WO2022231252A1 - Procédé de détection de flux vidéo et dispositif électronique le prenant en charge - Google Patents

Procédé de détection de flux vidéo et dispositif électronique le prenant en charge Download PDF

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Publication number
WO2022231252A1
WO2022231252A1 PCT/KR2022/005903 KR2022005903W WO2022231252A1 WO 2022231252 A1 WO2022231252 A1 WO 2022231252A1 KR 2022005903 W KR2022005903 W KR 2022005903W WO 2022231252 A1 WO2022231252 A1 WO 2022231252A1
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WIPO (PCT)
Prior art keywords
packet
electronic device
processor
communication
communication circuit
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PCT/KR2022/005903
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English (en)
Korean (ko)
Inventor
김문수
정인식
정기영
길상원
김동욱
박우진
송민규
이선기
최보근
허정륜
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삼성전자 주식회사
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Publication of WO2022231252A1 publication Critical patent/WO2022231252A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43637—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data
    • H04N21/44222—Analytics of user selections, e.g. selection of programs or purchase activity

Definitions

  • Various embodiments of the present document relate to a method of detecting a video stream generated from a neighboring IP camera device and an electronic device supporting the same.
  • An electronic device such as a smartphone or a tablet PC may support wireless communication.
  • the electronic device may perform wireless data communication through a wireless network device (eg, an AP).
  • a wireless network device eg, an AP
  • the electronic device may be connected to an access point (AP) through Wi-Fi communication.
  • AP access point
  • various types of devices may simultaneously perform wireless data communication through a wireless network device.
  • a smartphone, a tablet PC, or an IP camera device may be linked to one AP to transmit/receive wireless data.
  • an IP camera internet protocol camera
  • an IP camera device may be connected to the Internet by wire or wirelessly and may transmit an image to the outside in real time.
  • Various embodiments of the present document may provide an electronic device that detects a surrounding IP camera device by analyzing a data packet transmitted from an IP camera device to a wireless network device through background monitoring.
  • the electronic device includes an antenna for transmitting and receiving wireless signals to and from an external device, a communication circuit connected to the antenna and supporting a first wireless communication method, a display, a memory, and a processor, wherein the processor activates the communication circuit, and the Searches for nearby wireless network devices supporting the first wireless communication method, generates a list, operates the communication circuit in the first mode, and transmits the list between the first external device and the second external device based on the list. obtain a packet, determine whether the packet is a video stream packet based on the size of the packet, and if the packet is the video stream packet, display a user notification on the display.
  • the electronic device may analyze a data packet transmitted from an IP camera device to a wireless network device through background monitoring to detect a nearby IP camera device.
  • the electronic device may perform precise packet analysis through a user notification when it is highly likely that the upload packet is an IP camera device.
  • FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure
  • FIG. 2 is a block diagram of an electronic device according to various embodiments of the present disclosure.
  • FIG. 3 illustrates a video stream detection method according to various embodiments.
  • FIG. 4 shows BM conditions according to various embodiments.
  • FIG 5 illustrates video stream analysis according to various embodiments.
  • FIG. 6 is an exemplary diagram of video stream analysis according to various embodiments.
  • FIG. 7 is an exemplary diagram illustrating a user notification when a video stream is detected through background monitoring according to various embodiments of the present disclosure
  • FIG. 8 illustrates a setting UI related to automatic execution of background monitoring according to various embodiments of the present disclosure.
  • FIG. 9 illustrates additional analysis of a video stream reflecting a user's movement according to various embodiments of the present disclosure
  • FIG. 10 is an exemplary diagram of video stream analysis reflecting a user's movement according to various embodiments of the present disclosure
  • FIG. 11 illustrates a UI of video stream analysis reflecting a user's movement according to various embodiments of the present disclosure.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments of the present disclosure.
  • the electronic device may have various types of devices.
  • Electronic devices include, for example, portable communication devices (eg, smart phones), computer devices (eg, personal digital assistants), tablet PCs (tablet PCs), laptop PCs (desktop PCs, workstations, or servers); It may include at least one of a portable multimedia device (eg, an e-book reader or an MP3 player), a portable medical device (eg, a heart rate, blood sugar, blood pressure, or body temperature monitor), a camera, or a wearable device. (e.g.
  • the electronic device is, for example, a television, a digital video disk (DVD) player, an audio device, an audio accessory.
  • Devices such as speakers, headphones, or headsets
  • refrigerators air conditioners, vacuum cleaners, ovens, microwaves, washing machines, air purifiers, set-top boxes, home automation control panels, security control panels, game consoles, electronic dictionaries, electronic keys, It may include at least one of a camcorder and an electronic picture frame.
  • the electronic device is a navigation device, a global navigation satellite system (GNSS), an event data recorder (EDR) (eg, a black box for a vehicle/vessel/airplane), an automotive infotainment device. (e.g. head-up displays for vehicles), industrial or domestic robots, drones, automated teller machines (ATMs), point of sales (POS) devices, measuring instruments (e.g. water, electricity, or gas metering instruments); Alternatively, it may include at least one of an IoT device (eg, a light bulb, a sprinkler device, a fire alarm, a thermostat, or a street lamp).
  • IoT device eg, a light bulb, a sprinkler device, a fire alarm, a thermostat, or a street lamp.
  • the electronic device is not limited to the above-described devices, and, for example, as in the case of a smart phone equipped with a measurement function of personal biometric information (eg, heart rate or blood sugar), a plurality of electronic devices
  • the functions of the devices may be provided in a complex manner.
  • the term user may refer to a person who uses an electronic device or a device (eg, an artificial intelligence electronic device) using the electronic device.
  • the electronic device 101 communicates with the electronic device 102 through a first network 198 (eg, a short-range wireless communication network), or a second network 199 (eg, a long-distance wireless communication network). network) and communicate with the electronic device 104 or the server 108 .
  • the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • the electronic device 101 includes a processor 120 , a memory 130 , an input device 150 , a sound output device 155 , a display device 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 .
  • at least one of these components eg, the connection terminals 178 ( 1 ( 1 )
  • some of these components eg, the sensor module 176, the camera module 180, or the antenna module 197) may be integrated into one component (eg, the display device 160). .
  • the processor 120 for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in , process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
  • software eg, a program 140
  • the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 .
  • the volatile memory 132 may be stored in , process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
  • the processor 120 is the main processor 121 (eg, a central processing unit or an application processor), or a secondary processor 123 (eg, a graphics processing unit, an image signal processor) that can be operated independently or together with the main processor 121 . , a sensor hub processor, or a communication processor).
  • the main processor 121 e.g, a central processing unit or an application processor
  • a secondary processor 123 e.g, a graphics processing unit, an image signal processor
  • the secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display device 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states.
  • the coprocessor 123 eg, an image signal processor or a communication processor
  • may be implemented as part of another functionally related component eg, the camera module 180 or the communication module 190 ). have.
  • the memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176 ).
  • the data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto.
  • the memory 130 may include a volatile memory 132 or a non-volatile memory 134 .
  • the program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .
  • the input device 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 .
  • the input device 150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).
  • the sound output device 155 may output a sound signal to the outside of the electronic device 101 .
  • the sound output device 155 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes such as multimedia playback or recording playback.
  • the receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.
  • the display device 160 may visually provide information to the outside (eg, a user) of the electronic device 101 .
  • the display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the corresponding device.
  • the display device 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.
  • the audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input device 150 , or an external electronic device (eg, a sound output device 155 ) connected directly or wirelessly with the electronic device 101 .
  • the electronic device 102) eg, a speaker or headphones
  • the electronic device 102 may output a sound.
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do.
  • the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 177 may support one or more specified protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ).
  • the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
  • the connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ).
  • the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).
  • the haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 188 may manage power supplied to the electronic device 101 .
  • the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
  • PMIC power management integrated circuit
  • the battery 189 may supply power to at least one component of the electronic device 101 .
  • battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
  • the communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel.
  • the communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
  • the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module).
  • a wireless communication module 192 eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module
  • GNSS global navigation satellite system
  • wired communication module 194 eg, : It may include a local area network (LAN) communication module, or a power line communication module.
  • a corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
  • a first network 198 eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)
  • a second network 199 eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
  • a telecommunication network
  • the wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 .
  • subscriber information eg, International Mobile Subscriber Identifier (IMSI)
  • IMSI International Mobile Subscriber Identifier
  • the electronic device 101 may be identified or authenticated.
  • the antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device).
  • the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern.
  • the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna.
  • other components eg, a radio frequency integrated circuit (RFIC)
  • RFIC radio frequency integrated circuit
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 .
  • Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 .
  • all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 .
  • the electronic device 101 may perform the function or service itself instead of executing the function or service itself.
  • one or more external electronic devices may be requested to perform at least a part of the function or the service.
  • One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 .
  • the electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request.
  • cloud computing distributed computing, mobile edge computing (MEC), or client-server computing technology may be used.
  • the electronic device may have various types of devices.
  • the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
  • a portable communication device eg, a smart phone
  • a computer device e.g., a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a wearable device e.g., a smart bracelet
  • a home appliance device e.g., a home appliance
  • FIG. 2 is a block diagram of an electronic device according to various embodiments of the present disclosure.
  • an electronic device 201 (eg, the electronic device 101 of FIG. 1 ) includes a processor 210 , a memory 220 , a display 230 , a sensor module 240 , and a communication circuit 250 . and an antenna 260 .
  • FIG. 2 is exemplary, but not limited thereto, focusing on a configuration related to video stream sensing.
  • the electronic device 201 acquires (sniffing) a packet transmitted between a nearby wireless network device (or wireless relay device) 202 and the IP camera device 203, and generates a video stream from the IP camera device 203 You can sense what you are doing.
  • the processor 210 may perform various operations required for the operation of the electronic device 201 .
  • the processor 210 may operate the communication circuit 250 in a designated mode to obtain a packet transmitted between the wireless network device 202 and the IP camera device 203 .
  • the processor 210 may analyze the packet obtained from the communication circuit 250 to determine whether the packet is a video stream packet.
  • the memory 220 may store various information necessary for the operation of the electronic device 201 .
  • the memory 220 may store a list of the wireless network devices 202 detected in the vicinity of the electronic device 201 .
  • the display 230 may display content such as text or images.
  • the display 230 may include the IP camera device 203 around the electronic device 201 . can display the detection result.
  • the sensor module 240 may detect various pieces of information related to the electronic device 201 .
  • the sensor module 240 may be a position sensor, and may obtain position information of the electronic device 201 .
  • the sensor module 240 may include various circuits for acquiring location information of the electronic device 201 .
  • the sensor module 240 may include circuitry such as GPS, Pedometer, or Bluetooth.
  • the communication circuit 250 may process a signal received through the antenna 260 .
  • the communication circuit 250 may process a signal of a designated first wireless communication method (eg, Wi-Fi).
  • the communication circuit 250 may transmit/receive packets of a designated channel (or frequency).
  • the communication circuit 250 may be a WLAN chipset that supports Wi-Fi communication.
  • the communication circuit 250 may operate in one of a plurality of modes.
  • the communication circuit 250 is a WLAN chipset that supports Wi-Fi communication
  • the communication circuit 250 is configured in Station Infrastructure Mode, Access Point infrastructure Mode, Monitor Mode, Ad-Hoc Mode, Wireless Distribution System Mode ( WDS) or Mesh Mode.
  • WDS Wireless Distribution System Mode
  • the Station Infrastructure Mode may be a mode for transmitting and receiving wireless communication data by connecting to a wireless network device (access point; AP).
  • the Access Point Infrastructure Mode may be a mode supporting a hotspot service
  • the Ad-Hoc Mode may be a mode supporting a P2P service.
  • the monitor mode may be a mode in which an electronic device including a wireless network interface controller (WNIC) monitors all traffic received through a wireless channel.
  • the communication circuit 250 may receive an 802.11 MAC frame without connecting to an AP or an Ad-hoc Network.
  • the monitor mode may be a mode for WLAN maintenance/management such as wireless traffic analysis, and may be a mode in which general wireless data communication is impossible. Monitor mode may not check the CRC checksum for the received frame, and an error may occur in the received frame.
  • the communication circuit 250 may receive all radio frames within a reception range for a designated channel.
  • the communication circuit 250 is a wireless network interface controller (WNIC)
  • the WNIC has OSI Layers 1 and 2 and may provide an address allocation system using a MAC address.
  • a WNIC can enable physical access as a network medium.
  • the WNIC can forward all received frames to the upper layer.
  • the network driver may not do networking through the communication circuit 250 .
  • Communication circuitry 250 may forward the received frame to a packet capture mechanism without pushing it onto the network stack.
  • the antenna 260 may transmit/receive signals to and from an external device.
  • the antenna 260 may transmit the received signal to the communication circuit 250 .
  • FIG. 3 illustrates a video stream detection method according to various embodiments.
  • the processor 210 may activate the communication circuit 250 supporting the first wireless communication method (eg, Wi-Fi).
  • the processor 210 may be in a state capable of transmitting and receiving a wireless signal using the first wireless communication method (eg, Wi-Fi) with an external device through the communication circuit 250 and the antenna 260 .
  • the processor 210 may search for a nearby wireless network device (or wireless relay device) (eg, AP) supporting the first wireless communication method (eg, Wi-Fi) (active scan). For example, the processor 210 may broadcast a probe request through the communication circuit 250 and the antenna 260 and receive probe responses from neighboring APs.
  • a nearby wireless network device eg, AP
  • the processor 210 may broadcast a probe request through the communication circuit 250 and the antenna 260 and receive probe responses from neighboring APs.
  • the communication circuit ( 250) when a scan is performed in a communication circuit supporting a second wireless communication method different from the first wireless communication method and probe responses received from neighboring APs are stored in advance, the communication circuit ( 250) may be omitted. Accordingly, current consumption according to the active scan may be reduced.
  • the processor 210 may generate a list of discovered wireless network devices.
  • the list may include a channel, a bandwidth, or a filtering condition using the BSSID of the found AP as a key.
  • the filtering condition may be a condition regarding a frame control field value of an 802.11 MAC header.
  • the processor 210 may sort the list of wireless network devices according to a specified method so as to be preferentially monitored. For example, the processor 210 may generate the list by arranging it in the order of frequency bands. For another example, when the processor 210 can obtain a CU (Channel Utilization) value from the probe response, the processor 210 may generate the list in order of the highest CU channel.
  • CU Channel Utilization
  • the processor 210 may exclude from the list a wireless network device having a history of performing background monitoring before a specified time.
  • the processor 210 may determine whether the first condition regarding the communication state of the communication circuit 250 or the location information of the electronic device 201 is satisfied.
  • the first condition (or background monitoring condition) (hereinafter, BM condition) is not a state in which the communication circuit 250 operates in the Station Infrastructure Mode for performing wireless data communication, and the user of the electronic device 101 does not visit frequently. It may be a condition to be in place (see FIG. 4 ).
  • operation 330 of determining whether the BM condition is satisfied may be performed before operation 310 or operation 320 .
  • the processor 210 may drive the communication circuit 250 in the first mode.
  • the first mode may be a mode for monitoring (or sniffing) packets transmitted between the first external device (eg, an IP camera device) and the second external device (eg, a wireless network device).
  • the first mode may be a Monitor Mode.
  • the processor 210 may drive the communication circuit 250 in the first mode in the background state.
  • the processor 210 may load firmware corresponding to the first mode and re-drive the driver of the communication circuit 250 .
  • the processor 210 may cause the communication circuit 250 to operate in the second mode.
  • the second mode may be a mode in which wireless data communication is possible.
  • the second mode may be a Station Infrastructure Mode.
  • the processor 210 may obtain (sniffing) a packet transmitted between the first external device and the second external device based on the list of wireless network devices generated in operation 320 .
  • the processor 210 may transmit the list to the communication circuit 250 to request to collect all packets (eg, Wi-Fi Packets) of channels included in the list. Alternatively, the processor 210 may transmit a part of the list to the communication circuit 250 so that only filtered packets are received by setting a specific channel, a specific bandwidth, or a specific 802.11 MAC header type. Through this, the processor 210 may reduce the amount of computation and current consumption required for packet analysis.
  • All packets eg, Wi-Fi Packets
  • the processor 210 may transmit a part of the list to the communication circuit 250 so that only filtered packets are received by setting a specific channel, a specific bandwidth, or a specific 802.11 MAC header type. Through this, the processor 210 may reduce the amount of computation and current consumption required for packet analysis.
  • the processor 220 may obtain an upload packet transmitted from the IP camera device 203 to the wireless network device 202 .
  • the processor 210 may obtain an upload packet transmitted to the wireless network device 202 in each channel for a specified time.
  • the communication circuit 250 may monitor only one channel in the first mode.
  • the processor 210 may control the communication circuit 250 to sequentially monitor the channels included in the list.
  • the processor 210 may store a background monitoring history to prevent frequent monitoring of a specific channel.
  • the processor 210 may periodically check the BM condition. When the BM condition is satisfied, the communication circuit 250 may be continuously operated in the first mode. If the BM condition is not satisfied, the processor 210 may cause the communication circuit 250 to stop background monitoring in the first mode and operate in the second mode. For example, when a user uses an Internet browser over a wireless LAN, background monitoring may be stopped.
  • the processor 210 may cause the communication circuit 250 to stop background monitoring in the first mode and operate in the second mode.
  • the processor 210 may determine whether the packet obtained through the communication circuit 250 in the first mode is a video stream packet.
  • the processor 210 may analyze the uplink packet to determine whether the uplink packet is a video stream.
  • the processor 210 may execute a separate program (eg, a suspicious video streaming detector) for analyzing the received packet.
  • the processor 210 may determine whether the corresponding packet is a video stream packet based on at least a part of the frame body size of the uplink packet, the frame control value, and the time interval of the frame (refer to FIGS. 5 and 6 ). ).
  • the processor 210 may display a user notification regarding detection of a nearby IP camera. For example, the processor 210 may output a user notification such as a status bar notification or a pop-up through the display 240 .
  • a video stream analysis may be performed by inducing a user's movement. For example, it is possible to determine whether the IP camera device is photographing a user by analyzing a pattern related to a change in the size of a P frame according to the movement of the electronic device 201 (refer to FIGS. 9 to 11 ).
  • FIG. 4 shows BM conditions according to various embodiments.
  • the processor 210 may determine whether the communication circuit 250 is a main data path of wireless data communication. For example, when the communication circuit 250 is a main data path of wireless data communication, the communication circuit 250 may operate in the Station Infrastructure Mode. In the Station Infrastructure Mode, the communication circuit 250 may connect to a wireless network device (access point; AP) to transmit/receive wireless communication data.
  • AP wireless network device
  • the processor 210 may determine whether the communication circuit 250 is a main data path of wireless data communication based on information provided in the form of an API from the OS.
  • the processor 210 may determine whether the location of the electronic device 210 is a location designated by the user.
  • the processor 210 may obtain location information of the electronic device 210 through the sensor module 240 to determine whether it is a designated place.
  • the processor 210 may determine whether the location of the electronic device 210 is a public location. Information about a place set as a public place may be downloaded from an external server and set.
  • the processor 210 may determine whether the location of the electronic device 210 is a place visited less than (or less than) a specified number of times.
  • the processor 210 determines that the BM condition is satisfied, and operates the communication circuit 250 in the first mode or maintain a state of operating in the first mode.
  • FIG 5 illustrates video stream analysis according to various embodiments.
  • the processor 210 may receive a packet obtained by the communication circuit 250 operating in the first mode.
  • the processor 210 may list the packets according to the sequence of the header (eg, 802.11 MAC header) and extract the maximum size of the packet.
  • the sequence of the header eg, 802.11 MAC header
  • the processor 210 may check whether a header field of each packet is a specified value. For example, the processor 210 may check whether the DS of the header field of the packet is 01 (From AP) or 10 (To AP).
  • the processor 210 may determine whether the packet is a video stream packet by analyzing a size change of the sorted packets.
  • the processor 210 may determine a packet before the n-th packet. They are determined as one video frame and the size of the frame can be stored.
  • FIG. 6 is an exemplary diagram of video stream analysis according to various embodiments.
  • the processor 210 may list packets received through the communication circuit 250 in the first mode according to a sequence.
  • the processor 210 may check the size of each packet and determine the maximum size.
  • the processor 210 when the (n-1)-th packet is the maximum size, the n-th packet is smaller than the maximum size, and the (n+1)-th packet is the maximum packet, the processor 210 is configured to move before the n-th packet. packets of can be determined as one video frame. For example, when the 1113 packet before the 1114 packet is the maximum size and the 1115 packet is the maximum size, the processor 210 may determine the 1112 to 1114 packets as the first frame 610 .
  • the processor 210 the (n-1)-th packet is the maximum size, the n-th packet is smaller than the maximum size, the (n+1)-th packet is not the maximum size, and thereafter, the maximum size
  • packets before the n-th packet may be determined as one video frame.
  • the processor 210 may determine the 1115 packet and the 1116 packet as the second frame 620 . In this case, packets 1117 and 1118 may not be counted as frames.
  • the processor 210 may determine the 1119 to 1121 packets as the third frame 630 . In this case, 1122 packets may not be counted as frames.
  • the processor 210 may calculate a video frame excluding an upper outlier estimated as an I-frame.
  • the processor 210 determines that the average size of the calculated frames 610 , 620 , and 630 exceeds a specified size (eg, 1500 bytes), and the number of frames exceeds a specified number (eg, 5 seconds) for a predetermined time. If more than 30) exist (6 per second), it can be determined that the video stream exists.
  • a specified size eg, 1500 bytes
  • a specified number eg, 5 seconds
  • FIG. 7 is an exemplary diagram illustrating a user notification when a video stream is detected through background monitoring according to various embodiments of the present disclosure
  • the processor 210 may display a user notification 701 .
  • the processor 210 may output the user notification 701 in the form of a message output from an application related to video stream detection.
  • the user notification 701 may include a guide message 711 , a video stream additional analysis button 712 , and a detailed information display button 713 .
  • Guidance message 711 may include a notification of the possibility that an IP camera in the vicinity is photographing you (eg, "A suspicious IP camera device may be photographing you in the vicinity. would you like to analyze further?")
  • the processor 210 may initiate a process of precisely analyzing the video stream by inducing a user's movement (refer to FIG. 9 ).
  • the processor 210 may display the additional information window 702 including the IP camera device information and channel information detected as a video stream.
  • the additional information window 702 may include a button 721 for the user to select as a trusted IP camera device or a button 722 to further analyze a video stream.
  • FIG. 8 illustrates a setting UI related to automatic execution of background monitoring according to various embodiments of the present disclosure.
  • the processor 210 may display a setting UI 801 including an option 810 regarding whether to automatically execute background monitoring. Execution of background monitoring may be activated or deactivated by user input.
  • the communication circuit 250 When the communication circuit 250 is operated in the first mode for background monitoring, the communication circuit 250 may not be able to use the main data path of wireless network communication.
  • background monitoring can increase system load and increase current consumption.
  • the user can use the detection function of the IP camera device by activating background monitoring, or can reduce battery consumption by disabling background monitoring.
  • a process of precisely analyzing a video stream may be started in response to a separate user input.
  • 9 illustrates additional analysis of a video stream reflecting a user's movement according to various embodiments of the present disclosure; 9 is exemplary and not limited thereto.
  • the processor 210 may detect whether there is an IP camera device photographing the user by measuring a change in the body size of the P-Frame when the user is in a stationary state and when the user is moving.
  • P-Frame is a frame that conveys only the difference between the previous still image and the current still image, and can be mainly used in compressed images.
  • the body size of the P-Frame may be relatively small, and when the user moves, the body size of the P-Frame may be relatively large.
  • the processor 210 may output a user notification according to the background monitoring (eg, the user notification 701 of FIG. 7 ).
  • the processor 210 may determine whether a user input for starting an additional video stream analysis process is generated.
  • the processor 210 may determine whether a user input occurs to the video stream additional analysis buttons 712 and 722 of FIG. 7 .
  • the processor 210 extracts a P-Frame (Predicted Frame) from the received packet in a stopped state, and an average value of the body size of the P-Frame (hereinafter, the first output) can be determined.
  • a P-Frame Predicted Frame
  • the processor 210 may induce the user to move within the first range.
  • the processor 210 may output a guide message to induce the user to move within a relatively small range.
  • the processor 210 extracts a P-Frame (Predicted Frame), and an average value of the body size of the P-Frame (hereinafter referred to as the P-Frame). , the second calculated value) may be determined.
  • a P-Frame Predicted Frame
  • the P-Frame an average value of the body size of the P-Frame
  • the processor 210 may determine a reference value using the first calculated value and the second calculated value.
  • the processor 210 may induce the user to move within a second range larger than the first range.
  • the processor 210 may output a guide message to induce the user to move within a relatively large range.
  • a P-Frame (Predicted Frame) is extracted from a packet received while the user moves in the second range (second movement state), and a body size (hereinafter, a third calculated value) of the P-Frame is determined.
  • the processor 210 may determine that the IP camera device is capturing the user and display a user notification.
  • FIG. 10 is an exemplary diagram of video stream analysis reflecting a user's movement according to various embodiments of the present disclosure
  • the processor 210 may determine a first calculated value in a stationary state and determine a second calculated value in a first moving state.
  • the processor 210 may determine the reference value based on the first calculated value and the second calculated value.
  • the reference value may be set to 10000 bytes.
  • the processor 210 may determine the third calculated value in the second moving state.
  • the processor 210 may compare the reference value and the third calculated value. If there is a section 1010 in which the third calculated value 1030 is greater than the reference value, the processor 210 may determine that the IP camera device is photographing the user.
  • 11 illustrates a user interface (UI) of video stream analysis reflecting a user's movement according to various embodiments of the present disclosure. 11 is illustrative and not limited thereto.
  • the processor 210 may induce the user to move within a relatively small first range.
  • the processor 210 may output a guide message to induce the user to move within a relatively small range. Through this, the processor 210 may determine the reference value.
  • the processor 210 may display the recognition result of the user's movement and induce an additional process.
  • the processor 210 may induce the user to move within a relatively large second range.
  • the processor 210 may output a guide message to induce the user to move within a relatively large range. Through this, the processor 210 may calculate the third calculated value and compare it with the reference value.
  • the processor 210 may determine that the IP camera device is photographing the user and display a user notification. For example, the processor 210 may display the address of the detected IP camera device and the channel being used.
  • An electronic device (eg, the electronic device 101 of FIG. 1 , the electronic device 201 of FIG. 2 ) according to various embodiments of the present disclosure includes an antenna for transmitting and receiving wireless signals to and from an external device, and is connected to the antenna and performs a first wireless communication method.
  • Supporting communication circuits eg, the communication module 190 of FIG. 1 , the communication circuit 250 of FIG. 2
  • a display eg, the display device 160 of FIG. 1 , the display 230 of FIG. 2
  • a memory Example: memory 130 of FIG. 1 , memory 220 of FIG. 2
  • a processor eg, processor 120 of FIG. 1 , processor 210 of FIG. 2
  • the processor eg, FIG. 2 ).
  • the processor 120 of FIG. 1 and the processor 210 of FIG. 2) activate the communication circuit (eg, the communication module 190 of FIG. 1, the communication circuit 250 of FIG. 2), and the first wireless communication method Searches for a nearby wireless network device (eg, the wireless network device 202 of FIG. 2) supporting 250)) in the first mode to obtain a packet transmitted between the first external device and the second external device based on the list, and determine whether the packet is a video stream packet based on the size of the packet. and, when the packet is the video stream packet, a user notification may be displayed on the display (eg, the display device 160 of FIG. 1 and the display 230 of FIG. 2 ).
  • the communication circuit eg, the communication module 190 of FIG. 1, the communication circuit 250 of FIG. 2
  • the first wireless communication method Searches for a nearby wireless network device (eg, the wireless network device 202 of FIG. 2) supporting 250)) in the first mode to obtain a packet transmitted between the first external device and the second external device based on the list, and
  • the electronic device (eg, the electronic device 101 of FIG. 1 , the electronic device 201 of FIG. 2 ) includes a sensor module (eg, the sensor module 176 of FIG. 1 ) that obtains location information;
  • the sensor module 240 of FIG. 2 is further included, and the processor (eg, the processor 120 of FIG. 1 , the processor 210 of FIG. 2 ) is the communication circuit (eg, the communication module 190 of FIG. 1 ).
  • the first condition regarding the location information of the electronic device 101 of FIG. 2 and the electronic device 201 of FIG. 2 is checked, and when the first condition is satisfied, the communication circuit (eg, the communication module 190 of FIG. 1 ) ), the communication circuit 250 of FIG. 2 may be operated in the first mode.
  • the communication circuit eg, the communication module 190 of FIG. 1
  • the communication circuit 250 of FIG. 2 may be operated in the first mode.
  • the communication circuit eg, the communication module ( 190) and the communication circuit 250 of FIG. 2 may be operated in the second mode in which wireless network communication is possible.
  • the first condition may include a condition other than a wireless network communication path of the communication circuit (eg, the communication module 190 of FIG. 1 and the communication circuit 250 of FIG. 2 ).
  • the first condition may include a condition in which the location information corresponds to a public place visited by the user less than a specified number of times.
  • the list uses identification information of the wireless network device (eg, the wireless network device 202 of FIG. 2 ) as a key, and the list includes the wireless network device (eg, the wireless network device of FIG. 2 ). at least one of a channel, bandwidth, or filtering condition of (202)).
  • the filtering condition may be a condition regarding a specified field included in the header of the packet.
  • the processor eg, the processor 120 of FIG. 1 , the processor 210 of FIG. 2
  • the processor 210 of FIG. 2 is a wireless network device (eg, the processor 210 of FIG. 2 ) having a history of performing background monitoring on the packet before a specified time.
  • the wireless network device 202 of FIG. 2 may be excluded from the list.
  • the processor eg, the processor 120 of FIG. 1 , the processor 210 of FIG. 2
  • the processor may be configured in the order of frequency bands, or the wireless network device (eg, the wireless network device 202 of FIG. 2 ). ), the list can be sorted based on the channel configuration information included in the response received.
  • the processor (eg, the processor 120 of FIG. 1 , the processor 210 of FIG. 2 ) transmits all or part of the list to the communication circuit (eg, the communication module 190 of FIG. 1 ); may be transmitted to the communication circuit 250 of FIG. 2 .
  • the communication circuit eg, the communication module 190 of FIG. 1
  • the processor (eg, the processor 120 of FIG. 1 , the processor 210 of FIG. 2 ) arranges the packets according to a sequence, calculates the maximum size of the packet, and determines the size of the packet. It can be determined whether the packet is the video stream packet based on the change.
  • second packets smaller than the maximum size are listed after the first packet of the maximum size, and the When the third packet of the maximum size is listed after the second packet, the first packet and the second packet may be determined as one image frame.
  • the processor (eg, the processor 120 of FIG. 1 , the processor 210 of FIG. 2 ) configures an image frame except for packets listed between the second packet and the third packet.
  • the processor may perform packet analysis using a user's movement in response to a user input generated in the user notification. have.
  • the processor may perform the packet analysis by extracting a packet corresponding to a P-Frame from among the packets.
  • the processor may include a stationary state of the user, a movement state of a first range, and a second range greater than the first range.
  • the packet analysis may be performed by collecting the packets in each of the motion states of .
  • the processor calculates a reference value using the frame sizes respectively collected in the stationary state and the moving state of the first range. may be set, and the frame size collected in the motion state of the second range may be compared with the reference value.
  • the method for detecting a video stream is performed by an electronic device (eg, the electronic device 101 of FIG. 1 , the electronic device 201 of FIG. 2 ) and the electronic device supporting the first wireless communication method ( Example: an operation of activating a communication circuit (eg, the communication module 190 of FIG. 1 , the communication circuit 250 of FIG. 2 ) of the electronic device 101 of FIG. 1 and the electronic device 201 of FIG. 2 ); An operation of generating a list by searching for a nearby wireless network device (eg, the wireless network device 202 of FIG. 2 ) supporting the first wireless communication method, the communication circuit (eg, the communication module 190 of FIG. 1 ); operating the communication circuit 250 of FIG.
  • a nearby wireless network device eg, the wireless network device 202 of FIG. 2
  • the communication circuit eg, the communication module 190 of FIG. 1
  • a display eg, the electronic device 101 of FIG. 1 , the electronic device 201 of FIG. 2 : may include an operation of displaying a user notification on the display device 160 of FIG. 1 and the display 230 of FIG. 2 .
  • the operation of acquiring the packet may include a communication state of the communication circuit (eg, the communication module 190 of FIG. 1 , and the communication circuit 250 of FIG. 2 ) or an electronic device (eg, of FIG. 1 ).
  • the method may further include performing packet analysis using a user's movement in response to a user input generated in the user notification.
  • the electronic device may have various types of devices.
  • the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
  • a portable communication device eg, a smart phone
  • a computer device e.g., a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a wearable device e.g., a smart bracelet
  • a home appliance device e.g., a home appliance
  • first, second, or first or second may simply be used to distinguish an element from other elements in question, and may refer elements to other aspects (e.g., importance or order) is not limited. that one (eg first) component is “coupled” or “connected” to another (eg, second) component with or without the terms “functionally” or “communicatively” When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.
  • module may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic block, component, or circuit.
  • a module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 736 or external memory 738) readable by a machine (eg, electronic device 701). may be implemented as software (eg, a program 740) including
  • a processor eg, processor 720
  • a device eg, electronic device 701
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term refers to the case where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.
  • a signal eg, electromagnetic wave
  • the method according to various embodiments disclosed in this document may be provided as included in a computer program product.
  • Computer program products may be traded between sellers and buyers as commodities.
  • the computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly or online between smartphones (eg: smartphones).
  • a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a memory of a relay server.
  • each component eg, a module or a program of the above-described components may include a singular or a plurality of entities.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. , or one or more other operations may be added.

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Abstract

Un dispositif électronique selon un mode de réalisation divulgué dans le présent document peut comprendre : une antenne destinée à transmettre un signal radio à un dispositif externe ou à recevoir un signal radio en provenance de ce dernier ; un circuit de communication connecté à l'antenne et prenant en charge un premier schéma de communication sans fil ; un dispositif d'affichage ; une mémoire ; et un processeur ; le processeur activant le circuit de communication, recherchant un dispositif de réseau sans fil proche prenant en charge le premier schéma de communication sans fil de manière à générer une liste, actionnant le circuit de communication dans un premier mode en vue d'acquérir un paquet transmis entre un premier dispositif externe et un second dispositif externe sur la base de la liste, déterminant, sur la base de la taille du paquet, si le paquet est un paquet de flux vidéo et affichant une notification d'utilisateur sur le dispositif d'affichage si le paquet est un paquet de flux vidéo. Divers autres modes de réalisation identifiés par la description sont également possibles.
PCT/KR2022/005903 2021-04-27 2022-04-26 Procédé de détection de flux vidéo et dispositif électronique le prenant en charge WO2022231252A1 (fr)

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KR20210044595A (ko) * 2019-10-15 2021-04-23 에스케이플래닛 주식회사 몰래 카메라 방지를 위한 서비스 제공 시스템 및 방법, 그리고 이를 위한 서비스 제공 장치 및 컴퓨터 프로그램이 기록된 비휘발성 기록매체

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