KR102290802B1 - System for estimating value electronic device - Google Patents

Abstract

An electronic device valuation system is disclosed. In one embodiment, a display, a body in which the electronic device is placed, a camera for photographing the electronic device using lights, and the value of the electronic device determined based on an appearance inspection result of the electronic device and a performance test result of the electronic device and a controller for displaying on the display. In this case, the appearance inspection result is based on an image captured by the camera of the electronic device. In addition, the lights output light, but some lights output light of different wavelengths so as not to cancel diffuse reflection of the appearance defect of the electronic device.

Description

Electronic device valuation system {SYSTEM FOR ESTIMATING VALUE ELECTRONIC DEVICE}

The present invention relates to an exterior photographing analysis system for evaluating the value of an electronic device, which photographs the exterior of the electronic device in order to evaluate the value of the electronic device, and analyzes the photographed image, and in particular, interference fringes or cancellation due to light interference By preventing the reduction phenomenon, it is possible to analyze the appearance of electronic devices more accurately, and by using a multi-wavelength light source that eliminates unnecessary evaluation steps by first evaluating the upper items with high weight and not evaluating the lower items according to the results. It relates to an exterior photographing analysis system for evaluating the value of an electronic device to be photographed.

Terminals such as smartphones, tablet PCs, and laptops are expensive products as a collection of the latest technologies.

Therefore, interest and demand for expensive electronic devices are increasing, and transactions are actively conducted.

In the case of electronic devices, internal functions are important, but the external appearance is evaluated as the most important factor in the value evaluation of electronic devices (smartphones, tablet PCs, etc.).

The biggest part of the exterior is the screen (display), which occupies the largest area, and the button that functions as a key. In particular, dents, scratches, and cracks on the exterior are the main items, and it is the most important thing to check and classify them.

The value of an electronic device, that is, its price, is evaluated by examining its condition. The state inspection of the electronic device is mainly performed by a human, which makes it difficult to guarantee objectivity in the valuation (ie, pricing) of the electronic device. That is, with the same electronic device, the value evaluation may vary depending on the skill, condition, standard, etc. of the inspector, and if the price of the electronic device is low, the owner also has low reliability of the evaluation by the inspector.

Also, there is a disadvantage in that the inspection of the electronic device by the inspector is slow.

Therefore, as a prior art that can ensure objectivity by automating the valuation of electronic devices, Patent Publication No. 10-2017-0019085 "Method and Apparatus for Automatic Valuation of Used Mobile Terminals" has been disclosed.

The Patent Publication No. 10-2017-0019085 discloses that a camera set captures a second-hand mobile terminal placed inside an automatic valuation device, and analyzes the photographed image to obtain the case, bezel, tempered glass, screen, etc. of the used mobile terminal. The appearance condition is automatically inspected.

When analyzing the appearance state of a used mobile terminal with an image, the shooting environment of the used mobile terminal, that is, the location of lighting, irradiation angle, wavelength (color temperature), brightness, and viewing angle of the camera, is very important.

However, in Patent Publication No. 10-2017-0019085, the reliability of value evaluation of used mobile terminals is low due to neglect of such a shooting environment.

If the light source of the lighting unit that illuminates the electronic device is reflected on the surface of the electronic device and appears in the image of the camera, the electronic device cannot determine the state of that part, and the scattering part of the terminal (usually damaged by deformation) depending on the irradiation angle of the light source. ) of the scattering intensity is different.

So, when photographing an electronic device, the light source illuminates it from several directions at the same time and photographing is performed by changing the irradiation angle.

At this time, if the wavelengths (ie, color temperature) of the light sources simultaneously illuminating are the same, a phenomenon such as destructive interference of the interference fringes occurs due to the interference of the light, which prevents the analysis of the appearance state of the electronic device through the image.

Therefore, it is necessary to prevent the interference phenomenon of the light source illuminating the electronic device, but the prior art does not take this into consideration.

Valuation of electronic devices is performed for various items, and if the defective condition of some items is severe, the purchase is not made or the maximum deducted amount becomes the maximum deducted amount, so there is no need to evaluate other items.

However, the prior art is a method of determining whether to purchase the electronic device and the purchase amount after evaluating all items, which wastes a lot of time and money.

An electronic device valuation system according to one side includes a display; a body in which the electronic device is placed; a camera for photographing the electronic device using lights; and a controller configured to display, on the display, a value of the electronic device determined based on an appearance test result of the electronic device and a performance test result of the electronic device.

The lights output light, but some lights output light of different wavelengths so as not to cancel the diffuse reflection of the external defect of the electronic device.

Among the lights, the other lights may output light of the same wavelength or may output light of different wavelengths.

A distance between some of the lights may be shorter than a distance between the other lights.

A first light among the lights is located on a first surface inside the main body, a second light among the lights is located on a second surface facing the first surface, and a third light among the lights is located on the main body It is located on the third surface of the interior, and the fourth light among the lights may be located on the fourth surface facing the third surface.

The first illumination and the second illumination may output the light of the different wavelengths.

The first illumination and the second illumination may output light at a first irradiation angle, and the third illumination and the fourth illumination may output light at a second irradiation angle.

The appearance defect may include a defect in the display of the electronic device.

The external imaging analysis system for evaluating the value of an electronic device photographed using a multi-wavelength light source according to the present invention varies the wavelength (color temperature) of the light source that irradiates the electronic device from different angles at the same time to obtain an interference pattern or It is possible to more accurately analyze the appearance of the electronic device by preventing the offset reduction phenomenon.

1 is a schematic block diagram of an appearance photographing analysis system for evaluating the value of an electronic device according to the present invention;
Figures 2a to 2c is a view showing an example of the camera unit and the lighting unit provided in the dark room of the housing according to the present invention.
3aa to 3b are views showing the positional relationship between the camera unit and the lighting unit for photographing the upper surface of the electronic device.
4 is a view showing a positional relationship between a camera unit and a lighting unit for photographing a side state of an electronic device;
5 is a view showing the positional relationship between the camera unit and the lighting unit for photographing the state of the lower surface of the electronic device.
6 is a view showing a positional relationship between a camera unit and a lighting unit for photographing a state of a screen disposed on an upper surface of an electronic device;
7A to 7D are views illustrating a relationship between a viewing angle of a camera for photographing an entire electronic device and a photographing position thereof;
8A to 8C are diagrams illustrating a structure in which one camera simultaneously photographs multiple surfaces of an electronic device using a reflective mirror;
9 is a flowchart showing a process of initializing by deleting data of an electronic device purchased through value evaluation;

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

The terms used in the examples are used for description purposes only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In the description of the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

Components included in one embodiment and components having a common function will be described using the same names in other embodiments. Unless otherwise stated, a description described in one embodiment may be applied to another embodiment, and a detailed description in the overlapping range will be omitted.

As shown in Figs. 1 and 2, the exterior photographing analysis system for evaluating the value of an electronic device photographed using a multi-wavelength light source according to the present invention includes a main body 10, a camera unit 20, a lighting unit 30, The controller 50 and the like are included. The appearance photographing analysis system may be expressed differently as an electronic device value evaluation system and an electronic device purchase system.

Although not shown in FIG. 1 , the external capture analysis system may further include a display (eg, a touch display). As will be described later, the controller 50 may display the value of the electronic device (eg, the purchase price of the electronic device) on the display.

The electronic device may correspond to, for example, a used mobile terminal, but is not limited thereto.

Such an exterior photographing analysis system according to the present invention is provided in a kiosk installed in the field to purchase an electronic device (M) unattended, and communicates with a central control center (not shown) through an Internet communication network to transmit and receive various data. .

The main body 10 provides a dark room 11 in which the electronic device M is placed and external factors are blocked in the photographing environment.

In the dark room 11 of the main body 10 , a seating plate 13 on which the electronic device M is mounted and placed is horizontally disposed across the middle portion of the dark room 11 .

In the darkroom 11, the camera unit 20 for photographing the upper surface, the lower surface and the side surface of the electronic device M placed on the seating plate 13, the lighting unit 30 for illuminating, and power to the electronic device M and a cable (not shown) drawn out from the controller 50 to control the image displayed on the screen. In addition, in the darkroom 11, a moving unit 40 that moves the position of the electronic device M by rotating the seat plate 13 or pushing or pulling the electronic device M, and a camera unit so that the shooting direction of the camera is adjusted Another moving unit 40 for moving the position of 20 may be further provided.

The controller 50 controls the driving of the camera unit 20 and the lighting unit 30, etc. so that an optimal shooting environment is provided in the dark room 11 of the main body 10, and The value is evaluated by analyzing the state of the electronic device (M) through the image.

The controller 50 includes a driving control unit that provides an optimal shooting environment. The driving control unit includes a camera driving unit 51 for controlling the driving of the camera unit 20, a lighting driving unit 52 for controlling the driving of the lighting unit 30, and an electronic device for controlling the driving of the electronic device M ( M) includes a driving unit 53, a moving unit driving unit 54 for controlling the driving of the moving unit 40 to adjust the shooting direction by moving the position of the electronic device (M) or the position of the camera. In addition, the controller 50 includes an image processing unit 55 for pre-processing and compressing the image photographed by the camera unit 20, an image storage unit 56 for storing the image processed by the image processing unit 55, and the An image analysis unit 57 that retrieves and analyzes the image stored in the image storage unit 56, and a performance inspection unit ( 61), an artificial intelligence algorithm unit 58 that evaluates the value of the electronic device M using the inspection result of the performance inspection unit 61 and the analysis result of the image analysis unit 57, communicating with the central control center communication unit (59). and a data deletion module 62 and the like for initializing and deleting data in the memory of the electronic device M purchased through value evaluation.

The evaluation items for which the artificial intelligence algorithm unit 58 evaluates the value are composed of independent items that are not correlated (or less), and each independent item includes several dependent items.

Examples of classification of independent items include 'case', 'bezel', 'tempered glass' about the external state of the electronic device (M), 'display module', 'charging module', 'communication module' about the performance of internal parts, It can be divided into 'camera', etc.

As an independent item, examples of classification of subordinate items related to 'tempered glass' may be classified into 'scratch', 'crack', 'break', 'gap', and the like.

Each of the independent items and the dependent items is given a weight, and the artificial intelligence algorithm unit first evaluates the values of the independent items and the dependent items having a high weight. Here, the item to be evaluated first means an item with a high weight among items that can be evaluated using the test result obtained from the performance test unit or the segmentation result obtained from the image analysis unit, and the test result is still the analysis result. It will be said that it does not mean items with high value, including items that have not been acquired and cannot be evaluated.

The value evaluated in each item has a grade, and the electronic device (M) is not purchased or the amount deducted from the purchase amount varies depending on the grade.

As for the weight of each item, the weight of the item that will not be purchased when defective will be higher, and the item with a larger amount of deduction will have the next highest weight even if it is purchased.

The artificial intelligence algorithm unit 58 evaluates the value of the electronic device M in the order of the items with the highest weight,

If an item whose evaluated value (that is, the degree of defect) cannot be repaired or the repair cost is too high that the electronic device (M) will not be purchased, the evaluation of other items is stopped and unnecessary. do not proceed with the evaluation,

During evaluation of dependent items included in the independent item in order of weight, if a dependent item that is judged to be the grade corresponding to the maximum deduction amount or the sum of the difference amount of the previously evaluated dependent items reaches the maximum amount, there will be no more subordinate items. By stopping the value evaluation of the dependent items so that the evaluation does not proceed unnecessarily,

The value evaluation for the purchase of the electronic device (M) is made quickly.

When the artificial intelligence algorithm unit 58 evaluates the value of the item and evaluates to a level of not purchasing, the controller 50 no longer unnecessarily controls the camera unit 20 to control the corresponding electronic device M. Stop the photographing or the performance inspection unit inspecting the performance of the internal parts of the electronic device (M).

In addition, if additional data for the corresponding item or related items is required while evaluating the value of the item in the artificial intelligence algorithm, the controller 50 includes the camera unit 20, the lighting unit 30, and the performance inspection unit ( 61) to obtain necessary data (image analysis result, component performance inspection result) so that value evaluation is performed smoothly.

The artificial intelligence algorithm unit 58 is within an error range in determining the quality of the evaluation item or the grade of its defect, for example, it is not clear whether the item should be judged as 'good' or 'bad' or the grade If it is not clear which grade should be judged as 'advanced' or 'intermediate', it is possible to request a retrial by transmitting data (analysis results, inspection results, etc.) related to the central control center through the communication unit 59.

The artificial intelligence algorithm unit 58 evaluates other items after requesting a re-judgment from the control center, and when the re-judgment result is received from the control center, reflects it and finally evaluates the value of the corresponding electronic device (M) will do At this time, if it is not possible to transmit a request for retrial or receive a retrial result due to poor communication, a registration withholding the evaluation of the relevant item is performed, and the related purchase process is performed. With the consent of the seller of the electronic device (M), the cost excluding the deducted amount of the item whose evaluation is withheld is paid in advance to the seller, and when the evaluation of the item withheld thereafter is completed, an amount corresponding to the evaluated value is paid to the seller. .

The lighting unit 30 may include first to fourth lights 31 to 34 , and the camera unit 20 may include first to fourth cameras 21 to 24 .

The first to fourth cameras 21 to 24 of the camera unit 20 can selectively mount a wide-angle lens, a 1:1 lens, a macro lens, a telephoto lens, and a Pan/Tilt/zoom function. , can also be used for photographing using visible light, photographing using infrared light, or photographing using both infrared and visible light.

2a, b and 3a, the first light 31 and the first camera 21 illuminate the upper surface of the electronic device M placed in the dark room 11 of the main body 10, By photographing, the state of the upper surface of the electronic device M, that is, the damage occurring on the upper surface, is analyzed.

Tempered glass to cover and protect the screen is disposed on the upper surface of the electronic device (M). There is also an electronic device M provided with a bezel at the edge of the upper surface.

Damage, such as scratches, cracks, etc. may occur in the tempered glass covering the upper surface of the electronic device (M). Tempered glass is an expensive product and is one of the main factors determining the price (value) of the electronic device (M). Therefore, analysis of the state of tempered glass needs to be more precise.

Tempered glass is transparent, so the location and brightness of lighting, and the angle of the camera are very important factors in analyzing the condition.

First, the first camera 21 photographs the upper surface of the electronic device M at an inclined shooting angle between 35 and 60 degrees from the top of the electronic device M. As shown in FIG. The shooting angle of the first camera 21 is preferably 45 degrees.

Damages such as scratches or cracks on the transparent tempered glass may or may not be displayed on the image depending on the brightness of the lighting.

Therefore, the first light 31 is composed of LEDs arranged in a grid form, and the grid-shaped LEDs have an area that can cover the entire electronic device M.

In addition, the LEDs of the first lighting 31 arranged in a grid form illuminate the electronic device M in a state in which the lines are crossed and turned off. Here, the lines of LEDs that intersect and turn on and off can be horizontal lines, vertical lines, and diagonal lines, and LEDs in a circular or other specific shape are also included in the line of LEDs. The LED in the current state moves while shooting.

Referring to FIG. 3B , the lit LEDs among the LEDs of the first lighting 31 are formed on the upper surface of the tempered glass of the electronic device. The two LEDs forming a pair are turned on in 4 rows in the longitudinal direction, and 3 rows in the longitudinal direction between them are turned off. In addition, 12 lines in the width direction are lit, and 11 lines in the width direction between them are turned off.

As shown in Fig. 3b, in a state in which the LEDs of the first lighting 31 are turned off and taken with the first camera 21, then 12 lines that were lit in the width direction are turned off, and 11 lines that are turned off are turned on. Next, the 4 lines that are lit in the longitudinal direction are turned off, and the 3 lines that are turned off are taken with the lights on. Next, the 12 lines that were lit in the width direction are turned off and 11 lines are turned off. When shooting in the state of being lit, an image of different brightness and presence of a lit LED on the entire surface of the tempered glass is obtained. can be accurately analyzed.

The first lighting 31 may use LEDs arranged in one row instead of the LEDs being arranged in a grid. Here, the arrangement of the LEDs in one column represents a case in which the LEDs cannot cover the entire upper surface of the electronic device M, and means including the second column, the third column, and the like.

In the case of the first lighting 31 that the LEDs cannot cover the entire upper surface of the electronic device M, when the LEDs of the first lighting 31 pass the top of the electronic device M in a lit state, the electronic On the upper surface of the device M, the lit image and the unlit image coexist, and the entire upper surface may be photographed by the first camera 21 in the state of the lit image and the state of the unlit image, respectively.

Conversely, the first light 31 does not move, and the electronic device M moves so that the lit image and the unlit image coexist on the upper surface of the electronic device M, and the state of each image is determined by the first camera 21 . can be filmed in

For reference, when photographing the tempered glass of the electronic device M, the screen of the electronic device M is photographed in an off state.

2a, b and 4, the second light 32 and the second camera 22 illuminate the side of the electronic device M placed in the dark room 11 of the main body 10 and photograph it. Thus, the side state of the electronic device M is analyzed.

The second light 32 and the second camera 22 can analyze whether there is damage such as scratches, cracks, cracks, etc. generated on the side of the electronic device M, and deformation such as warpage in the electronic device M. let it be

The second camera 22 photographs the side of the electronic device M from the upper portion of the electronic device M at an inclined angle of 1 degree to 30 degrees, preferably 5 degrees to 30 degrees. A more preferable angle is 15 degrees. The second camera 22 may take pictures from the front side of the electronic device M. In this case, the electronic device M may be distorted into a curved shape in the image due to the angle of view of the camera. Therefore, it is preferable to shoot at an inclined angle between 5 and 30 degrees, as above, rather than from the front side. If a lens with a wide angle of view is used to capture a large electronic device M at a close distance to the camera while shooting a large electronic device M, the image of the side of the photographed electronic device may be bent. As shown above, the angle of the second camera 22 By adjusting , you can correct the image warping. If the distance between the electronic device and the camera is adjusted, it may not be necessary to adjust the inclination angle of the camera. As the second camera 22, a wide-angle lens having a wide angle of view, a 1:1 lens, a macro lens, a telephoto lens, and a Pan/Tilt/zoom function may be selectively mounted.

The second light 32 illuminates the side of the electronic device M in the same direction as the second camera 22 . The second light 32 may be separately prepared and mounted in the darkroom 11 , or the LEDs arranged in the edge row in the first light 31 , in which the LEDs are arranged in a grid, may be used as the second light 32 . have.

2a, b and 5, the third light 33 and the third camera 23 illuminate the lower surface of the electronic device M placed in the dark room 11 of the main body 10, By photographing, the state of the lower surface of the electronic device M is analyzed.

The third lighting 33 and the third camera 23 analyze whether there is any damage, such as scratches, cracks, cracks, etc., occurring on the lower surface of the electronic device M.

The third camera 23 is disposed under the electronic device (M) to photograph the lower surface of the electronic device (M) placed on the transparent mounting plate (13), and the third light (33) is the electronic device (M) Illuminates the lower surface of the electronic device (M) in the lower part of the.

The third camera 23 and the third lighting 33 may photograph and illuminate from a lower portion of the electronic device M, or may photograph and illuminate from an inclined direction from the lower portion.

2a, b and 6, the fourth light 34 and the fourth camera 24 illuminate the upper surface of the electronic device M placed in the dark room 11 of the main body 10, By taking a picture, the state of the screen located on the upper surface of the electronic device M is analyzed.

It is possible to analyze the output state of the screen of the electronic device M of the fourth light 34 and the fourth camera 24 and whether there is damage such as stains, aging, or burn-in on the screen.

The fourth camera 24 takes a picture of the screen from the front of the upper portion of the electronic device (M). The controller 50 causes an image to be displayed on the screen through the terminal driver 53 so that the output state of the screen can be photographed and analyzed, and the screen is displayed in white, gray or black so that the entire screen is displayed in white, gray or black. Take a picture of any damage such as burn-in so that it can be analyzed.

The fourth lighting 34 illuminates the lower surface from the lower part of the electronic device M to match the color and balance of the screen, thereby increasing the quality of the screen for analyzing the state of the screen. In other words, when a screen displayed in white, gray, or black is photographed, the light of the screen spreads to the surroundings and the boundary of the screen becomes unclear, thereby causing an error in image analysis. Accordingly, this problem is prevented by adjusting the white balance by illuminating the fourth light 34 from the lower part of the electronic device M. As shown in FIG.

At this time, instead of the fourth lighting 34, a black blocking sheet that absorbs and blocks light from the seating plate 13 on which the electronic device M is placed to the vicinity of the electronic device M may be disposed to prevent this problem. .

For reference, if the black blocking sheet is placed when photographing and illuminating the side and lower surfaces of the electronic device M, it may help to acquire a higher quality image.

The electronic device (M) analyzes the state by photographing a total of six surfaces: the upper surface, the lower surface, and the four sides.

At this time, in consideration of the size of the electronic device M and the angle of view of the camera, there are two methods of photographing all six sides of the electronic device M. The first method is to use the mobile unit 40 to move the camera to the electronic device M while minimizing the number of cameras, and the second method is to reduce the number of cameras while simplifying the mobile unit 40. It is a plan to shoot all 6 sides by extending it. Of course, there is also a method of maximizing the number of cameras without using the mobile unit 40 to photograph all six sides of the electronic device M in place without moving.

The first method provides an environment closest to the environment that a person inspects, but implements a mechanical mechanism of the moving unit 40 for moving and moving the direction of the inspection product (ie, the electronic device M) in a specific space in various ways In order to do this, there is a problem in that the size of the entire system increases and the system configuration price increases, and there is a difficulty in implementing a technique for fine tuning the movement and movement of the mobile unit 40 .

Therefore, rather than the first method, the second method in which the number of cameras is slightly increased while simplifying the mobile unit 40 may be preferable.

Referring to FIG. 7A , the camera uses an electronic device (M) in six photographing directions of four sides (VIEW #1, #2, #3, #4), a lower surface (VIEW #5), and an upper surface (VIEW #6). 6 sides can be photographed.

Referring to FIG. 7B , if the mobile unit 40 is configured to move the electronic device M forward and backward in a straight line when the angle of view of the camera is small, the camera is displayed on four sides (VIEW #1, #2, #3, #4), the lower surface (VIEW #5), and the upper surface (VIEW #6) in six photographing directions, six sides of the electronic device M can be photographed. For reference, if the electronic device M does not move forward and backward in FIG. 7B , the camera can photograph all six sides of the electronic device M only when two photographing directions are added to the side and one photographing direction to the upper and lower surfaces.

Referring to FIG. 7C , when the mobile unit 40 is configured to rotate the electronic device M by 360 degrees, the camera is configured to rotate the side (VIEW #1), the lower surface (VIEW #5), and the upper surface (VIEW #6). ), it is possible to photograph all six sides of the electronic device M only in the three photographing directions.

Referring to FIG. 7D , if the mobile unit 40 rotates the electronic device M by 360 degrees when the view angle of the camera is small and is configured to move forward and backward in a straight line, the camera is 1), the lower surface (VIEW #5), and the upper surface (VIEW #6), all six sides of the electronic device M can be photographed in only three photographing directions.

When the light source (LED corresponds to the light source) of the lighting unit 20 directly irradiates the electronic device M, and the camera takes pictures of the light source reflected on the surface of the electronic device M and its surroundings, in the image where the light source is located The area cannot be judged. Therefore, the camera takes a picture in a state in which a light source in a different position irradiates the electronic device M, so that an image is taken in a state where there is no light source in the position where the light source is previously reflected. That is, a plurality of light sources are provided in the lighting unit 20 , and the camera acquires an image by photographing the electronic device M in a state in which some of the light sources are alternately lit.

In addition, the camera may be photographed in a state in which the light source is not reflected on the surface of the electronic device M, that is, it may be photographed so that the light source is not visible in the image. In this case, the electronic device M is scattered according to the illumination angle of the illuminated light The degree of scattering of a region (usually, mainly scattered in a portion having a scratch or deformation in the electronic device M) is weak, so that it may not be identified in the image. So, at this time, the lighting unit should irradiate the light source from various angles so that scattering of a certain intensity or more is generated at the scattering portion of the electronic device M.

As such, when the lighting unit 20 illuminates the electronic device M, a plurality of light sources having different irradiation angles illuminate at the same time. (destructive interference) may occur, resulting in an interference fringe with dark or light and dark bands. Destructive interference or interference fringes make image analysis difficult.

Accordingly, in the present invention, the wavelength (color temperature of light) of the light illuminating by the light sources constituting the lighting unit is two or more, and the controller 50 sets the electronic device M at the same time as the plurality of light sources at different illumination angles. When illuminating while illuminating, the wavelength of the light of the lights is made to be different, thereby preventing the occurrence of light interference.

As the light sources, the color of the emitted light (ie, color temperature, wavelength) is controlled, and the controller 50 controls the colors of the light sources illuminated at the same time to be different to prevent light interference, and the light sources are one each. While using one that is illuminated with the color of , the controller can select a different color as the light source to be illuminated at the same time to prevent light interference.

As a method for preventing interference fringes caused by light interference, the light source may include a surface light source filter that converts illumination into a surface light source. At this time, the reduction in the amount of light while being switched to the surface light source can be dealt with by providing the light source with a narrow angle filter that adjusts the light emission angle to a narrow angle. The surface light source filter and the narrow-angle filter may be independently provided in the light source, or may be provided together in combination.

Figure 2c is a front view of the arrangement structure of the camera unit and the lighting unit, which is good for preventing the interference of light because the light is photographed by the camera in a state where the lights are not directly reflected by the electronic device (M), and the wavelengths of the lights are two or more and a plan view is shown.

Referring to FIG. 2C , a fourth camera 24 for photographing the upper surface of the electronic device M is disposed on the upper surface of the main body 10 , and four cameras of the electronic device M are disposed on each side of the main body 10 . The fifth cameras 25-1 to 25-4 for photographing the side are disposed, and a third camera 23 for photographing the lower surface of the electronic device M is disposed on the lower surface of the main body 10 .

Fifth lights 35 - 1 to 35 - 4 are arranged on each side of the body 10 . In the example shown in FIG. 2C , the fifth light 35 - 1 may be located on the first side of the body 10 and the fifth light (or second light source) 35 - 3 faces the first side. The sight may be located on the second side, the fifth illumination 35-2 may be located on the third side of the body 10, and the fifth illumination 35-4 is a fourth side facing the third side. It can be located on the side.

Each of the fifth lights 35-1 to 35-4 corresponds to a light source. The fifth illumination 35-1 may be expressed differently as a first light source, the fifth illumination 35-2 may be expressed differently as a second light source, and the fifth illumination 35-3 may be expressed as a third light source. may be expressed differently, and the fifth illumination 35 - 4 may be expressed differently as the fourth light source.

Each of the fifth lights 35-1 to 35-4, for example, may have a structure in which LEDs are arranged in a line, but is not limited thereto. Depending on the implementation, each of the fifth lights 35-1 to 35-4 may include one LED.

so that the light of the fifth lights 35-1 to 35-4 is not directly reflected by the electronic device M to be photographed by the fourth camera 24 and the fifth cameras 25-1 to 25-4 , lighting of the fifth lights 35-1 to 35-4, driving of the fourth camera 24, and driving of the fifth cameras 25-1 to 25-4 are controlled by the controller.

The light of the fifth illuminations 35-1 to 35-4 is diffusely reflected or scattered in a portion where there is a deformation (crack, crack, scratch, etc.) in the electronic device M, and the fourth camera 24 and the fifth camera At least one of the ones 25-1 to 25-4 acquires an image of the scattering portion of the electronic device M. Here, the degree of diffuse reflection or scattering may be adjusted according to the angle at which the fifth lights 35 - 1 to 35 - 4 irradiate the electronic device M.

In order to prevent interference, the fifth lights 35 - 1 to 35 - 4 may simultaneously illuminate the electronic device M in two or more directions with two or more wavelengths. When light is irradiated in the vertical direction to a crack or broken part of a product made of a material such as glass, there may be little or no scattering. can occur Accordingly, the fifth lights 35 - 1 to 35 - 4 may illuminate the electronic device M with two or more wavelengths.

In the example shown in FIG. 2C , the fifth illumination 35 - 1 and the fifth illumination 35 - 3 may output light of different wavelengths. For example, the fifth illumination 35-1 may output light having a wavelength of λ1 and the fifth illumination 35-3 may output light having a wavelength of λ2. The distance between the fifth illumination 35-1 and the fifth illumination 35-3 is short, and when the fifth illumination 35-1 and the fifth illumination 35-3 output light of the same wavelength, electrons are caused by interference. Diffuse reflection or scattering of the appearance defects of the device M (eg, cracks, cracks, scratches, etc. described above) may be offset. Due to this, an image of the appearance defect of the electronic device M may not be accurately formed on one or more or all of the fourth camera 24 and the fifth cameras 25-1 to 25-4. Accordingly, the fifth illumination 35-1 and the fifth illumination 35-3 may output light of different wavelengths.

In an embodiment, the fifth illumination 35-4 facing the upper side of the electronic device M and the fifth illumination 35-2 facing the lower side of the electronic device M emit light of the same wavelength. can be printed out. The distance between the fifth illumination 35-2 and the fifth illumination 35-4 is long enough that there is no light interference, so that the fifth illumination 35-2 and the fifth illumination 35-4 emit light of the same wavelength. can be printed out. In this case, the fifth illumination 35 - 2 and the fifth illumination 35 - 4 may output light having a wavelength different from that of the fifth illumination 35 - 1 and the fifth illumination 35 - 3 , respectively. For example, the fifth illumination 25 - 2 and the fifth illumination 25 - 4 may output light having a wavelength of λ3. Depending on the implementation, the fifth illumination 35-2 and the fifth illumination 35-4 may output light of different wavelengths. For example, the fifth illumination 35-2 may output light having a wavelength of λ3 and the fifth illumination 35-4 may output light having a wavelength of λ4. In this case, each of the fifth lights 35-1 to 35-4 outputs light of different wavelengths.

In the example shown in FIG. 2C , the fifth illumination 35-1 and the fifth illumination 35-3 may output light at the first irradiation angle, and the fifth illumination 35-2 and the fifth illumination ( 35-4) may output light at a second irradiation angle different from the first irradiation angle. According to implementation, each of the fifth lights 35 - 1 to 35 - 4 may output light at the same irradiation angle.

In FIG. 2C , when the distance between the electronic device M and the fifth lighting 35 and the distance between the electronic device M and the fifth camera 25 are the same, the fifth lighting 35 sets the electronic device M It is preferable that the angle of illumination be 45 degrees or less. At this time, when the area of the electronic device M is widened or the distance between the fifth lighting 35 and the electronic device M is increased, the angle at which the fifth lighting 35 illuminates the electronic device M is increased in proportion thereto. can be small

In the case of the example shown in FIG. 2C , the light of the fifth lights 35 - 1 to 35 - 4 is directly reflected by the electronic device M to the fourth camera 25 - 4 and the fifth camera 25 - 1 to 25-4), the fifth lights 35-1 to 35-4 may output light of strong intensity. At this time, streaks may occur in the image due to the material characteristics of the electronic device M. In order to solve this problem, a surface light source filter that converts to a surface light source can be used for the fifth lights 35-1 to 35-4, In order to increase the efficiency of brightness, a narrow-angle filter in which the irradiation angle of the fifth lights 35-1 to 35-4 is a narrow angle may be used.

FIG. 2C shows that the number of images acquired for analysis of the electronic device M can be reduced because the fifth lights 35-1 to 35-4 are simultaneously irradiated and photographed, and thus the number of images acquired for analysis of the electronic device M can be reduced. It is possible to shorten the evaluation time of the device (M).

In an embodiment, the controller may display the value of the electronic device M (eg, the purchase price of the electronic device M) on the display of the external image capturing analysis system. For example, the controller may perform an appearance inspection and a performance inspection of the electronic device M, and may determine the value of the electronic device M through at least one of the appearance inspection result and the performance inspection result. The external inspection may be performed based on one or more images obtained by each of the cameras 23 , 24 , and 25 - 1 to 25 - 4 captured by the electronic device M. As another example, the controller may transmit one or more images in which each of the cameras 23 , 24 , and 25-1 to 25-4 photographed the electronic device M to a server or a control center. Also, the controller may transmit the performance test result of the electronic device M to a server or a control center. The server or control center may perform an external inspection of the electronic device M using one or more received images, and the value of the electronic device M may be evaluated through the external inspection result and the performance inspection result of the electronic device M. can decide The server or the control center may transmit the determined value of the electronic device M to the exterior photographing analysis system. The controller may display the determined value of the electronic device M received from the server or the control center on the display of the exterior shooting analysis system. Accordingly, the owner of the electronic device M may check what the value of the electronic device M is, and may or may not sell the electronic device M. When the owner of the electronic device M finally decides to sell the electronic device M, the controller may allow the electronic device M placed in the main body 10 to be safely moved to a collection box to be described later.

It is preferable that the system according to the present invention can adjust the illuminance according to each shooting environment. Accordingly, the illuminance sensor is used to monitor whether the illuminance of the LED light source is being irradiated with the set value. The controller senses the illuminance inside the main body 10 using the illuminance sensor at the initial stage of operation of the system and at any set period, and controls the amount of light of the lighting unit when the sensed illuminance is out of the error range so that the illuminance is maintained within the set range. do.

The controller of the present invention takes a picture of the inside of the main body 10 at the initial stage of driving and every set period to check the performance of the camera unit, and checks the state of the camera unit and the shooting environment of the body by comparing it with the pre-photographed image.

The controller of the present invention may guide the seller to remove the attachment of the terminal when an erroneous determination is expected due to an attachment attached to the electronic device, and at this time, may also guide the conversion to deferred payment sales due to an erroneous determination according to the attachment.

Among the components constituting the present invention, the camera unit 20 is a relatively expensive component, and is a component that requires maintenance or replacement due to a failure.

Therefore, if the quantity of the camera unit 20 is reduced, the manufacturing cost can reduce the manpower and cost of maintenance.

Accordingly, in the present invention, the number of cameras can be reduced by using the reflective mirror 60 .

The reflective mirror 60 is mounted inside the main body, so that the electronic device M can be photographed in a direction that the camera unit 20 does not face (ie, a direction that the camera unit cannot take directly).

In Fig. 8a, one camera simultaneously photographs six sides of the electronic device M, in Fig. 8B one camera simultaneously photographs five sides of the electronic device M, and Fig. 8c shows one camera photographing the electronic device (M) at the same time. M) shows an example of a structure for photographing three sides at the same time.

For the appearance of the electronic device (M), the front with the tempered glass is the most important. So, the camera unit 20 is mounted on the upper part of the main body and uses a front camera (the fourth camera 24 of FIG. 2A can be used as a front camera) for photographing the electronic device M from the top. may be desirable.

And the reflective mirror 60 is a side mirror 61 for simultaneously photographing the side of the electronic device M to the front camera, and a rear mirror 62 for simultaneously photographing the rear side of the electronic device M. use

Referring to FIG. 8A , in the darkroom of the main body 10, four side mirrors 61 installed on the upper side based on the transparent seating plate on which the electronic device M is placed, respectively, show the side of the electronic device M to the front camera. Provided, the rear mirror 62 installed on the lower side with respect to the seat plate provides the rear side of the electronic device (M) to the front camera. The rear mirror 62 may provide the entire rear surface of the electronic device M by using one to four according to the size and angle.

Fig. 8b shows a structure in which the front camera can simultaneously photograph 5 sides of the electronic device M except for the rear side because the rear mirror 62 is not used, and Fig. 8c shows the rear mirror 62 without using the rear view mirror 62. Two side mirrors 61 are used to show a structure in which the front camera can simultaneously photograph the front and both sides of the used electronic device (M).

The size of the electronic device M varies depending on the type. Therefore, even if the type of the electronic device (M) is different, it may be preferable that the angle of the reflective mirror (60) can be adjusted so that images for the side and rear surfaces are optimally taken.

When collection through evaluation and purchase of the electronic device M is performed in the main body 10, the purchase price may be paid to the seller, but if there is a separate collection box (not shown) for collecting the electronic device M The purchase price is paid after confirming that the electronic device M evaluated in the main body 10 and the electronic device M stored in the collection box are the same electronic device M.

There may be various methods of checking whether the electronic device M registered for value evaluation in the main body 10 and the electronic device M stored in a separate collection box are the same.

The used electronic device M registered in the main body 10 may be connected to the main body by wire or wirelessly for value evaluation, a program for value evaluation may be installed, and may be remotely controlled. The electronic device (M) accommodated in the collection box is also connected to the storage box by wire or wirelessly in order to authenticate the same electronic device (M).

Since the main body 10 and the collection box can obtain the unique ID of the electronic device M connected by wire or wirelessly, respectively, it is possible to verify the identity of the electronic device M by comparing the unique ID in the collection box. Here, the unique ID of the electronic device M may include a MAC address of hardware, model information, a unique number of a part, a serial number of an installed program, and the like.

If the electronic device (M) registered in the main body is remotely controlled for value evaluation, the electronic device (M) stored in the collection box can also be remotely controlled. Therefore, the identity of the electronic device M can be authenticated in a way that the electronic device M recognizes the internal environment of the collection box through remote control.

For example, the electronic device M recognizes various types of information output from the collection box, such as lighting, storage path, frequency, and sound, through remote control of environmental information. If the environmental information output from the box matches the environmental information recognized by the electronic device M, the same electronic device M is authenticated. At this time, the environmental information output from the storage box should not be released to the outside of the storage box.

To give a specific example,

A light emitting light of a different color is installed inside the collection box, one light is turned on, and the camera of the housed electronic device (M) is photographed and checked whether the same color is photographed to verify the identity. Alternatively, the identity may be verified by blinking the light and checking the number of blinks.

When the electronic device M is stored in the collection box, it is possible to authenticate by analyzing the motion of the gyro sensor inside the electronic device M, such as a request for a path in which the electronic device M is received, and an inclination, a bend, and the like.

A speaker installed inside the collection box may generate a specific sound (frequency), and obtain it through the microphone of the electronic device M to authenticate identity.

Contrary to the above, the electronic device (M) stored in the collection box displays a specific color on the screen, the camera installed inside the collection box can photograph it to authenticate the identity, and the electronic device (M) outputs a specific sound (frequency) and , the microphone installed in the collection box may acquire it and authenticate the identity.

After evaluating the value of the electronic device M through the system according to the present invention and purchasing the electronic device M based on this, the data stored in the memory of the corresponding electronic device M is deleted, that is, the memory is initialized. Personal data or personal information of the former owner (ie, seller) of the electronic device (M) should not be leaked.

A data deletion module 62 may be provided in the controller 50 so that the personal information of the former owner is not leaked through the purchased electronic device M. When it is inappropriate to delete data by providing a data deletion module 62 in a kiosk installed in the field in consideration of cost and security, the data deletion module 62 may be provided in the control center.

9 shows a procedure related to the data deletion method of the electronic device M performed by the data deletion module 62 .

Referring to FIG. 9 , the data deletion method of the electronic device M according to the present invention includes a connection step S10 of accessing a data area of the electronic device M, and encryption of the data area of the connected electronic device M An encryption step (S20), a deletion step (S30) of deleting the encrypted data area, a random overwrite step (S40) of completely deleting the data of the data area, and an initialization step of performing a factory reset of the electronic device (M) (S50).

If we describe each step in more detail,

First, the connecting step (S10) is a step of entering the debugging mode by connecting the electronic device (M), and generally refers to a step of connecting the data deletion module and the electronic device (M) using a separate USB cable.

Debugging mode refers to a mode that outputs detailed information that is helpful in detecting and correcting system errors. It is often called developer mode. It is used to copy area data or to forcefully install a specific application, and to read device information that is not shown in general user mode.

In order to enter the developer mode again, authentication or confirmation of the user is required, and for this purpose, it is preferable that a process of driving a separate authentication or confirmation procedure is performed.

When entering the debugging mode in this way, in general, the deletion step (S30) of deleting the data area of the electronic device M is immediately entered and the deletion is performed. In this case, the deleted data is recovered through a separate restoration program. leakage of personal information can become a problem.

Therefore, the present invention further proceeds with the encryption step (S20) applying the encryption technology for the entire data area before the deletion step in order to prevent it from being opened even after data is restored through the restoration program, so that the data through the data restoration program after deletion is performed. Even if you restore the data, it is restored as encrypted data, so if there is no encryption code at the time of encryption, the data cannot be restored immediately.

Specifically, first, in order to proceed with the overall deletion process, such as the encryption step (S20) and the deletion step (S30), first, as with the debugging mode entry, the process of driving the confirmation procedure according to the user's approval and progress is performed. desirable.

If the user's approval is confirmed in the above process, an encryption step (S20) of encrypting the data area is performed.

To this end, first, the general structure of the memory of the electronic device M will be described.

Unlike a general desktop PC, the memory of the electronic device M is divided into a boot area, a system area, a recovery area, a data area, a cache area, and a misc area.

The boot area is a space in which a program, resource, data, etc. for booting the electronic device (M) are stored,

The system area is a space in which files related to a system necessary for driving the electronic device M are stored, and refers to a space in which a program installed when the electronic device M is produced in a factory is stored.

The recovery area is a space in which the recovery program is stored to return the aforementioned system area to the state released by the factory when performing factory reset, etc.

The data area is a space in which programs and personal files (contacts, messages, settings) stored by the user are stored, and each user's personal information is included in this space.

In addition, the cache area is a space in which cache data is stored, where cache data is a small high-speed storage device provided to improve performance. Data that is automatically stored.

In addition, the Misc area is a space to store CID (Carrier or Region ID), USB configuration, and information related to specific hardware settings.

Therefore, the encryption step (S20) of the present invention encrypts the data area in particular for each area of the electronic device M, and encrypts all data files such as personal information, that is, messages, photos, contacts, photos, and certificates. so that it cannot be opened arbitrarily.

More specifically, the encryption step (S20) encrypts both the data area, particularly the data area of the internal memory and the data area of the external memory, and encrypts the data area using an encryption code. The 128-bit method is used.

AES encryption method is described.

First, the National Bureau of Standards in the United States established an encryption standard called DES (Data Encryption Standard) for data encryption in 1975, and this technology uses a 56-bit key for symmetric-key. key) As an encryption method, it has been used without any problems for a while, but it has a problem that it can be decrypted using a special method because the length of the key is too short and a backdoor is included.

Therefore, as a method developed to solve this problem, the AES technology also uses a symmetric key method that uses the same key for encryption and decryption, but it is possible to process a 128-bit block with a key length of 128-bit, 196-bit, or 256-bit. This is the biggest difference from DES.

After encrypting the data area as described above, the deletion step (S30) of deleting the encrypted data area is entered.

The deletion step ( S30 ) refers to a step of deleting all of the aforementioned areas of the electronic device M, that is, the data area and the cache area.

The deletion step (S30) is to erase the record from the file system, and there is a problem in that it can be easily restored using a restoration program, rather than actually finding the corresponding file and deleting the file.

Therefore, in the present invention, after the deletion step (S30), the present invention undergoes a random overwrite step (S40) once more in order to delete a more complete data area.

The random overwrite step (S40) means permanent deletion different from general deletion. The zero fill method records the entire data area as 0 or 1, and the zero fill method records the entire data area with non-overlapping characters. There is an infinite random number input method that removes data.

The present invention does not follow the simple method of the operating system, but deletes the file system record and moves to the actual file space recorded in the data area, and records new data on the file, that is, 0 or 1 or non-overlapping characters. Random overwrite with

In general, as for the complete data deletion method, the standard method (DOD 5220.22-M) recommended by the U.S. Department of Defense or the National Intelligence Service is applied in the case of storage media such as PC's HDD, and overwriting three or more times is usually recommended. On the other hand, mobile devices use flash memory as a storage device, unlike storage media such as HDDs in PCs. In the case of flash memory, direct data overwriting is not possible. data is completely erased. However, in the case of flash memory, overwriting several times in this way takes a long time and has the side effect of shortening the lifespan of the memory. It is a general trend to However, there is a problem in that data recovery technology has developed along with these deletion methods, so that complete data deletion cannot be guaranteed with a simple zero fill. Recovery technology, such as using H/W, is also developing, so it is difficult to expect perfect deletion.

Therefore, in the present invention, not only the zero fill method of recording data as 0 or 1, but also the infinite random number input method of inputting characters that do not overlap each other depending on the state of the electronic device (M) are mixed and used to prevent complete deletion of data. make it possible,

As an additional security measure, the present invention, as mentioned above, performs the encryption step before the random overwrite step (S40) to recover the encrypted file even if the personal information is recovered, so that the personal information cannot be read more completely It has features to protect personal information.

In the random overwrite step (S40), the present invention uses a mixture of an infinite random number input method and a zero fill method to more safely protect personal information, and is processed in a parallel process for faster processing.

It will be described in more detail with reference to FIG. 9 .

First, in the random overwriting step (S40), it is checked whether the capacity of the memory data area is larger than a reference capacity (eg, 100M) (S41).

As a result of checking, if the data area is smaller than the reference capacity, data is completely deleted for the entire data area by the infinite random number input method, the zero fill method, or a method in which they are mixed (S42).

As a result of checking, if the data area is larger than the reference capacity, the data area is sequentially divided into sectors S45 having a divided capacity (eg, 280M) (S43). Here, the sectors S45 are physically and logically divided so as not to affect each other.

When the division of the first sector in the data area is completed, data is completely erased in a mixed method of an infinite random number input method and a zero fill method for the first sector. The division of the second sector is started in the remaining part of the region, and when the division of the second sector is completed, data is completely erased, and the division of the third sector is started again.

Therefore, the random overwrite step (S40) is processed in a parallel process method in which data complete deletion of a plurality of sectors (S45) divided in the data area is simultaneously performed, thereby reducing the data complete erasing time for the entire data area .

As a method of completely erasing data in the divided sector (S45), data is completely deleted by an infinite random number input method for a part of the divided sector (eg, 90M out of 280M) (S46), and some of the remaining sectors (eg, 190M) (280-90)), the data is completely deleted by the zero fill method for some (100M) (S47), and the data is completely deleted (S48) by the infinite random number input method for the rest (eg, 90M). can be used

The electronic device (M) that has undergone the random overwrite step (S40) in this way goes through an initialization step (S50) of performing a factory reset for reuse, and through this, the data of the existing electronic device (M) can be completely deleted. When restoration is attempted for a criminal act, since the restored data is encrypted, it cannot be opened, thereby further strengthening the complement.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiment, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and carry out program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

The software may comprise a computer program, code, instructions, or a combination of one or more thereof, which configures a processing device to operate as desired or is independently or collectively processed You can command the device. The software and/or data may be any kind of machine, component, physical device, virtual equipment, computer storage medium or device, to be interpreted by or to provide instructions or data to the processing device. , or may be permanently or temporarily embody in a transmitted signal wave. The software may be distributed over networked computer systems, and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

As described above, although the embodiments have been described with reference to the limited drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (7)

display;
a body in which the electronic device is placed;
lights;
a camera for photographing the electronic device; and
A controller configured to display, on the display, a value of the electronic device determined based on an appearance test result of the electronic device and a performance test result of the electronic device
including,
The lights output light, but some of the lights output light of different wavelengths so as not to cancel the diffuse reflection of the appearance defect of the electronic device,
The camera acquires an image including the appearance defect by performing photography without canceling the diffuse reflection,
The visual inspection result is based on the acquired image,
Electronic device valuation system.
The method of claim 1,
The remaining lights of the lights output light of the same wavelength or output light of different wavelengths,
Electronic device valuation system.
3. The method of claim 2,
the distance between some of the lights is different from the distance between the rest of the lights,
Electronic device valuation system.
According to claim 1,
A first light among the lights is located on the first side inside the body
A second light among the lights is located on a second side facing the first side,
A third light among the lights is located on a third side of the inside of the body,
A fourth light among the lights is located on a fourth side facing the third side,
Electronic device valuation system.
delete 5. The method of claim 4,
The first illumination and the second illumination output the light of the different wavelengths,
The first illumination and the second illumination output light at a first irradiation angle,
The third illumination and the fourth illumination output light at a second irradiation angle,
Electronic device valuation system.
According to claim 1,
The appearance defect includes a defect in the display of the electronic device,
Electronic device valuation system.

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