TW202045966A - Method and system for identifying position of light-emitting component and computer program product generating and outputting a key light emitting component list at least including the component recognition data - Google Patents

Abstract

Disclosed is a light emitting component position identification method is implemented on a display device and a light-emitting device by a light emitting element position identification system, wherein the display device includes a back cover, and the light emitting apparatus includes a plurality of light emitting components disposed on the back cover. The method for identifying the position of the light emitting component includes: (A) taking a photography under the condition that a tested light emitting component in the light emitting components emits light to obtain a shot image; (B) when it is determined that the shot image meets a light emitting position matching condition, generating a component recognition data for indicating the tested light emitting component, wherein the light emitting position matching condition is related to colors of a plurality of key regional parts in the shot image, and each of the key regional parts shows the edge of the display device; and (C) generating and outputting a key light emitting component list at least including the component recognition data.

Description

Method and system for identifying position of light-emitting element and computer program product

The invention relates to a method and system for identifying the position of a light-emitting element, in particular to a method and system for identifying the position of a light-emitting element suitable for a display device. The invention also relates to a computer program product that enables the light-emitting element position identification system to implement the light-emitting element position identification method.

In recent years, the functionality of screen devices such as televisions and computer screens has continued to improve. In order to further enhance consumers' visual experience, screen devices equipped with "Ambilight" technology have appeared on the market.

The aforementioned "Ambilight technology" is to set a plurality of light-emitting elements arranged in a surrounding shape at the edge of the back cover of the screen device. When the screen device displays a dynamic picture, the light-emitting elements emit light, and the light The color of is matched with the picture displayed by the screen device and will change with the change of the picture. For example, if the right half of the screen displayed by the screen device is a blue ocean and the left half is a green mountain, the light-emitting element in the right half will emit blue light, and the light-emitting element in the left half will be Will emit a green light.

In the prior art, the Ambilight technology is built in during the manufacturing process of the screen device. In addition, during the manufacturing process of the screen device, the relative position relationship between each light-emitting element and the screen of the screen device needs to be defined in advance to control the light-emitting elements to emit light of the correct color to ensure the light emitted by each light-emitting element The color matches the color of the corresponding position in the screen.

However, for display devices that do not originally have the Ambilight function, it is technically difficult to develop a set of "accessory products" that can be used in various sizes of display devices and can make them have the Ambilight function. .

Taking FIG. 1 for example, the front view in FIG. 1 shows a first display device 80A and a second display device 80B with different sizes from each other, and are installed on the first display device 80A and the second display device respectively. A first light-emitting unit 90A and a second light-emitting unit 90B on the back cover of the device 80B. In this example, the first display device 80A and the second display device 80B have different sizes, so the first light-emitting unit 90A is composed of 32 light-emitting elements D, and the second light-emitting unit 90B is composed of 22 light-emitting elements. A light-emitting element D'. And, if the light-emitting element D located in the lower left corner of the first light-emitting unit 90A is taken as the first light-emitting element D, and the other light-emitting elements D are numbered in a clockwise direction, the light-emitting element D is located in the first display device. The four light-emitting elements D at the four corners of 80A will be the first, seventh, seventeenth, and twenty-third light-emitting elements D (that is, the light-emitting elements D1, The light-emitting element D7, the light-emitting element D17, and the light-emitting element D23). On the other hand, if the light-emitting element D'in the lower left corner of the second light-emitting unit 90B is also used as the first light-emitting element D', and the other light-emitting elements D'are also numbered in a clockwise direction, The four light-emitting elements D'located at the four corners of the second display device 80B will be the first, fifth, twelfth, and sixteenth light-emitting elements D'(that is, as shown in FIG. 1). The light-emitting element D1', the light-emitting element D5', the light-emitting element D12', and the light-emitting element D16' are shown).

It can be seen that if the sizes of two display devices are different from each other, the number of light-emitting elements required on each side will also be different. As a result, when the size of the display device cannot be predicted, it is of course impossible to predefine the light-emitting elements. The relative position relationship with the display device. Therefore, if the aforementioned "accessory products" can be universally applied to display devices of different sizes, it is necessary to define the relative positional relationship between the light-emitting element and the display device in real time. The technical difficulty lies in how The light-emitting element arranged on the display device performs real-time position recognition.

Therefore, one of the objectives of the present invention is to provide a method for identifying the position of a light emitting element that can overcome the difficulties of the prior art.

The position identification method of the light-emitting element of the present invention is implemented by a light-emitting element position identification system on a display device and a light-emitting device. The display device includes a back cover, the light emitting device includes a plurality of light emitting elements arranged on the back cover, and the light emitting element position identification system includes a photographing unit and a processing unit. The method for identifying the position of the light-emitting element includes: (A) when a light-emitting element under test among the light-emitting elements emits light, the processing unit controls the photographing unit to shoot to obtain a photographed image; (B) when the processing unit When it is determined that the shot image meets a light-emitting position matching condition, a device identification data indicating the light-emitting element under test is generated. The light-emitting position matching condition is related to the color of a plurality of key areas in the shot image, and each key The area part presents the edge of the display device; (C) the processing unit generates and outputs a key light emitting component list containing at least the component identification data.

In some embodiments of the method for identifying the position of a light-emitting element of the present invention, in step (B), each key area part presents one corner of the edge of the display device, and the light-emitting position matching condition includes the key area parts One of the key regions in the CCD has a target color part showing the color of the light emitted by the light-emitting element under test.

In some embodiments of the method for identifying the position of the light-emitting element of the present invention, in step (B), the light-emitting position matching condition further includes that the ratio between the area of the target color portion and the area of the key region portion is greater than or equal to a predetermined Threshold value.

In some embodiments of the method for identifying the position of the light-emitting element of the present invention, the back cover of the display device faces the rear side of the display device, and the display device is suitable for being disposed in front of a wall so that the back cover of the display device Towards the wall. In step (A), the photographing unit photographs the display device from the front side of the display device.

In some embodiments of the light-emitting element position identification method of the present invention, the light-emitting element position identification method further includes before step (A): (D) the processing unit controls the light-emitting element under test to emit light.

In some embodiments of the light-emitting element position identification method of the present invention, in step (D), the processing unit outputs the key light-emitting element list to a light-emitting device that is included in the light-emitting device and can control the light-emitting elements to emit light. The control unit, the key light-emitting element list further includes at least another element identification data, and the key light-emitting element list is used for the control unit to control the light-emitting elements to emit light whose color changes with the screen displayed by the display device.

Another object of the present invention is to provide a light-emitting element position identification system capable of implementing the method for identifying the position of the light-emitting element.

The light-emitting element position identification system of the present invention is suitable for a display device and a light-emitting device. The display device includes a back cover, and the light-emitting device includes a plurality of light-emitting elements arranged on the back cover. The light-emitting element position identification system includes a photographing unit and a processing unit electrically connected to the photographing unit. When one of the light-emitting elements under test emits light, the processing unit controls the shooting unit to shoot to obtain a shot image, and when the processing unit determines that the shot image meets a light-emitting position matching condition, a Indicates the device identification data of the tested light-emitting device, the light-emitting position matching condition is related to the color of a plurality of key area parts in the captured image, and each key area part presents the edge of the display device, the processing unit generates And output a key light-emitting component list containing at least the component identification data.

In some implementations of the light-emitting element position recognition system of the present invention, each key area part presents one of the corners of the edge of the display device, and the light-emitting position matching condition includes one of the key area parts There is a target color part showing the color of the light emitted by the light-emitting element under test.

In some embodiments of the light-emitting element position identification system of the present invention, the light-emitting position matching condition further includes that the ratio between the area of the target color portion and the area of the key region portion is greater than or equal to a predetermined threshold.

In some embodiments of the light-emitting element position recognition system of the present invention, the back cover of the display device faces the back side of the display device, and the display device is suitable for being disposed in front of a wall so that the back cover of the display device Towards the wall; wherein the photographing unit is to photograph the display device from the front side of the display device.

In some embodiments of the light-emitting element position identification system of the present invention, the processing unit also controls the light-emitting element under test to emit light before controlling the photographing unit to perform photographing.

In some embodiments of the light-emitting element position identification system of the present invention, the processing unit outputs the key light-emitting element list to a control unit included in the light-emitting device and capable of controlling the light-emitting of the light-emitting elements. The list also includes at least another element identification data, and the key light-emitting element list is used for the control unit to control the light-emitting elements to emit light whose color changes with the screen displayed by the display device.

Another object of the present invention is to provide a computer program product that enables the light-emitting element position identification system to implement the light-emitting element position identification method.

The computer program product of the present invention includes an application program. When the application program is loaded and executed by an electronic device, the electronic device can complete the light-emitting element position identification method as described in any of the foregoing embodiments.

The effect of the present invention is that the light-emitting element position identification system can instantly identify the light-emitting element at a specific position of the back cover, and output the key light-emitting element list to the control unit for the control unit to check the light-emitting elements Realize the luminous control of Ambilight technology. In this way, the light-emitting element position identification system enables the light-emitting device to be universally used in display devices of various sizes, and enables display devices that are not originally equipped with Ambilight technology to have the Ambilight function.

Before the present invention is described in detail, it should be noted that the "electrical connection" mentioned in this patent specification refers to a wired electrical connection between multiple electronic devices/devices/components connected through conductive materials, and through wireless communication Technology for radio connection for wireless signal transmission. Moreover, the “electrical connection” mentioned in this patent specification also refers to the “direct electrical connection” formed by the direct connection between two electronic equipment/devices/components, and the “direct electrical connection” between two electronic equipment/devices/components "Indirect electrical connection" formed by connecting other electronic equipment/devices/components.

Referring to FIG. 2, an embodiment of the light-emitting element position identification system 1 of the present invention is applicable to a display device 2 and a light-emitting device 3. The display device 2 can be, for example, a television or a computer screen device, and the display device 2 includes a screen 21 facing the front side of the display device 2 and a back cover 22 facing the rear side of the display device 2. The light-emitting device 3 is disposed on the display device 2, and includes a plurality of light-emitting elements D arranged around the back cover 22 and exposed on the back cover 22, and a light-emitting element D electrically connected to the light-emitting elements D and capable of A control unit 31 that controls the light-emitting elements D to emit light. Specifically, each light-emitting element D is, for example, a light-emitting diode, and the control unit 31 is, for example, a driving controller for controlling the light-emitting of the light-emitting diodes.

In the description of this embodiment, the total number of the light-emitting elements D is thirty-two as an example, and for the convenience of subsequent description, the light-emitting element D in the lower left corner of the light-emitting elements D in FIG. Element D is used as the first light-emitting element D (that is, the light-emitting element D1 shown in FIG. 2), and the other light-emitting elements D are sequentially numbered in a clockwise direction. Therefore, it is located on the back cover of the display device 2. The four light-emitting elements D at the four corners of 22 will be the first, seventh, seventeenth, and twenty-third light-emitting elements D (that is, the light-emitting element D1 shown in FIG. Element D7, light-emitting element D17, and light-emitting element D23). It is supplemented that the light-emitting elements D do not have to be arranged in a full circle as shown in FIG. 2. For example, the light-emitting elements D may also be arranged only on the top side edge and the left and right sides of the back cover 22. The two side edges, or it can be arranged only on the left and right sides of the back cover 22. In addition, the distance between the light-emitting elements D can be adjusted freely according to the actual situation, and it is not necessary to be mutually as shown in FIG. 2 Arranged equidistantly.

The light emitting element position identification system 1 includes a photographing unit 11 and a processing unit 12 electrically connected to the photographing unit 11. In this embodiment, the photographing unit 11 and the processing unit 12 may be implemented together as a mobile device (such as a smart phone or a tablet computer). More specifically, the photographing unit 11 is, for example, a mobile device. It has a shooting lens, and the processing unit 12 is, for example, a processor of the mobile device. However, in other embodiments, the photographing unit 11 can also be implemented as an IP camera, and the processing unit 12 can be implemented as a notebook computer or a desktop computer, for example, Or it is implemented as the processor of the display device 2 itself, and is not limited to this embodiment.

It is further explained that before the light-emitting element position identification system 1 of this embodiment is actually used in the display device 2 and the light-emitting device 3, preferably, the display device 2 is suitable for being installed on an opaque wall. Previously, so that the back cover 22 of the display device 2 faces the wall and is opposed to the wall of the wall at intervals, so that the light emitted by the light-emitting elements D can be reflected by the wall. On the other hand, the photographing unit 11 is suitable to be pre-arranged on the front side of the display device 2 so that the screen 21 of the display device 2 is located within the photographing range of the photographing unit 11 as a whole. In another aspect, the display device 2 is adapted to be switched to a power-off state, so that the screen 21 of the display device 2 appears as a nearly black rectangle in the shooting range of the shooting unit 11. Moreover, if the brightness of the surrounding environment of the display device 2 can be reduced as much as possible, and other light sources besides the light-emitting elements D around the display device 2 are turned off, the correct operation of the light-emitting element position identification system 1 can be facilitated.

Referring to FIGS. 2 and 3 at the same time, the following exemplarily describes in detail how the light-emitting element position identification system 1 of this embodiment implements a light-emitting element position identification method for the display device 2 and the light-emitting device 3.

First, in step S1, the processing unit 12 uses the first light-emitting element D (that is, the light-emitting element D1 shown in FIG. 2) as a light-emitting element under test, and controls the light-emitting element under test through the control unit 31 The element emits light. It is added that since the total number of the light-emitting elements D is thirty-two in this embodiment, the processing unit 12 controls the light-emitting element D1 to emit light, for example, by generating a 32-bit first control signal , And output the second control signal to the light emitting elements D through the control unit 31. The first control signal can be, for example, "1000 0000… 0000", that is, a digital signal whose most significant bit is 1, and the other 31 bits are all 0. Next, proceed to step S2.

In step S2, when the light-emitting element under test emits light, the processing unit 12 controls the photographing unit 11 to shoot to obtain a photographed image M (exemplarily shown in FIG. 3). Next, proceed to step S3.

In step S3, the processing unit 12 performs an image recognition process on the captured image M. Referring to FIGS. 2, 4 and 5 at the same time, in this embodiment, the processing unit 12 performs the image recognition procedure on the captured image M in the following manner.

First, in the sub-step S31, the processing unit 12 first recognizes a screen part Ps of the screen 21 of the display device 2 in the shot image M. Since how the processing unit 12 recognizes the screen part Ps is not the focus of this patent specification, the details are not described here. Next, proceed to sub-step S32.

In sub-step S32, the processing unit 12 generates a grid G composed of a plurality of rectangular parts, and overlays the grid G on the screen part Ps in the shot image M as shown in FIG. 5, by Therefore, the processing unit 12 defines a plurality of regions existing in the shot image M. Next, proceed to sub-step S33.

In sub-step S33, the processing unit 12 selects a plurality of key region parts P from the region parts. In this embodiment, the total number of the key area parts P is four, and each key area part P presents one of the corners of the edge of the display device 2 (which may be, for example, the outer frame of the display device 2). One of the vertices), but not limited to this. In other words, in this embodiment, the four key areas correspond to the four corners of the screen portion Ps of the shot image M, that is, the four corners of the display device 2 respectively. Next, proceed to sub-step S34.

In sub-step S34, the processing unit 12 determines whether one of the four key area parts P meets a color matching condition. Specifically, for each key region part P, the color matching condition includes a first sub-condition and a second sub-condition, and when both the first sub-condition and the second sub-condition are met, the processing The unit 12 determines that the key area part P meets the color matching condition.

In this embodiment, the first sub-condition represents that there is a target color part in the key area part P, and the target color part refers to the key area part P showing the light emitted by the light-emitting element under test. Color part. For example, assuming that the light emitted by the light-emitting element under test in step S1 is blue light, the target color part refers to the part of the key region P that appears blue.

On the other hand, the second sub-condition represents that the ratio between the area of the target color portion and the area of the key region portion P is greater than or equal to a predetermined threshold. In this embodiment, the predetermined threshold value may be implemented as 90%, in other words, the second sub-condition of this embodiment represents that the area of the target color part occupies 90% of the area of the key region part P Or more than 90%, but not limited to this.

In particular, if the processing unit 12 determines that the key area part P meets the color matching condition, it means that the position of the light-emitting element under test on the back cover 22 of the display device 2 is located on the screen 21 corresponding to the The position behind the key area P. For example, if the light-emitting element under test that currently emits blue light is the light-emitting element D1 in the lower left corner of FIG. 2, the blue light emitted by the light-emitting element D1 will be located on the rear side of the display device 2. The wall is reflected, and the key area part P in the lower left corner of FIG. 4 is almost filled with blue. Therefore, the processing unit 12 will determine that the key area part P in the lower left corner of FIG. Color matching conditions.

After the processing unit 12 determines whether one of the key regions P meets the color matching condition, the image recognition procedure ends.

Referring to FIGS. 2, 3 and 5 at the same time, after the processing unit 12 performs the image recognition procedure on the shot image M, step S4 is then performed

In step S4, the processing unit 12 determines whether the captured image M meets a light-emitting position matching condition. Specifically, the light-emitting position matching condition represents that one of the four key area parts P matches the color Match conditions. If the judgment result of the processing unit 12 is yes, then step S5 is performed. On the other hand, if the result of the judgment by the processing unit 12 is no, then step S6 is performed next.

In step S5, when the processing unit 12 determines that the captured image M meets the light-emitting position matching condition, the processing unit 12 generates an element identification data indicating the light-emitting element under test. The element identification data may be, for example, the The number of the tested light-emitting element, but not limited to this. Next, proceed to step S6.

In step S6, when the processing unit 12 determines whether the current light-emitting element under test is the last of the light-emitting elements D, in this embodiment, the last one of the light-emitting elements D This is, for example, the light-emitting element D32 shown in FIG. 2. If the judgment result of the processing unit 12 is no, then step S7 is performed. On the other hand, if the judgment result of the processing unit 12 is yes, then step S9 is performed next.

In step S7, when the processing unit 12 determines that the current light-emitting element under test is not the last of the light-emitting elements D, the processing unit 12 uses the next light-emitting element D of the current light-emitting element under test as A new light-emitting element under test is created, and the light-emitting element under test is controlled to emit light through the control unit 31. In other words, if the currently tested light-emitting element is the Nth among all the light-emitting elements D, the processing unit 12 will perform the (N+1)th of the light-emitting elements D in this step The light-emitting element D serves as a new light-emitting element under test. For example, if the current light-emitting element under test is the light-emitting element D1 in FIG. 2, then the processing unit 12 will use the light-emitting element D2 in FIG. 2 as a new light-emitting element under test, and pass the control unit 31 controls the light emitting element D2 to emit light. It is supplemented that the processing unit 12 controls the light-emitting element D2 to emit light, for example, to generate a 32-bit second control signal, and the first control signal may be, for example, "0100 0000...0000", that is, an addition A digital signal whose second highest bit is 1, and the other 31 bits are all 0s. Next, proceed to step S8.

In step S8, the processing unit executes steps S2 to S5 again. Specifically, except that the light-emitting element D used as the light-emitting element under test is different from the aforementioned steps S2 to S5, the processing and judgment performed by the processing unit 12 in step S8 are the same as those of the aforementioned steps S2 to S5. Same for S5. Then, step S6 is performed again.

In step S9, when the processing unit 12 determines that the current light-emitting element under test is the last of the light-emitting elements D, the processing unit 12 generates a key light-emitting element list, and adds the key light-emitting element list Output to the control unit 31. In terms of the arrangement of the light-emitting elements D in FIG. 2, the key light-emitting element list in this embodiment includes four element identification data, and the four element data respectively indicate the light-emitting elements in FIG. D1, the light-emitting element D7, the light-emitting element D17, and the light-emitting element D23, that is, the four light-emitting elements D located at the four corners of the back cover 22 of the display device 2. In addition, the key light emitting element list is used for the control unit 31 to define the relative positional relationship between the light emitting elements D and the screen 21 of the display device 2, thereby controlling the light emitting elements D to emit colors as The light changed by the picture displayed on the screen 21 realizes the light emission control of the Ambilight technology. It is supplemented that since the light-emitting elements D are arranged in sequence, for the control unit 31, it is only necessary to first define which light-emitting element D is located on the back cover 22 of the display device 2. The corners can then be used to define the relative positional relationship between other light-emitting elements D and the screen 21 of the display device 2.

The foregoing is an example of the method for identifying the position of the light-emitting element of this embodiment.

It is supplemented that, in this embodiment where the processing unit 12 is implemented as a processor of a mobile device, the mobile device can implement this implementation by, for example, loading and executing an application included in a computer program product Examples of the position identification method of the light-emitting element. In more detail, in this embodiment, the computer program product is, for example, built in the control unit 31 of the light-emitting device 3, and the whole of the light-emitting device 3 is, for example, used as a streamer capable of the display device 2 Accessories products with colorful features. That is to say, in this embodiment, the processing unit 12 may, for example, first connect to the control unit 31 and obtain the application program from the control unit 31, and then implement the light emitting element after the application program is loaded and executed The position identification method, by this, the accessory product can not only enable the display device 2 that is not originally equipped with Ambilight technology, but also have the Ambilight function, and can also be used in other display devices of various sizes.

It is supplemented that, in other embodiments, the processing unit 12 may also download the computer program product from the Internet to obtain the application program, or read records from a computer storing the computer program product. The medium (such as an optical disc, a memory card, a flash drive with a USB interface, a hard disk, or other types of data carriers) obtains the application program, and is not limited to this embodiment. In addition, when a single electronic device or a combination of multiple electronic devices has the same functions as the photographing unit 11 and the processing unit 12 of this embodiment, and is loaded and executed the application, the application can also make the (etc.) The electronic device completes the method for identifying the position of the light-emitting element of this embodiment.

In summary, by implementing the light-emitting element position identification method on the display device 2 and the light-emitting device 3, the light-emitting element position identification system 1 can instantly identify the light-emitting element D located at the corner of the back cover 22, and The key light-emitting element list including the element identification data is output to the control unit 31, so that the control unit 31 can realize the light emission control of the light-emitting elements D by the Ambilight technology. It is worth noting that the light-emitting element The position identification system 1 implements the method for identifying the position of the light-emitting element. The light-emitting device 3 (also used as the accessory product in this embodiment) can not only enable the display device 2 that is not originally equipped with Ambilight technology, but also have the Ambilight function , So that the light-emitting device 3 can be universally used in other display devices of various sizes, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1: Light-emitting element position identification system 11: Shooting unit 12: Processing unit 2: display device 21: screen 22: back cover 3: Light-emitting device 31: control unit D’, D1’, D5’, D12’, D16’: light emitting element D, D1, D2, D7, D17, D23, D32: light-emitting element 80A: The first display device 80B: second display device 90A: The first light-emitting unit 90B: second light emitting unit M: Take an image P: key area part Ps: Screen part G: grid S1~S9: steps S31~S34: Sub-step

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a schematic diagram exemplarily showing a first display device, a first light-emitting unit disposed on the first display device, a second display device, and a second display device in the prior art The second light-emitting unit. FIG. 2 is another schematic diagram illustrating an exemplary embodiment of the light-emitting element position identification system of the present invention in cooperation with a display device and a light-emitting device; FIG. 3 is a flowchart illustrating how the embodiment implements a method for identifying the position of a light-emitting element on the display device and the light-emitting device; FIG. 4 is another flowchart illustrating how to perform an image recognition process on a shot image in this embodiment; and Fig. 5 is another schematic diagram illustrating the shot image exemplarily.

S1~S9: steps

Claims (13)

A method for identifying the position of a light-emitting element is implemented by a light-emitting element position identification system on a display device and a light-emitting device. The display device includes a back cover, the light-emitting device includes a plurality of light-emitting elements arranged on the back cover, and the light-emitting element The device position recognition system includes a photographing unit and a processing unit; the light emitting device position recognition method includes: (A) In the case where a tested light-emitting element among the light-emitting elements emits light, the processing unit controls the photographing unit to shoot to obtain a photographed image; (B) When the processing unit determines that the shot image meets a light-emitting position matching condition, it generates a device identification data indicating the light-emitting element under test, and the light-emitting position matching condition is related to a plurality of key area parts in the shot image The color of each key area shows the edge of the display device; and (C) The processing unit generates and outputs a key light emitting element list containing at least the element identification data. The method for identifying the position of a light-emitting element according to claim 1, wherein in step (B), each key area part presents one corner of the edge of the display device, and the light-emitting position matching condition includes the key area parts One of the key regions in the CCD has a target color part showing the color of the light emitted by the light-emitting element under test. The method for identifying the position of a light-emitting element according to claim 2, wherein, in step (B), the light-emitting position matching condition further includes that the ratio between the area of the target color part and the area of the key region part is greater than or equal to a predetermined Threshold value. According to the method for identifying the position of the light-emitting element according to claim 1, the back cover of the display device faces the rear side of the display device, and the display device is adapted to be arranged in front of a wall so that the back cover of the display device faces the Wall; wherein, in step (A), the photographing unit is to photograph the display device from the front side of the display device. The method for identifying the position of a light-emitting element according to claim 1, further comprising before step (A): (D) the processing unit controls the light-emitting element under test to emit light. The method for identifying the position of a light-emitting element according to claim 1, wherein, in step (D), the processing unit outputs the key light-emitting element list to a light-emitting device that is included in the light-emitting device and can control the light-emitting elements to emit light. The control unit, the key light-emitting element list further includes at least another element identification data, and the key light-emitting element list is used for the control unit to control the light-emitting elements to emit light whose color changes with the screen displayed by the display device. A light-emitting element position identification system is suitable for a display device and a light-emitting device. The display device includes a back cover. The light-emitting device includes a plurality of light-emitting elements arranged on the back cover. The light-emitting element position recognition system includes: A filming unit; and A processing unit electrically connected to the photographing unit; Wherein, when a tested light-emitting element among the light-emitting elements emits light, the processing unit controls the photographing unit to shoot to obtain a photographed image, and when the processing unit determines that the photographed image meets a light-emitting position matching condition Generate a device identification data indicating the light-emitting device under test, the light-emitting position matching condition is related to the color of a plurality of key area parts in the captured image, and each key area part presents the edge of the display device, the processing The unit generates and outputs a key light emitting component list including at least the component identification data. The light-emitting element position identification system according to claim 7, wherein each key area part presents one corner of the edge of the display device, and the light-emitting position matching condition includes one of the key area parts There is a target color part showing the color of the light emitted by the light-emitting element under test. The light-emitting element position identification system according to claim 8, wherein the light-emitting position matching condition further includes that the ratio between the area of the target color portion and the area of the key region portion is greater than or equal to a predetermined threshold. According to the light-emitting element position identification system of claim 7, the back cover of the display device faces the rear side of the display device, and the display device is adapted to be disposed in front of a wall so that the back cover of the display device faces the Wall; wherein, the photographing unit is to photograph the display device from the front side of the display device. The light-emitting element position identification system according to claim 7, wherein the processing unit further controls the light-emitting element under test to emit light before controlling the photographing unit to perform photographing. The light emitting element position identification system according to claim 7, wherein the processing unit outputs the key light emitting element list to a control unit included in the light emitting device and capable of controlling the light emitting of the light emitting elements, and the key light emitting element The list also includes at least another element identification data, and the key light-emitting element list is used for the control unit to control the light-emitting elements to emit light whose color changes with the screen displayed by the display device. A computer program product includes an application program. When the application program is loaded and executed by an electronic device, the electronic device can complete the position identification method of the light-emitting element as described in any one of claim items 1 to 6.

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