CN113536403B - Peep-proof display method based on persistence of vision interference hiding - Google Patents
Peep-proof display method based on persistence of vision interference hiding Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/84—Protecting input, output or interconnection devices output devices, e.g. displays or monitors
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- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
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- G02C7/12—Polarisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/88—Detecting or preventing theft or loss
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
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Abstract
The invention uses the interference white screen to replace the screen image to be displayed at equal frame intervals, covers the polarizer array in front of the display screen to enable the screen image to be orthogonalized with the polarization direction of the interference white screen and conceal the screen image based on the persistence of vision phenomenon, the screen data is specially used for a user to filter the interference white screen to read the screen image by using the polarized glasses, and uses the wireless communication to share the synchronous modulation signal in real time to enable the polarization directions of the interference white screen and the glasses to be randomly time-varying but orthogonalized all the time, so that the peep-proof display effect that no person except the screen data is specially used for the user can acquire the screen information is achieved. The invention effectively utilizes the persistence phenomenon of vision to realize white light hiding of the screen image, can effectively prevent the peeping behavior of the screen data right behind the user, and further realizes the dynamically adjustable screen protection through the wireless channel synchronous signal interaction, thereby providing a simple, easy and reliable technical means for preventing visual hackers in the mobile office environment.
Description
Technical Field
The invention belongs to the field of interdiscipling of optoelectronics, display optics, visual optics and wireless communication, in particular to a peep-proof display technology which replaces screen images by using frame intervals such as interference white screens and tunes the polarization direction in real time, drives orthogonal synchronization to filter the interference white screens by using polarization-adjustable glasses and keys for interfering the white screen directions, and prevents peeping people from seeing the screens by means of persistence of vision, and particularly relates to a peep-proof display method based on persistence of vision interference hiding.
Background
In recent years, unprotected display devices have become the primary target for visual hacking, accounting for 52% of privacy revealing events originating from cell phones and computer screens. In view of the unavoidable office in public places and the impossibility of paying attention to the surrounding situation at any time to the screen data, the peep-proof display technology which enables the screen display content to be read only by the screen data is of great practical value.
The current widely adopted peep-proof screen is mainly based on the ultra-fine shutter technology, and can only see the screen clearly in a certain view field range in front of the display screen, and other positions can only see the black screen. However, the peep-proof screen based on the ultra-fine shutter technology can only realize the function of 'side peep-proof' instead of 'full peep-proof', and has no capability of preventing peeps, cameras and telescopes which are specially used for the rear of the user for 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 achieve the effect of preventing non-cooperators from peeping the screen.
Aiming at the defects in the prior art, the invention aims to provide an anti-peeping display method based on persistence of vision interference hiding, which randomly disassembles a screen image to be displayed into two frames of complementary images, and combines the two frames of images which are spatially misplaced into a blurred image for output by a dual-polarization display array. The screen data is specially used for a user to compensate the light field difference of two frames of images by using binocular parallax compensation glasses, so that information acquired by two eyes can be completely synthesized into a screen image; the wireless communication means is utilized to share the secret key for the binocular parallax compensation glasses and the display array, so that the space offset of the display array can be compensated in real time by the binocular parallax compensation glasses, and the peep-proof display effect that no person except for the screen data is specially provided for the user can see the screen clearly is achieved.
In order to achieve the above effects, the peep-proof display method based on persistence of vision interference concealment provided by the invention uses an interference white screen image to replace a screen image to be displayed, or inserts an interference white screen frame in the middle of the screen image frame, covers a polarizer array in front of the screen, randomly changes the polarization direction according to a frame refresh rate to enable the polarization directions of the screen image and the interference white screen to be time-variant orthogonal, filters the interference white screen through polarized glasses specially worn by a user through screen data and views the screen image, provides synchronous control for the polarization of the glasses and the polarizer array through a wireless communication means, and randomly adjusts the polarization directions of the polarized glasses and the interference white screen to enable the polarization directions of the polarized glasses and the interference white screen to be orthogonal in real time;
and the persistence of vision conceals the screen image to replace the screen images of the separated frames with an interference white screen or directly inserts the interference white screen into the time sequence of the screen images of the adjacent frames to generate the interference image of the alternate display of the screen images and the interference white screen.
Preferably, the method specifically comprises the following steps:
S101, changing a display refreshing mode, replacing a screen image to be displayed with an interference white screen according to a certain frame interval, and covering a polarizer array in front of the display to enable the polarization directions of light fields corresponding to the screen image and the interference white screen to be kept orthogonal;
s102, the screen data is specially used for a user to wear polarized glasses, the polarization direction is parallel to the screen image and orthogonal to the interference white screen, and the interference white screen is effectively filtered;
s103, the polarization controller of the polarization glasses and the polarizer array in front of the screen interact synchronous modulation signals through the wireless communication channel, so that screen data is ensured to be specially used for a user to always see the screen, and a peeping person cannot know the synchronous modulation signal content.
Preferably, the step S101 is performed under the influence of persistence of vision, and the user or the peeper only sees the interference image and cannot read the hidden screen image.
Preferably, the method is that any person can see the blurred image which is formed by overlapping the screen image and the blurred image which interferes with the white screen under the effect of persistence of vision.
Preferably, the method specifically comprises the following steps:
Firstly, generating an interference image, modifying a screen display mode through a software algorithm, replacing a screen image of an adjacent frame with an interference white screen, or directly inserting the interference white screen into a time sequence of the screen image of the adjacent frame to generate an interference image of alternately displaying the screen image and the interference white screen, and utilizing a polarizer array to adjust the polarization direction in real time so that the polarization directions of light fields corresponding to the screen image and the interference white screen are always orthogonal;
step two, completing analysis and extraction of a screen image, wherein the polarization direction of the polarized glasses worn by a user is orthogonal and perpendicular to the polarization direction of the interference white screen, the screen image passes through the polarized glasses and the interference white screen under certain attenuation and is attenuated by the maximum extinction ratio, and at the moment, the screen data is specially used for the user to clearly see the screen image;
and thirdly, the synchronous modulation module and the wireless communication module are utilized to randomly and synchronously adjust the polarization directions of the interference white screen and the polarized glasses in real time, so that the interference white screen and the polarized glasses always keep orthogonal synchronization, the extinction ratio clock of the polarized glasses to the interference white screen keeps maximum value, screen data is ensured to be specially used for a user to always see the screen undisturbed, a peeping person always sees an interference image containing the interference white screen under the influence of the persistence of vision, and finally the peeping-preventing display effect is realized.
Preferably, the polarizer array has higher transmittance in the whole visible light band, and the embedded microstructure enables the transmitted light field to be converted into linear polarization, and the polarization direction can be tuned at high speed.
Preferably, the polarization glasses have higher transmittance in the whole visible light band, realize the function of polarization analyzer, namely, the highest transmittance cuts off the linear polarization in the orthogonal direction through the 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 generates synchronous modulation signals in real time, and establishes an information transmission mechanism for distributing random number sequences for the polarizer array and the polarized glasses through the wireless communication module; the polarizer array reads the random number sequence, compiles the random number sequence into a polarization direction distribution sequence according to a certain rule, and controls the polarization direction of the interference white screen.
The system for realizing the peep-proof display method based on persistence of vision interference hiding comprises a polarizer array, a display, polarized glasses, a synchronous modulation module, a wireless communication module, an interference image generation module, a screen image analysis and extraction module and a polarization direction orthogonal synchronization module,
The interference image generation module is used for replacing a screen image to be displayed by using an interference white screen image or inserting an interference white screen frame in the middle of the screen image frame, covering a polarizer array in front of a screen, and randomly changing the polarization direction according to a frame refreshing rate so as to enable the polarization directions of the screen image and the interference white screen to be orthogonal in time;
the screen image analysis and extraction module is used for filtering the interference white screen through polarized glasses specially worn by a user through screen data and viewing a screen image;
The polarization direction orthogonal synchronization module is used for providing synchronous control for the glasses polarization and the polarizer array through a wireless communication means, and randomly adjusting the polarization directions of the polarized glasses and the interference white screen to enable the polarization directions to be orthogonal in real time.
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.
The invention effectively utilizes the persistence phenomenon of vision to realize white light hiding of the screen image, can effectively prevent the peeping behavior of the screen data right behind the user, and further realizes the dynamically adjustable screen protection through the wireless channel synchronous signal interaction, thereby providing a simple, easy and reliable technical means for preventing visual hackers in the mobile office environment.
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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 the working principle of the peep-proof display based on persistence of vision interference concealment.
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 an anti-peeping display method based on persistence of vision interference hiding, which utilizes an interference white screen image to replace a screen image to be displayed, or inserts an interference white screen frame in the middle of the screen image frame, covers a polarizer array in front of a screen, randomly changes the polarization direction according to a frame refreshing rate to enable the polarization directions of the screen image and the interference white screen to be time-variant orthogonal, filters the interference white screen through polarized glasses specially worn by a user through screen data and views the screen image, provides synchronous control for the polarization of the glasses and the polarizer array through a wireless communication means, and randomly adjusts the polarization directions of the polarized glasses and the interference white screen to enable the polarization directions to be orthogonal in real time.
The invention provides an embodiment of an anti-peeping display method based on persistence of vision interference hiding, which specifically comprises the following steps:
s101, generating an interference image, namely replacing a screen image to be displayed by using an interference white screen image (the frame refreshing rate is unchanged at the moment), or inserting an interference white screen frame (the frame refreshing rate is doubled at the moment) in the middle of a screen image frame, covering a polarizer array in front of a screen, and randomly changing the polarization direction according to the frame refreshing rate to enable the polarization directions of the screen image and the interference white screen to be orthogonal;
S102, analyzing and extracting a screen image, namely filtering interference white screen through polarized glasses specially worn by a user through screen data and viewing the screen image;
s103, orthogonal synchronization of polarization directions, namely synchronous control is provided for the glasses polarization and the polarizer array through a wireless communication means, the polarization directions of the polarization glasses and the interference white screen are randomly adjusted to enable the polarization directions to be orthogonal 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 polarization time-varying interference white screen.
The invention provides an embodiment of an anti-peeping display method based on persistence of vision interference hiding, which comprises the following steps:
s1, repeatedly displaying images to be displayed on a screen according to a certain frame updating rate, and replacing the images to be displayed with interference white screens or other interference pictures according to the sequence of every other frame, wherein the frame updating rate is kept unchanged; or inserting the interference white screen into the middle of adjacent frames of the screen image, and doubling the frame updating rate at the moment;
s2, covering a polarizer array in front of the screen, and modulating the polarization direction according to the frame updating rate so that the polarization direction of the screen image and the polarization direction of the interference white screen immediately behind the screen image are orthogonal;
s3, continuously showing interference images, wherein the interference images comprise screen images and interference white screens;
S4, the screen data is specially used for users to wear polarized glasses, and the polarization direction is orthogonal to the polarization direction of the interference white screen and parallel to the polarization direction of the screen image.
S5, the synchronous modulation module generates synchronous modulation signals, wherein one path of synchronous modulation signals is compiled and converted into randomly distributed interference white screen polarization directions; the other path is sent to the polarized glasses through the wireless communication module, and is compiled and converted into an orthogonal direction interfering with the polarization direction of the white screen.
S6, the synchronous modulation module is continuously updated, and the polarization directions of the interference white screen and the polarization glasses are randomly changed but always kept orthogonal.
In some embodiments, the screen data is dedicated to the user to clearly see the screen image all the time, and the peeper can only see the interference image under the influence of the persistence of vision; even if the peeper can utilize the analyzer to filter the interference white screen, the synchronization with the polarization direction of the interference white screen cannot be maintained due to the lack of the synchronous modulation link, that is, a clear screen image cannot be stably seen for a long time.
As shown in fig. 1, the invention provides an embodiment of a peep-proof display method based on persistence of vision interference hiding, which shows a peep-proof display principle of a peep-proof display technology based on persistence of vision interference hiding:
1. the image to be displayed is repeatedly displayed on the screen according to a certain frame updating rate, the interference white screen (or other interference pictures) is replaced by the image to be displayed according to the sequence of every other frame, and the frame updating rate is kept unchanged at the moment; or inserting the interference white screen into the middle of adjacent frames of the screen image, and doubling the frame updating rate at the moment;
2. covering a polarizer array in front of the screen, and modulating the polarization direction according to the frame updating rate so that the polarization direction of the screen image and the interference white screen immediately behind the screen image are orthogonal;
3. continuously showing the interference images (i.e. the screen image and the interference white screen), the screen content cannot be seen clearly by the user or the peeper no matter whether the screen data is dedicated to the user or the peeper;
4. the screen data is specially used for users to wear polarized glasses, the polarization direction is orthogonal to the polarization direction of the interference white screen (namely, parallel to the polarization direction of the screen image), the interference white screen is restrained by the maximum extinction ratio, and the screen data is specially used for users to clearly see the screen image;
5. The synchronous modulation module generates synchronous modulation signals, wherein one path of synchronous modulation signals is compiled and converted into randomly distributed interference white screen polarization directions; the other path is sent to the polarized glasses through the wireless communication module, and is compiled and converted into an orthogonal direction interfering with the polarization direction of the white screen; the synchronous modulation module is updated continuously, and the polarization directions of the interference white screen and the polarization glasses are changed randomly but always kept orthogonal. At this time, the screen data is specially used for the user to clearly see the screen image all the time, and the peeper can only see the interference image under the influence of the persistence of vision; even if the peeper can utilize the analyzer to filter the interference white screen, the synchronization with the polarization direction of the interference white screen cannot be maintained due to the lack of the synchronous modulation link, that is, a clear screen image cannot be stably seen for a long time.
The invention provides an embodiment of an anti-peeping display method based on persistence of vision interference hiding, which comprises the following steps:
S101, generating an interference image, modifying a screen display mode through a software algorithm, replacing a screen image of an adjacent frame with an interference white screen, or directly inserting the interference white screen into a time sequence of the screen image of the adjacent frame to generate an interference image of alternately displaying the screen image and the interference white screen, and utilizing a polarizer array to adjust the polarization direction in real time so that the polarization directions of light fields corresponding to the screen image and the interference white screen are always orthogonal;
S102, analyzing and extracting a screen image is completed, the polarization direction of the polarized glasses worn by a user is orthogonal and perpendicular to the polarization direction of the interference white screen, the screen image passes through the polarized glasses and the interference white screen under certain attenuation and is attenuated at the maximum extinction ratio, and at the moment, the screen data is specially used for the user to clearly see the screen image;
S103, the synchronous modulation module and the wireless communication module are utilized to randomly and synchronously adjust the polarization directions of the interference white screen and the polarized glasses in real time, so that the interference white screen and the polarized glasses always keep orthogonal synchronization, that is, the extinction ratio clock of the polarized glasses to the interference white screen 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 an interference image containing the interference white screen under the influence of the persistence of vision, and finally the peeping-preventing display effect is realized.
The invention provides an embodiment of an anti-peeping display method based on persistence of vision interference hiding, which is characterized in that an interference white screen is used for replacing a screen image to be displayed at equal frame intervals, a polarizer array is covered in front of a display screen to enable the screen image to be orthogonalized with the polarization direction of the interference white screen, the screen image is hidden based on the persistence of vision phenomenon, screen data is specially used for a user to filter the interference white screen to read the screen image by using polarized glasses, and wireless communication is used for sharing synchronous modulation signals in real time to enable the polarization directions of the interference white screen and the glasses to be orthogonalized randomly but always, so that the anti-peeping display effect that no person except the screen data is specially used for the user can acquire screen information is achieved.
In some embodiments, the persistence-of-view hidden screen image replaces the screen image of the separated frames with the interference white screen, or directly inserts the interference white screen into the adjacent frame screen image time sequence, so as to generate the interference image alternately displayed by the screen image and the interference white screen, and at the moment, the blurred image which is overlapped with the screen image and the interference white screen is seen by anyone under the persistence of view.
In some embodiments, the interference white screen may be replaced by other interference pictures, which is not limited to specific means for modifying the screen display mode, and is not limited to specific technical parameters such as a frame update rate, an interference white screen insertion position, and the like.
In some embodiments, the polarizer array has higher transmittance in the whole visible light band, the embedded microstructure enables the transmitted light field to be converted into linear polarization, and the polarization direction can be tuned at high speed, and the substrate material, microstructure, regulation mode and transmittance parameters of the polarizer are not limited.
In some embodiments, the polarization glasses have higher transmittance in the whole visible light band, so that the polarization analyzer function can be realized, 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.
In some embodiments, the polarized eyewear material includes, but is not limited to, liquid crystal, titanium dioxide, and other high transmittance two-dimensional layered materials in the visible light band, and the polarization modulation driving means includes, but is not limited to, electro-optic, thermo-optic means.
In some embodiments, a synchronous modulation module embedded at a screen end or in glasses in synchronous modulation generates synchronous modulation signals in real time, and an information transmission mechanism is established through a wireless communication module to distribute random number sequences for a polarizer array and polarized glasses.
In some embodiments, the polarizer array in synchronous modulation reads a random number sequence, compiles the random number sequence into a polarization direction distribution sequence according to a certain rule, and controls the polarization direction of the interference white screen.
In some embodiments, polarization glasses in synchronous modulation read random number sequences, compile into polarization direction distribution sequences according to corresponding rules, and control polarization directions.
In some embodiments, the polarization direction of the interference white screen and the polarization glasses is randomly changed in real time and always kept orthogonal through real-time synchronous modulation control in synchronous modulation.
In some embodiments, the synchronous modulation and wireless communication implementations, protocol types, interface definitions, refresh frequencies, etc. are not limited. The system-wide clock synchronization is not limited to the specific embodiment.
The invention provides a system embodiment for realizing the peep-proof display method based on persistence of vision interference concealment, which comprises a polarizer array, a display, polarized glasses, a synchronous modulation module, a wireless communication module, an interference image generation module, a screen image analysis and extraction module and a polarization direction orthogonal synchronization module,
The interference image generation module is used for replacing a screen image to be displayed by using an interference white screen image or inserting an interference white screen frame in the middle of the screen image frame, covering a polarizer array in front of a screen, and randomly changing the polarization direction according to a frame refreshing rate so as to enable the polarization directions of the screen image and the interference white screen to be orthogonal in time;
the screen image analysis and extraction module is used for filtering the interference white screen through polarized glasses specially worn by a user through screen data and viewing a screen image;
The polarization direction orthogonal synchronization module is used for providing synchronous control for the glasses polarization and the polarizer array through a wireless communication means, and randomly adjusting the polarization directions of the polarized glasses and the interference white screen to enable the polarization directions to be orthogonal in real time.
The present invention also provides an embodiment of a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described method.
The invention also provides an embodiment of a computer program which, when executed by a processor, implements the above method.
Compared with the prior art, the invention has the following advantages:
Firstly, the invention provides a peep-proof display technology capable of working for a long time, and provides a long-acting screen protection mechanism for a user for special supply of screen data;
secondly, the invention solves the technical shortboards of the traditional peeping-preventing display technology in the aspects of peeping people, cameras, telescopes and the like right behind the protective screen;
Thirdly, the invention further reduces the possibility that a peeper reads screen information through the polarization analyzer through the real-time change orthogonal synchronization of the polarization glasses and the interference white screen;
in addition, the invention effectively utilizes the persistence of vision phenomenon, and the peep-proof display is completed only by software modification of a screen display mode, low-speed modulation of a polarizer array, wireless communication, clock synchronization, key distribution and other simple operations, so that an important thought reference is provided for peep-proof and black-proof 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 the same piece or pieces of software and/or hardware when implementing 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 variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (7)
1. A peep-proof display method based on persistence of vision interference hiding comprises the steps of generating an interference image, modifying a screen display mode through a software algorithm, replacing a screen image of an inter-frame with an interference white screen, or directly inserting the interference white screen into a time sequence of a screen image of an adjacent frame to generate an interference image alternately displayed by the screen image and the interference white screen, adjusting polarization directions in real time by using a polarizer array to enable light field polarization directions corresponding to the screen image and the interference white screen to be always orthogonal, filtering the interference white screen through polarized glasses specially worn by a user through screen data, and seeing the screen image, providing synchronous control for the polarization of the glasses and the polarizer array through a wireless communication mode, and randomly adjusting the polarization directions of the polarized glasses and the interference white screen to enable the polarization directions to be orthogonal in real time;
The persistence of vision conceals the screen image and replaces the screen image of the frame apart with the interference white screen, or inserts the interference white screen into the screen image time sequence of adjacent frame directly, produces the interference image that screen image and interference white screen alternately show.
2. The peep-proof display method based on persistence of vision interference hiding according to claim 1, specifically comprising:
S101, changing a display refreshing mode, replacing a screen image to be displayed with an interference white screen according to a certain frame interval, and covering a polarizer array in front of the display to enable the polarization directions of light fields corresponding to the screen image and the interference white screen to be kept orthogonal;
s102, the screen data is specially used for a user to wear polarized glasses, the polarization direction is parallel to the screen image and orthogonal to the interference white screen, and the interference white screen is effectively filtered;
s103, the polarization controller of the polarization glasses and the polarizer array in front of the screen interact synchronous modulation signals through the wireless communication channel, so that screen data is ensured to be specially used for a user to always see the screen, and a peeping person cannot know the synchronous modulation signal content.
3. The privacy display method based on persistence of vision interference (persistence of vision) concealment as claimed in claim 2, wherein the step S101 is that under the influence of persistence of vision, both the user and the peeper can only see the interference image and cannot read the hidden screen image.
4. The privacy display method based on persistence of vision interference concealment according to claim 1, wherein the method is that any person sees a blurred image which is formed by overlapping a screen image and an interference white screen under the action of persistence of vision.
5. The peep-proof display method based on persistence of vision interference hiding according to claim 1 or 2, specifically comprising:
Firstly, generating an interference image, modifying a screen display mode through a software algorithm, replacing a screen image of an adjacent frame with an interference white screen, or directly inserting the interference white screen into a time sequence of the screen image of the adjacent frame to generate an interference image of alternately displaying the screen image and the interference white screen, and utilizing a polarizer array to adjust the polarization direction in real time so that the polarization directions of light fields corresponding to the screen image and the interference white screen are always orthogonal;
step two, completing analysis and extraction of a screen image, wherein the polarization direction of the polarized glasses worn by a user is orthogonal and perpendicular to the polarization direction of the interference white screen, the screen image passes through the polarized glasses and the interference white screen under certain attenuation and is attenuated by the maximum extinction ratio, and at the moment, the screen data is specially used for the user to clearly see the screen image;
and thirdly, the synchronous modulation module and the wireless communication module are utilized to randomly and synchronously adjust the polarization directions of the interference white screen and the polarized glasses in real time, so that the interference white screen and the polarized glasses always keep orthogonal synchronization, the extinction ratio clock of the polarized glasses to the interference white screen keeps maximum value, screen data is ensured to be specially used for a user to always see the screen undisturbed, a peeping person always sees an interference image containing the interference white screen under the influence of the persistence of vision, and finally the peeping-preventing display effect is realized.
6. A system for implementing the persistence-of-vision interference hiding-based privacy display method as claimed in any one of claims 1 to 5, comprising a polarizer array, a display, polarization glasses, a synchronous modulation module and a wireless communication module, further comprising an interference image generation module, a screen image analysis extraction module and a polarization direction orthogonal synchronization module, wherein,
The interference image generation module is used for replacing a screen image to be displayed by using an interference white screen image or inserting an interference white screen frame in the middle of the screen image frame, covering a polarizer array in front of a screen, and randomly changing the polarization direction according to a frame refreshing rate so as to enable the polarization directions of the screen image and the interference white screen to be orthogonal in time;
the screen image analysis and extraction module is used for filtering the interference white screen through polarized glasses specially worn by a user through screen data and viewing a screen image;
The polarization direction orthogonal synchronization module is used for providing synchronous control for the glasses polarization and the polarizer array through a wireless communication means, and randomly adjusting the polarization directions of the polarized glasses and the interference white screen to enable the polarization directions to be orthogonal in real time.
7. A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the method of any of claims 1-5.
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