# US 11,440,410 B2 · Head-up display for a vehicle

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- Number: US 11,440,410 B2
- Document ID: US11440410B2
- Status: Granted
- Kind: B2
- Application number: 16/998,124
- Filed: 2020-08-20
- Published: 2021-03-04
- Granted: 2022-09-13
- Earliest claimed: 2019-08-26
- Assignees: Audi AG
- Applicants: Audi AG
- Inventors: Stefan Morber; Cedomir Dijanovic; Marcus Richter
- Web page: https://patentgrep.com/patent/US11440410B2

## CPC

- B60K 35/23: Head-up displays [HUD] (optical aspects of head-up displays G02B27/01)
- H04N 9/3194: {including sensor feedback}
- B60K 35/10: Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
- B60K 35/81: for controlling displays
- G06T 3/18: Image warping, e.g. rearranging pixels individually
- B60K 2360/785: on or in relation to the windshield or windows
- G02B 27/01: Head-up displays
- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- G02B 2027/011: {comprising device for correcting geometrical aberrations, distortion}
- G02B 2027/014: {comprising information/image processing systems}
- H04N 9/3185: {Geometric adjustment, e.g. keystone or convergence (optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14)}
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A method for operating a head-up display (HUD) of a vehicle, in which a control device of a vehicle transforms a display image to be displayed by a windshield of the vehicle into a reflection image to be reflected by the windshield and a display unit of a head-up display of the vehicle that is associated with the windshield displays the transformed reflection image, and a control device for a head-up display of a vehicle and a vehicle.

## Claims

### Claim 1

A method for operating a heads-up display of a vehicle, comprising:
a control device of a vehicle transforms a display image to be displayed by means of a windshield of the vehicle into a reflection image to be reflected from the windshield;
a display unit of the heads-up display of the vehicle associated with the windshield displays the transformed reflection image; and
the control device for transforming the display image determines a warping matrix as a function of a value of a driving speed of the vehicle,
wherein the speed-dependent determination of the warping matrix comprises at least two constant warping matrices, each associated with predetermined values of the driving speed which are different from one another, and
wherein the speed-dependent determination of the warping matrix for a value of the driving speed different from each predetermined value of the driving speed comprises an interpolation starting from at least one constant warping matrix associated with one of the predetermined values of the driving speed as a function of the value of the driving speed.

### Claim 2 (depends on 1)

The method as claimed in claim 1, wherein one of the at least two constant warping matrices is associated with a zero value driving speed of the vehicle, and
wherein one of the at least two constant warping matrices is associated with a nonzero value driving speed of the vehicle.

### Claim 3 (depends on 2)

The method as claimed in claim 2, wherein the control device receives the value of the driving speed indirectly or directly from a sensor of the vehicle.

### Claim 4 (depends on 1)

The method as claimed in claim 1, wherein the control device receives the value of the driving speed indirectly or directly from a sensor of the vehicle.

### Claim 5

A control device comprising:
a heads-up display of a vehicle configured to:
transform a display image to be displayed by means of a windshield of a vehicle into a reflection image to be reflected from the windshield,
determine a warping matrix for transforming the display image as a function of a value of a driving speed of the vehicle, and
store at least two constant warping matrices, each associated with predetermined values of the driving speed which are different from one another,
wherein the speed-dependent determination of the warping matrix for a value of the driving speed different from each predetermined value of the driving speed is interpolated by an interpolation module starting from at least one constant warping matrix associated with one of the predetermined values of the driving speed as a function of the value of the driving speed.

### Claim 6 (depends on 5)

The control device as claimed in claim 5, wherein one of the at least two constant warping matrices is associated with a zero value driving speed of the vehicle, and
wherein one of the at least two constant warping matrices is associated with a nonzero value driving speed of the vehicle.

### Claim 7 (depends on 6)

The control device as claimed in claim 6, comprising an interface, which is configured to receive a value of a driving speed of the vehicle.

### Claim 8 (depends on 5)

The control device as claimed in claim 5, comprising an interface, which is configured to receive a value of a driving speed of the vehicle.