CN111190284A - Peep-proof device and method and display screen - Google Patents
Peep-proof device and method and display screen Download PDFInfo
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- CN111190284A CN111190284A CN201811351002.XA CN201811351002A CN111190284A CN 111190284 A CN111190284 A CN 111190284A CN 201811351002 A CN201811351002 A CN 201811351002A CN 111190284 A CN111190284 A CN 111190284A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
Abstract
The disclosure relates to a peep-proof device, a peep-proof method and a display screen, and relates to the technical field of display. The disclosed apparatus includes: the eyeball tracking assembly, the controller and the light guide plate; the eyeball tracking component is configured to determine the sight line direction of the user and send the sight line direction to the controller; the controller is configured to adjust an exit direction of the light guide plate according to the line of sight direction so that the light is emitted in the exit direction. The anti-peeping device can adjust the emergent direction of light according to the sight of a user, and then can enable the light to shoot into the eyes of the user along the sight direction of the user, and the direction outside the emergent direction does not have the light to be shot out, so that the anti-peeping effect is achieved, convenience is brought to the user to watch the display screen at different angles, and the flexibility of the display angle is improved. And the user experience is improved. In addition, the display is carried out aiming at the visual angle of the user, the visual angle is reduced, the peeping range is reduced, the leakage of personal information is effectively prevented, and the safety of personal privacy is improved.
Description
Technical Field
The disclosure relates to the technical field of display, in particular to a peep-proof device, a peep-proof method and a display screen.
Background
At present, internet of things terminals are increasingly diversified, and when a user uses a Point of Sale (POS) Machine, an Automatic Teller Machine (ATM), public code scanning payment, supermarket cashier mobile payment and a hospital terminal to check personal case information in a public place, others may see your screen information, so that personal privacy information has a great exposure risk.
At present, one way of preventing peeping is to attach an anti-peeping film to a display screen, the anti-peeping film enables contents displayed on the screen to be read by a user, a visible area is 60 degrees, for example, and only a black picture can be seen by anyone viewing at two sides.
Disclosure of Invention
The inventor finds that: in the existing peep-proof method, a user watches a screen in a relatively fixed angle with the screen, and if the user cannot be positioned in the relatively fixed angle range with the screen under the conditions of environmental congestion and the like, the content of the screen is invisible to the user, so that the user experience is poor.
One technical problem to be solved by the present disclosure is: how to be under the condition of peep-proof, convenience of customers watches the display screen at different angles, promotes user experience.
According to some embodiments of the present disclosure, there is provided a peeping prevention device comprising: the eyeball tracking assembly, the controller and the light guide plate; the eyeball tracking component is configured to determine the sight line direction of the user and send the sight line direction to the controller; the controller is configured to adjust an exit direction of the light guide plate according to the line of sight direction so that the light is emitted in the exit direction.
In some embodiments, the light guide plate comprises a grating.
In some embodiments, the controller is configured to adjust an angle of the light guide plate with respect to the incident light ray according to the line-of-sight direction so that the light ray is emitted in an exit direction corresponding to the line-of-sight direction.
In some embodiments, the gratings include gratings arranged in a horizontal direction and gratings arranged in a vertical direction.
In some embodiments, the controller is configured to adjust an angle of the gratings arranged in the vertical direction with respect to the incident light ray according to an angle of the line-of-sight direction with respect to the horizontal direction, and adjust an angle of the gratings arranged in the horizontal direction with respect to the incident light ray according to an angle of the line-of-sight direction with respect to the vertical direction, so that the light ray is emitted in an emission direction corresponding to the line-of-sight direction.
In some embodiments, the controller is configured to adjust the exit direction of the light guide plate according to the line of sight direction if the angle at which the line of sight direction changes is greater than a preset angle.
In some embodiments, the controller is configured to determine an angular range of the exit direction of the light guide plate according to the range of the line-of-sight direction variation, thereby adjusting the exit direction of the light guide plate.
In some embodiments, the eye tracking component is configured to identify whether the user is a legitimate user, in which case the user is a legitimate user, determine the gaze direction of the user, and send to the controller.
According to further embodiments of the present disclosure, there is provided a display screen including: the anti-peeping device of any of the preceding embodiments.
According to still other embodiments of the present disclosure, there is provided a peeping prevention method including: the eyeball tracking component determines the sight direction of the user and sends the sight direction to the controller; the controller adjusts the emergent direction of the light guide plate according to the sight line direction so as to enable the light rays to be emitted along the emergent direction.
In some embodiments, the controller adjusts an angle of the light guide plate with respect to the incident light according to the line-of-sight direction, so that the light is emitted in an emitting direction corresponding to the line-of-sight direction.
In some embodiments, the light guide plate comprises a grating; the grating comprises a grating arranged along the horizontal direction and a grating arranged along the vertical direction; the controller is configured to adjust an angle of the gratings arranged in the vertical direction with respect to the incident light ray according to an angle of the sight line direction with respect to the horizontal direction, and adjust an angle of the gratings arranged in the horizontal direction with respect to the incident light ray according to an angle of the sight line direction with respect to the vertical direction, so that the light ray is emitted in an emission direction corresponding to the sight line direction.
In some embodiments, the controller adjusts the emission direction of the light guide plate according to the line of sight direction if the angle at which the line of sight direction changes is greater than a preset angle.
In some embodiments, the controller determines an angular range of the exit direction of the light guide plate according to the range of the line-of-sight direction variation, thereby adjusting the exit direction of the light guide plate.
In some embodiments, the eye tracking component identifies whether the user is a legitimate user, and in the event that the user is a legitimate user, determines the direction of the user's gaze and sends it to the controller.
The peep-proof device comprises an eyeball tracking assembly, a controller and a light guide plate, wherein the eyeball tracking assembly can track the sight direction of a user, and then the controller adjusts the emergent direction of the light guide plate according to the sight direction so as to enable light rays to be emitted along the emergent direction. The anti-peeping device can adjust the emergent direction of light according to the sight of a user, and then can enable the light to shoot into the eyes of the user along the sight direction of the user, and the direction outside the emergent direction does not have the light to be shot out, so that the anti-peeping effect is achieved, convenience is brought to the user to watch the display screen at different angles, and the flexibility of the display angle is improved. And the user experience is improved. In addition, the display is carried out aiming at the visual angle of the user, the visual angle is reduced, the peeping range is reduced, the leakage of personal information is effectively prevented, and the safety of personal privacy is improved.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 shows a schematic structural view of a peep prevention device of some embodiments of the present disclosure.
Fig. 2A illustrates a display effect schematic diagram of a peep prevention device of some embodiments of the present disclosure.
Fig. 2B shows a schematic view of a display effect of the peep prevention device according to other embodiments of the present disclosure.
FIG. 3 illustrates a schematic structural diagram of a display screen of some embodiments of the present disclosure.
Fig. 4 illustrates a flow diagram of a method of anti-peeping according to some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The present disclosure provides a peep prevention device, described below in conjunction with fig. 1.
Fig. 1 is a block diagram of some embodiments of the disclosed privacy device. As shown in fig. 1, the apparatus 10 of this embodiment includes: an eye-tracking assembly 110, a controller 120, and a light guide plate 130.
The eye tracking component 110 is configured to determine the gaze direction of the user and send to the controller 120.
In some embodiments, the eye tracking component 110 is configured to determine a direction of a user's gaze from the captured images of the user's eyes. Further, the eye tracking assembly 110 may include a light source module, an image sensor, and a microprocessor. The light source module may be used to emit invisible light to the eyes of the user. The image sensor is used for receiving the invisible light returned by the eye part to form an eye part image. The microprocessor is used for determining the sight direction of the user according to the eye image. The eyeball tracking algorithm belongs to the prior art, and is not described herein again. The eye tracking assembly 110 may not include a microprocessor and is configured to capture an image of the user's eyes and determine the direction of the user's gaze from the image of the eyes by the controller 120.
In some embodiments, the eye tracking component 110 may further include an iris recognition module for identifying whether the user is a legitimate user. In the event that the user is a legitimate user, the eye tracking component 110 determines the direction of the user's gaze and sends it to the controller. In the case of tracking the eyeballs of the user, the iris feature of the legal user needs to be recorded and stored in a memory of the anti-peeping device, whether the user is the legal user is firstly identified, the anti-peeping function is only started for the legal user, and other illegal users cannot see the content on the display screen.
In some embodiments, the anti-peeping device may be a detachable device provided outside the display screen. Under the condition that the display screen or the terminal to which the display screen belongs is provided with components such as a light source module and an image sensor, for example, a camera is provided on a mobile phone and a computer, the peep-proof device can be connected with the display screen or the terminal to which the display screen belongs through an interface to acquire an eye image of a user shot by the display screen or the terminal to which the display screen belongs, and the eye image is processed by the eyeball tracking component 110 or the controller 120 to determine the sight direction of the user. The peep-proof device can also acquire a power supply through an interface with the display screen or a terminal to which the display screen belongs.
In the case where the peep prevention device belongs to a structure inside the display screen, the eye tracking assembly 110 may include a light source module, an image sensor, and the like on the display screen or the terminal to which the display screen belongs.
The controller 120 is configured to adjust an exit direction of the light guide plate 130 according to the line of sight direction so that the light is emitted in the exit direction.
The light guide plate sets up under the condition of display screen, and the light that the display screen sent is received to the one side of light guide plate, and light is derived to the one side, and corresponding picture then can be seen to the light that user's eyes received the derivation. The light guide plate is used for changing the direction of light rays emitted by the display screen, so that the light rays can be emitted according to a specific angle. The light emitted by the light guide plate has a certain angle range, and the incident light in different areas can be changed into different angles. The light emitted through the light guide plate may form a range of visible regions, as shown in fig. 2A. By adjusting the light guide plate, light can be emitted along different emergent directions, and little or no light of the display screen is emitted in other directions except the emergent direction. Therefore, when the light emitted from the light guide plate corresponds to the sight line direction of a user, the user can see the content displayed by the display screen, and the content displayed by the display screen cannot be seen in other directions. As shown in fig. 2B, the line of sight of the user forms a certain angle with the display screen, and the emitting direction or the emitting range of the light guide plate changes correspondingly with respect to the direction of fig. 2A.
In some embodiments, the controller 120 is configured to adjust the exit direction of the light guide plate according to the line of sight direction if the angle at which the line of sight direction changes is greater than a preset angle. The eye tracking assembly 110 can periodically track the direction of the user's sight, and the user may slightly rotate the eye when viewing the display screen, in which case the light guide plate does not need to be adjusted in the emitting direction. And adjusting the emergent direction of the light guide plate according to the sight direction under the condition that the angle of the change of the sight direction is larger than the preset angle. The viewing direction may be determined according to an angle with the normal direction of the display screen or according to an angle with the incident light of the light guide plate. The line-of-sight direction and the emission direction may be determined in the same reference direction, and the determination is not limited to the illustrated example.
Further, the controller 120 is configured to determine whether the viewing direction is within the range of the emission direction of the light guide plate according to a comparison between the viewing direction and the range of the emission direction of the light guide plate, and adjust the emission direction of the light guide plate in a case where the viewing direction is not within the range of the emission direction of the light guide plate, so that the user can view the light emitted by the light guide plate. For example, if the angle between the line of sight of the user and the normal of the display screen is 60 degrees, and the angle between the exit direction of the light guide plate and the normal of the display screen is 0 to 30 degrees, the user cannot see the content displayed on the display screen, and needs to adjust the exit direction of the light guide plate.
In some embodiments, the controller 120 is configured to determine an angular range of the exit direction of the light guide plate according to the range of the line-of-sight direction variation, and adjust the exit direction of the light guide plate. Under the condition that a user watches the display screen, eyeballs can also rotate to a certain degree, and the normal change range of the sight line direction can be determined, so that light rays emitted by the light guide plate can fall into the normal change range of the sight line direction.
The light guide plate 130 may include at least one optical device, such as at least one of a grating and a prism, without being limited to the illustrated example. The optical device can change the direction of the light rays, so that the light rays emitted to the light guide plate change the direction and are emitted. For example, in the case where the light guide plate includes a prism, the reflection angle of the light by the prism may be adjusted, thereby adjusting the outgoing direction of the light. The light guide plate may be a device capable of changing an incident light beam by a fixed angle and emitting the changed incident light beam, for example, a grating plate with a fixed grating pitch. In this case, the angle of the light guide plate with respect to the incident light or the angle with respect to the normal of the display screen may be integrally adjusted according to the viewing direction, so that the exit angle of the light is changed to emit the light in the exit direction corresponding to the viewing direction. If the structure of the light guide plate is adjustable, the light can be emitted along the emergent direction corresponding to the sight line direction by adjusting the structure of the light guide plate. For example, the interval of the grating or the grating period may be dynamically adjusted.
In some embodiments, the light guide plate includes gratings arranged in a horizontal direction and gratings arranged in a vertical direction. The gratings arranged in the horizontal direction and the gratings arranged in the vertical direction may intersect to form a structure of a grid window. Further, the controller 120 is configured to adjust an angle of the grating arranged in the vertical direction with respect to the incident light ray according to an angle of the sight line direction with respect to the horizontal direction, and adjust an angle of the grating arranged in the horizontal direction with respect to the incident light ray according to an angle of the sight line direction with respect to the vertical direction, so that the light ray is emitted in an emission direction corresponding to the sight line direction. The gratings may be arranged in one direction, but the adjustment flexibility is not as high as that of the above-mentioned scheme, and the adjustment of the visible range by the light guide plate is not as high as that of the above-mentioned scheme. Further, the gratings may be arranged in two different directions, but are not limited to the horizontal direction and the vertical direction.
Through the adjustment of horizontal direction and vertical direction, can make the nimble adjustment of the visual angle of anti-peeping device, satisfy the user and watch the demand at different angles.
The peep-proof device of the embodiment comprises the eyeball tracking assembly, the controller and the light guide plate, wherein the eyeball tracking assembly can track the sight direction of a user, and then the controller adjusts the emergent direction of the light guide plate according to the sight direction so as to enable light rays to be emitted along the emergent direction. The anti-peeping device of the embodiment can adjust the emergent direction of the light according to the sight of the user, further enables the light to be shot into the eyes of the user along the sight direction of the user, and no light is shot out from the direction except the emergent direction, so that the anti-peeping effect is achieved, convenience is brought to the user to watch the display screen at different angles, and the flexibility of the display angle is improved. And the user experience is improved. In addition, the display is carried out aiming at the visual angle of the user, the visual angle is reduced, the peeping range is reduced, the leakage of personal information is effectively prevented, and the safety of personal privacy is improved.
The peep-proof device can be independently arranged and detachably arranged on the display screen. The peep-proof device is independently arranged, can be suitable for a common display screen, and is low in manufacturing cost and convenient to use. The anti-peeping device can also be integrated on the display screen. The present disclosure also provides a display screen, described below in conjunction with fig. 3.
FIG. 3 is a block diagram of some embodiments of a display screen of the present disclosure. As shown in fig. 3, the display screen 30 of this embodiment includes: the anti-peeping device 10 of any of the previous embodiments. The peep-proof device can be arranged behind the glass plate of the display screen. The peep-proof device is integrated on the display screen, a processor, a camera and other devices of the terminal can be directly utilized, extra parts do not need to be added, and only the adjustable light guide plate needs to be arranged. The light guide plate disposed in the display screen is not limited to the grating or the prism, and the light guide plate can be implemented by adjusting the arrangement of the liquid crystal molecules.
Some embodiments of the disclosed peep prevention method, i.e. the workflow of the peep prevention device, are described below in connection with fig. 4.
Fig. 4 is a flow chart of some embodiments of a privacy protecting method of the present disclosure. As shown in fig. 4, the method of this embodiment includes: steps S402 to S404.
In step S402, the eye tracking assembly 110 determines the gaze direction of the user and sends it to the controller.
In some embodiments, the eye tracking assembly 110 captures an image of the user's eyes, and the controller 120 determines the direction of the user's gaze from the image of the user's eyes.
In some embodiments, the eye tracking component 110 identifies whether the user is a legitimate user, and in the event that the user is a legitimate user, determines the direction of the user's gaze and sends it to the controller. Alternatively, the eye tracking component 110 collects iris information of the user, and the controller 120 identifies whether the user is a legal user according to the iris information of the user, and determines the direction of sight of the user in case the user is a legal user.
In step S404, the controller 120 adjusts the emitting direction of the light guide plate 130 according to the viewing direction so that the light rays are emitted along the emitting direction.
In some embodiments, the controller 120 adjusts an angle of the light guide plate 130 with respect to the incident light according to the viewing direction, so that the light is emitted along an emitting direction corresponding to the viewing direction.
In some embodiments, the light guide plate comprises a grating. Further, the grating includes, for example, a grating arranged in a horizontal direction and a grating arranged in a vertical direction. The controller 120 adjusts, for example, an angle of the gratings arranged in the vertical direction with respect to the incident light ray according to an angle of the line of sight direction with respect to the horizontal direction, and adjusts an angle of the gratings arranged in the horizontal direction with respect to the incident light ray according to an angle of the line of sight direction with respect to the vertical direction, so that the light ray is emitted in an emission direction corresponding to the line of sight direction.
In some embodiments, the controller 120 adjusts the emission direction of the light guide plate 130 according to the line of sight direction if the angle at which the line of sight direction changes is greater than a preset angle. And the adjustment is not carried out under the condition that the angle of the change of the sight line direction is larger than the preset angle.
In some embodiments, the controller 120 determines an angular range of the exit direction of the light guide plate 130 according to the range of the line-of-sight direction variation, thereby adjusting the exit direction of the light guide plate. The controller 120 determines whether the viewing direction is within the range of the emission direction of the light guide plate by comparing the viewing direction with the range of the emission direction of the light guide plate, for example, and adjusts the emission direction of the light guide plate so that the user can view the light emitted from the light guide plate when the viewing direction is not within the range of the emission direction of the light guide plate.
In the method of the above embodiment, the eyeball tracking assembly may track a sight direction of a user, and the controller adjusts the exit direction of the light guide plate according to the sight direction, so that the light is emitted along the exit direction. According to the method, the emergent direction of the light can be adjusted according to the sight of the user, so that the light can be emitted into the eyes of the user along the sight of the user, and no light is emitted in the directions except the emergent direction, so that the anti-peeping effect is achieved, the user can watch the display screen at different angles conveniently, and the flexibility of the display angle is improved. And the user experience is improved. In addition, the display is carried out aiming at the visual angle of the user, the visual angle is reduced, the peeping range is reduced, the leakage of personal information is effectively prevented, and the safety of personal privacy is improved.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (15)
1. An anti-peeping device comprising: the eyeball tracking assembly, the controller and the light guide plate;
the eye tracking component is configured to determine a gaze direction of a user and send to a controller;
the controller is configured to adjust an exit direction of the light guide plate according to the line of sight direction so that the light is emitted in the exit direction.
2. The anti-peeping device according to claim 1,
the light guide plate includes a grating.
3. The anti-peeping device according to claim 1,
the controller is configured to adjust an angle of the light guide plate with respect to an incident light ray according to the line of sight direction so that the light ray is emitted in an emission direction corresponding to the line of sight direction.
4. The anti-peeping device according to claim 2,
the grating includes gratings arranged in a horizontal direction and gratings arranged in a vertical direction.
5. The anti-peeping device according to claim 4,
the controller is configured to adjust an angle of the grating arranged in the vertical direction with respect to an incident light ray according to an angle of the sight line direction with respect to the horizontal direction, and adjust an angle of the grating arranged in the horizontal direction with respect to the incident light ray according to an angle of the sight line direction with respect to the vertical direction so that the light ray is emitted in an emission direction corresponding to the sight line direction.
6. The anti-peeping device according to claim 1,
the controller is configured to adjust an exit direction of the light guide plate according to the viewing direction if an angle at which the viewing direction changes is greater than a preset angle.
7. The anti-peeping device according to claim 1,
the controller is configured to determine an angular range of the exit direction of the light guide plate according to the sight line direction variation range, thereby adjusting the exit direction of the light guide plate.
8. The anti-peeping device according to any one of claims 1-7,
the eye tracking component is configured to identify whether the user is a legitimate user, determine a gaze direction of the user if the user is a legitimate user, and send the gaze direction to a controller.
9. A display screen, comprising: the anti-peeping device according to any one of claims 1 to 8.
10. A method of anti-peeping, comprising:
the eyeball tracking component determines the sight direction of the user and sends the sight direction to the controller;
the controller adjusts the emergent direction of the light guide plate according to the sight line direction so as to enable the light rays to be emitted along the emergent direction.
11. The peeping prevention method according to claim 10,
and the controller adjusts the angle of the light guide plate relative to the incident light according to the sight line direction so as to enable the light to be emitted along the emergent direction corresponding to the sight line direction.
12. The peeping prevention method according to claim 10,
the light guide plate comprises a grating; the grating comprises a grating arranged along the horizontal direction and a grating arranged along the vertical direction;
the controller is configured to adjust an angle of the grating arranged in the vertical direction with respect to an incident light ray according to an angle of the sight line direction with respect to the horizontal direction, and adjust an angle of the grating arranged in the horizontal direction with respect to the incident light ray according to an angle of the sight line direction with respect to the vertical direction so that the light ray is emitted in an emission direction corresponding to the sight line direction.
13. The peeping prevention method according to claim 10,
and the controller adjusts the emergent direction of the light guide plate according to the sight line direction under the condition that the angle of the change of the sight line direction is greater than a preset angle.
14. The peeping prevention method according to claim 10,
and the controller determines the angle range of the emergent direction of the light guide plate according to the sight line direction change range, so that the emergent direction of the light guide plate is adjusted.
15. The method of preventing peeping according to any one of claims 10-14,
the eyeball tracking component identifies whether the user is a legal user, determines the sight direction of the user under the condition that the user is the legal user, and sends the sight direction to the controller.
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| CN201811351002.XA CN111190284A (en) | 2018-11-14 | 2018-11-14 | Peep-proof device and method and display screen |
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| CN201811351002.XA CN111190284A (en) | 2018-11-14 | 2018-11-14 | Peep-proof device and method and display screen |
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Application publication date: 20200522 |