WO2015151958A1 - 伝送端末、伝送システム、及び中継装置の選択方法 - Google Patents
伝送端末、伝送システム、及び中継装置の選択方法 Download PDFInfo
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- WO2015151958A1 WO2015151958A1 PCT/JP2015/059121 JP2015059121W WO2015151958A1 WO 2015151958 A1 WO2015151958 A1 WO 2015151958A1 JP 2015059121 W JP2015059121 W JP 2015059121W WO 2015151958 A1 WO2015151958 A1 WO 2015151958A1
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- terminal
- relay device
- priority
- relay
- transmission terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- 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
- H04L65/80—Responding to QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
Definitions
- Embodiment relates to a technique for selecting a relay device that relays content data.
- An example of a transmission system that transmits and receives content data between a plurality of transmission terminals via a relay device is a video conference system that performs a video conference via a communication network such as the Internet. Since it is possible to hold a meeting with a plurality of people in different places using the video conference system, it is possible to reduce business trip expenses and business trip time. For this reason, the necessity of a video conference system is increasing.
- a plurality of video conference terminals are used as transmission terminals.
- a video conference is realized by transmitting and receiving image data and sound data between video conference terminals.
- Recent enhancement of broadband environment enables high-quality image data and high-quality sound data to be transmitted and received. This makes it easier to grasp the situation of the other party in the video conference, and the degree of communication through conversation is improved.
- a relay device that relays transmission of image data and sound data between video conference terminals is often provided for each LAN (Local Area Network) in a communication network.
- LAN Local Area Network
- a relay device connected to the same LAN as a video conference terminal that performs a video conference has been used. That is, by selecting a relay device having an IP address close to the IP address of the video conference terminal, high-quality image data is transmitted / received via the selected relay device (see Patent Document 1).
- communication such as a video conference is not only performed by users in the same region of one country, but may be performed by, for example, a plurality of users who are separated from each other in the same country. Moreover, it may be performed by the user of the place where distance is away like a different country.
- a transmission terminal configured to transmit and receive content data via any one of a plurality of relay devices, the priority of each use when using the plurality of relay devices.
- Storage means for storing the first priority information to be shown, and a second that is transmitted from another transmission terminal and indicates the priority of each use of the relay device when the other transmission terminal uses the relay device
- a transmission terminal comprising: receiving means for receiving the priority information; and selecting means for selecting one of the relay apparatuses as a relay apparatus to be used based on the first and second priority information Is provided.
- a selection method for selecting a relay device used by a transmission terminal configured to transmit and receive content data via any one of a plurality of relay devices, wherein the transmission terminal includes the transmission device First priority information indicating the priority of each use when using a plurality of relay devices is generated, and each use priority of the relay device when another transmission terminal uses the relay device And receiving one of the relay devices from the other transmission terminal and selecting one of the relay devices as a relay device to be used based on the first and second priority information.
- a selection method is provided.
- the relay device when selecting a relay device to be used, the relay device considers not only the priority information used by the own terminal but also the priority information used by other transmission terminals. Selected. For this reason, when communicating between both transmission terminals, balanced high-quality content data can be transmitted and received.
- FIG. 1 It is a figure which shows the structure of the transmission system which concerns on one Embodiment of this invention. It is a figure for demonstrating the data communication in a transmission system. It is a figure for demonstrating the image quality of low resolution image data. It is a figure for demonstrating the image quality of image data of medium resolution. It is a figure for demonstrating the image quality of high-resolution image data. It is a perspective view of the terminal concerning this embodiment. It is a block diagram of the hardware constitutions of the terminal concerning this embodiment. It is a block diagram of the hardware constitutions of the management system which concerns on this embodiment, a relay apparatus, or a program provision system. It is a functional block diagram of each terminal, apparatus, and system which comprise the transmission system which concerns on this embodiment.
- FIG. 1 is a diagram showing a configuration of a transmission system according to an embodiment of the present invention.
- FIG. 2 is a diagram for explaining data communication in the transmission system.
- 3A is a diagram showing the image quality of low-resolution image data.
- FIG. 3B is a diagram illustrating the image quality of medium-resolution image data.
- FIG. 3C is a diagram illustrating the image quality of high-resolution image data.
- a transmission system is a data providing system that transmits content data in one direction from one transmission terminal to the other transmission terminal via a transmission management system, or information and emotions between multiple transmission terminals via a transmission management system. Includes communication systems that communicate with each other.
- the communication system is a system for mutually transmitting information, emotions, and the like between a plurality of communication terminals via a communication management system.
- the communication system includes, for example, a video conference system and a video phone system.
- 1 includes a plurality of transmission terminals 10aa, 10ab, ..., displays 120aa, 120ab, ... for the transmission terminals 10aa, 10ab, ..., a plurality of relay devices 30a, 30b, 30c, 30d, A management system 50, a program providing system 90, and a maintenance system 100 are included.
- the plurality of transmission terminals 10 transmit and receive image data and sound data as an example of content data.
- transmission terminal is simply referred to as “terminal”
- transmission management system is simply referred to as “management system”.
- an arbitrary terminal among the plurality of terminals 10aa, 10ab,... Is referred to as “terminal 10”.
- An arbitrary display among the plurality of displays (120aa, 120ab,...) Is referred to as a “display 120”.
- An arbitrary relay device among the plurality of relay devices 30a, 30b, 30c, and 30d is referred to as a “relay device 30”.
- a terminal as a request source that requests the start of a video conference is referred to as a “request source terminal”
- a terminal as a destination (relay destination) that is a request destination is referred to as a “destination terminal”.
- a management information session “sei” for transmitting and receiving various types of management information is transmitted between the request source terminal and the destination terminal via the management system 50.
- a management information session “sei” for transmitting and receiving various types of management information is transmitted between the request source terminal and the destination terminal via the management system 50.
- four pieces of data of high resolution image data, medium resolution image data, low resolution image data, and sound data are transmitted and received via the relay device 30.
- Four sessions are established.
- these four sessions are collectively referred to as an image / sound data session “sed”.
- the low-resolution image is a base image having 160 pixels in the horizontal direction and 120 pixels in the vertical direction.
- the medium-resolution image is composed of 320 pixels in the horizontal direction and 240 pixels in the vertical direction.
- the high-resolution image is composed of 640 pixels in the horizontal direction and 480 pixels in the vertical direction. In the case of passing through a narrow band route, low-quality image data consisting only of low-resolution image data serving as a base image is relayed.
- band When the band is relatively wide, low-resolution image data serving as a base image and medium-quality image data composed of medium-resolution image data are relayed.
- bandwidth When the bandwidth is very wide, high-resolution image data composed of low-resolution image data serving as base image quality, intermediate-resolution image data, and high-resolution image data is relayed.
- the relay device 30 shown in FIG. 1 relays transmission of content data among a plurality of terminals 10.
- the management system 50 centrally manages the login authentication from the terminal 10, the management of the call status of the terminal 10, the management of the destination list, and the communication status of the relay device 30.
- the image of the image data may be a moving image or a still image, and may include both a moving image and a still image.
- Each of the plurality of routers 70a, 70b, 70c, 70d, 70ab, and 70cd selects an optimum route for image data and sound data.
- an arbitrary router among the routers 70a, 70b, 70c, 70d, 70ab, and 70cd) is referred to as a “router 70”.
- the program providing system 90 includes an HD (Hard Disk) 204 described later.
- the HD 204 stores a terminal program for causing the terminal 10 to realize various functions (or to cause the terminal 10 to function as various means).
- the program providing system 90 can transmit a terminal program to the terminal 10.
- the HD 204 of the program providing system 90 also stores a relay device program for causing the relay device 30 to realize various functions (or to cause the relay device 30 to function as various means).
- the program providing system 90 can transmit the relay device program to the relay device 30.
- the HD 204 of the program providing system 90 also stores a transmission management program for causing the management system 50 to realize various functions (or to cause the management system 50 to function as various means).
- the program providing system 90 can transmit a transmission management program to the management system 50.
- the maintenance system 100 is a computer for maintaining, managing, or maintaining at least one of the terminal 10, the relay device 30, the management system 50, and the program providing system 90.
- the maintenance system 100 performs maintenance such as maintenance, management, and maintenance of at least one of the terminal 10, the relay device 30, the management system 50, and the program providing system 90 remotely via the communication network 2.
- the maintenance system 100 does not go through the communication network 2, but includes a model number, a manufacturing number, a sales destination, a maintenance check, at least one of the terminal 10, the relay device 30, the management system 50, and the program providing system 90. Or, maintenance such as failure history management is performed.
- the terminals 10aa, 10ab, 10ac,..., The relay device 30a, and the router 70a are communicably connected via the LAN 2a.
- the terminals 10ba, 10bb, 10bc,..., The relay device 30b, and the router 70b are communicably connected via the LAN 2b.
- the LAN 2a and the LAN 2b are communicably connected via a dedicated line 2ab including a router 70ab.
- Both the LAN 2a and the LAN 2b are constructed in a predetermined area A. For example, if the region A is Japan, the LAN 2a is constructed in, for example, an office in Tokyo, and the LAN 2b is constructed in, for example, an office in Osaka.
- the terminals 10ca, 10cb, 10cc,..., The relay device 30c, and the router 70c are communicably connected via the LAN 2c.
- the terminals 10da, 10db, 10dc,..., The relay device 30d, and the router 70d are communicably connected via a LAN 2d.
- the LAN 2c and the LAN 2d are communicably connected by a dedicated line 2cd including a router 70cd.
- Both the LAN 2c and the LAN 2d are constructed in a predetermined area B. For example, if the region B is the United States of America, the LAN 2c is constructed in an office in New York, for example. C. Built in the office. Area A and area B are communicably connected via the Internet 2i by routers 70ab and 70cd, respectively.
- the management system 50 and the program providing system 90 are communicably connected to the terminal 10 and the relay device 30 via the Internet 2i.
- the management system 50 and the program providing system 90 may be installed in the region A or the region B, or may be installed in a region other than these.
- the communication network 2 is constructed by the LAN 2a, the LAN 2b, the dedicated line 2ab, the Internet 2i, the dedicated line 2cd, the LAN 2c, and the LAN 2d.
- the communication network 2 may include not only wired communication but also a place where wireless communication such as WiFi (Wireless Fidelity) or Bluetooth (registered trademark) is performed.
- WiFi Wireless Fidelity
- Bluetooth registered trademark
- FIG. 1 a set of four numbers shown under each terminal 10, each relay device 30, management system 50, each router 70, and program providing system 90 is a general IPv4 IP address. It is shown simply. For example, the IP address of the terminal 10aa is “1.2.1.3”. IPv6 may be used instead of IPv4, but IPv4 is used to simplify the description.
- each terminal 10 is not only a call between a plurality of business establishments or a call between different rooms in the same business establishment, but a call within the same room or a call between the outdoors and indoors or outdoors and outdoors. May be used.
- wireless communication such as a cellular phone communication network is performed.
- FIG. 4 is a perspective view of the call terminal 10 according to the present embodiment.
- the call terminal 10 includes a housing 1100, an arm 1200, and a camera housing 1300.
- An air intake surface (not shown) formed by a plurality of air intake holes is provided on the front side wall surface 1110 of the housing 1100.
- a rear side wall surface 1120 of the housing 1100 is provided with an exhaust surface 1121 in which a plurality of exhaust holes are formed.
- a sound collecting hole 1131 is formed in the right wall surface 1130 of the housing 1100. Sounds, sounds, noises, and the like can be collected by a built-in microphone 114, which will be described later, through the sound collection hole 1131.
- An operation panel 1150 is formed on the right wall surface 1130 side of the housing 1100.
- the operation panel 1150 is provided with a plurality of operation buttons 108a to 108e described later, a power switch 109 described later, and an alarm lamp 119 described later.
- the operation panel 1150 is formed with a sound output surface 1151 formed by a plurality of sound output holes for passing an output sound from a built-in speaker 115 described later.
- a housing portion 1160 is formed as a recess for housing the arm 1200 and the camera housing 1300.
- the right wall surface 1130 of the housing 1100 is provided with a plurality of connection ports (1132a to 1132c) for electrically connecting cables to an external device connection I / F 118 described later.
- the left wall surface 1140 of the housing 1100 is provided with a connection port (not shown) for electrically connecting a cable 120c for the display 120 to an external device connection I / F 118 described later.
- the arm 1200 is attached to the housing 1100 via a torque hinge 1210.
- the arm 1200 is rotatable in the vertical direction with respect to the housing 1100 within a tilt angle ⁇ 1 of 135 degrees.
- FIG. 4 shows a state where the tilt angle ⁇ 1 is 90 degrees.
- the camera housing 1300 is provided with a built-in camera 112 described later.
- the camera 112 can capture images of users, documents, rooms, and the like.
- a torque hinge 1310 is formed in the camera housing 1300.
- the camera housing 1300 is attached to the arm 1200 via a torque hinge 1310.
- the camera housing 1300 is attached to the arm 1200 via a torque hinge 1310.
- the camera housing 1300 is vertically and horizontally movable with respect to the arm 1200 within a range of a pan angle ⁇ 2 of ⁇ 180 degrees and a tilt angle ⁇ 3 of ⁇ 45 degrees with the state shown in FIG. Can be rotated.
- the appearance of the call terminal 10 shown in FIG. 4 is an example, and the call terminal 10 is not limited to this appearance.
- the call terminal 10 may be, for example, a general-purpose PC, a smartphone, or a tablet terminal.
- the camera and microphone do not necessarily have to be built-in and may be externally attached.
- the external appearance of the management system 50 is the same as that of a general server computer, and the description thereof is omitted.
- FIG. 5 is a hardware configuration diagram of the terminal 10 according to this embodiment of the present invention.
- the terminal 10 includes a CPU (Central Processing Unit) 101, a ROM (Read Only Memory) 102, a RAM (Random Access Memory) 103, a flash memory 104, an SSD (Solid State). Drive) 105, media drive 107, operation button 108, power switch 109, and network I / F (Interface) 111.
- the CPU 101 controls the operation of the entire terminal 10.
- the ROM 102 stores a program used for driving the CPU 101 such as IPL (Initial Program Loader).
- the RAM 103 is used as a work area for the CPU 101.
- the flash memory 104 stores various data such as a terminal program, image data, and sound data.
- the SSD 105 controls reading or writing of various data with respect to the flash memory 104 according to the control of the CPU 101.
- the media drive 107 controls reading or writing (storage) of data with respect to the recording medium 106 such as a flash memory.
- the operation button 108 is operated when the destination of the terminal 10 is selected.
- the power switch 109 is operated to switch on / off the power of the terminal 10.
- the network I / F 111 is an interface for performing data transmission using the communication network 2.
- the terminal 10 includes a camera 112, an image sensor I / F 113, a microphone 114, a speaker 115, a sound input / output I / F 116, a display I / F 117, an external device connection I / F 118, and a bus line 110.
- the camera 112 is a built-in camera that captures an image of a subject under the control of the CPU 101 and obtains image data.
- the image sensor I / F 113 controls driving of the camera 112.
- the microphone 114 is a built-in microphone that inputs sound.
- the speaker 115 is a built-in speaker that outputs sound.
- the sound input / output I / F 116 processes input / output of a sound signal between the microphone 114 and the speaker 115 under the control of the CPU 101.
- the display I / F 117 transmits image data to the external display 120 under the control of the CPU 101.
- the external device connection I / F 118 is an interface for connecting various external devices.
- the bus line 110 is a bus line such as an address bus or a data bus for electrically connecting the above-described components as shown in FIG.
- the display 120 is a display unit configured by a liquid crystal or an organic EL that displays an image of an object, an operation icon, and the like.
- the display 120 is connected to the display I / F 117 by a cable 120c.
- the cable 120c may be an analog RGB (VGA) signal cable, a component video cable, HDMI (registered trademark) (High-Definition Multimedia Interface) or DVI (Digital Video Video Interactive). )
- a signal cable may be used.
- the camera 112 includes a lens and a solid-state imaging device that converts light into electric charges and digitizes an object image (video).
- the camera 112 uses a CMOS (Complementary Metal Oxide Semiconductor), a CCD (Charge Coupled Device), or the like as a solid-state imaging device.
- CMOS Complementary Metal Oxide Semiconductor
- CCD Charge Coupled Device
- External devices such as an external camera, an external microphone, and an external speaker can be connected to the external device connection I / F 118 by a USB (Universal Serial Bus) cable or the like.
- USB Universal Serial Bus
- the external camera is driven in preference to the built-in camera 112 under the control of the CPU 101.
- each of the external microphones and the built-in speaker 115 is given priority over the internal microphone 114 and the internal speaker 115 according to the control of the CPU 101.
- An external speaker is driven.
- the recording medium 106 is detachable from the terminal 10. As long as it is a non-volatile memory that reads or writes data according to the control of the CPU 101, not only the flash memory 104 but also an EEPROM (Electrically Erasable and Programmable ROM) or the like may be used.
- EEPROM Electrical Erasable and Programmable ROM
- the terminal program may be an installable or executable file and may be recorded on a computer-readable recording medium such as the recording medium 106.
- the terminal program may be stored in the ROM 102 instead of the flash memory 104.
- FIG. 6 is a hardware block diagram of the management system according to the present embodiment.
- the management system 50 includes a CPU 201, ROM 202, RAM 203, HD 204, HDD (Hard Disk Drive) 205, media drive 207, display 208, network I / F 209, keyboard 211, mouse 212, CD-ROM drive 214, and these components.
- a bus line 210 to be connected is provided.
- CPU 201 controls the operation of the entire management system 50.
- the ROM 202 stores a program used for driving the CPU 201 such as IPL.
- the RAM 203 stores various data such as a transmission management program used as a work area of the CPU 201.
- An HDD (Hard Disk Disk Drive) 205 controls reading or writing of various data with respect to the HD 204 according to the control of the CPU 201.
- the media drive 207 controls reading or writing (storage) of data with respect to a recording medium 206 such as a flash memory.
- the display 208 displays various information such as a cursor, menu, window, character, or image.
- the network I / F 209 is an interface for transmitting data using the communication network 2.
- the keyboard 211 includes a plurality of keys for inputting characters, numerical values, various instructions, and the like.
- the mouse 212 is used for selecting and executing various instructions, selecting a processing target, moving a cursor, and the like.
- the CD-ROM drive 214 controls reading or writing of various data with respect to a CD-ROM (Compact Disc Disc Read Only Memory) 213 as an example of a removable recording medium.
- the bus line 210 is a bus line such as an address bus or a data bus for electrically connecting the above-described components as shown in FIG.
- the transmission management program may be an installable or executable file and may be recorded on a computer-readable recording medium such as the recording medium 206 or the CD-ROM 213. Further, the transmission management program may be stored in the ROM 202 instead of the HD 204.
- the relay device 30 has the same hardware configuration as that of the management system 50, and a description thereof is omitted. However, a relay device program for controlling the relay device 30 is recorded in the HD 204. Also in this case, the relay device program may be an installable or executable file and may be recorded on a computer-readable recording medium such as the recording medium 206 or the CD-ROM 213. The relay device program may be stored in the ROM 202 instead of the HD 204.
- the program providing system 90 and the maintenance system 100 have the same hardware configuration as that of the management system 50, and a description thereof will be omitted.
- a program providing program for controlling the program providing system 90 is recorded in the HD 204.
- the program providing program may be an installable or executable file and may be recorded on a computer-readable recording medium such as the recording medium 206 or the CD-ROM 213.
- the program providing system program may be stored in the ROM 202 instead of the HD 204.
- the removable recording medium include a computer-readable recording medium such as a CD-R (Compact Disc Recordable), a DVD (Digital Versatile Disk), and a Blu-ray disc.
- a computer-readable recording medium such as a CD-R (Compact Disc Recordable), a DVD (Digital Versatile Disk), and a Blu-ray disc.
- FIG. 7 is a functional block diagram of each terminal, device, and system constituting the transmission system 1 according to the present embodiment.
- the terminal 10, the relay device 30, and the management system 50 are connected so that data communication can be performed via the communication network 2.
- the program providing system 90 shown in FIG. 1 is omitted in FIG. 7 because it is not directly related to the video conference communication.
- the terminal 10 includes a transmission / reception unit 11, an operation input reception unit 12, a login request unit 13, an imaging unit 14, a sound input unit 15a, a sound output unit 15b, a selection unit 16, a display control unit 17, a delay detection unit 18, and a memory / A read processing unit 19 is included.
- Each of these units is a function realized by any one of the constituent elements shown in FIG. 5 being operated by a command from the CPU 101 according to the terminal program developed from the flash memory 104 onto the RAM 103, or Means.
- the terminal 10 has a storage unit 1000 configured by the RAM 103 shown in FIG. 5 and the flash memory 104 shown in FIG.
- the transmission / reception unit 11 transmits / receives various data (information) to / from other terminals, devices, or systems via the communication network 2.
- the transmission / reception unit 11 starts receiving state information indicating the state of each terminal as a destination candidate from the management system 50 before starting a call with a desired destination terminal.
- This status information includes not only the operating state of each terminal 10 (ON line or OFF line state) but also whether it is possible to make a call even if it is an ON line, whether it is in a call, whether it is away from the office, etc. The detailed state of is shown.
- This state information is not limited to the operating state of each terminal 10, but the terminal 120 has the cable 120 c disconnected from the terminal 10, outputs a sound but does not output an image, or does not output a sound (MUTE ) And so on.
- MUTE a sound
- the operation input receiving unit 12 is realized by a command from the CPU 101 shown in FIG. 5, and the operation button 108 and the power switch 109 shown in FIG.
- the operation input receiving unit 12 receives various inputs from the user. For example, when the user turns on the power switch 109 shown in FIG. 5, the operation input receiving unit 12 shown in FIG. 7 receives the power ON and turns on the power.
- the login request unit 13 is realized by a command from the CPU 101 shown in FIG.
- the login request unit 13 receives login request information indicating that login is requested from the transmission / reception unit 11 to the management system 50 via the communication network 2 and the current IP address of the requesting terminal when the power supply is turned on. Send automatically.
- the transmission / reception unit 11 transmits state information indicating that the power supply is turned off to the management system 50.
- the operation input receiving unit 12 completely turns off the power.
- the management system 50 can grasp that the terminal 10 has changed from the power ON state to the power OFF state.
- the imaging unit 14 is realized by a command from the CPU 101 illustrated in FIG. 5 and the camera 112 and the imaging element I / F 113 illustrated in FIG.
- the imaging unit 14 images a subject and outputs image data obtained by the imaging.
- the sound input unit 15a is realized by a command from the CPU 101 shown in FIG. 5 and a sound input / output I / F 116 shown in FIG. After the user's sound is converted into a sound signal by the microphone 140, the sound input unit 15a inputs sound data related to this sound signal.
- the sound output unit 15b is realized by the instruction from the CPU 101 shown in FIG. 5 and the sound input / output I / F 116 shown in FIG.
- the sound output unit 15 b outputs a sound signal related to the sound data to the speaker and causes the speaker 150 to output a sound.
- the selection unit 16 selects the content data based on the priority list on the terminal side (an example of the first priority information) and the priority list on the other transmission terminal side (an example of the second priority information). Select a specific relay device to relay. Therefore, the selection unit 16 implements a summation unit 16a, a determination unit 16b, and a setting unit 16c as illustrated in FIG. 8 according to a command from the CPU 101 illustrated in FIG. 9A and 9B are diagrams illustrating priority order lists of relay apparatuses. As shown in FIGS. 9A and 9B, in the priority list, the relay device ID and the priority are associated and managed for each priority. The priority (priority order) is set by the user of each transmission terminal 10 or the administrator of the management system 50.
- the priority of the relay device 30a indicated by the relay device ID “111a” is highest in the list of FIG. 9A but lowest in the list of FIG. 9B.
- the priority order of the relay device 30b indicated by the relay device ID “111b” is the second highest in the list of FIG. 9A and the second highest in the list of FIG.
- the summation unit 16 a derives the total priority by summing the priorities in the priority list on the own terminal side and the priority list on the other transmission terminal side for each relay device ID.
- the determination unit 16b determines whether the total priority having the highest value among the total priorities is one.
- the determining unit 16c determines the relay device ID related to the highest total priority among the total priority among the plurality of relay device IDs. When there are a plurality of highest priority total priorities, the determination unit 16c randomly (arbitrarily) determines the relay device ID of the highest priority among the highest total priority.
- the display control unit 17 is realized by the command from the CPU 101 shown in FIG. 5 and the display I / F 117 shown in FIG. As will be described later, the display control unit 17 combines the received image data with different resolutions, and performs control for transmitting the combined image data to the display 120.
- the display control unit 17 can transmit information on the destination list received from the management system 50 to the display 120 and cause the display 120 to display the destination list.
- the delay detection unit 18 is realized by a command from the CPU 101 shown in FIG.
- the delay detection unit 18 detects a delay time (ms) of image data or sound data sent from another terminal 10 via the relay device 30.
- the storage / reading processing unit 19 is realized by the instruction from the CPU 101 shown in FIG. 5 and the SSD 105 shown in FIG. 5, or realized by the instruction from the CPU 101.
- the storage / reading processing unit 19 stores various data in the storage unit 1000 and performs processing for reading out various data stored in the storage unit 1000.
- the storage unit 1000 stores a terminal ID (Identification) for identifying the terminal 10, a password, and the like.
- the image data and sound data received when making a call with the destination terminal are overwritten and stored in the storage unit 1000 each time they are received.
- an image is displayed on the display 120 by the image data before being overwritten, and a sound is output from the speaker 150 by the sound data before being overwritten.
- the storage unit 1000 stores a priority list of the terminal itself.
- the terminal ID and the relay device ID described later in this embodiment indicate identification information such as a language, characters, symbols, or various signs used to uniquely identify the terminal 10 and the relay device 30, respectively.
- the terminal ID and the relay device ID may be identification information generated by combining at least two of the language, characters, symbols, and various indicia.
- the relay device 30 includes a transmission / reception unit 31, a state detection unit 32, a data quality confirmation unit 33, a change quality management unit 34, a data quality change unit 35, and a storage / read processing unit 39. Each of these units is a function or means realized by any of the constituent elements shown in FIG. 6 being operated by a command from the CPU 201 according to the relay device program developed from the HD 204 onto the RAM 203. is there.
- the relay apparatus 30 includes a storage unit 3000 configured by the RAM 203 illustrated in FIG. 6 and / or the HD 204 illustrated in FIG.
- the storage unit 3000 has a change quality management DB (Data Base) 3001 configured by a change quality management table as shown in FIG.
- the IP address of the terminal 30 as the relay destination (destination) of the image data and the image quality of the image data relayed by the relay device 30 are associated with the relay destination and managed.
- Each functional configuration of the relay device 30 will be described in detail. Below, the relationship with the main component for implement
- the transmission / reception unit 31 transmits / receives various data (information) to / from other terminals, devices, or systems via the communication network 2.
- the state detection unit 32 is realized by a command from the CPU 201 shown in FIG.
- the state detection unit 32 detects the operating state of the relay device 30 having the state detection unit 32.
- the operating state includes an “ON line”, “OFF line”, “busy” state, or “temporarily interrupted” state.
- the data quality confirmation unit 33 is realized by a command from the CPU 201 shown in FIG.
- the data quality confirmation unit 33 searches the change quality management DB 3001 (see FIG. 10) using the IP address of the destination terminal as a search key, and extracts the image quality of the corresponding relayed image data, thereby relaying the image data to be relayed. Check the image quality.
- the change quality management unit 34 is realized by a command from the CPU 201 shown in FIG.
- the change quality management unit 34 changes the contents of the change quality management DB 3001 based on quality information to be described later sent from the management system 50.
- a video conference is performed by transmitting and receiving high-quality image data between a request source terminal (terminal 10aa) whose terminal ID is “01aa” and a destination terminal (terminal 10db) whose terminal ID is “01db”.
- a video conference is performed by transmitting and receiving high-quality image data between a request source terminal (terminal 10aa) whose terminal ID is “01aa” and a destination terminal (terminal 10db) whose terminal ID is “01db”.
- the request source terminal (terminal 10bb) and the destination terminal (terminal 10ca) that conduct another video conference start the video conference via the communication network 2, the destination terminal (terminal 10db) receives image data. Delay may occur.
- the relay device 30 lowers the image quality of the image data relayed so far from high image quality to medium image quality. Then, based on the quality information indicating the medium image quality, the content of the change quality management DB 3001 is changed so that the image quality of the image data relayed by the relay device 30 is lowered from the high image quality to the medium image quality.
- the data quality changing unit 35 is realized by a command from the CPU 201 shown in FIG.
- the data quality changing unit 35 changes the image quality of the image data sent from the transmission source terminal 10 based on the contents of the changed change quality management DB 3001.
- the storage / reading processing unit 39 is realized by a command from the CPU 201 shown in FIG. 6 and the HDD 205 shown in FIG.
- the storage / reading processing unit 39 stores various data in the storage unit 3000 and performs processing for reading out various data stored in the storage unit 3000.
- the management system 50 includes a transmission / reception unit 51, a terminal authentication unit 52, a terminal extraction unit 54, a terminal state acquisition unit 55, a session management unit 57, a quality determination unit 58, a storage / read processing unit 59, and a delay time management unit 60. is doing.
- Each of these units is a function or means realized by any of the constituent elements shown in FIG. 6 being operated by an instruction from the CPU 201 according to the management system program expanded from the HD 204 onto the RAM 203. is there.
- the management system 50 has a storage unit 5000 configured by the HD 204 shown in FIG.
- the storage unit 5000 has an authentication management DB 5002 configured by an authentication management table as shown in FIG.
- each password is associated with each terminal ID of all terminals 10 managed by the management system 50 and managed.
- the authentication management table shown in FIG. 11 indicates that the terminal ID of the terminal 10aa is “01aa” and the password is “aaaa”.
- the storage unit 5000 has a terminal management DB 5003 configured by a terminal management table as shown in FIG.
- the terminal management table for each terminal ID of each terminal 10, the destination name when each terminal 10 is the destination, the operating status of each terminal 10, the reception date and time when the log-in request information described below was received by the management system 50, and The IP address of the terminal 10 is managed in association with it.
- the terminal 10aa with the terminal ID “01aa” has the terminal name “Japan Tokyo Office AA terminal” and the operating state “ON line (call possible)”.
- the date and time when the login request information is received by the management system 50 is “13:40 on November 10, 2009”, and the IP address of this terminal 10aa is “1.2.1.3”. ing.
- the storage unit 5000 has a destination list management DB 5004 configured by a destination list management table as shown in FIG.
- the destination list management table all terminal IDs of destination terminals registered as destination terminal candidates are managed in association with terminal IDs of request source terminals that request the start of a call in a video conference.
- the destination list management table shown in FIG. 13 shows the destination terminal (terminal 10db) that can request the start of a video conference call from the requesting terminal (terminal 10aa) whose terminal ID is “01aa”.
- the candidates indicate that the terminal 10ab has a terminal ID “01ab”, the terminal 10ba has a terminal ID “01ba”, the terminal 10bb has a terminal ID “01bb”, and the like.
- the destination terminal candidates are updated by being added or deleted in response to a request for addition or deletion from an arbitrary request source terminal to the management system 50.
- the storage unit 5000 has a session management DB 5005 configured by a session management table as shown in FIG.
- the session management table for each selection session ID used to execute a session for selecting the relay device 30, the relay device ID of the relay device 30 used for relaying image data and sound data, the terminal of the request source terminal
- the management system 50 receives the ID, the terminal ID of the destination terminal, the reception delay time (ms) when image data is received at the destination terminal, and the delay information indicated by this delay time from the destination terminal.
- the reception date and time received at is associated and managed. For example, in the session management table shown in FIG.
- the relay device 30b (relay device ID “111b”) selected in the session executed using the selection session ID “se1” has the terminal ID “01aa”. "And the destination terminal (terminal 10db) whose terminal ID is" 01db "is relayed between the request source terminal (terminal 10aa) and the destination terminal (terminal 10db). It shows that the delay time of the image data at the time of “14:00 on November 10” is 200 (ms).
- the reception date and time of the delay information may be managed based on the delay information transmitted from the request source terminal instead of the destination terminal. However, when a video conference is performed between three or more terminals 10, the reception date and time of delay information is managed based on the delay information transmitted from the terminal 10 on the image data and sound data receiving side.
- the storage unit 5000 has a quality management DB 5007 configured by a quality management table as shown in FIG.
- the quality management table as the delay time (ms) of the image data at the request source terminal or the destination terminal is longer, the delay time of the image data and the image data quality ( Are managed in association with each other.
- the transmission / reception unit 51 is realized by a command from the CPU 201 shown in FIG. 6 and a network I / F 209 shown in FIG.
- the transmission / reception unit 51 transmits / receives various data (information) to / from other terminals, devices, or systems via the communication network 2.
- the terminal authentication unit 52 is realized by a command from the CPU 102 shown in FIG.
- the terminal authentication unit 52 searches the authentication management DB 5002 of the storage unit 5000 using the terminal ID and password included in the login request information received via the transmission / reception unit 51 as search keys. Then, the terminal authentication unit 52 performs terminal authentication by determining whether the same terminal ID and password are managed in the authentication management DB 5002.
- the state management unit 53 is realized by a command from the CPU 102 shown in FIG.
- the state management unit 53 stores the terminal ID of the request source terminal, the operation status of the request source terminal, the management system 50 in the terminal management DB 5003 (see FIG. 12) in order to manage the operation status of the request source terminal that has requested login.
- the reception date and time when the login request information is received and the IP address of the request source terminal are stored and managed in association with each other.
- the state management unit 53 allows the terminal management DB 5003 (based on the state information indicating that the power is turned off, sent from the terminal 10 when the user turns the power switch 109 of the terminal 10 from ON to OFF.
- the operation state indicating the ON line in FIG. 12 is changed to the OFF line.
- the terminal extraction unit 54 is realized by a command from the CPU 102 shown in FIG.
- the terminal extraction unit 54 searches the destination list management DB 5004 (see FIG. 13) using the terminal ID of the request source terminal that requested the login as a key, and reads out the terminal IDs of candidate destination terminals that can talk to the request source terminal. Thus, the terminal ID is extracted.
- the terminal extraction unit 54 searches the destination list management DB 5004 (see FIG. 13) using the terminal ID of the request source terminal that requested the login as a key, and registers the terminal ID of the request source terminal as a destination terminal candidate.
- the terminal IDs of other request source terminals are also extracted.
- the terminal state acquisition unit 55 is realized by a command from the CPU 102 shown in FIG.
- the terminal status acquisition unit 55 searches the terminal management DB 5003 (see FIG. 12) using the destination terminal candidate terminal ID extracted by the terminal extraction unit 54 as a search key, and the terminal extracted by the terminal extraction unit 54 Read the operating status for each ID. Thereby, the terminal state acquisition unit 55 can acquire the operating state of the candidate destination terminal that can make a call with the request source terminal that has requested the login. Further, the terminal state acquisition unit 55 searches the terminal management DB 5003 using the terminal ID extracted by the terminal extraction unit 54 as a search key, and also acquires the operating state of the request source terminal that has requested login.
- the session management unit 57 is realized by a command from the CPU 102 shown in FIG.
- the session management unit 57 associates the session management DB 5005 (see FIG. 14) in the storage unit 5000 with the selection session ID generated by the selection session ID generation unit, the terminal ID of the request source terminal, and the terminal ID of the destination terminal.
- the session management unit 57 stores the relay device ID of the relay device 30 finally selected by the setting unit 16c of the terminal 10 for each session ID for selection in the session management DB 5005 (see FIG. 14). And manage.
- the quality determining unit 58 searches the quality management DB 5007 (see FIG. 15) using the delay time as a search key and extracts the image quality of the corresponding image data, thereby determining the image quality of the image data to be relayed to the relay device 30. To do.
- the storage / reading processing unit 59 is executed by a command from the CPU 102 shown in FIG. 6 and the HDD 205 shown in FIG.
- the storage / reading processing unit 59 stores various data in the storage unit 5000 and performs processing for reading out various data stored in the storage unit 5000.
- the delay time management unit 60 is realized by a command from the CPU 102 shown in FIG.
- the delay time management unit 60 extracts the corresponding terminal ID by searching the terminal management DB 5003 (see FIG. 12) using the IP address of the destination terminal as a search key. Further, the delay time management unit 60, in the session management table of the session management DB 5005 (see FIG. 14), the delay time indicated by the delay information in the field of the delay time in the record including the extracted terminal ID.
- the delay time management unit 60 in the session management table of the session management DB 5005 (see FIG. 14), the delay time indicated by the delay information in the field of the delay time in the record including the extracted terminal ID.
- FIG. 16 is a sequence diagram illustrating processing in a preparation stage for starting a call between terminals.
- FIG. 17 is a sequence diagram illustrating processing for narrowing down the relay devices 30.
- FIG. 18 is a sequence diagram illustrating processing in which the terminal 10 selects the relay device 30.
- FIG. 19 is a flowchart showing processing for selecting the relay device 30 at the terminal.
- FIG. 20 is a sequence diagram illustrating processing for transmitting and receiving image data and sound data between terminals.
- FIG. 16 a description will be given of the transmission / reception processing of each management information in the preparation stage before starting a call between the terminal 10aa and the terminal 10db.
- various types of management information are transmitted and received by the management information session sei shown in FIG. 2.
- the operation input receiving unit 12 shown in FIG. 7 receives the power ON and turns on the power (step S21).
- the login request unit 13 automatically transmits login request information indicating a login request from the transmission / reception unit 11 to the management system 50 via the communication network 2 in response to the reception of the power ON (step S22).
- the login request information includes a terminal ID and a password for identifying the terminal 10aa that is the own terminal as the request source.
- the terminal ID and password are data read from the storage unit 1000 via the storage / read processing unit 19 and sent to the transmission / reception unit 11.
- the management system 50 on the receiving side can grasp the IP address of the terminal 10ab on the transmitting side.
- the terminal authentication unit 52 of the management system 50 uses the terminal ID and password included in the login request information received via the transmission / reception unit 51 as search keys, and the authentication management DB 5002 of the storage unit 5000 (see FIG. 11).
- Terminal authentication is performed by determining whether the same terminal ID and password are managed in the authentication management DB 5002 (step S23). Since the same terminal ID and password are managed by the terminal authentication unit 52, when it is determined that the login request is from the terminal 10 having a valid use authority, the state management unit 53 displays the terminal management DB 5003. (See FIG. 12), the terminal ID of the terminal 10aa, the operating state, the reception date and time when the login request information is received, and the IP address of the terminal 10aa are stored in association with each other (step S24).
- the terminal ID “01aa”, the operation state “ON line”, the reception date and time “2009.11.10.13:40”, and the IP address “10aa” "1.2.1.3” will be managed in association with each other.
- the transmission / reception unit 51 of the management system 50 sends the authentication result information indicating the authentication result obtained by the terminal authentication unit 52 via the communication network 2 to the request source terminal (terminal 10aa) that made the login request. (Step S25).
- the following processing is performed when the terminal authentication unit 52 determines that the terminal has a valid usage right.
- the terminal extraction unit 54 of the management system 50 searches the destination list management DB 5004 (see FIG. 13) using the terminal ID “01aa” of the request source terminal (terminal 10aa) that requested the login as a search key, and requests the request source terminal (terminal 10aa).
- the terminal IDs of candidate destination terminals that can communicate with the destination terminal are read out (step S26).
- the terminal IDs “01ab”, “01ba”, and “01db” of the destination terminals (terminals 10ab, 10ba, 10db) corresponding to the terminal ID “01aa” of the request source terminal (terminal 10aa) are extracted.
- the terminal state acquisition unit 55 uses the terminal IDs “01ab”, “01ba”, and “01db” of the destination terminal candidates extracted by the terminal extraction unit 54 as search keys, and the terminal management DB 5003 (see FIG. 12). And the operating states “OFF line”, “ON line”, and “ON line” are read out for each terminal ID extracted by the terminal extracting unit 54 to obtain the operating states of the terminals 10ab, 10ba, and 10db. (Step 27).
- the transmission / reception unit 51 uses the terminal IDs “01ab”, “01ba”, “01db” as search keys used in step 27 and the corresponding destination terminals (terminals 10ab, 10ba, 10db). Is sent to the request source terminal (terminal 10aa) via the communication network 2 (step S28). As a result, the request source terminal (terminal 10aa) has the current operating state “OFF line” of the terminals (10ab, 10ba, 10db) that are candidates for destination terminals that can communicate with the request source terminal (terminal 10aa). ”,“ ON line ”, and“ ON line ”.
- the terminal extraction unit 54 of the management system 50 searches the destination list management DB 5004 (see FIG. 13) using the terminal ID “01aa” of the request source terminal (terminal 10aa) that requested the login as a search key, and the request source
- the terminal IDs of other requesting terminals that have registered the terminal ID “01aa” of the terminal (terminal 10aa) as candidates for the destination terminal are extracted (step S29).
- the terminal IDs of the other request source terminals to be extracted are “01ab”, “01ba”, and “01db”.
- the terminal state acquisition unit 55 of the management system 50 searches the terminal state management DB 5003 (see FIG. 12) using the terminal ID “01aa” of the request source terminal (terminal 10aa) that requested the login as a search key. Then, the operating state of the request source terminal (terminal 10aa) that requested the login is acquired (step S30).
- the transmitter / receiver 51 operates in the terminal management DB 5003 (see FIG. 12) among the terminals 10ab, 10ba, and 10db associated with the terminal IDs “01ab”, “01ba”, and “01db” extracted in step S29.
- the destination status information including the terminal ID “01aa” and the operation status “ON line” of the request source terminal (terminal 10aa) acquired in step S30 is added to the terminals 10ba and 10db whose status is “ON line”. Transmit (steps S31-1, 2).
- the transmission / reception unit 51 transmits the destination status information to the terminals (10ba, 10db), it is managed by the terminal management table shown in FIG. 12 based on each terminal ID (“01ba”, “01db”).
- the terminal ID “of the request source terminal (terminal 10aa) that requested the login is sent to each of the other destination terminals (terminals 10db and 10ba) that can communicate with the request source terminal (terminal 10aa) that requested the login. 01aa ”and the operating state“ ON line ”can be transmitted.
- FIG. 17 various types of management information are transmitted and received through the management information session sei shown in FIG.
- the user of the request source terminal (terminal 10aa) has selected to start a call with the destination terminal (terminal 10db) will be described.
- the operation input reception unit 12 shown in FIG. 7 receives a request to start a call with the destination terminal 10db (Ste S41). Then, the transmission / reception unit 11 of the request source terminal (terminal 10aa) transmits start request information indicating that it is desired to start a call to the management system 50 (step S42).
- This start request information includes the terminal ID “01aa” of the terminal 10aa, the terminal ID “01db” of the destination terminal (terminal 10db), and the priority order list of the relay device (see FIG. 9A).
- the transmission / reception unit 51 of the management system 50 can receive the start request information and the IP address “1.2.1.3” of the request source terminal (terminal 10aa) that is the transmission source. .
- the state management unit 53 determines the terminal management DB 5003 (see FIG. 12). ) In the terminal management table, both of the field portions of the operation state of the records each including the terminal ID “01aa” and the terminal ID “01db” are changed to “busy” (step S43). In this state, the request source terminal (terminal 10aa) and the destination terminal (terminal 10db) have not started a call, but are in a calling state. Therefore, when another terminal 10 tries to make a call with the request source terminal (terminal 10aa) or the destination terminal (terminal 10db), a notification sound or display indicating a so-called busy state is output.
- the session management unit 57 shown in FIG. 9 generates a selection session ID used to execute a session for selecting the relay device 30 (step S44).
- the session management unit 57 then stores the selection session ID “se1” generated in step S44 and the terminal ID “01aa” of the request source terminal (terminal 10aa) in the session management DB 5005 (see FIG. 14) of the storage unit 5000.
- the terminal ID “01db” of the destination terminal (terminal 10db) are stored and managed in association with each other (step S45).
- the transmission / reception unit 51 shown in FIG. 7 transmits the relay device selection request information to the destination terminal (terminal 10db) via the communication network 2 (step S46).
- This relay device selection request information includes the priority order list of the relay device received in step S42, the terminal ID “01aa” of the request source terminal (terminal 10aa), and the selection session ID “se1”. Yes.
- the terminal 10db can receive the relay device selection request information and the IP address “1.1.1.2” of the management system 50 that is the transmission source of the relay device selection request information.
- FIG. 18 various types of management information are transmitted and received through the management information session sei shown in FIG.
- the selection unit 16 of the destination terminal receives the priority order list of the relay device on the request source terminal (terminal 10aa) side received in step S46, and the relay device on the local terminal side that is the destination terminal (terminal 10db) On the basis of the priority list, one relay device 30 that finally relays image data and sound data in a video conference call is selected (step S65).
- step S65 the processing in step S65 will be described in more detail with reference to FIGS. 7 reads out the priority list (see FIG. 9B) of the own terminal (terminal 10db) from the storage unit 1000 (step S65-1). Then, the summation unit 16a of the selection unit 16 shown in FIG. 8 includes the priority list (see FIG. 9A) of the request source terminal (terminal 10aa) received in step S46, and the own terminal (terminal). Based on the priority list of 10 db) (see FIG. 9B), the priority is derived for each relay device ID to derive the total priority (step S65-2).
- the determination unit 16b of the selection unit 16 determines whether there is one relay device ID having the highest total priority (step S65-3).
- the total priority of the relay device ID “111a” is “10”
- the total priority of the relay device ID “111b” is “16”
- the total priority of the relay device ID “111c” is “8”.
- the total priority in the relay device ID” 111d is” 10 ". Therefore, the determination unit 16b determines that the relay apparatus ID having the highest priority is only one “111b”.
- step S65-3 when it is determined in step S65-3 that there is only one (YES), the determination unit 16c performs the relay that actually uses the relay device indicated by the relay device ID having the highest priority.
- the device is determined (step S65-4).
- the relay device 30b indicated by the relay device ID “111b” is determined.
- step S65-3 determines whether the number is not one (NO)
- the determination unit 16c randomly (arbitrarily) selects one of the plurality of relay device IDs having the highest priority.
- the relay device indicated by the narrowed-down relay device ID is determined as the relay device to be actually used (step S65-5).
- the destination terminal (terminal 10db) transmits selection information indicating that the relay device 30b has been selected from the transmission / reception unit 11 to the management system 50 via the communication network 2 (step S66).
- the selection information includes the session ID “se1” and the relay device ID “111b” of the selected relay device 30b.
- the management system 50 can interpret that the relay device 30b has been selected in the execution of the session with the session ID “se1”, and the IP address “1” of the destination terminal (terminal 10db) that is the transmission source of the selection information. .3.2.4 "can be received.
- the session management unit 57 of the management system 50 finally adds 1 to the field part of the relay device ID of the record including the session ID “se1” in the session management table of the session management DB 5005 (see FIG. 14).
- the relay device ID “111a” of the selected relay device 30b is stored and managed (step S67).
- the transmission / reception unit 51 of the management system 50 transmits relay start request information indicating a request to start relaying to the relay device 30b via the communication network 2 (step S68).
- the relay start request information includes the IP addresses (“1.2.1.3” and “1.3.2.4”) of the request source terminal (terminal 10aa) and the destination terminal (terminal 10db) to be relayed. include.
- the relay device 30b can interpret that the relay device 30b as its own device has been selected, three image data of low resolution, medium resolution, and high resolution between the terminals (10aa, 10db), In addition, a session for calling the sound data is established (step S69). Therefore, the terminals (10aa, 10db) can start a video conference call.
- the request source terminal receives the image data of the subject imaged by the imaging unit 14a and the sound input by the sound input unit 15a by the image / sound data session sed shown in FIG. Sound data is transmitted from the transmission / reception unit 11 to the relay device 30b via the communication network 2 (step S81).
- high-quality image data consisting of three low resolution, medium resolution, and high resolution shown in FIGS. 3A, 3B, and 3C, and sound data are transmitted.
- the transmission / reception unit 31 receives the image data and the sound data of the three resolutions. Then, the data quality confirmation unit 33 searches the change quality management DB 3001 (see FIG. 10) using the IP address “1.3.2.4” of the destination terminal (terminal 10db) as a search key, and the corresponding relay image By extracting the image quality of the data, the image quality of the image data to be relayed is confirmed (step S82). In the present embodiment, since the image quality of the confirmed image data is “high image quality” and is the same as the image quality of the image data received by the transmission / reception unit 31, the relay device 30 b uses the image / sound data session sed.
- the image data with the same image quality and the sound data with the same sound quality are transferred to the destination terminal (terminal 10db) (step S83).
- the destination terminal (terminal 10db) receives the high-quality image data and the sound data including the low resolution, the medium resolution, and the high resolution at the transmission / reception unit 11.
- the display control unit 17 can combine the three image quality image data to display an image on the display 120, and the sound output unit 15b can output a sound based on the sound data.
- the delay detection unit 18 of the terminal 10db detects the reception delay time of the image data received by the transmission / reception unit 11 at regular time intervals (for example, every second) (step S84). In the present embodiment, the description will be continued below assuming that the delay time is 200 (ms).
- the transmission / reception unit 11 of the destination terminal sends delay information indicating the delay time “200 (ms)” to the management system 50 via the communication network 2 by the management information session sei shown in FIG. Transmit (step S85).
- the management system 50 can grasp the delay time and the IP address “1.3.2.4” of the terminal 10db that is the transmission source of the delay information.
- the delay time management unit 60 of the management system 50 searches the terminal management DB 5003 (see FIG. 12) using the IP address “1.3.2.4” of the destination terminal (terminal 10db) as a search key. Then, the corresponding terminal ID “01db” is extracted. Furthermore, the delay time management unit 60, in the session management table of the session management DB 5005 (see FIG. 14), displays the delay time “indicated by the delay information” in the field of the delay time in the record of the terminal ID “01db”. 200 (ms) "is stored and managed (step S86).
- the quality determination unit 58 searches the quality management DB 5007 (see FIG. 15) using the delay time “200 (ms)” as a search key, and extracts the image quality “medium image quality” of the corresponding image data.
- the image quality is determined as “medium image quality” (step S87).
- the transmission / reception unit 51 extracts the IP address of the relay device ID “111b” associated with the terminal ID “01db” from the storage unit 5000 in the session management table of the session management DB (see FIG. 14) (Ste S88).
- the IP address of each relay device ID is stored in the storage unit 5000 in advance.
- the transmission / reception unit 51 transmits the quality “medium image quality” of the image data determined in step 87 to the relay apparatus 30b via the communication network 2 by the management information session sei shown in FIG. Information is transmitted (step S89).
- the quality information includes the IP address “1.3.2.4” of the destination terminal (terminal 10db) used as the search key in step S86.
- the change quality management unit 34 stores the IP address “1.3.2.4” of the destination terminal 10 (here, the terminal 10db) in the change quality management DB 3001 (see FIG. 10).
- the image quality “medium image quality” of the relayed image data is stored and managed in association with each other (step S90).
- the terminal 10aa continues to the relay device 30b through the image / sound data session sed in the same manner as in the above step S81, and the high-quality image data consisting of three of low resolution, medium resolution, and high resolution, and Sound data is transmitted (step S91).
- the data quality confirmation unit 33 uses the IP address “1.3.2.4” of the destination terminal (terminal 10db) as a search key to change the quality management DB 3001 ( 10) and the image quality “medium image quality” of the corresponding image data to be relayed is extracted to check the image quality of the image data to be relayed (step S92).
- the data quality changing unit 35 The image quality of the image data is changed by suppressing the image quality from “high image quality” to “medium image quality” (step S93).
- the image / sound data session sed changes the image data in which the image quality of the image data is changed to “medium image quality” and the sound quality of the sound to the terminal 10 db via the communication network 2.
- the sound data that has not been transmitted is transmitted (step S94).
- the destination terminal (terminal 10db) receives the image data and sound data of medium quality composed of two of low resolution and medium resolution in the transmission / reception unit 11.
- the display control unit 17 can combine the two resolution image data to display an image on the display 120, and the sound output unit 15b can output a sound based on the sound data.
- the relay device 30b changes the quality of the image and gives a strange feeling to the person participating in the video conference. Can not be.
- the relay device 30, the management system 50, the program providing system 90, and the maintenance system 100 in the above embodiment may be constructed by a single computer, or may be arbitrarily assigned by dividing each unit (function or means). It may be constructed by a plurality of computers.
- the program transmitted by the program providing system 90 may be transmitted by dividing it into a plurality of modules. It may be transmitted.
- a plurality of modules may be divided and transmitted from each computer.
- a recording medium such as a CD-ROM storing a terminal program, a relay device program, or a transmission management program of each of the above embodiments, an HD 204 storing these programs, and a program including the HD 204
- the providing system 90 is used when the terminal program, the relay device program, and the transmission management program are provided to a user or the like as a program product (Program Product) either domestically or abroad.
- the image quality of the image data relayed by the relay device 30 using the changed quality management table shown in FIG. 10 and the quality management table shown in FIG. Although it was managed by focusing on the resolution of the image of the data, it is not limited to this, and other examples of quality include the depth of image quality of the image data, the sampling frequency in the sound of the sound data, the bit length in the sound of the sound data You may manage it paying attention to.
- the sound data may be transmitted / received by being divided into three types of resolution data (high resolution, medium resolution, and low resolution).
- the reception date and time are managed, but the present invention is not limited to this, and at least the reception time of the reception date and time may be managed.
- the IP address of the relay device is managed by the storage unit 5000 and the IP address of the terminal is managed by the terminal management DB (see FIG. 12), but the present invention is not limited to this.
- each FQDN (FullyFullQualified Domain Name) may be managed.
- an IP address corresponding to the FQDN is acquired by a known DNS (Domain (Name System) server.
- “relay device specifying information for specifying the relay device 30 in the communication network 2” “relay device connection destination information indicating a connection destination to the relay device 30 on the communication network 2” or “communication It may be expressed as “relay device destination information indicating a destination to the relay device 30 on the network 2”.
- “terminal specifying information for specifying the terminal 10 in the communication network 2” but also “terminal connection destination information indicating a connection destination to the terminal 10 on the communication network 2” or “on the communication network 2 It may be expressed as “terminal destination information indicating a destination to the terminal 10”.
- a video conference terminal is described as an example of a transmission terminal.
- a telephone system such as an IP (Internet Protocol) telephone or an Internet telephone may be used.
- IP Internet Protocol
- a smart phone, a mobile telephone, a car navigation terminal, a wearable computer, or a game machine may be sufficient.
- the wearable computer includes a wristwatch, a head mounted display, and the like.
- image data and sound data have been described as an example of content data.
- touch data may be used.
- the feeling that the user touched on one terminal side is transmitted to the other terminal side.
- the content data may be smell data.
- the odor (odor) on one terminal side is transmitted to the other terminal side.
- the content data may be at least one of image data, sound data, tactile data, and olfactory data.
- the present invention is not limited to this. It may be used for presentation.
- the present invention is not limited to this, and a user ID for identifying the user may be used.
Abstract
Description
図1は本発明の一実施形態に係る伝送システムの構成を示す図である。図2は伝送システムにおけるデータ通信を説明するための図である。図3A低解像度の画像データの画質を示す図である。図3Bは中解像度の画像データの画質を示す図である。図3Cは高解像度の画像データの画質を示す図である。
以下に、本実施形態による端末10(以下、「通話端末10」とも称する)のハードウェア構成を説明する。図4は、本実施形態による通話端末10の斜視図である。図4に示されているように、通話端末10は、筐体1100、アーム1200、及びカメラハウジング1300を備えている。筐体1100の前側壁面1110には、複数の吸気孔によって形成された吸気面(図示せず)が設けられている。筐体1100の後側壁面1120には、複数の排気孔が形成された排気面1121が設けられている。これにより、筐体1100に内蔵された冷却ファンを駆動することで、吸気面を介して通話端末10の後方の外気が筐体1100内に取り込まれ、筐体1100内の空気を排気面1121を介して通話端末10の後方へ排気することができる。筐体1100の右側壁面1130には、収音用孔1131が形成されている。収音用孔1131を介して、後述する内蔵型のマイク114によって音、物音、雑音等の音を収音することができる。
以下に、本実施形態の機能構成について説明する。図7は、本実施形態による伝送システム1を構成する各端末、装置及びシステムの機能ブロック図である。図7において、端末10、中継装置30、及び管理システム50が、通信ネットワーク2を介してデータ通信することができるように接続されている。また、図1に示されているプログラム提供システム90は、テレビ会議の通信において直接関係しないため、図7では省略されている。
端末10は、送受信部11、操作入力受付部12、ログイン要求部13、撮像部14、音入力部15a、音出力部15b、選択部16、表示制御部17、遅延検出部18、及び記憶・読出処理部19を有している。これら各部は、図5に示されている各構成要素のいずれかが、フラッシュメモリ104からRAM103上に展開された端末用プログラムに従ったCPU101からの命令によって動作することで実現される機能、又は手段である。端末10は、図5に示されているRAM103、及び図5に示されているフラッシュメモリ104によって構成される記憶部1000を有している。
図5及び図7を用いて、端末10の各機能構成について詳細に説明する。以下では、図5に示されている各構成要素のうち、端末10の各機能構成を実現させるための主な構成要素との関係も説明する。
判断部16bは、各合計優先度のうち一番高い値の合計優先度が1つであるかを判断する。
中継装置30は、送受信部31、状態検知部32、データ品質確認部33、変更品質管理部34、データ品質変更部35、及び記憶・読出処理部39を有している。これら各部は、図6に示されている各構成要素のいずれかが、HD204からRAM203上に展開された中継装置用プログラムに従ったCPU201からの命令によって動作することで実現される機能又は手段である。中継装置30は、図6に示されているRAM203、及び/又は図6に示されているHD204によって構成される記憶部3000を有している。
記憶部3000は、図10に示されているような変更品質管理テーブルによって構成されている変更品質管理DB(Data Base)3001を有する。変更品質管理テーブルでは、画像データの中継先(宛先)としての端末30のIPアドレス、及びこの中継先に中継装置30が中継する画像データの画質が関連付けられて管理される。
中継装置30の各機能構成について詳細に説明する。以下では、図6に示されている各構成要素のうち、中継装置30の各機能構成を実現させるための主な構成要素との関係も説明する。
管理システム50は、送受信部51、端末認証部52、端末抽出部54、端末状態取得部55、セッション管理部57、品質決定部58、記憶・読出処理部59、及び遅延時間管理部60を有している。これら各部は、図6に示されている各構成要素のいずれかが、HD204からRAM203上に展開された管理システム用プログラムに従ったCPU201からの命令によって動作することで実現される機能又は手段である。管理システム50は、図6に示されているHD204により構成される記憶部5000を有している。
更に、記憶部5000は、図11に示されているような認証管理テーブルによって構成されている認証管理DB5002を有する。認証管理テーブルでは、管理システム50によって管理される全ての端末10の各端末IDに対して、各パスワードが関連付けられて管理される。例えば、図11に示されている認証管理テーブルは、端末10aaの端末IDは「01aa」で、パスワードは「aaaa」であることを示している。
記憶部5000は、図12に示されているような端末管理テーブルによって構成されている端末管理DB5003を有する。端末管理テーブルでは、各端末10の端末ID毎に、各端末10を宛先とした場合の宛先名、各端末10の稼動状態、後述のログイン要求情報が管理システム50で受信された受信日時、及び端末10のIPアドレスが関連付けられて管理される。例えば、図12に示されている端末管理テーブルは、端末IDが「01aa」の端末10aaは、端末名が「日本 東京事業所 AA端末」で、稼動状態が「ONライン(通話可能)」で、管理システム50でログイン要求情報が受信された日時が「2009年11月10日の13時40分」で、この端末10aaのIPアドレスが「1.2.1.3」であることを示している。
記憶部5000は、図13に示されているような宛先リスト管理テーブルによって構成されている宛先リスト管理DB5004を有する。宛先リスト管理テーブルでは、テレビ会議における通話の開始を要求する要求元端末の端末IDに対して、宛先端末の候補として登録されている宛先端末の端末IDが全て関連付けられて管理される。例えば、図13に示されている宛先リスト管理テーブルは、端末IDが「01aa」である要求元端末(端末10aa)からテレビ会議における通話の開始を要求することができる宛先端末(端末10db)の候補は、端末IDが「01ab」の端末10ab、端末IDが「01ba」の端末10ba、及び端末IDが「01bb」の端末10bb等であることを示している。宛先端末の候補は、任意の要求元端末から管理システム50に対する追加又は削除の要請により、追加又は削除されることで更新される。
記憶部5000は、図14に示されているようなセッション管理テーブルによって構成されているセッション管理DB5005を有する。セッション管理テーブルでは、中継装置30を選択するためのセッションの実行に用いられる選択用セッションID毎に、画像データ及び音データの中継に使用される中継装置30の中継装置ID、要求元端末の端末ID、宛先端末の端末ID、宛先端末において画像データが受信される際の受信の遅延時間(ms)、及びこの遅延時間が示されている遅延情報を宛先端末から送られて来て管理システム50で受信された受信日時が関連付けられて管理される。例えば、図14に示されているセッション管理テーブルは、選択用セッションID「se1」を用いて実行されたセッションで選択された中継装置30b(中継装置ID「111b」)は、端末IDが「01aa」の要求元端末(端末10aa)と、端末IDが「01db」の宛先端末(端末10db)との間で、画像データ及び音データを中継しており、宛先端末(端末10db)において「2009年11月10日の14時00分」時点における画像データの遅延時間が200(ms)であることを示している。2つの端末10の間でテレビ会議を行う場合には、上記宛先端末ではなく要求元端末から送信されてきた遅延情報に基づいて、遅延情報の受信日時を管理してもよい。但し、3つ以上の端末10の間でテレビ会議を行う場合には、画像データ及び音データの受信側の端末10から送信されてきた遅延情報に基づいて、遅延情報の受信日時を管理する。
記憶部5000は、図15に示されているような品質管理テーブルによって構成されている品質管理DB5007を有する。品質管理テーブルでは、要求元端末又は宛先端末における画像データの遅延時間(ms)が長い程、中継装置30で中継させる画像データの画質を下げるように、画像データの遅延時間と画像データの画質(画像の品質)とが関連付けられて管理される。
管理システム50の各機能構成について詳細に説明する。以下では、図6に示されている各構成要素のうち、管理システム50の各機能構成を実現させるための主な構成要素との関係も説明する。
次に、図16乃至図20を用いて、本実施形態に係る伝送システム1における処理方法を説明する。図16は、端末間で通話を開始する準備段階の処理を示したシーケンス図である。図17は、中継装置30を絞り込む処理を示したシーケンス図である。図18は、端末10が中継装置30を選択する処理を示したシーケンス図である。図19は、端末で中継装置30を選択する処理を示したフローチャートである。図20は、端末間で画像データ及び音データを送受信する処理を示したシーケンス図である。
以上説明したように本実施形態によれば、自端末側の優先順位リストだけでなく、他の伝送端末側の優先順位リストを考慮して中継装置を選択するため、両伝送端末で通信する場合に、バランスの取れた高品質のコンテンツデータを送受信することができる。
上記実施形態における中継装置30、管理システム50、プログラム提供システム90、及びメンテナンスシステム100は、単一のコンピュータによって構築されてもよいし、各部(機能又は手段)を分割して任意に割り当てられた複数のコンピュータによって構築されていてもよい。また、プログラム提供システム90が単一のコンピュータによって構築されている場合には、プログラム提供システム90によって送信されるプログラムは、複数のモジュールに分けて送信されるようにしてもよいし、分けないで送信されるようにしてもよい。更に、プログラム提供システム90が複数のコンピュータによって構築されている場合には、複数のモジュールが分けられた状態で、各コンピュータから送信されるようにしてもよい。
10 伝送端末
11 送受信部
16 選択部
16a 合計部
16b 判断部
16c 決定部
17 表示制御部
18 遅延検出部
30 中継装置
31 送受信部
32 状態検知部
33 データ品質確認部
34 変更品質管理部
35 データ品質変更部
50 管理システム
51 送受信部
52 端末認証部
53 状態管理部
54 端末抽出部
55 端末状態取得部
57 セッション管理部
58 品質決定部
59 記憶・読出処理部
60 遅延時間管理部
70 ルータ
90 プログラム提供システム
100 メンテナンスシステム
1000 記憶部
3000 記憶部
3001 変更品質管理DB
5000 記憶部
5002 認証管理DB
5003 端末管理DB
5004 宛先リスト管理DB
5005 セッション管理DB
5007 品質管理DB
Claims (11)
- 複数の中継装置のいずれか一つを介してコンテンツデータを送受信するよう構成された伝送端末であって、
前記複数の中継装置を利用する際のそれぞれの利用の優先度を示す第1の優先度情報を記憶する記憶手段と、
他の伝送端末から送信され、当該他の伝送端末が前記中継装置を利用する際の前記中継装置のそれぞれの利用の優先度を示す第2の優先度情報を受信する受信手段と、
前記第1及び第2の優先度情報に基づいて、前記中継装置のうちの一つを、利用する中継装置として選択する選択手段と、
を有する伝送端末。 - 請求項1に記載の伝送端末であって、
前記第1の優先度情報は、前記中継装置のそれぞれを識別するための中継装置識別情報と、前記中継装置のそれぞれの利用の優先度とを関連付けて示しており、
前記第2の優先度情報は、前記中継装置のそれぞれを識別するための中継装置識別情報と、前記中継装置のそれぞれの利用の優先度とを関連付けて示している、伝送端末。 - 請求項2に記載の伝送端末であって、
前記選択手段は、
前記中継装置識別情報毎に、前記第1の優先度情報における前記優先度の一つと前記第2の優先度情報における前記優先度の一つとを合計して合計優先度を算出する合計手段と、
前記複数の中継装置識別情報のうち、前記合計優先度のうち一番高い値の合計優先度が算出された中継装置識別情報を前記選択に用いる中継装置識別情報として決定する決定手段と
を有する、伝送端末。 - 請求項3に記載の伝送端末であって、
前記選択手段は、一番高い値の合計優先度に対応する中継装置が1つであるかを判断する判断手段を有し、
一番高い値の合計優先度に対応する中継装置が1つでないと判断された場合には、前記決定手段は、前記一番高い値の合計優先度に対応する複数の中継装置のうち、任意の一つの中継装置に係る中継装置識別情報を前記選択に用いる中継装置識別情報として決定する、伝送端末。 - 請求項1乃至4のうちいずれか一項に記載の伝送端末であって、
前記伝送端末は、テレビ会議端末、スマートフォン、携帯電話機、カーナビゲーション端末、ウェアラブルコンピュータ、及びゲーム機のうちの一つである、伝送端末。 - 請求項1乃至4のうちいずれか一項に記載の伝送端末と、
前記複数の中継装置と、
を有する、伝送システム。 - 複数の中継装置のいずれか一つを介してコンテンツデータを送受信するよう構成された伝送端末が利用する中継装置を選択する選択方法であって、
前記伝送端末が前記複数の中継装置を利用する際のそれぞれの利用の優先度を示す第1の優先度情報を生成し、
他の伝送端末が前記中継装置を利用する際の前記中継装置のそれぞれの利用の優先度を示す第2の優先度情報を前記他の伝送端末から受信し、
前記第1及び第2の優先度情報に基づいて、前記中継装置のうちの一つを、利用する中継装置として選択すること
を含む選択方法。 - 請求項7に記載の選択方法であって、
前記第1の優先度情報は、前記中継装置のそれぞれを識別するための中継装置識別情報と、前記中継装置のそれぞれの利用の優先度とを関連付けて示しており、
前記第2の優先度情報は、前記中継装置のそれぞれを識別するための中継装置識別情報と、前記中継装置のそれぞれの利用の優先度とを関連付けて示している、選択方法。 - 請求項8に記載の伝送端末であって、
前記選択するステップは、
前記中継装置識別情報毎に、前記第1の優先度情報における前記優先度の一つと前記第2の優先度情報における前記優先度の一つとを合計して合計優先度を算出し、
前記複数の中継装置識別情報のうち、前記合計優先度のうち一番高い値の合計優先度が算出された中継装置識別情報を前記選択に用いる中継装置識別情報として決定する
ことを含む選択方法。 - 請求項9に記載の選択方法であって、
前記選択するステップは、一番高い値の合計優先度に対応する中継装置が1つであるかを判断し、
一番高い値の合計優先度に対応する中継装置が1つでないと判断された場合には、前記決定するステップは、前記一番高い値の合計優先度に対応する複数の中継装置のうち、任意の一つの中継装置に係る中継装置識別情報を前記選択に用いる中継装置識別情報として決定する、選択方法。 - コンピュータに請求項6乃至10のうちいずれか一項に記載の選択方法を実行させるプログラムを格納した、コンピュータ読み取り可能な非一時的記録媒体。
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Citations (1)
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---|---|---|---|---|
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---|---|---|---|---|
US8885008B2 (en) * | 2009-12-25 | 2014-11-11 | Ricoh Company, Limited | Transmission management system, transmission system, computer program product, program providing system, and maintenance system |
JP5655499B2 (ja) * | 2009-12-25 | 2015-01-21 | 株式会社リコー | 伝送管理システム、伝送システム、伝送管理用プログラム、プログラム提供システム、及びメンテナンスシステム |
CN102469015B (zh) * | 2010-11-17 | 2016-04-13 | 中兴通讯股份有限公司 | 实现中继选择的方法及装置、系统 |
JP5310824B2 (ja) * | 2011-11-10 | 2013-10-09 | 株式会社リコー | 伝送管理装置、プログラム、伝送管理システムおよび伝送管理方法 |
JP5938927B2 (ja) * | 2012-02-06 | 2016-06-22 | 日本電気株式会社 | 遠隔操作システム、飛翔体の遠隔操作システム、遠隔操作方法、及び飛翔体の遠隔操作方法 |
JP6074915B2 (ja) * | 2012-05-18 | 2017-02-08 | 株式会社リコー | 伝送管理システム、伝送システム、伝送管理方法、及び伝送管理システム用プログラム |
CN103475580B (zh) * | 2013-09-26 | 2016-08-24 | 中国科学技术大学苏州研究院 | 车联网中基于功率控制技术的最优中继选择方法 |
US10873895B2 (en) * | 2014-12-19 | 2020-12-22 | Samsung Electronics Co., Ltd. | Apparatus and method for providing relay selection in device-to-device communication system |
-
2015
- 2015-03-25 CN CN201580025393.4A patent/CN106464839A/zh active Pending
- 2015-03-25 JP JP2016511580A patent/JP6327338B2/ja not_active Expired - Fee Related
- 2015-03-25 EP EP15773449.2A patent/EP3128746A4/en not_active Ceased
- 2015-03-25 WO PCT/JP2015/059121 patent/WO2015151958A1/ja active Application Filing
-
2016
- 2016-09-29 US US15/280,531 patent/US20170019832A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008225619A (ja) * | 2007-03-09 | 2008-09-25 | Konica Minolta Holdings Inc | 分散型情報共有サーバシステム |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117354455A (zh) * | 2023-12-04 | 2024-01-05 | 国网吉林省电力有限公司信息通信公司 | 一种分布式视频会议系统通信方法 |
CN117354455B (zh) * | 2023-12-04 | 2024-03-01 | 国网吉林省电力有限公司信息通信公司 | 一种分布式视频会议系统通信方法 |
Also Published As
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CN106464839A (zh) | 2017-02-22 |
US20170019832A1 (en) | 2017-01-19 |
EP3128746A1 (en) | 2017-02-08 |
EP3128746A4 (en) | 2017-03-22 |
JPWO2015151958A1 (ja) | 2017-04-13 |
JP6327338B2 (ja) | 2018-05-23 |
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