WO2017111183A1 - Dispositif radioélectrique portable et procédé de réalisation de duplication en temps réel utilisant celui-ci - Google Patents

Dispositif radioélectrique portable et procédé de réalisation de duplication en temps réel utilisant celui-ci Download PDF

Info

Publication number
WO2017111183A1
WO2017111183A1 PCT/KR2015/014040 KR2015014040W WO2017111183A1 WO 2017111183 A1 WO2017111183 A1 WO 2017111183A1 KR 2015014040 W KR2015014040 W KR 2015014040W WO 2017111183 A1 WO2017111183 A1 WO 2017111183A1
Authority
WO
WIPO (PCT)
Prior art keywords
streaming
source device
sink
communication interface
data
Prior art date
Application number
PCT/KR2015/014040
Other languages
English (en)
Korean (ko)
Inventor
김용진
임희섭
Original Assignee
모다정보통신 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 모다정보통신 주식회사 filed Critical 모다정보통신 주식회사
Priority to PCT/KR2015/014040 priority Critical patent/WO2017111183A1/fr
Publication of WO2017111183A1 publication Critical patent/WO2017111183A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications

Definitions

  • the present embodiment relates to a portable wireless device and a method for providing real-time mirroring using the same.
  • a technology that enables users to naturally view images viewed on a mobile device on a large screen like a TV is attracting attention.
  • a device that provides an image is called a source device or a master device, and a device that receives an image is called a sink device or a client device.
  • Typical technologies include Daas (Display as a Service), Miracast, Airplay, and Chromecast. These technologies support screen casting or mirroring, which displays the floating screen on the source device as it is on the sink device. In addition, unlike the method of transmitting the entire screen information, these technologies support a method of transmitting the video signal of the content or sending the content file to the remote device by streaming to play it on the remote device. It also supports casting technology that sends Internet address and playback information of content stored online and in the cloud to an HDMI dongle connected to a sink device.
  • the source device has a wireless communication (eg, Wi-fi) function so that the source device can connect with the sink device, and mainly deals with a form in which one source device is connected to one sink device.
  • Wi-fi wireless communication
  • the present embodiment provides a portable wireless device mounted on a source device to provide a wireless networking service using a network resource of the source device and providing a mirroring service for the source device to a plurality of sink devices, and a method of providing the same.
  • the purpose is to.
  • a wired communication interface capable of wired communication with a source device;
  • a wireless communication interface capable of wirelessly communicating with sink devices located nearby;
  • a data transmission / reception module configured to receive screen data and sound data of the source device through the wired communication interface;
  • a device management module that controls connection with sink devices through the wireless communication interface and manages connection information of connected sink devices;
  • a signal processing module for generating streaming data by encoding the screen data and the sound data received from the source device into a preset format;
  • a streaming transmission module for managing a streaming service provided to each sink device; And providing a wireless networking service to sink devices connected through the wireless communication interface using network resources of the source device, and multicasting the streaming data to sink devices based on a control command of the streaming transmission module.
  • a proxy module for streaming in a fashion.
  • Embodiments of the portable wireless device may further include one or more of the following features.
  • the portable wireless device further comprises a mode management module for managing an operating mode in which the portable wireless device operates, wherein the operating mode is a first that simultaneously provides a wireless networking service and the streaming service. Mode, and a second mode providing only the streaming service.
  • the mode management module determines the operation mode based on at least one of a user's setting, a source device's property, or a sink device's property.
  • the streaming transmission module in the first mode, performs an interactive procedure for the real-time streaming service with each sink device connected to the wireless communication interface, and the interactive procedure is successfully performed. Control the proxy module to provide the streaming data only to sink devices.
  • the streaming transmission module in the second mode, all sink devices connected to the wireless communication interface without an interactive procedure for a real time streaming service with each sink device connected to the wireless communication interface. Control the proxy module to send the streaming data to the client.
  • the mode management module receives a control command for the operation mode from either the source device or the sink devices, and determines the operation mode according to the received control command.
  • the mode management module determines whether the source device is communicatively connected to a network, and determines the operation mode according to the determination result.
  • the portable wireless device is powered using power delivered from the source device via the wired interface.
  • the wireless communication Obtaining information about sink devices connected through an interface; Receiving screen data and sound data from the source device; Generating streaming data by encoding screen data and sound data received from the source device in a preset format; Providing a wireless networking service to sink devices connected through the wireless communication interface using network resources of the source device; Receiving screen data and sound data from the source device, encoding the received screen data and sound data into a preset format, and streaming the streaming data to the sink devices in a multicast manner.
  • a method of operating a wireless device is provided.
  • the wired communication interface capable of wired communication with the source device;
  • a wireless communication interface capable of wirelessly communicating with sink devices located nearby;
  • a portable wireless device including a controller for generating data and real-time streaming the generated streaming data in a multicasting manner.
  • the portable wireless device may provide a networking service to a plurality of sink devices by using network resources of a source device, and may display screen data and voice data received from the source device. It is possible to provide a mirroring service for the source device to the real-time streaming in a multicasting manner.
  • FIG. 1 is a diagram illustrating a mirroring system according to an embodiment of the present invention.
  • FIG. 2 is a block diagram schematically illustrating a configuration of a portable wireless device according to an embodiment of the present invention.
  • FIG. 3 is a flowchart illustrating a method of operating a portable wireless device according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a method of operating a portable wireless device in AP / streaming mixed mode according to one embodiment of the invention.
  • FIG. 5 is a flowchart illustrating a method of operating a portable wireless device in a multicast-only mode according to an embodiment of the present invention.
  • FIG. 1 is a diagram illustrating a mirroring system according to an embodiment of the present invention.
  • the mirroring system may allow a source device 100, a portable access point 200, and a plurality of sink devices 300a and 300b to communicate with each other. Are connected and built.
  • the source device 100 is connected to communicate with the network.
  • the source device 100 is also connected to communicate with the portable wireless device 200.
  • the network may be formed according to various wired and wireless communication network standards such as LAN, Wireless LAN, LTE, and WiBro.
  • the portable wireless device 200 is a portable device such as a USB dongle, and is connected to the source device 100 through, for example, a USB interface, and indirectly connected to a network through the source device 100.
  • the portable wireless device 200 is connected to communicate with the sink devices 300a and 300b wirelessly.
  • the portable wireless device 200 provides an open Wi-Fi AP function by utilizing the network resources of the source device 100. Accordingly, the portable wireless device 200 uses a network to which the source device 100 is connected as a backbone network of the sink devices 300a and 300b. In addition, the portable wireless device 200 receives screen data and sound data being displayed on the source device 100 from the source device 100 and transmits the screen data and sound data to the plurality of sink devices 300a and 300b. Streams screen data and sound data in real time. That is, the portable wireless device 200 provides a real time streaming service for the source device 100 to the plurality of sink devices 300a and 300b.
  • the portable wireless device 200 may operate in an AP / streaming mixed mode or a streaming only mode based on a user's setting or attributes of the source device 100 or the sink devices 300a and 300b.
  • the portable wireless device 200 may stream audio data or video data received from the source device 100 to the sink devices 300a and 300b connected in a wireless communication in real time.
  • portable wireless device 200 provides wireless networking services (ie, AP functionality) to sink devices 300a and 300b using a wireless communication interface.
  • the portable wireless device 200 provides the sink devices 300a and 300b with a mirroring service for the source device 100 that performs real-time streaming of screen data and sound data of the source device 100.
  • the mirroring system according to the present invention does not transmit or stream the content itself owned or reproduced by the source device 100 to the sink devices 300a and 300b, but the displayed screen data and the reproduced sound data of the source device 100. Note that it transmits.
  • the portable wireless device 200 according to the present invention is connected to the source device 100 instead of the sink devices 300a and 300b, and connects a multimedia device such as a TV not equipped with a Wifi function to the source device 100. It is not used to do that.
  • Such a mirroring system is particularly useful in a situation in which it is necessary to share a screen and sound played in one multimedia device with a plurality of multimedia devices.
  • a portable wireless device when a portable wireless device is mounted on a TV, the TV serves as a source device. While watching a TV located in the living room, the user may continue to watch the TV screen by using another multimedia device that may serve as a sink device located in a study or a bathroom.
  • a presenter's laptop may be equipped with a portable wireless device, even if the meeting venue does not have facilities to display meeting materials (eg documents, video, etc.) such as large monitors or projectors.
  • the notebook acts as a source device. In this case, other attendees can play the same data on their laptop or mobile phone as the meeting material played on the presenter's laptop.
  • FIG. 2 is a block diagram schematically illustrating a configuration of a portable wireless device according to an embodiment of the present invention.
  • the portable wireless device 200 includes a USB interface 210, a wireless communication interface 220, and a controller 230.
  • the USB interface 210 is connected to a source device in a USB manner to provide a communication interface between the portable wireless device 200 and the source device.
  • the USB interface 210 is connected to the source device via a cable.
  • the portable wireless device 200 is implemented to insert the USB terminal of the USB interface 210 directly into the USB socket of the source device.
  • the portable wireless device 200 is driven using power delivered from the source device via the USB interface 210.
  • the portable wireless device 200 may be configured to have a charging circuit (not shown) and to charge a rechargeable battery (not shown) using an external power source.
  • the USB interface 210 may be implemented with an HDMI interface.
  • the wireless communication interface 220 is connected to communicate with the sink devices wirelessly.
  • the wireless communication interface 220 may be implemented according to various wireless communication standards such as WLAN (WiFi), WPAN, Bluetooth, HSDPA, Wibro, and the like.
  • the controller 230 utilizes network resources of the source device connected through the USB interface 210 to open the Wi-Fi AP function (ie, wireless networking service) to sink devices connected through the wireless communication interface 220. To provide. That is, the controller 230 uses the network to which the source device is connected as the backbone network of the sink devices. In addition, the controller 230 receives the screen data being displayed on the source device and the sound data being played back from the source device through the USB interface 210, and transmits the screen data and sound data of the source device to the plurality of sink devices. Stream live.
  • Wi-Fi AP function ie, wireless networking service
  • the controller 230 may include a data transmission / reception module 231, a device management module 232, a signal processing module 233, a streaming transmission module 234, and a proxy module. module 235, and a mode management module 236.
  • the data transmission / reception module 231 requests screen data and sound data from a source device connected through the USB interface 210 and receives screen data and sound data from the source device.
  • the device management module 232 controls connection of sink devices recognized through the wireless communication interface 220 and manages connection information such as MAC address and IP address of the connected sink devices.
  • the signal processing module 233 encodes the screen data and the sound data received from the source device corresponding to the sink device requesting the real-time streaming service.
  • the source device may compress or code the screen displayed on the monitor and the sound output from the speaker to be transmitted to the portable wireless device 200, in which case the signal processing module 233 may decode the received data. After that, it may be encoded in a specific format corresponding to the sink device.
  • the signal processing module 233 may include a voice signal processing module (not shown) and an image signal processing module (not shown) for processing screen data and sound data, respectively.
  • the streaming transmission module 234 manages a streaming service provided to each sink device. For example, control is performed on starting, stopping, and ending a streaming service, and determining a target device to provide a service.
  • the streaming transmission module 234 performs an interactive procedure for the real time streaming service with each sink device connected to the wireless communication interface 220, and the sink device for which the interactive procedure has been successfully performed.
  • the proxy module 235 to provide streaming data only to them.
  • the streaming transmission module 234 may determine whether to provide a real time streaming service in response to each streaming service request received from the sink devices. For example, the streaming transmission module 234 may determine whether to approve each streaming service request in consideration of the number of sink devices using a streaming service, a data transmission rate, and the like.
  • the request message for requesting the streaming service may include data about a port not being used by the sink device or a port designated by the user of the sink device.
  • the streaming transmission module 234 opens a User Datagram Protocol (UDP) socket to a port included in the request message.
  • Messages eg, streaming stop request, termination request, etc.
  • Messages generated in the process of providing a streaming service are transmitted through a socket.
  • the streaming transmission module 234 transmits the streaming data to all the sink devices connected to the wireless communication interface 220 without an interactive procedure for the real time streaming service with each sink device.
  • Control module 235 the streaming transmission module 234 may perform an interactive procedure for the real-time streaming service with each sink device even in the streaming only mode.
  • the proxy module 235 performs a relay function (ie, a wireless networking service) that allows sink devices connecting through the wireless communication interface 220 to indirectly access the network of the source device through the portable wireless device 200. do.
  • the proxy module 235 performs a streaming service provided to the plurality of sink devices according to a control command transmitted from the streaming transmission module 234.
  • the proxy module 235 stores the streaming data delivered from the streaming transmission module 234 in a cache and distributes the multicast method to a plurality of sink devices that are the targets of the streaming service.
  • the proxy module 235 provides only a streaming service or a wireless networking service according to a streaming only mode or an AP / streaming mixed mode, and simultaneously provides a streaming service.
  • the mode management module 236 manages a mode in which the portable wireless device 200 operates (ie, an AP / streaming mixed mode or a streaming only mode) based on a user's setting or a property of a source device or a sink device.
  • the user may set the mode of the portable wireless device 200 through an application installed on the source device or the sink device, and the mode management module 236 may adjust the mode setting according to the user input from the source device or the sink device. According to the instructions, the operating mode of the portable wireless device 200 can be determined.
  • the mode management module 236 determines whether the source device is communicatively connected to the network, and operates in the AP / streaming mixed mode or the streaming only mode according to the determination result. That is, if it is determined that the source device is not communicatively connected to the network, the mode management module 236 sets the streaming only mode, while if it is determined that the source device is communicatively connected to the network, the mode management module ( 236 sets to the AP / streaming mixed mode.
  • the mode management module 236 operates according to the nature of the sink device (eg, whether it has other communication capabilities, such as LTE, LAN, or whether other networking services are required while using the streaming service). Determine the mode to do.
  • FIG. 3 is a flowchart illustrating a method of operating a portable wireless device according to an embodiment of the present invention.
  • the portable wireless device When the portable wireless device is connected to the source device through the USB interface, it is powered on and activates the wireless communication interface (S310).
  • the portable wireless device is connected to one or more sink devices via an activated wireless communication interface.
  • the portable wireless device manages connection information such as MAC addresses and IP addresses of recognized sink devices.
  • the portable wireless device may operate in an AP / streaming mixed mode and a streaming service only mode.
  • the portable wireless device determines whether the current operation mode is a streaming service-only mode (S320), and provides only a real-time streaming service or a real-time streaming service simultaneously with a wireless networking service according to the determination result.
  • the portable wireless device may determine a mode to operate based on the user's setting or the attributes of the source device or the sink device.
  • the portable wireless device In the AP / streaming mixed mode (No in S320), the portable wireless device provides a wireless networking service (ie, AP function) to the sink device using a wireless communication interface (S330). At the same time, the portable wireless device provides the sink device with a mirroring service for the source device, which streams screen data and sound data of the source device in real time. For example, when a request message for requesting a live streaming service is received from one or more sink devices while providing a wireless networking service, the portable wireless device multicasts the received data while receiving screen data and sound data from the source device. Live streaming in a (Muiticast) method (S340 ⁇ S350).
  • a wireless networking service ie, AP function
  • the portable wireless device provides the sink device with a mirroring service for the source device, which streams screen data and sound data of the source device in real time. For example, when a request message for requesting a live streaming service is received from one or more sink devices while providing a wireless networking service, the portable wireless device multicasts
  • the portable wireless device In the streaming service only mode (YES in S320), the portable wireless device does not provide a wireless networking service (ie, an AP function), but provides only a real time streaming service (S350).
  • a wireless networking service ie, an AP function
  • S350 real time streaming service
  • FIG. 4 is a flowchart illustrating a method of operating a portable wireless device in AP / streaming mixed mode according to one embodiment of the invention.
  • the portable wireless device provides a wireless networking service (ie AP function) to one or more sink devices using a wireless communication interface.
  • the portable wireless device provides a mirroring service for the source device to the sink device requesting the streaming service in real time streaming the screen data and the sound data of the source device.
  • the portable wireless device When the portable wireless device requests a network IP address from the sink device, the portable wireless device configures a wireless network such as assigning a network IP address to the sink device and provides wireless networking service to the sink device. That is, the portable wireless device performs an open AP function by using the network resource of the source device.
  • the sink device When receiving a request message for requesting a streaming service from the sink device while providing the wireless networking service, the sink device responds with a success or failure to the multicast request.
  • the portable wireless device requests real time screen data and sound data from the source device, encodes data received from the source device with a predefined codec, and transmits the data to the sink device in the form of a streaming media packet.
  • the sink device receiving the streaming plays back the received packets using a media codec through a predetermined application.
  • the streaming transmission to the sink device stops streaming transmission to the terminal when there is a request to stop transmission from the sink device (or when the application of the sink device is terminated).
  • FIG. 5 is a flowchart illustrating a method of operating a portable wireless device in a multicast-only mode according to an embodiment of the present invention.
  • the streaming service is immediately started between the portable wireless device and the sink device without an interactive procedure such as a streaming service request and a response thereto.
  • the portable wireless device When the portable wireless device requests a network IP address from the sink device, the portable wireless device establishes a wireless network connection by assigning a network IP address to the sink device. Once the wireless network connection is established, the portable wireless device transmits real-time picture data and sound data received from the source device to the sink device in the form of streaming media packets.
  • Such a transmission scheme is useful when the sink device cannot install a specific application for using the mirroring service, such as a TV, and thus cannot perform an interactive procedure with the portable wireless device.
  • the mobile device does not transmit or receive data for a wireless networking service (i.e., AP function)
  • the sink device does not need to filter (or an application for) streaming media packets from data received from the portable wireless device. Can be used.
  • source device 200 portable wireless device
  • 300a, 300b Sink device 210: USB interface
  • signal processing module 234 streaming transmission module
  • proxy module 236 mode management module

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un dispositif radioélectrique portable et un procédé de duplication qui l'utilise. Le dispositif radioélectrique portable selon un mode de réalisation de la présente invention fournit un service de duplication concernant un dispositif source, lequel fournit un service de réseau à une pluralité de dispositifs de synchronisation en utilisant une ressource de réseau du dispositif source et diffuse en temps réel des données d'écran et des données audio reçues de la part du dispositif source vers la pluralité de dispositifs de synchronisation à la manière d'une multidiffusion.
PCT/KR2015/014040 2015-12-21 2015-12-21 Dispositif radioélectrique portable et procédé de réalisation de duplication en temps réel utilisant celui-ci WO2017111183A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2015/014040 WO2017111183A1 (fr) 2015-12-21 2015-12-21 Dispositif radioélectrique portable et procédé de réalisation de duplication en temps réel utilisant celui-ci

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2015/014040 WO2017111183A1 (fr) 2015-12-21 2015-12-21 Dispositif radioélectrique portable et procédé de réalisation de duplication en temps réel utilisant celui-ci

Publications (1)

Publication Number Publication Date
WO2017111183A1 true WO2017111183A1 (fr) 2017-06-29

Family

ID=59090600

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2015/014040 WO2017111183A1 (fr) 2015-12-21 2015-12-21 Dispositif radioélectrique portable et procédé de réalisation de duplication en temps réel utilisant celui-ci

Country Status (1)

Country Link
WO (1) WO2017111183A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050108181A (ko) * 2004-05-12 2005-11-16 삼성전자주식회사 네트워크를 통하여 ａ／ｖ 컨텐츠를 공유하는 방법, 싱크디바이스, 소오스 디바이스 및 메시지 구조
KR20130135306A (ko) * 2011-02-04 2013-12-10 퀄컴 인코포레이티드 이미지들을 디스플레이하기 위한 무선 소스와 싱크 디바이스 간의 데이터 교환
US20140280829A1 (en) * 2013-03-15 2014-09-18 Enterasys Networks, Inc. Device and related method for dynamic traffic mirroring
EP2843919A1 (fr) * 2013-09-02 2015-03-04 Samsung Electronics Co., Ltd Procédé et appareil de fourniture de service par l'utilisation de miroitage d'écran
US20150249714A1 (en) * 2014-02-28 2015-09-03 Samsung Electronics Co., Ltd. Method and apparatus for displaying application data in wireless communication system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050108181A (ko) * 2004-05-12 2005-11-16 삼성전자주식회사 네트워크를 통하여 ａ／ｖ 컨텐츠를 공유하는 방법, 싱크디바이스, 소오스 디바이스 및 메시지 구조
KR20130135306A (ko) * 2011-02-04 2013-12-10 퀄컴 인코포레이티드 이미지들을 디스플레이하기 위한 무선 소스와 싱크 디바이스 간의 데이터 교환
US20140280829A1 (en) * 2013-03-15 2014-09-18 Enterasys Networks, Inc. Device and related method for dynamic traffic mirroring
EP2843919A1 (fr) * 2013-09-02 2015-03-04 Samsung Electronics Co., Ltd Procédé et appareil de fourniture de service par l'utilisation de miroitage d'écran
US20150249714A1 (en) * 2014-02-28 2015-09-03 Samsung Electronics Co., Ltd. Method and apparatus for displaying application data in wireless communication system

Similar Documents

Publication Publication Date Title
WO2012115385A2 (fr) Appareil et procédé de fourniture d'un service prêt à l'emploi universel basé sur une connexion directe wi-fi dans un terminal portable
RU2665288C2 (ru) Беспроводная стыковка множества пользователей
US8300079B2 (en) Apparatus and method for transferring video
WO2014204193A1 (fr) Procédé et appareil de maîtrise du contenu partagé entre dispositifs dans un système de communications sans fil
WO2021164352A1 (fr) Procédé de gestion de données de diffusion en direct de réseau et dispositif associé
JP6347107B2 (ja) 通信管理システム、通信制御システム、通信システム、中継装置、通信方法、及びプログラム
WO2018184266A1 (fr) Procédé, dispositif et système de communication dans une chaîne de diffusion en direct
US8880098B2 (en) Communication server and session control method
WO2013094895A1 (fr) Procédé et appareil de traitement de messages
US9521366B2 (en) Method and apparatus for playing conference signal, video conference terminal, and mobile device
WO2014038796A1 (fr) Procédé et dispositif pour relayer des données de contenu multimédia dont des informations sur des sections sont fournies par l'intermédiaire d'informations de liste
WO2014088379A1 (fr) Procédé et système destinés à la transmission en continu de contenus multimédias dans un réseau wifi
CN103338346A (zh) 一种实现多媒体数字会议的方法及系统
WO2012068940A1 (fr) Procédé de surveillance d'un terminal via un réseau ip et un mcu
CN102948116A (zh) 用于将内容发送到多个装置的方法和设备
KR101727310B1 (ko) 다방향성 크로스캐스팅 방송 시스템 및 방법
US9013537B2 (en) Method, device, and network systems for controlling multiple auxiliary streams
CN104580983A (zh) 一种实现视频通讯ptt功能的方法
WO2013022316A1 (fr) Appareil et procédé fournissant un service de diffusion en continu
WO2017111183A1 (fr) Dispositif radioélectrique portable et procédé de réalisation de duplication en temps réel utilisant celui-ci
US10122896B2 (en) System and method of managing transmission of data between two devices
KR101476281B1 (ko) N-스크린 서비스를 위한 멀티미디어 스트림의 이기종 디바이스 간 핸드오버 시스템 및 그 방법
JP6562118B2 (ja) 通信システム及び通信端末
CN118259820A (en) Method for starting whiteboard drawing and related device
KR20180000579A (ko) 오디오 전송 기능이 있는 유무선 공유기, 그 유무선 공유기를 이용한 오디오 전송 네트워크 시스템 그리고 유무선 공유기를 이용한 오디오 전송 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15911443

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 22/10/2018)

122 Ep: pct application non-entry in european phase

Ref document number: 15911443

Country of ref document: EP

Kind code of ref document: A1