DE102018206021A1 - Head-up display device for vehicles and method for controlling the same - Google Patents

Abstract

There is provided a vehicle head-up display device (HUD) comprising: a display unit divided into a first display area and a second display area; a folding mirror configured to reflect a first image onto the first display area; an image forming unit (PGU) adapted to project the first image directly onto the folding mirror; and a control unit configured to set a projection distance and a magnification, and to control the PGU to output the first image to the first display area and output a second image to the second display area. In this case, the first image is a virtual image and the second image is a real image.

Description

background

Field of the invention

The present invention relates to a head-up display device for vehicles and a method for controlling the same.

Discussion of the Prior Art

Recently, with the introduction of vehicles equipped with a head-up display, also known as HUD, the interest of users in this device has increased.

Such a HUD device is a device that provides vehicle operation information such as driving information or navigation information of a vehicle without being affected by the driver's front view, i. the driver's main direction during operation of an automobile or an airplane by the driver to deviate. An original HUD device was designed such that the device was mounted on an aircraft, in particular a fighter aircraft, to provide flight information to the pilot during the flight of the aircraft. A vehicle HUD device has been developed by applying such a principle to a vehicle.

For example, if a vehicle is traveling at 100 km / h, a driver may need about two seconds to look at a dashboard and then look at the road. Based on this assumption, the vehicle moves about 55 m, so there is always the risk of an accident.

To mitigate this danger, a vehicle HUD has been developed that allows the driver to perceive important operational information or route information regarding a vehicle without requiring the driver to look away from the road while driving, by providing dashboard information (Speed, mileage, speed and the like) are displayed in the driver's main direction.

However, a prior art HUD device displays the operating information in the driver's front view in an overlapping manner, depending on the driver's eye level. In this case, when the altitude at which the operation information should be displayed has been changed within the driver's field of view, the operation information has been displayed without considering the perspective of the actual view.

1A to 1C illustrate a HUD device according to the prior art.

A conventional HUD device uses a single image forming unit (PGU). When displaying a plurality of operation information items, such a PGU has the problem of limited display area due to limitation of the driver's angle of view caused by a single projection distance (focus) and a single magnification. Therefore, in the prior art, for a display of a plurality of contents, the main information image must be reduced or moved.

In this case, if the height of the operation information displayed in a lower end area, as in 1A and 1B is moved vertically in the direction of the Y-axis, it is possible that the front view of the driver is partially blocked.

Further, the focal distance of a driver varies depending on the speed. After the in 1C However, as shown in the prior art, an HUD image having a fixed focal distance is displayed so that the driver's focal distance may be different from the focal distance of the HUD image. Accordingly, impairments may occur while driving.

In this context, the Korean Patent Publication No. 10-2009-0075997 entitled "Vehicle head-up display device" is a technique for enlarging a driver's viewing area with respect to a HUD to allow the driver to easily recognize driving information by providing a panel having a higher resolution than an input image source.

Overview of the invention

An embodiment of the present invention provides a head-up display device for vehicles configured to allow a driver to recognize vehicle information with minimal eye movement while driving by distinguishing areas displayed on a display unit based on the content and by providing content information for each of the different areas are displayed, and it further provides a control method therefor.

However, the technical tasks of the embodiments of the present invention are not limited to the foregoing, and other technical tasks may be given.

According to a first aspect of the present invention, a vehicle head-up A display device (HUD) comprising: a display unit divided into a first display area and a second display area; a folding mirror configured to reflect a first image onto the first display area; an image forming unit (PGU) adapted to project the first image directly onto the folding mirror; and a control unit configured to set a projection distance and a magnification, and to control the PGU to output the first image to the first display area and output a second image to the second display area. In this case, the first image is a virtual image and the second image is a real image.

The display unit is formed by applying an organic light emitting diode panel (OLED) to a transparent glass. In this case, a region of the transparent glass in which the OLED panel is not applied may correspond to the first display region, and a region of the transparent glass in which the OLED panel is applied may correspond to the second display region.

The OLED panel may be applied to one or more lower end portions and side surface portions of the transparent glass.

The control unit may correct distortions of the first image and then perform a control operation for outputting the first image to the first display region.

The control unit may set a projection distance and a magnification according to the vehicle speed and perform a control operation for outputting the first image to the first display area. The projection distance and the magnification according to the speed of the vehicle can be stored as a look-up table in a memory.

The first image may include route information and / or speed information relating to a vehicle, and the second image may include an image captured by an outdoor camera and / or cluster warning information and / or additional information about the route information and / or additional information about the information about the speed ,

According to a second aspect of the present invention, a method for controlling a vehicle head-up display device having a display unit divided into a first display area and a second display area, the method being performed by a control unit, comprising the steps of: detecting a viewing angle according to a head movement and an eyebox of a driver; Setting a magnification corresponding to a projection distance and the viewing angle and performing a control operation for outputting a first image to the first display area; and performing a control operation for outputting a second image to the second display area, wherein the first image is a virtual image and the second image is a real image.

According to each of the aforementioned technical solutions of the present invention, it is possible to provide a driver with a variety of different vehicle information with minimal eye movement by additionally providing a transparent auxiliary display which outputs a real short distance image.

list of figures

• 1A bis 1C eine Head-up-Displayvorrichtung nach einer herkömmlichen Technologie;
• 2 ein Blockdiagramm zur Darstellung einer Fahrzeug-Head-up-Displayvorrichtung nach einem Ausführungsbeispiel der vorliegenden Erfindung;
• 3 einen ersten und einen zweiten Anzeigebereich einer Anzeigeeinheit;
• 4A und 4B Beispieldiagramme, in denen eine Anzeigeeinheit implementiert ist;
• 5 ein Beispieldiagramm, in welchem eine Fahrzeug-Head-up-Displayvorrichtung nach einem Ausführungsbeispiel der vorliegenden Erfindung implementiert ist;
• 6A bis 6D Beispieldiagramme für ein erstes und ein zweites Bild, die in dem ersten und dem zweiten Anzeigebereich angezeigt werden; und
• 7 ein Flussdiagramm zur Darstellung einer Steuerung einer Fahrzeug-Head-up-Displayvorrichtung nach einem Ausführungsbeispiel der vorliegenden Erfindung.

The above and other objects, features and advantages of the present invention will become more apparent to those skilled in the art upon a detailed description of exemplary embodiments thereof with reference to the accompanying drawings, in which:

• 1A to 1C a head-up display device according to a conventional technology;
• 2 10 is a block diagram illustrating a vehicle head-up display device according to an embodiment of the present invention;
• 3 a first and a second display area of a display unit;
• 4A and 4B Example diagrams in which a display unit is implemented;
• 5 an example diagram in which a vehicle head-up display device according to an embodiment of the present invention is implemented;
• 6A to 6D Example diagrams for first and second images displayed in the first and second display areas; and
• 7 a flowchart for illustrating a control of a vehicle head-up display device according to an embodiment of the present invention.

Detailed description of exemplary embodiments

Hereinafter, embodiments of the present invention will be described in detail, so that a person skilled in the art can easily carry them out with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments described herein. Furthermore, to clarify the present invention, parts not related to the invention are omitted from the drawings.

When a part is referred to as having "other" (or "comprising" or "having"), it is to be understood that the part comprises (or includes or comprises) only those elements or both other elements and these elements. unless expressly stated otherwise.

The present invention relates to a vehicle head-up display device 100 ,

According to one embodiment of the present invention, it is by distinguishing areas on a display unit 110 for content and by displaying content information for each of the different areas, it is possible for a driver to perceive vehicle information while driving with minimal eye movement.

The vehicle head-up display device 100 according to an embodiment of the present invention will be described below with reference to the 2 to 6 described.

2 FIG. 10 is a block diagram illustrating a vehicle head-up display device. FIG 100 according to an embodiment of the present invention.

The vehicle head-up display device 100 According to one embodiment of the present invention, a display unit 110 , a folding mirror 120 , a PGU 130 and a control unit 140 on.

The display unit 110 has a first display area 111 and a second display area 113 on, which are different from each other. A first picture is taken in the first display area 111 and a second image is displayed in the second display area 113 displayed.

In this case, the first image is a virtual image representing a focal distance which the driver sees according to the speed of the vehicle, and the second image is a real image.

According to an embodiment of the present invention, it is possible for a driver in a traveling vehicle to recognize vehicle information in an optimal state by separately supplying the vehicle information to the first display area 111 in which a virtual image is displayed, and to the second display area 113 in which a real image is displayed.

3 shows the first display area 111 and the second display area 113 the display unit 110 , 4A and 4B are example diagrams in which the display unit 110 Use finds.

Referring to 3 can the display unit 110 be formed by combining a transparent additional display with a combination mirror.

The display unit 110 may for example be formed by applying an organic light emitting diode panel (OLED) to a transparent glass. In this case, a portion of the transparent glass in which the OLED panel is not mounted may be the first display area 111 and a portion of the transparent glass in which the OLED panel is mounted may correspond to the second display area 113 correspond.

The OLED panel may be applied to one or more lower end portions and side surface portions of the transparent glass.

That is, that the second display area 113 corresponding OLED panel can be arranged only in the lower end of the transparent glass, as in 4A or both in both side surface regions of the transparent glass and in the lower end region of the transparent glass, as shown in FIG 4B shown.

Referring to 2 can the folding mirror 120 a first picture on the first display area 111 reflect. Here, the folding mirror 120 be designed as a plane mirror or aspheric mirror and a first image on the first display area 111 reflect, with the projection distance and magnification under the control of the control unit 140 is set.

The PGU 130 Can the first image directly on the folding mirror 120 when a PGU operation unit (not shown) projects from the control unit 140 is controlled.

The folding mirror 120 and the PGU 130 can like in 5 be arranged and implemented.

5 FIG. 15 is an example diagram in which a vehicle head-up display device according to FIG an embodiment of the present invention is implemented.

Under the control of the control unit 140 projects the PGU 130 a first picture P1 , which is a virtual image, and the folding mirror 120 reflects that from the PGU 130 projected image P1 on the first picture area 111 ,

Thus, the first picture P1 corresponding to a viewing angle (α) and a projection distance PD corresponding to the head movement (a) and an eyebox (b) of the driver, and then to the first display area 111 are displayed.

In this case, information about the driver's eye level such as the angle of view (α) can be obtained directly from a driver. For example, information about the driver's eye level may be automatically detected and subsequently inputted through an eye height detecting device, or eye height information stored in a driver based memory may be retrieved and then inputted.

For example, when a viewing angle detected by an eye height detecting device is high, which is the case when the driver's eye level is high, the control unit may 140 perform a control operation to the height of the in the first display area 111 displayed first image P1 to reduce. If the driver's angle is low, the control unit may 140 perform a control operation to the height of the in the first display area 111 displayed first image P1 to increase.

If the control unit 140 the height of the first picture P1 can not control according to the driver's angle of view, that is, when the driver's head movement and eyebox are outside a predetermined range, the control unit may 140 alternatively, a control process for displaying information regarding the first image P1 in a second picture P2 display the visibility of the first image P1 to raise the main information.

Since that in the first display area 111 displayed image P1 is a virtual image, the driver takes the first picture P1 as true in a projection distance PD.

Furthermore, a second picture P2 in the second display area 113 displayed, which is formed by the applied on the Kombinierspiegel transparent additional display.

Referring to 1 puts the control unit 140 the projection distance and magnification and controls the PGU 130 to output the first image to the first display area 111 and outputting the second image to the second display area 113 ,

In this case, the control unit 140 Correct a distortion of the first image and then a control process to output the first image to the first display area 111 carry out.

That is, the control unit 140 can set the projection distance and the magnification according to the vehicle speed and can perform a second operation to move the first image to the first display area 111 issue.

For this purpose, the projection distance corresponding to the vehicle speed and the magnification in the form of a look-up table can be stored in advance, and the control unit 140 can adjust the projection distance and the magnification of the first image by adjusting the folding mirror 120 controls based on the lookup table.

For example, the projection distance of the first image is a short distance of 2.5 m or more when the vehicle speed is low, and the projection distance of the first image is a long distance of about 7.5 m or less when the vehicle speed is high.

Furthermore, the control unit 140 Combining information regarding a variety of different external input contents such as cluster vehicle information, an image taken by a camera, etc., in the first display area 111 and the second display area 113 to display information to be displayed, and then perform a control operation for outputting the selected information through the first image and the second image.

6A to 6D are example diagrams for the first image in the first display area 111 is displayed, and the second image in the second display area 113 is shown.

For example, the control unit 140 make such a choice and control that main information of a vehicle through a first image and additional information of a vehicle are displayed by a second image.

That means that, as in the 6A and 6B represented, route information, speed information and the like can be represented by the first image, and Additional information of a vehicle can be represented by the second image. In this case, the second display area 113 the display unit 110 as AMOLED ( 6A) or as a segment OLED ( 6B) be formed to display the second image.

Furthermore, as in 6C represented, the control unit 140 make such a selection and control that an image taken by an outdoor camera, as in 6C illustrated, in a cluster displayed vehicle warning information, as in 6D shown, additional information about the route information, additional information on the speed information and the like are displayed in the second image.

However, the information represented by the first image and the second image is not limited thereto, but may be freely changed by the settings of a vehicle. For example, if a vehicle is traveling at low speed or if no vehicle is driving ahead, the control unit may 140 make such a selection and control that the main information of the vehicle is output in the second image.

The control unit 140 may include a communication module (not shown), a memory (not shown), and a processor (not shown).

The communication module may include both a wired communication module and a wireless communication module for transmitting data to or from a device within the vehicle. The wired communication module may be implemented using a power line communication device, a telephone line communication device, a cable home (MoCA), Ethernet, IEEE1294, a unified wire home network, or an RS-485 control device. Further, the wireless communication module may include wireless local area network (WLAN), Bluetooth, HDR, WPAN, UWB, ZigBee, pulsed radio, 60GHz WPAN, binary CDMA, wireless USB technology, HDMI wireless technology, and the like be implemented.

Preferably, the communication module may transmit data to or receive data from internal devices of the vehicle via controller area network communication (CAN).

A memory stores a program for controlling the head-up display device, and a processor executes a program stored in the memory.

In this case, a memory is collectively referred to as a non-volatile memory device that holds stored information even when power is not supplied, and a volatile memory device.

Examples of the memory may include a NAND flash memory such as a Compact Flash Card (CF), a Secure Digital Card (SD), a Memory Stick, a Solid State Drive (SSD), or a Micro SD card. SD card, a magnetic computer storage device such as a hard disk drive (HDD), and an optical drive, such as a compact disc (CD) read only memory (ROM) or a digital versatile disc (DVD).

In the 2 illustrated elements according to an embodiment of the present invention may be implemented as software or hardware, such as a Field Programmable Gate Array (FPGA) or an application specific integrated circuit (ASIC), and may perform predetermined functions.

However, the elements are not limited to software or hardware, and may be included in an addressable storage medium or configured to activate one or more processors.

Examples of the elements accordingly include elements such as software elements, object-oriented software elements, class elements and task elements, processes, functions, attributes, operations, subroutines, program code segments, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables.

Elements and functions provided by corresponding elements can be combined to form a smaller number of elements, or they can be subdivided into additional elements.

7 FIG. 10 is a flow chart showing a control of a vehicle head-up display device according to an embodiment of the present invention. FIG.

In a method of controlling a vehicle head-up display device according to an embodiment of the present invention, first, a control unit receives a viewpoint corresponding to a head movement and an eyebox of a driver ( S110 ).

Subsequently, the control unit adjusts magnification according to a projection distance and the driver's angle, and guides one Control process for outputting a first image to a first display region ( S120 ) by. In this case, the control unit may control a PGU configured to project the first image directly onto a folding mirror to output the first image to the first display area.

The control unit may further set the projection distance and the magnification according to a vehicle speed to perform a control operation for outputting the first image to the first display area. In this case, the first image may be enlarged or reduced in accordance with the view angle and the projection distance according to the head movement and the eyebox of the driver, and may be subsequently displayed in the first display area.

Thereafter, the control unit performs a control operation for outputting a second image to a second display area (FIG. S130 ).

In this case, the first image is a virtual image and the second image is a real image.

In the foregoing description, the steps S110 to S130 depending on the application of the present invention divided into further steps or combined into a smaller number of steps. If necessary, some of the steps may also be omitted, or the steps may be performed in a different order than described above. Furthermore, although not described herein, the foregoing, to the 2 to 6D related description to the control method according to 7 Find application.

According to each of the embodiments of the present invention, by additionally providing a transparent auxiliary display that outputs a real short distance image, it is possible to provide a driver with a minimum of eye movement with a variety of different vehicle information.

By displaying a warning light on the second display area 113 it is also possible to reduce the number of components by replacing them with clusters, thus reducing the weight of the product.

An embodiment of the present invention may be implemented as a computer program stored on a computer-executable medium or a recording medium containing computer-executable instructions. A computer readable medium may be any available medium that can be accessed by a computer, and may include volatile and nonvolatile media, and discrete and integrated media. A computer readable medium may be both a computer storage medium and a communication medium. A computer storage medium includes volatile and nonvolatile media and discrete and integrated media implemented in any method or technique for storing information, such as a computer readable instruction, data structure, program module, or other data. A communication medium comprises a computer-readable instruction, a data structure, a program module, or other data, such as modulated data signals such as subcarriers or other transmission mechanisms. An example of the communication medium includes any information transfer medium.

While the method and system according to the present invention have been previously described with reference to specific embodiments, some or all of the elements or processes of the method or system may be implemented by a computer system having a general purpose hardware architecture.

The foregoing description of the present invention is merely an example. It will be apparent to those skilled in the art that the present invention may be readily embodied in many different forms without altering the technical spirit or essential characteristics thereof. The foregoing exemplary embodiments are therefore only examples, and the present invention is not limited thereto. For example, elements described herein as being contained within a single device may be distributed. Likewise, elements described herein as being distributed may be combined.

The scope of the present invention is therefore defined not by the detailed description but by the following claims, and all changes or modifications within the claims or their equivalents are to be understood as falling within the scope of the present invention.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• KR 1020090075997 [0011]

Claims (17)

Vehicle head-up display device (HUD) with: a display unit divided into a first display area and a second display area; a folding mirror configured to reflect a first image onto the first display area; an image forming unit (PGU) adapted to project the first image directly onto the folding mirror; and a control unit configured to set a projection distance and a magnification, and to control the PGU to output the first image to the first display area and output a second image to the second display area; wherein the first image is a virtual image and the second image is a real image. Vehicle HUD device after Claim 1 in which the display unit is formed by applying an organic light emitting diode panel (OLED) to a transparent glass; and wherein a region of the transparent glass in which the OLED panel is not applied corresponds to the first display region, and a region of the transparent glass in which the OLED panel is applied corresponds to the second display region. Vehicle HUD device after Claim 2 in which the OLED panel is applied to one or more lower end portions and side surface portions of the transparent glass. Vehicle HUD device after Claim 1 in which the control unit corrects distortions of the first image and then performs a control process for outputting the first image to the first display region. Vehicle HUD device after Claim 4 wherein the control unit sets a projection distance and an increase according to the vehicle speed and performs a control operation for outputting the first image to the first display area. Vehicle HUD device after Claim 5 in which the projection distance and the magnification corresponding to the speed of the vehicle are stored as a look-up table in a memory. Vehicle HUD device after Claim 5 in which the first image is enlarged or reduced in accordance with a viewing angle and a projection distance corresponding to a head movement and an eyebox of a driver, and then displayed in the first display area. Vehicle HUD device after Claim 7 , further comprising an eye height detecting device configured to detect the driver's angle of view, the controller adjusting the magnification based on the driver's angle of view detected by the eye height detecting device. Vehicle HUD device after Claim 8 in which, when the driver's head movement and eyebox are determined to be out of a predetermined range, the control unit performs a control operation to display information displayed by the first image through the second image. Vehicle HUD device after Claim 7 in which the driver's perspective is obtained directly from the driver or obtained after retrieving driver-based stored angle information in a memory. Vehicle HUD device after Claim 1 in which the first image comprises route information and / or speed information relating to a vehicle, and the second image displays an image captured by an outdoor camera and / or cluster warning information and / or additional information about the route information and / or additional information about the speed information having. Vehicle HUD device after Claim 11 in which, when a vehicle is traveling at low speed or when no vehicle is ahead, the route information and speed information relating to the vehicle included in the first image are output in the second image. Vehicle HUD device after Claim 1 in which the folding mirror is a plane bow or an aspherical mirror. A method of controlling a vehicle head-up display device having a display unit divided into a first display area and a second display area by means of a control unit, the method comprising the steps of: detecting a viewpoint corresponding to a head movement and an eyebox of a driver; Setting a magnification according to a projection distance and the viewing angle and Performing a control operation for outputting a first image to the first display area; and performing a control operation for outputting a second image to the second display area, wherein the first image is a virtual image and the second image is a real image. Method according to Claim 14 wherein performing a control operation to output a first image to the first display area comprises controlling an image forming unit (PGU) configured to project the first image directly onto a folding mirror to output the first image to the first display area. Method according to Claim 14 wherein performing a control operation for outputting a first image to the first display area comprises setting an enlargement and a projection distance corresponding to a vehicle speed and performing a control operation for outputting the first image to the first display area. Method according to Claim 16 in which the first image is enlarged or reduced in accordance with the viewing angle and the projection distance according to the head movement and eyebox of the driver, and then displayed in the first display area.

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