Rear-view mirror using navigation information and control method thereof

Abstract

According to the present invention, a digital rear-view mirror installed in a vehicle receives navigation information from a navigation device also installed in the vehicle, and an operation of the digital rear-view mirror is controlled using the navigation information, whereby convenience of a driver can be increased. Specifically, the rear-view mirror according to a preferred embodiment of the present invention: when a vehicle enters within a first threshold distance from a main point (branch point, intersection, or entry / exit lamp) where the direction of the vehicle needs to be changed from navigation information, switches to a wide-angle display mode and displays a rear-view image to a driver at a wide angle on a display included in the rear-view mirror; and when the driver turns on a turn signal lamp, identifies whether a vehicle is detected behind in a corresponding direction and displays the detected vehicle on the display, so that even though the driver does not manually switch the display mode one by one in a situation where a lane change is required by approaching the main point, a display screen is automatically and dynamically switched according to the situation, thereby enabling the driver to more conveniently identify a rear situation of the vehicle and an approaching rear vehicle.

Description

Rear-view mirror using navigation information and method for controlling the same

[0001] The present invention relates to a rear-view mirror, and more specifically, to a rear-view mirror that utilizes navigation information of a vehicle and a method for controlling the same.

[0002] Generally, vehicles are equipped with a rear-view mirror inside the cabin to allow observation of the rear of the vehicle. Conventional rear-view mirrors are limited in their functionality to simply displaying the rear view of the vehicle, and it is difficult to clearly see the rear of the vehicle when dust or snow accumulates on the rear window.

[0003] Another conventional technology to solve these problems has proposed a digital rear-view mirror. A digital rear-view mirror installs a digital camera at the rear of the vehicle to photograph the rear of the vehicle, and by outputting the image captured by the digital camera to a display included in the digital rear-view mirror, it can provide the driver with the situation behind the vehicle regardless of the condition of the vehicle's rear window.

[0004] However, these conventional technologies had limitations in that they merely displayed the rear situation of the vehicle and could not provide any useful functions beyond that.

[0005] The problem that the present invention aims to solve is to provide a rear-view mirror utilizing navigation information and a method for controlling the same, which can display various information on the display of a digital rear-view mirror using navigation information installed in a vehicle.

[0006] A rear-view mirror utilizing navigation information according to a preferred embodiment of the present invention for solving the above-described problem comprises: a camera module including a rear camera that photographs the rear of a vehicle; a display module that outputs an image; a mirror module installed in front of the display module that adjusts reflectivity and transmittance according to a control signal; and a circuit unit including a processor, a memory, and a communication module. The processor performs the following steps: (a) operating the rear-view mirror in a mirror mode or a display mode according to a user's setting; (b) using navigation information input from the outside to check whether the vehicle is located within a first threshold distance from a key point, and if it is within the first threshold distance, switching the display mode to a wide-angle display mode to output a rear image input from the rear camera through the display; (c) displaying the detected vehicle on the display when the vehicle is detected in the rear image; and (e) using the navigation information to check whether the vehicle passes the key point, and if it passes the key point, switching the display mode of the rear-view mirror back to the display mode operated in step (a).

[0007] Additionally, in step (c) above, when the vehicle's turn signal is illuminated, the processor checks the rear image to see if a vehicle is detected in the rear direction corresponding to the turn signal, and if a vehicle is detected, the vehicle in the rear image can be displayed on the display.

[0008] Additionally, in step (c) above, the processor may divide the display screen of the display to display an enlarged view of the detected vehicle on the side corresponding to the direction of the turn signal, and display a rear view with a normal field of view in the remaining area.

[0009] Additionally, the camera module further includes a left-side camera that captures the left rear of the vehicle and outputs a left-rear image, and a right-side camera that captures the right rear of the vehicle and outputs a right-rear image. The processor checks whether a vehicle is detected in the left-rear image or the right-rear image corresponding to the direction of the turn signal in step (c), and if a vehicle is detected, it can enlarge the vehicle in the left-rear image or the right-rear image and display it in the area corresponding to the direction among the divided display screen areas of the display, and display the rear image in the remaining area.

[0010] Additionally, the processor may further perform the step of (d) using the navigation information to determine whether the vehicle is located within a second threshold distance closer than the first threshold distance from the main point, and if it is located within the second threshold distance, integrating the rear image into the display screen of the split display and outputting it, and maintaining the display mode in a wide-angle mode.

[0011] In addition, the above navigation information may include location information of the vehicle and location information of key points, or distance information from the vehicle to key points.

[0012] Meanwhile, a control method for a rear-view mirror according to a preferred embodiment of the present invention for solving the above-mentioned problem comprises: a camera module including a rear camera that captures the rear of a vehicle; a display module that outputs an image; a mirror module installed in front of the display module that adjusts reflectivity and transmittance according to a control signal; and a circuit unit including a processor, a memory, and a communication module, comprising: (a) a step of operating the rear-view mirror in a mirror mode or a display mode according to a user's setting; (b) a step of checking whether the vehicle is located within a first threshold distance from a key point using navigation information input from the outside, and if it is within the first threshold distance, switching the display mode to a wide-angle display mode to output a rear image input from the rear camera through the display; (c) a step of displaying the detected vehicle on the display when the vehicle is detected in the rear image; and (e) a step of checking whether the vehicle passes the key point using the navigation information, and if it passes the key point, switching the display mode of the rear-view mirror back to the display mode operated in step (a).

[0013] Additionally, in step (c), when the vehicle's turn signal is illuminated, the rear image is checked to see if a vehicle is detected in the rear direction corresponding to the turn signal, and if a vehicle is detected, the vehicle in the rear image can be displayed on the display.

[0014] Additionally, step (c) above can divide the display screen of the display to display an enlarged view of the detected vehicle on the side corresponding to the direction signal, and display a rear view with a normal field of view in the remaining area.

[0015] Additionally, the camera module further includes a left-side camera that captures the left rear of the vehicle and outputs a left-rear image, and a right-side camera that captures the right rear of the vehicle and outputs a right-rear image. Step (c) checks whether a vehicle is detected in the left-rear image or the right-rear image corresponding to the direction of the turn signal, and if a vehicle is detected, the vehicle in the corresponding left-rear image or right-rear image is magnified and displayed in the area corresponding to the direction among the divided display screen areas of the display, and the rear image is displayed in the remaining area.

[0016] In addition, a method for controlling a rear-view mirror according to another preferred embodiment of the present invention may further include the step of (d) using the navigation information to determine whether the vehicle is located within a second threshold distance closer than the first threshold distance from a key point, and if it is located within the second threshold distance, integrating the rear image into the display screen of the divided display and outputting it, and maintaining the display mode in a wide-angle mode.

[0017] In addition, the above navigation information may include location information of the vehicle and location information of key points, or distance information from the vehicle to key points.

[0018] The present invention enhances driver convenience by having a digital rear-view mirror installed in a vehicle receive navigation information from a navigation device also installed in the vehicle and control its operation using the navigation information.

[0019] Specifically, a rear-view mirror according to a preferred embodiment of the present invention switches to a wide-angle display mode when entering within a first threshold distance from a major point (junction, intersection, entrance / exit ramp) where the vehicle's direction needs to be changed from navigation information, and displays a rear image to the driver in a wide angle on a display included in the rear-view mirror. When the driver turns on the turn signal, it checks whether a vehicle is detected in the rear of the corresponding direction and displays the detected vehicle on the display. This allows the driver to more conveniently identify the rear situation of the vehicle and approaching rear vehicles by automatically and dynamically switching the display screen according to the situation, without the driver having to manually switch the display mode one by one when approaching a major point where a lane change is necessary.

[0020] FIG. 1a is a block diagram illustrating the configuration of a digital rear-view mirror according to a preferred embodiment of the present invention, and FIG. 1b is a drawing explaining the external configuration of a digital rear-view mirror according to a preferred embodiment of the present invention.

[0021] FIG. 2 is a diagram illustrating the operation concept of a rear-view mirror according to a preferred embodiment of the present invention.

[0022] FIG. 3 is a flowchart illustrating a method for controlling a rear-view mirror according to a preferred embodiment of the present invention.

[0023] Figure 4 is a diagram illustrating an example of a rear view image and the range displayed on the display in normal viewing angle display mode and wide angle display mode.

[0024] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[0025] Hereinafter, the aforementioned objects, features, and advantages of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings. However, as the present invention is subject to various modifications and may have various embodiments, specific embodiments are illustrated in the drawings and described in detail below.

[0026] Throughout the specification, identical reference numbers indicate identical components in principle. Additionally, components with identical functions within the scope of the same concept appearing in the drawings of each embodiment are described using the same reference numeral.

[0027] When a part of a specification is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Furthermore, terms such as "...part" or "module" as used in the specification refer to a unit that processes at least one function or operation, and this may be implemented in hardware or software, or as a combination of hardware and software.

[0028] If it is determined that a detailed description of known functions or configurations related to the present invention may unnecessarily obscure the essence of the present invention, such detailed description is omitted. Additionally, numbers used in the description of this specification (e.g., 1st, 2nd, etc.) are merely identification symbols to distinguish one component from another.

[0029]

[0030] FIG. 1a is a block diagram illustrating the configuration of a digital rear-view mirror according to a preferred embodiment of the present invention, and FIG. 1b is a drawing explaining the external configuration of a digital rear-view mirror according to a preferred embodiment of the present invention.

[0031] Referring to FIG. 1a and FIG. 1b, a rear-view mirror (100) (hereinafter abbreviated as 'rear-view mirror') utilizing navigation information according to a preferred embodiment of the present invention includes a camera module (110), a mirror module (140), a display (130), and a circuit unit (120). The circuit unit (120) includes a processor (121), a memory (123), and a communication module (125). The camera module (110) basically includes a rear camera (111) and may additionally include a left-side camera (115) and a right-side camera (117) as needed.

[0032] The mirror module (140), display (130), and circuit (120) are included in the rear-view mirror housing (190) and installed near the front windshield of the vehicle interior.

[0033] The rear camera (111) is installed on the exterior rear of the vehicle, captures the rear of the vehicle to generate a rear image, and transmits the rear image to the processor (121). The rear camera (111) may be used to have a shooting angle of 120 degrees or more so that blind spots can be captured. In particular, if the left side camera (115) and the right side camera (117) are not installed, it is preferable that the rear camera (111) be installed as a camera having a field of view of 180 degrees.

[0034] The left side camera (115) is installed on the left side of the vehicle to photograph the rear of the left side of the vehicle to generate a left rear image and outputs the left rear image to the processor (121). Additionally, the right side camera (117) is installed on the right side of the vehicle to photograph the rear of the right side of the vehicle to generate a right rear image and outputs it to the processor (121).

[0035] The left side camera (115) and the right side camera (117) can be optionally installed, and when the left side camera (115) and the right side camera (117) are installed, they are each installed on the left and right side mirrors, but the installation positions can be changed.

[0036] The display (130) can be implemented as an LCD module, an OLED module, etc., and is turned on / off according to the control of the processor (121), and outputs a video signal generated by the processor (121).

[0037] The mirror module (140) contains an EC (Electronic Chromic) film inside and is positioned in front of the display (130). Under the control of the processor (121), the reflectivity and transmittance of the EC film contained in the mirror module (140) are adjusted, and accordingly, the mirror module (140) performs the role of a reflector or transmits an image displayed on the display (130) so that the driver and passengers can see the image on the display (130).

[0038] The memory (123) is implemented as an SSD (Solid State Drive), flash memory, ROM (Read-Only Memory), RAM (Random Access Memory), etc., and stores instructions to be executed by the processor (121) and data processed by the processor (121). In addition, the memory (123) can store a rear view, a left rear view, and a right rear view.

[0039] The processor (121) can be implemented as a CPU (Central Processing Unit) or a similar device (e.g., MPU (Micro Processing Unit), MCU (Micro Control Unit), etc.) and controls the display (130) and mirror module (140) by executing instructions stored in memory (123), processes the rear image, left rear image, and right rear image to generate an image to be output to the display (130), and outputs the generated image through the display (130).

[0040] In addition, the processor (121) determines the distance between a major point (intersection, road junction, etc.) and the current vehicle using navigation information input through the communication module (125), and controls the operation of the rear-view mirror according to the location of the major point (intersection, road junction, etc.). The specific details of the control will be described later.

[0041] The communication module (125) communicates with the vehicle's main controller (200) to receive information related to vehicle control from the vehicle's main controller (200) and output it to the processor (121). Additionally, the communication module (125) communicates with the navigation device (300) installed in the vehicle to receive navigation information from the navigation device (300) and output it to the processor (121). At this time, the navigation information may include location information of major points (intersections, road junctions, etc.) and the current vehicle's location information, and may also include distance information between the major points (intersections, road junctions, etc.) and the current vehicle.

[0042]

[0043] FIG. 2 is a diagram illustrating the operation concept of a rear-view mirror according to a preferred embodiment of the present invention, and FIG. 3 is a flowchart illustrating a method for controlling a rear-view mirror according to a preferred embodiment of the present invention.

[0044] Hereinafter, with further reference to FIGS. 2 and 3, the functions of each component of the rear-view mirror according to a preferred embodiment of the present invention and the method for controlling the rear-view mirror will be explained in more detail.

[0045] First, while the vehicle is in motion, the processor (121) operates in either mirror mode or display mode according to the user's settings (S311).

[0046] The user can switch between mirror mode and display mode by pressing a button (not shown) installed on the housing, and the last mode is stored in memory (123) as setting information. In addition, when power is supplied again, the processor (121) operates in either display mode or mirror mode according to the setting information stored in memory (123).

[0047] In display mode, the processor (121) turns on the display (130) and increases the transmittance of the EC film included in the mirror module (140) above a threshold so that an image output from the display (130) is displayed to the user. At this time, an image captured by the rear camera (111) is output through the display (130). When the position of the vehicle is before the first threshold distance described later, the display (130) displays the rear image with a normal field of view.

[0048] In mirror mode, the processor (121) turns off the display (130), lowers the transmittance of the EC film included in the mirror module (140) below a threshold, and increases the reflectivity so that the rear view is reflected and displayed to the user.

[0049] Next, the processor (121) receives navigation information directly from the navigation device (300) through the communication module (125) or receives navigation information through the vehicle's main controller (200) (S313).

[0050] Navigation information may include location information of major points and the current vehicle's location information, and may also include the distance between the major points and the current vehicle's location. Here, major points include intersections, road junctions, highway ramps, etc., where a moving vehicle must change direction, such as by making a left turn, a right turn, or a U-turn.

[0051] When navigation information is input, the processor (121) checks whether the current vehicle's location is within a first threshold distance from a major point (S321).

[0052] In a preferred embodiment of the present invention, the first threshold distance is set to 500M, but the first threshold distance may be set to a different value depending on the implementation environment. Additionally, when the processor (121) receives location information of a major point and location information of the current vehicle as navigation information, it calculates the distance from the major point to the current vehicle and compares it with the first threshold distance, and when it receives the distance between the major point and the current vehicle's location as navigation information, it compares the received distance with the first threshold distance. Below, an example is provided where the first threshold distance is set to 500M.

[0053] When the vehicle comes within a first critical distance (500M) from a key point, the processor (121) switches the display mode of the rear-view mirror to a wide-angle display mode (S323).

[0054] In the above-described step S311, the processor (121) operates the display mode as either a mirror mode or a display mode according to the user's settings. When operating in display mode, the display mode is displayed with a normal field of view. However, when the vehicle enters within the first threshold section, the display mode is switched to a wide-angle display mode so that the vehicle on the left and right rear is visible, as the vehicle must change lanes. That is, the processor (121) switches from mirror mode to wide-angle display mode or switches from normal field of view display mode to wide-angle display mode.

[0055]

[0056] FIG. 4 is a drawing illustrating an example of a rear view image and the range displayed on the display (130) in a normal viewing angle display mode and a wide angle display mode.

[0057] Referring to FIG. 4, in a preferred embodiment of the present invention, the rear camera (111) uses a wide-angle camera, so as shown in FIG. 4, the rear image captured and generated by the rear camera contains a large amount of rear view. However, if the entire rear image is displayed through a narrow space display (130), the vehicles displayed in the rear image are displayed too small, making it difficult for the driver to recognize objects in the rear.

[0058] Accordingly, the processor (121) of the present invention displays a rear view on a display (130) in a normal field of view (A) before the section where the vehicle changes lanes to pass through a major point (i.e., before entering the first critical distance), so that the driver can more clearly perceive the situation occurring behind the vehicle (so that the object appears relatively large) if possible.

[0059] After that, in the section where the vehicle mainly changes lanes (between the first threshold distance and the second threshold distance), the rear image is displayed on the display (130) with a wide angle (B) so that the vehicle driving on the left and right sides of the rear can be seen, even if the displayed object appears somewhat small.

[0060] After switching to wide-angle display mode, the processor (121) checks whether a turn signal is input from the vehicle's main controller (200) (S325), and if the turn signal is confirmed, it checks whether a vehicle is detected by applying an object recognition algorithm to a predetermined area of ​​the corresponding direction in the rear image (S327). That is, when the turn signal is illuminated, it detects a following vehicle that is at risk of contact when changing lanes in the rear (left rear or right rear) of the direction in which the lane is to be changed.

[0061] If a vehicle is detected, the processor (121) divides the display screen area of ​​the display (130), displays the detected vehicle in the rear view enlarged on one side corresponding to the direction in which the detected vehicle is located, and displays the rear view with a normal field of view on the remaining area (S329).

[0062] After that, the processor (121) checks whether the vehicle's location is within a second threshold distance from a major point using navigation information that is directly input from the navigation device (300) or input from the vehicle's main controller (200) (S331). In a preferred embodiment of the present invention, the second threshold distance is set to 200M, but this can be changed depending on the implementation environment.

[0063] If the vehicle's position is still between the first threshold distance and the second threshold distance, proceed to step S325, and if the vehicle's position is within the second threshold distance from the main point, switch the display mode back to wide-angle mode (S333).

[0064] Since the second threshold distance is generally a section where the vehicle travels in a straight line after the lane is changed, in a preferred embodiment of the present invention, the screen splitting is stopped so that the driver can check the overall situation behind the vehicle after the lane is changed, and a rear image in wide-angle mode is displayed through the display (130).

[0065] After that, the processor (121) checks whether the vehicle has passed a major point using navigation information (S341), and if the vehicle has passed a major point, switches the display mode of the rear-view mirror back to the original display mode (S343). That is, if it was in mirror mode at step S311, the processor (121) turns off the display (130), lowers the transmittance of the mirror module (140), and increases the reflectivity so that the rear view is reflected from the mirror module (140) and shown to the driver. Also, if it was in display mode at step S311, the processor (121) outputs the rear image that was displayed in wide angle to the display (130) in a normal angle of view (A).

[0066] Up to now, a rear-view mirror utilizing navigation information and a method for controlling the same according to a preferred embodiment of the present invention have been described. In the above-described embodiment, the camera module (110) was described as using only a rear camera, but it was previously described that the camera module (110) may further include a left-side camera (115) and a right-side camera (117).

[0067] In this case, if it is confirmed that the turn signal is illuminated in step S325, the processor (121) drives the left side camera or the right side camera corresponding to the turn signal to detect a vehicle located on the left or right side of the rear from the side image input from the camera (S327), and outputs and displays the image captured by the side camera and the image captured by the rear camera on a divided screen (S329).

[0068]

[0069] The method for controlling a rear-view mirror using navigation information according to the preferred embodiment of the present invention described so far can be implemented as a computer program that is implemented as a computer-executable instruction and stored in a non-transient storage medium.

[0070] Storage media include all types of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable storage media include ROM, RAM, CD-ROM, and optical data storage devices. Additionally, computer-readable storage media are distributed across networked computer systems, allowing computer-readable code to be stored and executed in a distributed manner.

[0071] The present invention has been described above with reference to its preferred embodiments. Those skilled in the art will understand that the present invention may be embodied in modified forms without departing from the essential characteristics of the invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the invention is defined by the claims, not by the foregoing description, and all variations within the scope of the claims should be interpreted as being included in the invention.

Claims

1. A camera module including a rear camera that photographs the rear of a vehicle; A display module that outputs an image; A mirror module installed in front of the above-mentioned display module, which adjusts reflectivity and transmittance according to a control signal; and It includes a circuit section comprising a processor, memory, and communication modules, and The above processor (a) A step of operating the rear-view mirror in mirror mode or display mode according to the user's settings; (b) using navigation information input from an external source to determine whether the vehicle is located within a first threshold distance from a key point, and if it is within the first threshold distance, switching the display mode to a wide-angle display mode to output a rear image input from the rear camera through the display; (c) a step of displaying the detected vehicle on the display when a vehicle is detected in the rear image; and (e) a step of using the above navigation information to check whether the vehicle passes through a major point, and if it passes through a major point, switching the display mode of the rear-view mirror back to the display mode that was operated in step (a); characterized by performing the step of using navigation information.

2. In Paragraph 1, In step (c) above, the processor A rear-view mirror utilizing navigation information, characterized by checking in the rear image whether a vehicle is detected in the rear direction corresponding to the turn signal when the vehicle's turn signal is illuminated, and displaying the vehicle in the rear image on the display if a vehicle is detected.

3. In Paragraph 2, In step (c) above, the processor A rear-view mirror utilizing navigation information, characterized by dividing the display screen of the above-mentioned display to enlarge and display a detected vehicle on the side corresponding to the direction of the turn signal, and displaying a rear image at a normal viewing angle in the remaining area.

4. In Paragraph 3, The above camera module further includes a left side camera that captures the left rear of the vehicle and outputs a left rear image, and a right side camera that captures the right rear of the vehicle and outputs a right rear image. A rear-view mirror utilizing navigation information, characterized in that the processor checks whether a vehicle is detected in the left rear image or right rear image corresponding to the direction signal in step (c), and if a vehicle is detected, zooms in on the vehicle in the left rear image or right rear image and displays it in the area corresponding to the direction among the divided display screen areas of the display, and displays the rear image in the remaining area.

5. In claim 3, the processor (d) A rear-view mirror using navigation information, characterized by further performing the step of using the above navigation information to determine whether the vehicle is located within a second threshold distance closer than the first threshold distance from a key point, and if it is located within the second threshold distance, integrating the rear image into the display screen of the split display and outputting it, and maintaining the display mode in a wide-angle mode.

6. In Paragraph 1, A rear-view mirror utilizing navigation information characterized in that the above navigation information includes location information of a vehicle and location information of a major point, or distance information from the vehicle to a major point.

7. A method for controlling a rear-view mirror comprising: a camera module including a rear camera for photographing the rear of a vehicle; a display module for outputting an image; a mirror module installed in front of the display module for adjusting reflectivity and transmittance according to a control signal; and a circuit unit including a processor, a memory, and a communication module. (a) A step of operating the rear-view mirror in mirror mode or display mode according to the user's settings; (b) using navigation information input from an external source to determine whether the vehicle is located within a first threshold distance from a key point, and if it is within the first threshold distance, switching the display mode to a wide-angle display mode to output a rear image input from the rear camera through the display; (c) a step of displaying the detected vehicle on the display when a vehicle is detected in the rear image; and (e) a step of using the above navigation information to check whether the vehicle passes through a major point, and if it passes through a major point, switching the display mode of the rear-view mirror back to the display mode that was operated in step (a); characterized by including the method of controlling a rear-view mirror using navigation information.

8. In claim 7, the above step (c) A method for controlling a rear-view mirror using navigation information, characterized by checking whether a vehicle is detected in the rear image in the direction corresponding to the turn signal when the vehicle's turn signal is illuminated, and displaying the vehicle in the rear image on the display if a vehicle is detected.

9. In claim 8, the above step (c) A method for controlling a rear-view mirror using navigation information, characterized by dividing the display screen of the above-mentioned display to enlarge and display a detected vehicle on the side corresponding to the direction of the turn signal, and displaying a rear image with a normal field of view in the remaining area.

10. In Paragraph 9, The above camera module further includes a left side camera that captures the left rear of the vehicle and outputs a left rear image, and a right side camera that captures the right rear of the vehicle and outputs a right rear image. The above step (c) is, A method for controlling a rear-view mirror using navigation information, characterized by checking whether a vehicle is detected in a left rear-view image or a right rear-view image corresponding to the direction of a turn signal, and if a vehicle is detected, magnifying the vehicle in the left rear-view image or the right rear-view image and displaying it in the area corresponding to the direction among the divided display screen areas of the display, and displaying a rear-view image in the remaining area.

11. In Paragraph 9, (d) A method for controlling a rear-view mirror using navigation information, further comprising the step of using the navigation information to determine whether the vehicle is located within a second threshold distance closer than the first threshold distance from a key point, and if it is located within the second threshold distance, integrating the rear image into the display screen of the split display and outputting it, and maintaining the display mode in a wide-angle mode.

12. In Paragraph 7, A method for controlling a rear-view mirror using navigation information, characterized in that the above navigation information includes location information of a vehicle and location information of a key point, or distance information from the vehicle to a key point.

13. A non-transient recording medium that records the method for controlling a rear-view mirror according to claim 7 as computer-readable and computer-executable program code.

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