WO2022177195A1 - Dispositif électronique et son procédé de commande - Google Patents

Dispositif électronique et son procédé de commande Download PDF

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Publication number
WO2022177195A1
WO2022177195A1 PCT/KR2022/001344 KR2022001344W WO2022177195A1 WO 2022177195 A1 WO2022177195 A1 WO 2022177195A1 KR 2022001344 W KR2022001344 W KR 2022001344W WO 2022177195 A1 WO2022177195 A1 WO 2022177195A1
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WIPO (PCT)
Prior art keywords
link training
electronic device
voltage parameter
link
content data
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PCT/KR2022/001344
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English (en)
Korean (ko)
Inventor
김동준
송영만
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삼성전자주식회사
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Publication of WO2022177195A1 publication Critical patent/WO2022177195A1/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
    • H04N21/436—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
    • H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N20/00—Machine learning
    • 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
    • H04N21/442—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
    • H04N21/442—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
    • H04N21/44227—Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • H04N21/64723—Monitoring of network processes or resources, e.g. monitoring of network load
    • H04N21/6473—Monitoring network processes errors

Definitions

  • the disclosed invention relates to an electronic device capable of transmitting data using a DisplayPort interface and a method for controlling the same.
  • An electronic device such as a computer or smart phone may be connected to a display device (sink device) such as a TV to output content through the sink device.
  • a display device such as a TV
  • Data transmission and reception between the source device and the sink device are performed based on standards compatible with each other.
  • standards that define communication methods between devices include interface standards such as DisplayPort (registered trademark) (DP) and HDMI (registered trademark) (High Definition Multimedia Interface).
  • the DisplayPort interface is an interface established by the Video Electronics Standards Association (VESA), and both internal connections between chips and external connections between products can be digitally connected.
  • VESA Video Electronics Standards Association
  • link training is performed to optimally establish a link between the source device and the sink device. If the link training is successful, content data may be transmitted from the source device to the sink device. However, while content data is being transmitted from the source device to the sink device, a noise signal may be introduced from the outside, and transmission of the content data may fail due to the noise signal.
  • the disclosed invention provides an electronic device capable of preventing repeated content data transmission failure due to a noise signal when content data is transmitted to a display device through a DisplayPort interface, and a method for controlling the same.
  • An electronic device includes a processor; and a DisplayPort interface connectable to an external display device, wherein the processor detects the connection of the external display device, performs link training for establishing a link with the external display device, and is determined in the link training.
  • the content data may be transmitted to the external display device based on the first voltage parameter, and link training may be performed again with the second voltage parameter having a higher level than the first voltage parameter based on the transmission failure of the content data.
  • the electronic device may further include a memory, wherein the processor stores link configuration information including the second voltage parameter in the memory based on the success of the link training using the second voltage parameter. and, in response to the external display device being disconnected from the DisplayPort interface and then reconnected, the link training may be performed using the link setting information.
  • the electronic device further includes a communication module for emitting a wireless communication signal, wherein the processor controls the communication module so that the wireless communication signal is emitted with maximum power before performing the link training, and , the link training may be performed in a state in which the wireless communication signal is emitted with maximum power.
  • the processor may match the timing at which the wireless communication signal is emitted and the timing of the link training.
  • the processor may determine the second voltage parameter to be one level higher than the level of the first voltage parameter, and restart the link training from the determined level of the second voltage parameter.
  • the processor may be configured to stop retrying the link training and determine a final failure of the content data transmission based on the transmission failure of the content data after the success of the link training with the second voltage parameter of the maximum level.
  • the processor may detect a transmission failure of the content data due to a noise signal, and the noise signal may include at least one of a wireless communication signal emitted by an electronic device or an interference signal introduced from an external environment.
  • a method of controlling an electronic device includes detecting a connection of an external display device through a DisplayPort interface; performing link training for establishing a link with the external display device; transmit content data to the external display device based on the first voltage parameter determined in the link training; detecting a transmission failure of the content data; and performing link training again with a second voltage parameter having a higher level than the first voltage parameter.
  • a method of controlling an electronic device includes: on the basis of success of the link training using the second voltage parameter, storing link setting information including the second voltage parameter in a memory; The method may further include performing the link training using the link setting information in response to the external display device being disconnected from the DisplayPort interface and then reconnected.
  • the method of controlling an electronic device further includes emitting a wireless communication signal with maximum power before performing the link training, wherein performing the link training includes: It may include; performing the link training in a state that is emitted.
  • the performing of the link training may include matching a timing at which the wireless communication signal is emitted and a timing of the link training.
  • the re-performing of the link training includes: determining the second voltage parameter to be one level higher than the level of the first voltage parameter; and starting the link training from the determined level of the second voltage parameter.
  • the method of controlling an electronic device may include, based on a transmission failure of the content data after success of the link training with a second voltage parameter of a maximum level, stopping retry of the link training, and transmitting the content data Determining the final failure of; may further include.
  • the detecting of the transmission failure of the content data includes detecting the transmission failure of the content data due to a noise signal, wherein the noise signal is a wireless communication signal emitted by an electronic device or an interference signal introduced from an external environment.
  • the noise signal is a wireless communication signal emitted by an electronic device or an interference signal introduced from an external environment.
  • the disclosed electronic device and the method for controlling the same can prevent repeated failure of content data transmission due to a noise signal when content data is transmitted to a display device through a DisplayPort interface.
  • the disclosed electronic device and its control method reduce or prevent content data transmission failure by performing link training between the electronic device and the display device in a state where the wireless communication signal emitted from the electronic device is set to the maximum power. can do.
  • FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure
  • FIG 3 illustrates a connection between an electronic device and a display device through a DisplayPort cable according to an exemplary embodiment.
  • FIG. 4 is a graph illustrating an effect of a wireless communication signal emitted by an electronic device on a link of a DisplayPort according to an exemplary embodiment.
  • FIG. 5 is a flowchart illustrating a method of transmitting data using a DisplayPort interface.
  • 6 and 7 are flowcharts illustrating a method of controlling an electronic device according to an exemplary embodiment.
  • FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure
  • an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • a first network 198 eg, a short-range wireless communication network
  • a second network 199 e.g., a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, 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 module 150 , a sound output module 155 , a display module 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 terminal 178
  • some of these components are integrated into one component (eg, display module 160 ). can be
  • 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 a main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor).
  • a main processor 121 eg, a central processing unit or an application processor
  • a secondary processor 123 eg, a graphic processing unit, a neural network processing unit
  • NPU neural processing unit
  • an image signal processor e.g., a sensor hub processor, or a communication 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 module 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 auxiliary processor 123 may include a hardware structure specialized for processing an artificial intelligence model.
  • Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108).
  • the learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited
  • the artificial intelligence model may include a plurality of artificial neural network layers.
  • Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example.
  • the artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.
  • the memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176 ) of the electronic device 101 .
  • 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 module 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 module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).
  • the sound output module 155 may output a sound signal to the outside of the electronic device 101 .
  • the sound output module 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 module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 .
  • the display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device.
  • the display module 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 module 150 or an external electronic device (eg, a sound output module 155 ) directly or wirelessly connected to the electronic device 101 .
  • the electronic device 102) eg, a speaker or headphones
  • 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 DisplayPort, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface. .
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • 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, a DisplayPort connector, 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 wireless 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 wireless 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 wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR).
  • NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)).
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC ultra-reliable and low-latency
  • the wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example.
  • a high frequency band eg, mmWave band
  • the wireless communication module 192 uses various techniques for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna.
  • the wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ).
  • the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: Downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) can be supported.
  • a peak data rate eg, 20 Gbps or more
  • loss coverage eg, 164 dB or less
  • U-plane latency for realizing URLLC
  • 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
  • the antenna module 197 may form a mmWave antenna module.
  • the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, underside) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • signal eg commands or data
  • 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 part of the operations performed by the electronic device 101 may be executed by 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 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing.
  • the external electronic device 104 may include an Internet of things (IoT) device.
  • the server 108 may be an intelligent server using machine learning and/or neural networks.
  • the external electronic device 104 or the server 108 may be included in the second network 199 .
  • the electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.
  • 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. It is said 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 used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable 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 136 or external memory 138) readable by a machine (eg, electronic device 101).
  • a storage medium eg, internal memory 136 or external memory 138
  • the processor eg, the processor 120
  • the device eg, the electronic device 101
  • 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 is used in cases 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 in a computer program product (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 through an application store (eg Play StoreTM) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones).
  • a portion of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or 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, and some of the plurality of entities may be separately disposed in other components. have.
  • 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.
  • the link of the DisplayPort interface includes a main link, an auxiliary channel (AUX CH), and a Hot Plug Detect (HPD) line.
  • the main link is a unidirectional channel, which is a high bandwidth, short call time channel and can be used to transmit isochronous streams such as video data and audio.
  • the main link may be referred to as a 'lane' and may consist of two or four data pairs.
  • the auxiliary channel (AUX CH) is a bidirectional channel and can be used for link management and device control.
  • the auxiliary channel (AUX CH) transmits a data signal for establishing or configuring a main link between the electronic device 101 as a source device and the display device 102 as a sink device, or for transmitting the electronic device 102 or the display device 102 . ) can be used to transmit data for controlling
  • the display device 102 is a link policy maker (Link policy maker), stream policy maker (stream policy maker), display identification data (Extended Display Identification Data, EDID) and DisplayPort configuration data (DisplayPort Configuration Data, DPCD) ) may be included.
  • the EDID may include the manufacturer, date of manufacture, identification number, and supported resolution of the display device 102 .
  • the DPCD may include the transmission rate, the number of transmission lanes, the voltage parameter of the transmission signal, the result of link training, and status information of the main link.
  • the voltage parameter of the transmission signal may include voltage swing (Voltage-Swing) and pre-emphasis (Pre-Emphasis).
  • Auxiliary information such as EDID and DPCD stored in the memory of the display device 102 may be transmitted through the auxiliary channel.
  • the auxiliary channel AUX CH may be used for link training for link matching in a connection step between the electronic device 101 and the display device 102 .
  • the electronic device 101 which is the source device, may use the auxiliary channel to check the validity and status of the main link, and may implement modifications to the main link using the auxiliary channel.
  • the auxiliary channel can be used to establish and maintain the main link connection.
  • the HPD line may be used for transmission of a connection signal and a blocking signal by the sink device 102 .
  • the sink device 102 may transmit a Hot Plug Detect Signal (HPD) to the source device 101 .
  • the HPD signal may be a signal requesting link training.
  • 3 illustrates a connection between an electronic device and a display device through a DisplayPort cable according to an exemplary embodiment.
  • 4 is a graph illustrating an effect of a wireless communication signal emitted by an electronic device on a link of a DisplayPort according to an exemplary embodiment.
  • an electronic device 101 may be implemented as a mobile device such as a smartphone, and may include the configuration shown in FIG. 1 .
  • the electronic device 101 is not limited to a smartphone, and may be implemented as various types of devices.
  • the electronic device 101 may be a device such as a foldable smartphone, a rollable smartphone, a tablet, a portable multimedia device, a portable medical device, or a camera.
  • the electronic device 101 may include a DisplayPort interface 177 and a processor 120 . Also, the electronic device 101 may further include a communication module 190 and a memory 130 .
  • the processor 120 may be operatively and/or electrically connected to the DisplayPort interface 177 , the communication module 190 , and the memory 130 .
  • the memory 130 may store various instructions that may be executed by the processor 120 .
  • the instructions stored in the memory 130 may include control commands such as arithmetic operation, logical operation, data movement, and input/output that may be processed by the processor 120 .
  • the display device 102 may have the same configuration as the electronic device 101 .
  • the electronic device 101 may transmit content data to the display device 102 .
  • the display device 102 may output content data including image data, video data, and/or audio data received from the electronic device 101 .
  • the electronic device 101 may transmit the content data to the display device 102 through the cable 300 and simultaneously emit the wireless communication signal 310 .
  • the wireless communication signal 310 communicates with the external electronic device 104 or the server 108 through a separate network (eg, the first network 198 or the second network 199). It may be a signal for The wireless communication signal 310 may be generated by the wireless communication module 192 and may be emitted through the antenna module 197 . The wireless communication signal 310 may be temporarily, periodically, or continuously emitted according to the operation of the electronic device 101 .
  • the wireless communication signal 310 of the electronic device 101 when the wireless communication signal 310 of the electronic device 101 is emitted while content data is transmitted through the cable 300 , the wireless communication signal 310 is coupled to the DisplayPort channel and may act as noise. .
  • a strong wireless communication signal 310 emitted by the electronic device 101 may break synchronization between the electronic device 101 and the display device 102 , and cause link failure, resulting in a failure in transmission of content data. can do it
  • a noise signal introduced from the external electronic device 104 or an external environment may also cause a link failure between the electronic device 101 and the display device 102 .
  • graph 410 is a noise state plot of the DisplayPort link measured in a state in which the electronic device 101 does not emit a wireless communication signal 310
  • graph 420 is graph 420 when the electronic device 101 is not emitting a wireless communication signal 310 .
  • the noise (Vp-p) of the DisplayPort link may be measured as 24.8 mV.
  • the noise (Vp-p) of the DisplayPort link may be measured as 64mV. That is, it can be confirmed that the noise of the DisplayPort link is very large when the wireless communication signal 310 is emitted. Noise due to the wireless communication signal 310 may cause transmission of content data through the DisplayPort interface 177 to fail.
  • FIG. 5 is a flowchart illustrating a method of transmitting data using a DisplayPort interface.
  • the display device 102 transmits an HPD signal (Hot Plug Detect) to the electronic device 101 .
  • Signal can be transmitted (501).
  • link training for optimizing the link between the electronic device 101 and the display device 102 may be performed ( 502 ).
  • the electronic device 101 may request EDID from the display device 102 .
  • the electronic device 101 may request a DPCD, and the display device 102 may transmit the DPCD to the electronic device 101 .
  • the processor 120 of the electronic device 101 may perform link training based on DisplayPort Configuration Data (DPCD) read from the display device 102 .
  • the DPCD may include the transmission rate, the number of transmission lanes, the voltage parameter of the transmission signal, the result of link training, and status information of the main link.
  • the voltage parameter of the transmission signal may include a voltage swing and a pre-emphasis.
  • the electronic device 101 may transmit a link training pattern to the display device 102 based on the voltage parameter included in the DPCD. For example, at the start of link training, the electronic device 101 may transmit the link training pattern with the minimum level of voltage swing (eg, 400mVp-p). The display device 102 may transmit a response signal indicating that the link training pattern has been normally received. When a response signal is received from the display device 102 , the electronic device 101 may determine that link training has been successful.
  • the link training pattern may include a clock recovery pattern and a channel equalization pattern.
  • the electronic device 101 may increase the level of the voltage parameter.
  • the electronic device 101 may increase the level of the voltage swing and/or the level of the pre-emphasis.
  • the level of the voltage parameter may be selected from among a plurality of predetermined levels.
  • the electronic device 101 may perform link training again based on the changed voltage parameter. That is, the electronic device 101 may repeatedly perform link training while increasing the level of the voltage parameter starting from the minimum level of the voltage parameter. For example, the electronic device 101 may increase the voltage swing level of the voltage parameters by one level in the order of 600mVp-p and 800mVp-p. By repeating the link training as described above, an optimal voltage parameter for the electronic device 101 to transmit content data may be determined.
  • the electronic device 101 may establish a link with a voltage parameter determined according to the success of the link training ( 503 ), and transmit content data through the main link ( 504 ).
  • the display device 102 may process and output the received content data.
  • a link failure may occur during transmission of content data ( 505 ). That is, a transmission failure of content data through the main link may occur.
  • the wireless communication signal 310 emitted by the electronic device 101 is coupled to the DisplayPort channel, or when a noise signal is introduced from the external electronic device 104 or the external environment, the content data transmission failure may occur. can occur In this case, the display device 102 as a sink device transmits the HPD signal again to request link training again, and the electronic device 101 performs link training again to establish a link again.
  • the prior art performs link training again without considering the noise signal coupled to the DisplayPort channel. That is, in the prior art, the same link training as previously performed is performed again, and the voltage parameter having the same level as that of the previously set voltage parameter is set again. For example, the level of the voltage swing may be set back to the minimum level of 400 mVp-p. Therefore, in the prior art, when a noise signal is introduced again, link failure occurs again, and content data transmission failure is repeated.
  • the disclosed electronic device and a control method thereof which will be described below, can prevent repeated failure of content data transmission due to a noise signal.
  • 6 and 7 are flowcharts illustrating a method of controlling an electronic device according to an exemplary embodiment.
  • the processor 120 of the electronic device 101 may detect the connection of the external display device 102 through the DisplayPort interface ( 601 ).
  • the external display device 102 transmits an HPD signal
  • the processor 120 of the electronic device 101 may detect the connection of the external display device 102 based on the HPD signal.
  • the processor 120 of the electronic device 101 may control the communication module 190 to emit the wireless communication signal 310 with maximum power before link training is performed (operation 602 ).
  • Emitting the wireless communication signal 310 before the start of link training is to create an environment in which a noise signal is present. By enabling link training to be performed in an environment in which a noise signal exists, it is possible to reduce or prevent content data transmission failure in advance.
  • the processor 120 of the electronic device 101 may match the timing at which the wireless communication signal 310 is emitted and the timing of link training. Since the wireless communication signal 310 may be temporarily or periodically emitted according to the operation of the electronic device 101 , it is necessary to match the timing at which the wireless communication signal 310 is emitted and the timing of link training. However, when the wireless communication signal 310 is continuously emitted, timing adjustment may not be necessary.
  • the electronic device 101 emits the wireless communication signal 310 at maximum power before the start of link training, and may be omitted. This is because a content data transmission failure may occur because a noise signal other than the wireless communication signal 310 emitted by the electronic device 101 is added.
  • the processor 120 of the electronic device 101 may perform link training for establishing a link with the external display device 102 (operation 603). 5 , the electronic device 101 may establish a link through link training.
  • the processor 120 may establish a link with a first voltage parameter determined through link training. For example, the level of the first voltage swing may be determined to be 400mVp-p.
  • the processor 120 of the electronic device 101 may transmit the content data to the external display device 102 based on the first voltage parameter determined in link training ( 604 ). For example, the electronic device 101 may transmit the content data to the external display device 102 at the first voltage swing level determined to be 400 mVp-p.
  • the processor 120 of the electronic device 101 may detect a transmission failure of the content data ( 605 ). Also, the processor 120 may determine whether the content data transmission failure occurs due to a noise signal.
  • the noise signal may include at least one of a wireless communication signal 310 emitted by the electronic device 101 or an interference signal introduced from an external environment.
  • the processor 120 of the electronic device 101 may set a second voltage parameter having a higher level than the first voltage parameter ( 606 ), and perform link training with the second voltage parameter again. can be performed (607).
  • the level of the second voltage parameter may be set to be one level higher than the level of the first voltage parameter.
  • the level of the second voltage swing may be set to 600mVp-p which is higher than the level of the first voltage swing of 400mVp-p. Increasing the level of the voltage parameter increases the output gain, which can reduce link failures due to noise signals.
  • the processor 120 may increase the level of the second voltage parameter ( 609 ) and repeat the link training.
  • the processor 120 of the electronic device 101 may store link setting information including the second voltage parameter in the memory 130 based on the success of link training using the second voltage parameter (608, 610). ). In response to the external display device 102 being disconnected from the DisplayPort interface 177 and then reconnected, the processor 120 of the electronic device 101 may perform link training using the link setting information.
  • the processor 120 of the electronic device 101 may transmit content data to the external display device 102 after successful link training based on the second voltage parameter ( 701 ).
  • the processor 120 of the electronic device 101 may determine whether the current level of the second voltage parameter is the maximum level ( 703 ). .
  • the processor 120 may set the second voltage parameter to a level higher than the current second voltage parameter and perform link training again ( 704 ). However, if the level of the second voltage parameter is the maximum value, the processor 120 may stop retrying the link training and determine the final failure of the content data transmission ( 705 ).
  • the processor 120 stops retrying the link training and determines the final failure of the content data transmission.
  • the processor 120 displays a screen guiding the impossibility of data transmission through the DisplayPort interface, a screen guiding the inability to use the DisplayPort cable 300, or a screen guiding the replacement of the cable 300 .
  • the display module 160 of the electronic device 101 may be controlled.
  • the disclosed electronic device and the method for controlling the same can prevent repeated failure of content data transmission due to a noise signal when content data is transmitted to the display device through the DisplayPort interface.
  • the disclosed electronic device and its control method reduce or prevent content data transmission failure by performing link training between the electronic device and the display device in a state where the wireless communication signal emitted from the electronic device is set to the maximum power. can do.

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Abstract

Selon un mode de réalisation de la présente invention, un dispositif électronique comprend : un processeur ; et une interface de port d'écran pouvant être connectée à un dispositif d'affichage externe, le processeur pouvant détecter une connexion du dispositif d'affichage externe, exécuter un apprentissage de liaison pour établir une liaison avec le dispositif d'affichage externe, transmettre des données de contenu au dispositif d'affichage externe sur la base d'un premier paramètre de tension déterminé dans l'apprentissage de liaison et exécuter un nouvel apprentissage de liaison à l'aide d'un second paramètre de tension dont le niveau est supérieur à celui du premier paramètre de tension, sur la base d'un échec de transmission des données de contenu.
PCT/KR2022/001344 2021-02-17 2022-01-26 Dispositif électronique et son procédé de commande WO2022177195A1 (fr)

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JP6478963B2 (ja) * 2016-11-11 2019-03-06 キヤノン株式会社 表示装置およびその制御方法
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KR102142273B1 (ko) * 2013-12-27 2020-08-07 엘지디스플레이 주식회사 디스플레이포트 및 디스플레이포트의 데이터 전송 방법

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