JP2015069084A - Karaoke distribution server, terminal equipment and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the streaming distribution of karaoke content in such configurations that a trouble hardly occurs in the reproduction of the sound of karaoke and the display of a lyric telop.SOLUTION: A karaoke distribution server 10 acquires information indicating the processing performance of terminal equipment 20, and determines the distribution of either moving image data or acoustic data on the basis of the acquired processing performance. When the distribution of the acoustic data is determined, and the display color of a background image displayed by the terminal equipment 20 is similar to the default display color of telop data, the display color is changed. When the distribution of the moving image data is determined, the moving image data and the telop data are distributed to the terminal equipment 20. When the distribution of the acoustic data is determined, the acoustic data and the telop data are distributed to the terminal equipment 20. When the display color of the telop data is changed, the telop data with which the changed display color has been associated are distributed, and when the display color of the telop data is not changed, the telop data with which the default display color has been associated are distributed.

Description

  The present invention relates to a technique for streaming karaoke content to a terminal device.

  2. Description of the Related Art Conventionally, in an on-demand karaoke system, services for streaming karaoke content to personal terminal devices such as smartphones and tablet computers as well as commercial karaoke devices are known. The karaoke content distributed toward these terminal devices includes moving image data representing the sound and video of karaoke, data representing lyrics telop displayed on the video data, and the like.

  On the other hand, Patent Document 1 discloses a technique for displaying lyrics and background images on a remote control terminal by transmitting karaoke background image data and lyrics data from a karaoke apparatus to the remote control terminal by streaming. In the technique described in Patent Document 1, when the communication speed decreases due to some circumstances, the background image data and the lyrics with the data amount corresponding to the communication speed can be obtained by reducing the bit rate of the background image to be transmitted or by thinning out the background image. Data is transmitted to the remote control terminal.

JP 2006-267835 A

  In general, karaoke content data is composed of acoustic data representing karaoke sound or moving image data representing karaoke sound and video, and lyrics telop data. In order to perform karaoke, sound and lyrics telop are at least essential. In addition, moving image data including sound and video has a larger data amount than sound data including only sound.

  In the above-mentioned on-demand karaoke system, the performance of the network line used by the personal terminal device and the processing performance of the terminal device itself vary from high performance to low performance. Therefore, when content is distributed to a personal terminal device, the performance of the network line or the processing performance of the terminal device itself may not be sufficient. In such a case, the terminal device cannot smoothly receive or play back the content stream, and there is a risk that the playback of the content may be delayed.

  Therefore, it is conceivable to avoid troubles by distributing acoustic data and lyrics telop data having a relatively small amount of data to a terminal device having low processing performance. However, when the lyrics telop is displayed on the background image stored in the terminal device in the terminal device to which the acoustic data and the lyrics telop data are distributed, the color of the background image and the display color of the lyrics telop are similar. The text in the lyrics telop may be difficult to see.

  The present invention has been made to solve the above problems. The object is to provide a technique for streaming karaoke content in a manner that does not easily hinder the playback of karaoke sound and the display of lyrics telop even if the processing capacity on the terminal device side is low.

  The karaoke distribution server of the present invention includes storage means, request reception means, acquisition means, determination means, determination means, change means, and lyrics distribution means. The storage means includes acoustic data representing the sound of the karaoke content, moving image data including the sound and video of the karaoke content, character information representing the lyrics of the karaoke content, and character information associated with a predetermined display color. For each song. The request accepting unit receives a karaoke content distribution request from the terminal device. The acquisition unit acquires information indicating processing performance related to communication of the terminal device with respect to the distribution request received by the request reception unit. The determining means determines distribution of either the moving image data or the sound data based on the acquired processing performance information.

  The determination means is stored in the storage means based on the background color information indicating the characteristics of the display color of the background image displayed when the sound data is reproduced in the terminal device when the distribution of the sound data is determined. It is determined whether the predetermined display color associated with the character information is similar to the display color feature of the background image. When it is determined that the predetermined display color of the character information and the characteristics of the display color indicated by the background color information are similar, the changing unit changes the display color of the character information from the display color indicated by the background color information. Change to color. The lyrics distribution means distributes character information corresponding to the requested karaoke content to the terminal device. However, when the display color of the character information is changed, the character information of the changed display color is distributed. When the display color of the character information is not changed, the character information associated with the predetermined display color is distributed. To deliver.

  In the present invention, it is possible to select between distribution of moving image data composed of sound and video and distribution of acoustic data with a light processing load in accordance with the processing performance of the terminal device requesting karaoke content. As a result, it is possible to prevent the sound that is the key of the karaoke content from being hindered. Further, when distributing acoustic data, it is possible to distribute lyrics character information in which a display color different from the display color feature of the background image displayed on the terminal device is associated. As a result, it is possible to cause the terminal device to display a lyrics telop having an easy-to-see display color that matches the background image uniquely displayed on the distribution destination terminal device instead of the moving image data.

  In addition, as a method for distributing the character information of the lyrics, specifically, the method is as described in claim 2. That is, when distribution of moving image data is determined, the lyrics distribution means distributes character information associated with a predetermined display color to the terminal device. On the other hand, when the distribution of the acoustic data is determined, the lyrics distribution unit distributes the character information of the display color after the change to the terminal device when the display color of the character information is changed by the change unit, and the character change by the change unit When the display color of the information is not changed, character information associated with a predetermined display color is distributed to the terminal device.

  Further, the distribution of the moving image data or the sound data based on the determination result by the determining means is as described in claim 3. That is, when the distribution of the moving image data is determined by the determining unit, the music distributing unit distributes the moving image data corresponding to the requested karaoke content to the terminal device. On the other hand, when the distribution of the acoustic data is determined by the determination unit, the music distribution unit performs streaming distribution of the acoustic data corresponding to the karaoke content requested for distribution to the terminal device.

  The karaoke distribution server according to claim 4 has the following characteristics. That is, the switching accepting unit receives a switching request for switching to the distribution of the acoustic data from the distribution destination terminal device during the streaming distribution of the moving image data by the music distribution unit. When the switching request is received, the determining means, changing means, music distributing means, and lyrics distributing means are as follows. The determining means determines whether the predetermined display color associated with the character information corresponding to the karaoke content corresponding to the switching request is similar to the display color feature indicated by the background color information. When it is determined that the predetermined display color of the character information and the characteristics of the display color indicated by the background color information are similar, the changing unit changes the display color of the character information from the display color indicated by the background color information. Change to color.

  The music distribution means performs streaming distribution of the acoustic data corresponding to the switching request from the continuation of the moving image data being distributed, instead of distributing the moving image data corresponding to the switching request. The lyric distribution means distributes the character information of the display color after the change to the terminal device when the display color of the character information is changed by the changing means, and predetermined when the display color of the character information is not changed by the changing means. Is distributed to the terminal device.

  By doing in this way, even after the streaming distribution of the moving image data has started once, it is possible to switch to the distribution of the acoustic data in the middle in response to a request from the terminal device of the distribution destination. Moreover, the character information of the display color which matches the background image displayed with a terminal device can be delivered according to the switch to acoustic data. As a result, during streaming playback of moving image data, if there is a possibility that the terminal device may cause a delay or the like for some reason, such as a deterioration in communication status, switching to streaming playback of acoustic data with a light processing burden is hindered. Can be avoided.

  As described in claim 5, the information indicating the processing performance on the side requesting distribution of karaoke content includes information indicating the performance of a communication line used for distributing karaoke content. Thereby, it is possible to determine whether to distribute moving image data or acoustic data for various types of network lines that are widely used for personal terminal devices, according to the communication performance of each type.

  The karaoke distribution server according to claim 6 has the following characteristics. That is, for the background image displayed on the terminal device, the storage means has background color information indicating the characteristics of the display color of the background image and an appropriate display color that is appropriate for the characteristics of the display color indicated by the background color information. The color definition information for defining the character color information indicating is stored. The determining means determines whether the predetermined display color of the character information is similar to the display color feature indicated by the background color information of the color definition information. When it is determined that the predetermined display color of the character information and the characteristics of the display color indicated by the background color information are similar, the changing means changes the display color of the character information to the appropriate display color indicated by the color definition information. Change to By doing in this way, it is possible to display the lyrics telop of the optimum display color on the terminal device in accordance with the characteristics of the display color of the background image displayed on the distribution destination terminal device.

  The karaoke distribution server according to claim 7 has the following characteristics. In other words, the character information for each piece of music stored in the storage means is associated with a display color determined corresponding to the video of the moving image data for each piece of music. The determining means determines whether the display color for each music set for the character information corresponding to the music of the karaoke content requested for distribution is similar to the display color feature indicated by the background color information. . By doing in this way, when a different display color is associated with the text information of the lyrics for each song as a default, whether the display color for each song matches the background image displayed on the terminal device Can be judged.

  In addition, this invention can also be implement | achieved in the aspect of the terminal device which receives karaoke content from a karaoke delivery server, as described in Claim 8. The terminal device according to the present invention includes storage means, acquisition request means, lyrics reception means, music reception means, determination means, change means, and playback control means. The storage means stores a background image displayed when the karaoke content is reproduced, and background color information indicating characteristics of the display color of the background image. The acquisition requesting unit is configured to acquire an acquisition request for either data of moving image data including sound and video of karaoke content or sound data representing sound of karaoke content based on information indicating processing performance related to communication. Perform to the distribution server. The lyrics receiving means receives character information representing the lyrics of the karaoke content requested to be acquired and is associated with a predetermined display color from the karaoke distribution server.

  When the acquisition request for the acoustic data is made, the music receiving means receives the streaming of the acoustic data corresponding to the karaoke content requested for acquisition from the karaoke distribution server. When a request for acquisition of acoustic data is made, the judging means displays a predetermined display color associated with the character information received by the lyrics receiving means and a display indicated by background color information stored in the storage means Determine if the color features are similar. When it is determined that the predetermined display color of the character information and the characteristics of the display color indicated by the background color information are similar, the changing unit changes the display color of the character information from the display color indicated by the background color information. Change to color. The reproduction control means performs streaming reproduction of the received acoustic data, and displays the lyrics telop represented by the received character information on the display means together with the background image stored in the storage means in accordance with the reproduction of the acoustic data. Let However, the reproduction control means displays the lyrics telop using the changed display color when the display color is changed by the changing means, and uses the predetermined display color when the display color is not changed by the changing means. To display the lyrics telop.

  Moreover, as described in claim 9, the present invention can also be realized in the form of a program executed on a computer or a storage medium for storing the program.

The block diagram which shows schematic structure of a karaoke system. (A) Explanatory drawing which shows an example of telop color definition information, (b) Explanatory drawing which shows an example of background color definition information. The flowchart which shows the procedure of the server process of 1st Embodiment. The flowchart which shows the procedure of the delivery judgment process of 1st Embodiment. The flowchart which shows the procedure of the telop color change process of 1st Embodiment. 6 is a flowchart showing a procedure of reproduction processing according to the first embodiment. The flowchart which shows the procedure of the reception process of 1st Embodiment. The flowchart which shows the procedure of the terminal process of 2nd Embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment, It is possible to implement in various aspects.
[Description of karaoke system configuration]
As shown in FIG. 1, the embodiment karaoke system includes a karaoke distribution server 10 and a terminal device 20. The karaoke distribution server 10 and the terminal device 20 are communicably connected via the Internet. In FIG. 1, only one terminal device 20 is shown, but there may be more terminal devices 20 than this.

  The karaoke distribution server 10 constitutes a computer system. As a hardware configuration, the karaoke distribution server 10 includes a control unit 11, a storage unit 12 that stores various types of information, a communication unit 13 that controls communication via the Internet, and the like. The control unit 11 is an information processing device mainly composed of a CPU, a ROM, a RAM, and the like, and controls the entire apparatus. The control unit 11 executes various processes based on programs and data read from the ROM and the storage unit 12. The storage unit 12 is a mass storage device such as a hard disk drive. The storage unit 12 stores a program to be executed by the control unit 11 and data used at the time of execution. In addition, the storage unit 12 stores a karaoke database in which a lot of karaoke content data corresponding to individual karaoke songs is recorded.

  Karaoke content data includes, for each karaoke piece of music, video data including the sound of the karaoke piece and the background image displayed when the sound is output, sound data representing the sound of the karaoke piece, Telop data for displaying lyrics as telops. As the moving image data, digital data conforming to a well-known audio / video compression format is used. As the acoustic data, digital data conforming to a well-known audio compression format is used. The moving image data including the sound and the background image has a larger data amount than the sound data including only sound.

  The telop data includes character information representing a character string of lyrics, control data for defining a layout for displaying lyrics, display timing, and the like. In addition, as illustrated in FIG. 2A, the telop data for each karaoke piece is easy to see even if it is displayed overlaid on the background video according to the color characteristics of the background video of the corresponding video data. A suitable color is associated in advance as a default display color. A table of telop color definition information as exemplified in FIG. 2A is recorded in the storage unit 12 in advance. In this telop color definition information, a lyrics telop ID that is identification information of telop data for each song and a default display color of each telop data are described in association with each other.

  Further, as illustrated in FIG. 2B, for a plurality of background images stored in the terminal device 20, information representing the color characteristics of the individual background images and the respective background images are displayed in an overlapping manner. Also, information indicating the color of the appropriate lyrics telop that is easy to see is associated in advance. In the first embodiment to be described later, a table of background color definition information exemplified in FIG. 2B is recorded in the storage unit 12 in advance. The background color definition information includes the background image number that is identification information of the background image, the display color that classifies the characteristics of the color of the background image, and the color of the lyrics telop that is suitable for viewing the background image. Appropriate colors to be expressed are described in association with each other.

  In response to the distribution request from the terminal device 20, the karaoke distribution server 10 distributes the data of the karaoke content recorded in the karaoke database to the terminal device 20 that is the distribution request source via the Internet. When distributing karaoke content data to the terminal device 20, either moving image data or acoustic data is distributed by streaming according to the processing performance related to communication on the terminal device 20 side. Also, the karaoke distribution server 10 distributes telop data corresponding to the karaoke song requested to be distributed to the terminal device 20 that is the distribution request source. A detailed procedure of a series of processes related to the distribution of karaoke contents will be described later.

  The terminal device 20 has a function of transmitting a karaoke content distribution request selected by the user to the karaoke distribution server 10 and receiving and reproducing the karaoke content distributed from the karaoke distribution server 10. The terminal device 20 is embodied in various information processing devices such as a business karaoke device installed in a karaoke store, a personal computer owned by an individual user, a high-function mobile phone (so-called smartphone), and a tablet computer. It becomes. The terminal device 20 includes a control unit 21, a storage unit 22, a reproduction processing unit 23, a display unit 24, an audio output unit 25, an operation unit 26, a communication unit 27, and the like as a hardware configuration.

  The control unit 21 is an information processing device configured mainly with a CPU, ROM, RAM, and the like, and controls the entire apparatus. The control unit 21 executes various processes based on programs and data read from the ROM and the storage unit 22. The storage unit 22 is a mass storage device such as a hard disk drive or a rewritable nonvolatile semiconductor memory. The storage unit 22 stores a program to be executed by the control unit 11 and data used at the time of execution. The storage unit 22 stores background image data displayed on the display unit 24 as a background when the karaoke content received from the karaoke distribution server 10 is reproduced. In the second embodiment to be described later, a background color definition information table illustrated in FIG. 2B is recorded in the storage unit 22 in advance.

  The reproduction processing unit 23 reproduces the moving image data or audio data of the karaoke content received from the karaoke distribution server 10 and outputs the reproduced video signal and audio signal. The reproduction of the karaoke content is performed by streaming that simultaneously reproduces the moving image data or the sound data stream transmitted from the karaoke distribution server 10. The display unit 24 is a display device such as a liquid crystal display, for example, and displays various images. The display unit 24 displays images such as a background image obtained by reproducing moving image data of karaoke content, a background image based on background image data stored in the storage unit 22, and a lyrics telop representing lyrics of karaoke music. . The audio output unit 25 outputs the sound signal of the music reproduced by the reproduction processing unit 23 instead of sound. The operation unit 26 includes various input buttons, a touch panel, and the like, and inputs an operation signal corresponding to the input operation received from the operator to the control unit 21.

  The communication unit 27 is a communication interface for performing information communication by connecting the terminal device 20 to the Internet. In the present embodiment, it is assumed that a communication interface using communication lines of various communication standards having different communication speeds is applied as the communication unit 27 for each terminal device 20. For example, as a data communication standard for mobile communication terminals, third generation mobile communication system (3G: 3rd Generation), LTE (Long Term Evolution), fourth generation mobile communication system (4G: 4th Generation), wireless LAN, and the like can be cited. It is done. Moreover, broadband internet connection (for example, ADSL, CATV, FTTH) etc. is illustrated as a data communication standard for facilities. In the present embodiment, it is determined whether the karaoke content distributed by the karaoke distribution server 10 is video data or acoustic data according to the performance of the communication line used by the communication unit 27 for Internet connection.

[First Embodiment: Explanation of Server Processing]
In the first embodiment, the procedure of server processing executed by the control unit 11 of the karaoke distribution server 10 will be described with reference to the flowchart of FIG. This process is repeatedly executed when the karaoke distribution server 10 is in operation.

  In S <b> 100, the control unit 11 determines whether or not a karaoke content distribution request is received from the terminal device 20. The distribution request transmitted from the terminal device 20 includes identification information (for example, music number) of the karaoke content music and information indicating the type of communication line used by the terminal device 20 to connect to the Internet. include. The information indicating the type of communication line corresponds to information indicating the processing performance related to the communication of the terminal device 20. When the distribution request has not been received from the terminal device 20 (S100: NO), the control unit 11 repeats S100. On the other hand, when the distribution request is received from the terminal device 20 (S100: YES), the control unit 11 proceeds to S102.

  In S102, a distribution determination process for determining whether to distribute the moving image data of the karaoke content requested to be distributed or to distribute the acoustic data is executed. Here, the procedure of the delivery determination process of S102 will be described with reference to the flowchart of FIG. In S200, the control unit 11 determines whether or not the type of the communication line indicated by the distribution request received from the terminal device 20 is 3G. In this embodiment, 3G is positioned as the slowest communication line among the communication lines used by the terminal device 20 for Internet connection. For this reason, when the type of the communication line indicated by the distribution request is 3G, the communication speed is low (processing performance is low), an affirmative determination is made in S200, and the process proceeds to S202. On the other hand, if the type of the communication line indicated by the distribution request is not 3G, the communication speed is assumed to be high (processing performance is high), a negative determination is made in S200, and the process proceeds to S206.

  In S202, which proceeds when an affirmative determination is made in S200, the control unit 11 determines whether or not the size of the moving image data corresponding to the requested karaoke content is 100 MB or more. When the size of the moving image data is 100 MB or more (S202: YES), the control unit 11 proceeds to S204. On the other hand, when the size of the moving image data is less than 100 MB (S202: NO), the control unit 11 proceeds to S206. In S204, which proceeds when an affirmative determination is made in S202, the control unit 11 determines the distribution of the acoustic data. On the other hand, in S206 which proceeds when a negative determination is made in S200 or S202, the control unit 11 determines distribution of the moving image data. The control part 11 complete | finishes this process after S204 and S206.

  Returning to the flowchart of FIG. In S104, the control unit 11 branches the process depending on whether the data determined to be distributed in S102 is moving image data or acoustic data. When the distribution of the acoustic data is determined (S104: sound), the control unit 11 proceeds to S106. In S <b> 106, a telop color changing process for changing the display color of the lyrics telop in accordance with the background image displayed on the terminal device 20 is executed. Here, the procedure of the telop color changing process in S106 will be described with reference to FIG.

  In S300, the control unit 11 specifies the background image that the terminal device 20 displays when reproducing the acoustic data. Specifically, the terminal device 20 is inquired about the background image number which is the identification information of the background image. In response to the inquiry from the karaoke distribution server 10, the terminal device 20 replies with a background image number corresponding to the background image displayed at the time of reproducing the acoustic data. In S302, the control unit 11 determines whether or not the display color associated with the telop data to be distributed corresponding to the requested karaoke content is similar to the display color of the background image specified in S300. Specifically, the display color associated with the telop data to be distributed is specified with reference to the telop color definition information illustrated in FIG. Also, the display color indicating the color characteristics of the specified background image is specified with reference to the background color definition information exemplified in FIG. Then, the display color of the telop specified from the telop color definition information is compared with the display color of the background image specified from the background color definition information, and if both match or are similar colors, it is determined that they are similar.

  When the display color associated with the telop data to be distributed is similar to the display color of the specified background image (S302: YES), the control unit 11 proceeds to S304. In S304, the control unit 11 refers to the background color definition information, changes the display color associated with the telop data to be distributed to an appropriate color corresponding to the identified background image, and ends this processing. To do. On the other hand, if it is determined in S302 that the display color associated with the telop data to be distributed is not similar to the display color of the specified background image (S302: NO), the control unit 11 ends this process. .

  Returning to the flowchart of FIG. In S108, the control unit 11 transmits the telop data corresponding to the requested karaoke content to the terminal device 20 in association with the display color reflecting the result of the telop color change process in S106. That is, when the display color of the telop data is changed to the appropriate color of the background image in S106, the telop data is transmitted to the terminal device 20 in association with the changed appropriate color. On the other hand, if the display color of the telop data is not changed in S106, the telop data is transmitted to the terminal device 20 in association with the default display color.

  In next S110, the stream of acoustic data of the karaoke content requested for distribution is sequentially transmitted to the terminal device 20. In S112, the control unit 11 determines whether or not to end the transmission of the stream of acoustic data. When continuing transmission (S112: NO), the control part 11 returns to S110, and continues transmission of the stream of acoustic data. On the other hand, when the transmission is finished (S112: YES), the control unit 11 finishes this process.

  On the other hand, when the distribution of moving image data is determined in S104 (S104: moving image), the control unit 11 proceeds to S114. In S <b> 114, the control unit 11 transmits the telop data corresponding to the requested karaoke content to the terminal device 20 in association with the default display color. In next S 116, the stream of moving image data of the karaoke content requested for distribution is sequentially transmitted to the terminal device 20. In S118, the control unit 11 determines whether or not to end the transmission of the moving image data stream. When the transmission is continued (S118: NO), the control unit 11 proceeds to S120. On the other hand, when the transmission is finished (S118: YES), the control unit 11 finishes this process.

  In S120, which proceeds when the transmission is continued, the control unit 11 determines whether a switching request for switching the stream to be transmitted from the moving image data to the acoustic data is received from the terminal device 20 to which the moving image data is distributed. When the switching request has not been received (S120: NO), the control unit 11 returns to S116 and continues to transmit the moving image data stream. On the other hand, when the switching request is received (S120: YES), the control unit 11 proceeds to S106.

  Thereafter, the control unit 11 executes the above-described telop color change process (see FIG. 5) in S106, and transmits telop data reflecting the change in display color to the terminal device 20 in S108. In S110, transmission of the moving image data stream is interrupted, and transmission of the acoustic data stream is started from a reproduction position corresponding to the continuation of the transmitted moving image data stream. Thereafter, the control unit 11 continues to transmit the acoustic data stream until it is determined in S112 that transmission is to be ended, and when it is determined that transmission is to be ended (S112: YES), this process ends.

[First Embodiment: Description of Reproduction Processing]
In the first embodiment, the procedure of the reproduction process executed by the control unit 21 of the terminal device 20 will be described with reference to the flowchart of FIG. This process is executed when the execution of a function for reproducing karaoke content is instructed.

  In S400, the control unit 21 determines whether or not the music selection of the karaoke content for which reproduction is requested has been completed. The music selection of the karaoke content is received from the user via the operation unit 26. When the music selection of the karaoke content is completed (S400: YES), the control unit 21 proceeds to S402. On the other hand, when the music selection of the karaoke content is not completed, the control unit 21 repeats S400. In S <b> 402, the control unit 21 transmits a distribution request for content requesting distribution of the selected karaoke content to the karaoke distribution server 10. The distribution request transmitted here includes identification information (for example, music number) of the selected karaoke content and information indicating the type of communication line used by the communication unit 27 of the terminal device 20 for Internet connection. . When the distribution request is transmitted to the karaoke distribution server 10, telop data is transmitted from the karaoke distribution server 10, and the notified moving image data or audio data stream is transmitted.

  In the next S404, the control unit 21 transmits the distribution request, and whether the data transmitted from the karaoke distribution server 10 according to the determination result of the distribution determination process (see FIG. 4) is moving image data or acoustic data. The process branches depending on whether or not. When the acoustic data is transmitted (S404: sound), the control unit 21 proceeds to S406. In S406, the control unit 21 determines whether or not the received amount of the stream of acoustic data stored in the buffer memory list exceeds the reproduction time of 3 seconds. When the received amount of the acoustic data stream is equal to or shorter than the reproduction time of 3 seconds (S406: NO), the control unit 21 repeats S406. On the other hand, when the received amount of the stream of acoustic data exceeds the reproduction time for 3 seconds (S406: YES), the control unit 21 proceeds to S408. In step S <b> 408, the control unit 21 sequentially reproduces the received audio data stream in the reproduction processing unit 23. The sound of the karaoke content reproduced from the sound data is output from the sound output unit 25. Further, the control unit 21 causes the display unit 24 to display a predetermined background image stored in the storage unit 22. Furthermore, in synchronization with the reproduction of the acoustic data, the control unit 21 draws the image of the lyrics telop indicated by the telop data received from the karaoke distribution server 10 with the display color associated with the telop data, and Overlay on the image.

  In next S410, the control unit 21 determines whether or not to end the reproduction of the karaoke content. When continuing the reproduction of the karaoke content (S410: NO), the control unit 21 returns to S408 and continues the reproduction of the acoustic data and the display of the background image and the lyrics telop image. On the other hand, when the reproduction of the karaoke content is finished (S410: YES), the control unit 21 finishes this process.

  On the other hand, when moving image data is transmitted in S404 (S404: moving image), the control unit 21 proceeds to S412. In S412, the control unit 21 determines whether or not the received amount of the moving image data stream stored in the buffer memory list exceeds the reproduction time of 10 seconds. When the received amount of the moving image data stream does not exceed the reproduction time of 10 seconds (S412: NO), the control unit 21 repeats S412. On the other hand, when the received amount of the moving image data stream is equal to or shorter than the reproduction time of 10 seconds (S412: YES), the control unit 21 proceeds to S414.

  In S <b> 414, the control unit 21 sequentially reproduces the received moving image data stream in the reproduction processing unit 23. The background image reproduced from the moving image data is displayed on the display unit 24, and the sound reproduced from the moving image data is output from the audio output unit 25. In addition, in synchronization with the reproduction of the video data, the control unit 21 draws the image of the lyrics telop indicated by the telop data received from the karaoke distribution server 10 in the display color associated with the telop data, The video data is displayed overlaid on the reproduced background video. In next S416, the control unit 21 determines whether or not to end the reproduction of the karaoke content. When continuing to reproduce the karaoke content (S416: NO), the control unit 21 proceeds to S418. On the other hand, when the reproduction of the karaoke content is finished (S416: YES), the control unit 21 finishes this process.

  In S418, which proceeds when the reproduction of the karaoke content is continued, the control unit 21 determines whether or not the received amount of the moving image data stream accumulated in the buffer memory list exceeds the reproduction time of 5 seconds. . When the received amount of the moving image data stream exceeds the reproduction time of 5 seconds (S418: YES), the control unit 21 returns to S414 and continues the reproduction of the moving image data and the display of the lyrics telop image. On the other hand, when the received amount of the moving image data stream is equal to or shorter than the reproduction time of 5 seconds (S418: NO), the control unit 21 proceeds to S420. In S420, the control unit 21 transmits a switching request for switching from distribution of moving image data to distribution of acoustic data to the karaoke distribution server 10, and the process proceeds to S406. Thereafter, in S406 to S410, as described above, the control unit 21 performs sound reproduction and display of the background image and the lyrics telop image based on the sound data stream and telop data received from the karaoke distribution server 10.

[Description of reception processing]
A procedure of reception processing executed by the control unit 21 of the terminal device 20 will be described with reference to the flowchart of FIG. This process is a process executed when a karaoke content distribution request is transmitted in the above-described reproduction process (FIG. 6).

  In S500, when the telop data is received from the karaoke distribution server 10 (S500: YES), the control unit 21 proceeds to S502. In S502, the control unit 21 stores the received telop data in a predetermined area of the memory.

On the other hand, in S504, when a stream of moving image data is received from the karaoke distribution server 10 (S504: YES), the control unit 21 proceeds to S506. In S506, the control unit 21 sequentially adds the received moving image data stream to the list of the buffer memory. The buffer memory is a storage area for temporarily storing an unreproduced stream received from the karaoke distribution server 10. Streams stored in the buffer memory are sequentially reproduced, and are erased from the buffer memory in order from the reproduced streams.
On the other hand, in S508, when a stream of acoustic data is received from the karaoke distribution server 10 (S508: YES), the control unit 21 proceeds to S510. In S510, the control unit 21 sequentially adds the received stream of acoustic data to the list of the buffer memory.

[Second Embodiment: Explanation of Terminal Processing]
In the second embodiment, a procedure of terminal processing executed by the control unit 21 of the terminal device 20 will be described with reference to the flowchart of FIG. This process is executed when the execution of a function for reproducing karaoke content is instructed. The second embodiment is different from the first embodiment in that the terminal device 20 side makes a distribution request for either moving image data or acoustic data for karaoke content data distributed by the karaoke distribution server 10.

  In S600, the control unit 21 determines whether or not the music selection of the karaoke content for which reproduction is requested has been completed. The music selection of the karaoke content is received from the user via the operation unit 26. When the music selection of the karaoke content is completed (S600: YES), the control unit 21 proceeds to S602. On the other hand, when the music selection of the karaoke content is not completed, the control unit 21 repeats S600. In S602, the control unit 21 determines whether the type of the communication line to which the communication unit 27 is connected is 3G. In this embodiment, 3G is positioned as the slowest communication line among the communication lines used by the terminal device 20 for Internet connection. Therefore, when the type of the communication line indicated by the distribution request is 3G, it is treated as a communication speed being low (processing performance is low), an affirmative determination is made in S602, and the process proceeds to S604. On the other hand, if the type of the communication line indicated by the distribution request is not 3G, the communication speed is assumed to be high (processing performance is high), a negative determination is made in S604, and the flow proceeds to S618.

  In S604, which proceeds when an affirmative determination is made in S602, the control unit 21 transmits, to the karaoke distribution server 10, a distribution request for content that requests distribution of acoustic data corresponding to the selected karaoke content. The distribution request transmitted here includes identification information (for example, music number) of the selected karaoke content and information specifying distribution of acoustic data. On the other hand, the karaoke distribution server 10 transmits a stream of telop data and acoustic data corresponding to the karaoke content requested to be distributed. Note that the telop data transmitted here is associated with a default display color indicated by the telop color definition information (see FIG. 2A).

  In the next S606, the control unit 21 acquires the telop data transmitted from the karaoke distribution server 10. In step S608, the control unit 21 determines whether or not the display color associated with the telop data acquired in step S604 is similar to the display color of the background image displayed when the selected karaoke content is played. To do. Specifically, the display color indicating the color characteristics of the background image is specified with reference to the background color definition information exemplified in FIG. Then, the display color associated with the received telop data is compared with the display color of the background image specified from the background color definition information, and if they match or are similar colors, it is determined that they are similar.

  When the display color associated with the received telop data is similar to the display color of the background image (S608: YES), the control unit 21 proceeds to S610. In step S610, the control unit 21 refers to the background color definition information, and changes the display color associated with the received telop data to an appropriate color corresponding to the background image. On the other hand, if it is determined in S608 that the display color associated with the received telop data is not similar to the display color of the background image (S608: NO), the control unit 21 proceeds to S612.

  In S <b> 612, the control unit 21 receives a stream of acoustic data from the karaoke distribution server 10. Then, the received stream of acoustic data is sequentially added to the list of the buffer memory that temporarily stores the unreproduced stream. In S <b> 614, the control unit 21 sequentially reproduces the received audio data stream in the reproduction processing unit 23. The sound of the karaoke content reproduced from the sound data is output from the sound output unit 25. Further, the control unit 21 causes the display unit 24 to display a predetermined background image stored in the storage unit 22. Further, in synchronization with the reproduction of the acoustic data, the control unit 21 draws the lyrics telop image indicated by the telop data acquired in S606 in the display color associated with the telop data and displays it on the background image. Overlapping display. However, when the lyrics telop image is drawn, if the display color is changed in S610, the changed display color is used, and if the display color is not changed, the default display color is used.

  In next S616, the control unit 21 determines whether or not to end the reproduction of the karaoke content. When the reproduction of the karaoke content is continued (S616: NO), the control unit 21 returns to S612. On the other hand, when the reproduction of the karaoke content is finished (S616: YES), the control unit 21 finishes this process.

  On the other hand, in S <b> 618, which proceeds when a negative determination is made in S <b> 602, a distribution request for content requesting distribution of moving image data corresponding to the selected karaoke content is transmitted to the karaoke distribution server 10. The distribution request transmitted here includes identification information (for example, music number) of the selected karaoke content and information specifying distribution of moving image data. On the other hand, the karaoke distribution server 10 transmits a stream of telop data and moving image data corresponding to the karaoke content requested to be distributed. Note that the telop data transmitted here is associated with a default display color indicated by the telop color definition information (see FIG. 2A).

  In next S620, the control unit 21 acquires the telop data transmitted from the karaoke distribution server 10. In S <b> 622, the control unit 21 receives a stream of moving image data from the karaoke distribution server 10. Then, the received moving image data stream is sequentially added to the list of the buffer memory that temporarily stores the unreproduced stream. In S624, the control unit 21 sequentially reproduces the received moving image data stream in the reproduction processing unit 23. The background image reproduced from the moving image data is displayed on the display unit 24, and the sound reproduced from the moving image data is output from the audio output unit 25. In addition, in synchronization with the reproduction of the moving image data, the control unit 21 draws the image of the lyrics telop indicated by the telop data acquired in S620 in the default display color associated with the telop data, and the moving image data Is overlaid on the played background image. In next step S626, the control unit 21 determines whether or not to end the reproduction of the karaoke content. When the reproduction of the karaoke content is continued (S626: NO), the control unit 21 returns to S622. On the other hand, when the reproduction of the karaoke content is finished (S626: YES), the control unit 21 finishes this process.

[effect]
The karaoke system of the embodiment has the following effects.
Depending on the processing performance (for example, the type of the communication line) related to the communication of the terminal device 20, it is possible to selectively use distribution of moving image data composed of sound and background video and distribution of acoustic data with a light processing load. Thereby, irrespective of the processing performance of the terminal device 20, it is possible to prevent the sound reproduction that is the key of the karaoke content from being hindered.

  In the first embodiment, when the karaoke distribution server 10 distributes the acoustic data, the display color of the telop data can be changed to an appropriate color that is easy to see with respect to the display color of the background image displayed on the terminal device 20. In the second embodiment, the terminal device 20 can change the display color of the telop data received from the karaoke distribution server 10 to an appropriate color that is easy to see with respect to the display color of the background image displayed when reproducing the acoustic data. By doing in this way, the terminal device 20 can display the lyrics telop drawn by the suitable color which is easy to see with respect to the background image which the terminal device 20 displays uniquely instead of the background image by moving image data.

  In the first embodiment, even after the streaming distribution of moving image data has started, if the reception of moving image data is slow in the terminal device 20, the sound is transmitted from the middle in response to a switching request from the terminal device 20. You can switch to data distribution. In addition, telop data in which suitable colors that are easy to see are associated with the background image displayed on the terminal device 20 can be distributed in accordance with the switching to the acoustic data. As a result, when there is a possibility of delaying playback or the like during streaming playback of moving image data, switching to streaming playback of acoustic data with a light processing burden can be avoided.

[Correspondence with configuration described in claims]
The correspondence between the configuration described in the embodiment and the configuration described in the claims is as follows.
(First Embodiment) The storage unit 12 corresponds to storage means (claim 1). The control unit 11 and the communication unit 13 correspond to a request reception unit, an acquisition unit, a music distribution unit, a lyrics distribution unit, and a switching reception unit. The control unit 11 corresponds to determination means, determination means (Claim 1), and change means (Claim 1).

  (Second Embodiment) The storage unit 22 corresponds to storage means (claim 8). The control unit 21 and the communication unit 27 correspond to an acquisition request unit, a lyrics reception unit, and a music reception unit. The control unit 21 corresponds to determination means (Claim 8), change means (Claim 8), and reproduction control means. The display unit 24 corresponds to display means.

[Modification]
In the above-described embodiment, as the information indicating the processing performance related to the communication of the terminal device 20, the distribution of moving image data or the distribution of acoustic data is performed based on the information indicating the type of communication line used by the terminal device 20 for Internet connection. An example of determining either one has been described. For example, information indicating the communication speed (bit rate) between the karaoke distribution server 10 and the terminal device 20 and the processing performance of the terminal device 20 is acquired, and the video data is based on the acquired information. Either one of the distribution or the acoustic data distribution may be determined. Examples of information indicating the processing performance of the terminal device 20 include the type of operation system (version, name, etc.) and the performance of the CPU (type, clock frequency, number of cores, etc.).

  DESCRIPTION OF SYMBOLS 10 ... Karaoke distribution server, 11 ... Control part, 12 ... Storage part, 13 ... Communication part, 20 ... Terminal device, 21 ... Control part, 22 ... Storage part, 23 ... Reproduction processing part, 24 ... Display part, 25 ... Audio | voice Output unit, 26 ... operation unit, 27 ... communication unit.

Claims (9)

Sound data representing the sound of karaoke content, video data including sound and video of karaoke content, character information representing lyrics of karaoke content, and character information associated with a predetermined display color, for each song Storage means for storing in,
Request accepting means for receiving a distribution request for karaoke content from the terminal device;
An acquisition unit that acquires information indicating processing performance related to communication of the terminal device with respect to the distribution request received by the request reception unit;
Determining means for determining distribution of either the moving image data or the acoustic data based on the processing performance information acquired by the acquiring means;
When distribution of the acoustic data is determined by the determining unit, the storage unit stores the acoustic data based on background color information indicating characteristics of a display color of a background image displayed when the acoustic data is reproduced on the terminal device. Determining means for determining whether a predetermined display color associated with stored character information is similar to a display color feature of the background image;
When the determination means determines that the predetermined display color of the character information is similar to the display color feature indicated by the background color information, the display color of the character information is indicated by the background color information. Changing means for changing to a different color from the displayed color;
The character information corresponding to the karaoke content requested to be distributed, and when the display color of the character information is changed by the changing means, the character information of the changed display color is distributed to the terminal device, and the change When the display color of the character information is not changed by the means, the lyrics distribution means for distributing the character information associated with the predetermined display color to the terminal device;
A karaoke distribution server comprising: The karaoke distribution server according to claim 1,
The lyric distribution unit distributes the character information associated with the predetermined display color to the terminal device when the determination unit determines the distribution of the moving image data, while the determination unit determines the sound information. When the distribution of data is determined, when the display color of the character information is changed by the changing unit, the character information of the display color after the change is distributed to the terminal device, and the character information is updated by the changing unit. When the display color is not changed, delivering the character information associated with the predetermined display color to the terminal device;
Karaoke distribution server characterized by In the karaoke distribution server according to claim 1 or 2,
When distribution of the moving image data is determined by the determining unit, streaming data of the moving image data corresponding to the requested karaoke content is streamed to the terminal device, while distribution of the acoustic data is determined by the determining unit. A music distribution means for streaming distribution of acoustic data corresponding to the distribution-requested karaoke content to the terminal device;
Karaoke distribution server characterized by The karaoke distribution server according to claim 3,
During the streaming distribution of the video data by the music distribution means, the switching reception means for receiving a switching request for switching to the distribution of acoustic data from the terminal device of the distribution destination,
When the switching request is received by the switching receiving means,
The determination means determines whether a predetermined display color of the character information corresponding to the karaoke content corresponding to the switching request is similar to a display color feature indicated by the background color information,
When the determining unit determines that the predetermined display color of the character information is similar to the characteristic of the display color indicated by the background color information, the changing unit changes the display color of the character information. Change to a color different from the display color indicated in the background color information,
The music distribution means, instead of distributing the moving image data corresponding to the switching request, streaming the acoustic data corresponding to the switching request from the continuation of the moving image data being distributed,
The lyrics distribution means distributes the character information of the display color after the change to the terminal device when the display color of the character information is changed by the changing means, and the display color of the character information is changed by the changing means. If not, delivering the character information associated with the predetermined display color to the terminal device;
Karaoke distribution server characterized by In the karaoke delivery server according to any one of claims 1 to 4,
The acquisition means acquires information indicating the performance of a communication line used for distributing karaoke content as information indicating the processing performance;
Karaoke distribution server characterized by In the karaoke delivery server according to any one of claims 1 to 5,
For the background image displayed when the acoustic data is played back in the terminal device, the storage means includes background color information indicating characteristics of the display color of the background image, and a display color indicated by the background color information. Color definition information that defines character color information indicating an appropriate display color that is appropriate for the characteristics of
The determination means determines whether the predetermined display color of the character information is similar to the display color feature indicated by the background color information of the color definition information;
When the determining unit determines that the predetermined display color of the character information is similar to the display color feature indicated by the background color information, the changing unit changes the display color of the character information, Changing to an appropriate display color indicated by the color definition information;
Karaoke distribution server characterized by The karaoke distribution server according to any one of claims 1 to 6,
The character information for each piece of music stored in the storage means is associated with a display color determined corresponding to the video of the video data for each piece of music,
The determination means is similar in the display color for each piece of music defined for the character information corresponding to the music of the karaoke content requested for distribution and the characteristics of the display color indicated by the background color information. To determine whether
Karaoke distribution server characterized by Storage means for storing a background image displayed during playback of karaoke content, and background color information indicating characteristics of the display color of the background image;
Based on the information indicating the processing performance related to communication, an acquisition request for either data of moving image data including sound and video of karaoke content or sound data representing sound of karaoke content is sent to the karaoke distribution server. Acquisition request means to perform;
Text information representing the lyrics of the karaoke content requested to be acquired by the acquisition request means, and text information associated with a predetermined display color from the karaoke distribution server;
When an acquisition request for the acoustic data is made by the acquisition request means, music reception means for streaming receiving acoustic data corresponding to the karaoke content requested for acquisition from the karaoke distribution server;
When an acquisition request for the acoustic data is made by the acquisition request unit, a predetermined display color associated with the character information received by the lyrics reception unit and background color information stored in the storage unit Determining means for determining whether the display color feature indicated by is similar,
If the determination means determines that the predetermined display color of the character information is similar to the display color feature indicated by the background color information, the display color of the character information is indicated by the background color information. Changing means for changing to a different color from the displayed color;
Streaming playback of the acoustic data received by the music receiving means, and when the display color is changed by the changing means, the lyrics telop represented by the character information is changed in accordance with the playback of the acoustic data. Reproduction control means for displaying on the display means together with the background image stored in the storage means using the predetermined display color when the display color is not changed by the changing means using the display color;
A terminal device comprising: Based on the information indicating the processing performance related to communication, an acquisition request for either data of moving image data including sound and video of karaoke content or sound data representing sound of karaoke content is sent to the karaoke distribution server. Acquisition request procedures to be performed;
Text information representing the lyrics of the karaoke content requested for acquisition in the acquisition request procedure, and receiving the text information associated with a predetermined display color from the karaoke distribution server;
When an acquisition request for the acoustic data is made in the acquisition request procedure, the music reception procedure for streaming receiving acoustic data corresponding to the karaoke content requested for acquisition from the karaoke distribution server;
When an acquisition request for the acoustic data is made in the acquisition request procedure, a predetermined display color associated with the character information received by the lyrics reception procedure and a predetermined background displayed when the karaoke content is reproduced A determination procedure for determining whether the display color characteristics of the image are similar,
When it is determined in the determination procedure that the predetermined display color of the character information is similar to the characteristics of the display color of the background image, the display color of the character information is the display color indicated by the background color information Change procedure to change to a different color,
Streaming playback of the acoustic data received in the music reception procedure, and in response to the playback of the acoustic data, the lyrics telop represented by the character information is changed if the display color is changed in the change procedure Using a display color, if the display color is not changed in the change procedure, using the predetermined display color, a reproduction control procedure for displaying on the display means together with the background image,
A program that causes a computer to execute.

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