CN112687240A - Display information protection method, display and display equipment - Google Patents
Display information protection method, display and display equipment Download PDFInfo
- Publication number
- CN112687240A CN112687240A CN202011508883.9A CN202011508883A CN112687240A CN 112687240 A CN112687240 A CN 112687240A CN 202011508883 A CN202011508883 A CN 202011508883A CN 112687240 A CN112687240 A CN 112687240A
- Authority
- CN
- China
- Prior art keywords
- display
- frame image
- value
- primary color
- color
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a display information protection method, a display and display equipment. The method comprises the steps that after a display is powered on, an original frame image from information source equipment is obtained through an image data interface to be displayed, a display information protection mode is entered according to display protection requirements, the display mixes interference frame images with the original frame image needing display protection, white light display is presented in a display protection area of a display screen, and the original frame image can be watched by wearing watching glasses. The method, the display and the display equipment realize the hiding of the display information by generating the white light, mainly can be realized by scrambling the display image, and have the advantages of low realization cost, strong universality and good protection effect.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display information protection method, a display and display equipment.
Background
In the prior art, when the display is applied to some office places with specific requirements, a user wants important contents displayed on a display screen to be only watched and used by the user himself, so that an onlooker can be prevented from watching the displayed contents unintentionally or intentionally, and therefore the display with a display information protection function is desired to be provided, and the specific requirements of the user are met.
Disclosure of Invention
The invention mainly solves the technical problems that a display information protection method, a display and display equipment are provided, and the problems that the display and the display equipment do not have a display information protection function, and the technical difficulty and the realization cost for realizing the display protection effect are high in the prior art are solved.
In order to solve the technical problem, one technical solution adopted by the present invention is to provide a display information protection method applied to a display, the method including: the display is powered on, receives original frame images from information source equipment through an image data interface for displaying, enters a display information protection mode according to display protection requirements, mixes interference frame images with the original frame images which need to be displayed and protected, and displays white light in a display protection area of the display screen.
Preferably, the display protection area comprises a whole screen display area or a partial display area of the display screen.
Preferably, the display displays an original frame image and a corresponding interference frame image at intervals, and a sum of a bit color value of a single primary color included in display data in the interference frame image and a bit color value of a corresponding single primary color included in corresponding display data in the original frame image is equal to a bit color extreme value of the corresponding single primary color.
Preferably, the time length of the interval display of the original frame image and the corresponding interference frame image is less than the human eye vision dwell time length.
Preferably, the bit color values of the single primary colors include a bit color value of a red primary color, a bit color value of a green primary color, and a bit color value of a blue primary color, and the bit color extreme value of the single primary color includes a bit color extreme value of the red primary color, a bit color extreme value of the green primary color, and a bit color extreme value of the blue primary color.
Preferably, the bit color extreme value of the single primary color comprises a maximum value of the bit color values of the single primary color, or a maximum value of the bit color values of the single primary color minus a correction value.
Preferably, the method includes wearing viewing glasses, and the viewing glasses are synchronously opened with the original frame image display and synchronously closed with the interference frame image display.
The invention also provides a display with display information protection, comprising: one or more image data interfaces; one or more processors; one or more memories; and one or more programs, wherein the one or more programs are stored in the memory, which when executed by the processor, cause the display to perform the steps of: the display device comprises an image data interface, a display screen and a display information protection mode, wherein the image data interface is used for acquiring original frame images from information source equipment to display, the display screen enters the display information protection mode according to display protection requirements, the display device is used for mixing interference frame images with the original frame images which need to be displayed and protected, and white light display is displayed in a display protection area of the display screen.
Preferably, the display protection area comprises a whole screen display area or a partial display area of the display screen.
Preferably, the display displays an original frame image and a corresponding interference frame image at intervals, and a sum of a bit color value of a single primary color included in display data in the interference frame image and a bit color value of a corresponding single primary color included in corresponding display data in the original frame image is equal to a bit color extreme value of the corresponding single primary color.
Preferably, the time length of the interval display of the original frame image and the corresponding interference frame image is less than the human eye vision dwell time length.
Preferably, the bit color values of the single primary colors include a bit color value of a red primary color, a bit color value of a green primary color, and a bit color value of a blue primary color, and the bit color extreme value of the single primary color includes a bit color extreme value of the red primary color, a bit color extreme value of the green primary color, and a bit color extreme value of the blue primary color.
Preferably, the bit color extreme value of the single primary color comprises a maximum value of the bit color values of the single primary color, or a maximum value of the bit color values of the single primary color minus a correction value.
Preferably, the display device further comprises viewing glasses, wherein the viewing glasses are synchronously opened with the display of the original frame image and synchronously closed with the display of the interference frame image.
Preferably, the display comprises an LCD display, an LED display or an OLED display.
The invention also provides a display device with display information protection, which comprises a display information protection device, wherein the display information protection device is connected in series between the display device and the information source device through an image data interface, and the display information protection device comprises: one or more image data interfaces; one or more processors; one or more memories; and one or more programs, wherein the one or more programs are stored in the memory, and when executed by the processor, cause the display information guard to perform the steps of: the method comprises the steps that an original frame image from information source equipment is obtained through an image data interface to be displayed, a display information protection mode is entered according to display protection requirements, the display information protection device adds interference frame images to the original frame image needing display protection, and white light display is presented in a display protection area of display equipment.
The invention has the beneficial effects that: the invention discloses a display information protection method, a display with the display information protection function and display equipment. The method comprises the steps that after a display is powered on, an original frame image from information source equipment is obtained through an image data interface to be displayed, a display information protection mode is entered according to display protection requirements, the display mixes interference frame images with the original frame image needing display protection, white light display is presented in a display protection area of a display screen, and the original frame image can be watched by wearing watching glasses. The method, the display and the display equipment realize the hiding of the display information by generating the white light, mainly can be realized by scrambling the display image, and have the advantages of low realization cost, strong universality and good protection effect.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a display with display information protection according to the present invention;
FIG. 2 is a flow chart illustrating an embodiment of a method for securing information according to the present invention;
FIG. 3 is a diagram illustrating a timing diagram of light emission according to an embodiment of the information protection method of the present invention;
FIG. 4 is a schematic diagram of an embodiment of a method for protecting display information according to the present invention, wherein light emitted from a human eye is mixed into white light;
FIG. 5 is a schematic diagram of the operation of a display in an embodiment of the display with display information protection according to the present invention;
FIG. 6 is a schematic diagram illustrating an embodiment of a display with display information protection according to the present invention;
FIG. 7 is a schematic view of viewing glasses with display information protection according to an embodiment of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Preferably, the present invention provides a method for protecting display information, which is applied to a display, as shown in fig. 1, and includes a display 1 and an information source device 2, where the display includes a display connected to a computer, a display connected to a monitoring device, a display connected to a network router, and the like, and the display is connected to a plurality of information source devices. The method comprises the following steps: after the display 1 is powered on, the original frame image from the information source device 2 is received through the image data interface to be displayed, the display enters a display information protection mode according to the display protection requirement, the display 1 adds an interference frame image to the original frame image which needs to be displayed and protected, and white light display is displayed in a display protection area of the display screen.
Preferably, the image data interface includes a VGA interface, a DVI interface, and/or an HDMI interface.
Preferably, the display device may include a normal display mode for normally displaying the original frame image provided by the information source device, and a display information protection mode for protecting and displaying the original frame image after entering the normal display mode, in which case the display device displays white light, so that the original frame image cannot be directly seen by human eyes, thereby preventing the display information from being directly viewed or overlooked by unrelated people. Therefore, the protection information is externally displayed through white light, so that the protection information is in a state of being invisible to human eyes and is completely covered by the white light, rather than the state of being invisible after superposition interference in the prior art, and the protected information can be locally seen or seen unclear and discontinuously in the state, so that the protection information is more concealed and has a better protection effect from the aspect of protection effect.
Preferably, the display device further comprises a synchronization control interface, and a synchronization control signal generator, such as an infrared generator, is connected to the synchronization control interface, and the synchronization control signal generator generates a synchronization control signal, mainly used for the purpose that when the display device performs the protection display, corresponding viewing glasses are needed to be worn to see the displayed original frame image, otherwise, only the protection area of the display device can be seen to display the white light protection effect if the display device does not have the glasses. Preferably, the viewing glasses receive the synchronization control signal, and the viewing glasses are turned on synchronously with the display of the original frame image and turned off synchronously with the display of the interference frame image, as will be further described later. Preferably, the controller itself may issue a synchronization control signal to the viewing glasses.
Further, the principle of the method for protecting the display information by emitting white light by the display device of the present invention is described in detail below.
FIG. 2 is a flowchart illustrating a method for protecting display information according to an embodiment of the present invention. In fig. 2, the following steps are included:
step S1: at a first moment, a pixel luminous body in a display screen of the display emits first light, wherein the pixel luminous body comprises a plurality of single primary color light sources, and each single primary color light source emits light at the first moment and corresponds to a first moment bit value;
step S2: then at a second moment, the corresponding pixel luminous bodies in the display screen of the display emit second light rays, wherein each single primary color light source emits light at the second moment and corresponds to a second moment position color value;
the time interval between the first time and the second time is less than the human vision dwell time, and the sum of the first time bit color value and the second time bit color value of each single primary color light source is equal to the extreme value of the single primary color bit color;
step S3: the light emitted by the pixel luminous body at the first moment and the light emitted by the pixel luminous body at the second moment enter human eyes to be mixed, and then a white display effect is presented.
Preferably, the pixel light emitter refers to a light emitting unit corresponding to each pixel on a display screen of a display, the display screen of the display is usually formed by arranging and combining a plurality of pixel light emitters in a matrix manner, for example, the pixel light emitter corresponding to the display screen of the LED display is LED beads arranged on the screen in a matrix manner.
Preferably, the pixel luminous body includes a plurality of single primary color light sources, such as three common single primary color light sources of red, green and blue, the light emitted by the pixel luminous body is formed by combining single primary color light emitted by the plurality of single primary color light sources, that is, the color light emission of the pixel luminous body is realized by combining the light emission of the three single primary color light sources included in the pixel luminous body, the three single primary color light sources respectively refer to a red primary color light source, a green primary color light source and a blue primary color light source, each single primary color light source individually emits light of its own color, that is, the green primary color light source emits green light, the red primary color light source emits red light, and the blue primary color light source emits blue light, which are then mixed to form the color light emission of the pixel luminous. In order to make the color emission of the pixel illuminant have various different colors, the single primary color emitted by the single primary light source can be quantized and graded into a plurality of different levels of bit color values, and represented by data, for example, 6-bit color, that is, 6 powers of 2 equal to 64, to finely distinguish one single primary color, for example, for green, 64 distinguished green colors can be obtained by subdividing the single primary color, if represented by bit color values, each data in 0-63 represents a bit color value of a decimal representation different from green, or each data in binary representation 000000-.
When the pixel luminous body is required to present white light, the three single primary color light sources of the pixel luminous body are required to present respective single primary colors with maximum bit color values respectively, for example, 8-bit colors are used to represent the grading of each single primary color, then the maximum bit color value corresponding to the red primary color is 255, the maximum bit color value corresponding to the green primary color is 255, and the maximum bit color value corresponding to the blue primary color is 255. In the prior art, if the whole screen of the display displays white light, each pixel light emitter in the display screen needs to emit white light, that is, three single primary color light sources in each pixel light emitter respectively present respective single primary colors with maximum bit color values. Therefore, in order to emit white light for a long time, it is necessary that each pixel light emitter of the display screen of the display device continuously maintains this state for a long time to realize long-time white light emission.
In this embodiment, in order to realize that human eyes observe each pixel illuminant as white light, another implementation manner is adopted, namely, the pixel illuminant can emit light at a certain time interval by using the visual retention effect of human eyes, the light does not continuously keep the light emitting state all the time, and the light emitted from the pixel illuminant at the front and the back moments enters the human eyes to be mixed to present the white light, so that the human eyes can also feel that the white light is present. This is advantageous for saving power consumption, since the pixel luminary is not luminous in the light emission gaps at adjacent moments in time.
Further, in step S1, the pixel light emitter includes three single primary color light sources, i.e., a red primary color light source, a green primary color light source, and a blue primary color light source. The red primary color light source emits red light at a first moment and corresponds to a first-moment red bit value R1; the green primary color light source emits green light at a first time, and corresponds to a first time green bit color value G1; the primary blue light source emits blue light at a first instant in time, corresponding to a first instant in time blue value B1. Note that the light of the three primary color lights emitted from the three primary color light sources at the first time may be light of various colors after being combined.
Correspondingly, in step S2, the red primary color light source emits red light at the second time, and the red bit color value R2 at the second time corresponds to the red primary color light source; the green primary color light source emits green light at a second moment, and a second moment green bit color value G2 is corresponded; the primary blue light source emits blue light at a second instant in time, corresponding to a second instant in time blue value B2. Similarly, the light emitted at the second moment may be colored light.
Further, the sum of the first time bit color value and the second time bit color value of each single primary color light source is equal to the bit color extreme value of the single primary color. Preferably, the bit color extreme value of a single primary color is the maximum value of the bit color values of the single primary color, for example, 8 bit colors are used to represent the gradation of a single primary color, and then the maximum bit color value corresponding to the single primary color is 255. Wherein the maximum values of the bit-color values of the primary colors comprise a maximum value Rmax of the bit-color value of the red primary color, a maximum value Gmax of the bit-color value of the green primary color, and a maximum value Bmax of the bit-color value of the blue primary color.
The sum of the first temporal red bit value R1 and the second temporal red bit value R2 of the light source of the primary color of red is therefore equal to the maximum value Rmax of the bit value of this primary color of red, i.e.: r1+ R2 ═ Rmax; the sum of the first temporal green bit color value G1 and the second temporal green bit color value G2 for a light source having a green primary color is equal to the maximum value Gmax of the green primary color value, i.e.: g1+ G2 ═ Gmax; the sum of the first time-of-day blue color value B1 and the second time-of-day blue color value B2 of the light source with the primary color blue is equal to the maximum value Bmax of the primary color blue color value, i.e.: b1+ B2 ═ Bmax.
Due to the existence of the visual retention, when the light ray at the first moment is still retained in the human eyes, the light ray at the second moment also enters the human eyes, so that the light rays at the two moments before and after are mixed in the human eyes, and due to the existence of the specific bit color value relationship between the light rays emitted by the single primary color light source in the light rays at the two moments, the viewing effect of the human eyes is white light.
Preferably, the bit color extremum of the single primary color may also be a corrected value obtained by subtracting the bit color value of the single primary color from the maximum bit color value of the single primary color, that is, the sum of the bit color values of the single primary colors at two adjacent time instants is not necessarily equal to the maximum bit color value of the single primary color, but has an error range within which light rays at the previous time instant and the next time instant are mixed to achieve an approximately white light effect, that is, approximately white light. For example, the correction value Δ R of the bit color value of the red primary color, the correction value Δ G of the bit color value of the green primary color, and the correction value Δ B of the bit color value of the blue primary color. For example, when the maximum value of the bit color values of the primary colors is 255, Δ R, Δ G, Δ B are each less than or equal to 5.
Therefore, the sum of the first temporal red bit value R1 and the second temporal red bit value R2 of the light source of the primary color is equal to the maximum value Rmax of the bit value of the primary color minus the correction value Δ R of the bit value of the primary color, namely: r1+ R2 ═ Rmax- Δ R; the sum of the first temporal green bit value G1 and the second temporal green bit value G2 of the light source of the primary color of green is equal to the maximum value Gmax of the bit value of this primary color minus the correction value Δ G of the bit value of the primary color of green, i.e.: g1+ G2 ═ Gmax- Δ G; the sum of the first time-point blue color value B1 and the second time-point blue color value B2 of the light source with the primary color blue is equal to the maximum value Bmax of the primary color blue value minus a correction value Δ B of the primary color blue value, i.e.: b1+ B2 ═ Bmax- Δ B. In this case, the light entering the human eye at the two moments before and after the mixing is not a complete white light effect, but is close to white light, which is called approximate white light, and can also be used for hiding the displayed information.
Further, according to the principle of white light generation in the embodiment of fig. 2, as shown in fig. 3, there are two light-emitting time sequences, and in the first light-emitting time sequence TS1, at the first time t11, the light emission of the three primary color light sources of the pixel light emitter respectively corresponds to the bit color values: for example, the first temporal red color value of the red primary light source is R1, for example, R1 ═ 110, the first temporal green color value of the green primary light source is G1, for example, G1 ═ 50, and the first temporal blue color value of the blue primary light source is B1, for example, B1 ═ 220. The monochrome bitmap color values here are not limited to the maximum value of the corresponding monochrome bitmap color value, but can be arbitrarily selected between 0 and the maximum value of the monochrome bitmap color value, for example, between 0 and 255, and the bitmap color values of the three monochrome primaries are not required to be equal or have a specific numerical relationship, and the bitmap color values are selected independently of each other. Further, in the second light-emitting time sequence TS2, at the second time t21, the bit values corresponding to the three primary color light sources of the pixel light-emitting body respectively are: for example, the second temporal red color value of the red primary light source is R2, for example, R2 ═ 145, the second temporal green color value of the green primary light source is G2, for example, G2 ═ 205, the second temporal blue color value of the blue primary light source is B2, for example, B2 ═ 35, and R1+ R2 ═ maximum Rmax of the red primary color value, for example, R1+ R2 ═ 110+145 ═ 255, G1+ G2 ═ maximum Gmax of the green primary color value, for example, G1+ G2 ═ 50+205 ═ 255, B1+ B2 ═ maximum Bmax of the blue primary color value, for example, B1+ B2 ═ 220+35 ═ 255.
By the mode, as shown in fig. 4, light rays emitted from the front and the back of the pixel luminous body at two time adjacent in time can reach human eyes after being spatially transmitted, and based on the reason that the light rays stay in the vision of the human eyes, the light rays emitted from the front and the back of the pixel luminous body at the front and the back are mixed in the human eyes, although the light rays emitted from the front and the back are not white light, the bit color values corresponding to the front and the back of each single primary color in the two are added and then equal to the bit color extreme value of the corresponding single primary color, so that the observation effect that the light rays emitted from the front and the back of the pixel luminous body at the front and the back are mixed in the human eyes to present white light can be realized.
Preferably, the time interval between the first time and the second time is less than 0.1 second, because the human eye has a visual dwell time of about 0.1 second.
On the basis of the embodiment shown in fig. 3, continuing at the third time, the corresponding pixel light emitters of the display screen emit third light rays, wherein each single-primary-color light source emits light at the third time corresponding to a third time-position color value; at a fourth moment, the corresponding pixel luminous body of the display screen emits fourth light, wherein each single primary color light source emits light at the fourth moment and corresponds to a fourth moment color value; the time interval between the third time and the fourth time is less than the visual dwell time, and the sum of the third-time bit color value and the fourth-time bit color value of each single primary color light source in the pixel luminous body is equal to the bit color extreme value of the single primary color; a third light ray emitted by the pixel luminous body at a third moment and a fourth light ray emitted by the pixel luminous body at a fourth moment enter human eyes to be mixed, and then a white display effect is presented;
in contrast, as shown in fig. 3, in the first light-emitting time sequence TS1, at a third time t12, the pixel light emitter emits a third light, and the bit values corresponding to the three primary color light sources of the pixel light emitter respectively emit light are: the third time red color value of the red primary light source is R3, the third time green color value of the green primary light source is G3, and the third time blue color value of the blue primary light source is B3. In the second light-emitting time sequence TS2, at a fourth time t22, the pixel light-emitting body emits a fourth light, and the three primary color light sources of the pixel light-emitting body emit lights with corresponding bit color values: the fourth time red bit color value of the red primary light source is R4, the fourth time green bit color value of the green primary light source is G4, and the fourth time blue bit color value of the blue primary light source is B4. It is further satisfied that the sum of the third time-of-day bit color value and the fourth time-of-day bit color value of each individual primary light source equals the bit color extremum of the individual primary color, wherein R3+ R4 for the red primary light source equals Rmax, or R3+ R4 equals Rmax Δ R, the green primary light source equals G3+ G4 equals Gmax, or G3+ G4 equals Gmax Δ G, the blue primary light source equals B3+ B4 equals Bmax, or B3+ B4 equals Bmax Δ B.
And so on, the time intervals of the front and back adjacent moments in the two time sequences are both smaller than the visual dwell time, and the sum of the previous moment bit color value and the next moment bit color value of each single primary color light source in the same pixel luminous body is kept equal to the single primary color bit color extreme value, so that the light rays at the adjacent moments are mixed by human eyes to present a white display effect, and the white display effect is continuously kept.
By analogy, that is, as shown in fig. 3 and fig. 4, for example, after the light GX _ t11 generated by the light emission of the pixel illuminant at the first time t11 reaches the human eye, the light GX _ t21 generated by the light emission at the second time t21 also reaches the human eye, and after the two lights are mixed, the two lights appear as white lights for the human visual viewing effect, and the two lights alone are not limited to be white lights, but may be a plurality of different colored lights, but the colored lights at the two times should satisfy the foregoing bit value relationship. Further, the light GX _ t12 generated by the light emission at the third time t12 reaches the human eye, and the light GX _ t22 generated by the light emission at the fourth time t22 also reaches the human eye, and the two lights are mixed to appear as white light for the human visual observation effect.
Note that, here, there is no requirement for the visual effect of the two lights of the light GX _ t21 generated by the light emission at the second timing t21 and the light GX _ t12 generated by the light emission at the third timing t12 being mixed. In practical applications, the light mixture at these two moments may or may not be white light. As long as the time interval between adjacent moments is short and is less than the time length of the stay of human vision, for the first moment t11 and the light emitted at the second moment t21 to be mixed into white light, and for the third moment t12 and the light emitted at the fourth moment t22 to be mixed into white light, even if the light emitted at the second moment t21 and the light emitted at the third moment t12 are not mixed into white light, the effect of the overall light being approximate to white light is not affected, that is, although the light emitted at the second moment t21 and the light emitted at the third moment t12 are mixed into white light, the light is covered by the previous mixed white light and the subsequent mixed white light. Therefore, the light emitted at the second time t21 is determined by the light emitted at the first time t11, and the light emitted at the fourth time t22 is determined by the light emitted at the third time t12, so that it is not necessary to consider that the light emitted at the first time t11 and the light emitted at the third time t12 have correlation, that is, the light emitted at the first time t11 and the light emitted at the third time t12 can be independent and do not need to have a constraint relationship. Therefore, in the present invention, after the lights emitted from the previous pair of adjacent times are mixed into white light, the lights emitted from the next pair of adjacent times are mixed into white light, and if the time between the two pairs of adjacent times is short enough, for example, less than the visual dwell time, even if the mixed lights are not mixed into white light, the lights will be blocked by the white light generated from the previous and next pairs of adjacent times, and the overall visual impression is similar to the visual effect of white light.
Preferably, the display screen of the display includes a plurality of pixel illuminants, different pixel illuminants independently perform bit color value setting, but all the pixel illuminants meet the condition that the sum of the added bit color values of the single primary color light sources at adjacent moments is equal to the corresponding single primary color bit color extreme value, and the display moments are synchronized, so that the synchronous white display effect of the plurality of pixel illuminants is realized.
For example, the light emitting characteristics of the first pixel illuminant at the first time, the second time and the subsequent time only need to satisfy that the sum of the previous time bit color value and the subsequent time bit color value of each single primary color light source in the first pixel illuminant is equal to the single primary color bit color extreme value, and it can be ensured that the light emitted from the front and the rear adjacent times of the first pixel illuminant enters human eyes and is displayed as a white light effect. Here, for example, the bit color value of each of the primary color light sources at the first pixel emitters is not required at the same time, is equal to the bit color value of each of the primary color light sources at the second pixel emitters, or has a specific relationship, and therefore the pixel emitters are independent of each other with respect to color rendering. However, these pixel emitters need to be synchronized in time.
Preferably, the plurality of pixel light emitters includes all pixel light emitters of the display screen of the display or a plurality of pixel light emitters in a part of the display area of the display screen of the display. The white light display control is carried out on all the pixel luminous bodies of the display screen of the display, so that the whole screen can be displayed in a white light mode. By performing the white light display control on the plurality of pixel luminous bodies in the partial display area, white light display in the partial area of the screen can be realized.
The above description of the light emitting principle of the white light of the present invention shows that the white light of the present invention is combined into white light by using the light rays of the adjacent time before and after entering human eyes, and the light rays can be colored light rays when viewed alone, and the light rays of the next time can be correspondingly combined according to the light rays of the previous time due to the specific relationship between the light rays of the adjacent time before and after, so that the light rays of the next time of the present invention can be controlled to realize the mixing of the light rays of the previous time, and further the information displayed by the light rays of the previous time is concealed, which is an important innovation point of the present invention. Therefore, if only from a certain moment of viewing, the light displayed by the display screen is not white light, but can be various colored light, but from the way of continuously viewing from front to back, that is, from the whole, due to the mixed white light effect between the light at the front and back moments, the human eyes can see the white light effect when directly viewing.
Further, the following further describes the constituent implementation of the display of the present invention in detail. First, it should be noted that the bit color values corresponding to the emission of the monochromatic light sources of each pixel illuminant on the display are in one-to-one correspondence with the bit color values of each monochromatic color included in the display data of the displayed image frame, that is, the monochromatic light sources display the bit color values of the monochromatic colors according to the display data of the image frame to be displayed. In addition, when the display performs display, the display control of the pixel light emitter is performed based on the display data of the image frame by a continuous screen brushing method.
Normally, the display screen performs screen refreshing display on the pixel luminous bodies on the display screen at a certain frame frequency for the input original frame image, for example, if the refresh rate of the display screen is 60Hz, the refresh rate of the display screen is 60 times per second. If the original frame image is a static image, the original frame image is refreshed 60 times within one second, and in the 60 times of refreshing, the bit color value of the single primary color light source of the pixel luminous body at the corresponding position in the previous refreshing is identical to the bit color value of the single primary color light source of the pixel luminous body at the corresponding position in the next refreshing, and the bit color values are all the display data of the corresponding original frame image. According to the method, in the two adjacent refreshing processes, the bit color value of the single primary color light source of the pixel luminous body at the corresponding position in the previous refreshing process and the bit color value of the single primary color light source of the pixel luminous body at the next corresponding position meet the condition that the sum of the bit color value and the bit color value is equal to the maximum value of the bit color of the single primary color, so that the display effect of white light can be presented.
FIG. 5 is a schematic diagram of an embodiment of a display with display information protection according to the invention. The display comprises one or more image data interfaces; one or more processors; one or more memories; and one or more programs, wherein the one or more programs are stored in the memory, which when executed by the processor, cause the display to perform the steps of: the display is connected with information source equipment through an image data interface and acquires original frame images X1 and X2 … …, enters a display information protection mode according to display protection requirements, adds interference frame images Y1 and Y2 … … to the original frame images X1 and X2 … … which need to be displayed and protected, and displays white light in a display protection area of the display screen. Preferably, the processor and the memory herein include a split form and an integrated form, the split form refers to a processor and a memory chip which are independent and connected by a line, and the integrated form refers to a processor and a memory integrated in one chip or a programmable circuit (such as FPGA).
Further, after the program in the processor is executed, the input original frame images X1, X2 … … are subjected to frame adding processing to obtain interference frame images Y1, Y2 … …, the sum of the bit color value of each single primary color contained in the display data in the interference frame images Y1, Y2 … … and the bit color value of the corresponding single primary color contained in the corresponding display data in the original frame images X1, X2 … … is equal to the extreme value of the bit color of the single primary color, the display screen of the display continuously refreshes and displays the original frame images X1, X2 … … and the corresponding interference frame images Y1, Y2 … …, and the display screen of the display displays a white light effect, so that the original frame images X1, X2 … … are protected from information.
Here, it may correspond to fig. 3 and 4, each time in the first light-emitting time series TS1 in fig. 3 corresponds to a display time of the original frame images X1, X2 … …, each time in the first light-emitting time series TS2 corresponds to a display time of the interference frame images Y1, Y2 … …, and the original frame images X1, X2 … … and the corresponding interference frame images Y1, Y2 … … satisfy the requirements of the foregoing description in terms of the relationship of the time and the relationship of the bit color values of the light sources.
Preferably, the function of adding the interference frame image on the basis of the original frame image is realized inside the display, which can be realized by adding a hardware processing unit or module and a processing program therein, or by adding a processing program to the original hardware processing unit or module, that is, under the condition of keeping the hardware circuit inside the display unchanged, the processing function of realizing the display information protection is added to the image display processing function, and is still realized by hardware components such as a processor based on the display, and thus, the function of displaying the information protection is favorably added on the basis of not changing the hardware cost.
Preferably, an independent electronic device may be externally added to the existing ordinary display without the function of protecting the display information, as shown in fig. 6, an external display information protection device 3 is added on the basis of the embodiment shown in fig. 1, and is connected in series between the ordinary display device 1 and the information source device 2 through an image data interface. Preferably, the external display information protection device 3 mainly implements the function of adding the interference frame image on the basis of the original frame image, thereby completing the function of display information protection. Preferably, the external display information protection device 3 may also send a synchronization control signal to the viewing glasses, which is specifically referred to above. Therefore, the existing display equipment can be additionally installed and modified, and the display equipment has the function of information display protection.
Preferably, based on the same concept, the present invention further provides another display with display information protection, as shown in fig. 6, the display device 1 is preferably a display device such as a normal display, a projector, etc., and the projector, although projecting onto a curtain for displaying, can also display information protection for the light projected by the projector according to the method of the present invention by mixing the original frame image and the interference frame image into white light in space-time. The display information protection device comprises a display information protection device 3, wherein the display information protection device 3 is connected in series between the display equipment 1 and the information source equipment 2 through an image data interface, and the display information protection device 3 comprises: one or more image data interfaces; one or more processors; one or more memories; and one or more programs, wherein the one or more programs are stored in the memory, which when executed by the processor, cause the display information guard 3 to perform the steps of: the original frame image from the information source device 2 is acquired through the image data interface to be displayed, the display information protection mode is entered according to the display protection requirement, the display information protection device 3 adds an interference frame image to the original frame image which needs to be displayed and protected, and white light display is presented in the display protection area of the display device 1. Preferably, the processor and the memory herein include a split form and an integrated form, the split form refers to a processor and a memory chip which are independent and connected by a line, and the integrated form refers to a processor and a memory integrated in one chip or a programmable circuit (such as FPGA).
Preferably, the controller of the present invention performs display, for each frame image to be displayed, including original frame images X1 and X2 … … and corresponding interference frame images Y1 and Y2 … …, where each display data corresponds to one pixel illuminant of the display screen, that is, each display data corresponds to one pixel illuminant of the display screen, and the bit color values of the single primary colors of the display data correspond to the bit color values of the single primary colors of the converted pixel illuminants. In practical applications, the bit values of the single primary colors of the display data in the image may be used as the bit values of the single primary colors of the single primary color light sources of the pixel light emitters, thereby controlling the color light emission of the single primary color light sources of the pixel light emitters.
Therefore, the luminous control of the corresponding pixel luminous body of the display screen can be realized by processing the display data controlled by the original frame image, the data processing of the image belongs to the processing of an application layer, the processing mode is easy to realize and operate, the processing mode is mainly realized by software processing, the structure of the pixel luminous body, the change of a hardware circuit, an electrical physical layer or a signal layer and the like of the display screen is not needed at all, the realization difficulty is greatly reduced, the research and development expenditure is saved, the production cost is reduced, and the popularization and the application are facilitated.
Preferably, the primary colors included in the display data in the original frame image X1 and the interference frame image Y1 have a red primary color, a green primary color, and a blue primary color, and thus the bit value corresponding to the primary colors includes a bit value of the red primary color, a bit value of the green primary color, and a bit value of the blue primary color.
Preferably, the display data in the original frame image X1 is represented in a matrix form:
wherein M represents M rows, N represents N columns, and X(i,j)Represents one display data in the original frame image X1, where M ≧ i ≧ 1, N ≧ j ≧ 1, each of the display data is a bit color value including a red primary color, a green primary color, and a blue primary color, expressed as:
X(i,j)＝{RX(i,j),GX(i,j),BX(i,j)}
wherein R isX(i,j)Is the bit color value of the primary color red, GX(i,j)Is the bit color value of the primary color green, BX(i,j)Is the bit color value of the primary color green.
Further, the display data in the image Y1 is also represented in a matrix form for the interference frame:
wherein M represents M rows and N represents N columns，Y(i,j)And representing one display data in the interference frame image Y1, wherein M is more than or equal to i and more than or equal to 1, N is more than or equal to j and more than or equal to 1, each display data comprises a bit color value of a red primary color, a bit color value of a green primary color and a bit color value of a blue primary color, and is represented as:
Y(i,j)＝{RY(i,j),GY(i,j),BY(i,j)}
wherein R isY(i,j)Is the bit color value of the primary color red, GY(i,j)Is the bit color value of the primary color green, BY(i,j)Is the bit color value of the primary color green.
Preferably, in order to realize that the original frame image X1 and the interference frame image Y1 can be displayed in a mixed manner as white light after being displayed, the bit color values of the single primary colors in the display data corresponding to the original frame image X1 and the interference frame image Y1 are required to satisfy:
RX(i,j)+RY(i,j)＝Rmax，GX(i,j)+GY(i,j)＝Gmax，BX(i,j)+BY(i,j)＝Bmax
wherein R ismaxIs the maximum value of the bit-color value of the primary color red, GmaxIs the maximum value of the color values of the primary colors green and red, BmaxIs the maximum value of the color value of the blue primary color locus.
Further preferably, in order to realize that the original frame image X1 and the interference frame image Y1 can be displayed in a mixed manner to approximate white light after being displayed, the bit color values of the single primary colors in the display data corresponding to the original frame image X1 and the interference frame image Y1 are required to satisfy:
RX(i,j)+RY(i,j)＝Rmax-ΔR，GX(i,j)+GY(i,j)＝Gmax-ΔG，BX(i,j)+BY(i,j)＝Bmax-ΔB
wherein R ismaxIs the maximum value of the bit-color value of the primary color red, GmaxIs the maximum value of the bit-color value of the primary color green, BmaxIs the maximum value of the bit color value of the primary color blue; Δ R is a correction value of the bit value of the primary color red, Δ G is a correction value of the bit value of the primary color red, and Δ B is a correction value of the bit value of the primary color red.
Based on the above description, the interference frame mapThe image Y1 can be generated based on the known original frame image X1, and the bit color value of the corresponding single primary color is subtracted from the extreme value of the corresponding single primary color for the bit color of the corresponding single primary color on the original frame image X1, so that the difference is the bit color value of the corresponding single primary color, such as R, for each display data of the corresponding interference frame image Y1max-RX(i,j)＝RY(i,j). Therefore, the interference frame image Y1 can be obtained from the original frame image X1 by calculation, and the calculation method is only subtraction, and the processing speed is fast and the consumption of hardware resources is low.
Preferably, when the bit color extremum of the single primary color is the following with correction values:
RX(i,j)+RY(i,j)＝Rmax-ΔR，GX(i,j)+GY(i,j)＝Gmax-ΔG，BX(i,j)+BY(i,j)＝Bmax-ΔB
if the bit-color value of the corresponding monochrome color of the interference frame image Y1 is determined by subtracting the bit-color value of the monochrome color of the original frame image X1 from the bit-color extreme value of the monochrome color with the correction value, it is possible that the bit-color value of the monochrome color may be larger than the bit-color extreme value of the monochrome color, for example, RX(i,j)>(RmaxOr Δ R), in which case it can be directly determined that the bit value of the corresponding primary color of the interference frame image Y1 is equal to a correction value of the bit value of the primary color, for example equal to Δ R. Only the original frame image X1 and the interference frame image Y1 are illustrated here, and the original frame image X2 and the interference frame image Y2 in fig. 5, and the other original frame images and the corresponding interference frame images have the same characteristics, and are not described here again.
Further preferably, in practical applications, it is not necessary that each original frame image should generate an interference frame image, and particularly, when the original frame images occur at a higher frame frequency, a time interval between adjacent original frame images is less than a visual dwell time, so as to satisfy that the time interval between an original frame image added with an interference frame image before and an original frame image added with an interference frame image after the original frame image added with an interference frame image is less than the visual dwell time, without limiting that the two original frame images must be two adjacent original frame images. For example, with respect to fig. 6, if there is one original frame image X3 after the original frame image X2, if the time interval between the original frame image X1 and the original frame image X3 is smaller than the visual dwell time, it is only necessary that the original frame image X1 and the original frame image X3 are added to the interference frame image Y1 and the interference frame image Y3, respectively, without adding the interference frame image Y2 to the original frame image X2, so that the original frame image X1 and the original frame image X3 are not required to be two adjacent original frame images.
Based on the foregoing description, it is preferable that, in practical applications, the display protection area of the display includes a whole screen display area or a partial display area of the display screen. The local display area is realized by the effect of mixing the light of the pixel luminous body of the local display area into white light at the front and back adjacent moments through the original frame image of the local area and the interference image frame of the corresponding local area, and the principle is the same as that of the local display area, and the difference is only in local realization, which is not described herein again.
Preferably, the display displays an original frame image and a corresponding interference frame image at intervals, and a sum of a bit color value of a single primary color included in display data in the interference frame image and a bit color value of a corresponding single primary color included in corresponding display data in the original frame image is equal to a bit color extreme value of the corresponding single primary color. The meaning of the relevant bit color extreme value is as described above and comprises the maximum value of the bit color values of the single primary color or the maximum value of the bit color values of the single primary color minus a correction value.
Preferably, the time length of the interval display of the original frame image and the corresponding interference frame image is less than the human eye vision dwell time length.
Preferably, the bit color values of the single primary colors include a bit color value of a red primary color, a bit color value of a green primary color, and a bit color value of a blue primary color, and the bit color extreme value of the single primary color includes a bit color extreme value of the red primary color, a bit color extreme value of the green primary color, and a bit color extreme value of the blue primary color.
Preferably, the method includes wearing viewing glasses, and the viewing glasses are synchronously opened with the original frame image display and synchronously closed with the interference frame image display. Therefore, the original frame image can be screened and watched by wearing the watching glasses, and the interference frame image is filtered, so that the user can watch the original frame image hidden under white light.
Preferably, as shown in fig. 7, the glasses for watching are provided with a temperature sensor for sensing a body temperature, and when the temperature sensor does not sense the body temperature close to the human body, the lenses of the glasses for watching are controlled to be always in a closed state, so that shooting by using the glasses for watching can be avoided, for example, the glasses for watching are placed in front of the camera lens for shooting. Further, the temperature sensor is arranged at the inner side position GY1 of the nose pad of the observation glasses and is used for sensing the temperature of the human body near the nose; and the temperature sensor is arranged at the inner side position GY2 of the rear end of the clamping legs of the watching glasses and is used for sensing the temperature of the human body near the ears. Furthermore, the lenses of the watching glasses are controlled to be in a normal working state only after the watching glasses sense the effective human body temperatures collected by the temperature sensors at two different positions, otherwise, the lenses of the watching glasses are controlled to be in a closed state all the time.
Furthermore, the watching glasses and the display are interconnected through wireless communication, the watching glasses receive wireless communication signals from the display, and the opening action of the lenses of the watching glasses is synchronously controlled to be matched with the original frame image display, including opening time synchronization, frequency adaptation and the like. Preferably, the wireless communication signal is a direct sequence spread spectrum signal or a frequency hopping signal which is encrypted and/or has anti-interference capability, so that the wireless communication signal can effectively and reliably carry out synchronous control on the viewing glasses, and the viewing glasses are prevented from being interfered and working failure is avoided.
Therefore, the display screen of the display alternately and respectively displays the original frame image and the corresponding interference image frame in time, when the original frame image is displayed, the two lenses of the watching glasses are synchronously opened, and when the interference image frame is displayed, the two lenses of the watching glasses are synchronously closed, so that only the display content of the original frame image can be seen through the watching glasses.
Based on the same concept, the invention also provides a display with display information protection, and related contents are as described above and are not repeated herein.
Preferably, when the display displays at a fixed refresh rate, after each frame of the original frame image is refreshed, the interference frame image corresponding to the original frame image is refreshed correspondingly. Therefore, the display performs refresh display on the original frame image and the interference frame image in combination, and when the original frame image is updated slowly, such as a static image, the original frame image and the corresponding interference frame image are refreshed repeatedly. For a dynamic video, since the original frame image itself is played at a certain frame rate, after the corresponding interference frame image is inserted, when the display is subjected to screen refreshing, each original frame image and the corresponding interference frame image are only refreshed once. The frame rate of the original frame images, e.g. video frames, is 30FPS and the refresh rate of the display is 60 times/second, normally twice per original frame image. Preferably, after the interference frame image is added, each original frame image and the corresponding interference frame image are respectively refreshed only once. Preferably, if the refresh rate of the original frame image is maintained while the interference frame image is increased, the refresh rate of the display screen needs to be further increased to 2 times of the original refresh rate, for example, the refresh rate of the display screen is increased to 120 times/second, the refresh rate of the original frame image is still 60 times/second, and the refresh rate of the interference frame image is also 60 times/second.
Preferably, the display comprises an LCD display, an LED display or an OLED display.
Furthermore, the display screen of the display is an LED display screen, the pixel luminous bodies are LED lamp beads, and the three primary color light sources correspond to three luminous lamp wicks in the LED lamp beads. Therefore, the control of the monochromatic light source of the pixel luminous body is to control three luminous lampwicks of the LED lamp bead. Further, the display screen of the display is an LCD display screen, the pixel light-emitting body is a single pixel on the LCD display screen, the three primary color light sources correspond to three sub-pixels in the single pixel on the LCD display screen, and each sub-pixel corresponds to a Thin Film Transistor (TFT). The voltage of the sub-pixel is adjusted by the thin film transistor, and the voltage is related to the bit color value, and the voltage can be adjusted by setting different bit color values, so that the single-color light-emitting state of the sub-pixel is controlled.
Therefore, the invention discloses a display information protection method, a display with the display information protection function and display equipment. The method comprises the steps that after a display is powered on, an original frame image from information source equipment is obtained through an image data interface to be displayed, a display information protection mode is entered according to display protection requirements, the display mixes interference frame images with the original frame image needing display protection, white light display is presented in a display protection area of a display screen, and the original frame image can be watched by wearing watching glasses. The method, the display and the display equipment realize the hiding of the display information by generating the white light, mainly can be realized by scrambling the display image, and have the advantages of low realization cost, strong universality and good protection effect.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (16)
1. A display information protection method is applied to a display, and is characterized by comprising the following steps: the display is powered on, receives original frame images from information source equipment through an image data interface for displaying, enters a display information protection mode according to display protection requirements, adds interference frame images to the original frame images needing to be displayed and protected, and displays white light in a display protection area of the display screen.
2. The method of claim 1, wherein the display protection area comprises a full screen display area or a partial display area of a display.
3. The method according to claim 1, wherein the display device displays an original frame image and a corresponding interference frame image at intervals, and the sum of the bit color values of the single primary colors included in the display data in the interference frame image and the bit color values of the corresponding single primary colors included in the corresponding display data in the original frame image is equal to the bit color extreme value of the corresponding single primary colors.
4. The method of claim 3, wherein the interval between the original frame image and the corresponding interference frame image is less than the human eye vision dwell time.
5. The method for protecting display information according to claim 3, wherein the bitmap value of the primary color comprises a bitmap value of a red primary color, a bitmap value of a green primary color, and a bitmap value of a blue primary color, and the bitmap extreme value of the primary color of the primary.
6. The method of claim 3, wherein the extreme value of the bit color of the single primary color comprises a maximum value of the bit color value of the single primary color or a maximum value of the bit color value of the single primary color minus a correction value.
7. The method according to any one of claims 1 to 6, comprising wearing viewing glasses that are turned on in synchronization with the original frame image display and turned off in synchronization with the interference frame image display.
8. A display with display information protection, comprising: one or more image data interfaces; one or more processors; one or more memories; and one or more programs, wherein the one or more programs are stored in the memory, which when executed by the processor, cause the display to perform the steps of: the display device comprises an image data interface, an information source device, a display screen and a display information protection mode, wherein the image data interface is used for acquiring an original frame image from the information source device to display, the display device enters the display information protection mode according to display protection requirements, the display device is used for adding an interference frame image to the original frame image which needs to be displayed and protected, and white light display is displayed in a display protection area of the display screen.
9. The display with display information protection of claim 8, wherein the display protection area comprises a full screen display area or a partial display area of a display screen.
10. The display with display information protection according to claim 8, wherein the display displays an original frame image and a corresponding interference frame image at intervals, and a sum of a bit color value of a single primary color included in the display data in the interference frame image and a bit color value of a corresponding single primary color included in the corresponding display data in the original frame image is equal to a bit color extreme value of the corresponding single primary color.
11. The display with display information protection of claim 10, wherein the interval display time of the original frame image and the corresponding interference frame image is less than the human eye vision dwell time.
12. The display with display information protection of claim 10, wherein the primary color bitwise values comprise a red primary color bitwise value, a green primary color bitwise value and a blue primary color bitwise value, and the primary color bitwise extremum comprises a red primary color bitwise extremum, a green primary color bitwise extremum and a blue primary color bitwise extremum.
13. The display with display information protection of claim 12, wherein the extreme bit color value of the single primary color comprises a maximum value of the bit color value of the single primary color or a maximum value of the bit color value of the single primary color minus a correction value.
14. The display with display information protection according to any one of claims 8 to 13, further comprising viewing glasses that are turned on in synchronization with the original frame image display and turned off in synchronization with the interference frame image display.
15. The display with display information protection of claim 14, wherein the display comprises an LCD display, an LED display, or an OLED display.
16. A display device with display information protection, characterized by, include a display information protector, the said display information protector connects in series between display device and information source equipment through the image data interface, the said display information protector includes: one or more image data interfaces; one or more processors; one or more memories; and one or more programs, wherein the one or more programs are stored in the memory, and when executed by the processor, cause the display information guard to perform the steps of: the method comprises the steps that an original frame image from information source equipment is obtained through an image data interface to be displayed, a display information protection mode is entered according to display protection requirements, the display information protection device adds interference frame images to the original frame image needing display protection, and white light display is presented in a display protection area of display equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508883.9A CN112687240A (en) | 2020-12-18 | 2020-12-18 | Display information protection method, display and display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508883.9A CN112687240A (en) | 2020-12-18 | 2020-12-18 | Display information protection method, display and display equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112687240A true CN112687240A (en) | 2021-04-20 |
Family
ID=75450066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011508883.9A Pending CN112687240A (en) | 2020-12-18 | 2020-12-18 | Display information protection method, display and display equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112687240A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113268786A (en) * | 2021-07-19 | 2021-08-17 | 军事科学院系统工程研究院网络信息研究所 | Peep-proof display method based on visual persistence time domain chopping |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635017A (en) * | 2008-07-23 | 2010-01-27 | 佛山市顺德区顺达电脑厂有限公司 | Electronic device and method for preventing display picture data from being intercepted |
| CN101765877A (en) * | 2007-06-13 | 2010-06-30 | 日本电气株式会社 | Image display device, image display method and image display program |
| CN101841684A (en) * | 2009-12-18 | 2010-09-22 | 闪联信息技术工程中心有限公司 | System and method for encrypting display content and device for watching display content |
| US20130103943A1 (en) * | 2011-10-21 | 2013-04-25 | Alexander Samson Hirsch | Displaying private information using alternate frame sequencing |
| CN104166251A (en) * | 2014-06-19 | 2014-11-26 | 京东方科技集团股份有限公司 | Illuminating system, illuminating device and receiving device |
| US20160048055A1 (en) * | 2013-04-22 | 2016-02-18 | Boe Technology Group Co., Ltd. | Liquid crystal display, special eyeglasses and display apparatus |
| CN105657409A (en) * | 2016-01-27 | 2016-06-08 | 京东方科技集团股份有限公司 | Display screen, glasses, display system and play method |
| CN106129094A (en) * | 2016-07-29 | 2016-11-16 | 京东方科技集团股份有限公司 | A kind of display floater, its driving method and anti-peeping system |
| US20170118374A1 (en) * | 2015-10-26 | 2017-04-27 | Ricoh Company, Ltd. | Information processing system, terminal device and method of processing data |
| CN107092842A (en) * | 2017-04-14 | 2017-08-25 | 苏州三星电子电脑有限公司 | Secrecy display method and private display device |
| US20170323596A1 (en) * | 2016-05-06 | 2017-11-09 | Vivint, Inc. | White or off-white hidden display apparatus, system, and method |
| CN107644897A (en) * | 2017-10-24 | 2018-01-30 | 京东方科技集团股份有限公司 | A kind of display device and its control method |
| CN107680543A (en) * | 2017-09-05 | 2018-02-09 | 中国科学院信息工程研究所 | Anti-peeping safety display method, there is the safety display method and secure display system for taking advantage of pseudo- effect |
| CN110955055A (en) * | 2019-12-30 | 2020-04-03 | 深圳光子晶体科技有限公司 | Privacy display system based on polarization glasses |
| CN211375224U (en) * | 2020-03-02 | 2020-08-28 | 深圳市八坤科技有限公司 | Myopia prevention glasses and mobile terminal |
| CN112599079A (en) * | 2020-12-17 | 2021-04-02 | 郑州胜龙信息技术股份有限公司 | Display information protection method and LED display system |
-
2020
- 2020-12-18 CN CN202011508883.9A patent/CN112687240A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765877A (en) * | 2007-06-13 | 2010-06-30 | 日本电气株式会社 | Image display device, image display method and image display program |
| CN101635017A (en) * | 2008-07-23 | 2010-01-27 | 佛山市顺德区顺达电脑厂有限公司 | Electronic device and method for preventing display picture data from being intercepted |
| CN101841684A (en) * | 2009-12-18 | 2010-09-22 | 闪联信息技术工程中心有限公司 | System and method for encrypting display content and device for watching display content |
| US20130103943A1 (en) * | 2011-10-21 | 2013-04-25 | Alexander Samson Hirsch | Displaying private information using alternate frame sequencing |
| US20160048055A1 (en) * | 2013-04-22 | 2016-02-18 | Boe Technology Group Co., Ltd. | Liquid crystal display, special eyeglasses and display apparatus |
| CN104166251A (en) * | 2014-06-19 | 2014-11-26 | 京东方科技集团股份有限公司 | Illuminating system, illuminating device and receiving device |
| US20170118374A1 (en) * | 2015-10-26 | 2017-04-27 | Ricoh Company, Ltd. | Information processing system, terminal device and method of processing data |
| CN105657409A (en) * | 2016-01-27 | 2016-06-08 | 京东方科技集团股份有限公司 | Display screen, glasses, display system and play method |
| US20170323596A1 (en) * | 2016-05-06 | 2017-11-09 | Vivint, Inc. | White or off-white hidden display apparatus, system, and method |
| CN106129094A (en) * | 2016-07-29 | 2016-11-16 | 京东方科技集团股份有限公司 | A kind of display floater, its driving method and anti-peeping system |
| CN107092842A (en) * | 2017-04-14 | 2017-08-25 | 苏州三星电子电脑有限公司 | Secrecy display method and private display device |
| CN107680543A (en) * | 2017-09-05 | 2018-02-09 | 中国科学院信息工程研究所 | Anti-peeping safety display method, there is the safety display method and secure display system for taking advantage of pseudo- effect |
| CN107644897A (en) * | 2017-10-24 | 2018-01-30 | 京东方科技集团股份有限公司 | A kind of display device and its control method |
| CN110955055A (en) * | 2019-12-30 | 2020-04-03 | 深圳光子晶体科技有限公司 | Privacy display system based on polarization glasses |
| CN211375224U (en) * | 2020-03-02 | 2020-08-28 | 深圳市八坤科技有限公司 | Myopia prevention glasses and mobile terminal |
| CN112599079A (en) * | 2020-12-17 | 2021-04-02 | 郑州胜龙信息技术股份有限公司 | Display information protection method and LED display system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113268786A (en) * | 2021-07-19 | 2021-08-17 | 军事科学院系统工程研究院网络信息研究所 | Peep-proof display method based on visual persistence time domain chopping |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105702202B (en) | Display panel and its control method, display device, display system | |
| CN101866624B (en) | Image display device | |
| ES2379095T3 (en) | Control a screen comprising an RGBW color space | |
| US8558781B2 (en) | Color sequential display where each sub-frame is illuminated by a secondary color backlight followed by illumination with the complementary primary color backlight | |
| US8456413B2 (en) | Display device, drive method therefor, and electronic apparatus | |
| JP3450842B2 (en) | Color liquid crystal display | |
| EP3014603B1 (en) | Field-sequential color display device | |
| US6970148B2 (en) | Image display method | |
| US8797389B2 (en) | Image processing apparatus, method and program, and display apparatus | |
| US8184087B2 (en) | Display method for LCD device with reduced color break-up | |
| US20090102864A1 (en) | Driving method for color sequential display | |
| CN101582249B (en) | Field sequential color display and color sequence control method thereof | |
| CN105679803B (en) | Display panel and its control method, display device, display system | |
| US8395703B2 (en) | Display controller and display apparatus | |
| WO2008015905A1 (en) | Image processing apparatus, display apparatus, and image displaying system | |
| TW201117166A (en) | Image display apparatus and method | |
| TW201702698A (en) | Peep-proof display system and display method thereof | |
| US20120293572A1 (en) | Display device | |
| CN112687240A (en) | Display information protection method, display and display equipment | |
| CN112599079A (en) | Display information protection method and LED display system | |
| CN113438458A (en) | Method for optimizing initial brightness of time sequence color mixing liquid crystal projection | |
| US20070024642A1 (en) | Multi-plane display for displaying overlapping images | |
| US10748493B2 (en) | Display device for driving and compensating low latency virtual reality | |
| CN112599068A (en) | White display control method of color display screen | |
| JP6122289B2 (en) | Projector, projector control method and program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210420 |