CN105447421A - Method for realizing private protection of information displayed on screen - Google Patents
Method for realizing private protection of information displayed on screen Download PDFInfo
- Publication number
- CN105447421A CN105447421A CN201610014785.7A CN201610014785A CN105447421A CN 105447421 A CN105447421 A CN 105447421A CN 201610014785 A CN201610014785 A CN 201610014785A CN 105447421 A CN105447421 A CN 105447421A
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- screen
- optical filter
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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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- 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
- G06F21/60—Protecting data
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Health & Medical Sciences (AREA)
- Bioethics (AREA)
- General Health & Medical Sciences (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to the field of screen privacy protection, in particular to a method for realizing private protection of information displayed on a screen based on display color channel separation. The method is implemented through a display control module and an optical filter device, wherein the display control module runs at a screen control equipment end, and is used for controlling image color channels, abnormally outputting one or more color channels of an image to be displayed and outputting the remaining color channels normally or in an equal-proportion reduced way; the optical filter device is used on a user side, and can be used for filtering light rays which are emitted by the abnormal output color channels and keep light rays which are emitted by the normal output color channels. The method for realizing primary protection of information displayed on the screen has the characteristics of no need of modifying display hardware, all perspective privacy protection, convenience in use, and convenience in switching between a normal mode and a privacy protection mode.
Description
Technical field
The present invention relates to screen privacy protection field, especially, relate to a kind of method realizing displaying information on screen secret protection based on display color channel separation.
Background technology
Along with socioeconomic high speed development, people obtain information by electronic equipment more and more, as computing machine, mobile phone, TV etc.The information of these electronic equipments is presented to user mainly through indicator screen; this generates the problem of screen message secret protection; namely people are when using the electronic equipment such as computing machine, mobile phone; do not wish that other people see by surrounding, particularly in public situation such as bus, subway station, automatic teller machine, Internet bars for the information about individual privacy that indicator screen shows.Its reason is that everyone has the psychological needs of secret protection on the one hand, is also secondly to prevent individual important information from revealing, causing damage.And in some country or secret department of enterprise, also there is the actual needs preventing important information from being revealed by display screen.
Mainstream scheme at present for display secret protection adopts display privacy securing film (patent No.: CN200810028717.1).Its major function is that the light by reducing oblique propagation to be the visible angle reducing display, make to be only (be generally about 30 °) in the scope of 90 ° of positive and negative certain angles just can see bright display in sight line relative to the angle of display, thus the content that could read on screen, because insufficient light indicator screen presents black under all the other angles.Although this method can play certain screen privacy protected effect, inferior position is comparatively outstanding.On the one hand, when other people and user's sight line are in same angle, other people still clearly can read the content on screen, and described other people and user's sight line in this situation of same angle at automatic teller machine, other people very easily occur from the occasion such as to pass by after one's death; On the other hand, user only can read the content shown by indicator screen in a narrow and small angle, makes it move and is extremely restricted; In addition, pad pasting needs to be fitted on screen, the phenomenon of misoperation damage screen when operating inconvenience and easily occur laminating; Moreover this pad pasting removes once laminating inconvenience, cannot switch easily between privacy display mode and normal mode.Comprehensive the above several obvious defects, cause the application of this screen protecting film to be subject to great limitation.
Why current indicator screen can demonstrate picture, is because its each pixel can demonstrate shades of colour.Although the physical mechanism of dissimilar display is different, but realize colored in be all as primary colours by R (red), G (green), B (indigo plant) three kinds of colors, be referred to as Color Channel, the light of three kinds of primary colours can be mixed to form shades of colour under different power.Display can control the power of each Color Channel, generally with 0 ~ 255 the power defining this Color Channel, be called gray-scale value, 0 is corresponding to color and black, and 255 to reaching maximum by color intensity.For a pixel, give the arbitrary value between often kind of Color Channel imparting 0 ~ 255, three kinds of primary colours superpositions of various ratio, can demonstrate various different color.
Namely the present invention synthesizes this point from indicator screen picture by three kinds of Color Channels, devises a kind of method realizing screen message secret protection.
Summary of the invention
Technical field describes paragraph.The object of the present invention is to provide a kind of method realizing displaying information on screen secret protection, it has without the need to changing display hardware, full visual angle secret protection, easy to use, the feature of being convenient to switch normal mode and privacy protection mode.
The method realizing screen message secret protection that the present invention proposes comprises following two steps:
By at indicator screen opertaing device, as the display control module that computing machine, mobile phone run, make the improper output of one or more Color Channels in each Color Channel of each pixel that screen shows, namely export not according to the initial value of the original image that will show at this this Color Channel of pixel, all the other normally export or reduce to export, then on screen, the improper output due to original picture part colours passage is become distortion, color entanglement by the picture of actual displayed, thus not easily identification, improper output Color Channel serves the effect of upset;
User is by can filtering improper output color light, and retain the normal optical filter device viewing indicator screen exporting color light, then because the light of improper output Color Channel is by filtering, therefore user is it is seen that the normal image exporting Color Channel superposition and formed.This image compares original image, lose part colours passage, be equivalent to improper output Color Channel for entirely black, the colouring information of reaction original image is lost, but because all the other Color Channel information are not lost, so can not key message be lost for most of image, only have one as under improper output Color Channel at totally three Color Channels especially, the identification of image and the acquisition of information are not affected.
Further, the described display control module operated on indicator screen opertaing device, can control the every piece image of the whole screen-refresh of display, before each refreshed image, each pixel of original image is processed, then controls the image after screen Graphics Processing.
Further, described improper output Color Channel to be exported not according to initial value, comprise output and the value that the value of normal color passage has nothing to do and relevant value.Exporting the value relevant with the value of normal color passage, refer to the distribution of the value of the normal color passage according to each pixel, determining the value that the improper Color Channel of each pixel exports, to realizing good upset recognition effect by certain programmed algorithm.As in the close pixel region of normal color passage color value, 0 random value and the process of 255 values are done to the value of improper output Color Channel, make the intra-zone of solid colour under originally normal color passage become color inconsistent, inhibition is played to this region of eye recognition.
Further, described to the normal reduction output exporting Color Channel, refer to and the former gray-scale value of the normal output channel of each pixel is multiplied by the scale factor that is less than 1, make the color of the normal channel of each pixel all dimmed, object is that the relative brightness making improper Color Channel increases, thus makes the effect of its interfering picture more obvious.
Further, after reduction output is carried out to normal output Color Channel, for the problem that the image overcoming the normal color passage that user is seen by optical filter is also dimmed, indicator screen total brightness can be increased, thus do not change relative brightness while lifting normal color channel luminance.
Further, described optical filter device, its core is can filtering improper output color light, and retains the normal optical filter exporting color light.It can be independent optical filter, also can be the glasses of eyeglass with optical filter, thus user watches screen message by wearing the glasses with this special lens.
Further, described optical filter device can filtering improper output color light, and retain the normal optical filter exporting color light, divide by functional type and comprise long wave optical filter, shortwave optical filter, notch filtering light sheet, bandpass filter.
The present invention's advantage is compared with prior art:
(1) without the need to increasing, change any hardware of electronic equipment or carrying out any process such as pad pasting to electronic equipment display, runs software program is only needed;
(2) indicator screen secret protection is not by the restriction at visual angle, and not by the optical filter of specific optical filtering performance, other people cannot obtain effective information from screen;
(3) user can see normal information by specific optical filtering performance optical filter viewing screen, and optical filter can be made into eyeglass, and user normally can watch screen message by wearing this special spectacles, also not by angle limitations, and Energy and comfort;
(4) when needs exit privacy protection mode, user only needs the display control module of closing this control image Color Channel that electronic equipment runs, convenient, flexible.
Accompanying drawing explanation
Fig. 1 is the displaying information on screen method for secret protection general flow chart that the present invention proposes.
Fig. 2 is embodiment of the present invention aid illustration figure.
Main element symbol description
Indicator screen 1
Host computer 2
Be about to the piece image 3 of display
The block 4 that image divides
Filter glass glasses 5
Embodiment
Below in conjunction with accompanying drawing and embodiment, displaying information on screen method for secret protection proposed by the invention is described in further detail.Provide hereinafter embodiments of the invention only for illustration of, but not be used for limiting the scope of the invention.
See also accompanying drawing 2, the embodiment of the present invention is with the LCD display curtain 1 of desktop computer for test screen, and using the redness in its RGB three Color Channel as improper output Color Channel, remaining is green and blue as normally exporting Color Channel.Operate in the API(application programming interface that the display control module in host computer 2 is provided by operating system), control screen refreshing content each time, read the whole screen-picture image that each width is about to refresh display, for image in Fig. 23, by image, the close block of multiple color is divided into according to the degree of closeness of these two kinds of colors green and blue to each pixel of the whole image of described image 3.To each block, for block in Fig. 24, be a whole screen of dividing elements with 10 pixel * 10 pixels, all be set to identical to all red channel gray-scale values belonging to the pixel of this block in each unit, and being set to one of 0 or 255 at random, same block is all independently in the pixel of different units, different blocks in the red channel gray value of the pixel of same unit in the pixel of different units, different blocks.For blue and green two normal color passages, the gray-scale value of these two passages of all pixels is all multiplied by 0.5.Indicator screen brightness is set to maximum.Image after routine processes is presented on screen.Use filtering 580nm ~ 700nm and by the notch filtering light sheet of all the other visible light wave ranges make glasses 5 give user use.Become cool tone to the color of image globality that user sees, but generally impact is not had to the identification of image and acquisition of information.
In addition, those skilled in the art also can do other changes in spirit of the present invention, and certainly, these changes done according to the present invention's spirit, all should be included within the present invention's scope required for protection.
Claims (7)
1. realize a method for displaying information on screen secret protection, it is characterized in that, it comprises:
The display control module that a Color Channel carrying out image that () is run at screen control device end controls; one or more among multiple Color Channels that described display control module controls to be about to display image carry out improper output, and all the other Color Channels normally export or reduce to export;
What b () used in user side can filtering improper output Color Channel emitted light, retains the normal optical filter device exporting Color Channel emitted light simultaneously.
2. realize the method for displaying information on screen secret protection as claimed in claim 1, it is characterized in that: described screen control device end is one or more in desktop computer, notebook computer, panel computer, smart mobile phone, intelligent television in step (a)..
3. realize the method for displaying information on screen secret protection as claimed in claim 1; it is characterized in that: described display control module in step (a).; before its control flow comprises each screen-refresh image of control; each pixel of the original image being about to display is processed, and controls the image after screen Graphics Processing.
4. realize the method for displaying information on screen secret protection as claimed in claim 1; it is characterized in that: in step (a). described display control module control to be about to display image multiple Color Channels among one or morely carry out improper output; comprise and exporting and the value that the value of normal color passage has nothing to do or relevant value; the value that described output is relevant with the value of normal color passage; for the distribution of the value of the normal color passage according to each pixel, determine by certain programmed algorithm the value that the improper Color Channel of each pixel exports.
5. realize the method for displaying information on screen secret protection as claimed in claim 1; it is characterized in that: described to the normal reduction output exporting Color Channel in step (a).; former gray-scale value for the normal output channel by each pixel is multiplied by the scale factor that is less than 1, or the former gray-scale value of the normal output channel of each pixel is multiplied by one and is less than the scale factor of 1 and indicator screen total brightness is increased.
6. realize the method for displaying information on screen secret protection as claimed in claim 1, it is characterized in that: optical filter device described in step (b) is independent optical filter, take optical filter as one or more in the glasses of eyeglass.
7. realize the method for displaying information on screen secret protection as claimed in claim 6, it is characterized in that: described optical filter is one or more in long wave optical filter, shortwave optical filter, notch filtering light sheet, bandpass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014785.7A CN105447421A (en) | 2016-01-11 | 2016-01-11 | Method for realizing private protection of information displayed on screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014785.7A CN105447421A (en) | 2016-01-11 | 2016-01-11 | Method for realizing private protection of information displayed on screen |
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| Publication Number | Publication Date |
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| CN105447421A true CN105447421A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610014785.7A Pending CN105447421A (en) | 2016-01-11 | 2016-01-11 | Method for realizing private protection of information displayed on screen |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105930736A (en) * | 2016-04-29 | 2016-09-07 | 宇龙计算机通信科技(深圳)有限公司 | Display method, display apparatus, display terminal and descrambling terminal |
| CN106557711A (en) * | 2016-11-04 | 2017-04-05 | 深圳大学 | The screen privacy guard method of mobile terminal device and system |
| WO2018072377A1 (en) * | 2016-10-20 | 2018-04-26 | 中兴通讯股份有限公司 | Optical signal output method and system, related device, and computer storage medium |
| CN112651056A (en) * | 2019-10-11 | 2021-04-13 | 中国信息通信研究院 | Anti-screenshot display method, device and system |
| CN116206558A (en) * | 2023-05-06 | 2023-06-02 | 惠科股份有限公司 | Display panel control method and display device |
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| CN101512625A (en) * | 2006-08-30 | 2009-08-19 | 日本电气株式会社 | Image processing apparatus, image processing method, program thereof, display device, and image display system |
| CN101568953A (en) * | 2006-12-26 | 2009-10-28 | 日本电气株式会社 | Display device and display method |
| CN103201787A (en) * | 2010-09-14 | 2013-07-10 | Nec显示器解决方案株式会社 | Information display device |
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2016
- 2016-01-11 CN CN201610014785.7A patent/CN105447421A/en active Pending
Patent Citations (3)
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| CN101512625A (en) * | 2006-08-30 | 2009-08-19 | 日本电气株式会社 | Image processing apparatus, image processing method, program thereof, display device, and image display system |
| CN101568953A (en) * | 2006-12-26 | 2009-10-28 | 日本电气株式会社 | Display device and display method |
| CN103201787A (en) * | 2010-09-14 | 2013-07-10 | Nec显示器解决方案株式会社 | Information display device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105930736A (en) * | 2016-04-29 | 2016-09-07 | 宇龙计算机通信科技(深圳)有限公司 | Display method, display apparatus, display terminal and descrambling terminal |
| WO2018072377A1 (en) * | 2016-10-20 | 2018-04-26 | 中兴通讯股份有限公司 | Optical signal output method and system, related device, and computer storage medium |
| CN107967884A (en) * | 2016-10-20 | 2018-04-27 | 中兴通讯股份有限公司 | A kind of optical signal output method, mobile terminal, wearable device and system |
| CN106557711A (en) * | 2016-11-04 | 2017-04-05 | 深圳大学 | The screen privacy guard method of mobile terminal device and system |
| CN112651056A (en) * | 2019-10-11 | 2021-04-13 | 中国信息通信研究院 | Anti-screenshot display method, device and system |
| CN112651056B (en) * | 2019-10-11 | 2024-05-31 | 中国信息通信研究院 | Anti-screenshot display method, device and system |
| CN116206558A (en) * | 2023-05-06 | 2023-06-02 | 惠科股份有限公司 | Display panel control method and display device |
| CN116206558B (en) * | 2023-05-06 | 2023-08-04 | 惠科股份有限公司 | Display panel control method and display device |
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Application publication date: 20160330 |
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