Light source control device, vehicle comprising same and light

Abstract

The present invention relates to a light source control apparatus, a vehicle including the same, and a lamp. Disclosed is a light source control apparatus including an image acquirer that obtains information about an image to be displayed from a light source matrix, a controller that changes a resolution of the image based on the information about the image and controls operation of the light source matrix, thereby displaying the image having the changed resolution.

Description

[0001] This application claims the benefit of priority to Korean Patent Application No. 10-2021-0077045, filed on June 14, 2021, and Korean Patent Application No. 10-2021-0159653, filed on November 8, 2021, in the Korean Intellectual Property Office, the disclosure of each of which is incorporated herein in its entirety by reference. TECHNICAL FIELD

[0002] The disclosure relates to a light source control device and a lamp. BACKGROUND

[0003] Generally, a headlamp of a vehicle is used to stably secure a foreground when driving at night or in dark tunnel, fog, or rain conditions.

[0004] Recently, as the use of high-resolution light-emitting diodes (LEDs) is expanding, high-resolution LEDs are also used for the headlamp of a vehicle. Accordingly, technologies and applications that project an image on a road surface using the headlamp of a vehicle are being developed.

[0005] In the case of a currently projected image, resolution is gradually increasing. When an image of high resolution is displayed on a display device of low resolution, the image can not be normally displayed, and can display only a part of the image. In addition, when an image of low resolution is displayed on a display device having high resolution, the image can be displayed smaller than a normal size.

[0006] In the case of a headlamp of a vehicle, when an image is displayed on a road surface or a specific object, a problem can occur in which the entire image cannot be displayed. SUMMARY

[0007] The disclosure aims to solve the above-described problems occurring in the related art while maintaining the advantages achieved by the related art in its entirety.

[0008] One aspect of the disclosure provides a light source control device that controls the operation of a light source matrix so that an image to be displayed on a road surface can be output in the same size by changing the resolution of the image.

[0009] Another aspect of the disclosure provides a light source control device that controls the operation of a light source matrix so that the resolution of an image to be displayed on a road surface is changed and an irradiation angle is changed according to the presence or absence of an obstacle in front of a vehicle.

[0010] One aspect of the disclosure provides a lamp that determines a region for projecting an image and accurately projects the image on the determined region on which the image is to be projected.

[0011] One aspect of the present disclosure provides a light capable of recognizing a projection surface of an image and automatically setting a resolution of the image.

[0012] One aspect of the present disclosure provides a light capable of displaying an image on a projection surface by recognizing the projection surface of the image and by setting a resolution of the image or performing automatic leveling.

[0013] The technical problems to be solved by the present disclosure are not limited to the above-mentioned problems, and any other technical problems not mentioned herein will be clearly understood by those skilled in the art through the following description.

[0014] According to one aspect of the present disclosure, a light source control device includes an image acquirer configured to obtain information about an image to be displayed from a light source matrix, and a controller configured to change a resolution of the image based on the information about the image and control an operation of the light source matrix, thereby displaying the image having the changed resolution.

[0015] According to an embodiment, the information about the image can include resolution information of the image.

[0016] According to an embodiment, the controller can compare the resolution information of the image with resolution information represented by the light source matrix, and can calculate a number of pixels of the image to be represented by each light source included in the light source matrix when the resolution information of the image is greater than the resolution information represented by the light source matrix.

[0017] According to an embodiment, the controller can set a pixel of the image to be displayed by each light source based on the calculated number of pixels.

[0018] According to an embodiment, when each light source displays a plurality of pixels of the image, the controller can calculate an average value of image information of the plurality of pixels to allow each light source to display the pixel.

[0019] According to an embodiment, when the resolution information of the image is less than the resolution information represented by the light source matrix, the controller can calculate a number of light sources included in the light source matrix corresponding to one pixel of the image.

[0020] According to an embodiment, the controller can match each of the image pixels with each light source included in the light source matrix based on the calculated number of light sources, and can allow each light source to display the corresponding image information.

[0021] According to an embodiment, the light source control device can further include an information acquirer obtaining information about an obstacle in front of a vehicle from a sensor, and the controller can change the resolution of the image based on the information about the obstacle in front of the vehicle.

[0022] According to an embodiment, the controller can calculate a distance of the light source matrix projection image based on the information about the obstacle in front of the vehicle, and can change the resolution of the image based on the calculated distance.

[0023] According to an embodiment, when the obstacle exists in front of the vehicle, the controller can allow the light source matrix to lower an irradiation angle to avoid the obstacle.

[0024] According to an embodiment, when it is determined that the obstacle is a wall, the controller increases an irradiation angle of the light source matrix and allows the image to be projected on the wall.

[0025] According to an embodiment, when the vehicle is in a powder saving mode or a standby mode in which an ignition device is not turned on, the controller can lower the resolution of the image and can allow the light source matrix to display the lowered resolution image.

[0026] According to an aspect of the disclosure, an operation method of a light source control apparatus includes obtaining information about an image to be displayed from a light source matrix, changing a resolution of the image based on the information about the image, and controlling an operation of the light source matrix so as to display the image having the changed resolution.

[0027] According to an embodiment, the changing of the resolution of the image based on the information about the image can include comparing resolution information of the image with resolution information represented by the light source matrix, calculating a number of pixels of the image to be represented by each light source included in the light source matrix when the resolution information of the image is greater than the resolution information represented by the light source matrix, and setting a pixel of the image to be displayed by each light source based on the calculated number of pixels.

[0028] According to an embodiment, the changing of the resolution of the image based on the information about the image can include comparing resolution information of the image with resolution information represented by the light source matrix, calculating a number of light sources corresponding to one pixel of the image included in the light source matrix when the resolution information of the image is less than the resolution information represented by the light source matrix, and matching each of the image pixels with each of the light sources included in the light source matrix based on the calculated number of light sources.

[0029] According to an embodiment, the operation method of the light source control apparatus can further include obtaining information about an obstacle in front of the vehicle from a sensor, and changing the resolution of the image based on the information about the obstacle in front of the vehicle.

[0030] According to an embodiment, the changing of the resolution of the image based on the information about the obstacle in front of the vehicle can include calculating a distance of the light source matrix projection image based on the information about the obstacle in front of the vehicle, and changing the resolution of the image based on the calculated distance.

[0031] According to an embodiment, the operation method of the light source control apparatus can further include allowing the light source matrix to lower an irradiation angle to avoid the obstacle when there is an obstacle in front of the vehicle.

[0032] According to an embodiment, the operation method of the light source control apparatus can further include increasing the irradiation angle of the light source matrix and allowing the image to be projected onto the wall when it is determined that the obstacle is a wall.

[0033] According to an embodiment, the operation method of the light source control apparatus can further include determining that the vehicle is in an energy saving mode or a standby mode in which an ignition device is not turned on, lowering a resolution of the image, and allowing the light source matrix to display the lowered resolution image.

[0034] According to an aspect of the disclosure, a lamp includes a sensor configured to sense an object in front of a vehicle, a display configured to display an image, and a controller configured to determine a first area onto which the image is projected based on the sensed object and set a second area of the display in which the image is displayed corresponding to the first area.

[0035] According to an embodiment, the controller can determine whether the first area is a wall surface or a ground surface based on the sensed object.

[0036] According to an embodiment, when the first area is the wall surface, the controller sets the second area to display the image on the wall surface.

[0037] According to an embodiment, when the first area is the wall surface, the controller can set the second area based on a distance between the wall surface and the vehicle.

[0038] According to an embodiment, when the first area is the ground surface, the controller can set the second area to display the image on the ground surface.

[0039] According to an embodiment, the second area can be a low beam area of the display.

[0040] According to an embodiment, the lamp can further include a resolution setter that sets a resolution of the image to correspond to a size of the second area.

[0041] According to an embodiment, when the resolution of the image is equal to or greater than a number of pixels in the second area of the display, the resolution setter can decrease the resolution of the image to correspond to the number of pixels.

[0042] According to an embodiment, when the resolution of the image is less than the number of pixels in the second area of the display, the resolution setter can increase the resolution of the image to correspond to the number of pixels.

[0043] According to an embodiment, the lamp can further include a driving device that adjusts a projection angle of the display.

[0044] According to an embodiment, the controller can identify a resolution of the image and control the driving device so that the image is displayed on all areas of the display when the resolution of the image is equal to or greater than the number of pixels of the display.

[0045] According to an embodiment, the sensor can include a distance sensing sensor or a camera.

[0046] According to an embodiment, the method of operating the light includes sensing an object in front of the vehicle, determining a first area for projecting the image based on the sensed object, setting a second area of the display displaying the image corresponding to the first area, and displaying the image.

[0047] According to an embodiment, determining the first area for projecting the image based on the sensed object can include determining whether the first area is a wall surface or a floor based on the sensed object.

[0048] According to an embodiment, the method of operating the light can further include setting a resolution of the image to correspond to a size of the second area.

[0049] According to an embodiment, the method of operating the light can further include adjusting a projection angle of the display. BRIEF DESCRIPTION OF DRAWINGS

[0050] The above and other objects, features and advantages of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0051] Figure 1 is a block diagram illustrating a light source control apparatus according to an embodiment of the present disclosure;

[0052] Figure 2 and Figure 3 is a diagram illustrating how a resolution of an image changes in a light source control apparatus according to an embodiment of the present disclosure;

[0053] Figure 4 is a diagram illustrating how a resolution of an image changes in a light source control apparatus according to an embodiment of the present disclosure when an obstacle exists in front of a vehicle;

[0054] Figure 5 and Figure 6 is a diagram illustrating an example in which a light source matrix is allowed to change an angle of irradiation of an image in a light source control apparatus according to an embodiment of the present disclosure when a wall exists in front of a vehicle;

[0055] Figure 7 is a flowchart illustrating a method of operating a light source control apparatus according to an embodiment of the present disclosure;

[0056] Figure 8 and Figure 9 is a flowchart illustrating operation S120 of a method of operating a light source control apparatus according to an embodiment of the present disclosure;

[0057] Figure 10 and Figure 11 is a flowchart illustrating in more detail a method of operating a light source control device according to an embodiment of the disclosure;

[0058] Figure 12 is a block diagram illustrating a lamp according to an embodiment of the disclosure;

[0059] Figure 13 is a diagram illustrating an example in which a lamp detects an object in front of a vehicle according to an embodiment of the disclosure;

[0060] Figure 14 is a diagram illustrating an example in which a region of a lamp display image is set according to an embodiment of the disclosure;

[0061] Figure 15 is a diagram illustrating an example in which a lamp does not detect an object in front of a vehicle according to an embodiment of the disclosure;

[0062] Figure 16 is a diagram illustrating an example in which a region of a lamp display image is set according to an embodiment of the disclosure;

[0063] Figure 17 is a diagram illustrating an example in which a lamp performs automatic leveling according to an embodiment of the disclosure;

[0064] Figure 18 is a diagram illustrating an example in which a lamp performs automatic leveling or changes resolution according to an image resolution according to an embodiment of the disclosure;

[0065] Figure 19 is a flowchart illustrating a method of operating a lamp according to an embodiment of the disclosure; and

[0066] Figure 20 is a flowchart illustrating in more detail a method of operating a lamp according to an embodiment of the disclosure. DETAILED DESCRIPTION

[0067] Hereinafter, some embodiments of the disclosure will be described in detail with reference to the exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same or equivalent components are identified by the same reference numerals even if they are shown on other drawings. Also, in describing embodiments of the disclosure, detailed descriptions of well-known features or functions will be omitted in order not to unnecessarily obscure the spirit of the disclosure.

[0068] In describing components of embodiments according to the present disclosure, terms such as first, second, "A," "B," (a), (b), etc. can be used. These terms are merely intended to distinguish one component from another and do not limit the nature, sequence, or order of the components. Unless otherwise defined, all terms used herein, including technical terms or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Such terms, as commonly defined in a generally used dictionary, should be interpreted as having a meaning that is the same as in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly so defined in the present application.

[0069] Figure 1 is a block diagram illustrating a light source control apparatus according to an embodiment of the present disclosure.

[0070] Referring to Figure 1 The light source control apparatus 100 according to an embodiment of the present disclosure can include an image acquirer 110 and a controller 120.

[0071] The image acquirer 110 can obtain (or receive) information about an image to be displayed in a light source matrix. For example, the information about the image can include at least one of resolution information of the image, image data of each pixel included in the image, and RGB data of each pixel included in the image.

[0072] The controller 120 can change a resolution of the image based on the information about the image. For example, the controller 120 can change the resolution of the image based on the resolution information of the image and resolution information capable of being represented (or projected) by the light source matrix.

[0073] The controller 120 can compare the resolution information of the image with the resolution information capable of being represented (or projected) by the light source matrix. For example, as a result of the comparison, when the resolution information of the image is greater than the resolution information capable of being represented by the light source matrix, the controller 120 can calculate the number of pixels of the image that should be represented by each light source included in the light source matrix. In this case, the controller 120 can set pixels of the image to be displayed by each light source based on the calculated number of pixels.

[0074] In an embodiment, when each light source needs to display a plurality of pixels of an image, the controller 120 can calculate an average value of image information (e.g., image values) of the plurality of pixels to allow each light source to display a pixel of the image. For example, when one light source needs to display four image pixels, the controller 120 can allow the light source to display a pixel of the image by calculating an average value of RGB data of the four pixels. That is, when a resolution size of an image is greater than a resolution size that can be represented by a light source matrix, the controller 120 can reduce the resolution of the image and can change it to the resolution size that can be represented by the light source matrix.

[0075] Figure 2 is a diagram illustrating how a resolution of an image is changed in a light source control apparatus according to an embodiment of the present disclosure.

[0076] Referring to Figure 2 , an image 210 to be displayed in a light source matrix can have a resolution of 15*8, and a light source matrix 220 represents a resolution of 5*4. In this case, because the resolution of the image 210 is greater than the resolution that can be represented by the light source matrix 220, each light source included in the light source matrix can have to represent a plurality of image pixels.

[0077] Because a horizontal axis of the image 210 has a size of 15 pixels, but a horizontal axis of the light source matrix 220 can represent 5 pixels, each light source included in the light source matrix 220 can have to represent three horizontal axis pixels of the image 210. Also, because a vertical axis of the image 210 has a size of 8 pixels, but a vertical axis of the light source matrix 220 can represent 4 pixels, each light source included in the light source matrix 220 can have to represent two vertical axis pixels of the image 210. That is, each light source included in the light source matrix 220 can have to represent a pixel of the image 210 having a size of 3*2.

[0078] When the resolution of the image 210 is greater than the resolution that can be represented by the light source matrix 220, the controller 120 can calculate the number of image pixels that should be represented by each light source included in the light source matrix 220 through the above-described process. In Figure 2 , the controller 120 can calculate the number of pixels of the image 210 having a size of 3*2 that should be represented by each light source included in the light source matrix 220.

[0079] When calculating the number and size of pixels of the image 210 to be represented by each light source included in the light source matrix 220, the controller 120 can set (or select) a pixel of the image to be projected by each light source. For example, the controller 120 can set: Figure 2 a portion A1 displayed in the image 210 in corresponds to a portion A2 displayed in the light source matrix 220.

[0080] The controller 120 sets pixels of the image to be represented by each light source, and when a plurality of pixels of the image need to be displayed by each light source, the controller 120 can calculate an average value of image information of the plurality of pixels to allow each light source to display the pixel. For example, the controller 120 can calculate an average value of image data of each pixel of a portion A1 displayed in the image 210, and can control the operation of the light source matrix 220 so that the calculated average value of the pixel image data is displayed on a portion A2 displayed in the light source matrix 220. For example, the controller 120 can calculate an average value of RGB data of each pixel of the portion A1 displayed in the image 210, and can control the operation of the light source matrix 220 so that the calculated average value is displayed on the portion A2 displayed in the light source matrix 220.

[0081] In Figure 2 , although the resolution of the image 210 is 15*8 and the resolution that can be represented by the light source matrix 220 is 5*4, the disclosure is not limited thereto. That is, when the resolution of the image 210 is x*y (x and y are natural numbers greater than or equal to 1) and the resolution that can be represented by the light source matrix 220 is z*w (z and w are natural numbers greater than or equal to 1), the controller 120 can compare the resolution of the image 210 with the resolution that can be represented by the light source matrix 220, can calculate the number of image pixels that should be represented by each light source included in the light source matrix when the resolution of the image 210 is greater than the resolution that can be represented by the light source matrix 220 as a comparison result, and can set image pixels to be displayed in each light source based on the calculated number of pixels.

[0082] In an embodiment, when the resolution of the image 210 is divided by the resolution that can be represented by the light source matrix 220, it can not be divided by a natural number. In this case, the controller 120 can discard a remainder when the resolution of the image 210 is divided by the resolution that can be represented by the light source matrix 220, and can calculate the number of image pixels that should be represented by each light source included in the light source matrix 220.

[0083] Referring back to Figure 1 , when the controller 120 compares the resolution of the image with the resolution that can be represented by the light source matrix, the controller 120 can calculate the number of light sources corresponding to one image pixel included in the light source matrix when the resolution of the image is less than the resolution that can be represented by the light source matrix. For example, the controller 120 can divide the horizontal axis size of the resolution that can be represented by the light source matrix by the horizontal axis size of the image resolution, and can divide the vertical axis size of the resolution that can be represented by the light source matrix by the vertical axis size of the image resolution, thereby calculating the number of light sources corresponding to one image pixel included in the light source matrix.

[0084] The controller 120 can match each image pixel with each light source included in the light source matrix based on the calculated number of light sources. For example, the controller 120 can match one image pixel with a plurality of light sources. In this case, the controller 120 can allow each light source included in the light source matrix to display image information of the image pixel corresponding to each light source. That is, when the resolution size of the image is smaller than the resolution size that can be represented by the light source matrix, the controller 120 can change the resolution of the image to correspond to the size of the light source matrix.

[0085] Figure 3 FIG. 4 is a diagram illustrating how the resolution of an image is changed in a light source control device according to an embodiment of the present disclosure.

[0086] Referring to Figure 3 , the image 310 to be displayed in the light source matrix can have a resolution of 5*4, and the light source matrix 320 represents a resolution of 15*8. In this case, because the resolution of the image 310 is smaller than the resolution that can be represented by the light source matrix 320, each of a plurality of light sources included in the light source matrix can have to represent one image pixel.

[0087] Because the horizontal axis of the image 310 has a size of 5 pixels, and the horizontal axis of the light source matrix 320 can represent 15 pixels, three light sources included in the light source matrix 320 can have to represent one horizontal axis pixel of the image 310. Also, because the vertical axis of the image 310 has a size of 4 pixels, and the vertical axis of the light source matrix 320 can represent 8 pixels, two light sources included in the light source matrix 320 can have to represent one vertical axis pixel of the image 310. That is, one pixel of the image 310 can have to be represented by a light source having a size of 3*2 among the light sources included in the light source matrix 320.

[0088] When the resolution of the image 310 is smaller than the resolution that can be represented by the light source matrix 320, the controller 120 can calculate the number of light sources included in the light source matrix 320 that should represent one pixel of the image 310 through the above-described process. In Figure 3 , the controller 120 can calculate that the light source having a size of 3*2 among the light sources included in the light source matrix 320 should represent one pixel of the image 310.

[0089] The controller 120 can correspond each pixel of the image 310 with each light source included in the light source matrix 320 based on the calculated number of light sources. For example, the controller 120 can set that a portion A3 displayed in the image 310 in Figure 3 corresponds to a portion A4 displayed in the light source matrix 320. That is, the controller 120 can set that all light sources included in the portion A4 correspond to the image pixel of the portion A3.

[0090] The controller 120 can control the operation of the light source matrix 320 so that each light source included in the light source matrix 320 displays data of a corresponding image pixel.

[0091] In Figure 3 In the above, although the resolution of the image 310 is 5*4 and the resolution that can be expressed in the light source matrix 320 is 15*8, the disclosure is not limited thereto. That is, when the resolution of the image 310 is x*y (x and y are natural numbers greater than or equal to 1) and the resolution that can be expressed by the light source matrix 320 is z*w (z and w are natural numbers greater than or equal to 1), the controller 120 can compare the resolution of the image 310 with the resolution that can be expressed by the light source matrix 320, can calculate the number of light sources included in the light source matrix 320 to express one pixel of the image 310 as a comparison result when the resolution of the image 310 is less than the resolution that can be expressed by the light source matrix 320, and can set the image pixel to be displayed in each light source based on the calculated number of light sources.

[0092] The light source control device 100 according to an embodiment of the disclosure can further include an information obtainer 130.

[0093] The information obtainer 130 can obtain information about an obstacle in front of the vehicle from a sensor. For example, the sensor can include at least one of a camera, a radar (RADAR), and a laser radar (LIDAR, Light Detection and Ranging). As another example, the obstacle in front of the vehicle can include at least one of another vehicle in front of the vehicle and a wall present in front of the vehicle. As another example, the information about the obstacle in front of the vehicle obtained by the information obtainer 130 can include at least one of a distance to the obstacle in front of the vehicle, a type of the obstacle, and a height of the obstacle.

[0094] The controller 120 can change the resolution of the image based on the information about the obstacle in front of the vehicle obtained by the information obtainer 130. For example, when there is an obstacle in front of the current vehicle, the controller 120 can change the resolution of the image to be lower based on the distance to the obstacle, and can control the operation of the light source matrix so that the light source matrix does not project the image on the obstacle.

[0095] In an embodiment, the controller 120 can calculate a distance at which the light source matrix is capable of projecting an image based on information about an obstacle in front of the vehicle. For example, the controller 120 can calculate a distance to the obstacle based on information obtained from the sensor, and can calculate a distance at which an image is capable of being projected from the light source matrix based on the calculated distance to the obstacle. In this case, the controller 120 can change a resolution of the image based on the calculated distance at which the image is capable of being projected. For example, the controller 120 can calculate a ratio of a distance at which an image is capable of being projected from the light source matrix in the absence of the obstacle to a distance at which the image is capable of being projected due to the presence of the obstacle, and can change the resolution of the image based on the calculated ratio.

[0096] Figure 4 FIG. 2 is a diagram illustrating an example in which a light source control apparatus changes a resolution of an image and allows a light source matrix to display the image when an obstacle is present in front of a vehicle according to an embodiment of the disclosure.

[0097] Referring to Figure 4 The information obtainer 130 can obtain information about an obstacle in front of the vehicle 410 from a sensor of the vehicle 410. For example, the information obtainer 130 can obtain information about another vehicle 420 in front of the vehicle 410 from a sensor of the vehicle 410. As another example, the information obtainer 130 can obtain information about a distance between the vehicle 410 and the other vehicle 420.

[0098] The controller 120 can change a resolution of an image to be displayed by the light source matrix based on the distance between the vehicle 410 and the other vehicle 420 obtained by the information obtainer 130. For example, the controller 120 can calculate a distance D2 at which an image is capable of being projected from the light source matrix due to the presence of the other vehicle 420, and can change the resolution of the image based on the calculated distance.

[0099] In an embodiment, the controller 120 can calculate a ratio of a distance D1 at which an image is displayed from the light source matrix when the other vehicle 420 is not present to a distance D2 at which an image is capable of being projected from the light source matrix due to the presence of the other vehicle 420, and can change the resolution of the image based on the calculated ratio. For example, when the ratio of the distance D1 to the distance D2 is calculated as 2:1, the controller 120 can change the resolution of the image to half of a horizontal axis and half of a vertical axis, and can control an operation of the light source matrix so that the light source matrix displays the image of which the resolution is changed.

[0100] Referring back to Figure 1When an obstacle exists in front of the vehicle, the controller 120 can allow the light source matrix to lower the irradiation angle to avoid the obstacle. For example, when an obstacle exists in front of the vehicle, because an image can be projected on the obstacle and can cause an error of the image, the controller 120 can allow the light source matrix to project an accurate image by lowering the irradiation angle of the light source matrix.

[0101] In an embodiment, when it is determined that the obstacle in front of the vehicle is a wall, the controller 120 can allow the light source matrix to project an image on the wall by increasing the irradiation angle of the light source matrix. For example, the controller 120 can determine whether the obstacle in front of the vehicle is a wall based on information about a distance between the vehicle and the obstacle and information about a height of the obstacle included in the information about the obstacle in front of the vehicle, and when it is determined that the obstacle is a wall, the controller 120 can control the operation of the light source matrix so that an image can be projected on the wall.

[0102] Figure 5 and Figure 6 are diagrams illustrating an example in which the light source control device according to an embodiment of the disclosure allows the light source matrix to change the angle of irradiation of an image when a wall exists in front of the vehicle.

[0103] Referring to Figure 5 , the information obtainer 130 can obtain information about an obstacle 520 in front of the vehicle 510. For example, the information obtainer 130 can obtain information about a distance to the obstacle 520 in front of the vehicle 510 and information about a type of the obstacle 520.

[0104] When the distance to the obstacle 520 in front of the vehicle 510 is less than a distance at which the light source matrix is capable of projecting an image when there is no obstacle, the controller 120 can allow the light source matrix to lower the angle of irradiation of the image. That is, the controller 120 can control the operation of the light source matrix so that an image is not projected on the obstacle 520.

[0105] Referring to Figure 6 , the information obtainer 130 can obtain information about an obstacle 620 in front of the vehicle 610. For example, the information obtainer 130 can obtain information about a distance to the obstacle 620 in front of the vehicle 610 and information about a height of the obstacle 620.

[0106] The controller 120 can determine whether the obstacle 620 in front of the vehicle 610 is a wall based on information obtained from the information obtainer 130. For example, when it is determined that the height of the obstacle 620 is equal to or greater than a preset value and the profile of the obstacle 620 is flat, the controller 120 can determine that the obstacle 620 is a wall. In this case, the controller 120 can allow the light source matrix to project an image on the obstacle 620 by increasing the irradiation angle of the light source matrix. That is, when the obstacle 620 is a wall, the controller 120 can control the operation of the light source matrix so that an image is projected on the wall by increasing the irradiation angle of the light source matrix.

[0107] According to an embodiment, the controller 120 of the light source control apparatus 100 can determine whether the vehicle is in an energy saving mode or in a standby mode in which the ignition device is not turned on. For example, the controller 120 can obtain from another device inside the vehicle whether the vehicle is in an energy saving mode or in a standby mode in which the ignition device is not turned on. As another example, the controller 120 can directly determine whether it is in an energy saving mode or in a standby mode in which the ignition device is not turned on.

[0108] When the vehicle is in an energy saving mode or in a standby mode in which the ignition device is not turned on, the controller 120 can reduce the resolution of the image, and can allow the light source matrix to display the image having the reduced resolution. For example, when the vehicle is in a standby mode or an energy saving mode, the controller 120 can control the operation of the light source matrix to display an image having a lower resolution due to the need to reduce power consumption.

[0109] The light source control apparatus 100 according to an embodiment of the disclosure can obtain an image to be displayed in the light source matrix through the image obtainer 110, can change the resolution of the image through the controller 120 to allow the light source matrix to output the image having the changed resolution by controlling the operation of the light source matrix, and can provide a user with an accurate image suitable for the resolution that the light source matrix can display.

[0110] The light source control apparatus 100 according to another embodiment of the disclosure can obtain the presence or absence of an obstacle from a sensor, and can change the resolution of an image or change the irradiation angle of a light source matrix according to the presence of an obstacle and the type of the obstacle, thereby providing a user with an image that does not appear to be erroneous due to an obstacle.

[0111] Figure 7 is a flowchart illustrating a method of operating a light source control apparatus according to an embodiment of the disclosure.

[0112] Referring to Figure 7The method of operating the light source control apparatus 100 according to an embodiment of the disclosure can include obtaining information about an image to be displayed from a light source matrix (S110), changing a resolution of the image based on the information about the image (S120), and controlling an operation of the light source matrix to display the image having the changed resolution (S130).

[0113] In operation S110 of obtaining information about an image to be displayed from a light source matrix, the image obtainer 110 can obtain information about an image to be displayed from a light source matrix. For example, the image obtainer 110 can obtain resolution information of an image to be displayed from a light source matrix. As another example, the image obtainer 110 can obtain at least one of image information, image data, and RGB data of a pixel included in an image to be displayed from a light source matrix.

[0114] In operation S120 of changing a resolution of an image based on information about the image, the controller 120 can change a resolution of an image based on information about the image obtained by the image obtainer 110. For example, the controller 120 can change to reduce or increase a resolution of an image based on obtained resolution information of the image. As another example, the controller 120 can change a resolution of an image based on resolution information of the image and resolution information capable of being represented by a light source matrix. In an embodiment, the controller 120 can change a resolution of an image based on information about the image obtained in operation S120 to output an image matching a size of a light source matrix.

[0115] In operation S130 of controlling an operation of a light source matrix to display an image having a changed resolution, the controller 120 can control an operation of a light source matrix to display an image having a changed resolution. For example, the controller 120 can set image information to be displayed by each light source included in a light source matrix, and can control an operation of a light source matrix so that each light source included in the light source matrix displays the set image information. As another example, the controller 120 can control an operation of a light source matrix to change an angle at which a light source irradiates an image by a matrix.

[0116] Figure 8 and Figure 9 is a flowchart illustrating operation S120 of a method of operating a light source control apparatus according to an embodiment of the disclosure.

[0117] Referring to Figure 8In the operation method of the light source control device 100 according to an embodiment of the disclosure, the operation S120 includes comparing resolution information of an image with resolution information capable of being represented by a light source matrix (S210), calculating a number of pixels of the image to be represented by each light source included in the light source matrix when the resolution information of the image is greater than the resolution information capable of being represented by the light source matrix (S220), and setting pixels of the image to be displayed by each light source based on the calculated number of pixels (S230).

[0118] In the operation S210 of comparing the resolution information of the image with the resolution information capable of being represented by the light source matrix, the controller 120 can compare the resolution information of the image with the resolution information capable of being represented by the light source matrix. For example, the controller 120 can compare horizontal axis size (resolution) information and vertical axis size (resolution) information of the image included in the resolution information of the image with horizontal axis size (resolution) information and vertical axis size (resolution) information capable of being represented by the light source matrix. According to an embodiment, the controller 120 can determine that the resolution of the image is greater than the resolution capable of being represented by the light source matrix. According to an embodiment, the controller 120 can determine that the resolution of the image is less than the resolution capable of being represented by the light source matrix.

[0119] When the resolution of the image is greater than the resolution capable of being represented by the light source matrix, in the operation S220 of calculating the number of pixels of the image to be represented by each light source included in the light source matrix, the controller 120 can calculate the number of image pixels to be represented by each light source included in the light source matrix when the resolution of the image is greater than the resolution information capable of being represented by the light source matrix. For example, the controller 120 can divide the horizontal axis size of the image information by the horizontal axis size of the light source matrix, and can divide the vertical axis size of the image information by the vertical axis size of the light source matrix to calculate the number of pixels of the image to be represented by each light source included in the light source matrix. In an embodiment, when the resolution of the image is 15*8 and the resolution capable of being represented by the light source matrix is 5*4, the controller 120 can calculate that each light source included in the light source matrix should represent pixels of an image having a size of 3*2.

[0120] In the operation S230 of setting the pixels of the image to be displayed by each light source based on the calculated number of pixels, the controller 120 can set the pixels of the image to be displayed by each light source based on the calculated number of image pixels to be represented by each light source included in the light source matrix. For example, when the number of image pixels to be represented by each light source included in the light source matrix is 3*2, the controller 120 can set each of six image pixels to correspond to each light source.

[0121] In an embodiment, when the number of image pixels set for one light source is plural, the controller 120 can allow the light source to display an average value of image information of the image pixels. For example, the average value of the image information of the image pixels can include an average value of RGB data of the image pixels.

[0122] Referring to Figure 9 In the operation method of the light source control apparatus 100 according to an embodiment of the disclosure, the operation S120 can include comparing resolution information of an image with resolution information capable of being represented by a light source matrix (S310), calculating the number of light sources included in the light source matrix corresponding to one image pixel when the resolution of the image is less than the resolution capable of being represented by the light source matrix (S320), and matching each image pixel with each light source included in the light source matrix based on the calculated number of light sources (S330).

[0123] In the operation S310 of comparing the resolution information of the image with the resolution information capable of being represented by the light source matrix, the controller 120 can compare the resolution information of the image with the resolution information capable of being represented by the light source matrix. For example, the operation S310 can actually be the same as the operation S210 of Figure 7 .

[0124] In the operation S320 of calculating the number of light sources included in the light source matrix corresponding to one image pixel when the resolution of the image is less than the resolution capable of being represented by the light source matrix, the controller 120 can calculate the number of light sources included in the light source matrix corresponding to one image pixel when the resolution of the image is less than the resolution information capable of being represented by the light source matrix. For example, the controller 120 can divide the horizontal axis size of the light source matrix by the horizontal axis size of the image resolution, and can divide the vertical axis size of the light source matrix by the vertical axis size of the image resolution, so that the number of light sources included in the light source matrix corresponding to one image pixel can be calculated. In an embodiment, when the resolution of the image is 5*4 and the resolution capable of being represented in the light source matrix is 15*8, the controller 120 can calculate that a 3*2 size of the light sources included in the light source matrix corresponds to one image pixel.

[0125] In the operation S330 of matching each image pixel with each light source included in the light source matrix based on the calculated number of light sources corresponding to each image pixel, the controller 120 can match each image pixel with each light source included in the light source matrix based on the calculated number of light sources corresponding to each image pixel. For example, when a 3*2 size of the light sources included in the light source matrix corresponds to each image pixel, the controller 120 can correspond each of the six light sources to one image pixel.

[0126] In an embodiment, the controller 120 can control the operation of the light source matrix such that each light source corresponding to each image pixel displays image information of the image pixel.

[0127] Figure 10 and Figure 11 is a flowchart illustrating in more detail a method of operating a light source control apparatus according to an embodiment of the disclosure.

[0128] The method of operating the light source control apparatus 100 according to an embodiment of the disclosure can further include obtaining information about an obstacle in front of the vehicle from a sensor (S410) and changing a resolution of an image based on the information about the obstacle in front of the vehicle (S420).

[0129] In the operation S410 of obtaining information about an obstacle in front of the vehicle from a sensor, the information obtainer 130 can obtain information about an obstacle in front of the vehicle from a sensor. For example, the information about the obstacle in front of the vehicle can include at least one of the presence of an obstacle in front of the vehicle, the size of the obstacle, the distance to the obstacle, the height of the obstacle, the flat information of the profile of the obstacle, and the type of the obstacle.

[0130] In the operation S420 of changing a resolution of an image based on information about an obstacle in front of the vehicle, the controller 120 can change the resolution of the image based on the information about the obstacle. For example, when the distance at which the image can be projected is shortened due to the presence of the obstacle, the controller 120 can lower the resolution of the image, and can allow the light source matrix to display the image having the lowered resolution. In an embodiment, the controller 120 can obtain information about the distance to the obstacle in front of the vehicle, can compare the distance to the obstacle with the distance at which the image can be projected by the light source matrix when the obstacle is not present to calculate a ratio, and can change the resolution of the image according to the calculated ratio.

[0131] In an embodiment, the method of operating the light source control apparatus 100 can further include allowing the angle at which the image is irradiated by the light source matrix to be lowered while avoiding the obstacle when the obstacle exists in front of the vehicle. For example, when the obstacle exists in front of the vehicle, the controller 120 can compare the distance to the obstacle with a preset value. In this case, when the distance to the obstacle is less than the preset value, the controller 120 can allow the angle at which the image is irradiated by the light source matrix to be lowered and can control the operation of the light source matrix such that the image is projected while avoiding the obstacle.

[0132] In an embodiment, the method of operating the light source control apparatus 100 can further include, when it is determined that the obstacle is a wall, allowing the light source matrix to project the image onto the wall by increasing an angle at which the light source matrix irradiates the image. For example, the controller 120 can determine whether the obstacle is a wall, and when it is determined that the obstacle is a wall, the controller 120 can control the operation of the light source matrix to project the image onto the wall by increasing an irradiation angle of the light source matrix.

[0133] Referring to Figure 11 The method of operating the light source control apparatus 100 according to an embodiment of the disclosure can further include determining whether the vehicle is in an economy mode or in a standby mode in which an ignition device is not turned on (S510), reducing a resolution of the image (S520), and allowing the light source matrix to display the image having the reduced resolution (S530).

[0134] In the operation S510 of determining whether the vehicle is in the economy mode or in the standby mode in which the ignition device is not turned on, the controller 120 can determine whether the vehicle is in the economy mode or in the standby mode.

[0135] In the operation S520 of reducing the resolution of the image, the controller 120 can reduce the resolution of the image when the vehicle is in the economy mode or in the standby mode. For example, because power consumption needs to be reduced when the vehicle is in the economy mode or in the standby mode, the controller 120 can reduce the resolution of the image. As another example, the controller 120 can reduce the resolution of the image according to a preset ratio.

[0136] In the operation S530 of allowing the light source matrix to display the image having the lower resolution, the controller 120 can allow the light source matrix to display the image having the lower resolution.

[0137] Figure 12 is a block diagram illustrating a lamp according to an embodiment of the disclosure.

[0138] Referring to Figure 12 The lamp 1000 according to an embodiment of the disclosure can include a sensor 1100, a display 1200, and a controller 1300. According to an embodiment, the lamp 1000 can further include a resolution setter 1400. According to another embodiment, the lamp 1000 can further include a driving device 1500. According to another embodiment, the lamp 1000 can further include the resolution setter 1400 and the driving device 1500.

[0139] The sensor 1100 can sense an object in front of the vehicle. For example, the sensor 1100 can sense whether a wall surface exists in front of the vehicle. In an embodiment, the sensor 1100 can include a distance sensing sensor or a camera. For example, the distance sensing sensor can include at least one of a laser radar sensor, a radar sensor, an infrared (IR) sensor, and a time of flight (ToF) sensor.

[0140] The display 1200 can display an image. For example, the display 1200 can display an image processed by the controller 1300 or the resolution setter 1400. As another example, the display 1200 can include a high resolution LED.

[0141] The controller 1300 can determine a first area in front of the vehicle to project an image based on an object sensed by the sensor 1100. For example, when a wall surface is sensed in front of the vehicle, the controller 1300 can determine the wall surface as the first area. As another example, when no object in front of the vehicle is sensed, the controller 1300 can determine the ground as the first area.

[0142] The controller 1300 can set a second area (or a portion) of the display 1200 at which the display 1200 displays (or projects) an image corresponding to the determined first area. For example, when the first area is a wall surface, the controller 1300 can set the second area as an upper area of the display 1200. As another example, when the first area is the ground, the controller 1300 can set the second area as a lower area of the display 1200.

[0143] When the first area is a wall surface, the controller 1300 can set the second area to display an image on the wall surface. Also, when the first area is a wall surface, the controller 1300 can set the second area based on a distance between the wall surface and the vehicle.

[0144] When the first area is the ground, the controller 1300 can set the second area to display an image on the ground.

[0145] The lamp 1000 according to an embodiment of the disclosure can further include a resolution setter 1400. In Figure 12 In the above-described embodiment, the resolution setter 1400 and the controller 1300 are illustrated as separate components, but the disclosure is not limited thereto, and the operation of the resolution setter 1400 can be performed by the controller 1300.

[0146] The resolution setter 1400 can set the resolution of the image to correspond to the set size of the second area. For example, when the resolution of the image is equal to or greater than the number of pixels of the second area of the display 1200, the resolution setter 1400 can reduce the resolution of the image to correspond to the number of pixels. For example, when the resolution of the image is less than the number of pixels of the second area of the display 1200, the resolution setter 1400 can increase the resolution of the image to correspond to the number of pixels.

[0147] The lamp 1000 according to an embodiment of the disclosure can further include a driving device 1500. For example, the driving device 1500 can adjust the angle of projection by the display 1200. As another example, the driving device 1500 can be controlled by the controller 1300.

[0148] The controller 1300 can identify the resolution of the image, and when the resolution of the image is equal to or greater than the number of pixels of the display 1200, the controller 1300 can control the driving device 1500 so that the image is displayed on all areas of the display 1200. For example, the controller 1300 can control the driving device 1500 to allow the display 1200 to be up leveled. As another example, the controller 1300 can control the driving device 1500 to allow the display 1200 to be automatically leveled.

[0149] According to an embodiment, the controller 1300 can determine whether to adjust the area displayed by the display 1200 by controlling the driving device 1500 based on the resolution of the image or to allow the display 1200 to display the image with a changed resolution by allowing the resolution setter 1400 to set the resolution of the image.

[0150] The lamp 1000 according to an embodiment of the disclosure can identify the projection surface of the image and can allow the image to be accurately displayed on the identified projection surface of the image.

[0151] The lamp 1000 according to an embodiment of the disclosure can cause the image to be accurately displayed on the projection surface (first area) of the image by changing the resolution of the image.

[0152] The lamp 1000 according to an embodiment of the disclosure can cause the image to be accurately displayed on the projection surface (first area) of the image by automatic leveling of the lamp 1000.

[0153] The lamp 1000 according to an embodiment of the disclosure can determine whether to change the resolution of the image or to perform automatic leveling based on the resolution of the image, thereby allowing the image to be accurately displayed on the projection surface (first area) of the image.

[0154] Figure 13 FIG. 1 is a diagram illustrating an example in which a lamp according to an embodiment of the disclosure detects an object in front of a vehicle.Figure 13 The 1000 lamp can actually be used with Figure 12 The lamps are the same as 1000.

[0155] Reference Figure 13 The light 1000 can detect objects 1010, 1020, and 1030 in front of the vehicle via sensor 1100. For example, when objects 1010, 1020, and 1030 are detected in front of the vehicle by sensor 1100, the controller 1300 can define a first area as the objects 1010, 1020, and 1030 in front of the vehicle. For example, the objects 1010, 1020, and 1030 in front of the vehicle can be a wall.

[0156] The controller 1300 can set a second area for displaying images on the display 1200 based on the distance to objects 1010, 1020, and 1030 in front of the vehicle. For example, when the first object 1010 is detected, the controller 1300 can set the second area to the entire area of ​​the display 1200 because the display 1200 can display the entire image on the first object 1010. As another example, when the second object 1020 or the third object 1030 is detected, the controller 1300 can set a portion of the display 1200 as the second area because the display 1200 cannot display the entire image on the second object 1020 or the third object 1030. In an embodiment, the controller 1300 can set a portion of the upper area of ​​the display 1200 as the second area.

[0157] Figure 14 This is a diagram illustrating an example of an area where a setting lamp displays an image according to an embodiment of the present disclosure.

[0158] Reference Figure 14 The controller 1300 can designate some pixels 1045 out of all pixels 1040 as the second region. For example, the display 1200 can include all pixels 1040, and the controller 1300 can designate only some pixels 1045 out of all pixels 1040 as the second region for displaying an image. When some pixels 1045 are designated as the second region, the display 1200 can display an image using only those pixels 1045.

[0159] Despite Figure 14 Some pixels 1045 are shown as fewer than all pixels 1040, but this disclosure is not limited thereto. That is, some pixels 1045 may include the same pixels as all pixels 1040, or may include fewer pixels than all pixels 1040.

[0160] According to an embodiment, when the sensor 1100 senses an object in front of the vehicle, the controller 1300 can set the second region on the upper region of the display 1200. For example, when the object is sensed, because the image displayed on the bottom region of the display 1200 can not reach the object due to the distance between the vehicle and the object, the controller 1300 can set the upper region of the display 1200 as the second region.

[0161] In an embodiment, when the second region is set, the resolution setter 1400 can set the resolution of the image to correspond to the size of the second region. For example, the resolution setter 1400 can obtain the number of pixels in the horizontal direction and the number of pixels in the vertical direction included in the second region, and can set the resolution of the image based on the number of pixels in the horizontal direction and the number of pixels in the vertical direction.

[0162] When the resolution of the image is set, the controller 1300 can control the display 1200 so that the image for which the resolution is set is displayed on the second region of the display 1200.

[0163] Figure 15 FIG. 1 is a diagram illustrating an example in which a lamp does not detect an object in front of a vehicle according to an embodiment of the disclosure. Figure 15 The lamp 1000 of FIG. 1 can be virtually the same as Figure 12 the lamp 1000 of FIG. 1.

[0164] Referring to Figure 15 , the lamp 1000 can perform to detect an object in front of the vehicle by the sensor 1100. When the sensor 1100 does not sense the object in front of the vehicle, the controller 1300 can determine the first region with which the image is projected to be the ground 1050.

[0165] The controller 1300 can set the pixels of the display 1200, among which the light can be provided to the ground 1050, as the second region. For example, because the light from the upper region of the display 1200 does not reach the ground 1050 and the light from the lower region of the display 1200 can reach the ground 1050, the controller 1300 can set the lower region of the display 1200 as the second region.

[0166] Figure 16 FIG. 2 is a diagram illustrating an example of setting a region of a lamp displaying an image according to an embodiment of the disclosure.

[0167] Referring to Figure 16The controller 1300 can set some of the pixels 1065 among all the pixels 1060 as the second region. For example, the display 1200 can include all the pixels 1060, and the controller 1300 can set only some of the pixels 1065 among all the pixels 1060 as the second region for displaying an image. When some of the pixels 1065 are set as the second region, the display 1200 can display an image only with some of the pixels 1065.

[0168] Although some of the pixels 1065 are illustrated as being less than all the pixels 1060 in Figure 16 , the present disclosure is not limited thereto. That is, some of the pixels 1065 can include the same pixels as all the pixels 1060, or can include some pixels less than all the pixels 1060.

[0169] According to an embodiment, when the sensor 1100 does not sense an object in front of the vehicle, the controller 1300 can set the second region on a lower region of the display 1200. For example, when an object is not sensed, because an image displayed on an upper region of the display 1200 can not reach the ground, the controller 1300 can set a lower region of the display 1200 as the second region.

[0170] In an embodiment, when the first region is the ground, the second region can be a low beam region of the display 1200.

[0171] In an embodiment, when the second region is set, the resolution setter 1400 can set a resolution of an image to correspond to a size of the second region. For example, the resolution setter 1400 can obtain a horizontal number and a vertical number of pixels included in the second region, and can set a resolution of an image based on the horizontal number and the vertical number.

[0172] When the resolution of the image is set, the controller 1300 can control the display 1200 so that the image for which the resolution is set is displayed on the second region of the display 1200.

[0173] Figure 17 is a diagram illustrating an example in which a light according to an embodiment of the present disclosure performs automatic leveling. Figure 17 The light 1000 of Figure 12 may be virtually the same as the light 1000 of

[0174] Referring to Figure 17 , when the light 1000 detects an object through the sensor 1100, the light 1000 can obtain a distance to the object. The controller 1300 can calculate a region on which an image is displayed based on the distance to the object.

[0175] The driving device 1500 of the lamp 1000 can adjust an angle at which the display 1200 projects. For example, the controller 1300 can control the driving device 1500 to adjust the angle at which the display 1200 projects.

[0176] The controller 1300 can control the driving device 1500 to display the entire image on the object based on the area of the display image calculated according to the distance from the object. For example, the controller 1300 can control the driving device 1500 to perform auto leveling.

[0177] According to an embodiment, the controller 1300 can obtain a radius of rotation of the driving device 1500 in advance. Based on the radius of rotation of the driving device 1500, the controller 1300 can control the driving device 1500 to determine whether the entire image can be displayed on the object. For example, when the entire image can be displayed on the object by controlling the driving device 1500, the controller 1300 can control the driving device 1500 to adjust a projection area (a first area) of the display 1200. As another example, when the entire image cannot be displayed on the object by controlling the driving device 1500, the controller 1300 can allow an image whose resolution is set in the resolution setter 1400 to be displayed through the display 1200. In an embodiment, the entire image cannot be displayed on the object by controlling the driving device 1500, but when the resolution of the image is high, the controller 1300 can adjust the driving device 1500 to the maximum to allow a display area (a second area) of the image to be set as large as possible, to obtain an image whose resolution is set to correspond to the second area set to be as large as possible, and to allow the obtained image to be displayed through the display 1200.

[0178] Figure 18 is a diagram illustrating an example in which a lamp according to an embodiment of the disclosure performs auto leveling or changes resolution according to an image resolution. Figure 18 The lamp 1000 of Figure 12 is the same as the lamp 1000 of

[0179] Referring to Figure 18 , the controller 1300 of the lamp 1000 can identify a resolution of an image. For example, the controller 1300 can identify the resolution of the image from information of an image file.

[0180] The controller 1300 can determine whether to set (change) the resolution of the image through the resolution setter 1400 or to control the driving device 1500 based on the identified resolution of the image.

[0181] In an embodiment, when the resolution of the image is less than the number of pixels in the second region of the display 1200, the controller 1300 can increase the resolution of the image to correspond to the number of pixels in the second region of the display 1200 through the resolution setter 1400.

[0182] In an embodiment, when the resolution of the image is equal to or greater than the number of pixels in the second region of the display 1200, the controller 1300 can decrease the resolution of the image to correspond to the number of pixels in the second region through the resolution setter 1400.

[0183] In an embodiment, when the resolution of the image is equal to or greater than the number of pixels of the display 1200, the controller 1300 can control the driving device 1500 so that all regions of the display 1200 display the image. For example, the controller 1300 can control the driving device 1500 so that all regions of the display 1200 become the second region.

[0184] Figure 19 is a flowchart illustrating a method of operating a light according to an embodiment of the disclosure.

[0185] Referring to Figure 19 , the method of operating the light 1000 according to an embodiment of the disclosure can include detecting an object in front of a vehicle (S1100), determining a first region to which an image is projected based on the detected object (S1200), setting a second region of a display to display the image corresponding to the first region (S1300), and displaying the image (S1400). In an embodiment, Figure 19 The light 1000 of Figure 12 may be virtually the same as the light 1000 of

[0186] In the operation S1100 of detecting an object in front of a vehicle, the sensor 1100 can sense an object in front of the vehicle. For example, the sensor 1100 can sense whether a wall surface exists in front of the vehicle. In an embodiment, the sensor 1100 can include a distance sensing sensor or a camera. For example, the distance sensing sensor can include at least one of a laser radar sensor, a radar sensor, an infrared (IR) sensor, and a time of flight (ToF) sensor.

[0187] In the operation S1200 of determining a first region to which an image is projected based on a detected object, the controller 1300 can determine a first region to which the image is projected based on the detected object. For example, when the sensed object is a wall surface, the controller 1300 can determine the first region to be the wall surface. As another example, when the sensed object is not present, the controller 1300 can determine the first region to be the ground.

[0188] In operation S1300 of setting a second region of the display to display an image corresponding to the first region, the controller 1300 can set the second region of the display 1200 to display the image based on the determined first region. For example, when the first region is a wall surface, the controller 1300 can set the second region to display the image on the wall surface. As another example, when the first region is a wall surface, the controller 1300 can set the second region based on a distance between the wall surface and the vehicle. As another example, when the first region is a ground surface, the controller 1300 can set the second region to display the image on the ground surface.

[0189] In operation S1400 of displaying an image, the display 1200 can display the image. For example, the controller 1300 can allow the display 1200 to display the image in the set second region.

[0190] Figure 20 is a flowchart illustrating in more detail a method of operating a light according to an embodiment of the disclosure.

[0191] Referring to Figure 20 , the operating method of the light 1000 of the disclosure can further include setting a resolution of an image to correspond to a size of a second region (S2100) and adjusting a projection angle of a display (S2200). In Figure 20 , it is shown that both operations S2100 and S2200 are performed, but the disclosure is not limited thereto, and only operation S2100 can be performed, only operation S2200 can be performed, or neither of operations S2100 and S2200 can be performed.

[0192] In operation S2100 of setting a resolution of an image to correspond to a size of a second region, the resolution setter 1400 can set the resolution of the image to correspond to the size of the second region set by the controller 1300. For example, when the resolution of the image is equal to or greater than the number of pixels of the second region of the display 1200, the resolution setter 1400 can reduce the resolution of the image to correspond to the number of pixels. As another example, when the resolution of the image is less than the number of pixels of the second region of the display 1200, the resolution setter 1400 can increase the resolution of the image to correspond to the number of pixels. In an embodiment, operation S2100 can be performed after operation S1300. Figure 19

[0193] In operation S2200 of adjusting a projection angle of a display, the controller 1300 can control the driving device 1500 to adjust the projection angle of the display 1200. For example, the controller 1300 can control the driving device 1500 to adjust the projection angle of the display 1200 such that the entire region of the display 1200 becomes the second region. In an embodiment, operation S2200 can be performed after operation S1300. Figure 19 ​After operation S1300, operation S2200 is performed.

[0194] According to an embodiment of the disclosure, the light source control device can obtain an image to be displayed from the light source matrix, can change the resolution of the obtained image, and can control the operation of the light source matrix to display the image having the changed resolution.

[0195] According to an embodiment of the disclosure, the light source control device can obtain information about an obstacle in front of the vehicle, can change the resolution of the image based on the information about the obstacle, and can control the operation of the light source matrix so that the projection angle of the image is changed.

[0196] According to an embodiment of the disclosure, the light can recognize a projection surface of an image and allow the image to be accurately displayed on the recognized projection surface.

[0197] According to an embodiment of the disclosure, the light can allow the image to be accurately displayed on the projection surface of the image by changing the resolution of the image.

[0198] According to an embodiment of the disclosure, the light can allow the image to be accurately displayed on the projection surface of the image by automatic leveling of the light.

[0199] According to an embodiment of the disclosure, the light can allow the image to be accurately displayed on the projection surface of the image by determining whether to change the resolution of the image or to perform automatic leveling based on the resolution of the image.

[0200] In addition, various effects identified directly or indirectly through the present document can be provided.

[0201] The above description is merely an illustration of the technical idea of the disclosure, and those of ordinary skill in the art to which the disclosure pertains will be able to make various modifications and changes without departing from the essential characteristics of the disclosure.

[0202] Therefore, the embodiments disclosed in the disclosure are not intended to limit the technical idea of the disclosure, but are for explaining the technical idea, and the scope of the technical idea of the disclosure is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the technical solution of the disclosure, and all technical ideas within the equivalent scope thereof should be interpreted as included in the scope of the disclosure.

Claims

1. A light source control device comprising: an image acquirer configured to receive image information of an image to be projected by a light source matrix including a plurality of light sources; and a controller configured to change a first resolution of the image to a second resolution of the light source matrix based on the received image information, and to control the light source matrix to project the image having the second resolution; wherein the image information of the image includes the first resolution of the image; wherein to change the first resolution of the image to the second resolution, the controller is configured to: compare the first resolution of the image with the second resolution of the light source matrix; and when the first resolution of the image is greater than the second resolution of the light source matrix, calculate a number of pixels of the image to be projected by each light source. 2.The light source control device of claim 1, wherein the controller is configured to select the pixels of the image to be projected by each light source based on the calculated number of pixels to be displayed by each light source. 3.The light source control device of claim 2, wherein: the plurality of light sources include a first light source, and the controller is configured to: determine that the calculated number of pixels to be projected by the first light source is two or more; calculate an average of image values of the two or more pixels; and control the first light source to project the average of image values of the two or more pixels. 4.The light source control device of claim 1, wherein the controller is configured to: determine that the first resolution of the image is less than the second resolution of the light source matrix; and calculate a number of the light sources corresponding to each pixel of the image. 5.The light source control device of claim 4, wherein the controller is configured to: match each pixel of the image with each light source according to the calculated number of the light sources corresponding to each pixel of the image; and control each light source to project an image value representing one or more pixels matched with the light source. 6.A vehicle including the light source control device of claim 1, further comprising a sensor configured to detect an obstacle in front of the vehicle and to generate obstacle information of the detected obstacle, wherein the controller is configured to change the first resolution of the image further based on the obstacle information. 7.The vehicle of claim 6, wherein the controller is configured to: calculate a distance of the image to be projected by the light source matrix according to the obstacle information; and change the first resolution of the image further based on the calculated distance. 8.A lamp including the light source control device of claim 1, comprising: a sensor configured to sense an object in front of a vehicle and to generate sensing data indicative of the sensed object; a display configured to project an image; and a controller configured to: (1) determine an area in front of the vehicle to which the image is to be projected based on the sensing data, and (2) select a portion of the display for projecting the image to the determined area in front of the vehicle. ​ 9. The lamp of claim 8, wherein the controller is configured to determine whether an area in front of the vehicle is a wall or a ground based on the sensing data.

10. The lamp of claim 9, wherein the controller is configured to control the display to project the image from a selected portion of the display onto the wall when the determined area in front of the vehicle is the wall.

11. The lamp of claim 9, wherein the controller is configured to select the portion of the display based on a distance between the wall and the vehicle when the determined area in front of the vehicle is the wall.

12. The lamp of claim 9, wherein the controller is configured to control the display to project the image from a selected portion of the display onto the ground when the determined area in front of the vehicle is the ground.

13. The lamp of claim 12, wherein the selected portion of the display comprises a low beam area.

14. The lamp of claim 8, further comprising a resolution setter configured to set a resolution of the image to correspond to a size of the selected portion of the display.

15. The lamp of claim 14, wherein the resolution setter is configured to decrease the resolution of the image when the resolution of the image is greater than a number of pixels in the selected portion of the display.

16. The lamp of claim 14, wherein the resolution setter is configured to increase the resolution of the image when the resolution of the image is less than the number of pixels in the selected portion of the display.

17. The lamp of claim 8, further comprising a driving device configured to adjust a projection angle of the display.

18. The lamp of claim 17, wherein the controller is configured to control the driving device such that the image is projected from an entire area of the display when the resolution of the image is greater than a number of pixels of the display.

Images