DE102019209812B4 - Control of a display unit in a motor vehicle - Google Patents

Abstract

Processor unit (10) for controlling a display unit (3) in a motor vehicle (1), the processor unit (10) being set up to include a display unit (3) which is rigidly arranged on the motor vehicle (1) in the vertical direction (y) so that an occupant (14) of the motor vehicle (1) can look at them with his eyes (15) in such a way that the image content displayed on the display unit (3) in the vertical direction (y) of a vertical movement of the eyes (15) of the Occupants (14) follow synchronously, with an acceleration (a) of the motor vehicle (1) in the vertical direction (y) leading to an acceleration of the occupant (14) in the vertical direction (y), the processor unit (10) deflecting (A2 (t)) of the eyes (15) of the occupant (14) at a point in time (t) according to the formula A2 (t) = y ^ 2 ∗ e − δ2t ∗ cos (ω2t + φ) δ2 = ω2 ∗ Dmit deflection ( A2 (t)) head at the time (t), amplitude (ŷ2) deflection head, decay constant (δ2) deflection head, undamped natural angular frequency (ω2) Ausl Reduction head, degree of damping (D) and phase difference (φ) of the oscillation and a deflection (A1) of the motor vehicle (1) and the display unit (3) at a point in time (t) according to the formula A1 (t) = y ^ 1 ∗ e− δ1t ∗ cos (ω1t + φ) δ1 = ω1 ∗ Dmit amplitude (ŷ1) deflection motor vehicle (1) and display unit (3), decay constant (δ1) deflection motor vehicle (1) and display unit (3), undamped natural angular frequency (ω1) deflection motor vehicle (1) and display unit (3), degree of damping (D) and phase difference (φ) of the vibration are calculated.

Description

The invention relates to the control of a display unit in a motor vehicle. In this context, what is claimed is, in particular, a processor unit, a system, a computer program product and a method for controlling a display unit in a motor vehicle.

In the interior of a motor vehicle there can be display units or screens on which content can be displayed, e.g. characters, images, videos or other types of information. The image content is used for information and / or entertainment purposes, which is why corresponding display systems are also called infotainment systems. The screens can be located, for example, in a center console of the vehicle so that, for example, a driver or a passenger of the motor vehicle can view the content on the screen with their eyes. At high speeds and at the same time on uneven roads, the images displayed on the screen (a fluid image) are less “comfortable” because the driver himself is shaken by the unevenness in the seat at the frequency and amplitude generated by the vehicle. In the case of vehicles with strong suspension, e.g. sports SUVs, the effect is additionally reinforced. There is thus a relative movement between the driver's head on the one hand and the screen on the other hand.

the DE 10 2017 223 609 A1 discloses a system for reducing kinetosis symptoms for a vehicle, the system having a control unit which is coupled to a sensor system and / or a navigation system, a vehicle seating system and / or a display unit for receiving and / or transmitting signals. The control unit is set up to generate seat adjustment signals and / or display signals as a function of received environmental data and / or vehicle component data.

From the DE 10 2007 044 535 A1 an interior mirror is known which can display an environmental section at a point on the mirror surface that corresponds to the position of the environmental section with respect to the motor vehicle. The surrounding area can be realized using a TFT display. The environmental section can be shifted in the horizontal direction and in the vertical direction within the interior mirror. For example, a position of the environmental section to the right behind the motor vehicle can be expressed in an arrangement of the environmental section at the bottom right within the interior mirror.

Further prior art that forms the background to the present invention is provided by US Pat DE 10 2015 208 738 A1 , DE 10 2016 102 808 A1 as well as through the DE 103 36 329 A1 educated.

An object of the present invention can be seen in providing a pleasant image for the viewer of a screen in a motor vehicle, even when the motor vehicle is traveling at high speeds on an uneven road surface.

The object is achieved by the subjects of the independent claims. Advantageous embodiments are the subject of the dependent claims, the following description and the figures.

To solve this problem, the present invention proposes in particular an arrangement or a device and a method for improving the perception of infotainment displays. In particular, a dynamic image or a dynamic display is proposed, which can be seen on a screen, for example in a center console, and is characterized by a better perception of the images for the viewer. The present invention makes use of empirically obtained knowledge that the observation of images while stationary and / or while driving on a high-quality and level road, in particular on a motorway, significantly improves the subjective perception by a vehicle occupant.

In order to improve comfort in terms of perception of the fluid image displayed, for example, on a display unit arranged in the center console, it is proposed that the moving image be synchronized with the movement of the driver in the vertical direction. Although the screen size is limited and the size of the image displayed on the surface is fully utilized, the solution can still be implemented. Information in the image is lost for a moment, as a fraction of the upper image (when shifting upwards) or the lower image (when shifting downwards) is shifted outside the displayable image area. However, in relation to the stored route and vibrations, this restriction is negligible. The perception of moving images in the center console, e.g. B. in night vision (short: NIVI, a camera-based night vision system), can be increased by the underlying arrangement and process. The inventor was unable to determine an accommodation of the eyes between looking outwards through the windshield and looking at the instrument panel with the display unit.

With vertical movement, it is basically only the spine that does the vertical forces compensated. The movements in this direction are much more abrupt (compared to a horizontal movement, in particular across a direction of travel of the motor vehicle) and have a significantly smaller amplitude, which also makes it difficult to perceive the image.

The solution comprises the disciplines of mechanics, hardware and software. It can be assumed that all vehicles equipped with NIVI technology are equipped with the necessary hardware and mechanics. The implementation of the solution proposed hereby at automobile manufacturers only requires the integration of the software provided with this invention (cf. the computer program product described in more detail below). It can also be assumed that in future the display of image content from the NIVI system and other information will be relocated from the center console to the instrument cluster. It is proposed that this information should also be presented in the manner on which it is based, or that it should also be used in permanently installed screens for the occupants in the rear.

In this sense, a processor unit is provided according to a first aspect of the invention. The processor unit is, in particular, a graphics processor unit (GPU). The processor unit is set up to control a display unit which is arranged in the vertical direction, in particular rigidly on a motor vehicle, in particular in an interior of the motor vehicle, so that an occupant of the motor vehicle can look at it with his eyes. The processor unit is set up to control the display unit in such a way that image contents displayed on the display unit follow a vertical movement of the occupant's eyes, in particular synchronously. The synchronous feature can in particular be understood to mean that when the motor vehicle and the display unit are deflected upwards / downwards, the image contents are shifted upwards / downwards accordingly. It can be assumed here that an acceleration of the motor vehicle in the vertical direction leads to an acceleration of the occupant in the vertical direction. The processor unit is thus set up to shift image content displayed on the display unit in a vertical direction in such a way that there is no relative movement between the head and the displayed image content or that this relative movement is at least minimized.

According to a second aspect of the invention, a system for controlling a display unit in a motor vehicle is proposed. The system comprises an acceleration sensor and a processor unit, in particular a processor unit according to the first aspect of the invention. The acceleration sensor is designed to determine a vertical acceleration of the motor vehicle and thus also a vertical acceleration of a display unit which is rigidly arranged in the vertical direction on a motor vehicle, in particular in an interior of the motor vehicle, so that an occupant of the motor vehicle can see it with his eyes can look at. The processor unit is set up to use an interface to access the acceleration of the display unit determined by the acceleration sensor and to control the display unit in such a way that image contents displayed on the display unit follow a vertical movement of the occupant's eyes, in particular synchronously, with the Acceleration of the motor vehicle in the vertical direction leads to an acceleration of the occupant in the vertical direction.

A vehicle is also within the scope of the invention. The vehicle can comprise a processor unit according to the first aspect of the invention. Furthermore, the vehicle can comprise a system according to the second aspect of the invention.

According to a third aspect of the invention, a method for controlling a display unit in a motor vehicle is proposed. The method includes determining a vertical acceleration of the motor vehicle and thus also a vertical acceleration of a display unit by means of an acceleration sensor of the motor vehicle, the display unit being arranged rigidly in the vertical direction on a motor vehicle, in particular in an interior of the motor vehicle, so that an occupant of the motor vehicle can see them with his eyes. Furthermore, the acceleration of the display unit determined by the acceleration sensor is accessed by means of an interface of a processor unit and the display unit is controlled by means of the processor unit in such a way that image content displayed on the display unit in the vertical direction follows a vertical movement of the occupant's eyes, in particular synchronously, with an acceleration of the motor vehicle in the vertical direction leads to an acceleration of the occupant in the vertical direction.

• - mittels einer Schnittstelle der Prozessoreinheit auf eine von einem Beschleunigungssensor ermittelte Beschleunigung des Kraftfahrzeugs zuzugreifen,
• - basierend auf der Beschleunigung des Kraftfahrzeugs eine Beschleunigung einer Anzeigeeinheit zu ermitteln, die in vertikaler Richtung starr an einem Kraftfahrzeug, insbesondere in einem Innenraum des Kraftfahrzeugs, angeordnet ist, sodass ein Insasse des Kraftfahrzeugs sie mit seinen Augen betrachten kann, wobei die Beschleunigung der Anzeigeeinheit insbesondere der Beschleunigung des Kraftfahrzeugs gleichgesetzt wird, und
• - mittels der Schnittstelle die Anzeigeeinheit derart zu steuern, dass auf der Anzeigeeinheit angezeigte Bildinhalte in vertikaler Richtung einer vertikalen Bewegung der Augen des Insassen insbesondere synchron folgen, wobei eine Beschleunigung des Kraftfahrzeugs in der vertikalen Richtung zu einer Beschleunigung des Insassen in der vertikalen Richtung führt.

According to a fourth aspect of the invention, a computer program product for controlling a display unit in a motor vehicle is proposed. The computer program, when it is executed on a processor unit, instructs the processor unit,

• - to access an acceleration of the motor vehicle determined by an acceleration sensor by means of an interface of the processor unit,
• - to determine an acceleration of a display unit based on the acceleration of the motor vehicle, which is arranged rigidly in the vertical direction on a motor vehicle, in particular in an interior of the motor vehicle, so that an occupant of the motor vehicle can look at it with his eyes, the acceleration of the display unit in particular the acceleration of the motor vehicle is equated, and
• Control the display unit by means of the interface in such a way that image content displayed on the display unit in the vertical direction follows a vertical movement of the occupant's eyes, in particular synchronously, with an acceleration of the motor vehicle in the vertical direction leading to an acceleration of the occupant in the vertical direction.

$${\delta }_2={\omega }_2\ast D$$

und $$A_1\left(t\right)={\widehat{y}}_1\ast e^{-{\mathrm{\delta }}_{1}t}\ast \text{cos}\left({\mathrm{\omega }}_{1}t+\phi \right)$$

$${\delta }_1={\omega }_1\ast D$$

berechnet mit einer Amplitude Auslenkung Kopf, Abklingkonstante Auslenkung Kopf, ungedämpfte Eigenkreisfrequenz Auslenkung Kopf, Dämpfungsgrad und Phasendifferenz der Schwingung und mit Amplitude Auslenkung Kraftfahrzeug und Anzeigeeinheit, Abklingkonstante Auslenkung Kraftfahrzeug und Anzeigeeinheit, ungedämpfte Eigenkreisfrequenz Auslenkung Kraftfahrzeug und Anzeigeeinheit, Dämpfungsgrad und Phasendifferenz der Schwingung.In the respective aspects of the invention, a vertical deflection of the motor vehicle and a vertical deflection of the occupant's eyes are carried out by the processor unit according to the formulas $${\mathrm{A.}}_2\left(t\right)={\widehat{y}}_2\ast e^{-{\mathrm{\delta }}_{2}t}\ast \text{cos}\left({\mathrm{\omega }}_{2}t+\phi \right)$$

$${\mathrm{<figure-callout\; id="2"\; label="\delta "\; filenames="DE102019209812B4\_0029.png,DE102019209812B4\_0030.png"\; state="\{\{state\}\}">\delta </figure-callout>}}_2={\mathrm{<figure-callout\; id="2"\; label="\omega "\; filenames="DE102019209812B4\_0029.png,DE102019209812B4\_0030.png"\; state="\{\{state\}\}">\omega </figure-callout>}}_2\ast \mathrm{D.}$$

and $${\mathrm{A.}}_1\left(t\right)={\widehat{y}}_1\ast e^{-{\mathrm{\delta }}_{1}t}\ast \text{cos}\left({\mathrm{\omega }}_{1}t+\phi \right)$$

$${\mathrm{<figure-callout\; id="1"\; label="\delta "\; filenames="DE102019209812B4\_0029.png,DE102019209812B4\_0030.png"\; state="\{\{state\}\}">\delta </figure-callout>}}_1={\mathrm{<figure-callout\; id="1"\; label="\omega "\; filenames="DE102019209812B4\_0029.png,DE102019209812B4\_0030.png"\; state="\{\{state\}\}">\omega </figure-callout>}}_1\ast \mathrm{D.}$$

calculated with an amplitude deflection head, decay constant deflection head, undamped natural angular frequency deflection head, degree of damping and phase difference of the oscillation and with amplitude deflection motor vehicle and display unit, decay constant deflection motor vehicle and display unit, undamped natural angular frequency deflection motor vehicle and display unit, degree of damping and phase difference.

The following statements apply equally to the processor unit according to the first aspect of the invention, for the system according to the second aspect of the invention, for the vehicle according to the scope of the invention, for the method according to the third aspect of the invention and for the computer program product according to the fourth aspect the invention.

The processor unit can comprise an interface. The interface is in particular a communication interface which enables the exchange of data, specifically an exchange of data in particular between the processor unit on the one hand and the acceleration sensor and / or the display unit on the other hand. In one embodiment, the processor unit is set up to access a vehicle acceleration data record by means of the interface, the vehicle acceleration data record containing information on the vertical acceleration of the motor vehicle and thus also the display unit, which is rigidly connected to the motor vehicle. Furthermore, the processor unit can be set up to calculate occupant acceleration data, the occupant acceleration data containing information on a vertical acceleration of the occupant, in particular the occupant's eyes. Furthermore, the processor unit can be configured to control the display unit based on the vehicle acceleration data and on the occupant acceleration data in such a way that image content displayed on the display unit follows a vertical movement of the occupant's eyes, in particular synchronously.

In this context, the processor unit can in particular be set up to calculate a deflection difference between a vertical deflection of the motor vehicle and a vertical deflection of the occupant's eyes based on the vehicle acceleration data and the occupant acceleration data, and the display unit based on the deflection -To control the difference in such a way that image content displayed on the display unit in the vertical direction follows a vertical movement of the occupant's eyes, in particular synchronously.

The vehicle acceleration data can be determined by the acceleration sensor of the motor vehicle, the processor unit being set up to access the vehicle acceleration data determined by the acceleration sensor by means of the interface. An acceleration sensor that is typically built into a motor vehicle in any case can be used, which means that additional components can be dispensed with.

Lateral dynamic forces can optionally be balanced as well as vertical forces. However, this is not absolutely necessary, since the driver's body only accepts the vertical movement, i.e. in particular the suspension travel of the vehicle. Lateral movements are compensated for by the buttocks, upper body, neck and head. In this sense, in a further embodiment, the processor unit can be set up to display the display unit, which is rigidly attached to the motor vehicle, in particular in the vehicle, in a horizontal direction transverse to the direction of travel of the vehicle Interior of the motor vehicle, is arranged to be controlled such that image content displayed on the display unit in the horizontal direction transverse to the direction of travel of the vehicle follow a corresponding lateral movement of the occupant's eyes, in particular synchronously.

The display unit can be arranged in a center console or in an instrument cluster or in a rear of the motor vehicle. Furthermore, the display unit can be arranged in a rearview mirror of the motor vehicle. An actual mirror can be dispensed with in this embodiment. The display unit can partially or completely replace the mirror. The rearview mirror can be located in the interior of the motor vehicle where a rearview mirror is typically positioned, in particular in the upper area of the windshield and laterally between a driver's side and a passenger's side. Furthermore, the rearview mirror can be arranged on the driver's side and on the passenger side outside the interior. A plurality of display units can also be arranged in the interior and outside the interior of the motor vehicle, in particular at the positions listed above. The display unit can in particular display image content from a night vision system.

• 1 eine Seitenansicht eines Kraftfahrzeugs mit einem Bildschirm,
• 2 einen zeitlichen Verlauf einer Auslenkung des Bildschirms und einer Person, die sich in dem Kraftfahrzeug nach 1 befindet, wobei das Kraftfahrzeug bzw. der Bildschirm und die Person eine gleiche Federcharakteristik und eine gleiche Dämpfungscharakteristik aufweisen, und
• 3 einen zeitlichen Verlauf einer Auslenkung des Bildschirms und einer Person, die sich in dem Kraftfahrzeug nach 1 befindet, wobei der Bildschirm und die Person eine unterschiedliche Federcharakteristik und eine unterschiedliche Dämpfungscharakteristik aufweisen.

In the following, exemplary embodiments of the invention are explained in more detail with reference to the schematic drawing, the same or similar elements being provided with the same reference numerals. Here shows

• 1 a side view of a motor vehicle with a screen,
• 2 a time profile of a deflection of the screen and a person who is in the motor vehicle 1 is located, the motor vehicle or the screen and the person having the same spring characteristic and the same damping characteristic, and
• 3 a time profile of a deflection of the screen and a person who is in the motor vehicle 1 is located, wherein the screen and the person have a different spring characteristic and a different damping characteristic.

1 shows a motor vehicle 1 . In an interior 2 of the motor vehicle 1 is a display unit in the form of a screen 3 arranged. In the embodiment according to 1 is the screen 3 in an instrument cluster or in a center console 4th of the motor vehicle 1 arranged. However, this is purely exemplary. The screen 3 can alternatively also, for example, in a rearview mirror or in a vehicle seat 5 (Driver's seat or front passenger seat) be arranged, in particular in the rear area of a headrest 6th a backrest 7th of the vehicle site 5 so that occupants of a back seat of the vehicle 1 from image content that can be viewed on the screen 3 are displayed.

The car 1 includes a system 8th to control the screen 3 . The system 8th comprises in the example shown hardware in the form of an acceleration sensor 9 , a processor unit 10 , a communication interface 11 and a storage unit 12th and software in the form of a computer program product 13th . At the processor unit 10 it can in particular be a graphics processor unit (in English: Graphics Processing Unit or GPU for short). The computer program product 13th can be on the storage unit 12th be saved. The processing unit 10 can by means of the communication interface 11 on the storage unit 12th and to the computer program product stored thereon 13th access, so that the computer program product 13th on the processor unit 10 can be carried out in order to carry out the method steps described below or to ensure the functionalities described below.

On the screen 3 image content can be displayed. The screen 3 can in particular visually display the content of an infotainment system. For example, characters (letters, numbers or symbols and special characters) can be displayed. Furthermore, for example, pictograms, maps and route guidance of a navigation system, simulations, images or videos (image sequences) of a camera system of the motor vehicle 1 being represented. The images or videos can be, for example, images or videos from a night vision system (also known as night vision in English).

When the motor vehicle 1 is driven on a rough road in a horizontal direction x, particularly at high speed, then the automobile 1 due to corresponding bumps in the road to an oscillation in a vertical direction y of the motor vehicle 1 stimulated. In particular, a chassis and a body (which make up the interior 2 of the motor vehicle 1 forms) of the motor vehicle 1 excited to vibrate in the vertical direction y. The vibration of the motor vehicle 1 in the vertical direction y can be with a suspension and with a damping of the motor vehicle 1 be counteracted.

The screen 3 can be rigid within the interior 2 of the motor vehicle 1 be attached. In particular, the screen 3 in the vertical direction y rigidly within the interior space 2 of the motor vehicle 1 be attached. Furthermore, the screen 3 also in the horizontal direction x and in a lateral direction transverse to the horizontal direction x rigidly within the interior space 2 of the motor vehicle 1 be attached. In the embodiment shown, the screen is 3 rigid in all directions on the center console 4th attached. When the motor vehicle 1 is excited to vibrate in the vertical direction y, then it can be assumed that the rigid with the motor vehicle 1 connected screen 3 is also excited to an oscillation in the vertical direction y, in particular to the same oscillation as the motor vehicle 1 . A counterexample would be the liquid images displayed on a screen in the vehicle 1 is attached and takes up the vehicle movement by a less rigid mounting manner, the effects described above hardly appearing.

$${\delta }_1={\omega }_1\ast D$$

Through the suspension and damping of the motor vehicle 1 it is a damped oscillation in the vertical direction y. A deflection A ₁ of the vehicle 1 and the screen 3 at a point in time t can be calculated according to general laws of a damped oscillation as follows: $${\mathrm{A.}}_1\left(t\right)={\widehat{y}}_1\ast e^{-{\mathrm{\delta }}_{1}t}\ast \text{cos}\left({\mathrm{\omega }}_{1}t+\phi \right)$$

$${\mathrm{<figure-callout\; id="1"\; label="\delta "\; filenames="DE102019209812B4\_0029.png,DE102019209812B4\_0030.png"\; state="\{\{state\}\}">\delta </figure-callout>}}_1={\mathrm{<figure-callout\; id="1"\; label="\omega "\; filenames="DE102019209812B4\_0029.png,DE102019209812B4\_0030.png"\; state="\{\{state\}\}">\omega </figure-callout>}}_1\ast \mathrm{D.}$$

A1(t)

Auslenkung Fahrzeug und Bildschirm zum Zeitpunkt t

ŷ1

Amplitude Auslenkung Fahrzeug und Bildschirm

e

Eulersche Zahl

δ1

Abklingkonstante Auslenkung Fahrzeug und Bildschirm

ω1

ungedämpfte Eigenkreisfrequenz Auslenkung Fahrzeug und Bildschirm

D

Dämpfungsgrad

φ

Phasendifferenz der Schwingung

Here are:

A1 (t)

Deflection of vehicle and screen at time t

ŷ1

Amplitude deflection vehicle and screen

e

Euler's number

δ1

Decay constant deflection vehicle and screen

ω1

Undamped natural angular frequency deflection vehicle and screen

D.

Degree of damping

φ

Phase difference of the oscillation

The accelerometer 9 measures an acceleration a of the motor vehicle 1 in the vertical direction y at time t. In particular, the acceleration sensor measures 9 an acceleration a of the motor vehicle 1 in the vertical direction y at several successive times. Via the communication interface 11 can the processor unit 10 access the measured acceleration a, which can be combined, for example, together with time t in a vehicle acceleration data set. The processing unit 10 can based on the acceleration a of the motor vehicle 1 the deflection in the vertical direction y at time t A ₁ of the vehicle 1 and the screen 3 compute at time t. The computer program product 13th appropriate instructions included.

In the exemplary embodiment shown, there is an occupant 14th on a vehicle seat 5 of the motor vehicle. For example, the occupant 14th in a driver's seat 5 sit and the motor vehicle 1 steer. With his eyes 15th can the inmate 14th Image content on the screen 3 regard.

When the motor vehicle 1 swings in the vertical direction y, then the occupant can too 14th and especially his head 16 with his eyes 15th be excited to an oscillation in the vertical direction y. This vibration of the eyes 15th of the inmate 14th in particular, in the vertical direction y is different from the vibration of the motor vehicle 1 and the screen 3 in the vertical direction y. The vibration of the eyes 15th of the inmate 14th in the vertical direction y can be damped, for example by the vehicle seat 5 .

$${\delta }_2={\omega }_2\ast D$$

A2(t)

Auslenkung Kopf zum Zeitpunkt t

ŷ2

Amplitude Auslenkung Kopf

e

Eulersche Zahl

δ2

Abklingkonstante Auslenkung Kopf

ω2

ungedämpfte Eigenkreisfrequenz Auslenkung Kopf

D

Dämpfungsgrad

φ

Phasendifferenz der Schwingung

A deflection A _{s of} the eyes 15th of the inmate 14th at a point in time t can be calculated according to general laws of a damped oscillation as follows: $${\mathrm{A.}}_2\left(t\right)={\widehat{y}}_2\ast e^{-{\delta }_{2}t}\ast \text{cos}\left({\omega }_{2}t+\phi \right)$$

$${\mathrm{<figure-callout\; id="2"\; label="\delta "\; filenames="DE102019209812B4\_0029.png,DE102019209812B4\_0030.png"\; state="\{\{state\}\}">\delta </figure-callout>}}_2={\mathrm{<figure-callout\; id="2"\; label="\omega "\; filenames="DE102019209812B4\_0029.png,DE102019209812B4\_0030.png"\; state="\{\{state\}\}">\omega </figure-callout>}}_2\ast \mathrm{D.}$$

A2 (t)

Head deflection at time t

ŷ2

Amplitude deflection head

e

Euler's number

δ2

Decay constant deflection head

ω2

undamped natural angular frequency deflection head

D.

Degree of damping

φ

Phase difference of the oscillation

There is thus a deflection difference at a point in time t ΔA between the deflection A ₁ Of the screen 3 and the deflection A ₂ of the eyes 15th of the inmate 14th .

The processing unit 10 controls the screen 3 via the communication interface 11 . The processing unit 10 controls the screen 3 such that the on the screen 3 displayed image content in the vertical direction y of the vertical movement of the eyes 15th of the inmate 14th follow synchronously. The processing unit 10 this enables that on the screen 3 to move the displayed image content in such a way in the vertical direction y that there is no relative movement between the eyes 15th and the displayed image content exists or that this relative movement is at least minimized.

In this context shows 2 the temporal course of the deflection A ₁ of the vehicle 1 and the screen 3 in the event of vertical vibration excitation by driving the motor vehicle 1 on the rough road. The deflection over time is also shown A ₂ of the eyes 15th of the inmate 14th shown. In that through 2 The example shown has the same spring characteristic and the same damping characteristic with regard to the vibrations of the screen 3 and eyes 14th before. The deflection of both the screen is at common phase angles T / 2 (half oscillation period) and T (full oscillation period) as well as multiples of the two phase angles 3 as well as the eyes 15th occupant zero (zero crossing). The processing unit 10 can the screen 3 control so that the on the screen 3 displayed image content in the vertical direction y at each point in time t or at discrete points in time t by the negative deflection difference -ΔA between the deflection A ₁ Of the screen 3 and the deflection A ₂ of the eyes 15th of the inmate 14th be moved. This way the relative movement between the eyes 15th and the displayed image content is minimized. The expression of the negative deflection difference -ΔA can be done by the user, for example the occupant 14th , in a range from zero to the absolute value of the negative deflection difference -ΔA can be individually set to meet your own needs. The system can do this 8th to control the display unit 3 for example a corresponding input unit in the interior 2 of the vehicle 1 exhibit.

3 shows an alternative time course of the deflection A ₁ of the vehicle 1 , Of the screen 3 in the event of vertical vibration excitation by driving the motor vehicle 1 on the rough road. The deflection over time is also shown A ₂ of the eyes 15th of the inmate 14th shown. In addition, the sum A ₁ + A _{2 is} the deflections of the screen 3 and eyes 15th shown. In that through 3 The example shown has a different spring characteristic and a different damping characteristic with regard to the vibrations of the screen 3 and eyes 14th before. The processing unit 10 controls the screen 3 such that the on the screen 3 displayed image content in the vertical direction y at each point in time t or at discrete points in time t by the negative deflection difference -ΔA between the deflection A ₁ Of the screen 3 and the deflection A ₂ of the eyes 15th of the inmate 14th be moved. The expression of the negative deflection difference -ΔA can be done by the user, for example the occupant 14th , in a range from zero to the absolute value of the negative deflection difference -ΔA can be individually set to meet your own needs. The system can do this 8th to control the display unit 3 for example a corresponding input unit in the interior 2 of the vehicle 1 exhibit. The displacement difference ΔA can be found in the example 3 according to A ₂ - A ₁ to calculate. This allows the relative movement between the eyes 15th and the displayed image content can be minimized.

List of reference symbols

A1

Deflection of the vehicle and screen

A2

Deflection of the occupant's eyes

ΔA

Displacement difference between A ₁ and A ₂

1

Motor vehicle

2

inner space

3

Display unit (screen)

4th

Center console / instrument cluster

5

Vehicle seat

6th

headrest

7th

backrest

8th

System for controlling the display unit

9

Accelerometer

10

Processor unit

11

Communication interface

12th

Storage unit

13th

Computer program product

14th

inmate

15th

Eye of the inmate

16

Inmate's head

Claims (10)

Processor unit (10) for controlling a display unit (3) in a motor vehicle (1), the processor unit (10) being set up to include a display unit (3) which is rigidly arranged on the motor vehicle (1) in the vertical direction (y) so that an occupant (14) of the motor vehicle (1) can look at them with his eyes (15) in such a way that the image content displayed on the display unit (3) in the vertical direction (y) of a vertical movement of the eyes (15) of the Occupants (14) follow synchronously, with an acceleration (a) of the motor vehicle (1) in the vertical direction (y) leading to an acceleration of the occupant (14) in the vertical direction (y), wherein the processor unit (10) a deflection (A ₂ (t)) of the eyes (15) of the occupant (14) at a point in time (t) according to the formula $${\mathrm{A.}}_2\left(t\right)={\widehat{y}}_2\ast e^{-{\mathrm{\delta }}_{2}t}\ast \text{cos}\left({\mathrm{\omega }}_{2}t+\phi \right)$$

$${\delta }_2={\omega }_2\ast \mathrm{D.}$$

with deflection (A ₂ (t)) head at the time (t), amplitude (ŷ ₂ ) deflection head, decay constant (δ ₂ ) deflection head, undamped natural angular frequency (ω ₂ ) deflection head, degree of damping (D) and phase difference (φ ) the oscillation and a deflection (A ₁ ) of the motor vehicle (1) and the display unit (3) at a point in time (t) according to the formula $${\mathrm{A.}}_1\left(t\right)={\widehat{y}}_1\ast e^{-{\mathrm{\delta }}_{1}t}\ast \text{cos}\left({\mathrm{\omega }}_{1}t+\phi \right)$$

$${\delta }_1={\omega }_1\ast \mathrm{D.}$$

with amplitude (ŷ ₁ ) deflection motor vehicle (1) and display unit (3), decay constant (δ ₁ ) deflection motor vehicle (1) and display unit (3), undamped natural angular frequency (ω ₁ ) deflection motor vehicle (1) and display unit (3), Damping degree (D) and phase difference (φ) of the oscillation are calculated. Processor unit (10) Claim 1 The processor unit (10) comprising an interface (11), wherein the processor unit (10) is set up to - access a vehicle acceleration data set by means of the interface (11), the vehicle acceleration data set providing information on the vertical acceleration (a) of the motor vehicle (1) and thus also the display unit (3), which is rigidly connected to the motor vehicle (1), - to calculate occupant acceleration data, the occupant acceleration data providing information on a vertical acceleration of the occupant's eyes (15) (14), and - to control the display unit (3) based on the vehicle acceleration data and on the occupant acceleration data in such a way that image contents displayed on the display unit (3) in the vertical direction (y) of a vertical movement of the eyes (15 ) of the occupant (14) follow synchronously. Processor unit (10) Claim 2 , the processor unit (10) being set up to - based on the vehicle acceleration data and the occupant acceleration data, a deflection difference (ΔA) between the vertical deflection (A ₁ ) of the motor vehicle and the vertical deflection (A ₂ ) of the eyes (15) of the occupant (14) to calculate, and - to control the display unit (3) based on the deflection difference (ΔA) in such a way that the image content displayed on the display unit (3) in the vertical direction (y) corresponds to a vertical movement of the The eyes (15) of the occupant (14) follow synchronously. Processor unit (10) Claim 2 or 3 , the vehicle acceleration data being determined by an acceleration sensor (9) of the motor vehicle (1) and the processor unit (10) being set up to use the interface (11) to access the vehicle determined by the acceleration sensor (9) -Access acceleration data. Processor unit (10) according to one of the preceding claims, wherein the processor unit (10) is set up to rigidly arrange the display unit (3) on the motor vehicle (1) in a horizontal direction transverse to the direction of travel (x) of the vehicle (1) is to be controlled in such a way that the image content displayed on the display unit (3) in the horizontal direction transverse to the direction of travel (x) of the vehicle (1) synchronously follows a corresponding lateral movement of the eyes (15) of the occupant (14). Processor unit (10) according to one of the preceding claims, wherein the display unit - in a center console (4) or - in an instrument cluster (4) or - in a fund (6) or - Is arranged in a rearview mirror of the motor vehicle (1). Processor unit (10) according to one of the preceding claims, wherein the display unit (3) displays image content of a night vision system. System (8) for controlling a display unit (3) in a motor vehicle (1), the system (8) comprising an acceleration sensor (9) and a processor unit (10), wherein - the acceleration sensor (9) is set up to provide a vertical acceleration (a) of the motor vehicle (1) and thus also a vertical acceleration (a) of a display unit (3) which is rigidly arranged in the vertical direction (y) on the motor vehicle (1) so that an occupant (14) of the motor vehicle (1) can look at it with his eyes (15), and - the processor unit (10) is set up to use an interface (11) to access the acceleration (a) of the display unit (3) determined by the acceleration sensor (9) and to control the display unit (3) in such a way that image contents displayed on the display unit (3) in the vertical direction (y) synchronously follow a vertical movement of the eyes (15) of the occupant (14), the acceleration (a) of the motor vehicle (1 ) in the vertical direction (y) leads to an acceleration of the occupant (14) in the vertical direction (y), the Processor unit (10) a vertical deflection (A ₁ ) of the motor vehicle (1) and a vertical deflection (A ₂ ) of the eyes (15) of the occupant (14) according to the formulas $${\mathrm{A.}}_2\left(t\right)={\widehat{y}}_2\ast e^{-{\mathrm{\delta }}_{2}t}\ast \text{cos}\left({\mathrm{\omega }}_{2}t+\phi \right)$$

$${\delta }_2={\omega }_2\ast \mathrm{D.}$$

and $${\mathrm{A.}}_1\left(t\right)={\widehat{y}}_1\ast e^{-{\mathrm{\delta }}_{1}t}\ast \text{cos}\left({\mathrm{\omega }}_{1}t+\phi \right)$$

$${\delta }_1={\omega }_1\ast \mathrm{D.}$$

calculated with amplitude (ŷ ₂ ) head deflection, decay constant (δ ₂ ) head deflection, undamped natural angular frequency (ω ₂ ) head deflection, degree of damping (D) and phase difference (φ) of the oscillation and with amplitude (ŷ ₁ ) vehicle deflection (1) and display unit (3), decay constant (δ ₁ ) deflection motor vehicle (1) and display unit (3), undamped natural angular frequency (ω ₁ ) deflection motor vehicle (1) and display unit (3), degree of damping (D) and phase difference (φ) of the oscillation . A method for controlling a display unit (3) in a motor vehicle (1), the method comprising the steps of: determining a vertical acceleration (a) of the motor vehicle (1) and thus also a vertical acceleration (a) of a display unit (3) by means of a Acceleration sensor (9) of the motor vehicle (1), the display unit (3) being arranged rigidly on the motor vehicle (1) in the vertical direction (y) so that an occupant (14) of the motor vehicle (1) can see it with his eyes (15) and - accessing the acceleration (a) of the display unit (3) determined by the acceleration sensor (9) by means of an interface (11) of a processor unit (10) and - controlling the display unit (3) by means of the processor unit (10) in this way that on the display unit (3) displayed image contents in the vertical direction (y) follow a vertical movement of the eyes (15) of the occupant (14) synchronously, with an acceleration (a) of the motor vehicle (1) in the vertical Direction (y) leads to an acceleration of the occupant (14) in the vertical direction (y), with a vertical deflection (A ₁ ) of the motor vehicle (1) and a vertical deflection (A ₂ ) of the eyes (15) of the occupant ( 14) from the processor unit (10) according to the formulas $${\mathrm{A.}}_2\left(t\right)={\widehat{y}}_2\ast e^{-{\mathrm{\delta }}_{2}t}\ast \text{cos}\left({\mathrm{\omega }}_{2}t+\phi \right)$$

$${\delta }_2={\omega }_2\ast \mathrm{D.}$$

and $${\mathrm{A.}}_1\left(t\right)={\widehat{y}}_1\ast e^{-{\mathrm{\delta }}_{1}t}\ast \text{cos}\left({\mathrm{\omega }}_{1}t+\phi \right)$$

$${\delta }_1={\omega }_1\ast \mathrm{D.}$$

are calculated with amplitude (ŷ ₂ ) head deflection, decay constant (δ ₂ ) head deflection, undamped natural angular frequency (ω ₂ ) head deflection, degree of damping (D) and phase difference (φ) of the oscillation and with amplitude (ŷ ₁ ) vehicle deflection (1 ) and display unit (3), decay constant (δ ₁ ) deflection motor vehicle (1) and display unit (3), undamped natural angular frequency (ω ₁ ) deflection motor vehicle (1) and display unit (3), degree of damping (D) and phase difference (φ) of the Vibration. Computer program product (13) for controlling a display unit (3) in a motor vehicle (1), wherein the computer program product (13), when it is executed on a processor unit (10), guides the processor unit (10), - by means of an interface (11) of the processor unit (10) to access an acceleration (a) of the motor vehicle (1) determined by an acceleration sensor (9), to determine an acceleration of a display unit (3) based on the acceleration (a) of the motor vehicle (1), which in vertical direction (y) is arranged rigidly on the motor vehicle (1) so that an occupant (14) of the motor vehicle (1) can view it with his eyes (14), the acceleration (a) of the display unit (3) in particular the acceleration (a) of the motor vehicle (1) is equated, and - by means of the interface (11) to control the display unit (3) in such a way that the image content displayed on the display unit (3) is displayed in the vertical direction (y) of a vertical B e movement of the eyes (15) of the occupant (14) follow synchronously, wherein an acceleration (a) of the motor vehicle (1) in the vertical direction (y) leads to an acceleration of the occupant (14) in the vertical direction (y), wherein a vertical deflection (A ₁ ) of the motor vehicle (1) and a vertical deflection (A ₂ ) of the eyes (15) of the occupant (14) from the processor unit (10) according to the formulas $${\mathrm{A.}}_2\left(t\right)={\widehat{y}}_2\ast e^{-{\mathrm{\delta }}_{2}t}\ast \text{cos}\left({\mathrm{\omega }}_{2}t+\phi \right)$$

$${\delta }_2={\omega }_2\ast \mathrm{D.}$$

and $${\mathrm{A.}}_1\left(t\right)={\widehat{y}}_1\ast e^{-{\mathrm{\delta }}_{1}t}\ast \text{cos}\left({\mathrm{\omega }}_{1}t+\phi \right)$$

$${\delta }_1={\omega }_1\ast \mathrm{D.}$$

are calculated with amplitude (ŷ ₂ ) head deflection, decay constant (δ ₂ ) head deflection, undamped natural angular frequency (ω ₂ ) head deflection, degree of damping (D) and phase difference (φ) of the oscillation and with amplitude (ŷ ₁ ) vehicle deflection (1 ) and display unit (3), decay constant (δ ₁ ) deflection motor vehicle (1) and display unit (3), undamped natural angular frequency (ω ₁ ) deflection motor vehicle (1) and display unit (3), degree of damping (D) and phase difference (φ) of the Vibration.

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