CN115529482A

CN115529482A - Screen recording prevention method and related device

Info

Publication number: CN115529482A
Application number: CN202110713068.4A
Authority: CN
Inventors: 矫佩佩; 李蕾; 陈维强
Original assignee: Hisense Group Holding Co Ltd
Current assignee: Hisense Group Holding Co Ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-12-27

Abstract

The embodiment of the application provides a method and a related device for preventing screen recording. And if the target equipment is detected, stopping the currently played video content. The target image is an image within a preset angle range of the display for displaying the video picture direction, and the target device is an electronic device with a screen recording function. In the process of playing the video, the target image is detected to determine whether target equipment which is possibly recording the screen exists around the display, and the playing of the video content is stopped after the target equipment is detected, so that the condition that the video content is recorded under the condition of not allowing is relieved.

Description

Screen recording prevention method and related device

Technical Field

The present invention relates to the field of information processing technologies, and in particular, to a method and a related apparatus for preventing screen recording.

Background

With the rapid development of internet technology, the overall production value of the network copyright industry increases year by year. Meanwhile, the internet is also called a high-incidence area of infringement piracy. Network piracy presents a serious challenge to the copyright industry with innovation as the core, and screen recording is the most common and most difficult means for stealing video content. In the related art, the recorded screen infringement is prevented by means of methods such as prohibiting a browser from executing a recorded screen plug-in, adding a copyright identification in video content, and the like. However, after the video content is processed by post-editing and the like, the screen recording prevention mode is no longer effective. Based on this, how to effectively prevent the recording screen from displaying becomes important.

Disclosure of Invention

The embodiment of the application provides a screen recording prevention method and a related device, which are used for detecting electronic equipment which possibly records screen display contents on a display screen in the process of playing a video and preventing the video contents from being illegally recorded under the condition of no permission.

In a first aspect, an embodiment of the present application provides a method for preventing screen recording, where the method includes:

receiving a video signal for outputting to a display for playing in response to a video playing instruction;

in the process of outputting the video signal to the display, acquiring a target image acquired by an image acquisition device; the target image is an image in a preset angle range of the direction of displaying the video picture by the display;

detecting the target image, and stopping outputting the received video signal to the display if the target image is detected to have target equipment; the target device is an electronic device with a screen recording function.

In the embodiment, the target image acquired by the image acquisition device is detected, so that the electronic equipment which may record the display content of the display screen in the process of playing the video is detected. And after the electronic equipment which is possible to record the screen is detected, the display is controlled to stop playing the video content, so that the condition that the video content is recorded under the condition of not allowing is relieved.

In some possible embodiments, if the video playing indication is a video call indication, the acquiring the target image acquired by the image acquisition device includes:

after receiving a video frame image transmitted by opposite-end equipment of the video call, taking the video frame image as the target image; the video frame image is acquired by an image acquisition device of the opposite terminal equipment;

after the responding to the indication of the starting of the screen recording prevention function, the method further comprises the following steps:

and controlling an image acquisition device at the local end to acquire the target image.

In this embodiment, in a video call scene, a video frame image of a video peer is detected to prevent a video stream content of a home peer from being recorded. Furthermore, the local terminal image acquisition device can be controlled to acquire the local terminal target image and then detect the local terminal target image so as to prevent the local terminal from having electronic equipment which is likely to record a screen.

In some possible embodiments, if the video playing indication indicates that an audio/video file is played, the acquiring the target image acquired by the image acquisition device includes:

and controlling an image acquisition device at the local end to acquire the target image based on a preset time interval in the process of playing the audio and video file.

In the scene of playing the audio/video file, the embodiment controls the local terminal image acquisition device to acquire the local terminal target image at preset time intervals, and further prevents the played video content from being recorded by detecting whether the target device with the screen recording function exists in the target image.

In some possible embodiments, after the stopping of the output of the received video signal to the display, the method further comprises:

generating a selection control for indicating that the video signal is output to the display again, and outputting the selection control to the display for showing;

the method further comprises the following steps:

and in response to the confirmation operation of the selection control, outputting the video signal to the display again.

In this embodiment, after it is detected that the electronic device with the screen recording function exists in the target image, the display is first controlled to stop displaying the current video content, and a selection control for selecting whether to continue playing the video content is provided to the user. The user can freely select whether to continue playing the video according to actual conditions.

In some possible embodiments, the method further comprises:

and aiming at the target image of the detected target equipment, the target equipment is output to the display for showing after being highlighted in the target image.

In this embodiment, after it is detected that the target image has the electronic device with the screen recording function, the electronic device is output to the user for display after the target image is labeled, so that the user finds the electronic device and determines whether the electronic device is currently recording the screen.

In a second aspect, an embodiment of the present application provides a display device, including: display, image collector and controller, wherein:

the display is used for displaying information;

the image collector is used for collecting images;

the controller is respectively connected with the display and the image collector and is configured to:

responding to a video playing instruction, receiving a video signal for outputting to a display for playing;

in the process of outputting the video signal to the display, acquiring a target image acquired by an image acquisition device; the target image is an image within a preset angle range of the display displaying video picture direction;

detecting the target image, and if detecting that target equipment exists in the target image, stopping outputting the received video signal to the display; the target device is an electronic device with a screen recording function.

In some possible embodiments, if the video playing indication is a video call indication, the acquiring of the target image acquired by the image acquisition device is performed, and the controller is configured to:

after executing the indication responsive to the enablement of the anti-screen-recording function, the controller is further configured to:

In some possible embodiments, if the video playing indication indicates that an audio/video file is played, the acquiring of the target image acquired by the image acquisition device is performed, and the controller is configured to:

and controlling an image acquisition device at the local terminal to acquire the target image based on a preset time interval in the process of playing the audio and video file.

In some possible embodiments, after performing the stopping of the outputting of the received video signal to the display, the controller is further configured to:

the controller is further configured to:

In some possible embodiments, the controller is further configured to:

and aiming at the target image of the detected target equipment, the target equipment is output to the display for display after being highlighted in the target image.

In a third aspect, an embodiment of the present application further provides a computer-readable storage medium, where instructions, when executed by a processor of an electronic device, enable the electronic device to perform any one of the methods as provided in the first aspect of the present application.

Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1a is a schematic view of a screen recording prevention of a ticker player provided in an embodiment of the present application;

fig. 1b is a schematic view of a recording prevention screen of a question answering player according to an embodiment of the present application;

fig. 2 is a schematic view of an application scenario of a method for preventing screen recording according to an embodiment of the present application;

fig. 3 is a block diagram of a hardware configuration of a display device 200 in an application environment schematic diagram provided in an embodiment of the present application;

fig. 4a is an overall flowchart of a method for preventing screen recording according to an embodiment of the present application;

fig. 4b is a schematic diagram of playing an online video by a smart television according to an embodiment of the present application

FIG. 4c is a schematic view of a viewing zone provided in the present application

Fig. 4d is a schematic diagram of an uncollected area within a viewing zone as provided by an embodiment of the present application;

fig. 4e is a schematic diagram of another non-acquisition region provided in the embodiment of the present application;

fig. 4f is a schematic diagram illustrating that a screen recording prevention function is enabled in a video call scene according to an embodiment of the present application;

fig. 4g is a schematic diagram of a target image of a target device detected according to the embodiment of the present application;

fig. 4h is a schematic diagram of a selection control provided in the embodiment of the present application;

fig. 5 is a flowchart illustrating that the smart television enables a screen recording prevention function in a video call scene according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described in detail and clearly with reference to the accompanying drawings. In the description of the embodiments of the present application, "/" indicates "or, unless otherwise specified, for example, a/B may indicate a or B; "and/or" in the text is only an association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: three cases of a alone, a and B both, and B alone exist, and in addition, "a plurality" means two or more than two in the description of the embodiments of the present application.

In the description of the embodiments of the present application, the term "plurality" means two or more unless otherwise specified, and other terms and the like should be understood as being equivalent to those of the preferred embodiments described herein for the purpose of illustration and explanation only, and not limitation, and features in the embodiments and examples of the present application may be combined with each other without conflict.

To further illustrate the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the detailed description. Although the embodiments of the present application provide method steps as shown in the following embodiments or figures, more or fewer steps may be included in the method based on conventional or non-inventive efforts. In steps where no necessary causal relationship exists logically, the order of execution of the steps is not limited to that provided by the embodiments of the present application. The method can be executed in the order of the embodiments or the method shown in the drawings or in parallel in the actual process or the control device.

In the related art, screen recording is prevented in several ways, and most commonly, copyright watermark is added in each frame of video frame image. Similarly, the video is played by a ticker player. Specifically, as shown in fig. 1a, when the ticker player plays the video content, the custom subtitles set by the video provider are overlaid on the video content at preset time intervals. In both modes, information such as user identification, contact information, enterprise copyright and the like is added to a video picture in the video playing process so as to prevent the video from being recorded and infringed. In addition, a question and answer player is used to prevent screen recording infringement, and as shown in fig. 1b, when the question and answer player plays video content, a question and answer mechanism is triggered at a certain moment when the video is played. The video content can not be played continuously until the answer is submitted to be correct. However, although the above two methods increase the difficulty of screen recording to some extent, the original video content can still be acquired by performing post-clipping processing on the video frame.

Based on this, how to effectively prevent the recording screen from displaying becomes important. In order to solve the above problems, the inventive concept of the present application is: by detecting the target image acquired by the image acquisition device, if the target equipment is detected in the target image, the currently played video content is stopped. The target image is an image within a preset angle range of the direction of the display displaying video pictures, and the target device is an electronic device with a screen recording function. In the process of playing the video, the target image is detected to determine whether target equipment which is possibly recording the screen exists around the display, and the current content is stopped playing after the target equipment is detected, so that the video content is prevented from being illegally recorded under the condition of not allowing.

After introducing the design concept of the embodiment of the present application, some simple descriptions are provided below for application scenarios to which the technical solution of the embodiment of the present application can be applied, and it should be noted that the application scenarios described below are only used for describing the embodiment of the present application and are not limited. In specific implementation, the technical scheme provided by the embodiment of the application can be flexibly applied according to actual needs.

Specifically, as shown in fig. 2, which is a schematic view of an application scenario of the method for preventing screen recording provided in the embodiment of the present application, the method includes a display device 200, a wireless access point 300, a control device 100A, and an intelligent device 100B. The display device 200 is in data communication with the wireless access point 300, and the user may operate the display device 200 through the smart device 100B or the control apparatus 100A.

In some embodiments, the control apparatus 100A may be a remote controller, and the communication between the remote controller and the display device includes at least one of an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, and the display device 200 is controlled by a wireless or wired method. The user may control the display apparatus 200 by inputting a user instruction through at least one of a key on a remote controller, a voice input, a control panel input, and the like.

In some embodiments, the smart device 100B may include any one of a mobile terminal, a tablet, a computer, a laptop, an AR/VR device, and the like.

In some embodiments, the smart device 100B may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device.

In some embodiments, the smart device 100B and the display device may also be used for communication of data.

In some embodiments, the display device 200 is also in data communication with a wireless access point 300. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The wireless access point 300 may provide various content and interactions to the display device 200.

In some possible embodiments, the display device 200 controls the image capturing apparatus to capture the target image and detect the target image during the playing of the video in response to the screen-recording prevention indication. And if the electronic equipment with the screen recording function is detected to exist in the target image, stopping playing the current video content.

In some possible embodiments, the display device 200 may be in a video call with other devices that are video enabled. The display device 200 responds to the screen recording prevention indication, and detects a video frame image transmitted by the video opposite-end device in the process of executing the video call. And if the electronic equipment with the screen recording function is detected to exist in the video frame image, terminating the video call or converting the video call into a voice call.

A hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment is exemplarily shown in fig. 3.

In some embodiments at least one of controller 250, tuner demodulator 210, communicator 220, detector 230, input/output interface 255, display 275, audio output interface 285, memory 260, power supply 290, user interface 265, external device interface 240 are included in display apparatus 200.

In some embodiments, the display 275 is configured to receive image signals from the output of the first processor and to display video content and images and components of the menu manipulation interface.

In some embodiments, the display 275, includes a display screen component for presenting a picture, and a driving component that drives the display of an image.

In some embodiments, the video content is displayed from broadcast television content, or alternatively, from various broadcast signals that may be received via wired or wireless communication protocols. Alternatively, various image contents received from a network communication protocol and transmitted from a network server side can be displayed.

In some embodiments, the display 275 is used to present a user-manipulated UI interface generated in the display device 200 and used to control the display device 200.

In some embodiments, a drive assembly for driving the display is also included, depending on the type of display 275.

In some embodiments, display 275 is a projection display and may also include a projection device and a projection screen.

In some embodiments, communicator 220 is a component for communicating with external devices or external servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi chip, a bluetooth communication protocol chip, a wired ethernet communication protocol chip, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver.

In some embodiments, the display apparatus 200 may establish control signal and data signal transmission and reception with the external control apparatus 1001 or the content providing apparatus through the communicator 220.

In some embodiments, user interface 265 may be configured to receive infrared control signals from a control device 1001 (e.g., an infrared remote control, etc.).

In some embodiments, the detector 230 is a signal used by the display device 200 to collect an external environment or interact with the outside.

In some embodiments, the detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light, and parameters changes can be adaptively displayed by collecting the ambient light, and the like.

In some embodiments, an image collector 232 in the detector 230, such as a camera, a video camera, etc., may be used to collect external environment scenes, collect attributes of a user or gestures interacted with the user, adaptively change display parameters, and also recognize user gestures, so as to implement a function of interaction with the user.

In some embodiments, the detector 230 may also include a temperature sensor or the like, such as by sensing ambient temperature.

In some embodiments, the display apparatus 200 may adaptively adjust a display color temperature of an image. For example, when the temperature is high, the display device 200 may be adjusted to display a color temperature of the image in a cool tone, or when the temperature is low, the display device 200 may be adjusted to display a warm tone.

In some embodiments, the detector 230 may further include a sound collector 231, such as a microphone, for collecting voice data, wherein when the user speaks an instruction by voice, the microphone can collect voice data including the instruction spoken by the user. For example, the sound collector 231 may collect a voice signal including a control instruction of the user to control the display device 200, or collect an ambient sound for recognizing an ambient scene type, so that the display device 200 may adaptively adapt to an ambient noise.

In some embodiments, as shown in fig. 3, the input/output interface 255 is configured to allow data transfer between the controller 250 and external other devices or other controllers 250. Such as receiving video signal data and audio signal data of an external device, or command instruction data, etc.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: the interface can be any one or more of a high-definition multimedia interface (HDMI), an analog or data high-definition component input interface, a composite video input interface, a USB input interface, an RGB port, and the like. The plurality of interfaces may form a composite input/output interface.

In some embodiments, as shown in fig. 3, the tuning demodulator 210 is configured to receive a broadcast television signal through a wired or wireless receiving manner, perform modulation and demodulation processing such as amplification, mixing, resonance, and the like, and demodulate an audio and video signal from a plurality of wireless or wired broadcast television signals, where the audio and video signal may include a television audio and video signal carried in a television channel frequency selected by a user and an EPG data signal.

In some embodiments, the frequency points demodulated by the tuner demodulator 210 are controlled by the controller 250, and the controller 250 can send out control signals according to user selection, so that the modem responds to the television signal frequency selected by the user and modulates and demodulates the television signal carried by the frequency.

In some embodiments, the broadcast television signal may be classified into a terrestrial broadcast signal, a cable broadcast signal, a satellite broadcast signal, an internet broadcast signal, or the like according to a television signal broadcasting system. Or may be classified into a digital modulation signal, an analog modulation signal, and the like according to a modulation type. Or the signals are classified into digital signals, analog signals and the like according to the types of the signals.

In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box. Therefore, the set top box outputs the television audio and video signals modulated and demodulated by the received broadcast television signals to the main body equipment, and the main body equipment receives the audio and video signals through the first input/output interface.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 may control the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object displayed on the display 275, the controller 250 may perform an operation related to the object selected by the user command.

In some embodiments, the object may be any one of selectable objects, such as a hyperlink or an icon. Operations related to the selected object, such as: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon. The user command for selecting the UI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch pad, etc.) connected to the display apparatus 200 or a voice command corresponding to a voice spoken by the user.

As shown in fig. 3, the controller 250 includes at least one of a Random Access Memory 251 (RAM), a Read-Only Memory 252 (ROM), a video processor 270, an audio processor 280, other processors 253 (e.g., a Graphics Processing Unit (GPU), a Central Processing Unit (CPU), a Communication Interface (Communication Interface), and a Communication Bus 256 (Bus)).

In some embodiments, RAM 251 is used to store temporary data for the operating system or other programs that are running.

In some embodiments, ROM 252 is used to store instructions for various system boots.

In some embodiments, the ROM 252 is used to store a Basic Input Output System (BIOS). The system is used for completing power-on self-test of the system, initialization of each functional module in the system, a driver of basic input/output of the system and booting an operating system.

In some embodiments, when the power-on signal is received, the display device 200 starts to power up, the CPU executes the system boot instructions in the ROM 252, and copies the temporary data of the operating system stored in the memory into the RAM 251 so as to start or run the operating system. After the start of the operating system is completed, the CPU copies the temporary data of the various application programs in the memory to the RAM 251, and then, the various application programs are started or run.

In some embodiments, CPU processor 254 is used to execute operating system and application program instructions stored in memory. And executing various application programs, data and contents according to various interactive instructions received from the outside so as to finally display and play various audio and video contents.

In some exemplary embodiments, the CPU processor 254 may comprise a plurality of processors. The plurality of processors may include a main processor and one or more sub-processors. A main processor for performing some operations of the display apparatus 200 in a pre-power-up mode and/or operations of displaying a screen in a normal mode. One or more sub-processors for one operation in a standby mode or the like.

In some embodiments, the graphics processor 253 is used to generate various graphics objects, such as: icons, operation menus, user input instruction display graphics, and the like. The display device comprises an arithmetic unit which carries out operation by receiving various interactive instructions input by a user and displays various objects according to display attributes. And the system comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.

In some embodiments, video processor 270 is configured to receive an external video signal, and perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image synthesis, etc., according to a standard codec protocol of the input signal, so as to obtain a signal that can be displayed or played on directly displayable device 200.

In some embodiments, the graphics processor 253 may be integrated with the video processor, or may be separately provided, where the integrated configuration may perform processing of a graphics signal output to the display, and the separate configuration may perform different functions, such as a GPU + FRC (Frame Rate Conversion) architecture.

In some embodiments, the audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform noise reduction, digital-to-analog conversion, and amplification processes to obtain an audio signal that can be played in a speaker.

In some embodiments, video processor 270 may comprise one or more chips. The audio processor may also comprise one or more chips.

In some embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated together with the controller in one or more chips.

In some embodiments, the audio output, under the control of controller 250, receives sound signals output by audio processor 280, such as: the speaker 286, and an external sound output terminal of a generating device that can output to an external device, in addition to the speaker carried by the display device 200 itself, such as: external sound interface or earphone interface, etc., and may also include a near field communication module in the communication interface, for example: and the Bluetooth module is used for outputting sound of the Bluetooth loudspeaker.

The power supply 290 supplies power to the display device 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may include a built-in power supply circuit installed inside the display apparatus 200, or may be a power supply interface installed outside the display apparatus 200 to provide an external power supply in the display apparatus 200.

The memory 260 includes a memory storing various software modules for driving the display device 200. Such as: various software modules stored in the first memory, including: at least one of a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

The base module is a bottom layer software module for signal communication between various hardware in the display device 200 and for sending processing and control signals to the upper layer module. The detection module is used for collecting various information from various sensors or user input interfaces, and the management module is used for performing digital-to-analog conversion and analysis management.

For example, the voice recognition module comprises a voice analysis module and a voice instruction database module. The display control module is used for controlling the display to display the image content, and can be used for playing the multimedia image content, UI interface and other information. And the communication module is used for carrying out control and data communication with external equipment. And the browser module is used for executing a module for data communication between browsing servers. And the service module is used for providing various services and modules including various application programs. Meanwhile, the memory 260 may also store a visual effect map for receiving external data and user data, images of various items in various user interfaces, and a focus object, and the like.

After introducing the hardware block diagram of the display device 200 provided in the embodiment of the present application, the following explains a method for preventing screen recording provided in the present application, specifically as shown in fig. 4a, including:

in order to facilitate understanding of the technical solutions provided in the embodiments of the present application, a smart television is described as an example of the display device 200 below. It should be understood that the smart television is used as the display device 200 only for convenience of explaining the technical solution of the present application, and the display device 200 is not limited. The display device 200 may be a smart television, a smart phone, a tablet computer, a desktop computer, and the like with a display function.

When a user watches an online video through the smart television, the smart television executes the step 401: in response to a video play indication, a video signal is received for output to a display for play. Specifically, as shown in fig. 4b, when a user watches an online video through the smart television, the user may receive and analyze data transmitted from the optical fiber through a receiving device such as a modem, convert the received data into a network signal, and then input the network signal to a main control device (e.g., a set top box) through a network cable. After the main control device analyzes the network signal to obtain an audio/video signal, the video signal is transmitted to the smart television through a Wifi (WIreless Fidelity) and an HDMI (High Definition Multimedia Interface) line. After receiving the video signal, the smart television outputs the video signal to the display.

In order to prevent the played video content from being recorded, in the process that the smart television outputs the video signal to the display, step 402 is executed: and acquiring a target image acquired by the image acquisition device, wherein the target image is an image in a preset angle range of the display displaying video picture direction.

When the intelligent television is implemented, the front camera carried by the intelligent television when leaving a factory can be controlled to collect images in a watching area. The viewing zone is an area where a video picture displayed by the display can be viewed. As shown in fig. 4c, the viewing zone may be determined according to the direction of the display screen of the display and the image capture range of the target device. For example, the target device may control the camera to capture images within a range of 180 ° to within 20 meters. Based on the method, the range of 180 degrees within 20 meters in front of the display screen of the intelligent television is used as a watching area. The target device is an electronic device with a screen recording function, such as a camera, a digital camera, a smart phone, a smart television, and the like.

Considering that the front camera of the smart television is mostly configured in the upper left corner or the upper right corner of the display screen, this may cause that the camera cannot completely acquire the image in the viewing area, as shown in fig. 4 d. When the target device exists in the non-acquisition area as shown in fig. 4d, the current display content of the display cannot be effectively prevented from being recorded. Moreover, the front camera of the smart television may have a smaller acquisition range than that of the target device. As shown in fig. 4e, when the acquisition range of the front camera of the smart television is smaller than that of the target device, the image in the viewing area cannot be completely captured, and there may still be an unrecovered area as shown in fig. 4 e. In order to solve the problems, the external network camera of the intelligent television can be controlled, and the acquisition range of the network camera is not less than that of the target equipment. Further, the network camera can be placed right above a display of the intelligent television, so that the network camera can completely capture images in the watching area.

After the smart television acquires the target image, step 403 is executed: and detecting the target image, and stopping outputting the received video signal to the display if the target device is detected to exist in the target image.

When the intelligent television detects the target image, whether the target equipment exists in the target image can be determined by extracting the characteristic information of the target image. In implementation, common target detection algorithms such as sliding window target detection, one Stage, and Two Stage can be adopted to detect whether a target device exists in a target image. And if the target equipment is detected to exist in the target image, controlling the display to stop playing the current content.

In some possible embodiments, the smart television may be configured to acquire the target image every preset time after the screen recording prevention function is turned on, and detect whether the target device exists in the target image. Therefore, the video content played at present can be effectively prevented from being stolen by the recorded screen.

In addition, the technical scheme provided by the application is also suitable for the application scene of video call. Since most of the common smart tvs in the market have a video call function, the smart tvs are still exemplified as the display device 200. In a video call scene, when the smart television carries out video with an opposite terminal device of the video call, a video frame image sent by the opposite terminal device is received, and the video frame image is output to a display for displaying. Therefore, the display flow of the smart television to the video content in the video call scene is not different from the aforementioned viewing flow. Therefore, the smart television can relieve the situation that the user information is stolen due to illegal recording of the video pictures by executing the steps 401 to 403.

When the method is implemented, a prompt box for prompting a user to start the screen recording prevention function can be provided on a video call starting interface of the smart television. After the user confirms that the screen recording prevention function is started, the smart television starts the screen recording prevention function in response to the starting indication of the screen recording prevention function. Specifically, as shown in fig. 4f, the user sets a prompt box whether to start the screen recording prevention function in the interface for selecting the video call through the smart television, and after the user confirms that the screen recording prevention function is started, the smart television establishes the video call with the opposite terminal device. After receiving a video frame image transmitted by opposite-end equipment of a video call, the intelligent television takes the video frame image as a target image and detects whether the target equipment exists in the video frame image.

In order to be suitable for more application scenes, the intelligent television can be set to automatically switch the video call into the voice call after detecting that the target equipment exists in the video frame image sent by the opposite-end equipment of the video call, so that other participants of the video call can be informed of the fact that the target equipment which is probably recording the screen is detected at present.

Furthermore, in order to be suitable for more application scenes, an option of whether to synchronize the local terminal or not can be added in a prompt box with a screen recording prevention function. If the user selects the synchronous home terminal, whether the target equipment exists in the area of the opposite terminal equipment of the video call is detected through the process, and meanwhile, whether the target equipment exists in the area of the home terminal is detected by starting a camera of the smart television to collect a target image. Therefore, video frame images sent by the opposite terminal equipment can be prevented from being recorded, and screen recording prevention protection is provided for both video parties in the video call process.

Because the target detection algorithm cannot accurately detect whether the target equipment is recording, after the intelligent television starts the screen recording prevention function, for example, when a damaged mobile phone exists in a target image in the process of viewing, a screen recording prevention mechanism is triggered to control the display to stop playing the current content. For example, if an un-started digital camera is detected in the video frame image of the opposite terminal in the video call process, a screen recording prevention mechanism is triggered to stop the current video call.

In order to solve the problems, after the anti-recording mechanism is triggered, the smart television outputs the target image of the target device to a display for display after the target image of the target device is highlighted in the target image. In implementation, as shown in fig. 4g, after the screen recording prevention mechanism is triggered, the intelligent television labels and amplifies the detected target device in the target image and outputs the target image to the display, so that the user can confirm whether the target device is recording the screen.

Further, a selection control for indicating that the video signal is output to the display again can be synchronously generated, and the selection control is synchronously output to the display for showing while the target image of the target equipment exists. Specifically, as shown in fig. 4h, the smart tv may set specific display content of the selection control according to the currently executed function, and if the user is watching the movie through the smart tv, the content of the selection control may be set to be whether to continue watching the movie. If the user is in a video call through the smart television, the content of the selection control can be set to be whether to continue the video call.

In order to facilitate understanding of how to effectively alleviate the situation that user information is stolen due to illegal recording of a video picture in a video call scene, an embodiment of the present application further provides a flowchart of executing a screen recording prevention function of a smart television in the scene, and as shown in fig. 5 specifically, the flowchart includes:

step 501: and establishing video connection with the opposite terminal equipment.

Step 502: and detecting whether the target equipment exists in the received video frame image.

Step 503: and detecting whether target equipment exists in the video frame image acquired by the local terminal.

Step 504: and stopping sending the local video frame image to the opposite terminal equipment. If the target device is detected in

step

502 or 503, it indicates that there is a possibility that the video call is recorded, and at this time, step 504 needs to be immediately executed to prevent the video call from being recorded.

Step 505: and converting the current video call into a voice call. Since the video call is interrupted when step 504 is executed, the video call can be converted into a voice call through step 504 to inform the video participant of the reason for interrupting the video call.

Step 506: and outputting the target equipment to a display for display after the target equipment is highlighted in the video frame image, so that a user can determine whether the target equipment is recording a screen or not.

Step 507: a selection control is output to the display for the user to determine whether to continue the video call. After determining whether the target device is recording the screen, the user can determine whether to continue the video call according to the selection control.

Through the process, after the target equipment which is possible to record the screen is detected by the intelligent television, the current video content is immediately stopped to be played, and the position of the target equipment is informed to the user. And after the user confirms whether the detected target equipment is recording the screen or not, selecting whether to continue the video call or not according to the actual situation. Therefore, the situation that the user information is stolen due to the fact that the video picture is illegally recorded is relieved.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable image scaling apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable image scaling apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable image scaling apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable image scaling device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer implemented process such that the instructions which execute on the computer or other programmable device provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for preventing screen recording, comprising:

2. The method according to claim 1, wherein if the video playing indication is a video call indication, the acquiring the target image acquired by the image acquisition device comprises:

3. The method of claim 1, wherein if the video playing indication indicates that an audio/video file is played, the obtaining of the target image acquired by the image acquisition device comprises:

4. The method according to any of claims 1-3, wherein after said stopping outputting the received video signal to the display, the method further comprises:

generating a selection control for indicating to output the video signal to the display again, and outputting the selection control to the display for showing;

the method further comprises the following steps:

5. The method of claim 4, further comprising:

6. A display device, comprising: display, image collector and controller, wherein:

the display is used for displaying information;

the image collector is used for collecting images;

7. The display device according to claim 6, wherein if the video playing indication is a video call indication, the acquiring of the target image acquired by the image acquisition apparatus is performed, and the controller is configured to:

after executing the indication responsive to the enablement of the anti-screen-capture function, the controller is further configured to:

8. The display device according to claim 6, wherein if the video playing indication indicates that an audio/video file is played, the acquiring of the target image acquired by the image acquisition apparatus is performed, and the controller is configured to:

9. The display device according to any one of claims 6 to 8, wherein after performing the stopping of the output of the received video signal to the display, the controller is further configured to:

the controller is further configured to:

10. The display device of claim 9, wherein the controller is further configured to: