CN113849148B - Picture display method and device, display equipment and computer readable storage medium - Google Patents
Picture display method and device, display equipment and computer readable storage medium Download PDFInfo
- Publication number
- CN113849148B CN113849148B CN202111204442.4A CN202111204442A CN113849148B CN 113849148 B CN113849148 B CN 113849148B CN 202111204442 A CN202111204442 A CN 202111204442A CN 113849148 B CN113849148 B CN 113849148B
- Authority
- CN
- China
- Prior art keywords
- display
- display screen
- picture
- memory
- screen
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1407—General aspects irrespective of display type, e.g. determination of decimal point position, display with fixed or driving decimal point, suppression of non-significant zeros
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a picture display method, a picture display device, display equipment and a computer readable storage medium. Wherein, the method comprises the following steps: acquiring a scene image within a preset range of a display screen, wherein a first display picture is displayed on the display screen; identifying the acquired scene image, and determining whether a candid camera or candid camera behavior exists in a preset range of the display screen; and under the condition that the display screen is determined to have the candid shooting equipment or the candid shooting behavior within the preset range, controlling the display screen to switch the first display picture into a second display picture which is cached in the memory in advance. The invention solves the technical problem of longer picture switching time when the current picture of the display is switched in the related technology.
Description
Technical Field
The present invention relates to the field of computers, and in particular, to a method and an apparatus for displaying a screen, a display device, and a computer-readable storage medium.
Background
With the enhancement of computer functions and the popularization of computer applications, many transactions need to be processed by computers at present, and data displayed on a computer display screen can be stolen by taking pictures and the like, so that data leakage is caused. In order to prevent the computer display screen from being candid, the related technology provides an anti-photographing display system and an anti-photographing method based on computer vision, and the anti-photographing display system comprises a display, an image collector, a memory and a processor, wherein the display, the image collector, the memory and the processor are used for identifying image information collected by the image collector and comparing the image information with preset characteristic information in the memory so as to judge whether candid equipment or candid behavior exists. The invention adopts the measure of closing the display of the display to prevent the candid shooting when judging that the candid shooting equipment or the candid shooting action exists. The method does not disclose a specific operation of turning off the display, and the related art generally adopts a scheme of turning off the power of the display and switching the display source by using a switcher for processing, but when the display screen is switched by adopting the scheme, the problem of long screen switching time exists.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a picture display method, a picture display device, display equipment and a computer readable storage medium, which are used for at least solving the technical problem of longer picture switching time when the current display picture of a display is closed in the related art.
According to an aspect of the embodiments of the present invention, there is also provided a screen display method, including: acquiring a scene image of a display screen within a preset range, wherein a first display picture is displayed on the display screen; identifying the acquired scene image, and determining whether a candid camera or candid camera behavior exists in a preset range of the display screen; and under the condition that the display screen is determined to have the candid shooting equipment or the candid shooting behavior in the preset range, controlling the display screen to switch the first display picture into a second display picture which is cached in a memory in advance.
Optionally, the controlling the display screen to switch the first display image to a second display image pre-cached in a memory includes: the method comprises the steps that a first storage device for caching a first display picture to be displayed on a display screen is arranged in the storage device, a second display picture is further stored in the first storage device, the first display picture is obtained by acquiring an external video signal in real time through an image acquisition device, and the second display picture in the first storage device is transmitted to the display screen through a data transmission interface to be displayed under the condition that a candid shooting device or a candid shooting behavior exists in a preset range where the display screen is located.
Optionally, the controlling the display screen to switch the first display image to a second display image pre-cached in a memory includes: and under the condition that the memory is a second memory of a display control module for controlling the display of the display screen, a screen menu type OSD superimposer is adopted to superimpose and display the second display picture pre-cached in the second memory on the first display picture in an opaque mode.
Optionally, the second display picture is obtained by adjusting the display proportion of the first display picture and the second display picture and is displayed on the first display picture in an opaque manner in an overlapping manner.
Optionally, the second display screen is a screen including warning information.
According to another aspect of the embodiments of the present invention, there is also provided a screen display apparatus including: the system comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring a scene image of a display screen within a preset range, and a first display picture is displayed on the display screen; the processing module is used for identifying the acquired scene image and determining whether a candid camera or candid camera behavior exists in a preset range of the display screen; and the control module is used for controlling the display screen to switch the first display picture into a second display picture which is cached in a memory in advance under the condition that the display screen is determined to have the candid shooting equipment or the candid shooting behavior in the preset range.
Optionally, the control module comprises: the first control unit is used for transmitting a second display picture in the first storage to the display screen through a data transmission interface to display under the condition that the first storage is used for caching the first display picture to be displayed on the display screen, the first storage is also used for storing a second display picture, the first display picture is obtained by acquiring an external video signal in real time through image acquisition equipment, and the condition that candid equipment or candid behavior exists in a preset range where the display screen is located is determined.
Optionally, the control module comprises: and the second control unit is used for superposing and displaying the second display picture pre-cached in the second memory on the first display picture in an opaque mode by adopting an OSD (on Screen display) superimposer under the condition that the memory is a second memory of a display control module for controlling the display of the display screen.
According to another aspect of the embodiments of the present invention, there is also provided a display device including: a processor; a memory for storing the processor-executable instructions; wherein the processor is configured to execute the instructions to implement any of the screen display methods.
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, in which instructions, when executed by a processor of an electronic device, enable the electronic device to perform any one of the screen display methods.
In the embodiment of the invention, a mode of identifying the scene image in the preset range of the display screen is adopted to determine whether the candid camera equipment or the candid camera action exists in the preset range of the display screen, and the display screen is controlled to be switched into the second display picture under the condition of determining that the candid camera equipment or the candid camera action exists in the preset range of the display screen, because the second display picture is cached in the memory in advance, the effect of quickly switching the display picture is achieved, and the technical problem of longer picture switching time when the current picture of the display is switched in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
fig. 1 is a flowchart of a screen display method according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a switching of a signal source by a VGA/HDMI switch in a related art video display method;
FIG. 3 is a block diagram of an integrated data protection device system using a signal source switch in a related art video display method;
fig. 4 is a system configuration diagram of a separate data protection apparatus in a screen display method according to an alternative embodiment of the present invention;
fig. 5 is a schematic diagram of a system memory storing HDMI signals and a preset warning screen in the screen display method according to the alternative embodiment of the present invention;
FIG. 6 is a flow chart of the operation of a separate data protection device in a method for displaying a frame in accordance with an alternative embodiment of the present invention;
FIG. 7 is a diagram illustrating a separated data protection device in a screen display method according to an alternative embodiment of the present invention;
FIG. 8 is a system configuration diagram of an integrated data protection device in a screen display method according to an alternative embodiment of the present invention;
FIG. 9 is a flowchart of the operation of the integrated data protection device in the screen display method according to an alternative embodiment of the present invention;
FIG. 10 is a schematic diagram of an integrated data protection apparatus in a screen display method according to an alternative embodiment of the present invention;
fig. 11 is a block diagram of a structure of a screen display apparatus according to an embodiment of the present invention;
fig. 12 is a block diagram illustrating a structure of a terminal according to an exemplary embodiment.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, some terms or terms appearing in the description of the embodiments of the present application are applicable to the following explanations:
(1) EDID (Extended display identification data): EDID is a standard established by VESA for display identification data when a DDC display data channel communication protocol is established. EDID data exchange is a standardized method for demonstrating the performance of the display and the source device itself. This communication is to allow the display to send its own performance characteristics (such as vendor information, maximum image size, color settings, vendor presets, limits on frequency range, etc.) to the source device, which generates video characteristics appropriate for the display requirements. EDID was originally developed for VGA interfaces on computer analog video devices and can now be used for DVI, HDMI and DisplayPort.
(2) DMA (Direct Memory Access) technique: DMA refers to an interface technology in which an external device directly exchanges data with a system memory without passing through a CPU. Reading data of the peripheral (i.e. the above-mentioned external device) into the memory or transferring data of the memory to the peripheral is generally accomplished through CPU control, such as CPU program query or interrupt manner. The data transmission is carried out by using the interruption, so that the utilization rate of the CPU can be greatly improved. However, the use of interrupt transfer has its drawbacks, and for a high speed I/O device, and for the case of bulk data exchange, only DMA can be used to solve the efficiency and speed problems. DMA exchanges data directly between the peripheral and the memory without passing through the CPU, so that the speed of data transfer depends on the operating speed of the memory and the peripheral. The entire data transfer operation is performed under the control of a so-called "DMA controller". The CPU may do other work during the transfer, in addition to doing little processing at the beginning and end of the data transfer. Thus, most of the time, the CPU and the input/output are in parallel operation.
(3) OSD (on-screen display, screen menu adjustment mode): the OSD core is to display desired characters on a screen of a display using a character generation chip. The technical method comprises the following steps: the colors of some pixels in the image are attached or changed synchronously with the image in real time, so that the pixels are combined into data which can be recognized in the image by human beings. By changing a specific OSD control register in a fixed or unfixed way, the dynamic effect can be achieved.
Example 1
According to an embodiment of the present invention, there is provided an embodiment of a screen display method, it should be noted that the steps shown in the flowchart of the drawings may be executed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that here.
Fig. 1 is a screen display method according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
step S102, acquiring a scene image of a display screen within a preset range, wherein a first display picture is displayed on the display screen;
step S104, identifying the acquired scene image, and determining whether a candid camera or candid camera behavior exists in a preset range of the display screen;
and S106, under the condition that the display screen is determined to have the candid equipment or candid behavior in the preset range, controlling the display screen to switch the first display picture into a second display picture which is cached in the memory in advance.
Through the steps, whether the candid camera or the candid camera behavior exists in the preset range of the display screen is determined by adopting a mode of identifying the scene image in the preset range of the display screen, and under the condition that the candid camera or the candid camera behavior exists in the preset range of the display screen, the display screen is controlled to be switched into the second display picture which is cached in the memory in advance, so that the effect of quickly switching the display picture can be achieved, and the technical problem that the picture switching time is long when the current display picture of the display is closed in the related technology is solved.
As an optional embodiment, a scene image within a preset range of a display screen is collected, wherein a first display picture is displayed on the display screen. The first display picture is the picture currently displayed by the display screen, and the first display picture is controlled and displayed by the PC host. When a user processes affairs through a computer, a picture containing affair processing data can be displayed on a display screen, and the user has the requirement of data confidentiality and needs to protect the display picture. When the display screen is protected, the scene image within the preset range of the display screen can be collected to detect the scene within the preset range of the display screen. It should be noted that the device for acquiring the scene image within the preset range of the display screen may be an external device or an internal device, and corresponding settings may be performed according to the actual application scene, so that the user may have more choices, and the application range is expanded.
As an optional embodiment, the captured scene image is recognized, and it is determined whether a candid device or a candid behavior exists within a preset range where the display screen is located. When the collected scene image is identified, the scene image can be processed in various ways, for example, the scene image can be detected in real time through an artificial intelligence-based target detection method to detect whether candid shooting equipment exists, and the scene image can be detected in real time through an artificial intelligence-based photographing behavior identification method to detect whether candid shooting behavior exists. The possibility that the picture displayed by the display is candid by a candid device can be effectively avoided.
As an optional embodiment, in a case that it is determined that a candid device or a candid behavior exists within a preset range where the display screen is located, the display screen is controlled to switch the first display picture to the second display picture cached in the memory in advance. The first display picture is a picture obtained by acquiring an external video signal in real time through image acquisition equipment, and the second display picture can be a picture comprising warning information so as to warn a user that candid equipment or candid behavior exists within a preset range, so that the user can be prevented. After the candid camera equipment or the candid camera action is detected, the display screen is controlled to switch the pictures, so that the display pictures needing to be protected are switched to other pictures, and the data displayed by the display pictures are prevented from being leaked. When the surreptitious shooting equipment or surreptitious shooting behavior is not found around, the first display picture stored in the memory is transmitted to the display screen, and the display screen displays normally at the moment; when surreptitious shooting equipment or surreptitious shooting behaviors are found around, the second display picture pre-cached in the memory can be rapidly transmitted to the display screen for display, the display process is generally within a few milliseconds, and when the surreptitious shooting equipment or the surreptitious shooting behaviors exist all the time, the second display picture is always displayed on the display screen, so that data protection is effectively carried out.
As an optional embodiment, when the display screen is controlled to switch the first display screen to the second display screen cached in the memory in advance, the following manner may be adopted:
and under the condition that the memory is a first memory for caching a first display picture to be displayed on the display screen, a second display picture is also stored in the first memory, and the second display picture in the first memory is transmitted to the display screen through the data transmission interface for displaying under the condition that the candid equipment or the candid behavior exists in the preset range where the display screen is positioned. The second display picture is read from the first storage and transmitted to the display screen for displaying, wherein the display screen can display the first display picture, and the first display picture is obtained by acquiring an external video signal in real time through the image acquisition equipment, so that the display screen can display a picture obtained by acquiring the external video signal in real time through the image acquisition equipment, namely a picture which is watched by a user; the display screen can also display a second display picture, namely a preset warning picture. That is, the HDMI (High Definition Multimedia Interface) signal of the current picture or the preset warning picture can be displayed on the display screen by determining the condition that the display screen is within the preset range. The HDMI signal capable of displaying the current picture in the display screen is obtained by rapidly transmitting the acquired external HDMI signal to the first memory and updating the HDMI signal in real time, so that smooth pictures can be displayed on the display screen, and the warning picture is composed of one or more fixed pictures and resides in the first memory. When determining which kind of picture in the first storage is displayed, the CPU in the data protection device may determine, that is, may determine according to a situation that the display screen is within a preset range, and in time invoke the display module to transmit the corresponding display picture to the display screen for display, and when invoking the corresponding display picture to transmit to the display screen for display, various modes may be adopted, for example: and calling the system service of the display card, directly refreshing the display memory and the like. It should be noted that the HDMI signal is obtained from a Video signal output by a PC (Personal Computer) host, and when the Video signal output by the PC host is an HDMI signal, the HDMI signal is directly acquired and read into the first memory by using a DMA method, and when the Video signal output by the PC host is a VGA (Video Graphics Array) signal, the VGA signal is converted into the HDMI signal and then acquired, and read into the first memory by using a DMA method. The acquired HDMI signals are read into the first memory, a DMA direct memory access technology can be used, the HDMI signals used for displaying the current picture and the warning picture are stored in the first memory, the time delay of reading the corresponding signal source from the first memory and transmitting the signal source to the display screen is short, generally within a few milliseconds, and therefore a user can hardly feel the time delay when the display screen is normally used or the display screen picture is switched, the experience of the user is improved, and data leakage is effectively prevented.
As an alternative embodiment, when the display screen is controlled to switch the first display screen to the second display screen pre-cached in the memory, the following method may also be adopted: and under the condition that the memory is a second memory of a display control module for controlling the display of the display screen, a screen menu type OSD superimposer is adopted to superimpose and display a second display picture pre-cached in the second memory on the first display picture in an opaque mode. When implemented using an on-screen menu type OSD superimposer, the display controller supports the display of text or graphics on the display screen in the manner of an OSD, with display speed also on the order of milliseconds. The warning picture content is preset in the display controller, the functions of picture hiding and warning picture displaying are realized through the display controller, namely the warning picture is quickly superposed on a normal picture for displaying by using an OSD method according to a screen picture superposition mode. When the screen menu type OSD superimposer is used for superimposing the warning pictures, the second display picture can be obtained by adjusting the display proportion of the first display picture and the second display picture and is superimposed and displayed on the first display picture in an opaque mode. Namely, in the process of overlapping the warning picture and the normal display picture, the opaque effect of the warning picture can be realized by adjusting the proportion between the warning picture and the normal display picture.
Based on the above embodiments and alternative embodiments, an alternative implementation is provided, which is described in detail below.
With the enhancement of computer functions and the popularization of computer applications, many transactions need to be processed by computers at present, and data displayed on a computer display screen can be stolen by taking pictures and the like, so that data leakage is caused. In order to prevent candid shooting of a computer display screen, an anti-shooting display system and an anti-shooting method (CN 201811171034) based on computer vision are proposed in the prior art, which include a display, an image collector, a memory, and a processor, and are used for identifying image information collected by the image collector and comparing the image information with preset characteristic information in the memory to determine whether candid shooting equipment exists or not. The method adopts the measure of closing the display of the display to prevent the candid shooting when judging that the candid shooting equipment or the candid shooting action exists. When a photographing threat is found, a normal picture displayed by a display needs to be quickly hidden, and the hidden picture needs to be completed in a short time, generally within 50 milliseconds, so that the purpose of information protection is achieved. Meanwhile, a warning picture needs to be displayed for prompting the user. In this method, a specific operation of switching the display screen of the display is not disclosed.
In the related art, the following two conventional methods can be adopted to complete the normal screen hiding and the warning screen displaying.
(1) Turning off the power to the display:
the power supply of the display is directly cut off under the control of hardware, however, when the display is powered on, the PC host computer needs to carry out EDID communication with the display, the display is slow to restore the display speed, and the user experience is influenced by the black screen of the display after the power failure.
(2) Switching the display source using a switcher:
fig. 2 is a schematic diagram of switching a signal source through a VGA/HDMI switch in a related art picture display method, as shown in fig. 2, the VGA switch is a device capable of outputting multiple VGA signals to one or more display terminals, and the HDMI switch is a device capable of outputting multiple HDMI signals to one or more display terminals. There is a data protection method that switches a signal source by using a VGA switch or an HDMI switch to switch off a display screen of a display, thereby protecting important data from being captured by a secret. However, when the signal source is switched, the signal source device needs to perform EDID communication with the display again, so that the screen of the display can display the picture after being blacked for several seconds (about 2 s), which affects the user experience.
For example, fig. 3 is a system structure diagram of an integrated data protection device using a signal source (VGA/HDMI) switch in a picture display method in the related art, as shown in fig. 3, each time a normal display picture and a warning picture are switched, EDID communication is required between a display and a display interface of a PC host or a display interface of an internal CPU, for example, when a candid device or a candid action is detected, the CPU sends an instruction to the switch to instruct the switch to switch the display source, however, in the process of switching a normal display picture (a picture transmitted by the display interface of the PC host) to a warning picture (a picture transmitted by the display interface of the internal CPU), the display needs to perform EDID communication with the host, a screen of the display may appear as a black screen or a screen flash phenomenon, and the switching of the picture can be completed after several seconds, when the candid device or the candid action disappears, the EDID communication needs to be performed when the normal display picture is switched back, which requires a long waiting time of a user, and the switching picture is slow and affects user experience.
The two methods relate to the EDID data exchange process, the time for hiding and displaying the picture is long, the process of alternating brightness and darkness of the screen is required for multiple times, the user experience is not good, and the effective information protection is not easy to form.
In view of this, the optional embodiments of the present invention provide two methods for displaying images, so that when data on a computer display screen is captured or an alarm is released, the images and the displayed images can be quickly hidden without EDID communication between a display and a host, and therefore, a black screen or a flash screen phenomenon does not occur, and the following describes the optional embodiments of the present invention in detail:
the video content switching method comprises the following steps:
the separated data protection device switches the display picture of the display screen by using a video content switching method. Fig. 4 is a system configuration diagram of a separate data protection apparatus in a screen display method according to an alternative embodiment of the present invention, and as shown in fig. 4, the separate data protection apparatus includes a plurality of apparatuses, and the apparatuses will be described first.
(1) External environment image acquisition device:
and acquiring a scene image relative to the display screen, and sending the scene image to the AI processing unit. And the data protection device is connected and communicated with the data protection device through an external interface (such as a USB interface).
(2) An AI processing unit:
the device is used for detecting the candid shooting equipment or candid shooting behavior of the scene image collected by the external environment image collecting device and sending a signal to the CPU according to the detection result. For example, the scene image is detected in real time by using an artificial intelligence-based target detection method or a photographing behavior recognition method, and if a candid camera or candid behavior is detected, a warning signal is sent to the CPU, and if the candid camera or candid behavior is not detected, a safety signal can be sent to the CPU.
(3)CPU：
And detecting the type of the signal, and after detecting the warning signal, the CPU gives the control right to the display control module.
(4) A display control module:
the display control module is used for reading a corresponding signal source from a system memory and transmitting the signal source to a display screen, and the function of the display control module is provided by an operating system. Wherein, DMA direct memory access technology is adopted when the video signal is read into the system memory. For example, when a warning signal is detected, a warning picture pre-stored in a system memory is transmitted to a display screen through a data transmission interface for display; and under the condition that the warning signal is not detected or the safety signal is detected, transmitting the HDMI signal in the system memory to a display screen through a data transmission interface for displaying, namely displaying a normal picture. The data transmission interface may be a VGA interface or an HDMI interface. It should be noted that, the DMA direct memory access technology is adopted when the video signal is read into the system memory, and a method of reading the signal source from the system memory is used, so that the time delay of the video signal or the warning picture of the PC host computer to the display screen is very short (generally in several milliseconds), and the user hardly feels the time delay, so that the user experience is not affected.
(5) A display screen:
under the condition that the warning signal is detected, displaying a warning picture pre-stored in a system memory by a display screen; and under the condition that the warning signal is not detected or the safety signal is detected, the display screen displays a normal picture in the system memory. The display screen always displays the video content in the system memory of the device.
(6) A system memory:
fig. 5 is a schematic diagram of a system memory storing an HDMI signal and a preset warning picture in the picture display method according to the optional embodiment of the present invention, and as shown in fig. 5, the system memory of the apparatus stores an HDMI signal and a preset warning picture, where the HDMI signal is obtained from a video signal output by a PC host, and if the signal output by the PC host is an HDMI signal, the HDMI signal is collected and read into the system memory, and if the signal output by the PC host is a VGA signal, the VGA signal is converted into an HDMI signal by a VGA-to-HDMI converter and then collected and read into the system memory.
(7) A PC host:
and outputting video signals including VGA signals and HDMI signals.
(8) The signal acquisition module:
the HDMI signal acquisition device is used for acquiring HDMI signals and reading the acquired signals into a system memory.
Fig. 6 is a flowchart of the operation of the separated data protection apparatus in the screen display method according to the alternative embodiment of the present invention, and as shown in fig. 6, the specific steps of the separated data protection apparatus for protecting data from being candid are as follows:
s1, an external environment image acquisition device acquires a scene image;
s2, the AI processing unit detects the candid equipment or candid behavior of the scene image acquired by the external environment image acquisition device;
s3, judging whether the candid camera or the candid camera behavior is detected, and sending a warning signal to the CPU under the condition that the candid camera or the candid camera behavior is detected; under the condition that the candid shooting equipment or candid shooting behavior is not detected, a safety signal is sent to a CPU;
s4, the CPU performs corresponding processing according to the detected signal, and under the condition that the CPU detects a warning signal, the CPU gives control right to the display control module, and the display control module transmits a warning picture pre-stored in a system memory to a display screen through a data transmission interface for displaying; and under the condition that the CPU does not detect the warning signal or detects the safety signal, the display control module transmits the HDMI signal in the system memory to the display screen through the data transmission interface for displaying, namely displaying a normal picture.
Fig. 6 is a flowchart of the operation of the separated data protection device in the screen display method according to the alternative embodiment of the present invention, and as shown in fig. 6, the specific steps of the separated data protection device when acquiring the video signal output by the PC host are as follows:
s1, outputting a video signal by a PC host;
s2, judging whether the signal is a VGA signal or an HDMI signal; if the video signal output by the PC host is an HDMI signal, the video signal is directly sent to the signal acquisition module; if the output is VGA signal, the VGA signal is converted into HDMI signal through the VGA-to-HDMI converter, and the obtained HDMI signal is sent to the signal acquisition module;
and S3, the signal acquisition module acquires the HDMI signals and then reads the HDMI signals into a system memory in a DMA direct memory access mode.
Fig. 7 is a schematic diagram of a separate data protection device in a screen display method according to an alternative embodiment of the present invention, and as shown in fig. 7, the separate data protection device may be composed of a display screen, a data protection device, and a host. Through the optional implementation mode of the separated data protection device, at least the following beneficial effects can be achieved:
(1) After the data protection device is started, EDID communication is only needed to be carried out once. The device collects video signals input by an external HDMI or VGA interface in real time when working, transmits a corresponding signal source (the HDMI signal or the warning picture for displaying the current picture) in a system memory to a display screen for displaying when judging that picture switching is needed, and does not need EDID communication between a display and a host when displaying no matter whether the signal source is switched or not, and the display screen does not have the phenomenon of black screen or screen flashing;
(2) When the candid camera or the candid camera acts, the display picture of the display screen is quickly switched to the warning picture, and after the candid camera or the candid camera acts disappear, the display picture is quickly switched back to the normal picture.
(II) OSD method (on-screen display) of screen menu type adjustment:
the integrated data protection device switches the display picture of the display screen by using an OSD method. Fig. 8 is a system configuration diagram of an integrated data protection device in a screen display method according to an alternative embodiment of the present invention, and as shown in fig. 8, a plurality of devices are included in the integrated data protection device, and the devices will be described first.
(1) External environment image acquisition device:
the method comprises the steps of collecting a scene image of a region opposite to a display screen, wherein an external environment image collecting device can be arranged in a data protection device, and can also be connected and communicated with the data protection device through a data transmission interface (such as a USB interface) by using an external environment image collecting device.
(2) An AI processing unit:
the device is used for detecting the candid shooting equipment or candid shooting behavior of the scene image collected by the external environment image collecting device and sending a signal to the CPU according to the detection result.
(3)CPU：
The signal type is detected and communicated to a display controller.
(4) A display controller:
and processing a video signal (VGA/HDMI) output by the PC host, wherein an OSD superimposer in the display controller is used for superimposing the warning picture on the normal picture.
(5) A display screen:
and displaying a normal picture, or displaying a picture formed by superposing the warning picture on the normal picture.
(6) A PC host:
and outputting video signals including VGA signals and HDMI signals.
Fig. 9 is a flowchart of the operation of the integrated data protection device in the screen display method according to the alternative embodiment of the present invention, and as shown in fig. 9, the specific steps of the integrated data protection device for protecting data from being captured by candid camera are as follows:
s1, an external environment image acquisition device acquires a scene image relative to a display screen, and an internal or external environment image acquisition device is used for acquiring the scene image;
s2, sending the scene image to an AI processing unit, and detecting the scene image in real time by the AI processing unit by using an artificial intelligence-based target detection method or a photographing behavior identification method;
s3, if the candid equipment or the candid behavior is detected, a warning signal is sent to a CPU; if the candid camera equipment or candid camera behavior is not detected, a safety signal can be sent to the CPU;
and S4, the CPU executes different operations according to different detected signals. After detecting the warning signal, the CPU communicates with the display controller and sends a warning command; the CPU sends a safety command when it detects a safety signal (in the case where the safety signal and the warning signal are not detected, the safety command is also sent).
And S5, the display controller executes different operations according to different received instructions. After the display controller receives the command, if the command is a warning command, an OSD (on-screen display) superimposer in the display controller superimposes the warning picture on a normal display picture and transmits the warning picture to a display screen for displaying; if the command is a safety command, the command is not superposed, and the display controller transmits a normal picture to the display screen for displaying.
The warning screen is stored in advance in the memory of the display controller. When the OSD superimposer is used, the opaque (Blending) effect of the warning picture can be realized by adjusting the proportion between the warning picture and the normal display picture in the process of superimposing the warning picture and the normal display picture.
Fig. 10 is a schematic diagram of an integrated data protection device in a screen display method according to an alternative embodiment of the present invention, and as shown in fig. 10, the integrated data protection device may be composed of a display screen, an external environment image capture device, and a host. Through the optional implementation mode of the integrated data protection device, at least the following beneficial effects can be achieved:
(1) According to the detection result of the AI processing unit, the display controller controls the display picture of the display screen, no matter whether the signal source is switched or not, the EDID communication is not needed between the display and the host during the display, and the screen of the display cannot be blacked or flashed;
(2) When the candid camera equipment or the candid camera act, the display controller can quickly use the OSD superimposer to superimpose the pre-stored warning picture on the normal picture and transmit the warning picture to the display screen for displaying, and after the candid camera equipment or the candid camera act disappears, the warning picture is displayed back to the normal picture
It should be noted that for simplicity of description, the above-mentioned method embodiments are shown as a series of combinations of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes several instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the method of the embodiments of the present invention.
Example 2
According to an embodiment of the present invention, there is further provided an apparatus for implementing the screen display method, and fig. 11 is a block diagram of a structure of the screen display apparatus according to the embodiment of the present invention, as shown in fig. 11, the apparatus includes: an acquisition module 1102, a processing module 1104, and a control module 1106, which are described in detail below.
The system comprises an acquisition module 1102 and a display module, wherein the acquisition module is used for acquiring a scene image of a display screen within a preset range, and a first display picture is displayed on the display screen; the processing module 1104 is connected to the acquisition module 1102 and is configured to identify the acquired scene image and determine whether a candid camera or a candid camera behavior exists in a preset range where the display screen is located; and a control module 1106, connected to the processing module 1104, configured to control the display to switch the first display frame to a second display frame pre-cached in the memory when it is determined that the display has a candid camera or candid camera within a preset range.
As an alternative embodiment, the control module 1106 further comprises: the first control unit is used for transmitting a second display picture in the first storage to the display screen through the data transmission interface to display under the condition that the first storage is used for caching the first display picture to be displayed on the display screen, the first display picture is a picture obtained by acquiring an external video signal in real time through the image acquisition equipment, and the condition that the candid equipment or the candid behavior exists in the preset range where the display screen is located is determined.
As an alternative embodiment, the control module 1106 further comprises: and the second control unit is used for superposing and displaying a second display picture pre-cached in the second memory on the first display picture in an opaque mode by adopting an on-screen menu type OSD superimposer under the condition that the memory is a second memory of a display control module for controlling display of the display screen.
It should be noted that the acquiring module 1102, the processing module 1104 and the control module 1106 correspond to steps S102 to S106 in implementing the screen display method, and the implementation examples and application scenarios of the modules and the corresponding steps are the same, but not limited to the disclosure of the above embodiment 1.
Example 3
The embodiment of the disclosure can provide a display device, which may be a terminal or a server. In this embodiment, the display device may be any one of computer terminal devices in a computer terminal group as a terminal. Optionally, in this embodiment, the terminal may also be a terminal device such as a mobile terminal.
Optionally, in this embodiment, the terminal may be located in at least one network device of a plurality of network devices of a computer network.
Alternatively, fig. 12 is a block diagram illustrating a structure of a terminal according to an exemplary embodiment. As shown in fig. 12, the terminal may include: one or more processors 121 (only one shown), a memory 122 for storing processor-executable instructions; wherein the processor is configured to execute the instructions to implement any of the screen display methods described above.
The memory may be configured to store software programs and modules, such as program instructions/modules corresponding to the image display method and apparatus in the embodiments of the disclosure, and the processor executes various functional applications and data processing by running the software programs and modules stored in the memory, so as to implement the image display method. The memory may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include memory located remotely from the processor, and these remote memories may be connected to the computer terminal through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The processor can call the information and application program stored in the memory through the transmission device to execute the following steps: acquiring a scene image of a display screen within a preset range, wherein a first display picture is displayed on the display screen; identifying the acquired scene image, and determining whether a candid device or a candid behavior exists in a preset range where the display screen is located; and under the condition that the display screen is determined to have the candid shooting equipment or the candid shooting behavior within the preset range, controlling the display screen to switch the first display picture into a second display picture which is cached in the memory in advance.
Optionally, the processor may further execute the program code of the following steps: the method for controlling the display screen to switch the first display picture into the second display picture cached in the memory in advance comprises the following steps: under the condition that the memory is a first memory for caching a first display picture to be displayed on the display screen, a second display picture is also stored in the first memory, the first display picture is a picture obtained by acquiring an external video signal in real time through image acquisition equipment, and the second display picture in the first memory is transmitted to the display screen through the data transmission interface to be displayed under the condition that candid equipment or candid behavior exists in a preset range where the display screen is located.
Optionally, the processor may further execute the program code of the following steps: under the condition that the memory is a second memory of a display control module for controlling the display of the display screen, the method for controlling the display screen to switch the first display picture into a second display picture pre-cached in the second memory comprises the following steps: and a second display picture pre-cached in the memory is superposed and displayed on the first display picture in an opaque mode by adopting an on-screen menu type OSD superimposer.
Optionally, the processor may further execute the program code of the following steps: and the second display picture is obtained by adjusting the display proportion of the first display picture and the second display picture and is superposed and displayed on the first display picture in an opaque mode.
Optionally, the processor may further execute the program code of the following steps: the second display frame is a frame including warning information.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by a program instructing hardware associated with the terminal device, where the program may be stored in a computer-readable storage medium, and the storage medium may include: flash disks, read-Only memories (ROMs), random Access Memories (RAMs), magnetic or optical disks, and the like.
Example 4
In an exemplary embodiment, there is also provided a computer-readable storage medium including instructions that, when executed by a processor of a terminal, enable the terminal to perform any one of the screen display methods described above. Alternatively, the computer readable storage medium may be a non-transitory computer readable storage medium, for example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Alternatively, in this embodiment, the computer-readable storage medium may be used to store program codes executed by the screen display method provided in the above-described embodiment.
Optionally, in this embodiment, the computer-readable storage medium may be located in any one of a group of computer terminals in a computer network, or in any one of a group of mobile terminals.
Optionally, in this embodiment, the computer readable storage medium is configured to store program code for performing the following steps: acquiring a scene image of a display screen within a preset range, wherein a first display picture is displayed on the display screen; identifying the acquired scene image, and determining whether a candid device or a candid behavior exists in a preset range where the display screen is located; and under the condition that the display screen is determined to have the candid shooting equipment or the candid shooting behavior within the preset range, controlling the display screen to switch the first display picture into a second display picture which is cached in the memory in advance.
Optionally, controlling the display screen to switch the first display frame to a second display frame pre-cached in the memory includes: under the condition that the memory is a first memory for caching a first display picture to be displayed on the display screen, a second display picture is also stored in the first memory, the first display picture is a picture obtained by acquiring an external video signal in real time through image acquisition equipment, and the second display picture in the first memory is transmitted to the display screen through the data transmission interface to be displayed under the condition that the display screen is determined to have candid equipment or candid behavior within a preset range.
Optionally, in this embodiment, a computer-readable storage medium is configured to store program code for performing the steps of: under the condition that the memory is a second memory of a display control module for controlling the display of the display screen, the method for controlling the display screen to switch the first display picture into a second display picture pre-cached in the second memory comprises the following steps: and a second display picture pre-cached in the memory is superposed and displayed on the first display picture in an opaque mode by adopting an on-screen menu type OSD superimposer.
Optionally, in this embodiment, the computer readable storage medium is configured to store program code for performing the following steps: and the second display picture is obtained by adjusting the display proportion of the first display picture and the second display picture and is superposed and displayed on the first display picture in an opaque mode.
Optionally, in this embodiment, the computer readable storage medium is configured to store program code for performing the following steps: the second display picture is a picture comprising warning information.
In an exemplary embodiment, there is also provided a computer program product, which, when executed by a processor of an electronic device, enables the electronic device to perform the screen display method of any one of the above.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described in detail in a certain embodiment.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be an indirect coupling or communication connection through some interfaces, units or modules, and may be electrical or in other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A picture display method, comprising:
acquiring a scene image of a display screen within a preset range, wherein a first display picture is displayed on the display screen;
identifying the acquired scene image, and determining whether a candid camera or candid camera behavior exists in a preset range of the display screen;
under the condition that the display screen is determined to have the candid equipment or candid behavior in the preset range, controlling the display screen to switch the first display picture into a second display picture cached in a memory in advance;
wherein the controlling the display screen to switch the first display frame to a second display frame pre-cached in a memory comprises: the method for switching the first display picture into the second display picture pre-cached in the memory by controlling the display screen by the display control module of the display screen comprises the following steps: and the display control module transmits a second display picture pre-cached in the system memory to the display screen for displaying by adopting a method of reading the signal source from the system memory.
2. The method according to claim 1, wherein the controlling the display screen to switch the first display screen to a second display screen pre-buffered in a memory comprises:
under the condition that the memory is a first memory for caching a first display picture to be displayed on the display screen, a second display picture is also stored in the first memory, the first display picture is a picture obtained by acquiring an external video signal in real time through an image acquisition device, and the second display picture in the first memory is transmitted to the display screen through a data transmission interface to be displayed under the condition that a candid device or a candid behavior exists in a preset range where the display screen is located.
3. The method according to claim 1, wherein the controlling the display screen to switch the first display screen to a second display screen pre-cached in a memory comprises:
and under the condition that the memory is a second memory of a display control module for controlling the display of the display screen, a screen menu type OSD superimposer is adopted to superimpose and display the second display picture pre-cached in the second memory on the first display picture in an opaque mode.
4. The method according to claim 3, wherein the second display screen is obtained by adjusting a display scale of the first display screen and the second display screen and is displayed on the first display screen in an opaque manner.
5. The method according to any one of claims 1 to 4, wherein the second display screen is a screen including warning information.
6. An image display device, comprising:
the system comprises an acquisition module, a display module and a control module, wherein the acquisition module is used for acquiring a scene image of a display screen within a preset range, and a first display picture is displayed on the display screen;
the processing module is used for identifying the acquired scene image and determining whether candid equipment or candid behavior exists in a preset range where the display screen is located;
the control module is used for controlling the display screen to switch the first display picture into a second display picture which is cached in a memory in advance under the condition that the display screen is determined to have the candid shooting equipment or the candid shooting behavior in the preset range;
wherein the control module comprises: a third control unit, configured to control, by a display control module of a display screen, the display screen to switch the first display screen to a second display screen pre-cached in a memory, where the third control unit includes: and the first control subunit is used for transmitting the second display picture pre-cached in the system memory to the display screen for displaying by the display control module by adopting a method of reading the signal source from the system memory.
7. The apparatus of claim 6, wherein the control module comprises:
the first control unit is used for transmitting the second display picture in the first storage to the display screen through a data transmission interface for displaying under the condition that the storage is the first storage for caching the first display picture to be displayed on the display screen, the first storage also stores the second display picture, the first display picture is a picture obtained by acquiring an external video signal in real time through image acquisition equipment, and the situation that the display screen is positioned in a preset range and has a candid shooting device or candid shooting behavior is determined.
8. The apparatus of claim 6, wherein the control module comprises:
and the second control unit is used for superposing and displaying the second display picture pre-cached in the second memory on the first display picture in an opaque mode by adopting an OSD (on Screen display) superimposer under the condition that the memory is a second memory of a display control module for controlling the display of the display screen.
9. A display device, comprising:
a processor;
a memory for storing the processor-executable instructions;
wherein the processor is configured to execute the instructions to implement the screen display method of any one of claims 1 to 5.
10. A computer-readable storage medium, wherein instructions in the computer-readable storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the screen display method of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111204442.4A CN113849148B (en) | 2021-10-15 | 2021-10-15 | Picture display method and device, display equipment and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111204442.4A CN113849148B (en) | 2021-10-15 | 2021-10-15 | Picture display method and device, display equipment and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113849148A CN113849148A (en) | 2021-12-28 |
| CN113849148B true CN113849148B (en) | 2022-11-22 |
Family
ID=78978564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111204442.4A Active CN113849148B (en) | 2021-10-15 | 2021-10-15 | Picture display method and device, display equipment and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113849148B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118194380A (en) * | 2024-04-02 | 2024-06-14 | 北京华中创世科技发展有限公司 | Screen anti-stealthy shooting equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001169175A (en) * | 1999-12-09 | 2001-06-22 | Sharp Corp | Image pickup device, image receiver and line exchange |
| CN110031852A (en) * | 2019-04-17 | 2019-07-19 | 深圳市安特保电子商务集团有限公司 | It is a kind of for detecting the method, apparatus and storage device of equipment of taking on the sly |
| CN110457963A (en) * | 2019-08-20 | 2019-11-15 | Oppo（重庆）智能科技有限公司 | Display control method, device, mobile terminal and computer readable storage medium |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9336405B2 (en) * | 2014-09-02 | 2016-05-10 | International Business Machines Corporation | Photographic copy prevention of a screen image |
| US9679541B2 (en) * | 2014-12-08 | 2017-06-13 | Nxp Usa, Inc. | Method of displaying a pixel of an image on a screen based on a location of the pixel on the screen |
| CN105306543A (en) * | 2015-09-25 | 2016-02-03 | 深圳Tcl数字技术有限公司 | Picture sharing method and device |
| CN105955684A (en) * | 2016-04-22 | 2016-09-21 | 北京小米移动软件有限公司 | Image display method and apparatus |
| CN106161789A (en) * | 2016-06-30 | 2016-11-23 | 努比亚技术有限公司 | A kind of mobile terminal, the device and method of switching screen locking wallpaper |
| CN111523384A (en) * | 2020-03-19 | 2020-08-11 | 浙江省北大信息技术高等研究院 | Vision-based conference anti-candid method and device, storage medium and terminal |
| CN111711794A (en) * | 2020-06-22 | 2020-09-25 | 上海辰珅科技有限公司 | Anti-candid image processing method and device, terminal and storage medium |
| CN111950042B (en) * | 2020-08-25 | 2023-11-24 | 西安万像电子科技有限公司 | Image data processing method, system and device |
| CN112765689B (en) * | 2020-12-31 | 2022-02-15 | 珠海格力电器股份有限公司 | Data processing method, device, equipment and medium |
-
2021
- 2021-10-15 CN CN202111204442.4A patent/CN113849148B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001169175A (en) * | 1999-12-09 | 2001-06-22 | Sharp Corp | Image pickup device, image receiver and line exchange |
| CN110031852A (en) * | 2019-04-17 | 2019-07-19 | 深圳市安特保电子商务集团有限公司 | It is a kind of for detecting the method, apparatus and storage device of equipment of taking on the sly |
| CN110457963A (en) * | 2019-08-20 | 2019-11-15 | Oppo（重庆）智能科技有限公司 | Display control method, device, mobile terminal and computer readable storage medium |
Non-Patent Citations (2)
| Title |
|---|
| Multiple guidance of light using asymmetric micro prism arrays for privacy protection of device displays;H. Lee等;《Optics Express》;20210115;第2884-2892页 * |
| 防偷窥显示系统专利技术综述;高慧霞等;《中国新通信》;20170315(第05期);第105-106页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113849148A (en) | 2021-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111225150B (en) | Method for processing interpolation frame and related product | |
| US5808588A (en) | Shutter synchronization circuit for stereoscopic systems | |
| JP2015114798A (en) | Information processor, information processing method, and program | |
| JP5464130B2 (en) | Information display system, apparatus, method and program | |
| CN113849148B (en) | Picture display method and device, display equipment and computer readable storage medium | |
| CN112433689A (en) | Data transmission method and device for same-screen device, same-screen device and medium | |
| CN110196634B (en) | Providing images using scaler chips in direct communication with eye tracking devices | |
| CN106200936A (en) | Sight protectio method based on terminal unit, device and terminal unit | |
| CN111294543A (en) | System and method for video monitoring photographing protection | |
| CN107317687B (en) | Remote control method, equipment and system | |
| US10769094B2 (en) | Configuration options for display devices | |
| JP2011186572A (en) | Video display device system | |
| KR20190012090A (en) | Wearable Device with Thermal Imaging Function | |
| CN104469478B (en) | Information processing method, device and electronic equipment | |
| KR102607690B1 (en) | Screen data leakage prevention apparatus and method | |
| CN115802096A (en) | Multi-path HDMI cooperative control method and system | |
| CN209344483U (en) | Connecting line, equipment to be powered and electronic equipment | |
| CN110381280B (en) | Electronic device with display unit and display system | |
| CN110941344B (en) | Method for obtaining gazing point data and related device | |
| CN108881999B (en) | Screen capture processing method and system | |
| US10943562B2 (en) | Display control apparatus and display control method | |
| CN111290721A (en) | Online interaction control method, system, electronic device and storage medium | |
| KR102336165B1 (en) | Computer program for preventing information spill displayed on display device and security service using the same | |
| CN109040614A (en) | A kind of more picture video processor scene processing systems | |
| CN112560012B (en) | Safety protection display |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |