WO2016108263A1 - 情報処理装置および情報処理方法 - Google Patents
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- WO2016108263A1 WO2016108263A1 PCT/JP2015/079499 JP2015079499W WO2016108263A1 WO 2016108263 A1 WO2016108263 A1 WO 2016108263A1 JP 2015079499 W JP2015079499 W JP 2015079499W WO 2016108263 A1 WO2016108263 A1 WO 2016108263A1
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- processing apparatus
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- control unit
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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 or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43637—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/44—Program or device authentication
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
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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
-
- 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
- H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
-
- 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, rendering scenes according to MPEG-4 scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
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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]
- H04N21/60—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
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
Definitions
- This technology relates to an information processing apparatus. Specifically, the present invention relates to an information processing apparatus and an information processing method that handle information related to wireless communication.
- various types of information can be exchanged between the two information processing apparatuses using wireless communication without being connected by a wired line.
- the already connected information processing device is a relay device that transfers image data exchanged between the newly connected information processing device and another already connected information processing device. It can be assumed to be a role.
- any of the information processing apparatuses Assume a case of being disconnected.
- the relay device serves as the information processing device on the reception side or the information processing device on the transmission side.
- This technology was created in view of such a situation, and aims to appropriately connect information processing apparatuses.
- the present technology has been made to solve the above-described problems.
- the first aspect of the present technology includes a communication unit that performs image transmission with the first information processing device using wireless communication, and the above-described technology.
- the first information processing apparatus is temporarily stopped and then the second information processing apparatus
- An information processing apparatus including a control unit that performs authentication processing between the information processing method, an information processing method thereof, and a program that causes a computer to execute the method. Accordingly, when a second information processing device having a role different from that of the first information processing device is newly connected, after the first information processing device is temporarily stopped, an authentication process is performed with the second information processing device. The effect of performing.
- the communication unit performs real-time image transmission with the first information processing apparatus in accordance with Wi-Fi (Wireless Fidelity), CERTIFIED Miracast specifications (technical specification name: Wi-Fi Display).
- the control unit may perform an HDCP re-authentication process with each of the first information processing apparatus and the second information processing apparatus after temporarily suspending the first information processing apparatus. Accordingly, after the first information processing apparatus is temporarily stopped, the HDCP re-authentication process is performed between each of the first information processing apparatus and the second information processing apparatus.
- control unit is configured such that when the role of the first information processing device is a transmitter and the role of the information processing device is a receiver when performing the image transmission,
- the role of the information processing apparatus is changed to a relay device by the connection of the second information processing apparatus, the image transmission from the first information processing apparatus is temporarily stopped and then the second information processing apparatus.
- the authentication process may be performed, and image transmission from the first information processing apparatus may be resumed after the authentication process.
- the authentication process is performed with the second information processing apparatus, and the image transmission from the first information processing apparatus is resumed after the authentication process. Bring about an effect.
- the control unit performs re-authentication processing with the first information processing device after temporarily stopping image transmission from the first information processing device, and performs the re-authentication processing.
- the authentication process may be performed with the second information processing apparatus.
- the role of the first information processing device is a receiver and the role of the information processing device is a transmitter when the image transmission is performed
- the image transmission to the first information processing apparatus is temporarily stopped and then the second information processing apparatus.
- the authentication process may be performed, and image transmission to the first information processing apparatus may be resumed after the authentication process.
- the authentication process is performed with the second information processing apparatus, and the image transmission to the first information processing apparatus is resumed after the authentication process. Bring.
- control unit holds the Revocation information held at the start of the wireless connection with the first information processing apparatus before performing the authentication process with the second information processing apparatus. May be transmitted to the second information processing apparatus. Thereby, before performing the authentication process with the second information processing apparatus, the Revocation information held at the start of the wireless connection with the first information processing apparatus is transmitted to the second information processing apparatus. .
- the information processing apparatus may be a dual role device of Wi-Fi (Wireless Fidelity) CERTIFIED Miracast specification. This brings about the effect that the connection process is performed by the Dual Role Device of the Wi-Fi CERTIFIED Miracast specification.
- Wi-Fi Wireless Fidelity
- the 2nd side surface of this technique cut disconnects the communication part which relays the image transmission from the 1st information processing apparatus using a wireless communication to the 2nd information processing apparatus, and the said 2nd information processing apparatus.
- re-authentication processing is performed with the first information processing apparatus, and image transmission from the first information processing apparatus is resumed after the re-authentication processing.
- An information processing apparatus including the processing unit, an information processing method thereof, and a program for causing a computer to execute the method.
- the connection with the second information processing apparatus is disconnected, the first information processing apparatus is temporarily stopped and then the re-authentication process is performed with the first information processing apparatus. This brings about the effect that the image transmission from the information processing apparatus is resumed.
- control unit may perform a disconnection process with the second information processing apparatus after temporarily stopping the first information processing apparatus. This brings about the effect
- the connection between the first information processing apparatus and the communication unit that relays image transmission from the first information processing apparatus to the second information processing apparatus using wireless communication is disconnected.
- the information processing apparatus includes a control unit that outputs notification information indicating that the connection with the first information processing apparatus is disconnected from at least one of the own apparatus and the second information processing apparatus, and the information A processing method and a program for causing a computer to execute the method.
- control unit may cause the output to be performed by displaying the notification information or outputting a voice of the notification information. This brings about the effect that the notification information is output by the display of the notification information or the sound output of the notification information.
- 14 is a flowchart illustrating an example of a processing procedure of connection processing by the information processing apparatus 100 according to the embodiment of the present technology. It is a flowchart which shows an example of the process sequence of the cutting process by the information processing apparatus 100 in embodiment of this technique.
- It is a block diagram which shows an example of a schematic structure of a smart phone. It is a block diagram which shows an example of a schematic structure of a car navigation apparatus.
- FIG. 1 is a block diagram illustrating a functional configuration example of the information processing apparatus 100 according to the embodiment of the present technology.
- the information processing apparatus 100 includes a communication unit 110, a control unit 120, a storage unit 130, an operation reception unit 140, and an information output unit 150.
- the information processing apparatus 100 is an information processing apparatus or electronic device having a wireless communication function.
- the information processing apparatus 100 is an information processing apparatus (for example, a personal computer or a video viewing apparatus (for example, a television)) or a portable information processing apparatus (for example, a smartphone or a tablet terminal) having a wireless communication function.
- the communication unit 110 is a module (for example, a wireless local area network (LAN) modem) for transmitting and receiving radio waves via an antenna (not shown).
- the communication unit 110 can perform wireless communication using a wireless LAN communication method.
- the communication unit 110 includes IEEE (Institute of Electrical and Electronics Electronics) 802.11, IEEE 802.15, IEEE 802.16, 3GPP (3rd Generation Partnership Project) specifications (for example, W-CDMA (Wideband Code Division Multiple Access), Wireless communication can be performed by a communication system compliant with GSM (registered trademark) (Global System for Mobile Communications), WiMAX (Worldwide Interoperability for Microwave Access), WiMAX2, LTE (Long Term Evolution, LTE-A (Advanced)) it can.
- GSM Global System for Mobile Communications
- WiMAX Worldwide Interoperability for Microwave Access
- WiMAX2 Long Term Evolution
- LTE-A Advanced
- the communication part 110 can exchange various information using a wireless communication function.
- wireless communication using a wireless LAN can be performed between the devices.
- Wi-Fi Wireless Fidelity
- TDLS Transmission Link Setup
- ad hoc network ad hoc network
- mesh network ad hoc network
- Wi-Fi CERTIFIED Miracast technical specification: Wi-Fi Display
- Wi-Fi CERTIFIED Miracast uses Wi-Fi Direct and TDLS technologies to transmit audio and display images that are played back on one terminal to other terminals, and the other terminals can transmit the audio, This is a mirroring technology that outputs image data.
- Wi-Fi CERTIFIED Miracast realizes UIBC (User Input Back Channel) on TCP / IP (Transmission Control Protocol / Internet Protocol).
- UIBC is a technique for transmitting operation information of an input device such as a mouse or a keyboard from one terminal to the other terminal.
- other remote desktop software for example, VNC (Virtual Network Computing) may be applied.
- the communication unit 110 can perform real-time image transmission with other information processing apparatuses in accordance with the Wi-Fi CERTIFIED Miracast specification. Further, the communication unit 110 can relay image transmission from the first information processing apparatus to the second information processing apparatus in accordance with the Wi-Fi CERTIFIED Miracast specification.
- the control unit 120 controls each unit of the information processing apparatus 100 based on a control program stored in the storage unit 130.
- the control unit 120 is realized by, for example, a CPU (Central Processing Unit).
- the control unit 120 performs signal processing of transmitted / received information.
- the control unit 120 performs connection processing, authentication processing, and disconnection processing with other information processing apparatuses.
- the storage unit 130 is a memory that stores various types of information.
- the storage unit 130 stores various information (for example, a control program) necessary for the information processing apparatus 100 to perform a desired operation.
- the storage unit 130 includes a buffer used when the information processing apparatus 100 transmits and receives data.
- the operation accepting unit 140 is an operation accepting unit that accepts an operation input made by a user, and outputs operation information corresponding to the accepted operation input to the control unit 120.
- the operation reception unit 140 receives a connection instruction operation to the network and a disconnection instruction operation from the network.
- the operation reception unit 140 is realized by, for example, a touch panel, a keyboard, a mouse, and a sensor (for example, a touch interface).
- the information output unit 150 is an output unit that outputs various types of information based on the control of the control unit 120.
- a display unit for example, an organic EL (Electro Luminescence) panel or an LCD (Liquid Crystal Display) panel
- an audio output unit for example, a microphone
- the information output unit 150 for example, both a display unit and an audio output unit can be used.
- the operation receiving unit 140 and the information output unit 150 can be integrally configured using a touch panel that allows a user to input an operation by touching or approaching the finger with the display surface.
- the information processing apparatus 100 can be connected to other information processing apparatuses via Wi-Fi Direct. Further, the information processing apparatus 100 can perform image communication with other information processing apparatuses using Wi-Fi CERTIFIED Miracast.
- the information processing apparatus 100 when the information processing apparatus 100 is Wi-Fi Direct connected, the information processing apparatus 100 can detect a new connection of another information processing apparatus. Similarly, when the information processing apparatus 100 performs image communication using Wi-Fi CERTIFIED Miracast, the information processing apparatus 100 can detect a new connection of another information processing apparatus.
- the information processing apparatus 100 when the information processing apparatus 100 is Wi-Fi Direct connected, the information processing apparatus 100 can detect disconnection of another information processing apparatus. Similarly, when the information processing apparatus 100 performs image communication using Wi-Fi CERTIFIED Miracast, the information processing apparatus 100 can detect disconnection of another information processing apparatus.
- FIG. 2 is a block diagram illustrating a functional configuration example of the communication unit according to the embodiment of the present technology. This communication unit corresponds to the communication unit 110 and the control unit 120 shown in FIG.
- FIG. 2a shows an example of the communication unit 160 of the source device of WFD (Wi-Fi Direct).
- the communication unit 160 includes an RTSP (Real-Time Streaming Protocol) server 161, an RTP (Real-time Transport Protocol) server 162, an HDCP (High-bandwidth Digital Content Protection System) TX163, and an NIC (Network Interface Card) 164. Prepare.
- RTSP Real-Time Streaming Protocol
- RTP Real-time Transport Protocol
- HDCP High-bandwidth Digital Content Protection System
- TX163 High-bandwidth Digital Content Protection System
- NIC Network Interface Card
- FIG. 2b shows an example of the communication unit 170 of the WFD Dual Role device (Dual Role device).
- the communication unit 170 includes an RTSP server 171, an RTP server 172, an HDCP RX / TX Repeater 173, an RTSP client 174, an RTP client 175, and a NIC 176.
- the Dual Role device is an information processing device that can be both a Wi-Fi CERTIFIED Miracast sink device and a source device.
- FIG. 2c shows an example of the communication unit 180 of the WFD sink device.
- the communication unit 180 includes an RTSP client 181, an RTP client 182, an HDCP RX 183, and a NIC 184.
- FIG. 3 is a format example of Revocation information exchanged between information processing apparatuses constituting the communication system according to the embodiment of the present technology.
- Revocation information is a list (Revocation List) managed by an upstream device (source device), and is a list for monitoring whether an encryption key for encrypting a stream is leaked to a third party.
- Revocation List a list managed by an upstream device (source device)
- source device a list for monitoring whether an encryption key for encrypting a stream is leaked to a third party.
- the reception side in the case of performing image data communication will be described as the rear (or downstream side), and the transmission side will be described as the front (or upstream side).
- Revocation information is recorded in association with, for example, Number of Devices 191 and Device IDs 192.
- “Number of Devices 191” is identification information for identifying each device.
- Device IDs 192 is an ID (identification) related to each device.
- HDCP DRM Digital Rights Management
- devices are classified into three classes of TX (Transmitter: transmitter), RX (Reciver: receiver), and Repeater, and a transmission path for transmitting content is protected.
- TX means a device (transmitter) that does not have a digital external input and transmits a stream digitally.
- RX means a device (receiver) that has no digital external output and digitally receives a stream.
- Repeater means a device (relay device) that has a digital external input and a digital external output and relays the stream digitally.
- TX encrypts a stream to be transmitted to RX.
- RX also decrypts the stream received from TX (the stream encrypted by TX).
- the Repeater decrypts the stream received from TX (the stream encrypted by TX), then encrypts the decrypted stream again and transmits it to the RX.
- the RX decrypts the stream received from the Repeater (a stream encrypted by the Repeater).
- RX transmits the above-mentioned Revocation information to TX.
- the Repeater when a Repeater exists between RX and TX, the Repeater relays RX Revocation information and transmits it to TX.
- Wi-Fi CERTIFIED Miracast protects the transmission path using HDCP.
- a sink and a source there are only two classes, a sink and a source, and there is no class corresponding to Repeater.
- Each device can be a device (Dual Role device) that can also serve as a sink and a source.
- Each sink device and source device can be connected to this dual role device. For this reason, in Wi-Fi CERTIFIED Miracast, a sink device and a source device can be connected via a dual role device.
- any device is disconnected from devices (sink device and source device) that perform communication by Wi-Fi CERTIFIED Miracast. Also in this case, it is assumed that the role of the device on the side where the device is disconnected (transmitting side or receiving side) is changed. In this case, the role in HDCP is also changed. For example, in HDCP, a case where the repeater is changed to TX or a case where the repeater is changed to RX is assumed.
- HDCP re-authentication when the role of a device is changed in HDCP, HDCP re-authentication is required.
- HDCP re-authentication it is necessary to disconnect the RTSP TCP connection and the lower layer Wi-Fi Direct L2 connection.
- image disturbance or black images during the HDCP re-authentication.
- the display at the time of cutting becomes difficult to see, and that a black image is generated at the time of cutting.
- FIG. 4 is a diagram illustrating a system configuration example of the communication system according to the embodiment of the present technology.
- Information processing apparatuses 201 to 203 configuring the communication system illustrated in FIG. 4 correspond to the information processing apparatus 100 illustrated in FIG.
- the role (TX, RX, Repeater) in HDCP of each information processing device is shown below the rectangle representing the information processing devices 201 to 203.
- the role (source device, sink device, dual role device) in Wi-Fi CERTIFIED Miracast is shown in parentheses below the role. 7, 10, and 13, similarly, the role of each information processing device in HDCP and the role in Wi-Fi CERTIFIED Miracast are shown below the rectangle representing each information processing device.
- FIG. 4 shows a transition example when the role of the first RX is changed to Repeater when RX is added after RX.
- FIG. 4 a shows an example in which a stream is transmitted from the information processing apparatus (TX) 201 to the information processing apparatus (RX) 202 by Wi-Fi CERTIFIED Miracast.
- FIG. 4 b shows an example in which an information processing device (RX) 203 is further added after the information processing device (RX) 202 in the state shown in FIG.
- RX information processing device
- FIG. 4C illustrates an example in which a stream is transmitted by Wi-Fi CERTIFIED Miracast from the information processing device (TX) 201 to the information processing device (RX) 203 via the information processing device (Repeator) 202. Show.
- the information processing apparatus 202 can display an image based on the stream from the information processing apparatus 201. It is.
- the information processing device 201 can be an imaging device (for example, a digital video camera), the information processing device 202 can be a tablet terminal, and the information processing device 203 can be a smartphone.
- a captured image generated by the imaging device (information processing device 201) is first transmitted to the tablet terminal (information processing device 202) and displayed.
- a smartphone (information processing device 203) can be added to and connected to the tablet terminal (information processing device 202) and displayed on the smartphone (information processing device 203).
- the captured image generated by the imaging device (information processing device 201) can be displayed on both the tablet terminal (information processing device 202) and the smartphone (information processing device 203).
- FIG. 5 and FIG. 6 are sequence charts illustrating an example of communication processing between devices included in the communication system according to the embodiment of the present technology. That is, FIG. 5 and FIG. 6 show communication examples when the role of the first RX is changed to Repeater when RX is further added after RX.
- FIG. 5 shows a comparative example of the communication example shown in FIG.
- Wi-Fi Direct connection processing is performed between the information processing apparatus 201 and the information processing apparatus 202. (301). Subsequently, the M1 message through the M3 message are exchanged between the information processing apparatus 201 and the information processing apparatus 202 (302 through 304). Subsequently, HDCP authentication processing is performed between the information processing apparatus 201 and the information processing apparatus 202 (305). Subsequently, the M4 message to the M7 message are exchanged between the information processing apparatus 201 and the information processing apparatus 202 (306, 307).
- M1 is a message (Query sink options) for inquiring about the option of the sink device.
- M2 is a message (Query source options) for inquiring about the option of the source device.
- M3 is a message (Query sink capabilities) for inquiring about the capability information of the sink device.
- M4 is a message (Set sink parameters) for notifying the sink device of parameters to be set in the sink device.
- M5 is a message indicating “Trigger WFD sink to issue ⁇ SETUP
- M6 is a message indicating "Send SETUP request to WFD source.”
- M7 is a message indicating "Send PLAY request to WFD source. WFD source begins audio and / or video streaming.”
- an information processing device 203 is further added after the information processing device 202.
- a disconnection process is performed between the information processing apparatus 201 and the information processing apparatus 202, and a reconnection process is performed (308).
- a Wi-Fi Direct connection process is performed between the information processing apparatus 202 and the information processing apparatus 203 (315). Further, exchange of M1 message to M7 message (316 to 318, 320, 321) and HDCP re-authentication (319) are performed between the information processing apparatus 202 and the information processing apparatus 203.
- the information processing apparatus 202 whose role is changed to Repeater exchanges M1 to M7 messages (309 to 311, 313, and 314) and HDCP re-authentication (312) with the information processing apparatus 201. Do.
- FIG. 6 shows an example in which Wi-Fi CERTIFIED Miracast Dual Role device performs HDCP re-authentication to switch from RX to Repeater without disconnecting Wi-Fi Direct L2 connection or RTSP TCP connection. .
- each process (331 to 337, 315 to 321) shown in FIG. 6 corresponds to each process (301 to 307, 338 to 348) shown in FIG. For this reason, the description about each of these corresponding processes is omitted.
- the information processing apparatus 202 issues PAUSE to the information processing apparatus 201 before HDCP re-authentication (342). Since the information processing apparatus 201 can be temporarily stopped by issuing this PAUSE, the image can be temporarily stopped. Therefore, it is possible to prevent image disturbance and black image generation at the time of HDCP re-authentication (344).
- the information processing apparatus 202 issues an HDCP Refresh to the information processing apparatus 201 (343). Subsequently, the information processing apparatus 202 performs HDCP re-authentication (Up Stream) with the information processing apparatus 201 (344). Further, the information processing apparatus 202 performs HDCP re-authentication (Down Stream) with the information processing apparatus 203 (346).
- the information processing apparatus 202 issues PLAY to the information processing apparatus 201, thereby setting the information processing apparatus 201 as PLAY (345).
- image data is continuously transmitted from the information processing apparatus 201 after issuing PAUSE to the information processing apparatus 201 (342).
- the image data transmitted in this way is held in the buffer of the information processing apparatus 202.
- the information processing apparatus 202 can flush the buffer at the timing of issuing PLAY to the information processing apparatus 201 (349), and can erase the image data.
- the image data of the section cannot be displayed, but the influence on the user is small because of the relatively short period.
- the information processing apparatus 202 re-establishes the authentication (346) on the downstream side as a Repeater between the information processing apparatus 203 and the information processing apparatus 202. Delay until authentication (344) is over. As a result, it is possible to prevent image disturbance or black image generation when re-authentication (344) on the upstream side (Up Stream) fails. In addition, images and sounds can be output smoothly after re-authentication without disconnecting the Wi-Fi Direct L2 connection or the RTSP TCP connection.
- the control unit of the information processing apparatus 202 performs HDCP re-authentication processing between the information processing apparatus 201 and the information processing apparatus 203 after temporarily suspending the information processing apparatus 201.
- the control unit of the information processing device 202 suspends image transmission from the information processing device 201, and then performs HDCP re-authentication processing with the information processing device 201.
- HDCP re-authentication processing is performed with the information processing apparatus 203.
- the control unit of the information processing device 202 resumes image transmission from the information processing device 201.
- FIG. 7 is a diagram illustrating a system configuration example of the communication system according to the embodiment of the present technology.
- Information processing apparatuses 211 to 213 constituting the communication system illustrated in FIG. 7 correspond to the information processing apparatus 100 illustrated in FIG.
- FIG. 7 shows an example of transition when the role of the first TX is changed to Repeater when TX is further added before TX.
- FIG. 7a shows an example in which a stream is transmitted from the information processing apparatus (TX) 211 to the information processing apparatus (RX) 212 by Wi-Fi CERTIFIED Miracast.
- FIG. 7b shows an example in which an information processing device (TX) 213 is further added before the information processing device (TX) 211 in the state shown in FIG. 7a.
- TX information processing device
- FIG. 7c illustrates an example in which a stream is transmitted by Wi-Fi CERTIFIED Miracast from the information processing device (TX) 213 to the information processing device (RX) 212 via the information processing device (Repeator) 211. Show.
- the information processing device 211 transmits a stream to the information processing device 212 to display an image.
- the information processing apparatus 212 can simultaneously display an image based on the stream from the information processing apparatus 213 and an image based on the stream from the information processing apparatus 211 on the display unit.
- the information processing apparatus 212 can simultaneously display an image from the information processing apparatus 213 and an image from the information processing apparatus 211 on two screens.
- the information processing device 211 can be a tablet terminal with a camera
- the information processing device 212 can be a tablet terminal
- the information processing device 213 can be an imaging device (for example, a digital video camera).
- a case is assumed where first, a captured image generated by a camera-equipped tablet terminal (information processing apparatus 211) is transmitted and displayed on a tablet terminal (information processing apparatus 212).
- the imaging device (information processing device 213) is added and connected to the camera-equipped tablet terminal (information processing device 211), and detailed images from the imaging device (information processing device 213) are displayed on the tablet terminal (information processing device 212). ) Can be displayed.
- captured images generated by both the tablet terminal with the camera (information processing apparatus 211) and the imaging apparatus (information processing apparatus 213) can be simultaneously displayed on the tablet terminal (information processing apparatus 212).
- FIG. 8 and FIG. 9 are sequence charts illustrating an example of communication processing between devices included in the communication system according to the embodiment of the present technology. That is, FIG. 8 and FIG. 9 show communication examples when the role of the first TX is changed to Repeater when TX is further added before TX.
- FIG. 8 shows a comparative example of the communication example shown in FIG.
- corresponds to each process (301 thru
- Fig. 9 shows an example of performing HDCP re-authentication in order to switch from TX to Repeater without disconnecting Wi-Fi Direct L2 connection or RTSP TCP connection in Wi-Fi CERTIFIED Miracast Dual Role device. .
- each process (381 to 387, 391 to 397) shown in FIG. 9 corresponds to each process (351 to 357, 365 to 371) shown in FIG. For this reason, the description about each of these corresponding processes is omitted.
- the information processing apparatus 211 After the HDCP authentication (385), the information processing apparatus 211 records the Revocation information of the information processing apparatus 212 in the storage unit (corresponding to the storage unit 130 shown in FIG. 1) (388). Further, the information processing apparatus 211 transmits the Revocation information of the information processing apparatus 212 recorded in the storage unit to the information processing apparatus 213 before the HDCP re-authentication (395).
- the Revocation information of the information processing apparatus 212 is recorded. Then, when the information processing device 213 is added, the Revocation information of the information processing device 212 is transmitted to the information processing device 213.
- the information processing apparatus 211 performs Repeater authentication (HDCP re-authentication (Up Stream)) with the information processing apparatus 213 (395), the Repeater authentication (HDCP re-authentication (Down Stream)) is omitted. be able to.
- the information processing apparatus 211 transmits a PAUSE command with Trigger_METHOD to the information processing apparatus 212 before HDCP re-authentication (389, 390).
- the information processing apparatus 212 can be paused, so that the image can be paused. Therefore, it is possible to prevent image disturbance and black image generation during HDCP re-authentication (395).
- the information processing apparatus 211 issues PLAY to the information processing apparatus 212 with Trigger METHOD (399, 400). Thereby, the information processing apparatus 212 can be set to PLAY (399, 400).
- the control unit (corresponding to the control unit 120 illustrated in FIG. 1) of the information processing device 211 newly connects the information processing device 213 having a role different from that of the information processing device 212
- the information processing device After temporarily stopping 212, authentication processing is performed with the information processing apparatus 213.
- the control unit of the information processing device 211 suspends image transmission to the information processing device 212 and then performs HDCP re-authentication processing with the information processing device 213, and the HDCP re-authentication processing is successful. After that, the image transmission to the information processing apparatus 212 is resumed.
- control unit of the information processing device 211 uses the information stored in the information processing device 213 for the Revocation information held at the start of the wireless connection with the information processing device 212 before performing the HDCP re-authentication process with the information processing device 213. To send to.
- FIG. 10 is a diagram illustrating a system configuration example of the communication system according to the embodiment of the present technology.
- Information processing apparatuses 221 to 223 constituting the communication system illustrated in FIG. 10 correspond to the information processing apparatus 100 illustrated in FIG.
- FIG. 10 shows an example of transition when the role of Repeater is changed to RX when RX is disconnected.
- FIG. 10A illustrates an example in which a stream is transmitted by Wi-Fi CERTIFIED Miracast from the information processing device (TX) 221 to the information processing device (RX) 223 via the information processing device (Repeator) 222. Show.
- FIG. 10b shows an example in which the information processing device (RX) 223 is disconnected (for example, TEARDOWN (end processing), wireless disconnection) in the state shown in FIG. 10a.
- the information processing apparatus (RX) 223 is disconnected, the role of the information processing apparatus 222 is changed from Repeater to RX.
- FIG. 10c shows an example in which a stream is transmitted from the information processing device (TX) 221 to the information processing device (RX) 222 by Wi-Fi CERTIFIED Miracast.
- FIG. 11 and FIG. 12 are sequence charts illustrating communication processing examples between devices included in the communication system according to the embodiment of the present technology. That is, FIG. 11 and FIG. 12 show communication examples when the role of Repeater is changed to RX when RX is disconnected.
- FIG. 11 shows a comparative example of the communication example shown in FIG.
- or 408) shown in FIG. 11 respond
- the information processing apparatus 222 transmits PAUSE to the information processing apparatus 221 when disconnecting the information processing apparatus 223 (401).
- the information processing apparatus 222 performs Wi-Fi Direct disconnection processing with the information processing apparatus 223 (409).
- FIG. 12 shows an example in which Wi-Fi CERTIFIED Miracast Dual Role device performs HDCP re-authentication to switch from Repeater to RX without disconnecting Wi-Fi Direct L2 connection or RTSP TCP connection. .
- the information processing apparatus 222 issues a PAUSE command to the information processing apparatus 221 before HDCP re-authentication (412). By issuing this PAUSE command, it is possible to prevent image disturbance and occurrence of a black image.
- the information processing apparatus 222 performs HDCP re-authentication with the information processing apparatus 221 (412). Subsequently, the information processing apparatus 222 issues a PLAY command to the information processing apparatus 221 after HDCP re-authentication (412) (413).
- the control unit of the information processing device 222 (corresponding to the control unit 120 illustrated in FIG. 1) temporarily stops the information processing device 221 when the connection with the information processing device 223 is disconnected. Then, the control unit of the information processing device 222 performs HDCP re-authentication processing with the information processing device 221, and resumes image transmission from the information processing device 221 after the HDCP re-authentication processing is successful. In addition, the control unit of the information processing device 222 performs a disconnection process with the information processing device 223 after temporarily stopping the information processing device 221.
- FIG. 13 is a diagram illustrating a system configuration example of a communication system according to an embodiment of the present technology.
- Information processing apparatuses 231 to 233 constituting the communication system illustrated in FIG. 13 correspond to the information processing apparatus 100 illustrated in FIG.
- FIG. 13 shows a transition example when the role of Repeater is changed to TX when TX is disconnected.
- FIG. 13 a shows an example in which a stream is transmitted by Wi-Fi CERTIFIED Miracast from the information processing device (TX) 231 to the information processing device (RX) 233 via the information processing device (Repeator) 232. Show.
- FIG. 13 b shows an example in which the information processing apparatus (TX) 231 is disconnected (for example, TEARDOWN, wireless disconnection) in the state shown in FIG.
- TX information processing apparatus
- FIG. 13c shows an example in which a stream is transmitted from the information processing device (TX) 232 to the information processing device (RX) 233 by Wi-Fi CERTIFIED Miracast.
- FIG. 14 and FIG. 15 are sequence charts illustrating an example of communication processing between devices included in the communication system according to the embodiment of the present technology. That is, FIG. 14 and FIG. 15 show communication examples when the role of Repeater is changed to TX when TX is disconnected.
- FIG. 14 shows a comparative example of the communication example shown in FIG.
- each process (422 to 428) shown in FIG. 14 corresponds to each process (358 to 364) shown in FIG. For this reason, the description about each of these corresponding processes is omitted.
- the information processing apparatus 232 performs Wi-Fi Direct disconnection processing with the information processing apparatus 231 (421).
- FIG. 12 shows an example in which the HDCP re-authentication is omitted and the streaming is continued.
- the information processing apparatus 232 After the Wi-Fi Direct disconnection process with the information processing apparatus 231 (431), the information processing apparatus 232 outputs notification information for notifying the user that the TX (information processing apparatus 231) has been disconnected (432). ). For example, the information processing device 232 displays a notification screen (for example, an input switching screen or a warning screen) for notifying the user that TX (information processing device 231) is disconnected on the display unit (432). Further, for example, the information processing device 232 causes a voice output unit to output a message for notifying the user that TX (information processing device 231) has been disconnected (432). This notification information is output when the information processing device 232 detects that the TX (information processing device 231) is disconnected and a black image is displayed on the display unit of the RX (information processing device 233). Alternatively, it may be performed automatically.
- a notification screen for example, an input switching screen or a warning screen
- the information processing device 232 causes a voice output unit to output a message for notifying the user that TX (
- the information processing apparatus 232 omits HDCP re-authentication and continues streaming (433).
- the information processing device 232 can transmit notification information for notifying the user that TX (information processing device 231) has been disconnected in the stream to the information processing device 233 (433).
- the information processing device 232 can transmit the notification information to the information processing device 233 using UIBC or the like (433).
- the control unit of the information processing device 232 disconnects the connection with the information processing device 231, the notification that the connection with the information processing device 231 is disconnected.
- Output information For example, the control unit of the information processing device 232 can output notification information from at least one of the information processing device 232 and the information processing device 233. Further, the control unit of the information processing device 232 can output the notification information by at least one of display of the notification information and voice output of the notification information.
- FIG. 16 is a flowchart illustrating an example of a processing procedure of connection processing by the information processing apparatus 100 according to the embodiment of the present technology.
- FIG. 16 illustrates an example in which the information processing apparatus 100 is a Wi-Fi CERTIFIED Miracast Dual Role device.
- FIG. 16 shows an example in which a new information processing apparatus is added when image data communication is performed using Wi-Fi CERTIFIED Miracast.
- the control unit 120 of the information processing device 100 determines that the newly connected information processing device (second device) has a different role (Wi-Fi CERTIFIED Miracast) from the already connected information processing device (first device). ) Is determined (step S801).
- the role of Wi-Fi CERTIFIED Miracast is a source device or a sink device. Note that step S801 is an example of a determination procedure described in the claims.
- the control unit 120 displays the information processing device (second device). ) Are newly connected (step S802).
- the control unit 120 displays the information processing apparatus (first device). Wi-Fi Direct connection is established between the two devices (step S803).
- the control unit 120 PAUSEs the already connected information processing apparatus (first device) (step S804).
- the already connected information processing apparatus (first device) is a source device
- the information processing apparatus (first device) is issued by issuing PAUSE to the information processing apparatus (first device).
- PAUSE for example, when the information processing apparatus (first device) that is already connected is a sink device, the information processing apparatus (first device) is issued by issuing a Trigger Method PAUSE to the information processing device (first device).
- PAUSE 1 device PAUSE 1 device).
- control unit 120 determines whether or not the new information processing apparatus (second device) is a sink device (step S805). If the new information processing apparatus (second device) is a sink device (step S805), the control unit 120 issues an HDCP Refresh to the already connected information processing apparatus (first device) (step S806). ).
- control unit 120 performs Repeater authentication (HDCP re-authentication) with a new information processing apparatus (second device) and exchanges up to the RTSP M7 message (Step S807).
- the control unit 120 transmits the Revocation information of the information processing device (first device) that is already connected (step S805). Step S808). That is, when performing HDCP authentication with a new information processing apparatus (second device), the control unit 120 transmits the revocation information of the already connected information processing apparatus (first device) (step S808). ).
- control unit 120 performs Repeater authentication (HDCP re-authentication) with a new information processing apparatus (second device) and exchanges up to the RTSP M7 message (Step S809).
- the control unit 120 sets the already connected information processing apparatus (first device) as PLAY (step S810).
- the information processing apparatus (first device) that is already connected is the source device
- the information processing apparatus (first device) is issued by issuing PLAY to the information processing apparatus (first device).
- PLAY For example, when the information processing apparatus (first device) that is already connected is a sink device, the information processing apparatus (first device) is issued by issuing a Trigger Method PLAY to the information processing device (first device). 1 device) is PLAY.
- steps S803 to S810 are an example of a procedure for performing the authentication processing described in the claims.
- FIG. 17 is a flowchart illustrating an example of a processing procedure of a cutting process performed by the information processing apparatus 100 according to the embodiment of the present technology.
- FIG. 17 illustrates an example in which the information processing apparatus 100 is a Wi-Fi CERTIFIED Miracast Dual Role device.
- FIG. 17 shows an example in which the information processing apparatus is disconnected when image data communication is performed by Wi-Fi CERTIFIED Miracast.
- control unit 120 of the information processing apparatus 100 determines whether or not the information processing apparatus to be disconnected is a sink device (step S821).
- the control unit 120 disconnects from the information processing device (source device) (step S821). Subsequently, the control unit 120 outputs notification information for notifying the user that the information processing apparatus (source device) has been disconnected from the information output unit 150 (step S823). For example, the control unit 120 causes the display unit to display a notification screen for notifying the user that the information processing apparatus (source device) has been disconnected (step S823). For example, the control unit 120 transmits notification information for notifying the user that the information processing apparatus (source device) has been disconnected to another connected information processing apparatus (sink device). The user can be notified. For example, the control unit 120 can transmit notification information for notifying the user that the information processing apparatus (source device) has been disconnected to another information processing apparatus (sink device) using streaming. .
- the control unit 120 PAUSEs the information processing device (source device) that is not disconnected (step S824).
- control unit 120 disconnects from the information processing apparatus (sink device) to be disconnected (step S825). Subsequently, the control unit 120 performs HDCP re-authentication with the information processing apparatus (source device) that is not disconnected (step S826).
- control unit 120 sets the information processing device (source device) that is not disconnected as PLAY (step S827). That is, the control unit 120 issues PLAY to an information processing device (source device) that is not disconnected, thereby setting the information processing device (source device) as PLAY.
- Wi-Fi CERTIFIED Miracast Dual Role devices prevent occurrence of image disturbance and black image during topology conversion from TX to Repeater, and speed up the connection time. Can do.
- Wi-Fi CERTIFIED Miracast Dual Role devices can prevent image disturbance and black image generation during topology conversion from RX to Repeater, and speed up the connection time.
- Wi-Fi CERTIFIED Miracast Dual Role devices can prevent image disturbance and black image generation during topology conversion from Repeater to TX, and increase the connection time.
- Wi-Fi CERTIFIED Miracast Dual Role devices can prevent image disturbance during topology conversion from Repeater to RX, and increase the connection time.
- the information processing apparatus 100 is a smartphone, a tablet PC (Personal Computer), a notebook PC, a mobile terminal such as a portable game terminal or a digital camera, a fixed terminal such as a television receiver, a printer, a digital scanner, or a network storage, or You may implement
- the information processing apparatus 100 is a terminal (also referred to as an MTC (Machine Type Communication) terminal) that performs M2M (Machine To Machine) communication, such as a smart meter, a vending machine, a remote monitoring apparatus, or a POS (Point Of Sale) terminal. It may be realized as.
- the information processing apparatus 100 may be a wireless communication module (for example, an integrated circuit module configured by one die) mounted on these terminals.
- FIG. 18 is a block diagram illustrating an example of a schematic configuration of a smartphone 900 to which the technology according to the present disclosure may be applied.
- the smartphone 900 includes a processor 901, a memory 902, a storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 913, an antenna switch 914, an antenna 915, A bus 917, a battery 918, and an auxiliary controller 919 are provided.
- the processor 901 may be, for example, a CPU (Central Processing Unit) or a SoC (System on Chip), and controls the functions of the application layer and other layers of the smartphone 900.
- the memory 902 includes a RAM (Random Access Memory) and a ROM (Read Only Memory), and stores programs and data executed by the processor 901.
- the storage 903 can include a storage medium such as a semiconductor memory or a hard disk.
- the external connection interface 904 is an interface for connecting an external device such as a memory card or a USB (Universal Serial Bus) device to the smartphone 900.
- the camera 906 includes, for example, an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor), and generates a captured image.
- the sensor 907 may include a sensor group such as a positioning sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor.
- the microphone 908 converts sound input to the smartphone 900 into an audio signal.
- the input device 909 includes, for example, a touch sensor that detects a touch on the screen of the display device 910, a keypad, a keyboard, a button, or a switch, and receives an operation or information input from a user.
- the display device 910 has a screen such as a liquid crystal display (LCD) or an organic light emitting diode (OLED) display, and displays an output image of the smartphone 900.
- the speaker 911 converts an audio signal output from the smartphone 900 into audio.
- the wireless communication interface 913 supports one or more wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and performs wireless communication.
- the wireless communication interface 913 can communicate with other devices via a wireless LAN access point in the infrastructure mode.
- the wireless communication interface 913 can directly communicate with other devices in the ad-hoc mode or the direct communication mode such as Wi-Fi Direct.
- Wi-Fi Direct unlike the ad hoc mode, one of two terminals operates as an access point, but communication is performed directly between the terminals.
- the wireless communication interface 913 can typically include a baseband processor, an RF (Radio Frequency) circuit, a power amplifier, and the like.
- the wireless communication interface 913 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated.
- the wireless communication interface 913 may support other types of wireless communication methods such as a short-range wireless communication method, a proximity wireless communication method, or a cellular communication method in addition to the wireless LAN method.
- the antenna switch 914 switches the connection destination of the antenna 915 among a plurality of circuits (for example, circuits for different wireless communication schemes) included in the wireless communication interface 913.
- the antenna 915 includes a single antenna element or a plurality of antenna elements (for example, a plurality of antenna elements constituting a MIMO antenna), and is used for transmission and reception of radio signals by the radio communication interface 913.
- the smartphone 900 is not limited to the example in FIG. 18, and may include a plurality of antennas (for example, an antenna for a wireless LAN and an antenna for a proximity wireless communication method). In that case, the antenna switch 914 may be omitted from the configuration of the smartphone 900.
- the bus 917 connects the processor 901, memory 902, storage 903, external connection interface 904, camera 906, sensor 907, microphone 908, input device 909, display device 910, speaker 911, wireless communication interface 913, and auxiliary controller 919 to each other.
- the battery 918 supplies power to each block of the smartphone 900 illustrated in FIG. 18 through a power supply line partially illustrated by a broken line in the drawing.
- the auxiliary controller 919 operates the minimum necessary functions of the smartphone 900 in the sleep mode.
- control unit 120 described with reference to FIG. 1 may be implemented in the wireless communication interface 913.
- at least a part of these functions may be implemented in the processor 901 or the auxiliary controller 919.
- the smartphone 900 may operate as a wireless access point (software AP) when the processor 901 executes the access point function at the application level. Further, the wireless communication interface 913 may have a wireless access point function.
- FIG. 19 is a block diagram illustrating an example of a schematic configuration of a car navigation device 920 to which the technology according to the present disclosure can be applied.
- the car navigation device 920 includes a processor 921, a memory 922, a GPS (Global Positioning System) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, and wireless communication.
- An interface 933, an antenna switch 934, an antenna 935, and a battery 938 are provided.
- the processor 921 may be a CPU or SoC, for example, and controls the navigation function and other functions of the car navigation device 920.
- the memory 922 includes RAM and ROM, and stores programs and data executed by the processor 921.
- the GPS module 924 measures the position (for example, latitude, longitude, and altitude) of the car navigation device 920 using GPS signals received from GPS satellites.
- the sensor 925 may include a sensor group such as a gyro sensor, a geomagnetic sensor, and an atmospheric pressure sensor.
- the data interface 926 is connected to the in-vehicle network 941 through a terminal (not shown), for example, and acquires data generated on the vehicle side such as vehicle speed data.
- the content player 927 reproduces content stored in a storage medium (for example, CD or DVD) inserted into the storage medium interface 928.
- the input device 929 includes, for example, a touch sensor, a button, or a switch that detects a touch on the screen of the display device 930, and receives an operation or information input from the user.
- the display device 930 has a screen such as an LCD or an OLED display, and displays a navigation function or an image of content to be reproduced.
- the speaker 931 outputs the navigation function or the audio of the content to be played back.
- the wireless communication interface 933 supports one or more wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and executes wireless communication.
- the wireless communication interface 933 can communicate with other devices via a wireless LAN access point in the infrastructure mode.
- the wireless communication interface 933 can directly communicate with other devices in the ad-hoc mode or the direct communication mode such as Wi-Fi Direct.
- the wireless communication interface 933 may typically include a baseband processor, an RF circuit, a power amplifier, and the like.
- the wireless communication interface 933 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated.
- the wireless communication interface 933 may support other types of wireless communication systems such as a short-range wireless communication system, a proximity wireless communication system, or a cellular communication system.
- the antenna switch 934 switches the connection destination of the antenna 935 among a plurality of circuits included in the wireless communication interface 933.
- the antenna 935 includes a single antenna element or a plurality of antenna elements, and is used for transmission and reception of a radio signal by the radio communication interface 933.
- the car navigation device 920 is not limited to the example of FIG. 19 and may include a plurality of antennas. In that case, the antenna switch 934 may be omitted from the configuration of the car navigation device 920.
- the battery 938 supplies power to each block of the car navigation apparatus 920 shown in FIG. 19 through a power supply line partially shown by broken lines in the drawing. Further, the battery 938 stores electric power supplied from the vehicle side.
- control unit 120 described with reference to FIG. 1 may be implemented in the wireless communication interface 933. Further, at least a part of these functions may be implemented in the processor 921.
- the technology according to the present disclosure may be realized as an in-vehicle system (or vehicle) 940 including one or more blocks of the car navigation device 920 described above, an in-vehicle network 941, and a vehicle side module 942.
- vehicle-side module 942 generates vehicle-side data such as vehicle speed, engine speed, or failure information, and outputs the generated data to the in-vehicle network 941.
- the processing procedure described in the above embodiment may be regarded as a method having a series of these procedures, and a program for causing a computer to execute these series of procedures or a recording medium storing the program. You may catch it.
- a recording medium for example, a CD (Compact Disc), an MD (MiniDisc), a DVD (Digital Versatile Disc), a memory card, a Blu-ray disc (Blu-ray (registered trademark) Disc), or the like can be used.
- this technique can also take the following structures.
- a communication unit that performs image transmission with the first information processing apparatus using wireless communication; In the case of newly connecting a second information processing apparatus having a role different from that of the first information processing apparatus in the case of performing the image transmission, the second information processing apparatus is temporarily stopped after the first information processing apparatus is suspended.
- An information processing apparatus comprising a control unit that performs an authentication process with the control unit.
- the communication unit performs real-time image transmission with the first information processing apparatus in accordance with Wi-Fi (Wireless Fidelity) CERTIFIED Miracast specifications,
- the control unit according to (1), wherein the control unit performs an HDCP re-authentication process with each of the first information processing device and the second information processing device after temporarily suspending the first information processing device.
- Information processing device Information processing device.
- the authentication processing is performed with the second information processing device after temporarily stopping image transmission from the first information processing device, and the authentication processing The information processing apparatus according to (1), wherein image transmission from the first information processing apparatus is resumed later.
- the control unit performs re-authentication processing with the first information processing device after temporarily stopping image transmission from the first information processing device, and after the re-authentication processing is successful, the second information The information processing apparatus according to (3), wherein the authentication process is performed with a processing apparatus.
- the control unit is connected by the connection of the second information processing device.
- the authentication processing is performed with the second information processing device after temporarily stopping image transmission to the first information processing device, and the authentication processing The information processing apparatus according to (1), wherein image transmission to the first information processing apparatus is resumed later.
- the control unit Before performing the authentication process with the second information processing apparatus, stores the Revocation information stored at the start of a wireless connection with the first information processing apparatus to the second information processing apparatus.
- the information processing apparatus according to (5), wherein the information is transmitted.
- Wi-Fi Wireless Fidelity
- a communication unit that relays image transmission from the first information processing apparatus to the second information processing apparatus using wireless communication; When disconnecting from the second information processing apparatus, a re-authentication process is performed with the first information processing apparatus after the first information processing apparatus is temporarily stopped, and the first authentication process is performed after the re-authentication process.
- An information processing apparatus comprising: a control unit that resumes image transmission from one information processing apparatus. (9) The information processing apparatus according to (8), wherein the control unit performs a disconnection process with the second information processing apparatus after the first information processing apparatus is temporarily stopped.
- An information processing apparatus comprising a control unit. (11) The information processing apparatus according to (10), wherein the control unit causes the output to be performed by displaying the notification information or outputting a voice of the notification information. (12) When image transmission is performed with the first information processing apparatus using wireless communication, it is determined whether or not the newly connected second information processing apparatus has a role different from that of the first information processing apparatus. Procedure and When the second information processing device has a role different from that of the first information processing device, a procedure for performing an authentication process with the second information processing device after temporarily suspending the first information processing device An information processing method comprising:
Abstract
Description
1.実施の形態(役割が異なる情報処理装置を新たに接続する場合と、情報処理装置を切断する場合の例)
2.応用例
[情報処理装置の構成例]
図1は、本技術の実施の形態における情報処理装置100の機能構成例を示すブロック図である。
図2は、本技術の実施の形態における通信部の機能構成例を示すブロック図である。この通信部は、図1に示す通信部110および制御部120に対応する。
図3は、本技術の実施の形態における通信システムを構成する情報処理装置間でやりとりされるRevocation情報のフォーマット例である。
最初に、RXの後にさらにRXが追加された場合に、最初のRXの役割がRepeaterに変更される場合の例を示す。
図4は、本技術の実施の形態における通信システムのシステム構成例を示す図である。図4に示す通信システムを構成する情報処理装置201乃至203は、図1に示す情報処理装置100に対応する。また、情報処理装置201乃至203を表す矩形の下側には、各情報処理装置のHDCPにおける役割(TX、RX、Repeater)を示す。また、その役割の下側の括弧内には、Wi-Fi CERTIFIED Miracastにおける役割(ソース機器、シンク機器、Dual Role機器)を示す。また、図7、図10、図13においても、同様に、各情報処理装置を表す矩形の下側には、各情報処理装置のHDCPにおける役割と、Wi-Fi CERTIFIED Miracastにおける役割とを示す。
図5および図6は、本技術の実施の形態における通信システムを構成する各装置間における通信処理例を示すシーケンスチャートである。すなわち、図5および図6には、RXの後にさらにRXが追加された場合に、最初のRXの役割がRepeaterに変更される場合の通信例を示す。
次に、TXの前にさらにTXが追加された場合に、最初のTXの役割がRepeaterに変更される場合の例を示す。
図7は、本技術の実施の形態における通信システムのシステム構成例を示す図である。図7に示す通信システムを構成する情報処理装置211乃至213は、図1に示す情報処理装置100に対応する。また、図7には、TXの前にさらにTXが追加された場合に、最初のTXの役割がRepeaterに変更される場合の遷移例を示す。
図8および図9は、本技術の実施の形態における通信システムを構成する各装置間における通信処理例を示すシーケンスチャートである。すなわち、図8および図9には、TXの前にさらにTXが追加された場合に、最初のTXの役割がRepeaterに変更される場合の通信例を示す。
次に、RXが切断された場合に、Repeaterの役割がRXに変更される場合の例を示す。
図10は、本技術の実施の形態における通信システムのシステム構成例を示す図である。図10に示す通信システムを構成する情報処理装置221乃至223は、図1に示す情報処理装置100に対応する。また、図10には、RXが切断された場合に、Repeaterの役割がRXに変更される場合の遷移例を示す。
図11および図12は、本技術の実施の形態における通信システムを構成する各装置間における通信処理例を示すシーケンスチャートである。すなわち、図11および図12には、RXが切断された場合に、Repeaterの役割がRXに変更される場合の通信例を示す。
次に、TXが切断された場合に、Repeaterの役割がTXに変更される場合の例を示す。
図13は、本技術の実施の形態における通信システムのシステム構成例を示す図である。図13に示す通信システムを構成する情報処理装置231乃至233は、図1に示す情報処理装置100に対応する。また、図13には、TXが切断された場合に、Repeaterの役割がTXに変更される場合の遷移例を示す。
図14および図15は、本技術の実施の形態における通信システムを構成する各装置間における通信処理例を示すシーケンスチャートである。すなわち、図14および図15には、TXが切断された場合に、Repeaterの役割がTXに変更される場合の通信例を示す。
次に、情報処理装置の動作例について説明する。
図16は、本技術の実施の形態における情報処理装置100による接続処理の処理手順の一例を示すフローチャートである。図16では、情報処理装置100がWi-Fi CERTIFIED MiracastのDual Role機器である場合の例を示す。また、図16では、Wi-Fi CERTIFIED Miracastによる画像データの通信が行われている場合に新たな情報処理装置を追加する場合の例を示す。
図17は、本技術の実施の形態における情報処理装置100による切断処理の処理手順の一例を示すフローチャートである。図17では、情報処理装置100がWi-Fi CERTIFIED MiracastのDual Role機器である場合の例を示す。また、図17では、Wi-Fi CERTIFIED Miracastによる画像データの通信が行われている場合に情報処理装置を切断する場合の例を示す。
本開示に係る技術は、様々な製品へ応用可能である。例えば、情報処理装置100は、スマートフォン、タブレットPC(Personal Computer)、ノートPC、携帯型ゲーム端末若しくはデジタルカメラなどのモバイル端末、テレビジョン受像機、プリンタ、デジタルスキャナ若しくはネットワークストレージなどの固定端末、又はカーナビゲーション装置などの車載端末として実現されてもよい。また、情報処理装置100は、スマートメータ、自動販売機、遠隔監視装置又はPOS(Point Of Sale)端末などの、M2M(Machine To Machine)通信を行う端末(MTC(Machine Type Communication)端末ともいう)として実現されてもよい。さらに、情報処理装置100は、これら端末に搭載される無線通信モジュール(例えば、1つのダイで構成される集積回路モジュール)であってもよい。
図18は、本開示に係る技術が適用され得るスマートフォン900の概略的な構成の一例を示すブロック図である。スマートフォン900は、プロセッサ901、メモリ902、ストレージ903、外部接続インタフェース904、カメラ906、センサ907、マイクロフォン908、入力デバイス909、表示デバイス910、スピーカ911、無線通信インタフェース913、アンテナスイッチ914、アンテナ915、バス917、バッテリー918及び補助コントローラ919を備える。
図19は、本開示に係る技術が適用され得るカーナビゲーション装置920の概略的な構成の一例を示すブロック図である。カーナビゲーション装置920は、プロセッサ921、メモリ922、GPS(Global Positioning System)モジュール924、センサ925、データインタフェース926、コンテンツプレーヤ927、記憶媒体インタフェース928、入力デバイス929、表示デバイス930、スピーカ931、無線通信インタフェース933、アンテナスイッチ934、アンテナ935及びバッテリー938を備える。
(1)
無線通信を利用して第1情報処理装置との間で画像伝送を行う通信部と、
前記画像伝送を行う場合における前記第1情報処理装置とは異なる役割を有する第2情報処理装置を新たに接続する場合に、前記第1情報処理装置を一時停止させた後に前記第2情報処理装置との間で認証処理を行う制御部と
を具備する情報処理装置。
(2)
前記通信部は、Wi-Fi(Wireless Fidelity) CERTIFIED Miracast仕様に従って前記第1情報処理装置との間でリアルタイム画像伝送を行い、
前記制御部は、前記第1情報処理装置を一時停止させた後に、前記第1情報処理装置および前記第2情報処理装置のそれぞれとの間でHDCP再認証処理を行う
前記(1)に記載の情報処理装置。
(3)
前記制御部は、前記画像伝送を行う場合における前記第1情報処理装置の役割が送信機であり、前記情報処理装置の役割が受信機である場合において、前記第2情報処理装置の接続により前記情報処理装置の役割が中継機に変更されるときに、前記第1情報処理装置からの画像送信を一時停止させた後に前記第2情報処理装置との間で前記認証処理を行い、前記認証処理後に前記第1情報処理装置からの画像送信を再開させる前記(1)に記載の情報処理装置。
(4)
前記制御部は、前記第1情報処理装置からの画像送信を一時停止させた後に前記第1情報処理装置との間で再認証処理を行い、当該再認証処理が成功した後に、前記第2情報処理装置との間で前記認証処理を行う前記(3)に記載の情報処理装置。
(5)
前記制御部は、前記画像伝送を行う場合における前記第1情報処理装置の役割が受信機であり、前記情報処理装置の役割が送信機である場合において、前記第2情報処理装置の接続により前記情報処理装置の役割が中継機に変更されるときに、前記第1情報処理装置への画像送信を一時停止させた後に前記第2情報処理装置との間で前記認証処理を行い、前記認証処理後に前記第1情報処理装置への画像送信を再開させる前記(1)に記載の情報処理装置。
(6)
前記制御部は、前記第2情報処理装置との間で前記認証処理を行う前に、前記第1情報処理装置との無線接続の開始時に保持されたRevocation情報を、前記第2情報処理装置に送信する前記(5)に記載の情報処理装置。
(7)
前記情報処理装置は、Wi-Fi(Wireless Fidelity) CERTIFIED Miracast仕様のDual Role Deviceである前記(1)から(6)のいずれかに記載の情報処理装置。
(8)
無線通信を利用した第1情報処理装置から第2情報処理装置への画像伝送を中継する通信部と、
前記第2情報処理装置との接続を切断する場合に、前記第1情報処理装置を一時停止させた後に前記第1情報処理装置との間で再認証処理を行い、前記再認証処理後に前記第1情報処理装置からの画像送信を再開させる制御部と
を具備する情報処理装置。
(9)
前記制御部は、前記第1情報処理装置を一時停止させた後に、前記第2情報処理装置との切断処理を行う前記(8)に記載の情報処理装置。
(10)
無線通信を利用した第1情報処理装置から第2情報処理装置への画像伝送を中継する通信部と、
前記第1情報処理装置との接続を切断する場合に、前記第1情報処理装置との接続を切断する旨の通知情報を自装置および前記第2情報処理装置のうちの少なくとも1つから出力させる制御部と
を具備する情報処理装置。
(11)
前記制御部は、前記通知情報の表示または前記通知情報の音声出力により前記出力をさせる前記(10)に記載の情報処理装置。
(12)
無線通信を利用して第1情報処理装置との間で画像伝送を行う場合に、新たに接続する第2情報処理装置が前記第1情報処理装置とは異なる役割を有するか否かを判断する手順と、
前記第2情報処理装置が前記第1情報処理装置とは異なる役割を有する場合には、前記第1情報処理装置を一時停止させた後に前記第2情報処理装置との間で認証処理を行う手順と
を具備する情報処理方法。
110 通信部
120 制御部
130 記憶部
140 操作受付部
150 情報出力部
160 通信部
161 RTSPサーバ
162 RTPサーバ
163 HDCP TX
164 NIC
170 通信部
171 RTSPサーバ
172 RTPサーバ
173 HDCP RX/TX Repeater
174 RTSPクライアント
175 RTPクライアント
176 NIC
180 通信部
181 RTSPクライアント
182 RTPクライアント
183 HDCP RX
184 NIC
900 スマートフォン
901 プロセッサ
902 メモリ
903 ストレージ
904 外部接続インタフェース
906 カメラ
907 センサ
908 マイクロフォン
909 入力デバイス
910 表示デバイス
911 スピーカ
913 無線通信インタフェース
914 アンテナスイッチ
915 アンテナ
917 バス
918 バッテリー
919 補助コントローラ
920 カーナビゲーション装置
921 プロセッサ
922 メモリ
924 GPSモジュール
925 センサ
926 データインタフェース
927 コンテンツプレーヤ
928 記憶媒体インタフェース
929 入力デバイス
930 表示デバイス
931 スピーカ
933 無線通信インタフェース
934 アンテナスイッチ
935 アンテナ
938 バッテリー
941 車載ネットワーク
942 車両側モジュール
Claims (12)
- 無線通信を利用して第1情報処理装置との間で画像伝送を行う通信部と、
前記画像伝送を行う場合における前記第1情報処理装置とは異なる役割を有する第2情報処理装置を新たに接続する場合に、前記第1情報処理装置を一時停止させた後に前記第2情報処理装置との間で認証処理を行う制御部と
を具備する情報処理装置。 - 前記通信部は、Wi-Fi(Wireless Fidelity) CERTIFIED Miracast仕様に従って前記第1情報処理装置との間でリアルタイム画像伝送を行い、
前記制御部は、前記第1情報処理装置を一時停止させた後に、前記第1情報処理装置および前記第2情報処理装置のそれぞれとの間でHDCP再認証処理を行う
請求項1記載の情報処理装置。 - 前記制御部は、前記画像伝送を行う場合における前記第1情報処理装置の役割が送信機であり、前記情報処理装置の役割が受信機である場合において、前記第2情報処理装置の接続により前記情報処理装置の役割が中継機に変更されるときに、前記第1情報処理装置からの画像送信を一時停止させた後に前記第2情報処理装置との間で前記認証処理を行い、前記認証処理後に前記第1情報処理装置からの画像送信を再開させる請求項1記載の情報処理装置。
- 前記制御部は、前記第1情報処理装置からの画像送信を一時停止させた後に前記第1情報処理装置との間で再認証処理を行い、当該再認証処理が成功した後に、前記第2情報処理装置との間で前記認証処理を行う請求項3記載の情報処理装置。
- 前記制御部は、前記画像伝送を行う場合における前記第1情報処理装置の役割が受信機であり、前記情報処理装置の役割が送信機である場合において、前記第2情報処理装置の接続により前記情報処理装置の役割が中継機に変更されるときに、前記第1情報処理装置への画像送信を一時停止させた後に前記第2情報処理装置との間で前記認証処理を行い、前記認証処理後に前記第1情報処理装置への画像送信を再開させる請求項1記載の情報処理装置。
- 前記制御部は、前記第2情報処理装置との間で前記認証処理を行う前に、前記第1情報処理装置との無線接続の開始時に保持されたRevocation情報を、前記第2情報処理装置に送信する請求項5記載の情報処理装置。
- 前記情報処理装置は、Wi-Fi(Wireless Fidelity) CERTIFIED Miracast仕様のDual Role Deviceである請求項1記載の情報処理装置。
- 無線通信を利用した第1情報処理装置から第2情報処理装置への画像伝送を中継する通信部と、
前記第2情報処理装置との接続を切断する場合に、前記第1情報処理装置を一時停止させた後に前記第1情報処理装置との間で再認証処理を行い、前記再認証処理後に前記第1情報処理装置からの画像送信を再開させる制御部と
を具備する情報処理装置。 - 前記制御部は、前記第1情報処理装置を一時停止させた後に、前記第2情報処理装置との切断処理を行う請求項8記載の情報処理装置。
- 無線通信を利用した第1情報処理装置から第2情報処理装置への画像伝送を中継する通信部と、
前記第1情報処理装置との接続を切断する場合に、前記第1情報処理装置との接続を切断する旨の通知情報を自装置および前記第2情報処理装置のうちの少なくとも1つから出力させる制御部と
を具備する情報処理装置。 - 前記制御部は、前記通知情報の表示または前記通知情報の音声出力により前記出力をさせる請求項10記載の情報処理装置。
- 無線通信を利用して第1情報処理装置との間で画像伝送を行う場合に、新たに接続する第2情報処理装置が前記第1情報処理装置とは異なる役割を有するか否かを判断する手順と、
前記第2情報処理装置が前記第1情報処理装置とは異なる役割を有する場合には、前記第1情報処理装置を一時停止させた後に前記第2情報処理装置との間で認証処理を行う手順と
を具備する情報処理方法。
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