# US 2019/0244553 A1 · Head-up display and method for controlling an image-generation device of a head-up display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0244553 A1 - Document ID: US20190244553A1 - Status: Published application - Kind: A1 - Application number: 16/315,669 - Filed: 2017-06-30 - Published: 2019-08-08 - Earliest claimed: 2016-07-05 - Assignees: Valeo Comfort and Driving Assistance - Applicants: Valeo Comfort and Driving Assistance - Inventors: Michael Irzyk - Web page: https://patentgrep.com/patent/US20190244553A1 ## CPC - G09G 3/002: {to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT} - G02B 27/01: Head-up displays - G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)} - G06F 3/04815: Interaction with a metaphor-based environment or interaction object displayed as three-dimensional [3D], e.g. changing the user viewpoint with respect to the environment or object - B60K 35/213: {Virtual instruments} - B60K 35/23: Head-up displays [HUD] (optical aspects of head-up displays G02B27/01) - B60K 35/233: controlling the size or position in display areas of virtual images depending on the condition of the vehicle or the driver - B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver - B60K 35/81: for controlling displays - B60K 2360/31: Virtual images - B60K 2360/334: Projection means - G02B 2027/0118: {comprising devices for improving the contrast of the display / brillance control visibility} - G02B 2027/014: {comprising information/image processing systems} - G02B 2027/0141: {characterised by the informative content of the display} - G08G 1/09626: {where the origin of the information is within the own vehicle, e.g. a local storage device, digital map} - G09G 2320/0626: for control of overall brightness - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) ## Abstract The invention relates to a method for controlling an image-generation device (11) of a head-up display (10) for a motor vehicle, comprising: a step of acquiring data relating to the operation and/or the environment of the motor vehicle, and a step of controlling the display, via the image-generation device, of at least two driving-assistance information items, based upon the acquired data. According to the invention, during the control step, the light intensity of at least one information item is time-modulated with respect to the light intensity of the other information item. The invention also relates to a head-up display comprising a computer capable of performing the above-mentioned method. ## Claims ### Claim 1 A method for controlling an image-generating device of a head-up display for a motor vehicle, comprising: acquisition of data relating to the operation and/or to the environment of the motor vehicle; and generation of an image, by the image-generating device, comprising at least two items of driving aid information, based on the acquired data, provision is made to temporally modulate the light intensity of at least one item of information relative to the light intensity of another item of information. ### Claim 2 (depends on 1) The control method as claimed in claim 1, wherein, when generating the image, provision is made to continuously modulate the light intensity of said item of information. ### Claim 3 (depends on 1) The control method as claimed in claim 1, wherein: when acquiring the data, provision is made to acquire the value of at least one parameter relating to the traffic conditions of the motor vehicle, and when generating the image, provision is made to modulate the light intensity of said item of information based on the variations of the value of said parameter. ### Claim 4 (depends on 3) The control method as claimed in claim 3, wherein the light intensity of said item of information is modulated to vary between a maximum intensity level and a minimum intensity level. ### Claim 5 (depends on 4) The control method as claimed in claim 4, wherein: as long as the value of said parameter remains substantially constant, the light intensity of said item of information is controlled to remain equal to the minimum intensity level, and as soon as the value of said parameter varies substantially, the light intensity of said item of information is increased to the maximum intensity level where it is maintained constant, then, as soon as the value of said parameter has remained substantially constant for a predetermined time, the light intensity of said item of information is reduced to the minimum intensity level. ### Claim 6 (depends on 4) The control method as claimed in claim 4, wherein provision is made to vary the light intensity of said item of information faster when the light intensity is increased than when the light intensity is reduced. ### Claim 7 A head-up display for a motor vehicle, comprising: an image-generating device; a system for projecting a virtual image into the visual field of the driver of the motor vehicle; and a computer for acquiring data relating to the operation and/or to the environment of the motor vehicle, and to control the image-generating device to generate an image comprising at least two items of driving aid information, based on the acquired data, wherein the image-generating device independently varies the light intensity of each item of information, and controls the image-generating device to temporally modulate the light intensity of each item of information relative to one another. ### Claim 8 (depends on 7) The head-up display as claimed in claim 7, wherein the computer acquires the value of at least one parameter relating to the traffic conditions of the motor vehicle and to temporally modulate the light intensity of one of the items of information in light of the variations of the value of said parameter. ### Claim 9 (depends on 7) The head-up display as claimed in claim 7, wherein the computer is adapted to vary the light intensity of one of the items of information between a maximum intensity level and a minimum intensity level.