DE102013217266A1 - Display system for a vehicle and method for driving a head-up display for a vehicle - Google Patents

Abstract

The invention relates to a display system (100) for a vehicle, in particular for a car, comprising: a head-up display (HUD); a first communication device (12) having a first position determining unit and a receiving unit; and a control unit (4) connectable to the HUD (5) and the first communication device (12) for driving the HUD (5); wherein the first position determining unit (14) is arranged to determine first position data comprising a current position of the first communication device (12); wherein the receiving unit of the first communication device (12) is arranged to receive second position data comprising a current position of at least one second communication device (19) different from the first communication device (12); and wherein the control unit (4) is arranged to control the HUD (5) based on the first position data and based on the second position data. The invention further relates to a method for driving a HUD (5).

Description

The invention relates to a display system for a vehicle and a method for driving a head-up display for a vehicle.

From the prior art display systems for cars with a head-up display (HUD) are known. Displaying information about a HUD has the advantage that a driver of the car can perceive the information and simultaneously track the traffic. Road safety is thereby advantageously increased.

In the publication DE 10 2011 113 633 A1 For example, a device is described in which by means of an imaging unit, a license plate of a preceding vehicle can be detected. By comparing with a database, it can be determined whether the license plate can be assigned to an object that is known to a user of the device. Such information can then be displayed to the user on the HUD. According to DE 10 2011 113 633 A1 Display options are also possible using augmented reality technology.

In the DE 10 2011 113 633 A1 However, the device described can only detect an object and identify it with an object known to the user if it is located in the spatially restricted image field of the imaging unit or field of view of the user. An identification of objects outside the field of view of the user is hardly possible by means of image recognition technology.

The present invention is therefore based on the object of developing a display system for a vehicle with a HUD, which enables the detection and identification of an object known to the user of the display system, even if this object is outside the field of view of the user. It is also preferable to improve or simplify the display of information relating to this object using augmented reality technology. Finally, a corresponding method for driving a HUD is to be created.

This object is achieved by a display system according to claim 1 and by a method according to claim 13. Particular embodiments are described in the subclaims.

So proposed is a display system for a vehicle, in particular for a car or truck, comprising:
a head-up display (HUD);
a first communication device having a first position determination unit and a reception unit; and
a control unit connectable to the HUD and to the first communication device for driving the HUD;
wherein the first position determining unit is configured to determine first position data including a current position of the first communication device;
wherein the receiving unit of the first communication device is configured to receive second position data comprising a current position of at least one second communication device different from the first communication device; and wherein the control unit is configured to control the HUD based on the first position data and based on the second position data.

Since the receiving unit is set up to receive the second position data, it is not necessary to determine the current position of the second communication device by means of image recognition technology. Even more distant objects can be identified in this way. Characterized in that the control unit is adapted to control the HUD based on the first and the second position data, for. B. for reproducing information relating to the second communication device, when driving z. B. a current relative position of the first and the second communication device or a current distance between the first and the second communication device are taken into account, which z. B. can improve the driving of the HUD using augmented reality technology.

The first communication device may be fixed or can be arranged in or on the vehicle. The first communication device can be detachably fastened to a holding device, which can be arranged firmly in the interior of the vehicle, for. B. on a center console, on a front fitting or on the windshield of the vehicle. In particular, the first communication device may be arranged or arrangeable in or on the vehicle such that it is in a predetermined position relative to an eye position of the driver when driving. This may serve to present information concerning the second communication device using augmented reality technology. The first communication device is normally mobile and / or non-stationary. The first communication device can, for. As a navigation device, a smartphone or a tablet PC. The first communication device may be portable, e.g. B. in or with one hand. For example, it may have a weight of less than 500 g or less than 300 g. The second communication device can be fixed in or on another vehicle arranged or be arranged. It can be carried by a pedestrian. It may therefore also be movable and / or not stationary. It can, for. As a navigation device, a smartphone or a tablet PC. The second communication device may be portable, e.g. B. in or with one hand. It can weigh less than 500 g or less than 300 g. The control unit can, for. As a processor, microcomputer, microcontroller or an FPGA. The first communication device may include the control unit. This can therefore be part of the first communication device. Likewise, the control unit may be implemented separately from the first communication device.

The first position determination unit may be a receiving unit of a global navigation satellite system, for. B. a GPS unit. The first position data and the second position data normally each include coordinates in a terrestrial three-dimensional coordinate system. Typically, the first communication device is located in or on the vehicle during a journey of the vehicle. The current position of the first communication device thus usually coincides with a current position of the vehicle. The second communication device is usually carried by a second user of the second communication device. The second communication device is thus usually associated or assignable to this second user; in particular, it is spatially assigned or assignable to it. For example, the second communication device is disposed in or on the body of the second user. The second communication device can also be arranged in or on a second vehicle with which the second user drives. The current position of the second communication device thus usually coincides with a current position of the second user.

The receiving unit of the first communication device may be configured to receive the second position data via a wireless data or communication connection. It may be z. B. may be a wireless Internet connection, a cellular connection or another wireless connection. The first communication device may include a transmitting unit in addition to the receiving unit.

A specific embodiment of the display device is characterized in that the control unit is set up to determine a current distance between the first communication device and the second communication device based on the first position data and the second position data and the HUD only for the reproduction of the second communication device information or only to control the reproduction of the second user information, if the current distance between the first and the second communication device is smaller than a predetermined distance. It can also be provided that a computer center via which the first communication device and the second communication device z. B. are connected via a wireless Internet connection is set up, the second position data in this case does not forward to the first communication device. The information mentioned is thus advantageously displayed only when the second communication device and / or the second user are in the vicinity of the first communication device or in the vicinity of the first user. The predetermined distance can z. 20 km, 10 km, 1 km, 500 m or 300 m.

The information concerning the second user may include an identity of the second user, for example his name or at least one character, pictogram or image associated with the second user. The first position data and / or the second position data and / or the information relating to the second user are preferably in digital form, so are z. B. transferable and / or storable in digital form. The information relating to the second user is therefore preferably at least wirelessly transferable or communicable to the first communication device. The second communication device can be set up, the information relating to the second user, the z. B. may be stored in the second communication device to send, z. B. to a social network, in particular to a computer system of a social network (see below). The computer system of the social network can be set up to transmit the information concerning the second user, which information may also be stored in the computer system, to the first communication device. The first communication device may be configured to receive the information concerning the second user.

In the information relating to the second communication device, it may, for. B. to its current position, the current distance between the first and the second communication device or a relative position between the first and the second communication device. The control unit may be configured to determine the relative position.

The HUD normally includes an imager, e.g. As an LCD or a TFT, an imaging optics and a projection screen. The screen is usually transparent. The projection surface may be a windshield of the car or the truck. The projection screen can also be different from the windshield separate surface or disc may be formed, the z. B. is arranged in front of the windshield as seen by the driver of the vehicle. The imager is usually set up to project the display objects onto the projection surface via the imaging optics, where they are displayed to a viewer, e.g. B. for the driver, are visible. The projection surface of the HUD is normally arranged in the vehicle in such a way that the display objects are projected into a field of view of the driver, when he, for. B. followed by the windshield traffic in front of him or next to him. The driver can then perceive the display objects without diverting his attention from the traffic. This advantageously increases the traffic safety.

The control unit can be set up to control the HUD, in particular its imager, in such a way that display objects of different shape, color and size are projected at different positions onto the projection surface of the HUD and are perceptible by the driver of the vehicle. The display objects can, for. As letters, numbers, texts, pictograms, icons, geometric figures, lines, arrows o. Ä. Include. By means of the display objects z. B. displayed or reproduced the information that concerns the second user. For example, a symbol or an icon associated with or representing the second user may be displayed. It can also display the name of the second user in text form. By means of the display objects z. B. also displayed or reproduced the information concerning the second communication device.

The control unit may also store a three-dimensional environment map. The control unit may then be arranged to determine a relative arrangement between the first communication device and objects stored in the three-dimensional map or a relative arrangement between the second communication device and objects stored in the three-dimensional map. The display objects can then display information relating to this relative arrangement. The objects stored in the three-dimensional map may be z. For example, roads, rivers, towns or landmarks such as mountains or buildings.

A further specific embodiment of the display system additionally comprises the already mentioned at least one second communication device different from the first communication device, each having a second position determination unit and each having a transmission unit, wherein the second position determination unit is in each case set up to determine the second position data which contains the current position of the comprise respective second communication device, and wherein the transmitting unit of the second communication device is each configured to send the second position data.

Also, the position determination unit of the second communication device, a receiving unit of a global navigation satellite system such. B. be a GPS unit. The transmission unit of the second communication device can be configured to send the second position data via a wireless data or communication connection, for. B. via a wireless Internet connection, a cellular connection or other wireless connection.

• – wobei das soziale Netzwerk, insbesondere eine Rechenanlage des sozialen Netzwerkes, eingerichtet ist, die zweiten Positionsdaten nur dann über die erste Datenverbindung an das erste Kommunikationsgerät zu übermitteln und/oder
• – wobei das erste Kommunikationsgerät eingerichtet ist, die zweiten Positionsdaten über die erste Datenverbindung nur dann zu empfangen,

wenn ein erster Nutzer des sozialen Netzwerkes über die erste Datenverbindung bei dem sozialen Netzwerk angemeldet ist. Der erste Nutzer des sozialen Netzwerkes ist normalerweise der Fahrer des Fahrzeugs. A further specific embodiment of the display system is characterized in that the first communication device is set up, via a first data connection, for. A wireless internet connection, to be connected to a social network,

• - The social network, in particular a computer system of the social network is set up to transmit the second position data only via the first data connection to the first communication device and / or
• Wherein the first communication device is set up to receive the second position data via the first data connection only

if a first user of the social network is logged on to the social network via the first data connection. The first user of the social network is usually the driver of the vehicle.

Likewise, the second communication device can be set up, via a second data connection, for. B. via a wireless Internet connection to be connected to the social network and to send the second position data on the second data connection to the social network only if a second user of the social network is logged on the second data connection to the social network. Normally, the second user of the social network is identical to the second user of the second communication device. In this embodiment, the display system so z. For example, they can be linked or combined with existing social networks. Thus, the driver information about a variety of users of the social network can be displayed.

Known examples of such a social network are Facebook, LinkedIn, Xing, Twitter, Netlog or the like. Thus, the social network described here is usually an Internet-based network community of a large number of users who exchange data with one another or make each other accessible, e.g. In the form of text, image, music or video content or files. The social network described here is therefore preferably Internet-based. The social network usually includes at least one computer in which the data of a plurality of users of the social network (user data) are stored or storable. Users can be connected to the computer via wireless and / or wired Internet connections. You can then usually at least partially access the user data. The social network also usually includes a variety of services, e.g. B. for managing and displaying user data and / or for sending and receiving user data or messages between different users of the social network. The services may be computer programs executable on the computer. Each user is typically associated with a user account that includes the user data associated with that user and the services provided to that user. For the benefit of the user account, the particular user typically needs to log in to the social network by entering an access identifier over a data connection, typically an internet connection. The access code is normally stored in the computer system. Of course, it is also conceivable that the second position data are transmitted directly from the second communication device to the first communication device, usually also via a wireless data connection, eg. B. a telecommunication connection or another radio connection.

• – die Steuereinheit eingerichtet ist, das HUD nur dann zum Anzeigen von das zweite Kommunikationsgerät betreffenden Informationen und/oder nur dann zum Anzeigen von einen Nutzer des zweiten Kommunikationsgerätes betreffenden Informationen anzusteuern und/oder
• – das soziale Netzwerk, insbesondere eine Rechenanlage des sozialen Netzwerkes, eingerichtet ist, die zweiten Positionsdaten nur dann an das erste Kommunikationsgerät zu übermitteln und/oder
• – dass das erste Kommunikationsgerät eingerichtet ist, die zweiten Positionsdaten nur dann zu empfangen,

wenn der zweite Nutzer des sozialen Netzwerkes einer von dem ersten Nutzer des sozialen Netzwerkes bestimmbaren Teilmenge aller Nutzer des sozialen Netzwerkes angehört. Der erste Nutzer, gewöhnlich also zugleich der Fahrer des Fahrzeugs, kann auf diese Weise bestimmen, dass ihm über das HUD nur eine eingeschränkte Menge von Informationen angezeigt wird. Another specific embodiment of the display system is characterized in that

• The control unit is set up to control the HUD only for displaying information concerning the second communication device and / or only for displaying information relating to a user of the second communication device and / or
• - The social network, in particular a computer system of the social network, is set up to transmit the second position data only to the first communication device and / or
• That the first communication device is set up to receive the second position data only

if the second user of the social network belongs to a subset of all users of the social network determinable by the first user of the social network. The first user, usually the driver of the vehicle at the same time, can thus determine that only a limited amount of information is displayed to him via the HUD.

The subset may be z. These may be, for example, those other users of the social network who are associated as friends with the first user in the social network, or a subset of the other users whom they are friends of and are selectable by the first user. The user data associated with a first user of the social network usually includes public user data that is readable to all users of the social network and private user data that is at least partially readable only for a limited number of the other users of the social network. The statement or characteristic that another user is associated with the first user as a friend may then include that of the first user's private user data 33 for the other user are at least partially readable.

A further embodiment of the display system is characterized by an image acquisition device that can be connected to the control unit, in particular a camera, wherein the control unit is set up to control the HUD based on image data captured by the image acquisition device. Alternatively or additionally, the display system may also include a locating device connectable to the control unit, in particular a radar device, wherein the control unit is then set up to control the HUD based on location data acquired by the locating device.

The image recording device and / or the locating device can be arranged or be arranged in or on the vehicle, in which the first communication device is arranged or can be arranged. The image capture device and / or the location device are normally connectable or connected to the control unit via a wired or wireless data link. The image data and / or the location data can be transmitted to the control unit.

In particular, the control unit can be set up to fuse the image data and / or the location data with the first and / or second position data. For example, the image data and / or the location data can be used to determine the current position of the second communication device or to determine a relative position between the first and the second communication device. The control unit can also be set up to detect or identify an object by merging the image data and / or the location data with the first and the second position data, in which or on which the second communication device is arranged. The second Communication device usually moves with this object. Is the second communication device z. B. arranged in a second vehicle that drives in front of the vehicle in which the first communication device is arranged, the control unit may be configured to recognize by means of a corresponding image recognition software that the second communication device is moved with the second vehicle. Accordingly, the control unit can also be set up to recognize when the second communication device is carried by a pedestrian, a cyclist, a motorcyclist or a train.

Another embodiment of the display system is characterized in that the control unit is arranged to control the HUD using augmented reality technology. For example, the control unit may be configured to determine, based on the first position data and the second position data and / or based on the image data and / or based on the location data, that the second communication device is within a field of view of a driver of the vehicle, and the HUD in to control this case such that a position of the display objects on the projection surface of the HUD is at least partially dependent on a line of sight of the driver on the second communication device or depending on a line of sight of the driver on an object in which or on which the second communication device is arranged. The object may be z. B. to act a vehicle in or on which the second communication device is arranged and with which moves the second communication device. The object may also be a pedestrian carrying the second communication device. To determine the viewing direction, the display system z. B. include a further image pickup device which is arranged or can be arranged in or on the vehicle and which is connected to the control unit or connectable. The further image pickup device may be directed to the driver. It can be set up to capture further image data. The control unit may be configured to determine an eye position of the driver relative to the HUD on the basis of the further image data, in particular relative to the projection surface of the HUD.

In a further embodiment of the display system, the first communication device, the second communication device and the control unit are configured to repeatedly determine the first position data, determine the second position data, send the second position data, receive the second position data and drive the HUD, preferably at a frequency of at least 1 Hz, of at least 5 Hz, of at least 10 Hz, of at least 20 Hz or of at least 50 Hz. The image acquisition device, the location device and the further image acquisition device can also be set up, the acquisition of image data and / or the location data and / or the further image data repeatedly, preferably also with a frequency of at least 1 Hz, at least 5 Hz, at least 10 Hz, at least 20 Hz or at least 50 Hz. In this way, the driving of the HUD and projecting the display objects, esp In particular, their positioning on the projection surface of the HUD, the changing position of the second communication device relative to the first communication device are constantly adjusted. This is particularly important when controlling the HUD using augmented reality technology.

In order not to distract the driver's attention unnecessarily from the traffic, another embodiment of the display system, characterized in that the control unit is adapted to control the HUD depending on a speed of the first communication device and / or depending on a received by means of the first communication device danger message. Traffic safety can thus be increased.

For example, the control unit may be configured to display information concerning the second communication device and / or information concerning a user of the second communication device and / or further information only or to completely or at least partially hide this information if a speed of the first Communication device is less than a predetermined speed. The predetermined speed can z. 80 km / h, 60 km / h, 50 km / h, 40 km / h or 30 km / h. Also, the control unit may be configured not to display information concerning the second communication device and / or information concerning a user of the second communication device or to completely or at least partially hide this information when the first communication device receives the danger message, e.g. B. via a traffic information service. The first communication device may be configured to receive the danger message via a wireless Internet connection, via a telecommunication connection or via another radio connection. When the danger message can be z. As an accident report, a traffic jam, a warning of smoothness, another traffic report or a severe weather warning.

Another specific embodiment of the display system is characterized in that the control unit is set up to control the HUD in such a way that information that is the second Affect communication device and / or relate to a user of the second communication device and / or further information, at least partially moved over the screen of the HUD when the current distance between the first and the second communication device falls below the predetermined distance, after the current distance previously larger was as the predetermined distance, and / or when the user of the second communication device logs on to the social network. In this way, z. B. the driver to be made aware that the second communication device or its users are now in the vicinity or that the user of the second communication device has logged into the social network.

Further proposed is a corresponding method for controlling a head-up display (HUD), in particular a HUD of a display system according to the invention, for a vehicle, in particular for a car or truck, comprising the steps of: determining first position data which is a current position of a comprise first communication device, by means of a position determination unit of the first communication device;
Determining second position data comprising a current position of a second communication device different from the first communication device by means of a position determination unit of the second communication device;
Transmitting the second position data to the first communication device; such as
Driving the HUD by means of a control unit connected to the first communication device and to the HUD based on the first position data and the second position data.

In a specific embodiment of the method, the transmission may include transmitting the second position data via the second data connection referred to in the display system from the second communication device to the described social network when a second user of the social network is connected via the second data connection social network is registered, and that the second position data on the said first data connection from the social network to the first communication device are sent when a first user of the social network is logged on the first data connection to the social network.

In a further specific embodiment of the method, provision may be made for the second position data to be transmitted to the first communication device only if the second user of the social network belongs to a subset of all users of the social network determinable by the first user of the social network.

In a further embodiment of the method, the HUD can additionally be triggered based on the image data and / or location data mentioned in connection with the display system. For example, the HUD may be accessed using augmented reality technology. For example, the driving of the HUD may be performed such that a position of the display objects on a projection surface of the HUD is at least partially dependent on a viewing direction of the driver on the second communication device or depending on a viewing direction of the driver on an object in or on the second communication device is arranged.

In a further embodiment of the method, the determination of the first position data, the determination of the second position data, the transmission of the second position data and the driving of the HUD is performed repeatedly, preferably with a frequency of at least 1 Hz, of at least 5 Hz, of at least 10 Hz or at least 20 Hz. The said process steps are therefore carried out as continuously as possible. The acquisition of the image data mentioned in connection with the display system and / or the location data and / or the further image data can also be carried out repeatedly, preferably with the respective same frequency.

All features described in connection with the display system should also be combined and claimed as method steps with the method proposed here.

An embodiment of the invention is illustrated in the drawings and will be explained in more detail with reference to the following description. Show it:

1 schematically a first car, in which a display system is arranged, which in particular comprises a first communication device and a head-up display (HUD), a second car, in which a second communication device is arranged, and a computer, wherein the first and the second communication device are each connected via a wireless Internet connection to the computer system,

2a schematically the HUD off 1 .

2 B schematically the first communication device 1 .

2c schematically the second communication device 1 .

3a schematically the first and the second car off 1 in a first relative arrangement with each other, wherein a driver of the first car views the second car along a first viewing direction through the HUD,

3b schematically a view of the second car, as they are the driver of the first car when looking through a projection of the HUD according to the in 3a represents first relative arrangement shown, wherein information perceivable to the driver is projected onto the projection screen,

3c schematically the first and the second car off 1 in a second relative arrangement to each other, wherein the driver of the first car views the second car along a second line of sight through the HUD, as well

3d schematically a view of the second car, as they are the driver of the first car when looking through the projection of the HUD according to the in 3c represents shown second relative arrangement, wherein also perceptible to the driver information is projected onto the projection screen.

1 schematically shows a display system 100 for a first car 1 in particular a first communication device 12 , a head-up display (HUD) 5 and a control unit 4 includes. Shown are also a second car 2 and a computer 3 , In the first car 1 are also a first camera 6 and a second camera 7 each firmly arranged. The HUD 5 as well as the cameras 6 and 7 are each via wired or wireless data connections 8th with the control unit 4 connected. The control unit 4 , this is an on-board computer of the car 1 is to act, the HUD is set up 5 to display information.

A likewise schematic representation of the HUD 5 shows 2a , Here and below, recurrent features are each provided with identical reference numerals. The HUD 5 includes an imager 9 , here z. B. in the form of an LCD, an imaging optics 10 and a projection screen 11 , The projection screen 11 not only includes a windshield of the car here 1 but at least partially its side windows. Information on the HUD 5 are displayed are for a driver of the car, not shown here 1 perceptible without his having to turn his attention away from traffic.

In the 1 shown first camera 6 is oriented such that its image field at least partially with a field of view of the driver of the car 1 overlaps when passing through the windshield of the car 1 followed the traffic. The first camera 6 can also be mounted rotatably or pivotally, so that their orientation is variable. The camera 6 So primarily serves to accommodate objects, eg. B. of other vehicles o. Ä., In traffic before the car 1 move or the front of the car 1 are arranged, ie in the direction of the driver through the windshield of the car 1 , From the camera 6 recorded first image data can be sent to the control unit for further processing 4 be transmitted. The control unit 4 can z. B. have an image recognition software for the evaluation of image data. Alternatively or in addition to the first camera 6 can be in or on the first car 1 Also, a radar device, not shown here, may be arranged for recording location data. The radar device can then also for determining the position or distance of objects, for. B. of cars, be provided.

The second camera 7 is so inside the car 1 arranged and aligned that it is adapted to accommodate the face of the driver when sitting on the driver's seat while driving and z. B. viewed through the windshield traffic. The second camera 7 is set up, an eye position of the driver relative to the projection screen 11 of the HUD 5 to determine what z. B. the presentation of information on the HUD 5 using augmented reality technology. The information is thus transferred to the HUD 5 projects that they fit into a driver's view of real objects in the traffic ahead of him, e.g. B. on other cars. From the second camera 7 recorded second image data can also for evaluation and processing to the control unit 4 be transmitted. This also includes a second image recognition software for evaluating the second image data.

Also in the first car 1 arranged is a first communication device 12 , which is a portable smartphone. This has z. As a weight of less than 300 g. The first communication device 12 is via a wireless data connection 13 or possibly a connection cable with the control unit 4 connected so that there is data with the control unit 4 can exchange. A schematic representation of the first communication device 12 is in 2 B played.

The first communication device 12 includes a position determination unit 14 in the form of a GPS receiving unit for determining first position data, which is a current position of the first communication device 12 in a terrestrial Include 3D coordinate system. Furthermore, the first communication device comprises a computing unit 15 , a data store 16 , a touch screen 17 and a communication unit 18 , The communication unit 18 is used to send and receive data over a wireless Internet connection and / or via a telecommunication connection. Here is the first communication device 12 z. B. in a holder, not shown here be releasably inserted, which is attached to a dashboard in the front region of the interior of the car 1 is arranged so that the driver the touch screen 17 if necessary, can look at while driving. At the driver of the first car 1 it is a user of the first communication device 12 , who is also the first user 33 is called (see 3a and 3c ).

In the second car 2 is a second communication device 19 arranged, which is also a the first communication device 12 identical portable smartphone acts. Also the second communication device 19 that is schematically in 2c can be shown in one in the interior of the second car 2 arranged holder be detachably inserted. Likewise, it may be z. B. in a trouser pocket of a driver of the second car 2 are located. The driver of the second car 2 is a user of the second communication device 19 , In the following, he will also be the second user 34 called (see 3a and 3c ). Like the first communication device 12 so also includes the second communication device 19 a position determination unit 20 in the form of a GPS receiver unit for determining second position data, which is a current position of the second communication device 19 in a terrestrial 3D coordinate system. Furthermore, the second communication device comprises 19 an arithmetic unit 21 , a data store 22 , a communication unit 23 for sending and receiving data via a wireless Internet connection and / or via a telecommunication connection as well as a touch screen 24 ,

The computer system 3 in 1 includes a communication unit 25 for sending and receiving data via wholly or partly wireless Internet connections and / or over wholly or partially wired Internet connections. The computer system 3 further comprises at least one arithmetic unit 28 , z. B. in the form of a plurality of interconnected processors, and at least one memory unit 29 , z. B. in the form of a variety of magnetic storage media. These are about the arithmetic unit 28 with the communication unit 25 connected. About the computer system 3 Social network services can be provided. These are z. In the form of computer programs 30 in the storage unit 29 stored and can on the arithmetic unit 28 be executed. The computer system 3 is a server of a social network.

At the first user of the first communication device 12 it is a first user of the social network and the second user of the second communication device 19 is a second user of the social network. This means that the first user 33 via a first wireless internet connection 27 between the first communication device 12 and the computer system 3 register with the social network by a corresponding first identifier, the z. In the storage unit 29 stored in the first communication device 12 enters and to the computer system 3 transmitted. Likewise, the second user may have a second wireless internet connection 26 between the second communication device 19 and the computer system 3 log on to the social network by a corresponding second identifier, the z. In the storage unit 29 is stored, to the computer system 3 transmitted.

When the second user is logged in to the social network, he can get the second location information via the second internet connection 26 to the computer system 3 send. If at the same time the first user 33 logged in to the social network, the computer 3 be set up, the second position data over the first Internet connection 27 to the first communication device 12 forward, where they z. B. in a data memory, not shown here, the control unit 4 can be stored.

In an embodiment not explicitly shown here, the second position data can also be transmitted directly wirelessly from the second communication device 19 to the first communication device 12 be transmitted so that it is the computer system 3 not required to transmit the second position data.

The first user 33 - So here the driver of the first car 1 - are first user data 31 assigned in the storage unit 29 are saved and the first user 33 by means of the social network services can manage if he has the first Internet connection 27 with the computer system 3 is connected and when it is logged into the social network by transmitting the first identifier. For example, he may be the first user data 31 Read, modify, delete, change the appearance or add new data. Similarly, the second user 34 - here so z. B. the driver of the second car 2 - second user data 32 assigned in the storage unit 29 stored and which the second user can manage by means of the social network services, when over the second internet connection 26 with the computer system 3 is connected and when it is logged into the social network by transmitting the second identifier.

The social network includes the computer system 3 and a plurality of users, of which only the first and second users are shown here. The users of the social network are each in the storage unit 29 stored user data. You can log in to the social network using appropriate Internet connections and manage their respective user data. You can at least partially access the user data of the other users of the social network for at least reading. You can also exchange data with each other.

In the present example, the first and second users of the social network are connected in the social network as friends, as indicated by the arrow 32 is indicated. This means here that they each allow the other at least partial read access to their respective private user data. In the embodiment of the invention described here are the second of the communication device 19 to the computer system 3 transmitted second position data only to the first communication device 12 forwarded or is the first communication device 12 set up to receive the second position data only when the first and second users in the social network are connected as friends. Corresponding further position data, which from a further communication device not shown here another user of the social network to the computer 3 should not be transmitted to the first communication device, if the other user and the first user 33 are not connected as friends in the social network. The one with the first user 33 Social network users connected to the social network normally form a subset of all users of the social network, that of the first user 33 is determinable. In particular, the first user 33 exclude another user who belongs to this subset from this subset.

3a and 3c show schematically a side view of the display system 100 out 1 , where the first car 1 and the second car 2 in the 3a and 3c are arranged differently relative to each other.

3a shows the first car 1 and the second car 2 in a first relative arrangement to each other. Here is the second car 2 in which the second communication device 19 is carried along, in the driver's field of vision 33 of the first car. A first current distance between the first car 1 entrained first communication device 12 and in the second car 2 entrained second communication device 19 is z. B. 20 m. 3b shows a view of the car 2 how she felt about the driver 33 of the car 1 that is the first user 33 in the in 3a shown first relative arrangement when looking through a windscreen of the car 1 offers. Here covers the windshield of the car 1 the projection surface 11 of the HUD 5 at least partially.

3c shows the first car 1 and the second car 2 in a second relative arrangement to each other. The second relative arrangement is different from the first relative arrangement. In particular, there is a second current distance between that in the first car 1 entrained first communication device 12 and in the second car 2 entrained second communication device 19 slightly larger in the second relative arrangement than in the first relative arrangement, e.g. For example, the second current distance is in 3c 30 m. Also in the second relative arrangement is the second car 2 in the driver's field of vision 33 of the first car 1 , 3d shows a view of the car 2 how she felt about the driver 33 of the car 1 in the in 3c shown second relative arrangement when looking through the at least partially transparent projection surface 11 of the HUD 5 offers.

In the in the 3a and 3c illustrated situation is the first user 33 by means of the first communication device 12 over the first internet connection 27 with the computer system 3 connected and logged into the social network. Similarly, in the in the 3a and 3c illustrated situation of the second user 34 by means of the second communication device 19 over the second internet connection 26 with the computer system 3 connected and logged into the social network. The position determination unit 20 of the second communication device 19 determines repeatedly the second position data of the second communication device 19 , in particular its current 3D coordinates in a terrestrial coordinate system, z. B. with a frequency of 50 Hz. With the same frequency, the second position data by means of the communication unit 23 of the second communication device 19 over the second internet connection 26 to the computer system 3 , in particular at its communication unit 25 , and from this again via the first internet connection 27 to the communication unit 18 of the first communication device 12 transmitted. There they will be received and sent to the control unit 4 forwarded, where they are further processed.

The position determination unit 14 of the first communication device 12 also determines with a frequency of 50 Hz first position data of the first communication device, in particular current 3D coordinates of the first communication device 12 in said Erdfesten coordinate system, and forwards these to the control unit for further processing 4 further. The control unit 4 determined based on the first and second position data in particular the current distance between the first communication device 12 and the second communication device 19 and a relative position between the two communication devices 12 and 19 , In this case, determining the relative position z. B. determining 3D coordinates of the second communication device 19 in one with the first communication device 12 or with the first car 1 moving coordinate system.

The control unit 4 now controls the HUD 5 , in particular its imager 9 , based on the first and second position data. This includes in particular that the control unit is the HUD 5 only for playback of the second communication device 19 information concerned 35 or for replay by the second users 34 information concerned 36 or for playback of further information 37 on the projection screen 11 controls when the from the control unit 4 certain current distance between the communication devices 12 and 19 is smaller than a predetermined distance of z. B. 1 km, which is stored in the control unit or is storable. The default distance may be from the first user 33 to be changed. The information mentioned will be the first user 33 So only displayed when the second communication device 19 located near. In the in the 3a -D shown situations is the actual distance between the communication devices 12 and 19 each less than the predetermined distance of 1 km, leaving the control unit 4 the HUD 5 for reproducing the second communication device 19 information concerned 35 , to play the second user 34 information concerned 36 and for playback of further information 37 controls.

The control unit 4 determined based on the first position data and a current speed of the first communication device 12 , She controls the HUD 5 then depending on the speed thus determined. To increase traffic safety controls the control unit 4 the HUD 5 but only for the reproduction of the second communication device 19 information concerned 35 and / or for the reproduction of the second user 34 information concerned 36 and / or for playback of further information 37 on the projection screen 11 when, from the control unit 4 certain current speed of the first communication device 12 is less than a predetermined speed of z. B. 60 km / h. The value of the given speed is determined by the first user 33 variable. It can also be provided that on the projection screen 11 reproduced information in increasing the current speed of the first communication device 12 be gradually reduced. So it can be for the information 35 , the information 36 and the information 37 z. B. each give different predetermined speeds, each with different values. In an analogous way, the on the projection screen 11 reproduced information in reducing the current speed of the first communication device 12 then be gradually increased again.

Likewise controls the control unit 4 the HUD 5 depending on a danger message. It may be a traffic message, z. As a traffic jam message, an accident report or to report an approaching accident car act, or act a storm warning. The danger message can z. From the first communication unit 12 received and then to the control unit 4 be transmitted. It can be provided that the information 35 . 36 and 37 be completely or partially hidden when receiving a danger message, so that the driver can devote his entire attention to the traffic. The danger message is preferably in digital form, z. B. in a predefined data format, and can be sent, received and evaluated in this form.

The information 35 , which is the second communication device 19 may affect z. B. whose current position, z. In relation to a landmark (city, street, river, bridge, landmark, highway exit), its current distance from the first communication device, its current speed in a fixed-earth coordinate system or its speed relative to the first communication device 12 include.

The information 36 that the second user 34 may relate to its name, at least one to the second user 34 associated character or associated with this image, icon or icon. To the first user 33 to point out that the second user 34 Approaching or removing or logging in or logging out of the social network controls the controller 4 the HUD 5 sometimes also such that z. B. a second user 34 associated icon or icon in an animation at least partially over the screen 11 of the HUD 5 is moved when the current distance between the first and the second communication device becomes larger or smaller than the predetermined distance or when the second user 34 Log in or log out of the social network.

In particular, the control unit controls 4 the HUD 5 using augmented reality technology. These are in an advantageous manner with the first camera 6 recorded image data with the second camera 7 recorded second image data, the first position data and the second position data fused. In the example shown here, they cover the projection screen 11 of the HUD 5 projectable further information 37 to elements for highlighting or highlighting in the field of view of the first user 33 located real object, in particular in the 3b and 3d dashed frame shown. A real object to mark the frame 37 on the projection screen 11 is projected into the 3a -D by the second car 2 given.

Here fuses the control unit 4 the first position data, the second position data and the first image data with the additional use of a corresponding image recognition software such that the second car 2 is identified as an object in or on which the second communication device 19 is carried. In particular, the current relative position between the communication bones 12 and 19 and the first image data compared and evaluated. As a result of the additional fusion with the first and the second position data, this identification can be carried out much easier, more reliable and faster than in the methods known from the prior art, which merely use methods of image recognition. By means of a on the control unit 4 executed software can therefore be determined based on the first position data, the second position data and the first image data that the second communication device 12 or the mitbewegte with this object, namely the second car 2 , in the field of vision of the driver of the car 1 located. In addition, the second image data can also be used, with the aid of z. B. an eye position of the driver can be determined.

This will be the second car 2 as a second user 34 assigned object identified. In the 3b and 3d marks the frame 37 one object each, namely the second car 2 associated with the communication device to which the information relates 35 and associated with the user to which the information relates 36 Respectively.

Depending on the constantly changing position of the second car 2 relative to the first car 1 becomes the HUD 5 through the control unit 4 so controlled that a position and shape of the frame 37 on the projection screen 11 continuously the line of sight of the user 33 on the car 2 is adjusted. The frame 37 is the car 2 So according to the line of sight of the first user 33 constantly updated. In particular, those with the second camera 7 recorded second image data for determining the eye position of the driver relative to the projection surface 11 and the relative position between the car 2 and the car 1 used.

So is in 3a a first line of sight 38 of the first user 33 on the second car 2 shown, in the first relative arrangement of the car 1 and 2 to each other. This one is different from one in 3c shown second viewing direction 39 of the first user 33 on the second car 2 at the second relative arrangement of the car 1 and 2 to each other. Accordingly, the show 3b and 3d that the frame 37 depending on the different directions of view 38 and 39 each at different positions 40 and 41 on the projection screen 11 is projected. According to the different distances between the cars 1 and 2 also becomes a size of the frame 37 a size of the car 2 in the field of vision of the first user 33 changed and adapted.

Finally, in the interior of the car 1 a gesture recognition device and / or a speech recognition device may be arranged, each for detecting z. B. are entered by the driver entered gestures or voice inputs. By means of gestures and / or voice input, the HUD 5 be controlled and / or the first communication device 12 to be served. On the HUD 5 displayed information can be combined with the voice inputs and / or with the entered gestures to drive the HUD 5 and / or for operating the first communication device 12 be combined. For example, the first user 33 sending a message to the second user 34 initiate by the first user 33 pointing to an icon on the screen 11 is projected and the second user 34 is assigned and makes corresponding voice input (eg "Send message").

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

• DE 102011113633 A1 [0003, 0003, 0004]

Claims (13)

Display system ( 100 ) for a vehicle, in particular for a car ( 1 ) or truck, comprising: a head-up display (HUD) ( 5 ); a first communication device ( 12 ) with a first position determination unit ( 14 ) and a receiving unit; and one with the HUD ( 5 ) and with the first communication device ( 12 ) connectable control unit ( 4 ) for driving the HUD ( 5 ); wherein the first position determination unit ( 14 ) is arranged to determine first position data which is a current position of the first communication device ( 12 ); wherein the receiving unit of the first communication device ( 12 ) is adapted to receive second position data which is a current position of at least one of the first communication device ( 12 ) various second communication device ( 19 ); and wherein the control unit ( 4 ), the HUD ( 5 ) based on the first position data and based on the second position data to drive. Display system ( 100 ) according to claim 1, characterized in that the control unit ( 4 ) is set up, based on the first position data and the second position data, a current distance between the first communication device ( 12 ) and the second communication device ( 19 ) and the HUD ( 5 ) only for playback of the second communication device ( 19 ) ( 35 ) and / or only for replay by a second user ( 34 ) of the second communication device ( 19 ) ( 36 ) and / or only for the reproduction of further information ( 37 ), if the actual distance between the first and the second communication device ( 19 ) is smaller than a predetermined distance. Display system ( 100 ) according to claim 1 or 2, characterized by at least one of the first communication device ( 12 ) different second communication device ( 19 ) each having a second position determination unit ( 20 ) and each having a transmitting unit, wherein the second position determining unit ( 20 ) is in each case set up to determine second position data which is a current position of the respective second communication device ( 19 ), and wherein the transmitting unit of the second communication device ( 19 ) is arranged in each case to send the second position data. Display system ( 100 ) according to one of the preceding claims, characterized in that the first communication device ( 12 ) is arranged to be connected via a first data connection to a social network, - wherein the social network, in particular a computer system ( 3 ) of the social network is set up, the second position data only via the first data connection to the first communication device ( 12 ) and / or - the first communication device ( 12 ) is arranged to receive the second position data over the first data connection only if a first user ( 33 ) of the social network is registered with the social network via the first data connection. Display system ( 100 ) according to claim 3 or 4, characterized in that the second communication device ( 19 ) is arranged to be connected to the social network via a second data connection and to send the second position data via the second data connection to the social network only if a second user ( 34 ) of the social network is registered with the social network via the second data connection. Display system ( 100 ) according to claim 5, characterized in that - the control unit ( 4 ), the HUD ( 5 ) only for displaying the second communication device ( 19 ) ( 35 ) and / or only to display a user ( 34 ) of the second communication device ( 19 ) ( 36 ) and / or only to display further information ( 37 ) and / or - the social network, in particular a computer system ( 3 ) of the social network is set up, the second position data only to the first communication device ( 12 ) and / or - that the first communication device ( 12 ) is arranged to receive the second position data only if the second user ( 34 ) of the social network of at least one of the first users ( 33 ) belongs to the social network determinable subset of all users of the social network. Display system ( 100 ) according to one of the preceding claims, characterized by a with the control unit ( 4 ) connectable image recording device, in particular a camera ( 6 ), the control unit ( 4 ), the HUD ( 5 ) based on image data captured by the image capture device, and / or characterized by one with the control unit ( 4 ) connectable locating device, in particular a radar device, wherein the control unit ( 4 ), the HUD ( 5 ) based on tracking detected by the location device location data. Display system ( 100 ) according to one of the preceding claims, characterized in that the control unit ( 4 ), the HUD ( 5 ) using augmented reality technology. Display system ( 100 ) according to claims 7 and 8, characterized in that the control unit ( 4 ) is arranged to determine based on the first position data and the second position data and / or based on the image data and / or based on the location data, that the second communication device ( 12 ) within a field of view of a driver of the vehicle, and the HUD ( 5 ) in this case such that a position of the second communication device ( 19 ) ( 35 ) and / or by a user ( 34 ) of the second communication device ( 19 ) ( 36 ) and / or further information ( 37 ) on a projection surface ( 11 ) of the HUD ( 5 ) at least partially dependent on a line of sight ( 38 . 39 ) of the driver on the second communication device ( 19 ) and / or that a position of the second communication device ( 19 ) ( 35 ) and / or a position of the user ( 34 ) of the second communication device ( 19 ) ( 36 ) and / or a position of further information ( 37 ) on the projection surface ( 11 ) of the HUD ( 5 ) at least partially dependent on a line of sight ( 38 . 39 ) of the driver on an object in or on which the second communication device ( 19 ) is arranged and / or with which the second communication device ( 19 ) is moved. Display system ( 100 ) according to one of claims 3 to 9, characterized in that the first communication device ( 12 ), the second communication device ( 19 ) and the control unit ( 4 ), determining the first position data, determining the second position data, sending the second position data, receiving the second position data, and driving the HUD ( 5 ), preferably with a frequency of at least 1 Hz, of at least 5 Hz, of at least 10 Hz or of at least 20 Hz. Display system ( 100 ) according to one of the preceding claims, characterized in that the control unit ( 4 ), the HUD ( 5 ) depending on a speed of the first communication device ( 12 ) and / or depending on one by means of the first communication device ( 12 ) to receive receivable danger message. Display system ( 100 ) according to claims 2, 4 and 5, characterized in that the control unit ( 4 ), the HUD ( 5 ) in such a way that information ( 35 ), which is the second communication device ( 19 ), and / or information ( 36 ), which is a user ( 34 ) of the second communication device ( 19 ), and / or other information ( 37 ) at least partially over the projection surface ( 11 ) of the HUD ( 5 ) are moved when the actual distance between the first and the second communication device ( 19 ) falls below the predetermined distance after the current distance was previously greater than the predetermined distance, and / or if the user ( 34 ) of the second communication device ( 19 ) logs in to the social network. Method for controlling a head-up display (HUD) ( 5 ) for a vehicle, in particular for a car ( 1 ) or truck, comprising the steps of: determining first position data representing a current position of a first communication device ( 12 ), by means of a position determination unit of the first communication device ( 12 ); Determining second position data representing a current position of one of the first communication device ( 12 ) various second communication device ( 19 ), by means of a position determination unit of the second communication device ( 19 ); Transmitting the second position data to the first communication device ( 12 ); Driving the HUD ( 5 ) for displaying information by means of a display with the first communication device ( 12 ) and with the HUD ( 5 ) connected control unit ( 4 ) based on the first position data and the second position data.

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