CN114615490B - Concealed peep-proof safety display method with polarization synchronous modulation - Google Patents
Concealed peep-proof safety display method with polarization synchronous modulation Download PDFInfo
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- CN114615490B CN114615490B CN202011443559.3A CN202011443559A CN114615490B CN 114615490 B CN114615490 B CN 114615490B CN 202011443559 A CN202011443559 A CN 202011443559A CN 114615490 B CN114615490 B CN 114615490B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/398—Synchronisation thereof; Control thereof
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- 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
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a hidden anti-peeping safety display method of polarization synchronous modulation, which is characterized in that a linear polarization white light interference film is covered in front of a display, the interference film can transmit screen light and reflect linear polarization interference light, and at the moment, no matter whether screen data is specially provided for users or servo users, only interference white light can be seen, but the hidden screen light can not be read; the screen data is specially used for users to wear polarized glasses, the polarization direction is orthogonal with the polarization direction of the interference white light, at the moment, the interference white light is effectively filtered, and the screen light content is completely displayed. The invention effectively combines the wireless communication, synchronous modulation, polarization regulation and display hiding technology, can effectively prevent screen data from being specially used for peeping operators behind users to read sensitive information, and provides a solution for peeping and blackening prevention of electronic equipment in a mobile office environment.
Description
Technical Field
The invention belongs to the field of interdisciplinary science of optoelectronics, display optics and wireless communication, and particularly relates to a peep-proof display technology which is characterized in that a linear polarization white light interference film is covered in front of a display, interference white light is filtered by using polarization adjustable glasses, only screen data is specially provided for a user to see a screen through signal driving orthogonal synchronization of the polarization direction of the interference white light and the polarization direction of the adjustable glasses, and particularly relates to a hidden peep-proof safety display method, a hidden peep-proof safety display system and a storage medium which are modulated by polarization synchronization.
Background
In recent years, mobile phones and computers are becoming core platforms for information transmission processing. Unprotected display devices give a visual hacker a multiplicative opportunity to steal sensitive information. According to a investigation result in 2015, the white cap hacker can crack important information of more than 91% of companies through visual means; approximately half of the privacy disclosure occurs within 15 minutes, 52% of which is directly generated by the display device. However, in a mobile office scenario, it is unavoidable that the screen is peeked by non-cooperators; if the surrounding situation is noted at all times in order to ensure that it is not peeped, the working efficiency will be significantly reduced.
The current widely used peep-proof screen is mainly based on ultra-fine shutter technology, and screen data is specially used for a user to read all contents of the screen in a specific angle, and people outside the angle see only dark screens. By the design, the content displayed on the screen can be effectively ensured to be read only by the screen data for a user, and other people cannot read the display information without any trouble. However, the above solution can only prevent the person who is out of a certain angle from reading the display information, and still has no defending ability for the person, telescope, camera, etc. who is dedicated to the user behind the screen data.
Disclosure of Invention
Based on the problems of the prior art, the technical problem to be solved by the invention is how to cover a linear polarization white light interference film in front of a display, hide screen light in linear polarization white light with adjustable polarization direction, and provide screen data for a user to filter interference white light by using polarization glasses with the polarization direction orthogonal to the interference white light so as to read screen display content, and use wireless communication to share synchronous modulation signals for an interference white light source and the polarization glasses in real time so that the polarization directions of the interference white light and the glasses are randomly time-varying but always orthogonal, thereby achieving the peeping-proof display effect that no person except the screen data is specially provided for the user can acquire screen information.
In order to achieve the above effects, the hidden peep-proof security display method for polarization synchronous modulation provided by the invention is applied to a terminal or a server, and comprises the following steps:
firstly, hiding interference of screen light, and aliasing transmitted screen light and deflected linear polarization white light through a polarization white light interference film to generate a white screen effect;
analyzing and extracting screen light, filtering interference white light through polarized glasses specially worn by a user through screen data, and restoring the screen light;
and thirdly, orthogonal synchronization of the polarization directions of the glasses and the interference white light is realized, synchronous modulation signals are distributed to the polarization controllers of the glasses and the polarization controllers of the interference white light sources in real time through a wireless communication means, the polarization directions of the glasses and the interference white light are randomly adjusted, and the orthogonality of the two is ensured in real time.
Preferably, in the first step, a polarized white light interference film is arranged in front of the screen, the screen light is transmitted along the original direction through the interference film, the interference white light is deflected by the interference film and is coaxially transmitted with the screen light, the two paths of light fields are overlapped to generate a white screen effect, and the screen information is hidden in a strong white light background.
Preferably, the polarization direction of the polarized glasses worn by the user is orthogonal and perpendicular to the polarization direction of the interference white light, the screen light passes through the polarized glasses under certain attenuation, the interference white light is attenuated with the maximum extinction ratio, and the screen data is specially used for the user to clearly see the screen light.
Preferably, the third step utilizes the synchronous modulation module and the wireless communication module to randomly and synchronously adjust the polarization directions of the interference white light and the polarized glasses in real time, so that the interference white light and the polarized glasses always keep orthogonal synchronization, the extinction ratio clock of the polarized glasses to the interference white light keeps maximum value, screen data is ensured to be specially used for a user to always see the screen undisturbed, and a peeping person always sees the white screen, thereby realizing the hidden peeping-proof display effect of polarization encryption modulation.
Preferably, the method covers a linear polarization white light interference film in front of the display, the screen light is hidden in the linear polarization white light with adjustable polarization direction, the screen data is specially used for a user to read the display content of the screen by filtering the interference white light through polarized glasses with the polarization direction orthogonal to the interference white light, the peeping person always sees the white screen, and the polarization states of the interference white light and the polarized glasses are randomly time-varying but orthogonal synchronized by adjusting the interference white light and the polarized glasses in real time through wireless communication and synchronous modulation.
Preferably, the interference film has higher transmittance in the whole visible light wave band, and the embedded microprism structure ensures that the polarization state of the parallel incident light field is not changed in the processes of transmission of the vertical incident light field along the far direction, deflection transmission of the parallel incident light field by 90 degrees and deflection.
Preferably, the polarization glasses have high transmittance in the whole visible light band, and can realize the function of a polarization analyzer, namely, the highest transmittance can cut off linear polarization in the orthogonal direction through linear polarization in a certain direction and the highest extinction ratio, and the polarization direction can be modulated.
Preferably, the synchronous modulation module embedded at the screen end or in the glasses distributes synchronous modulation signals in real time, and establishes an information transmission mechanism for disturbing the white light polarization controller and the polarization glasses to distribute random number sequences through the wireless communication module; the interference white light polarization controller reads the random number sequence, compiles the random number sequence into a polarization direction distribution sequence according to a certain rule, and controls the interference white light polarization direction; the polarization glasses read the random number sequence, compile the random number sequence into a polarization direction distribution sequence according to the corresponding rule, and control the polarization direction; the polarization directions of the interference white light and the polarized glasses are controlled to randomly change in real time through real-time synchronous modulation and always keep orthogonal and vertical.
The system for realizing the hidden peep-proof safety display method with the polarization synchronous modulation comprises a synchronous modulation module and a wireless communication module, and further comprises:
the screen light interference hiding module is used for aliasing transmitted screen light and deflected linear polarization white light through the polarization white light interference film, so that a white screen effect appears;
the screen light analysis and extraction module is used for filtering interference white light through polarized glasses specially worn by a user through screen data and restoring screen light;
the glasses and the interference white light polarization direction orthogonal synchronization module are used for distributing synchronous modulation signals to the glasses polarization controller and the interference white light source polarization controller in real time through a wireless communication means, randomly adjusting the polarization directions of the glasses and the interference white light and guaranteeing orthogonality of the two.
A computer readable storage medium having stored thereon a computer program which when executed by a processor implements the above method.
A computer program product comprising computer programs/instructions which when executed by a processor implement the steps of the above method.
Compared with the prior art, the invention provides a brand new design idea of 'optical domain power conversion domain', 'frequency domain power conversion domain', can realize time domain arbitrary waveform generation through frequency domain accurate control, greatly improves programmable compiling capability of all-optical signals and microwave signals, and can be widely applied to the fields of ultra-wideband wireless access, ultra-high frequency microwave transceiving, microwave photon radar, microwave photon detection and the like.
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In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are needed to be used in the embodiments of the present invention will be briefly described, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic diagram of a hidden peep-proof display principle of polarization encryption of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
The invention provides an embodiment of a hidden peep-proof safety display method of polarization synchronous modulation, which is applied to a terminal or a server and comprises the following steps:
the interference of the screen light is hidden, the transmitted screen light and the deflected linear polarization white light are overlapped through the polarization white light interference film, and a white screen effect appears;
analyzing and extracting screen light, filtering interference white light through polarized glasses specially worn by a user through screen data, and restoring the screen light;
the glasses and the interference white light polarization direction are in orthogonal synchronization, synchronous modulation signals are distributed to the glasses polarization controller and the interference white light source polarization controller in real time through a wireless communication means, the glasses and the interference white light polarization direction are randomly adjusted, orthogonality of the glasses and the interference white light source polarization controller is guaranteed in real time, at the moment, screen data are specially provided for users to always see display information undisturbed, and a peeper cannot read the display information under the influence of the interference white light with polarization time variation.
As shown in fig. 1, the invention discloses an embodiment of a polarization encrypted hidden peep-proof display method, which comprises the following steps:
s1, displaying a picture on a screen, wherein screen light can pass through an interference film to be emitted; the white light LED generates line disturbance white light, transmits the line disturbance white light along the direction parallel to the interference film and deflects 90 degrees under the action of an embedded lens of the interference film to coaxially transmit the line disturbance white light and screen light; the white light LED illuminates the whole interference film, and screen data in front of the screen is specially used for users and peepers to see pictures hidden in the interference white light.
S2, screen data are specially used for users to wear polarized glasses, the polarization direction is orthogonal to the polarization direction of the interference white light, the interference white light is restrained by the maximum extinction ratio, and the screen data are specially used for users to clearly see pictures;
s3, the synchronous modulation module generates symmetrical synchronous modulation signals, one synchronous modulation signal is sent to the polarization controller, and the synchronous modulation signals are compiled and converted into randomly distributed interference white light polarization directions; the other path of synchronous modulation signal is sent to the polarized glasses through the wireless communication module, and is compiled and converted into the orthogonal direction of the randomly distributed interference white light polarization direction; the synchronous modulation module continuously updates synchronous modulation signals, and the polarization directions of the interference white light and the polarization glasses are randomly changed but always kept orthogonal. At this time, the screen data is specially used for the user to clearly see the picture all the time, and the peeping person can see the interference white light. It should be noted that, even if the peeper can utilize the analyzer to filter the interference white light, the synchronization with the polarization direction of the interference white light cannot be maintained due to the lack of the synchronization modulation link, that is, the clear picture cannot be stably seen for a long time.
The invention also discloses an embodiment of a polarization encryption hidden peep-proof display method, which comprises the following steps:
firstly, finishing interference hiding of screen light, namely erecting a polarized white light interference film in front of a screen, transmitting the screen light along the original direction through the interference film, deflecting the interference white light through the interference film and coaxially transmitting the interference white light and the screen light, wherein the two paths of light fields are overlapped to generate a white screen effect, and hiding screen information in a strong white light background;
secondly, the analysis and extraction of the screen light are completed, the polarization direction of the polarized glasses worn by the user is orthogonal and perpendicular to the polarization direction of the interference white light, the screen light passes through the polarized glasses under certain attenuation, the interference white light is attenuated with the maximum extinction ratio, and at the moment, the screen data are specially used for the user to clearly see the screen light;
finally, the synchronous modulation module and the wireless communication module are utilized to randomly and synchronously adjust the polarization directions of the interference white light and the polarized glasses in real time, so that the interference white light and the polarized glasses always keep orthogonal synchronization, namely the extinction ratio clock of the polarized glasses to the interference white light keeps maximum value, screen data is ensured to be specially used for a user to always see a screen undisturbed, and a peeping person always sees the white screen, thereby realizing the hidden peeping-proof display effect of polarization encryption modulation.
The invention provides an embodiment of a polarization encryption modulation hidden peep-proof display technology, which is characterized in that a linear polarization white light interference film is covered in front of a display, screen light is hidden in linear polarization white light with an adjustable polarization direction, screen data is specially used for a user to filter out interference white light by using polarization glasses with the polarization direction orthogonal to the interference white light to read screen display content, a peeper always sees a white screen, and wireless communication and synchronous modulation are used for adjusting the interference white light and the polarization glasses in real time to enable the polarization states of the interference white light and the polarization glasses to randomly change time but be in orthogonal synchronization, so that the peep-proof display effect that no person except the screen data is specially used for the user can see the screen content clearly is achieved.
The invention provides an embodiment of a polarization encryption modulation hidden peep-proof display technology, which is characterized in that a linear polarization white light interference film is covered in front of a display, screen light is hidden in linear polarization white light with an adjustable polarization direction, screen data is specially used for a user to filter out interference white light by using polarization glasses with the polarization direction orthogonal to the interference white light to read screen display content, a peeper always sees a white screen, and wireless communication and synchronous modulation are used for adjusting the interference white light and the polarization glasses in real time to enable the polarization states of the interference white light and the polarization glasses to randomly change time but be in orthogonal synchronization, so that the peep-proof display effect that no person except the screen data is specially used for the user can see the screen content clearly is achieved.
In some embodiments, the interference film has higher transmittance in the whole visible light band, and the embedded microprism structure enables the light field vertically incident to be transmitted along the far direction, the light field parallelly incident to be deflected by 90 degrees to be transmitted, and the polarization state of the light field parallelly incident is not changed in the deflection process; the interference film base material, microprism structure, and interference film transmittance parameters are not limited.
In some embodiments, the polarization glasses have higher transmittance in the whole visible light wave band, so that the polarization analyzer function can be realized, namely, the highest transmittance can stop the orthogonal linear polarization through the linear polarization in a certain direction and the highest extinction ratio, and the polarization direction can be modulated; polarizing eyewear materials include, but are not limited to, liquid crystal, titanium dioxide and other high transmittance two-dimensional layered materials in the visible range, and polarization modulation driving means include, but are not limited to, electro-optic, thermo-optic means.
In some embodiments, the synchronous modulation module embedded at the screen end or embedded in the glasses distributes synchronous modulation signals in real time, and establishes an information transmission mechanism for the interference white light polarization controller and the polarization glasses to distribute random number sequences through the wireless communication module; the interference white light polarization controller reads the random number sequence, compiles the random number sequence into a polarization direction distribution sequence according to a certain rule, and controls the interference white light polarization direction; the polarization glasses read the random number sequence, compile the random number sequence into a polarization direction distribution sequence according to the corresponding rule, and control the polarization direction; the polarization directions of the interference white light and the polarized glasses are controlled to randomly change in real time through real-time synchronous modulation and always keep orthogonal and vertical. The synchronous modulation and wireless communication embodiments, protocol types, interface definitions, refresh frequencies, etc. are not limited.
Compared with the prior art, the invention has the following advantages:
firstly, the invention provides a peeping-proof display technology capable of working for a long time, and provides a screen defending mechanism of 'non-self' for a user to dedicate screen data;
secondly, the invention solves the inherent defect that the traditional peep-proof display technology can only prevent the peep-proof screen action outside a certain angle in front of the screen, and has peep-proof capability for people, telescope and camera head which are specially used for the right rear of the user;
in addition, the invention effectively combines wireless communication, synchronous modulation, polarization regulation and display hiding technology, and through the real-time change orthogonal synchronization of the polarization glasses and interference white light, the possibility that a peeper reads screen information through an analyzer is further reduced, and a solution is provided for peeping and blackening prevention of electronic equipment in a mobile office environment.
For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of each element may be implemented in one or more software and/or hardware elements when implemented in the present application.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
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.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (8)
1. A hidden peep-proof safety display method for polarization synchronous modulation is applied to a terminal or a server and comprises the following steps:
firstly, interference hiding of screen light, namely erecting a polarized white light interference film in front of a screen, transmitting the screen light along an original direction through the interference film, generating line-bias interference white light by a dry white light LED, transmitting the line-bias interference white light along a direction parallel to the interference film, deflecting the line-bias interference white light by 90 degrees under the action of an embedded lens of the interference film, coaxially transmitting the line-bias interference white light with the screen light, and hiding screen information in a strong white light background by overlapping two paths of light fields;
analyzing and extracting screen light, wherein the polarization direction of the polarized glasses worn by a user is orthogonal and perpendicular to the polarization direction of the interference white light, and the screen light passes through the polarized glasses under certain attenuation, and the interference white light is attenuated with the maximum extinction ratio to restore the screen light;
and thirdly, orthogonal synchronization of the polarization directions of the glasses and the interference white light is realized, synchronous modulation signals are distributed to the polarization controllers of the glasses and the polarization controllers of the interference white light sources in real time through a wireless communication means, the polarization directions of the glasses and the interference white light are randomly adjusted, and the orthogonality of the two is ensured in real time.
2. The hidden peep-proof safety display method based on the polarization synchronous modulation according to claim 1, wherein the third step utilizes the synchronous modulation module and the wireless communication module to randomly and synchronously adjust the polarization directions of the interference white light and the polarization glasses in real time, so that the two are always in quadrature synchronization, the extinction ratio clock of the polarization glasses to the interference white light is kept at the maximum value, screen data is ensured to be specially used for a user to always see a screen undisturbed, and a peeping person always sees a white screen, thereby realizing the hidden peep-proof display effect of the polarization encryption modulation.
3. The hidden peep-proof safety display method of polarization synchronous modulation according to claim 1 or 2, wherein the method is characterized in that a linear polarization white light interference film is covered in front of a display, screen light is hidden in linear polarization white light with adjustable polarization direction, screen data is specially provided for a user to filter out interference white light by using polarization glasses with orthogonal polarization direction and interference white light to read screen display content, the peeping person always sees a white screen, and the polarization states of the interference white light and the polarization glasses are randomly time-varying but orthogonal synchronized by using wireless communication and synchronous modulation to adjust the interference white light and the polarization glasses in real time.
4. The hidden peep-proof safety display method of polarization synchronous modulation according to claim 1 or 2, wherein the interference film has higher transmittance in the whole visible light band, and the embedded microprism structure enables the vertically incident light field to transmit along the far direction, the parallel incident light field to deflect by 90 degrees for transmission, and the polarization state of the parallel incident light field is not changed in the deflection process.
5. The hidden peep-proof safety display method based on polarization synchronous modulation according to claim 1 or 2, wherein the polarization glasses have higher transmittance in the whole visible light band, and can realize the function of polarization analyzer, namely, the highest transmittance can stop the orthogonal linear polarization by a certain direction linear polarization and the highest extinction ratio, and the polarization direction can be modulated.
6. The hidden peep-proof safety display method of polarization synchronous modulation according to claim 1 or 2, wherein the synchronous modulation, the synchronous modulation module embedded at the screen end or in the glasses distributes synchronous modulation signals in real time, and establishes an information transmission mechanism for disturbing the white light polarization controller and the polarized glasses to distribute random number sequences through the wireless communication module; the interference white light polarization controller reads the random number sequence, compiles the random number sequence into a polarization direction distribution sequence according to a certain rule, and controls the interference white light polarization direction; the polarization glasses read the random number sequence, compile the random number sequence into a polarization direction distribution sequence according to the corresponding rule, and control the polarization direction; the polarization directions of the interference white light and the polarized glasses are controlled to randomly change in real time through real-time synchronous modulation and always keep orthogonal and vertical.
7. A system for implementing the polarization-synchronized-modulated hidden privacy security display method of claims 1-6, comprising a synchronization-modulating module and a wireless communication module, further comprising:
the screen light interference hiding module is used for erecting a polarized white light interference film in front of a screen, screen light is transmitted along the original direction through the interference film, the dry white light LED generates line interference white light, the line interference white light is transmitted along the direction parallel to the interference film and is deflected by 90 degrees to be coaxially transmitted with the screen light under the action of an embedded lens of the interference film, a white screen effect appears when two paths of light fields are overlapped, and screen information is hidden in a strong white light background;
the screen light analysis and extraction module is used for enabling the polarization direction of the polarized glasses specially worn by the user to be orthogonal and perpendicular to the polarization direction of the interference white light, enabling the screen light to pass through the polarized glasses under certain attenuation, enabling the interference white light to be attenuated at the maximum extinction ratio, and restoring the screen light;
the glasses and the interference white light polarization direction orthogonal synchronization module are used for distributing synchronous modulation signals to the glasses polarization controller and the interference white light source polarization controller in real time through a wireless communication means, randomly adjusting the polarization directions of the glasses and the interference white light and guaranteeing orthogonality of the two.
8. A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the method of any of claims 1-6.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102265205A (en) * | 2008-12-23 | 2011-11-30 | 陆逊梯卡有限公司 | Device for generating encrypted images visible only through a polarizing filter and process for making the device |
| CN102421002A (en) * | 2011-11-21 | 2012-04-18 | 杨辉洲 | Method and system for realizing non-interference watching on multi-video contents |
| CN102523460A (en) * | 2011-11-21 | 2012-06-27 | 杨辉洲 | Method and system for displaying confidential content through encryption |
| CN105552105A (en) * | 2016-01-26 | 2016-05-04 | 京东方科技集团股份有限公司 | Display device and driving method and fabrication method thereof, and anti-peeking display system |
| CN107516493A (en) * | 2014-09-17 | 2017-12-26 | 康江辉 | A kind of image display system and its method |
| CN108459429A (en) * | 2017-02-22 | 2018-08-28 | 京东方科技集团股份有限公司 | Display device and its driving method, display system and its display methods |
-
2020
- 2020-12-08 CN CN202011443559.3A patent/CN114615490B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102265205A (en) * | 2008-12-23 | 2011-11-30 | 陆逊梯卡有限公司 | Device for generating encrypted images visible only through a polarizing filter and process for making the device |
| CN102421002A (en) * | 2011-11-21 | 2012-04-18 | 杨辉洲 | Method and system for realizing non-interference watching on multi-video contents |
| CN102523460A (en) * | 2011-11-21 | 2012-06-27 | 杨辉洲 | Method and system for displaying confidential content through encryption |
| CN107516493A (en) * | 2014-09-17 | 2017-12-26 | 康江辉 | A kind of image display system and its method |
| CN105552105A (en) * | 2016-01-26 | 2016-05-04 | 京东方科技集团股份有限公司 | Display device and driving method and fabrication method thereof, and anti-peeking display system |
| CN108459429A (en) * | 2017-02-22 | 2018-08-28 | 京东方科技集团股份有限公司 | Display device and its driving method, display system and its display methods |
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