of controlling a head-up display for a vehicle may further include providing a three-dimensional image through the head-up display.

The providing of the three-dimensional image may include: outputting a base image on which the reference image and the sub-image are integrated; Passing the base image through a lens array; And reflecting the image passed through the lens array to a windshield.

Also, the step of controlling the head-up display may include turning on all the pixels or pixels in the base image of the head-up display when both the eye positions of the driver or the user are within the view window. Turning off both the pixel or the pixel in the base image of the head-up display when both of the two eye positions are out of the view window; And turning off at least one of the subpixels contained in each of the pixels or the pixels in the base image of the head-up display when some of the two eye positions are out of the viewing window.

The step of determining the positional relationship may include determining a position ratio by comparing positions of the two eye positions of the driver or the user with the position of the visual field, and the step of controlling the head-up display may correspond to the ratio And determining to activate among the plurality of pixels constituting the basic image or the subpixels included in each of the pixels.

In addition, when the subpixel is turned off, at least one auxiliary image that is visible at a position outside the viewing window may be deleted.

In addition, the viewing window is a first image area passing through a principal ray output from a pixel or a pixel constituting a base image of the head-up display, and may be determined in proportion to the size of the base image.

In addition, the pixel or the pixel may include a plurality of subpixels, and the plurality of subpixels may output a plurality of auxiliary images corresponding to the basic image.

In addition, controlling the head-up display may include selectively inactivating at least one of the second image regions displayed outside the first image region corresponding to the eye position.

Also, the second image area may be formed by the light rays other than the principal ray output from the plurality of sub pixels.

A computer-readable recording medium according to another embodiment of the present invention may include an application program that realizes the above-mentioned control method of the head-up display for a vehicle through being executed by a processor.

According to another aspect of the present invention, there is provided an apparatus for controlling a head-up display for a vehicle, comprising: an eyeball tracking unit for tracking an eyeball position of a driver or a user; A determining unit for determining a positional relationship between the eyeball position and a predetermined view window; And a control unit for controlling the head-up display corresponding to the eye position based on the view window.

In addition, the controller of the head-up display for a vehicle may further include a three-dimensional image supply unit for providing a three-dimensional image through the head-up display.

The three-dimensional image supply unit may include an image output unit for outputting a basic image on which the reference image and the sub image are integrated; A lens array for passing the basic image; And a reflector that reflects an image passed through the lens array and reflects the image on a windshield.

In addition, the reflector may include at least one reflector or mirror, and the reflector or mirror may have a concave surface corresponding to the curved surface of the windshield.

In addition, the controller may turn on all the pixels or pixels in the basic image of the head-up display when both the eyes of the driver or the user are inside the viewing window, and when both eyes are out of the viewing window Off of the pixel or all of the pixels in the base image of the head-up display, and when some of the two eye positions are out of the viewing window, And at least one of the subpixels contained therein may be turned off.

Also, the determination unit determines a position ratio by comparing the two eye positions of the driver or the user with the position of the view window, and the control unit may include a plurality of pixels or pixels corresponding to the position ratio, It is possible to decide to activate one of the sub-pixels.

In addition, when the subpixel is turned off, at least one auxiliary image that is visible at a position outside the viewing window may be deleted.

In addition, the viewing window is a first image area passing through a principal ray output from a pixel or a pixel constituting a base image of the head-up display, and may be determined in proportion to the size of the base image.

In addition, the pixel or the pixel may include a plurality of subpixels, and the plurality of subpixels may output a plurality of auxiliary images corresponding to the basic image.

In addition, the controller may selectively disable at least one of the second image areas displayed outside the first image area corresponding to the eye position.

Also, the second image area may be formed by the light rays other than the principal ray output from the plurality of sub pixels.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And can be understood and understood.

The effect of the device according to the present invention will be described as follows.

The present invention relates to a vehicular head-up display (HUD), which can prevent a driver or a user from providing information that may cause misunderstandings or misunderstandings when a driver or a user who is driving the vehicle looks at the windshield at a normal position, .

In addition, the present invention can selectively control sub-pixels to control sub-image reproduction, thereby solving problems such as power consumption and heat generation that may occur in an environment requiring super-high-brightness image reproduction, The possibility of damaging the display device or the optical component can be reduced.

In addition, since the method of the present invention uses a simple algorithm, fast calculation processing can be expected in accordance with a reduction in calculation load, and it is possible to provide a quick image for various situations that occur suddenly while driving, thereby improving driving stability.

Further, the present invention can control the head-up display (HUD) for a vehicle through a simple calculation, thereby reducing power consumption and heat generation of the computing device.

In addition, due to the high efficiency of the computing device, the present invention enables the integration of electronic control components other than the optical structural part of the head-up display (HUD) of the vehicle, so that the space efficiency inside the vehicle can be enhanced.

The effects obtainable by the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. It is to be understood, however, that the technical features of the present invention are not limited to the specific drawings, and the features disclosed in the drawings may be combined with each other to constitute a new embodiment.
Fig. 1 illustrates a control method of a head-up display for a vehicle.
Fig. 2 illustrates the operation of a head-up display for a vehicle.
3 illustrates a method of providing a three-dimensional image to a head-up display for a vehicle.
4 illustrates a view window of a direct imaging system.
5 illustrates a duplicated image generated in the direct imaging system.
Figure 6 illustrates the operation of a head-up display for a vehicle using eye tracking results.
Figure 7 illustrates the relationship between the eye position and the viewing window.
Figure 8 illustrates an example of a method for controlling a head-up display for a vehicle.
Fig. 9 illustrates a first example according to the control result of the head-up display for the vehicle.
Fig. 10 illustrates a second example according to the control result of the head-up display for the vehicle.
11 illustrates a control apparatus of a head-up display for a vehicle.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and various methods to which embodiments of the present invention are applied will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

In the description of the embodiments, when it is described as being formed on the "upper" or "lower" of each element, the upper or lower (lower) And that at least one further component is formed and arranged between the two components. Also, the expression "upward" or "downward" may include not only an upward direction but also a downward direction with respect to one component.

Fig. 1 illustrates a control method of a head-up display for a vehicle.

As shown, the method of controlling a head-up display for a vehicle comprises the steps of: tracking an eye position of a driver or a user; determining whether an eye position is within a predetermined viewing window; And controlling (16) the head-up display (HUD) in response to an eye position of the head-up display (HUD).

Specifically, the step 16 of controlling the pixels of the head-up display comprises the steps of turning on all of the pixels or pixels in the base image of the head-up display if both eyes of the driver or user are in the view window, Turning off all of the pixels or pixels in the base image of the head-up display when both of the two eye positions are out of the viewing window, and, if some of the two eye positions are out of the viewing window, And turning off the sub-pixels of the sub-pixel. At this time, when the sub-pixels in the basic image are turned off, at least one sub-image displayed at a position outside the view window may be deleted.

A head-up display (HUD) mounted on a vehicle can use a See-Through information providing method. Here, the See-Through information providing method is a method of representing the real world and the virtual world in a superimposed manner, including an optical see-through method and a video see-through method. The optical see-through method is a method in which a user views a virtual object displayed on a transparent display while viewing the outside world with a naked eye through a transparent display. On the other hand, a video see-through method is a method in which a virtual world generated by a real-world image captured by a camera and a virtual object generated by the camera are overlapped and then provided to a user through a monitor. Therefore, an optical see-through system may be more suitable as a head-up display (HUD) mounted on a vehicle that can be operated by a driver or a user. The optical see-through method applicable to automobiles can be divided into display panel method, laser method, and projection method depending on the implementation method.

In the display panel method, a transparent display such as an LCD (Liquid Crystal Display) or an OLED (Organic Light-Emitting Diode) is installed between the front window of the vehicle or between the driver and the front window of the vehicle, It overlaps with the real world you see through the display. The laser method is a method of applying light emitting material to the front windshield of automobile and then emitting laser beam to express information. The projection method is a method in which an image is projected upward toward a windshield (i.e., windshield) on the front surface of a vehicle after embedding a projection optical device in a vehicle dashboard, and a part of the projected image is reflected on a windshield and is displayed to a user. While the display panel method or the laser method displays images on the transparent display or the front windshield surface of the vehicle, the projection method differs in that a virtual image is formed a few meters ahead of the driver.

On the other hand, a three-dimensional (3D) image can be provided through a head-up display for a vehicle. The three-dimensional image can be classified into a spectacles system for displaying on a two-dimensional plane, a full-three-dimensional system for displaying on a three-dimensional space, and the like. Providing a two-glasses 3D image may not be suitable for a vehicle display which must ensure safety of driving. In the non-eyeglass system, a parallax doubler system, a lenticular system, or the like can be applied. On the other hand, in the case of a head-up display for a vehicle using a windshield for securing a driver's view, an integrated image system, a volumetric system, and a holographic system, which are classified into a full three-dimensional system, can be used.

Here, the integrated image method is a method of forming a light field by integrating points in a space through a lens array and a basic image. For example, the process of providing a three-dimensional image may include outputting a basic image integrated with a reference image and a sub-image, passing the basic image through a lens array, and reflecting the image through the lens array to form a windshield windshield).

The method of providing a three-dimensional image using a lens array has a limited viewing angle for observing a correct three-dimensional image, and the representation of depth in the image may be limited. The reason that the viewing angle is limited is due to the limitation of the area of the basic image reproduced through each lens of the lens array. A method of widening the area of the basic image to widen the viewing angle, a lens switching technique of blocking the effect of the peripheral lens by using a mask, a method of using a curved lens array, and the like can be applied. There is an area where the driver or the user can observe the correct or appropriate three-dimensional image due to the limitation of the viewing angle, which is called a viewing window here. The view window can be regarded as a first image area through which the principal ray output from the pixels or pixels constituting the base image of the head-up display passes, and can be determined in proportion to the size of the base image.

A playback apparatus included in a head-up display for a vehicle includes a plurality of pixels or pixels. Further, each pixel or pixel includes a plurality of subpixels, and the plurality of subpixels can output light beams corresponding to the base image.

Referring to FIG. 1, step 16 of controlling a head-up display includes selectively deactivating at least one of a second image area displayed outside of a first image area corresponding to a user or an operator's eye position can do. Since a lens array is used in the process of providing a three-dimensional image, it is possible to provide a three-dimensional image having a continuous parallax to a user or a driver. This can provide an image including past information in an area outside the view window The transmitted information redundant image) can be displayed. If the user leaves the viewing window, the driver or user may see an undesirable image that is delivered late, which may compromise driving safety. Accordingly, after tracking the eye position of the driver or the user, it is possible to remove a redundant image that the driver or the user can touch in correspondence to the eye position. Here, the second image area may be formed by the out-of-principal-light rays output from the plurality of sub-pixels.

Fig. 2 illustrates the operation of a head-up display for a vehicle.

As shown, a three-dimensional integrated lifting head-up display (HUD) system uses a head-up display device 6 for a vehicle to project a three-dimensional image 8B ). ≪ / RTI >

Although not shown, the head-up display device 6 for a vehicle is provided with a playback device for playing back a basic image for providing a three-dimensional image 8B, and a display device for maximizing the distance feeling of a video by floating the video signal output from the playback device And the like. The windshield 4 of the vehicle can form a virtual image such that a three-dimensional image floated by the float lens is reproduced outside the vehicle.

3 illustrates a method of providing a three-dimensional image to a head-up display for a vehicle. Specifically, (a) illustrates a process of acquiring image information about an object 22A in space (i.e., a shooting process), (b) The process of displaying the 2D image 22B (i.e., the reproduction process) will be described.

As shown in the figure, the integrated imaging system captures images of the image for each lens through a lens array 24 consisting of a small array of lenses during an imaging process and a reproducing process. The image thus photographed is referred to as a base image 26. [ If the basic image 26 is reproduced through the display device and the lens array 28 is disposed on the front side, the captured three-dimensional image 22B can be reproduced as it is.

Such an integrated imaging system not only provides advantages of no eye clearance but also provides continuous parallax so that the reproduction of a three-dimensional image is natural and provides a parallax in both horizontal and vertical directions. It is also possible to implement all the colors that the display reproducing the basic image can reproduce. Also, the data requirement is less than holography, which is another method for providing three-dimensional images. In addition, if the integrated imaging method is used, the focus-convergence distance can be matched, which is advantageous in terms of cognitive elements.

On the other hand, in the case of the integrated imaging method, there is a limitation on the depth representation, which is caused by the focal length of the lens array 28. The position where the basic image is formed is determined by the focal distance of each basic lens of the lens array 28. The optimum range of depth for generating the resulting light field is limited around the grain point. In order to improve the limitation of depth representation, the depth representation can be improved by using a polarization beam splitter or the like to make various optical paths.

4 illustrates a view window of a direct imaging system. Specifically, (a) shows a concept that the actual image 8A is transformed into a three-dimensional image 8B, (b) shows a view window 30A of the integrated image obtained from the actual image 8A, A view window 30B in which a driver can obtain accurate information will be described.

As shown in the figure, the actual image 8A can be collected as an integrated image through the process described with reference to FIG. At this time, the playback device 26 outputs the basic video based on the view window of the integrated video (i.e., the main display area 30A of the video). The basic image can be sensed by the user's eyes through the lens array 28 and the float lens 34. [ That is, each sub image of the basic image is displayed in a virtual image area by the basic lenses of the pair of lens arrays, and this can be displayed in the view window 30B where the user or the driver can obtain accurate information. At this time, due to the limitation of the viewing angle of the lens array 28, the repeated images are displayed due to the action of the sub-image that does not form a pair and the basic lens, and the viewing areas 32A and 32B And is formed around the viewing window 30B.

The field of view 30B of the integrated image and the field of view 32A and 32B of the repeated image are adjacent to the vicinity of the driver's eye by the float lens 34. Such field of view areas 32A and 32B are used for the head- Which can lead to quality deterioration.

5 illustrates a duplicated image generated in the direct imaging system.

As shown in the figure, the optical signal output from the reproducing apparatus 26 can be recognized by the user or the driver via the lens array 28 and the float lens 34. (Indicated by a straight line) of the optical signals contained in the base image 26 can be moved and transmitted according to the intention of designing the vehicle head-up display (HUD), and these optical signals can be transmitted through the viewing window 30B to the user Can be delivered to the driver. However, not all optical signals contained in the base image 26 are moved by the intended optical path alone. There is a light signal (indicated by a dashed line) traveling on a path farther than the intended path even though the lens array 28 and the float lens 34 pass through and this optical signal is transmitted through the field of view 32B (I.e., the information that has already been transmitted in the view window 30B arrives late) may occur.

In a head-up display (HUD) system for an integrated car, the image area (e.g., the view window 30B, the view area 32B) that the user or the driver can observe according to the position of the eye can be different from each other. (HUD) system, which is a vehicle head-up display (HUD) system, operates to a sub-image which is not an object to be observed, thereby reducing the efficiency of the entire operation. 32B), the user will see an erroneous image (i.e., a repeated image).

If the head-up display (HUD) system for an integrated lifting vehicle does not recognize the position of the driver or user, position selective sub-image playback is not possible. Also, as a high-resolution high-brightness display is applied to a head-up display (HUD) system for an integrated car, it may have unnecessary power consumption and heat generation problems, and it is impossible to remove repeated / redundant images that can be encountered by a driver or a user.

Figure 6 illustrates the operation of a head-up display for a vehicle using eye tracking results.

As shown, the vehicle head-up display (HUD) system may include an eye tracking unit 42 that can sense the position of the user's eye 1A or 1B of the driver 2. The vehicle head-up display (HUD) system selectively reproduces the three-dimensional image 8B to the windshield 4 corresponding to the position of the user or the driver 2 obtained from the eye tracking technique through the eye- Method.

Only the sub-images around the eyes of the user or the driver 2 corresponding to the recognized eye positions 1A and 1B of the user or the driver 2 are detected Selectively reproduced to improve the efficiency of the display and remove the repeated image. Specifically, the vehicle head-up display (HUD) system can determine whether the driver's or user's eyes 1A, 1B are inside or outside the viewing window 30B.

Figure 7 illustrates the relationship between the eye position and the viewing window.

As shown in the figure, the sensed eye positions 1A and 1B can be divided into three types. First, (a) explains a case where two eyes 1A and 1B of the user or the driver are inside the viewing window 30B. (b) shows a case in which a part of the eyeball 1A or 1B of the user or the driver is outside the view window 30B, (c) shows the case where the entire two eyes 1A and 1B of the user or the driver are in the view window 30B ) Is shown on the outside.

Figure 8 illustrates an example of a method for controlling a head-up display for a vehicle.

As shown, in order to control the head-up display for the vehicle, the eye position of the user or the driver can be tracked (62). Once the eye position of the user or the driver is recognized, it can be determined whether the driver's binocular is inside the viewing window (64). If both the user's or the driver's binocular are in the viewing window (68A), the 3D image can be reproduced (70) using the entire pixels of the playback device.

If neither the user nor the driver's bin is in the field of view, then one can determine whether the user or the driver's eye is inside the field of view (66). If one of the binaurals of the user or the driver is in the viewing window, some pixels of the playback apparatus may be used and some pixels may be turned off (68B) to reproduce the three-dimensional image (70).

If both the user or the driver are out of the viewing window, the entire pixel of the playback device may be turned off (68C). In this case, it may not be necessary to drive the head-up display for the vehicle because it is not judged that the user or the driver is in a position to obtain appropriate information.

Fig. 9 illustrates a first example according to the control result of the head-up display for the vehicle. (a) and (b) are both located in the viewing window 30B of both the user's or the driver's eyes 1A and 1B. When both the user's or driver's eyes 1A and 1B are positioned in the viewing window 30B, all the pixels constituting the base image may be activated. However, according to the embodiment, even if both the user's or the driver's eyes 1A and 1B are located in the viewing window 30B, the basic image can be controlled more precisely.

Referring to FIG. 3A, both eyes 1A and 1B of the user or the driver are located in the viewing window 30B. However, both the user or the driver's eyes 1A and 1B are positioned on the left side of the viewing window 30B. In this case, the subpixels located at the center and the right side of the pixels of the basic image 26 may be turned on and the subpixels located at the left side of the center may not be turned on.

The user's or the driver's eyes 1A and 1B are located in the viewing window 30B but both the user or the driver's eyes 1A and 1B are positioned on the right side of the viewing window 30B . In this case, the sub pixels located at the center and the left of the pixels of the basic image 26 may be turned ON and the sub pixels located at the right side of the center may not be turned ON.

The positions of the plurality of subpixels included in each pixel of the basic image 26 can be matched with the image area (e.g., the view window 30B) that the user or the driver can touch. Although the example in which the left and right are changed is described here, it can be applied to the upper and lower positions. On the other hand, the corresponding relationship may vary depending on the number of reflectors or lenses in the path from the playback device 26 to the windshield.

The view window 30B is an area through which the principal ray of each pixel of each sub image of the basic image passes. The area of the view window 30B corresponds equally as a ratio with the area of the sub image. That is, as shown in the figure, areas of a sub-image necessary for a user or a driver located in a specific area inside the viewing window to view a virtual image provided by the vehicle head-up display system are similar to each other. When the eyeball is recognized, a relative position ratio to the view window is calculated, and position selective image reproduction can be performed if only the pixels of the sub image region matching the position ratio value are operated in the basic image 26. [

Fig. 10 illustrates a second example according to the control result of the head-up display for the vehicle.

As shown in the figure, in order to remove the repeated image when the position of at least one of the eyes 1A, 1B of the user or the driver is out of the viewing window 30B, the corresponding window corresponding to the eye outside the viewing window 30B The pixel region of the image can be turned off. That is, the subpixels corresponding to the subimage area corresponding to the eyeball 1B of the user or the driver located inside the viewing window 30B can be turned ON and all the other subpixels can be deactivated (OFF).

11 illustrates a control apparatus of a head-up display for a vehicle.

As shown in the figure, the control device of the head-up display for the vehicle includes an eye tracking unit 42 for tracking the eyeball position of the driver or the user, a determination unit 44 for determining the positional relationship between the eyeball position and the predetermined viewing window, And a control unit 46 for controlling the head-up display displayed on the windshield 4 corresponding to the eye position based on the position of the eye. In addition, the control apparatus of the head-up display for a vehicle may further include a three-dimensional image supply unit 50 for providing a three-dimensional image through a head-up display.

Specifically, the three-dimensional image supply unit 50 includes an image output unit 52 for outputting a basic image on which the reference image and the sub image are integrated, a lens array 54 for passing the basic image, And a reflecting portion 56 reflecting the light onto the windshield 4. Here, the reflecting portion 56 may include at least one reflecting mirror or a mirror. In addition, the reflector or mirror may have a concave surface corresponding to the curved surface of the windshield 4.

According to the embodiment, the control unit 46, which receives the determination of the determination unit 44, can turn on all of the pixels or pixels in the basic image of the head-up display when both the eyeball positions of the driver or the user are inside the viewing window have. In addition, when both the driver's or user's two eye positions are out of the viewing window, both pixels or pixels in the base image of the head-up display can be turned off. In addition, when some of the two eye positions of the driver or the user are out of the viewing window, it is possible to turn off at least one of the subpixels contained in each pixel or pixel in the basic image of the head-up display.

According to the embodiment, the determination unit 44 may determine the position ratio by comparing the two eye positions of the driver or the user with the position of the view window, and the control unit 46 may determine the position ratio by comparing the positions of the plurality of pixels Or one of the sub-pixels contained in each of the pixels.

When the sub-pixels in the basic image are turned off by the control unit 46, at least one auxiliary image that is visible at a position outside the viewing window may be deleted. Here, the view window is a first image area through which the principal ray output from the pixels or pixels constituting the base image of the head-up display passes, and can be determined in proportion to the size of the base image. At this time, the proportional multiple can be determined according to the magnification of the lens array 54 and the reflecting portion 56 in the path where the base image is transmitted to the windshield 4. On the other hand, the pixels or pixels in the basic image may include a plurality of subpixels, and the plurality of subpixels may form a plurality of auxiliary images corresponding to the basic image.

The control unit 46 may selectively inactivate at least one of the second image region displayed outside the first image region corresponding to the eye position of the user or the driver. At this time, the second image area may be formed by the light rays other than the principal ray output from the plurality of sub pixels.

As described above, according to the present invention, by using a characteristic capable of selectively reproducing a visual field, which is one of the features of the integrated floating three-dimensional display system, only the position range of the eye of the driver acquired by the eye position sensing technique The image can be reproduced in a limited manner and efficient display driving can be performed. In addition, when the eye position of the user or the driver is out of the observation range (eye box), it is possible to remove the repeated image without barrier by turning off the pixels corresponding to the eye position out of the observation range. On the other hand, it is possible to quickly implement an operation process from position recognition to pixel control by an efficient algorithm by directly matching the position range of the eyeball and each subimage of the display basic image.

The method according to the above-described embodiments may be implemented as a program to be executed by a computer and stored in a computer-readable recording medium. Examples of the computer-readable recording medium include a ROM, a RAM, a CD- , A floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet).

The computer readable recording medium may be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And, functional program, code, and code segments for implementing the above-described method can be easily inferred by programmers in the technical field to which the embodiment belongs.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

4: Windshield 6: HUD
42: eyeball tracking unit 44:
46: control unit 50:
52: video output unit 54: lens array
56: reflector 30B: viewing window

Claims (19)

Providing a three-dimensional image through a head-up display;
Tracking the eye position of the driver or user;
Determining a positional relationship between the eyeball position and a predetermined view window; And
Controlling the head-up display corresponding to the eye position based on the viewing window;
Up display of the vehicle. The method according to claim 1,
The step of providing the three-dimensional image
Outputting a basic image on which a reference image and a sub-image are integrated;
Passing the base image through a lens array; And
Reflecting the image passed through the lens array and illuminating the image on a windshield
Up display of the vehicle. The method according to claim 1,
The step of controlling the head-up display
Turning on all of the pixels or pixels in the base image of the head-up display if both the eye position of the driver or the user are within the viewing window;
Turning off both the pixel or the pixel in the base image of the head-up display when both of the two eye positions are out of the view window; And
Turning off at least one of the subpixels contained in each of the pixels or the pixels in the base image of the head-up display if some of the two eye positions are out of the viewing window
Up display of the vehicle. The method according to claim 1,
The step of determining the positional relationship
Comparing the two eye positions of the driver or the user with the position of the view window to determine a position ratio,
The step of controlling the head-up display
Determining whether to activate among the plurality of pixels constituting the base image or the subpixels included in each of the pixels corresponding to the ratio;
Up display of the vehicle. The method according to claim 3 or 4,
And wherein when the subpixel is turned off, at least one auxiliary image seen at a position outside the viewing window is deleted. The method according to claim 1,
Wherein the view window is a first image area passing through a principal ray output from a pixel or pixel constituting a base image of the head up display and is determined in proportion to a size of the base image. The method according to claim 6,
Wherein the pixel or the pixel includes a plurality of subpixels and the plurality of subpixels are capable of outputting a plurality of subimages corresponding to the basic image. 8. The method of claim 7,
The step of controlling the head-up display
Selectively deactivating at least one of a second image area displayed outside the first image area corresponding to the eye position
Up display of the vehicle. 9. The method of claim 8,
Wherein the second image area is formed by the light rays other than the main light beam output from the plurality of sub pixels. An eye tracking unit for tracking an eye position of a driver or a user;
A determining unit for determining a positional relationship between the eyeball position and a predetermined view window;
A controller for controlling the head-up display corresponding to the eye position based on the view window; And
A three-dimensional image supply unit for providing a three-dimensional image through the head-
Up display of the vehicle. 11. The method of claim 10,
The three-dimensional image supply unit
A video output unit for outputting a basic video on which a reference video and a sub video are integrated;
A lens array for passing the basic image; And
A reflector that reflects an image passed through the lens array and reflects the image onto a windshield,
Up display of the vehicle. 12. The method of claim 11,
Wherein the reflector comprises at least one reflector or mirror,
Wherein the reflector or mirror has a concave surface corresponding to a curved surface of the windshield. 11. The method of claim 10,
The control unit
If both the driver's or user's two eye positions are within the viewing window, turning on all pixels or pixels in the base image of the head-up display,
Turning off both the pixel or the pixel in the base image of the head-up display when both of the two eye positions are out of the viewing window,
And turns off at least one of the subpixels contained in each of the pixels or the pixels in the base image of the head-up display when some of the two eye positions are out of the viewing window. 11. The method of claim 10,
Wherein the determination unit determines a position ratio by comparing the two eye positions of the driver or the user with the position of the view window,
Wherein the control unit determines to activate among the plurality of pixels constituting the base image or the sub-pixels included in each of the pixels corresponding to the position ratio. The method according to claim 13 or 14,
Wherein when the subpixel is turned off, at least one auxiliary image that is visible at a position out of the viewing window is deleted. 11. The method of claim 10,
Wherein the view window is a first image area passing through a principal ray output from a pixel or pixel constituting a base image of the head up display and is determined in proportion to the size of the base image. 17. The method of claim 16,
Wherein the pixel or the pixel includes a plurality of subpixels and the plurality of subpixels are capable of outputting a plurality of auxiliary images corresponding to the basic image. 18. The method of claim 17,
Wherein the control unit selectively deactivates at least one of a second image area displayed outside the first image area corresponding to the eye position. 19. The method of claim 18,
Wherein the second image area is formed by the light rays other than the principal ray output from the plurality of sub pixels.

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