WO2013140439A1 - Playback device, playback system, method for controlling playback device, and program - Google Patents

Playback device, playback system, method for controlling playback device, and program Download PDF

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Publication number
WO2013140439A1
WO2013140439A1 PCT/JP2012/001930 JP2012001930W WO2013140439A1 WO 2013140439 A1 WO2013140439 A1 WO 2013140439A1 JP 2012001930 W JP2012001930 W JP 2012001930W WO 2013140439 A1 WO2013140439 A1 WO 2013140439A1
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WO
WIPO (PCT)
Prior art keywords
wireless
terminal
wireless terminal
connection
terminals
Prior art date
Application number
PCT/JP2012/001930
Other languages
French (fr)
Japanese (ja)
Inventor
松本　行弘
崇 眞下
孝 入沢
Original Assignee
パイオニア株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by パイオニア株式会社 filed Critical パイオニア株式会社
Priority to PCT/JP2012/001930 priority Critical patent/WO2013140439A1/en
Publication of WO2013140439A1 publication Critical patent/WO2013140439A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/08—Access security
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/0033—Recording/reproducing or transmission of music for electrophonic musical instruments
    • G10H1/0083—Recording/reproducing or transmission of music for electrophonic musical instruments using wireless transmission, e.g. radio, light, infrared
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
    • H04H60/04—Studio equipment; Interconnection of studios
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/78—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by source locations or destination locations
    • H04H60/80—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by source locations or destination locations characterised by transmission among terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/93—Wired transmission systems
    • H04H60/95—Wired transmission systems for local area
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video 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]
    • 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
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8106—Monomedia components thereof involving special audio data, e.g. different tracks for different languages
    • H04N21/8113—Monomedia components thereof involving special audio data, e.g. different tracks for different languages comprising music, e.g. song in MP3 format
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to a playback device, a playback system, a playback device control method, and a program for playing back while receiving transferred data (music data or video data) such as a DJ device.
  • DJ equipment for DJ (Disc Jockey) to perform music performance
  • DJ DJ (Disc Jockey) to perform music performance
  • it has two playback mechanisms and playback means for playing back music (content), and has two operation mechanisms and playback means.
  • Operation means for performing reproduction control of each piece of music to be reproduced, output means for outputting an output audio signal of the music reproduced by the reproduction means to an external speaker, etc., and reading means for reading music data from an information recording medium Is known (see Patent Document 1).
  • a plurality of music data read from the information recording medium is selectively distributed to each playback mechanism to play back each music.
  • the information recording medium includes an optical disk, a USB memory, and a PC (personal computer) connected via a USB cable.
  • wireless terminals such as a smart phone and PC which can be communicated wirelessly
  • wireless terminals such as a smart phone and PC which can be communicated wirelessly
  • music data is transferred from a wireless terminal via a wireless communication network, and the playback device receives and plays back the music data.
  • music data transferred simultaneously from multiple wireless terminals can be used for purposes such as changing DJs, accepting music requests, and simultaneous use of two wireless terminals by a user (for example, simultaneous use of a smartphone and a PC). It is required to be received and played back. For example, when changing DJ from user A to user B, each user performs music performance by transferring music data from his / her wireless terminal.
  • the reproduction apparatus of the present invention is a reproduction apparatus that can reproduce data while receiving data transferred from a plurality of wireless terminals, communication means connected to a wireless communication network for performing wireless communication with the wireless terminals, and wireless communication
  • a link establishing means for establishing a dedicated link with a wireless terminal for transferring data from the wireless terminal via the network, a connection restricting means for restricting connection of a predetermined number or more of wireless terminals via the dedicated link, and a dedicated link.
  • Terminal number display means for displaying the number of established wireless terminals.
  • the playback device control method of the present invention is a playback device control method capable of playback while receiving data transferred from a plurality of wireless terminals, and the playback device performs wireless communication for wireless communication with the wireless terminals.
  • a connection restriction step for restricting and a terminal number display step for displaying the number of wireless terminals for which a dedicated link has been established are executed.
  • the playback system of the present invention includes the playback device described above and a plurality of wireless terminals connected to the playback device via a wireless communication network, and each wireless terminal performs data transmission using an established dedicated link. And a data transfer means for transferring.
  • the connection limit is established by connecting to a wireless terminal through a dedicated link for data transfer, and the number of wireless terminals that have established a dedicated link is displayed. Accordingly, since the user can recognize (view) the number of connected wireless terminals, this serves as an index for the replacement of DJs and reception of music requests, and the replacement of DJs and reception of music requests can be appropriately performed.
  • any configuration capable of operating (connecting or disconnecting) the connection by the dedicated link from the playback device side can be used as the determination material.
  • connection for data transfer connection by dedicated link
  • the number of connected units is displayed, only the connection that strongly affects the transfer rate of data transfer is limited, and the information that strongly affects the transfer rate Only (number of terminals) can be displayed. Therefore, it is possible to more appropriately perform the change of DJ and the reception of the music request.
  • the “display the number of terminals” is configured, but the configuration is not limited to this as long as the configuration is “notified to the user of the number of terminals”.
  • the configuration may be such that the number of terminals is notified by a vibration function or sound output to headphones.
  • terminal list display means for displaying a terminal list of wireless terminals for which a dedicated link is established.
  • the replacement of the DJ and the reception of the music request can be performed more appropriately. For example, it is possible to confirm whether or not the own wireless terminal is connected through a dedicated link by referring to the terminal list when the DJ is changed. Therefore, after the change, it can be seen that the wireless terminal is not connected by a dedicated link, and it is possible to avoid deficiencies such as music being interrupted.
  • any configuration that can operate the connection by the dedicated link from the playback device side can be used as the determination material.
  • the terminal list includes information indicating the reproduction state of each wireless terminal.
  • the wireless terminal being reproduced can be recognized by referring to the reproduction state. Therefore, it is possible to avoid deficiencies such as replaying a wireless terminal that has been played once again.
  • any configuration that can operate the connection by the dedicated link from the playback device side can be used as the determination material.
  • a link disconnection unit that selects any wireless terminal in the terminal list and disconnects the dedicated link.
  • connection with the wireless terminal can be intentionally disconnected from the playback device side, by disconnecting the connection that is no longer necessary, the number of connections reaches the limited number, and a new wireless A situation in which the terminal cannot be connected can be avoided.
  • notification means for notifying a wireless terminal that cannot establish a dedicated link due to restrictions by the connection restriction means.
  • the wireless communication terminal further includes a permitted terminal setting unit configured to set a wireless terminal permitted to be connected, and the connection restriction unit authenticates the wireless terminal requested to connect, and a wireless terminal other than the wireless terminal set by the permitted terminal setting unit. It is preferable to limit the connections.
  • the program of the present invention causes a computer to execute each step in the above-described playback device control method.
  • This configuration allows a computer to execute the above control method simply by installing this program.
  • 1 is a system configuration diagram of a playback system according to an embodiment. It is the control block diagram which showed the control structure of the reproduction
  • This playback system is a system for DJs (Disc Jockey) to perform music performances (DJ play), and wireless terminals brought by participants at live houses etc. are wirelessly connected to playback devices that are stationary DJ devices. It is assumed that they are configured as such.
  • regeneration system has a function which displays the terminal number of the radio
  • the playback system SY includes a playback device 1 that is a DJ device, an external speaker 2 that is connected to the playback device 1 and outputs sound, and a plurality of wireless terminals that are wirelessly connected to the playback device 1. 3.
  • the playback device 1 and the plurality of wireless terminals 3 are connected via a wireless communication network NW such as Wi-Fi (registered trademark), and are configured to be able to communicate various data between each other.
  • NW such as Wi-Fi (registered trademark)
  • the playback device 1 is an integrated DJ device including a DJ player and a DJ mixer, and additionally has a DJ controller function. Further, various operating elements 32 (see FIG. 2) including a pair of left and right decks 11 are arranged on the upper surface of the reproducing apparatus 1. Further, four LED lamps 13 arranged on the left and right and a liquid crystal display 14 are arranged at the center upper part of the upper surface of the reproducing apparatus 1. Note that the playback apparatus 1 may be a DJ player or a DJ mixer. That is, the present invention can be applied to a DJ player and a DJ mixer.
  • the playback device 1 includes a wireless communication unit (communication means) 21, an operation unit 22, a playback processing unit 23, a voice input / output unit 24, a control unit 25, and an LED display unit 26. And a liquid crystal display unit 27.
  • the LED display unit 26 includes four LED lamps 13.
  • the liquid crystal display unit 27 includes the liquid crystal display 14.
  • the wireless communication unit 21 includes a wireless module 31 and connects to the wireless communication network NW to perform wireless communication with a plurality of wireless terminals 3 via the wireless communication network NW. Specifically, the wireless communication unit 21 exchanges data with each wireless terminal 3 and sequentially receives music data from each wireless terminal 3.
  • the music data transferred from each wireless terminal 3 is stored in a buffer memory 41 (described later) of the reproduction processing unit 23.
  • the music data can also be transferred in units of music, but in this embodiment, the music data is sequentially transferred in divided data units obtained by dividing the data in music units.
  • the operation unit 22 is for operating the playback device 1 and is configured by the various operators 32 described above. Specifically, it is used to perform music data reproduction processing, mix processing, or effect processing. Further, it is used when a dedicated link with the wireless terminal 3 described later is disconnected.
  • the reproduction processing unit 23 includes a buffer memory 41, two audio player modules 42, and a mix / effect module 43.
  • the buffer memory 41 temporarily stores music data transferred from each wireless terminal 3 and music data read from a recording medium (not shown) such as a USB memory.
  • Each audio player module 42 sequentially reads the music data from the buffer memory 41 in accordance with the operation of the operation unit 22 (deck 11), and inputs the music data to the mix / effect module 43 (playback processing).
  • the mix / effect module 43 performs mix processing or effect processing on the music data output from the two audio player modules 42 in accordance with the operation of the operation unit 22, and uses the processed music data (reproduced audio signal). Input to the voice input / output unit 24.
  • the audio input / output unit 24 includes various input / output terminals 46 such as an AV terminal and a USB terminal, and inputs / outputs audio signals to / from connected external devices. Specifically, the audio input / output unit 24 mainly outputs the processed music data (reproduced audio signal) output from the reproduction processing unit 23 to the external speaker 2.
  • the playback device 1 receives the music data transferred from each wireless terminal 3 by the wireless communication unit 21 and temporarily stores it in the buffer memory 41.
  • the audio player module 42 and the mix / effect module 43 perform reproduction processing, mix processing, and effect processing on the music data temporarily stored in the buffer memory 41, and the external speaker 2 through the audio input / output unit 24. Output to. That is, the playback device 1 is configured to be able to play back the music data or other music data while receiving the music data.
  • the control unit 25 includes a CPU (Central Processing Unit) 51, a RAM (Random Access Memory) 52, and a storage device 53.
  • the CPU 51 is a central processing unit that performs various types of processing related to the control of the playback device 1.
  • the RAM 52 is a volatile memory serving as a work area for the various arithmetic processes.
  • the storage device 53 is a non-volatile memory that stores a control program and control data for performing the various arithmetic processes and stores various applications including a dedicated link application on the playback device 1 side.
  • the CPU 51 activates the installed dedicated link application, thereby establishing a link establishment unit (link establishment unit) 61, a connection restriction unit (connection restriction unit) 62, an error notification unit (notification unit) 63, and a display control unit. 64 and a link cutting unit (link cutting means) 65.
  • the reproduction processing unit 23 and the control unit 25 are mounted on one main microcomputer.
  • the link establishment unit 61 establishes a dedicated link with each wireless terminal 3 via the wireless communication network NW in response to a connection request from each wireless terminal 3. Specifically, the link establishment unit 61 receives a connection request from the wireless terminal 3 and transmits a connection permission notification for permitting connection through the dedicated link to the wireless terminal 3.
  • This dedicated link is a link system for transferring music data from the wireless terminal 3 to the playback device 1 using the wireless communication network NW, and a system capable of operating (connecting / disconnecting) the connection from the playback device 1 side. It is. That is, the playback apparatus 1 uses this to control the transfer of music data from a plurality of wireless terminals 3.
  • the number of wirelessly connected terminals for which a dedicated link is established is referred to as “the number of wireless terminals 3 connected by a dedicated link” or simply “the number of connected terminals”.
  • the connection restriction unit 62 restricts the connection of five or more wireless terminals 3 using the dedicated link so that the number of wireless terminals 3 connected using the dedicated link is 4 or less. Specifically, the establishment (connection) of a dedicated link with a new wireless terminal 3 is permitted / rejected depending on whether the number of wireless terminals 3 connected by the dedicated link is less than four. More specifically, if the number of connected devices is less than 4, the link establishment unit 61 is allowed to transmit a connection permission notification to the wireless terminal 3. On the other hand, when the number of connected devices is 4, the transmission of the connection permission notification by the link establishing unit 61 is canceled and a connection rejection notification for rejecting the connection through the dedicated link is transmitted to the wireless terminal 3. Thereby, by restricting the connection of a predetermined number or more of wireless terminals 3 by the dedicated link, the number of music data transferred simultaneously from the plurality of wireless terminals 3 is limited, and the transfer rate is maintained at a predetermined threshold value or more.
  • the error notification unit 63 notifies the wireless terminal 3 that the dedicated link cannot be established due to the restriction by the connection restriction unit 62. Specifically, when the connection restriction unit 62 rejects the connection (transmits a connection rejection notification), the wireless communication unit 21 “cannot connect because the number of connected devices is full” to the wireless terminal 3 that refuses the connection. Send an error notification to that effect.
  • the display control unit 64 controls the LED display unit 26 and the liquid crystal display unit 27, and displays the number of terminals (number of connected devices) and the terminal list L of the wireless terminals 3 for which a dedicated link is established. That is, the display control unit 64 controls the LED display unit 26 to individually turn on / off the four LED lamps 13 and clearly indicate the number of connected wireless terminals 3 by the dedicated link. Further, the display control unit 64 controls the liquid crystal display unit 27 to display the terminal list L (see FIG. 1) of the wireless terminals 3 connected by the dedicated link on the liquid crystal display 14. As shown in FIG. 1, in the terminal list L, the terminal name of each wireless terminal 3 connected by a dedicated link is displayed, and the reproduction state of the wireless terminal 3 is displayed by a reproduction icon or a pause icon. As described above, the LED display unit 26 and the display control unit 64 constitute a terminal number display unit, and the liquid crystal display unit 27 and the display control unit 64 constitute a terminal list display unit.
  • the link disconnecting unit 65 disconnects the dedicated link with the target wireless terminal 3 in accordance with the operation of the operation unit 22. Specifically, the user receives an operation of selecting any one of the wireless terminals 3 in the terminal list L, transmits a link disconnection notification for disconnecting the dedicated link with the selected wireless terminal 3, and the wireless terminal 3 prohibits transfer of music data. Then, the wireless terminal 3 is removed from the terminal list L.
  • the wireless terminal 3 is a smartphone or a personal computer (tablet PC or notebook PC) having a wireless communication function, and includes a wireless communication mechanism 71, an operation mechanism 72, a display mechanism 73, and a control mechanism 74 that controls these. It is equipped with.
  • the wireless communication mechanism 71 is connected to the playback device 1 via the wireless communication network NW.
  • the operation mechanism 72 includes various operators such as a touch panel and performs various operations of the wireless terminal 3.
  • the display mechanism 73 has a display screen S such as a liquid crystal display and displays various types of information.
  • the control mechanism 74 is installed with a dedicated link application on the wireless terminal 3 side, and functions as a connection request transmission unit 81, a data transfer unit (data transfer unit) 82, and an error display unit 83 when activated.
  • the connection request transmitting unit 81 transmits a dedicated link connection request to the playback device 1 by the wireless communication mechanism 71.
  • the connection request is a signal for requesting connection through a dedicated link. In other words, it is a signal for confirming whether or not there is a vacancy in the number of connected wireless terminals 3 via the dedicated link.
  • the data transfer unit 82 When the data transfer unit 82 receives a connection permission notification from the playback device 1, the data transfer unit 82 controls the wireless communication mechanism 71 and transfers the music data to the playback device 1 through the established dedicated link.
  • the error display unit 83 receives the error notification from the playback device 1, the error display unit 83 displays an error message indicating that “the number of connected devices is full and cannot be connected” by the display mechanism 73.
  • connection control operation and data transfer operation of the dedicated link by the reproduction system SY will be described.
  • an operation performed between any one wireless terminal 3 and the playback apparatus 1 will be described.
  • These series of operations are performed in a state in which both dedicated link applications on the playback device 1 side and the wireless terminal 3 side are activated.
  • connection step After the playback device 1 is connected in advance to the wireless communication network NW with the one wireless terminal 3 and the playback device 1 and the first wireless terminal 3 are connected via the wireless communication network NW (connection step). It shall be performed in that state.
  • the one wireless terminal 3 transmits a connection request to the playback apparatus 1 by the connection request transmission unit 81 due to the connection instruction operation by the operation mechanism 72 (S1). For example, pressing the LINK connection button 86 on the menu screen as shown in FIG.
  • the connection restriction unit 62 determines whether or not the number of wireless terminals 3 connected by the dedicated link is less than four. (S3). If it is determined that the number of connections is four (S3: No), the connection restriction unit 62 and the error notification unit 63 return a connection rejection notification and the error notification to the wireless terminal 3 (connection restriction step). : S4).
  • the wireless terminal 3 receives the connection rejection notification and the error notification (S5: A)
  • the wireless terminal 3 stops the connection using the dedicated link (S6), and the error display unit 83 indicates that “the number of connected units is full and cannot be connected”. A message is displayed (S7). Thus, this operation is finished.
  • the playback device 1 when it is determined that the number of connected devices is less than 4 (S3: Yes), the playback device 1 returns a connection permission notification to the wireless terminal 3 by the link establishing unit 61 (S8). Then, a dedicated link with the wireless terminal 3 is established (link establishment step). Thereafter, the display control unit 64 updates the number of connected dedicated links and the display of the terminal list L, and displays the current number of connected terminals and the terminal list L (S9: terminal number display step).
  • the wireless terminal 3 when the wireless terminal 3 receives the connection permission notification (S5: B), the wireless terminal 3 shifts to an operation waiting state waiting for a music selection operation (S10). Then, upon receiving a music selection operation by the operation mechanism 72 (S10: Yes), the data transfer unit 82 sequentially transfers the selected music data to the playback apparatus 1 using the dedicated link (S11). For example, the music selection screen shown in FIG. 4B and the deck designation screen shown in FIG. 4C are displayed, and music is selected and associated with the left and right decks 11 and associated with each deck 11. Each piece of music data is transferred to the playback device 1 at the same time. Thus, this operation is finished.
  • the number of connected wireless terminals 3 with the dedicated link is displayed, so that the user can recognize (view) the number of connected wireless terminals 3 using the dedicated link. Therefore, this becomes an index for the change of DJ and reception of music requests, and the change of DJ and reception of music requests can be appropriately performed.
  • the connection for data transfer connection by dedicated link
  • the number of connected units is displayed, only the connection that strongly affects the transfer rate of data transfer is limited, and the information that strongly affects the transfer rate Only (number of terminals) can be displayed.
  • the terminal list L of the wireless terminals 3 with which the dedicated link is established it is possible to recognize the information of the connected wireless terminals 3 in more detail. Can be done. For example, by referring to the terminal list L when the DJ is changed, it can be confirmed whether or not the own wireless terminal 3 is connected by a dedicated link. Therefore, after the change, it can be understood that the wireless terminal 3 is not connected by a dedicated link, and it is possible to avoid deficiencies such as music being interrupted.
  • the information of the connected wireless terminal 3 can be recognized in more detail. Requests can be received more appropriately.
  • the wireless terminal 3 being reproduced can be recognized by referring to the reproduction state. Therefore, deficiencies such as replaying the wireless terminal 3 once replayed can be avoided.
  • the link disconnection unit 65 by having the link disconnection unit 65, the connection with the wireless terminal 3 through the dedicated link can be intentionally disconnected from the playback device 1 side. For this reason, it is possible to avoid a situation where the number of connected devices reaches the limit number (four in this embodiment) and the new wireless terminal 3 cannot be connected by disconnecting unnecessary connections. For example, when the DJ wireless terminal 3 after the DJ play is still connected by the dedicated link, or when the requesting user's wireless terminal 3 is still connected by the dedicated link, etc. By disconnecting, you can make room for the number of connections.
  • the wireless terminal 3 side can be connected due to the limitation of the number of connections or other factors (for example, communication failure). It can be easily grasped whether or not there was. Therefore, useless retries can be avoided on the wireless terminal 3 side.
  • any wireless terminal 3 can be connected by a dedicated link.
  • the CPU 51 of the playback device 1 functions as a permitted terminal setting unit (permitted terminal setting unit) 91 in addition to the units illustrated in FIG. 2 by starting the dedicated link application. To do.
  • the permission terminal setting unit 91 sets (registers) the permission terminal in advance in accordance with the setting operation by the operation unit 22.
  • connection restriction unit 62 authenticates the wireless terminal 3 for which a connection request has been made, and restricts the connection of the wireless terminals 3 other than the permitted terminal (transmits a connection rejection notification). This restricts the connection of the dedicated link only to the specific wireless terminal 3 or the specific human wireless terminal 3.
  • the present modification by restricting the connection of the wireless terminals 3 other than the permitted terminal, it is possible to prevent the outsider's wireless terminal 3 from connecting to the playback device 1 and pressing the number of connected terminals.
  • the connection of humans other than DJs can be restricted (rejected) by setting, it is possible to avoid that humans other than DJs connect and affect music performance.
  • setting the wireless terminal 3 that permits connection in advance and performing connection restrictions it is possible to change DJs and receive music requests on the spot (improvised, ad-lib), Stable music performance can be provided while maintaining a live feeling.
  • the number of connected wireless terminals 3 by the dedicated link is displayed by turning on / off the four LED lamps 13.
  • the present invention is not limited to this. It may be configured to display the number of connected devices.
  • the display device is not limited to display.
  • the playback device 1 may be provided with a vibration function unit to notify the number of connected devices using a vibration function.
  • the configuration may be such that the number of connected devices is notified by audio output to headphones connected to the playback device 1.
  • the notification means does not notify the number of connected devices per se, but notifies the user that the number of connected devices has reached the limit number (four in this embodiment) or that the limit number has been approached. May be.
  • the connection request is transmitted from the wireless terminal 3 side to the playback device 1 and the dedicated link is established due to this, but the connection request transmission is omitted and the number of connected devices is
  • the playback device 1 transmits a connection permission notification to one of the wireless terminals 3 wirelessly connected by the wireless communication network NW, regardless of whether or not there is a connection request, and establishes a dedicated link.
  • the wireless terminal 3 that transmits the connection permission notification can be selected from the wireless terminals 3 that are wirelessly connected by the wireless communication network NW.
  • the upper limit (restricted number) of connectable units is four, but the present invention is not limited to this. However, it is preferable that the number is such that the assumed transfer rate (transfer speed) does not exceed the reproduction speed (reproduction processing speed) of the music data.
  • the playback status of each wireless terminal 3 is displayed in the terminal list L.
  • the data transfer status of each wireless terminal 3 and the total number of transferred songs The number, the number of currently reproducible music pieces, and the like may be displayed.
  • the link number and the terminal name may be displayed in association with each other.
  • the four LED lamps 13 are associated with the link number, and the terminal name is displayed under each LED lamp 13. The structure to display may be sufficient.
  • the data to be transferred is music data
  • the present invention is applied to the playback device 1 of the audio equipment (DJ equipment) that plays back the music data.
  • the data to be transferred is video.
  • the present invention may be applied to the playback device 1 of video equipment (VJ equipment) that plays back video data.
  • the present invention may be applied to the playback apparatus 1 capable of playing back music data and video data.

Abstract

The present invention adequately enables changing of a DJ and reception of a music request. This playback device (1) is capable of playback while receiving data transferred from multiple wireless terminals (3), and is equipped with: a wireless communication unit (21) that connects to a wireless communication network (NW) for performing wireless communications with the wireless terminals (3); a link establishment section (61) that establishes dedicated links to the wireless terminals (3) in order to transfer music data from the wireless terminals (3) via the wireless communication network (NW); a connection restriction section (62) that restricts the connections via the dedicated links to a number of wireless terminals (3) that is greater than a predetermined number; and a terminal quantity display means (26, 64) that displays the number of wireless terminals (3) to which the dedicated links are established.

Description

再生装置、再生システム、再生装置の制御方法およびプログラムREPRODUCTION DEVICE, REPRODUCTION SYSTEM, REPRODUCTION DEVICE CONTROL METHOD, AND PROGRAM
　本発明は、ＤＪ機器等の、転送されたデータ（楽曲データや映像データ）を受け取りつつ再生する再生装置、再生システム、再生装置の制御方法およびプログラムに関するものである。 The present invention relates to a playback device, a playback system, a playback device control method, and a program for playing back while receiving transferred data (music data or video data) such as a DJ device.
　従来、ＤＪ（Ｄｉｓｃ　Ｊｏｃｋｅｙ）が音楽パフォーマンスを行うための再生装置（ＤＪ機器）として、２つの再生機構を有すると共に楽曲（コンテンツ）を再生する再生手段と、２つの操作機構を有すると共に再生手段で再生される各楽曲の再生制御を行う操作手段と、再生手段により再生された楽曲の出力オーディオ信号を外部スピーカー等に出力する出力手段と、情報記録媒体から楽曲データを読み取る読み取り手段と、を備えたものが知られている（特許文献１参照）。この再生装置では、情報記録媒体から読み取った複数の楽曲データを、各再生機構に選択的に振り分けて各楽曲を再生する。なお、情報記録媒体としては、光ディスクやＵＳＢメモリー、ＵＳＢケーブルを介して接続されたＰＣ（パーソナルコンピューター）がある。 Conventionally, as a playback device (DJ equipment) for DJ (Disc Jockey) to perform music performance, it has two playback mechanisms and playback means for playing back music (content), and has two operation mechanisms and playback means. Operation means for performing reproduction control of each piece of music to be reproduced, output means for outputting an output audio signal of the music reproduced by the reproduction means to an external speaker, etc., and reading means for reading music data from an information recording medium Is known (see Patent Document 1). In this playback apparatus, a plurality of music data read from the information recording medium is selectively distributed to each playback mechanism to play back each music. The information recording medium includes an optical disk, a USB memory, and a PC (personal computer) connected via a USB cable.
特許第４８８００３４号公報Japanese Patent No. 4880034
　ところで、従来の再生装置において、情報記録媒体として、スマートフォンや無線通信可能なＰＣ等の無線端末を用いることが求められている。すなわち、無線端末から無線通信ネットワークを介して楽曲データを転送し、再生装置は、これを受け取って再生する構成である。加えて、ＤＪの交代や楽曲リクエストの受付、１ユーザーによる２台の無線端末の同時使用（例えばスマートフォンおよびＰＣの同時使用）等の用途から、複数台の無線端末から同時に転送される楽曲データを受け取り、再生可能な状態にすることが求められている。例えば、ユーザーＡからユーザーＢにＤＪを交代する場合、それぞれのユーザーは、自分の無線端末から楽曲データを転送して、音楽パフォーマンスを行うことになる。そして、ＤＪの交代時には、ユーザーＡの楽曲データと、ユーザーＢの楽曲データを繋げて楽曲の切れ目をなくす必要があるため、少なくとも２台の無線端末から同時に転送される楽曲データを受け取り、再生可能とすることが求められている。
　しかしながら、「複数台の無線端末から同時に転送される楽曲データを受け取り、再生可能な状態にする」構成を従来の再生装置に適用すると、接続台数によって転送レートが下がり、楽曲データの転送が遅延してしまうという問題が生じた。この種の再生装置では、転送される楽曲データを受け取りながら再生することが基本であるため、データ転送の遅延により、楽曲データの再生が滞ってしまう。これでは、音楽が途切れてしまい、音楽パフォーマンス（ＤＪプレイ）に支障をきたしてしまう。
　これに対し、無線端末の接続台数を制限することを考えたが、かかる場合、ユーザーが接続台数を認識することができないため、ユーザーがＤＪの交代や楽曲リクエストの受付を適切に行うことができないという問題がある。例えば、無線端末の接続台数が制限台数に達している状態で、ユーザーがＤＪの交代や楽曲リクエストの受付を行ってしまうと、新たな無線端末からデータ転送が行うことができずに、不備が生じてしまう事態が想定される。 By the way, in the conventional reproducing | regenerating apparatus, it is calculated | required that wireless terminals, such as a smart phone and PC which can be communicated wirelessly, are used as an information recording medium. That is, music data is transferred from a wireless terminal via a wireless communication network, and the playback device receives and plays back the music data. In addition, music data transferred simultaneously from multiple wireless terminals can be used for purposes such as changing DJs, accepting music requests, and simultaneous use of two wireless terminals by a user (for example, simultaneous use of a smartphone and a PC). It is required to be received and played back. For example, when changing DJ from user A to user B, each user performs music performance by transferring music data from his / her wireless terminal. When the DJ is changed, it is necessary to connect the music data of user A and the music data of user B to eliminate the cuts between music, so that music data transferred from at least two wireless terminals can be received and played Is required.
However, when the configuration of “receive music data transferred simultaneously from multiple wireless terminals and make it ready for playback” is applied to a conventional playback device, the transfer rate decreases depending on the number of connected devices, and the transfer of music data is delayed. A problem arises. In this type of playback apparatus, playback is basically performed while receiving transferred music data. Therefore, playback of music data is delayed due to a delay in data transfer. As a result, the music is interrupted and the music performance (DJ play) is hindered.
On the other hand, we considered limiting the number of connected wireless terminals, but in such a case, the user cannot recognize the number of connected devices, and thus the user cannot properly perform the DJ change or the reception of the music request. There is a problem. For example, if a user changes DJ or accepts a music request when the number of connected wireless terminals reaches the limit, data transfer from a new wireless terminal cannot be performed, and there is a deficiency. It is assumed that this will happen.
　本発明は、ＤＪの交代や楽曲リクエストの受付を適切に行うことができる再生装置、再生システム、再生装置の制御方法およびプログラムを提供することを課題としている。 It is an object of the present invention to provide a playback device, a playback system, a playback device control method, and a program that can appropriately perform a DJ change and a music request reception.
　本発明の再生装置は、複数台の無線端末から転送されたデータを受け取りながら再生可能な再生装置であって、無線端末と無線通信を行うための無線通信ネットワークに接続する通信手段と、無線通信ネットワークを介して、無線端末からデータを転送するための無線端末との専用リンクを確立するリンク確立手段と、専用リンクによる所定数以上の無線端末の接続を制限する接続制限手段と、専用リンクが確立している無線端末の端末数を表示する端末数表示手段と、を備えたことを特徴とする。 The reproduction apparatus of the present invention is a reproduction apparatus that can reproduce data while receiving data transferred from a plurality of wireless terminals, communication means connected to a wireless communication network for performing wireless communication with the wireless terminals, and wireless communication A link establishing means for establishing a dedicated link with a wireless terminal for transferring data from the wireless terminal via the network, a connection restricting means for restricting connection of a predetermined number or more of wireless terminals via the dedicated link, and a dedicated link. Terminal number display means for displaying the number of established wireless terminals.
　本発明の再生装置の制御方法は、複数台の無線端末から転送されたデータを受け取りながら再生可能な再生装置の制御方法であって、再生装置は、無線端末と無線通信を行うための無線通信ネットワークに接続する接続ステップと、無線通信ネットワークを介して、無線端末からデータを転送するための無線端末との専用リンクを確立するリンク確立ステップと、専用リンクによる所定数以上の無線端末の接続を制限する接続制限ステップと、専用リンクが確立している無線端末の端末数を表示する端末数表示ステップと、を実行することを特徴とする。 The playback device control method of the present invention is a playback device control method capable of playback while receiving data transferred from a plurality of wireless terminals, and the playback device performs wireless communication for wireless communication with the wireless terminals. A connection step for connecting to the network, a link establishment step for establishing a dedicated link with the wireless terminal for transferring data from the wireless terminal via the wireless communication network, and connection of a predetermined number of wireless terminals or more by the dedicated link. A connection restriction step for restricting and a terminal number display step for displaying the number of wireless terminals for which a dedicated link has been established are executed.
　本発明の再生システムは、上記の再生装置と、再生装置に無線通信ネットワークを介して接続された複数台の無線端末と、を有し、各無線端末は、確立している専用リンクにより、データを転送するデータ転送手段を、備えたことを特徴とする。 The playback system of the present invention includes the playback device described above and a plurality of wireless terminals connected to the playback device via a wireless communication network, and each wireless terminal performs data transmission using an established dedicated link. And a data transfer means for transferring.
　これらの構成によれば、データ転送用の専用リンクにより無線端末と接続して接続制限を行うと共に、専用リンクが確立している無線端末の端末数を表示する。これにより、ユーザーが無線端末の接続台数を認識（視認）することができるため、これがＤＪの交代や楽曲リクエストの受付の指標となり、ＤＪの交代や楽曲リクエストの受付を適切に行うことができる。また、専用リンクによる接続を再生装置側から操作（接続や切断）可能な構成であれば、その判断材料として利用することができる。さらに、データ転送を行うための接続（専用リンクによる接続）のみを制限し、その接続台数を表示するので、データ転送の転送レートに強く影響する接続のみを制限し、転送レートに強く影響する情報（端末数）のみを表示することができる。よって、ＤＪの交代や楽曲リクエストの受付をより適切に行うことができる。なお、ここでは、「端末数を表示する」構成としたが、「端末数をユーザーに報知する」構成であれば、これに限るものではない。例えば、振動機能やヘッドフォンへの音声出力で、端末数を報知する構成であっても良い。 According to these configurations, the connection limit is established by connecting to a wireless terminal through a dedicated link for data transfer, and the number of wireless terminals that have established a dedicated link is displayed. Accordingly, since the user can recognize (view) the number of connected wireless terminals, this serves as an index for the replacement of DJs and reception of music requests, and the replacement of DJs and reception of music requests can be appropriately performed. In addition, any configuration capable of operating (connecting or disconnecting) the connection by the dedicated link from the playback device side can be used as the determination material. Furthermore, since only the connection for data transfer (connection by dedicated link) is limited and the number of connected units is displayed, only the connection that strongly affects the transfer rate of data transfer is limited, and the information that strongly affects the transfer rate Only (number of terminals) can be displayed. Therefore, it is possible to more appropriately perform the change of DJ and the reception of the music request. Note that, here, the “display the number of terminals” is configured, but the configuration is not limited to this as long as the configuration is “notified to the user of the number of terminals”. For example, the configuration may be such that the number of terminals is notified by a vibration function or sound output to headphones.
　上記の再生装置において、専用リンクが確立している無線端末の端末リストを表示する端末リスト表示手段を、さらに備えることが好ましい。 In the above playback device, it is preferable to further include terminal list display means for displaying a terminal list of wireless terminals for which a dedicated link is established.
　この構成によれば、接続した無線端末の情報をより詳しく認識することができるので、ＤＪの交代や楽曲リクエストの受付をより適切に行うことができる。例えば、ＤＪの交代時に、端末リストを参照することで、自分の無線端末が専用リンクにより接続されているか否かを確認することができる。そのため、交代後に、自分の無線端末が専用リンクで接続されていないことが分かり、音楽が途切れてしまう等の不備を避けることができる。また、専用リンクによる接続を再生装置側から操作可能な構成であれば、その判断材料として利用することができる。 According to this configuration, since the information of the connected wireless terminal can be recognized in more detail, the replacement of the DJ and the reception of the music request can be performed more appropriately. For example, it is possible to confirm whether or not the own wireless terminal is connected through a dedicated link by referring to the terminal list when the DJ is changed. Therefore, after the change, it can be seen that the wireless terminal is not connected by a dedicated link, and it is possible to avoid deficiencies such as music being interrupted. In addition, any configuration that can operate the connection by the dedicated link from the playback device side can be used as the determination material.
　この場合、端末リストには、各無線端末の再生状態を示す情報が含まれることが好ましい。 In this case, it is preferable that the terminal list includes information indicating the reproduction state of each wireless terminal.
　この構成によれば、接続した無線端末の情報をより詳しく認識することができるので、ＤＪの交代や楽曲リクエストの受付をより適切に行うことができる。例えば、再生状態を参照することで、再生されている無線端末を認識することができる。そのため、一度再生された無線端末を再度再生してしまう等の不備を避けることができる。また、専用リンクによる接続を再生装置側から操作可能な構成であれば、その判断材料として利用することができる。 According to this configuration, since the information of the connected wireless terminal can be recognized in more detail, the replacement of the DJ and the reception of the music request can be performed more appropriately. For example, the wireless terminal being reproduced can be recognized by referring to the reproduction state. Therefore, it is possible to avoid deficiencies such as replaying a wireless terminal that has been played once again. In addition, any configuration that can operate the connection by the dedicated link from the playback device side can be used as the determination material.
　また、端末リスト内のいずれかの無線端末を選択して、専用リンクを切断するリンク切断手段を、さらに備えることが好ましい。 Further, it is preferable to further include a link disconnection unit that selects any wireless terminal in the terminal list and disconnects the dedicated link.
　この構成によれば、無線端末との接続を、再生装置側から意図的に切断することができるため、不要となった接続を切断することで、接続台数が制限台数に達して、新たな無線端末が接続できなくなる事態を避けることができる。 According to this configuration, since the connection with the wireless terminal can be intentionally disconnected from the playback device side, by disconnecting the connection that is no longer necessary, the number of connections reaches the limited number, and a new wireless A situation in which the terminal cannot be connected can be avoided.
　一方、接続制限手段による制限により、専用リンクが確立できない無線端末に対し、その旨を通知する通知手段を、さらに備えることが好ましい。 On the other hand, it is preferable to further include notification means for notifying a wireless terminal that cannot establish a dedicated link due to restrictions by the connection restriction means.
　この構成によれば、無線端末側で、接続台数の制限により接続できなかったのか、それ以外の要因（例えば通信障害）で接続できなかったのか、を容易に把握することができる。よって、無線端末側で無駄な再試行を避けることができる。 According to this configuration, on the wireless terminal side, it is possible to easily grasp whether the connection could not be made due to the limitation of the number of connected devices or whether the connection could not be made due to other factors (for example, communication failure). Therefore, useless retries can be avoided on the wireless terminal side.
　また、接続を許可する無線端末を設定する許可端末設定手段を、さらに備え、接続制限手段は、接続依頼があった無線端末を認証し、許可端末設定手段により設定された無線端末以外の無線端末の接続を制限することが好ましい。 In addition, the wireless communication terminal further includes a permitted terminal setting unit configured to set a wireless terminal permitted to be connected, and the connection restriction unit authenticates the wireless terminal requested to connect, and a wireless terminal other than the wireless terminal set by the permitted terminal setting unit. It is preferable to limit the connections.
　この構成によれば、設定された無線端末以外の無線端末の接続を制限することで、部外者の無線端末が再生装置に接続して、接続台数を圧迫するのを避けることができる。また、設定によりＤＪの無線端末以外の人の無線端末の接続を制限（拒否）することができるため、ＤＪ以外の人間が接続して音楽パフォーマンスに影響を与えるのを避けることができる。これらのように、予め接続を許可する無線端末を設定して接続制限を行いつつ、その中でＤＪの交代や楽曲リクエストの受付をその場で（即興、アドリブで）可能とすることで、ライブ感を維持しつつ安定した音楽パフォーマンスを提供することができる。 According to this configuration, by restricting the connection of wireless terminals other than the set wireless terminal, it is possible to prevent an outsider's wireless terminal from connecting to the playback device and pressing the number of connected terminals. In addition, since it is possible to restrict (reject) the connection of a wireless terminal of a person other than the DJ wireless terminal by setting, it is possible to avoid a person other than the DJ from connecting and affecting the music performance. In this way, by setting wireless terminals that permit connection in advance and restricting connections, DJs can be replaced and music requests can be accepted on the spot (improvised, ad-lib). Stable music performance can be provided while maintaining the feeling.
　本発明のプログラムは、コンピューターに、上記の再生装置の制御方法における各ステップを実行させることを特徴とする。 The program of the present invention causes a computer to execute each step in the above-described playback device control method.
　この構成によれば、本プログラムを搭載するだけで、コンピューターに上記の制御方法を実行させることができる。 This configuration allows a computer to execute the above control method simply by installing this program.
実施形態に係る再生システムのシステム構成図である。1 is a system configuration diagram of a playback system according to an embodiment. 再生システムの制御構成を示した制御ブロック図である。It is the control block diagram which showed the control structure of the reproduction | regeneration system. 再生システムによる専用リンクの接続制御動作およびデータ転送動作を示したフローチャートである。5 is a flowchart showing connection control operation and data transfer operation of a dedicated link by the reproduction system. 無線端末のメニュー画面（ａ）、楽曲選択画面（ｂ）およびデッキ選択画面（ｃ）を示した図である。It is the figure which showed the menu screen (a), music selection screen (b), and deck selection screen (c) of a wireless terminal. 再生システムの変形例における制御構成を示した制御ブロック図である。It is the control block diagram which showed the control structure in the modification of a reproduction | regeneration system.
　以下、添付図面を参照し、本発明の一実施形態に係る再生装置、再生システム、再生装置の制御方法およびプログラムについて説明する。本実施形態では、再生装置を備えた再生システムを例示する。この再生システムは、ＤＪ（Ｄｉｓｃ　Ｊｏｃｋｅｙ）が音楽パフォーマンス（ＤＪプレイ）を行うためのシステムであり、ライブハウス等で参加者が持ち寄った無線端末を、据置きのＤＪ機器である再生装置に無線接続して構成されること等を想定している。なお、本再生システムは、ＤＪの交代や楽曲リクエストの受付等を適切に行うことができるように、専用リンクにより接続されている無線端末の端末数を表示する機能を有したものである。 Hereinafter, a playback device, a playback system, a playback device control method, and a program according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this embodiment, a playback system including a playback device is illustrated. This playback system is a system for DJs (Disc Jockey) to perform music performances (DJ play), and wireless terminals brought by participants at live houses etc. are wirelessly connected to playback devices that are stationary DJ devices. It is assumed that they are configured as such. In addition, this reproduction | regeneration system has a function which displays the terminal number of the radio | wireless terminal connected by the exclusive link so that DJ change, reception of a music request, etc. can be performed appropriately.
　図１に示すように、再生システムＳＹは、ＤＪ機器である再生装置１と、再生装置１に接続され、音声を出力する外部スピーカー２と、再生装置１に無線接続された複数台の無線端末３と、により構成されている。再生装置１と複数台の無線端末３とは、Ｗｉ‐Ｆｉ（登録商標）等の無線通信ネットワークＮＷを介して接続されており、相互間で各種データを通信可能に構成されている。 As shown in FIG. 1, the playback system SY includes a playback device 1 that is a DJ device, an external speaker 2 that is connected to the playback device 1 and outputs sound, and a plurality of wireless terminals that are wirelessly connected to the playback device 1. 3. The playback device 1 and the plurality of wireless terminals 3 are connected via a wireless communication network NW such as Wi-Fi (registered trademark), and are configured to be able to communicate various data between each other.
　再生装置１は、ＤＪプレイヤーおよびＤＪミキサーの一体型のＤＪ機器であり、加えてＤＪコントローラー機能を有している。また、再生装置１の上面には、左右一対のデッキ１１を含む各種操作子３２（図２参照）が配設されている。また、再生装置１上面の中央上部には、左右に並んだ４個のＬＥＤランプ１３と、液晶ディスプレイ１４とが配設されている。なお、再生装置１は、ＤＪプレイヤーやＤＪミキサーであっても良い。すなわち、ＤＪプレイヤーやＤＪミキサーにも本発明を適用することができる。 The playback device 1 is an integrated DJ device including a DJ player and a DJ mixer, and additionally has a DJ controller function. Further, various operating elements 32 (see FIG. 2) including a pair of left and right decks 11 are arranged on the upper surface of the reproducing apparatus 1. Further, four LED lamps 13 arranged on the left and right and a liquid crystal display 14 are arranged at the center upper part of the upper surface of the reproducing apparatus 1. Note that the playback apparatus 1 may be a DJ player or a DJ mixer. That is, the present invention can be applied to a DJ player and a DJ mixer.
　ここで図２の制御ブロック図を参照して、再生装置１の制御構成について説明する。図２に示すように、再生装置１は、無線通信部（通信手段）２１と、操作部２２と、再生処理部２３と、音声入出力部２４と、制御部２５と、ＬＥＤ表示部２６と、液晶表示部２７と、を備えている。ＬＥＤ表示部２６は、４個のＬＥＤランプ１３により構成されている。また、液晶表示部２７は、液晶ディスプレイ１４により構成されている。 Here, the control configuration of the playback device 1 will be described with reference to the control block diagram of FIG. As shown in FIG. 2, the playback device 1 includes a wireless communication unit (communication means) 21, an operation unit 22, a playback processing unit 23, a voice input / output unit 24, a control unit 25, and an LED display unit 26. And a liquid crystal display unit 27. The LED display unit 26 includes four LED lamps 13. The liquid crystal display unit 27 includes the liquid crystal display 14.
　無線通信部２１は、無線モジュール３１で構成されており、無線通信ネットワークＮＷに接続し、当該無線通信ネットワークＮＷを介して複数台の無線端末３との無線通信を行う。具体的には、無線通信部２１は、各無線端末３とのやり取りを行うと共に、各無線端末３からの楽曲データを順次受け取る。そして、各無線端末３から転送された楽曲データは、再生処理部２３のバッファメモリー４１（後述する）に記憶される。なお、楽曲データは、楽曲単位で転送することも可能であるが、本実施形態では、楽曲単位のデータを分割した分割データ単位で順次転送する。 The wireless communication unit 21 includes a wireless module 31 and connects to the wireless communication network NW to perform wireless communication with a plurality of wireless terminals 3 via the wireless communication network NW. Specifically, the wireless communication unit 21 exchanges data with each wireless terminal 3 and sequentially receives music data from each wireless terminal 3. The music data transferred from each wireless terminal 3 is stored in a buffer memory 41 (described later) of the reproduction processing unit 23. The music data can also be transferred in units of music, but in this embodiment, the music data is sequentially transferred in divided data units obtained by dividing the data in music units.
　操作部２２は、再生装置１の操作を行うためのものであり、上記各種操作子３２により構成されている。具体的には、楽曲データの再生処理、ミックス処理またはエフェクト処理を行うのに用いられる。また、後述の無線端末３との専用リンクを切断するときに用いられる。 The operation unit 22 is for operating the playback device 1 and is configured by the various operators 32 described above. Specifically, it is used to perform music data reproduction processing, mix processing, or effect processing. Further, it is used when a dedicated link with the wireless terminal 3 described later is disconnected.
　再生処理部２３は、バッファメモリー４１と、２個のオーディオプレーヤーモジュール４２と、ミックス／エフェクトモジュール４３と、を有している。バッファメモリー４１は、各無線端末３から転送された楽曲データ、およびＵＳＢメモリー等の記録媒体（図示省略）から読み出された楽曲データを一時保存する。各オーディオプレーヤーモジュール４２は、操作部２２（デッキ１１）の操作に伴って、バッファメモリー４１から楽曲データを順次読み出して、楽曲データをミックス／エフェクトモジュール４３に入力する（再生処理）。ミックス／エフェクトモジュール４３は、操作部２２の操作に伴って、２個のオーディオプレーヤーモジュール４２から出力された楽曲データに対しミックス処理またはエフェクト処理を行い、処理後の楽曲データ（再生音声信号）を音声入出力部２４に入力する。 The reproduction processing unit 23 includes a buffer memory 41, two audio player modules 42, and a mix / effect module 43. The buffer memory 41 temporarily stores music data transferred from each wireless terminal 3 and music data read from a recording medium (not shown) such as a USB memory. Each audio player module 42 sequentially reads the music data from the buffer memory 41 in accordance with the operation of the operation unit 22 (deck 11), and inputs the music data to the mix / effect module 43 (playback processing). The mix / effect module 43 performs mix processing or effect processing on the music data output from the two audio player modules 42 in accordance with the operation of the operation unit 22, and uses the processed music data (reproduced audio signal). Input to the voice input / output unit 24.
　音声入出力部２４は、ＡＶ端子やＵＳＢ端子等の各種入出力端子４６により構成されており、接続した外部機器との間で音声信号を入出力する。具体的には、音声入出力部２４は、主に、再生処理部２３から出力された処理後の楽曲データ（再生音声信号）を、外部スピーカー２に出力する。 The audio input / output unit 24 includes various input / output terminals 46 such as an AV terminal and a USB terminal, and inputs / outputs audio signals to / from connected external devices. Specifically, the audio input / output unit 24 mainly outputs the processed music data (reproduced audio signal) output from the reproduction processing unit 23 to the external speaker 2.
　再生装置１は、無線通信部２１により、各無線端末３から転送された楽曲データを受け取り、バッファメモリー４１に一時保存する。一方で、各オーディオプレーヤーモジュール４２およびミックス／エフェクトモジュール４３により、バッファメモリー４１に一時記憶された楽曲データに対し再生処理、ミックス処理およびエフェクト処理を行い、音声入出力部２４を介して外部スピーカー２に出力する。すなわち、再生装置１は、楽曲データを受け取りながら、当該楽曲データまたは他の楽曲データを再生可能に構成されている。 The playback device 1 receives the music data transferred from each wireless terminal 3 by the wireless communication unit 21 and temporarily stores it in the buffer memory 41. On the other hand, the audio player module 42 and the mix / effect module 43 perform reproduction processing, mix processing, and effect processing on the music data temporarily stored in the buffer memory 41, and the external speaker 2 through the audio input / output unit 24. Output to. That is, the playback device 1 is configured to be able to play back the music data or other music data while receiving the music data.
　制御部２５は、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）５１、ＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）５２および記憶装置５３を有している。ＣＰＵ５１は、再生装置１の制御に係る各種演算処理を行う中央演算処理装置である。ＲＡＭ５２は、当該各種演算処理の作業領域となる揮発性メモリーである。記憶装置５３は、当該各種演算処理を行うための制御プログラムおよび制御データを記憶すると共に、再生装置１側の専用リンクアプリケーションを含む各種アプリケーションを記憶する不揮発性メモリーである。そして、ＣＰＵ５１は、インストールされた当該専用リンクアプリケーションを起動することで、リンク確立部（リンク確立手段）６１、接続制限部（接続制限手段）６２、エラー通知部（通知手段）６３、表示制御部６４およびリンク切断部（リンク切断手段）６５として機能する。なお、再生処理部２３および制御部２５は、１個のメインマイコンに搭載されている。 The control unit 25 includes a CPU (Central Processing Unit) 51, a RAM (Random Access Memory) 52, and a storage device 53. The CPU 51 is a central processing unit that performs various types of processing related to the control of the playback device 1. The RAM 52 is a volatile memory serving as a work area for the various arithmetic processes. The storage device 53 is a non-volatile memory that stores a control program and control data for performing the various arithmetic processes and stores various applications including a dedicated link application on the playback device 1 side. Then, the CPU 51 activates the installed dedicated link application, thereby establishing a link establishment unit (link establishment unit) 61, a connection restriction unit (connection restriction unit) 62, an error notification unit (notification unit) 63, and a display control unit. 64 and a link cutting unit (link cutting means) 65. The reproduction processing unit 23 and the control unit 25 are mounted on one main microcomputer.
　リンク確立部６１は、各無線端末３からの接続依頼に伴って、無線通信ネットワークＮＷを介し、各無線端末３との専用リンクを確立する。具体的には、リンク確立部６１は、無線端末３からの接続依頼を受け、当該無線端末３に対し、専用リンクによる接続を許可する接続許可通知を送信する。この専用リンクは、無線通信ネットワークＮＷを利用して、無線端末３から再生装置１に楽曲データを転送するためのリンクシステムであり、再生装置１側から接続を操作（接続／切断）可能なシステムである。すなわち、再生装置１は、これを利用して、複数台の無線端末３からの楽曲データの転送を制御する。なお、以下、専用リンクが確立している無線接続の端末数を、「専用リンクによる無線端末３の接続台数」、または単に「接続台数」と呼称する。 The link establishment unit 61 establishes a dedicated link with each wireless terminal 3 via the wireless communication network NW in response to a connection request from each wireless terminal 3. Specifically, the link establishment unit 61 receives a connection request from the wireless terminal 3 and transmits a connection permission notification for permitting connection through the dedicated link to the wireless terminal 3. This dedicated link is a link system for transferring music data from the wireless terminal 3 to the playback device 1 using the wireless communication network NW, and a system capable of operating (connecting / disconnecting) the connection from the playback device 1 side. It is. That is, the playback apparatus 1 uses this to control the transfer of music data from a plurality of wireless terminals 3. Hereinafter, the number of wirelessly connected terminals for which a dedicated link is established is referred to as “the number of wireless terminals 3 connected by a dedicated link” or simply “the number of connected terminals”.
　接続制限部６２は、専用リンクによる無線端末３の接続台数が４台以下となるように、専用リンクによる５台以上の無線端末３の接続を制限する。具体的には、専用リンクによる無線端末３の接続台数が４台未満であるか否かによって、新たな無線端末３との専用リンクの確立（接続）を許可／拒否する。より具体的には、接続台数が４台未満であるには、リンク確立部６１による当該無線端末３への接続許可通知の送信を許容する。一方、接続台数が４台である場合には、リンク確立部６１による接続許可通知の送信をキャンセルすると共に、当該無線端末３に対し、専用リンクによる接続を拒否する接続拒否通知を送信する。これにより、専用リンクによる所定数以上の無線端末３の接続を制限することで、複数の無線端末３から同時転送される楽曲データの数を制限し、転送レートを所定閾値以上に維持する。 The connection restriction unit 62 restricts the connection of five or more wireless terminals 3 using the dedicated link so that the number of wireless terminals 3 connected using the dedicated link is 4 or less. Specifically, the establishment (connection) of a dedicated link with a new wireless terminal 3 is permitted / rejected depending on whether the number of wireless terminals 3 connected by the dedicated link is less than four. More specifically, if the number of connected devices is less than 4, the link establishment unit 61 is allowed to transmit a connection permission notification to the wireless terminal 3. On the other hand, when the number of connected devices is 4, the transmission of the connection permission notification by the link establishing unit 61 is canceled and a connection rejection notification for rejecting the connection through the dedicated link is transmitted to the wireless terminal 3. Thereby, by restricting the connection of a predetermined number or more of wireless terminals 3 by the dedicated link, the number of music data transferred simultaneously from the plurality of wireless terminals 3 is limited, and the transfer rate is maintained at a predetermined threshold value or more.
　エラー通知部６３は、接続制限部６２による制限により専用リンクが確立できない無線端末３に対し、その旨を通知する。具体的には、接続制限部６２が接続を拒否する（接続拒否通知を送信する）場合に、無線通信部２１により、接続を拒否する無線端末３に対し、「接続台数が一杯で接続できない」旨のエラー通知を送信する。 The error notification unit 63 notifies the wireless terminal 3 that the dedicated link cannot be established due to the restriction by the connection restriction unit 62. Specifically, when the connection restriction unit 62 rejects the connection (transmits a connection rejection notification), the wireless communication unit 21 “cannot connect because the number of connected devices is full” to the wireless terminal 3 that refuses the connection. Send an error notification to that effect.
　表示制御部６４は、ＬＥＤ表示部２６および液晶表示部２７を制御し、専用リンクが確立している無線端末３の端末数（接続台数）および端末リストＬを表示する。すなわち、表示制御部６４は、ＬＥＤ表示部２６を制御し、４個のＬＥＤランプ１３を個々に点灯／消灯させて、その点灯数で専用リンクによる無線端末３の接続台数を明示する。また、表示制御部６４は、液晶表示部２７を制御し、液晶ディスプレイ１４上に、専用リンクにより接続した無線端末３の端末リストＬ（図１参照）を表示する。図１に示すように、端末リストＬでは、専用リンクにより接続した各無線端末３の端末名を表示すると共に、再生アイコンや一時停止アイコンにより、無線端末３の再生状態を表示する。このように、ＬＥＤ表示部２６および表示制御部６４により、端末数表示手段を構成し、液晶表示部２７および表示制御部６４により、端末リスト表示手段を構成している。 The display control unit 64 controls the LED display unit 26 and the liquid crystal display unit 27, and displays the number of terminals (number of connected devices) and the terminal list L of the wireless terminals 3 for which a dedicated link is established. That is, the display control unit 64 controls the LED display unit 26 to individually turn on / off the four LED lamps 13 and clearly indicate the number of connected wireless terminals 3 by the dedicated link. Further, the display control unit 64 controls the liquid crystal display unit 27 to display the terminal list L (see FIG. 1) of the wireless terminals 3 connected by the dedicated link on the liquid crystal display 14. As shown in FIG. 1, in the terminal list L, the terminal name of each wireless terminal 3 connected by a dedicated link is displayed, and the reproduction state of the wireless terminal 3 is displayed by a reproduction icon or a pause icon. As described above, the LED display unit 26 and the display control unit 64 constitute a terminal number display unit, and the liquid crystal display unit 27 and the display control unit 64 constitute a terminal list display unit.
　リンク切断部６５は、操作部２２の操作に伴って、対象の無線端末３との専用リンクを切断する。具体的には、ユーザーが端末リストＬ内のいずれかの無線端末３を選択する操作を受けて、選択した無線端末３との専用リンクを切断するためのリンク切断通知を送信し、当該無線端末３による楽曲データの転送を禁止する。そして、当該無線端末３を端末リストＬから除去する。 The link disconnecting unit 65 disconnects the dedicated link with the target wireless terminal 3 in accordance with the operation of the operation unit 22. Specifically, the user receives an operation of selecting any one of the wireless terminals 3 in the terminal list L, transmits a link disconnection notification for disconnecting the dedicated link with the selected wireless terminal 3, and the wireless terminal 3 prohibits transfer of music data. Then, the wireless terminal 3 is removed from the terminal list L.
　無線端末３は、スマートフォンや、無線通信機能を有したパーソナルコンピューター（タブレットＰＣやノートＰＣ）であり、無線通信機構７１と、操作機構７２と、表示機構７３と、これらを制御する制御機構７４と、を備えている。無線通信機構７１は、無線通信ネットワークＮＷを介して再生装置１に接続する。操作機構７２は、タッチパネル等の各種操作子を有し、無線端末３の各種操作を行う。表示機構７３は、液晶ディスプレイ等の表示画面Ｓを有し、各種情報を表示する。制御機構７４は、無線端末３側の専用リンクアプリケーションがインストールされており、これを起動することで、接続依頼送信部８１、データ転送部（データ転送手段）８２およびエラー表示部８３として機能する。 The wireless terminal 3 is a smartphone or a personal computer (tablet PC or notebook PC) having a wireless communication function, and includes a wireless communication mechanism 71, an operation mechanism 72, a display mechanism 73, and a control mechanism 74 that controls these. It is equipped with. The wireless communication mechanism 71 is connected to the playback device 1 via the wireless communication network NW. The operation mechanism 72 includes various operators such as a touch panel and performs various operations of the wireless terminal 3. The display mechanism 73 has a display screen S such as a liquid crystal display and displays various types of information. The control mechanism 74 is installed with a dedicated link application on the wireless terminal 3 side, and functions as a connection request transmission unit 81, a data transfer unit (data transfer unit) 82, and an error display unit 83 when activated.
　接続依頼送信部８１は、無線通信機構７１により、専用リンクの接続依頼を再生装置１に送信する。接続依頼は、専用リンクによる接続を依頼する信号である。言い換えれば、専用リンクによる無線端末３の接続台数に空きがあるか否かを確認する信号である。 The connection request transmitting unit 81 transmits a dedicated link connection request to the playback device 1 by the wireless communication mechanism 71. The connection request is a signal for requesting connection through a dedicated link. In other words, it is a signal for confirming whether or not there is a vacancy in the number of connected wireless terminals 3 via the dedicated link.
　データ転送部８２は、再生装置１から接続許可通知を受信した場合に、無線通信機構７１を制御し、確立している専用リンクにより楽曲データを再生装置１に転送する。エラー表示部８３は、再生装置１から上記エラー通知を受信した場合に、表示機構７３により、「接続台数が一杯で接続できない」旨のエラーメッセージを表示する。 When the data transfer unit 82 receives a connection permission notification from the playback device 1, the data transfer unit 82 controls the wireless communication mechanism 71 and transfers the music data to the playback device 1 through the established dedicated link. When the error display unit 83 receives the error notification from the playback device 1, the error display unit 83 displays an error message indicating that “the number of connected devices is full and cannot be connected” by the display mechanism 73.
　ここで図３を参照して、再生システムＳＹによる専用リンクの接続制御動作およびデータ転送動作について説明する。ここでは、任意の１の無線端末３と再生装置１との間で行われる動作について説明する。これらの一連の動作は、再生装置１側および無線端末３側の両専用リンクアプリケーションが起動している状態で行われるものとする。また、予め、再生装置１が、当該１の無線端末３との無線通信ネットワークＮＷに接続し、再生装置１および当該１の無線端末３が無線通信ネットワークＮＷを介して接続した（接続ステップ）後に、その状態で行われるものとする。 Here, with reference to FIG. 3, the connection control operation and data transfer operation of the dedicated link by the reproduction system SY will be described. Here, an operation performed between any one wireless terminal 3 and the playback apparatus 1 will be described. These series of operations are performed in a state in which both dedicated link applications on the playback device 1 side and the wireless terminal 3 side are activated. In addition, after the playback device 1 is connected in advance to the wireless communication network NW with the one wireless terminal 3 and the playback device 1 and the first wireless terminal 3 are connected via the wireless communication network NW (connection step). It shall be performed in that state.
　図３に示すように、まず、当該１の無線端末３は、操作機構７２による接続指示操作に起因して、接続依頼送信部８１により、接続依頼を再生装置１に送信する（Ｓ１）。例えば、図４（ａ）に示すようなメニュー画面上のＬＩＮＫ接続ボタン８６の押下を、接続開始操作とする。 As shown in FIG. 3, first, the one wireless terminal 3 transmits a connection request to the playback apparatus 1 by the connection request transmission unit 81 due to the connection instruction operation by the operation mechanism 72 (S1). For example, pressing the LINK connection button 86 on the menu screen as shown in FIG.
　これに対し、再生装置１は、無線端末３からの接続依頼を受信すると（Ｓ２：Ｙｅｓ）、接続制限部６２により、専用リンクによる無線端末３の接続台数が４台未満である否かを判定する（Ｓ３）。接続台数が４台であると判定された場合（Ｓ３：Ｎｏ）には、接続制限部６２およびエラー通知部６３により、接続拒否通知と上記エラー通知とを無線端末３に返信する（接続制限ステップ：Ｓ４）。無線端末３は、接続拒否通知と上記エラー通知とを受信すると（Ｓ５：Ａ）、専用リンクによる接続を中止し（Ｓ６）、エラー表示部８３により、「接続台数が一杯で接続できない」旨のメッセージを表示する（Ｓ７）。これにより本動作を終了する。 On the other hand, when the playback apparatus 1 receives a connection request from the wireless terminal 3 (S2: Yes), the connection restriction unit 62 determines whether or not the number of wireless terminals 3 connected by the dedicated link is less than four. (S3). If it is determined that the number of connections is four (S3: No), the connection restriction unit 62 and the error notification unit 63 return a connection rejection notification and the error notification to the wireless terminal 3 (connection restriction step). : S4). When the wireless terminal 3 receives the connection rejection notification and the error notification (S5: A), the wireless terminal 3 stops the connection using the dedicated link (S6), and the error display unit 83 indicates that “the number of connected units is full and cannot be connected”. A message is displayed (S7). Thus, this operation is finished.
　Ｓ３に戻り、接続台数が４台未満であると判定された場合（Ｓ３：Ｙｅｓ）には、再生装置１は、リンク確立部６１により、接続許可通知を無線端末３に返信して（Ｓ８）、無線端末３との専用リンクを確立する（リンク確立ステップ）。その後、表示制御部６４により、専用リンクの接続台数および端末リストＬの表示を更新し、現在の接続台数および端末リストＬの表示する（Ｓ９：端末数表示ステップ）。 Returning to S3, when it is determined that the number of connected devices is less than 4 (S3: Yes), the playback device 1 returns a connection permission notification to the wireless terminal 3 by the link establishing unit 61 (S8). Then, a dedicated link with the wireless terminal 3 is established (link establishment step). Thereafter, the display control unit 64 updates the number of connected dedicated links and the display of the terminal list L, and displays the current number of connected terminals and the terminal list L (S9: terminal number display step).
　一方、無線端末３は、接続許可通知を受信すると（Ｓ５：Ｂ）、楽曲選択操作を待つ操作待ち状態に移行する（Ｓ１０）。そして、操作機構７２による楽曲選択操作を受けて（Ｓ１０：Ｙｅｓ）、データ転送部８２により、専用リンクを用いて選択済みの楽曲データを再生装置１に順次転送する（Ｓ１１）。例えば、図４（ｂ）に示す楽曲選択画面と、図４（ｃ）に示すデッキ指定画面とを表示し、左右のデッキ１１に対し楽曲を選択して対応付け、デッキ１１毎に対応付けた楽曲の各楽曲データを、再生装置１に同時転送する。これにより本動作を終了する。 On the other hand, when the wireless terminal 3 receives the connection permission notification (S5: B), the wireless terminal 3 shifts to an operation waiting state waiting for a music selection operation (S10). Then, upon receiving a music selection operation by the operation mechanism 72 (S10: Yes), the data transfer unit 82 sequentially transfers the selected music data to the playback apparatus 1 using the dedicated link (S11). For example, the music selection screen shown in FIG. 4B and the deck designation screen shown in FIG. 4C are displayed, and music is selected and associated with the left and right decks 11 and associated with each deck 11. Each piece of music data is transferred to the playback device 1 at the same time. Thus, this operation is finished.
　以上のような構成によれば、専用リンクが確立している無線端末３の端末数（接続台数）を表示することにより、ユーザーが専用リンクによる無線端末３の接続台数を認識（視認）することができるため、これがＤＪの交代や楽曲リクエストの受付の指標となり、ＤＪの交代や楽曲リクエストの受付を適切に行うことができる。また、データ転送を行うための接続（専用リンクによる接続）のみを制限し、その接続台数を表示するので、データ転送の転送レートに強く影響する接続のみを制限し、転送レートに強く影響する情報（端末数）のみを表示することができる。すなわち、転送レートにそれほど影響がなく無視できる通信（専用リンクの接続制御におけるやり取り等）を許容しつつ、転送レートに強く影響し無視できない通信（楽曲データの転送）を一部制限し接続台数表示の表示対象とする。これにより、ユーザーに対し、ＤＪの交代や楽曲リクエストの受付に必要且つ重要な情報を適切に報知することができる。 According to the configuration as described above, the number of connected wireless terminals 3 with the dedicated link is displayed, so that the user can recognize (view) the number of connected wireless terminals 3 using the dedicated link. Therefore, this becomes an index for the change of DJ and reception of music requests, and the change of DJ and reception of music requests can be appropriately performed. In addition, since only the connection for data transfer (connection by dedicated link) is limited and the number of connected units is displayed, only the connection that strongly affects the transfer rate of data transfer is limited, and the information that strongly affects the transfer rate Only (number of terminals) can be displayed. In other words, while allowing communications that can be ignored without much impact on the transfer rate (such as exchanges in connection control of dedicated links), some of the communications (transfer of music data) that strongly affect the transfer rate and cannot be ignored are limited to display the number of connected The display target. Accordingly, it is possible to appropriately notify the user of important information necessary for changing the DJ or receiving a music request.
　また、専用リンクが確立している無線端末３の端末リストＬを表示することにより、接続した無線端末３の情報をより詳しく認識することができるので、ＤＪの交代や楽曲リクエストの受付をより適切に行うことができる。例えば、ＤＪの交代時に、端末リストＬを参照することで、自分の無線端末３が専用リンクにより接続されているか否かを確認することができる。そのため、交代後に、自分の無線端末３が専用リンクで接続されていないことが分かり、音楽が途切れてしまう等の不備を避けることができる。 In addition, by displaying the terminal list L of the wireless terminals 3 with which the dedicated link is established, it is possible to recognize the information of the connected wireless terminals 3 in more detail. Can be done. For example, by referring to the terminal list L when the DJ is changed, it can be confirmed whether or not the own wireless terminal 3 is connected by a dedicated link. Therefore, after the change, it can be understood that the wireless terminal 3 is not connected by a dedicated link, and it is possible to avoid deficiencies such as music being interrupted.
　さらに、端末リストＬ内に、各無線端末３の再生状態を示す情報（再生アイコン）を表示することで、接続した無線端末３の情報をより詳しく認識することができるため、ＤＪの交代や楽曲リクエストの受付をより適切に行うことができる。例えば、再生状態を参照することで、再生されている無線端末３を認識することができる。そのため、一度再生された無線端末３を再度再生してしまう等の不備を避けることができる。 Furthermore, since information (play icon) indicating the playback state of each wireless terminal 3 can be displayed in the terminal list L, the information of the connected wireless terminal 3 can be recognized in more detail. Requests can be received more appropriately. For example, the wireless terminal 3 being reproduced can be recognized by referring to the reproduction state. Therefore, deficiencies such as replaying the wireless terminal 3 once replayed can be avoided.
　また、リンク切断部６５を有することにより、専用リンクによる無線端末３との接続を、再生装置１側から意図的に切断することができる。そのため、不要となった接続を切断することで、接続台数が制限台数（本実施形態では４台）に達して、新たな無線端末３が接続できなくなる事態を避けることができる。例えばＤＪプレイの終わったＤＪの無線端末３が専用リンクにより接続されたままになっている場合や、リクエストしたユーザーの無線端末３が専用リンクにより接続されたままになっている場合等に、これらを切断することで、接続台数に空きを作ることができる。 Also, by having the link disconnection unit 65, the connection with the wireless terminal 3 through the dedicated link can be intentionally disconnected from the playback device 1 side. For this reason, it is possible to avoid a situation where the number of connected devices reaches the limit number (four in this embodiment) and the new wireless terminal 3 cannot be connected by disconnecting unnecessary connections. For example, when the DJ wireless terminal 3 after the DJ play is still connected by the dedicated link, or when the requesting user's wireless terminal 3 is still connected by the dedicated link, etc. By disconnecting, you can make room for the number of connections.
　さらに、専用リンクが確立できない無線端末３に対し、その旨を通知することにより、無線端末３側で、接続台数の制限により接続できなかったのか、それ以外の要因（例えば通信障害）で接続できなかったのか、を容易に把握することができる。よって、無線端末３側で無駄な再試行を避けることができる。 Further, by notifying the wireless terminal 3 that cannot establish a dedicated link, the wireless terminal 3 side can be connected due to the limitation of the number of connections or other factors (for example, communication failure). It can be easily grasped whether or not there was. Therefore, useless retries can be avoided on the wireless terminal 3 side.
　なお、本実施形態においては、接続台数が４台未満であれば、いずれの無線端末３も専用リンクにより接続できる構成としたが、専用リンクによる接続を、予め接続を許可した無線端末３（以下、許可端末と呼称）のみに制限し、接続台数が４台未満であっても、許可端末以外は接続できない構成としても良い。具体的には、図５に示すように、再生装置１のＣＰＵ５１は、専用リンクアプリケーションを起動することで、図２に示した各部に加え、許可端末設定部（許可端末設定手段）９１として機能する。許可端末設定部９１は、操作部２２による設定操作に伴って、許可端末を予め設定（登録）する。一方、接続制限部６２は、接続依頼があった無線端末３を認証し、許可端末以外の無線端末３の接続を制限する（接続拒否通知を送信する）。これにより、特定の無線端末３や特定の人間の無線端末３のみに専用リンクの接続を制限する。 In the present embodiment, if the number of connected devices is less than 4, any wireless terminal 3 can be connected by a dedicated link. In other words, it may be configured such that only the permitted terminal can be connected even if the number of connected terminals is less than four. Specifically, as shown in FIG. 5, the CPU 51 of the playback device 1 functions as a permitted terminal setting unit (permitted terminal setting unit) 91 in addition to the units illustrated in FIG. 2 by starting the dedicated link application. To do. The permission terminal setting unit 91 sets (registers) the permission terminal in advance in accordance with the setting operation by the operation unit 22. On the other hand, the connection restriction unit 62 authenticates the wireless terminal 3 for which a connection request has been made, and restricts the connection of the wireless terminals 3 other than the permitted terminal (transmits a connection rejection notification). This restricts the connection of the dedicated link only to the specific wireless terminal 3 or the specific human wireless terminal 3.
　本変形例によれば、許可端末以外の無線端末３の接続を制限することで、部外者の無線端末３が再生装置１に接続して、接続台数を圧迫するのを避けることができる。また、設定によりＤＪ以外の人間の接続を制限（拒否）することができるため、ＤＪ以外の人間が接続して音楽パフォーマンスに影響を与えるのを避けることができる。これらのように、予め接続を許可する無線端末３を設定して接続制限を行いつつ、その中でＤＪの交代や楽曲リクエストの受付をその場で（即興、アドリブで）可能とすることで、ライブ感を維持しつつ安定した音楽パフォーマンスを提供することができる。 According to the present modification, by restricting the connection of the wireless terminals 3 other than the permitted terminal, it is possible to prevent the outsider's wireless terminal 3 from connecting to the playback device 1 and pressing the number of connected terminals. In addition, since the connection of humans other than DJs can be restricted (rejected) by setting, it is possible to avoid that humans other than DJs connect and affect music performance. As described above, by setting the wireless terminal 3 that permits connection in advance and performing connection restrictions, it is possible to change DJs and receive music requests on the spot (improvised, ad-lib), Stable music performance can be provided while maintaining a live feeling.
　また、本実施形態においては、４個のＬＥＤランプ１３の点灯／消灯によって、専用リンクによる無線端末３の接続台数を表示する構成であったが、これに限るものではなく、液晶ディスプレイ１４によって、接続台数を表示する構成であっても良い。ひいては、接続台数をユーザーに報知するものであれば、表示するものに限るものではなく、例えば、再生装置１に振動機能部を設け振動機能により接続台数を報知する構成であっても良いし、再生装置１に接続したヘッドフォンへの音声出力により接続台数を報知する構成であっても良い。また、当該報知手段が、接続台数自体を報知するのではなく、接続台数が制限台数（本実施形態では４台）になった旨、もしくは制限台数に近づいた旨をユーザーに報知する構成であっても良い。 In the present embodiment, the number of connected wireless terminals 3 by the dedicated link is displayed by turning on / off the four LED lamps 13. However, the present invention is not limited to this. It may be configured to display the number of connected devices. Eventually, as long as it notifies the user of the number of connected devices, the display device is not limited to display. For example, the playback device 1 may be provided with a vibration function unit to notify the number of connected devices using a vibration function. The configuration may be such that the number of connected devices is notified by audio output to headphones connected to the playback device 1. In addition, the notification means does not notify the number of connected devices per se, but notifies the user that the number of connected devices has reached the limit number (four in this embodiment) or that the limit number has been approached. May be.
　さらに、本実施形態においては、無線端末３側から再生装置１に接続依頼を送信し、これに起因して専用リンクを確立する構成であったが、接続依頼の送信を省略し、接続台数が４台未満の場合に、再生装置１が、接続依頼の有無にかかわらず、無線通信ネットワークＮＷにより無線接続されているいずれかの無線端末３に接続許可通知を送信して、専用リンクを確立する構成であっても良い。この場合、無線通信ネットワークＮＷにより無線接続されている無線端末３の中から、接続許可通知を送信する無線端末３を選択可能とすることが好ましい。 Furthermore, in the present embodiment, the connection request is transmitted from the wireless terminal 3 side to the playback device 1 and the dedicated link is established due to this, but the connection request transmission is omitted and the number of connected devices is When the number is less than four, the playback device 1 transmits a connection permission notification to one of the wireless terminals 3 wirelessly connected by the wireless communication network NW, regardless of whether or not there is a connection request, and establishes a dedicated link. It may be a configuration. In this case, it is preferable that the wireless terminal 3 that transmits the connection permission notification can be selected from the wireless terminals 3 that are wirelessly connected by the wireless communication network NW.
　またさらに、本実施形態においては、接続できる接続台数の上限（制限台数）を４台としたが、これに限るものではない。ただし、想定される転送レート（転送速度）が楽曲データの再生速度（再生処理速度）を超えない数値となるような台数であることが好ましい。 Furthermore, in the present embodiment, the upper limit (restricted number) of connectable units is four, but the present invention is not limited to this. However, it is preferable that the number is such that the assumed transfer rate (transfer speed) does not exceed the reproduction speed (reproduction processing speed) of the music data.
　また、本実施形態においては、端末リストＬにおいて、各無線端末３の再生状態を表示する構成であったが、その他、例えば、各無線端末３のデータ転送の状態や、転送された楽曲の合計数、現在再生可能な楽曲の数等を表示する構成であっても良い。また、端末リストＬにおいて、リンク番号と端末名とを対応づけて表示する構成であっても良いし、４個のＬＥＤランプ１３をリンク番号と対応させ、各ＬＥＤランプ１３の下に端末名を表示する構成であっても良い。 In the present embodiment, the playback status of each wireless terminal 3 is displayed in the terminal list L. However, for example, the data transfer status of each wireless terminal 3 and the total number of transferred songs The number, the number of currently reproducible music pieces, and the like may be displayed. In the terminal list L, the link number and the terminal name may be displayed in association with each other. The four LED lamps 13 are associated with the link number, and the terminal name is displayed under each LED lamp 13. The structure to display may be sufficient.
　さらに、本実施形態においては、データ転送するデータが、楽曲データであり、当該楽曲データを再生する音響機器（ＤＪ機器）の再生装置１に本発明を適用したが、データ転送するデータが、映像データであり、当該映像データを再生する映像機器（ＶＪ機器）の再生装置１に本発明を適用しても良い。無論、楽曲データおよび映像データを再生可能な再生装置１に本発明を適用しても良い。 Further, in the present embodiment, the data to be transferred is music data, and the present invention is applied to the playback device 1 of the audio equipment (DJ equipment) that plays back the music data. However, the data to be transferred is video. The present invention may be applied to the playback device 1 of video equipment (VJ equipment) that plays back video data. Of course, the present invention may be applied to the playback apparatus 1 capable of playing back music data and video data.
　１：再生装置、　３：無線端末、　２１：無線通信部、　２６：ＬＥＤ表示部、　２７：液晶表示部、　６１：リンク確立部、　６２：接続制限部、　６３：エラー通知部、　６４：表示制御部、　６５：リンク切断部、　８２：データ転送部、　９１：許可端末設定部、　Ｌ：端末リスト、　ＮＷ：無線通信ネットワーク、　ＳＹ：再生システム 1: playback device, 3: wireless terminal, 21: wireless communication unit, 26: LED display unit, 27: liquid crystal display unit, 61: link establishment unit, 62: connection restriction unit, 63: error notification unit, 64: display control 65: Link disconnection unit 82: Data transfer unit 91: Permitted terminal setting unit L: Terminal list NW: Wireless communication network SY: Playback system

Claims (9)

  1. 　複数台の無線端末から転送されたデータを受け取りながら再生可能な再生装置であって、
    　前記無線端末と無線通信を行うための無線通信ネットワークに接続する通信手段と、
    　前記無線通信ネットワークを介して、前記無線端末から前記データを転送するための前記無線端末との専用リンクを確立するリンク確立手段と、
    　前記専用リンクによる所定数以上の前記無線端末の接続を制限する接続制限手段と、
    　前記専用リンクが確立している前記無線端末の端末数を表示する端末数表示手段と、を備えたことを特徴とする再生装置。     A playback device capable of playing back data received from a plurality of wireless terminals,
    Communication means for connecting to a wireless communication network for performing wireless communication with the wireless terminal;
    Link establishment means for establishing a dedicated link with the wireless terminal for transferring the data from the wireless terminal via the wireless communication network;
    Connection restriction means for restricting connections of a predetermined number or more of the wireless terminals via the dedicated link;
    And a terminal number display means for displaying the number of terminals of the wireless terminal with which the dedicated link is established.
  2. 　前記専用リンクが確立している前記無線端末の端末リストを表示する端末リスト表示手段を、さらに備えたことを特徴とする請求項１に記載の再生装置。 2. The playback apparatus according to claim 1, further comprising terminal list display means for displaying a terminal list of the wireless terminal with which the dedicated link is established.
  3. 　前記端末リストには、各無線端末の再生状態を示す情報が含まれることを特徴とする請求項２に記載の再生装置。 3. The playback apparatus according to claim 2, wherein the terminal list includes information indicating a playback state of each wireless terminal.
  4. 　前記端末リスト内のいずれかの前記無線端末を選択して、前記専用リンクを切断するリンク切断手段を、さらに備えたことを特徴とする請求項２に記載の再生装置。 3. The playback apparatus according to claim 2, further comprising a link disconnection unit that selects any one of the wireless terminals in the terminal list and disconnects the dedicated link.
  5. 　前記接続制限手段による制限により、前記専用リンクが確立できない前記無線端末に対し、その旨を通知する通知手段を、さらに備えたことを特徴とする請求項１に記載の再生装置。 The reproducing apparatus according to claim 1, further comprising notification means for notifying the wireless terminal that cannot establish the dedicated link due to restriction by the connection restriction means.
  6. 　接続を許可する前記無線端末を設定する許可端末設定手段を、さらに備え、
    　前記接続制限手段は、接続依頼があった前記無線端末を認証し、前記許可端末設定手段により設定された無線端末以外の無線端末の接続を制限することを特徴とする請求項１に記載の再生装置。     An authorized terminal setting means for setting the wireless terminal that permits connection;
    2. The reproduction according to claim 1, wherein the connection restriction unit authenticates the wireless terminal requested to be connected and restricts connection of a wireless terminal other than the wireless terminal set by the permitted terminal setting unit. apparatus.
  7. 　請求項１に記載の再生装置と、
    　前記再生装置に前記無線通信ネットワークを介して接続された前記複数台の無線端末と、を有し、
    　前記各無線端末は、確立している前記専用リンクにより、前記データを転送するデータ転送手段を、備えたことを特徴とする再生システム。     A playback device according to claim 1;
    The plurality of wireless terminals connected to the playback device via the wireless communication network,
    Each of the wireless terminals includes a data transfer means for transferring the data through the established dedicated link.
  8. 　複数台の無線端末から転送されたデータを受け取りながら再生可能な再生装置の制御方法であって、
    　前記再生装置は、
    　前記無線端末と無線通信を行うための無線通信ネットワークに接続する接続ステップと、
    　前記無線通信ネットワークを介して、前記無線端末から前記データを転送するための前記無線端末との専用リンクを確立するリンク確立ステップと、
    　前記専用リンクによる所定数以上の前記無線端末の接続を制限する接続制限ステップと、
    　前記専用リンクが確立している前記無線端末の端末数を表示する端末数表示ステップと、を実行することを特徴とする再生装置の制御方法。     A control method of a playback device capable of playing back data received from a plurality of wireless terminals,
    The playback device
    A connection step of connecting to a wireless communication network for performing wireless communication with the wireless terminal;
    Establishing a link with the wireless terminal for transferring the data from the wireless terminal via the wireless communication network; and
    A connection restriction step for restricting the connection of the predetermined number or more of the wireless terminals via the dedicated link;
    And a terminal number display step of displaying the number of terminals of the wireless terminal with which the dedicated link is established.
  9. 　コンピューターに、請求項８に記載の再生装置の制御方法における各ステップを実行させるためのプログラム。 A program for causing a computer to execute each step in the playback apparatus control method according to claim 8.
PCT/JP2012/001930 2012-03-21 2012-03-21 Playback device, playback system, method for controlling playback device, and program WO2013140439A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001016219A (en) * 1999-06-30 2001-01-19 Hitachi Kokusai Electric Inc Radio lan system
JP2005150833A (en) * 2003-11-11 2005-06-09 Toshiba Corp Information processing apparatus
JP2010188601A (en) * 2009-02-18 2010-09-02 Nec Infrontia Corp Common printer system, common printer, and method for discriminating print requesting source
JP2011215780A (en) * 2010-03-31 2011-10-27 Sony Corp Content transmission apparatus, content playback system, content transmission method, and program

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001016219A (en) * 1999-06-30 2001-01-19 Hitachi Kokusai Electric Inc Radio lan system
JP2005150833A (en) * 2003-11-11 2005-06-09 Toshiba Corp Information processing apparatus
JP2010188601A (en) * 2009-02-18 2010-09-02 Nec Infrontia Corp Common printer system, common printer, and method for discriminating print requesting source
JP2011215780A (en) * 2010-03-31 2011-10-27 Sony Corp Content transmission apparatus, content playback system, content transmission method, and program

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