Eye protection display device

Abstract

The invention provides an eye protection display device. The eye protection display device comprises a display panel, a sensor and a controller. The display panel is used for providing a display picture, and the sensor is used for sensing a plurality of users around the display panel. The controller is electrically connected to the sensor and the display panel, and is used for receiving and analyzing the signal from the sensor. The controller is used for distinguishing the users into a lecturer and a listener, analyzing the area, shielded by the lecturer, of the display panel according to the distance and position angle relation of the lecturer and the listener relative to the display panel, and adaptively adjusting the brightness or blue light proportion of at least one part of the area.

Description

Technical Field

[0001] The present invention relates to a display device, and in particular to an eye protection display device. Background Art

[0002] Modern electronic whiteboards have high brightness to allow the audience to clearly view the screen, but when lecturers stand in front of the electronic whiteboard for a long time to operate and use writing tools, they will be in close contact with the electronic whiteboard for a long time, so their eyes are easily damaged by long-term high-brightness stimulation.

[0003] When the lecturer stands close to the electronic whiteboard, there is a part of the area that is blocked by the lecturer and cannot be seen by the audience, but the lecturer's eyes need to receive the strong light from these areas and may be damaged.

[0004] On the other hand, the high-brightness light emitted by the electronic whiteboard contains strong blue light, and the lecturer's eyes can easily be damaged by receiving high-intensity blue light at a close distance.

[0005] Therefore, it is necessary to design a new type of eye protection display device to overcome the above defects. Summary of the invention

[0006] The object of the present invention is to provide an eye protection display device, which can effectively protect the eyes of the lecturer but does not greatly affect the viewing effect of the audience.

[0007] To achieve the above-mentioned object, the present invention provides an eye protection display device, comprising: a display panel for providing a display image; a sensor for sensing multiple users around the display panel; and a controller, electrically connected to the sensor and the display panel, and used to receive and analyze signals from the sensor. The controller is used to distinguish the multiple users into a lecturer and an audience, and use the distance and position angle relationship between the lecturer and the audience relative to the display panel to analyze the area of ​​the display panel blocked by the lecturer, and adaptively adjust the brightness or blue light ratio of at least a part of the area.

[0008] Preferably, the controller determines that the at least one user is the lecturer in response to a distance of the at least one user relative to the display panel being smaller than a threshold.

[0009] Preferably, the controller can be set by any user and can adaptively adjust the threshold value.

[0010] Preferably, in response to the distances of the multiple users relative to the display panel being smaller than a threshold, the controller determines that the user closest to the display panel among the multiple users is the lecturer, and determines that the other users among the multiple users are the audience.

[0011] Preferably, the controller is used to determine the visual range of the lecturer's eyes from the signal of the sensor, and adjust the brightness or blue light ratio of the portion of the area corresponding to the visual range of the eyes.

[0012] Preferably, the controller is used to analyze the collective relationship of the display panel with respect to a plurality of areas of the audience that are shielded by the lecturer.

[0013] Preferably, the set relationship includes an intersection range, and the intersection range is used as the area of ​​the display panel blocked by the lecturer.

[0014] Preferably, the set relationship includes a shielding degree relationship.

[0015] Preferably, the set relationship includes a union range, and the union range is used as the area of ​​the display panel that is shielded by the lecturer, wherein the low shielding area with a low shielding degree relationship has a correspondingly low brightness or blue light adjustment degree.

[0016] Preferably, the device further comprises an image processor electrically connected to the controller and the display panel, wherein the controller is used to adjust the brightness or blue light ratio of at least a portion of the area by means of the image processor.

[0017] Compared with the prior art, the eye protection display device provided in the embodiment of the present invention utilizes the distance and position angle relationship between the lecturer and the audience relative to the display panel to analyze the area of ​​the display panel blocked by the lecturer and adaptively adjust the brightness or blue light ratio of at least a part of this area. Therefore, the eye protection display device and eye protection display method of the embodiment of the present invention can effectively protect the lecturer's eyes without greatly affecting the viewing effect of the audience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The diagram is a top view of the positional relationship between the eye protection display device, the lecturer, and the audience according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 A front view schematic diagram of an eye protection display device.

[0020] Figure 3 for Figure 1 System block diagram of the eye protection display device.

[0021] Figure 4 FIG. 4 is a flow chart of an eye protection display method according to an embodiment of the present invention.

[0022] Figure 5 The present invention is a flowchart of an eye protection display method for monitoring a user according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to provide a further understanding of the purpose, structure, features and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0024] Figure 1 is a top view schematic diagram of the positional relationship between the eye protection display device, the lecturer and the audience according to one embodiment of the present invention, Figure 2 yes Figure 1 A front view schematic diagram of an eye protection display device, and Figure 3 for Figure 1 Please refer to the system block diagram of the eye protection display device. Figure 1 , Figure 2 and Figure 3 , the eye protection display device 100 of this embodiment includes a display panel 110, a sensor 120 and a controller 130. The display panel 110 is used to provide a display screen. In this embodiment, the display panel 110 is, for example, an electronic whiteboard, a liquid crystal display, an organic light emitting diode display, a light emitting diode display, a plasma display or other appropriate displays. The sensor 120 is used to sense multiple users 50 around the display panel 110. In this embodiment, the sensor 120 may include a camera, a distance sensor or a combination thereof. In one embodiment, the sensor 120 may also include at least two cameras, and the images taken by the sensor 120 at two different perspectives can be used by the controller 130 to calculate the distance between the user 50 and the display panel 110 by triangulation.

[0025] The controller 130 is electrically connected to the sensor 120 and the display panel 110, and is used to receive and analyze the signal from the sensor 120. The controller 130 is used to distinguish the users into the lecturer 52 and the audience 54, and analyze the area A1 of the display panel 110 shielded by the lecturer 52 by using the distance and position angle relationship between the lecturer 52 and the audience 54 relative to the display panel 110, and adaptively adjust the brightness or blue light ratio of at least a part of the area A1, for example, reduce the brightness or blue light ratio of at least a part of the area A1, so as to protect the eyes of the lecturer 52.

[0026] In this embodiment, the controller 130 responds to the distance of at least one user 50 relative to the display panel 110 being less than a threshold value, and determines that the at least one user is a lecturer 52. In addition, in this embodiment, the controller 130 can be set by any user and adaptively adjust the threshold value. In one embodiment, the controller 130 responds to the distance of multiple users 50 relative to the display panel 110 being less than a threshold value, and determines that the user closest to the display panel 110 among the multiple users 50 is the lecturer 52, and determines that the other users among the multiple users 50 are listeners 54.

[0027] In this embodiment, the eye protection display device 100 further includes an image processor 140 (eg Figure 3), which is electrically connected to the controller 130 and the display panel 110, wherein the controller 130 is used to adjust the brightness or blue light ratio of at least a portion of the area A1 through the image processor 140.

[0028] In the eye protection display device 100 of the present embodiment, the distance and position angle relationship between the lecturer 52 and the audience 54 relative to the display panel 110 is used to analyze the area A1 of the display panel 110 shielded by the lecturer 52, and the brightness or blue light ratio of at least a part of this area A1 is adjusted adaptively, so the eye protection display device 100 of the present embodiment can effectively protect the eyes of the lecturer 52. In addition, since the area A1 where the brightness or blue light ratio is adjusted is the area A1 shielded by the lecturer 52 and is less likely to be seen by the audience 54, the adjustment of the brightness or blue light ratio of the area A1 is unlikely to affect the effect of the audience viewing the image screen. Therefore, the eye protection display device 100 of the present embodiment can achieve the best balance between the eye protection of the lecturer 52 and the quality of the image screen seen by the audience 54.

[0029] In this embodiment, the controller 130 is used to determine the visual range R1 of the lecturer 52 from the signal of the sensor 120 (eg Figure 2 ), and adjusts the brightness or blue light ratio of the portion of area A1 corresponding to the eye visual range R1. That is, the controller 130 can adjust the brightness or blue light ratio of only a portion of area A1. However, in another embodiment, the controller 130 can also adjust the brightness or blue light ratio of the entire area A1, for example, by reducing the brightness or blue light ratio of the entire area A1, so as to achieve a better power saving effect while protecting the eyes of the lecturer 52.

[0030] In this embodiment, the controller 130 is used to analyze the collective relationship of the multiple areas of the display panel 110 that are shielded by the lecturer 52 relative to the multiple listeners 54. Figure 1 For example, the area of ​​the right listener 54 blocked by the lecturer 52 is area B1 plus area B2 and area A1, the area of ​​the middle listener 54 blocked by the lecturer 52 is area B2 plus area A1 and area B3, and the area of ​​the left listener 54 blocked by the lecturer 52 is area A1 plus area B3 and area B4. The controller 130 can analyze that the intersection of these areas blocked by the lecturer 52 is area A1, and the union is area B1 plus area B2, area A1, area B3 and area B4. Alternatively, the controller 130 can even analyze the difference of these areas blocked by the lecturer 52.

[0031] In this embodiment, the above-mentioned set relationship includes an intersection range (ie, area A1 ), and the controller 130 uses the intersection range as the area A1 of the display panel 110 that is blocked by the lecturer.

[0032] In another embodiment, the above-mentioned set relationship includes a shielding degree relationship, and the shielding degree relationship of the area where more listeners 54 are shielded by the lecturer 52 is higher, and the shielding degree relationship of the area where fewer listeners 54 are shielded by the lecturer 52 is lower. Figure 1 For example, three listeners 54 are shielded by the lecturer 52 in area A1, so the shielding degree of area A1 is the highest; two listeners 54 are shielded by the lecturer 52 in areas B2 and B3, so the shielding degree relationship between areas B2 and B3 is the second highest; only one listener 54 is shielded by the lecturer 52 in areas B1 and B4, so the shielding degree relationship between areas B1 and B4 is the lowest. In this embodiment, the above-mentioned set relationship includes a union range, and the union range is used as the area of ​​the display panel 110 shielded by the lecturer (this area is, for example, the entirety of areas B1, B2, A1, B3 and B4), wherein the low shielding area (such as areas B1, B2, B3 and B4) with a lower shielding degree relationship has a lower brightness or blue light adjustment degree, such as a smaller reduction degree of brightness or blue light ratio. For example, the shielding degree of area A1 is the highest, so the controller 130 reduces the brightness or the blue light ratio of area A1 to the highest degree; the shielding degree of areas B2 and B3 is the second lowest, so the controller 130 reduces the brightness or the blue light ratio of areas B2 and B3 to the second highest degree; the shielding degree of areas B1 and B4 is the lowest, so the controller 130 reduces the brightness or the blue light ratio of areas B1 and B4 to the lowest degree.

[0033] In one embodiment, the controller 130 is, for example, a central processing unit (CPU), a microprocessor (microprocessor), a digital signal processor (DSP), a programmable controller, a programmable logic device (PLD), or other similar devices or a combination of these devices, and the present invention is not limited thereto. In addition, in one embodiment, each function of the controller 130 can be implemented as a plurality of program codes. These program codes are stored in a memory and executed by the controller 130. Alternatively, in one embodiment, each function of the controller 130 can be implemented as one or more circuits. The present invention is not limited to implementing each function of the controller 130 in software or hardware.

[0034] Figure 4 This is a flow chart of an eye protection display method according to an embodiment of the present invention. Figure 1 , Figure 3 and Figure 4 The eye protection display method of this embodiment can be used Figure 1The eye protection display device 100 is used for execution, but the present invention is not limited thereto. The eye protection display method of this embodiment includes the following steps. First, step S110 is executed, which is to use the display panel 110 to provide a display screen. In addition, step S120 is executed, which is to use the sensor 120 to sense multiple users 50 around the display panel 110. Then, step S130 is executed, which is for the controller 130 to receive and analyze the signal from the sensor 120. Thereafter, step S140 is executed to distinguish these users 50 into lecturers 52 and audiences 54. Next, step S150 is executed, which is to use the distance and position angle relationship between the lecturer 52 and the audience 54 relative to the display panel 110 to analyze the area A1 of the display panel 110 that is blocked by the lecturer 52, and adaptively adjust the brightness or blue light ratio of at least a part of the area A1. Other details of the eye protection display method of this embodiment can refer to the execution details described in the above-mentioned embodiment of the eye protection display device 100, which will not be repeated here. In addition, the eye protection display method of this embodiment can also achieve the advantages and effects that can be obtained by the above-mentioned eye protection display device 100, which will not be repeated here.

[0035] Please refer to Figure 5 In one embodiment, the process for monitoring the user in the eye protection display method is as follows: Figure 5 As shown, it can be Figure 1 The eye protection display device 100 is executed, which may include the following steps. First, execute step T110, which is the controller 130 instructing the sensor 120 to detect the eyes of the user 50. Next, execute step T120, which is to use the controller 130 to determine whether the distance between the eyes of the user 50 and the display panel 110 is less than a threshold. If the judgment result is no, indicating that there is no lecturer 52, then continue to execute step T110 and continue to detect the eyes of the user 50. If the judgment result is yes, then execute step T130, which is to regard the user 50 whose eye distance is less than the threshold as the lecturer 52, and determine the lecturer 52's eye visible range R1 (such as Figure 2 Then, step T140 is executed, which is to adjust the brightness or blue light ratio of the portion of the area A1 of the display panel 110 that is blocked by the lecturer 52 and corresponds to the eye visible range R1 of the lecturer 52. Then, the process returns to step T110 to continue detecting the eyes of the user 50.

[0036] In summary, in the eye protection display device of the embodiment of the present invention, the eye protection display device includes a display panel, a sensor and a controller. The display panel is used to provide a display image, the sensor is used to sense multiple users around the display panel, the controller is electrically connected to the sensor and the display panel and is used to receive and analyze the signal from the sensor. The controller is used to distinguish the multiple users into lecturers and audiences. By utilizing the distance and position angle relationship between the lecturer and the audience relative to the display panel, the area of ​​the display panel blocked by the lecturer is analyzed, and the brightness or blue light ratio of at least a part of this area is adaptively adjusted. Therefore, the eye protection display device and the eye protection display method of the embodiment of the present invention can effectively protect the lecturer's eyes without greatly affecting the viewing effect of the audience.

[0037] Although the present invention is described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify the preferred embodiments of the present invention and should not be construed as limiting the present invention. In order to clearly describe the required components, the proportions in the schematic drawings do not represent the proportional relationship of the actual components.

[0038] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. An eye protection display device, characterized in that: include: A display panel, for providing a display image; A sensor for sensing a plurality of users around the display panel; as well as A controller is electrically connected to the sensor and the display panel and is used to receive and analyze the signal from the sensor. The controller is used to distinguish the multiple users into a lecturer and an audience, and use the distance and position angle relationship between the lecturer and the audience relative to the display panel to analyze the area of ​​the display panel blocked by the lecturer, and adaptively adjust the brightness or blue light ratio of at least a part of the area.

2. The eye protection display device according to claim 1, characterized in that: The controller determines that the at least one user is the lecturer in response to the distance of the at least one user relative to the display panel being smaller than a threshold.

3. The eye protection display device according to claim 2, characterized in that: The controller can be set by any user and can adaptively adjust the threshold value.

4. The eye protection display device according to claim 1, characterized in that: In response to the distances of the multiple users relative to the display panel being smaller than a threshold, the controller determines that the user closest to the display panel among the multiple users is the lecturer, and determines that the other users among the multiple users are the audience.

5. The eye protection display device according to claim 1, characterized in that: The controller is used to determine the visual range of the lecturer's eyes from the signal of the sensor, and adjust the brightness or blue light ratio of the part of the area corresponding to the visual range of the eyes.

6. The eye protection display device according to claim 1, characterized in that: The controller is used for analyzing the collective relationship between the display panel and a plurality of areas shielded by the lecturer relative to a plurality of listeners.

7. The eye protection display device according to claim 6, characterized in that: The set relationship includes an intersection range, and the intersection range is used as the area of ​​the display panel blocked by the lecturer.

8. The eye protection display device according to claim 6, characterized in that: The set relation includes an occlusion degree relation.

9. The eye protection display device according to claim 8, characterized in that: The set relationship includes a union range, and the union range is used as the area of ​​the display panel that is shielded by the lecturer, wherein the low shielding area with a low shielding degree relationship has a correspondingly low brightness or blue light adjustment degree.

10. The eye protection display device according to claim 1, characterized in that: The device also includes an image processor electrically connected to the controller and the display panel, wherein the controller is used to adjust the brightness or blue light ratio of at least a portion of the area through the image processor.

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