JP2010054805A - Data reproduction system and terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data reproduction system and terminals, in which data shared by a plurality of terminals are reproduced in each terminal, while data communication processing between the terminals is performed in a short period of time. <P>SOLUTION: The data reproduction system includes the plurality of terminals. Each terminal includes: a data storage section 12 storing reproducible data; a list transmitting section 14 for transmitting the list of the data stored in the data storage section 12 to other terminals; a list receiving section 16 for receiving the list transmitted from the other terminal; a shared reproduction list creating section 17 for creating the list of overlapping data as a shared reproduction list, by comparing the list received by the list receiving section 16 with the list of the data stored in the data storage section 12; and a data reproduction section 18 for reproducing the data stored in the data storage section 12 on the basis of the shared reproduction list. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a data reproduction system and terminal for reproducing data shared by a plurality of terminals.

2. Description of the Related Art Conventionally, a data reproducing apparatus that shares data among a plurality of terminals and reproduces data at each terminal is known (for example, see Patent Document 1).
In the above technique, first, a terminal set as a controller terminal among a plurality of terminals transmits, for example, a keyword indicating a shooting location to another terminal. Next, the other terminal extracts data related to the keyword, and returns a list of the extracted data to the controller terminal. Then, the controller terminal creates a shared reproduction list based on the returned list, and transmits this shared reproduction list to other terminals. In this way, the shared playlist is set for all terminals, and each terminal plays back data based on the set shared playlist.
JP 2007-13704 A

  However, the above technique requires at least three times of data communication between the controller terminal and other terminals before setting the shared playlist to all terminals, and there is a disadvantage that it takes a long time for data communication. It was.

  The present invention has been made in view of the above circumstances, and a data reproduction system and terminal capable of performing data communication processing between terminals in a short time while enabling reproduction of data shared by a plurality of terminals. The purpose is to provide.

In order to achieve the above object, the present invention employs the following means.
The present invention includes a plurality of terminals, and each of the terminals stores a data storage unit that stores reproducible data, and a list transmission unit that transmits a list of data stored in the data storage unit to the other terminals And a list receiving unit that receives a list transmitted from another terminal, a list received by the list receiving unit and a list of data stored in the data storage unit, A shared playlist creation unit for creating a list as a shared playlist;
There is provided a data reproduction system including a data reproduction unit for reproducing data stored in the data storage unit based on the shared reproduction list.

  In the above invention, at least one of the terminals includes a list creation method transmission unit that transmits a preset creation method of the shared playlist to the other terminal, and the other terminal includes the list creation method transmission unit. A list creation method receiving unit that receives the creation method of the shared playlist transmitted from the shared playlist creation unit based on the shared playlist creation method received by the list creation method reception unit It is preferable to create a shared playlist.

  The present invention also provides a data storage unit for storing reproducible data, a list transmission unit for transmitting a list of data stored in the data storage unit to the outside, and a list for receiving a list transmitted from the outside A receiving unit, a list received by the list receiving unit and a list of data stored in the data storage unit, and a shared playlist creating unit that creates a list of overlapping data as a shared playlist; There is provided a data reproduction system including a data reproduction unit for reproducing data stored in the data storage unit based on the shared reproduction list.

  Further, in the above invention, a shared list creation method receiving unit that receives the creation method of the shared playlist transmitted from the outside is provided, and the shared playlist received by the list creation method receiving unit is received by the shared playlist creation unit It is preferable to create the shared playlist based on the creation method.

  According to the present invention, it is possible to perform data communication processing between terminals in a short time while enabling reproduction of data shared by a plurality of terminals.

  Hereinafter, a data reproduction system and a terminal according to an embodiment of the present invention will be described.

  The present embodiment includes a plurality of terminals, and each terminal stores a data storage unit that stores reproducible data, and a list transmission unit that transmits a list of data stored in the data storage unit to other terminals. A list receiving unit that receives a list transmitted from another terminal and a list received by the list receiving unit and a list of data stored in the data storage unit are compared to share a list of overlapping data A data reproduction system including a shared reproduction list creation unit created as a reproduction list and a data reproduction unit that reproduces data stored in the data storage unit based on the shared reproduction list is adopted.

According to this embodiment, in any one of the plurality of terminals, the list of data stored in the data storage unit is transmitted to another terminal by the list transmission unit. Also in other terminals that have received the transmitted list by the list receiving unit, the list of data stored in the data storage unit is transmitted to the other terminals by the list transmitting unit. Then, in all terminals, all lists received by the list receiving unit and the list of data stored in the data storage unit are compared by the shared reproduction list creating unit, and a list of overlapping data is shared by all the lists. Created as a playlist. Data stored in the data storage unit is reproduced by the data reproduction unit based on the shared reproduction list.
In this way, each terminal can create and play a shared playlist by performing data communication with other terminals twice, and can perform data communication processing between the terminals in a short time. And the possibility that a communication error will occur can be reduced.

  In the above embodiment, at least one terminal includes a list creation method transmission unit that transmits a preset shared playlist creation method to another terminal, and the other terminal is transmitted from the list creation method transmission unit. A list creation method receiving unit for receiving a method for creating a shared playlist may be provided, and the shared playlist creation unit may create a shared playlist based on the method for creating a shared playlist received by the list creation method receiving unit. Good.

  In this way, in at least one terminal, a preset shared reproduction list creation method (for example, in alphabetical order of data names) is transmitted to another terminal by the list creation method transmission unit. Then, in another terminal, the shared playlist is created by the shared playlist creation unit based on the creation method received by the list creation method receiver. Thereby, all the terminals can create a shared playlist based on the creation method set for at least one terminal without previously setting the creation method of the shared playlist for each terminal.

  The present embodiment includes a data storage unit that stores reproducible data, a list transmission unit that transmits a list of data stored in the data storage unit to the outside, and a list reception that receives a list transmitted from the outside A shared playlist creation unit that compares the list received by the list receiving unit with the list of data stored in the data storage unit and creates a list of overlapping data as a shared playlist, and shared playback A data reproduction terminal including a data reproduction unit that reproduces data stored in the data storage unit based on the list is employed.

According to the present embodiment, a list of data stored in the data storage unit is transmitted to the outside by the list transmission unit, and the list received by the list reception unit from the outside and stored in the data storage unit by the shared reproduction list creation unit The list of data being compared is compared. Then, a list of overlapping data is created as a shared reproduction list. Then, the data reproduction unit reproduces the data stored in the data storage unit based on the shared reproduction list.
In this way, a shared playlist can be created by performing data communication with the outside twice, and the data communication processing with the outside can be performed in a short time and a communication error may occur. Can be reduced.

  The above embodiment includes a list creation method receiving unit that receives a method for creating a shared playlist transmitted from the outside, and the shared playlist creation unit is based on the shared playlist creation method received by the list creation method receiving unit. It is also possible to create a shared playlist.

  In this way, for example, a shared playlist creation method such as alphabetical order of data names is received by the list creation method receiver, and a shared playlist is created by the shared playlist creator based on the received creation method Is done. This makes it possible to create a shared playlist based on a creation method received from outside without setting a creation method of the shared playlist in advance.

Hereinafter, a data reproduction system and a terminal according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a configuration example of a data reproduction system 1 according to an embodiment of the present invention. As shown in this figure, the data reproduction system 1 includes a plurality of data reproduction terminals, specifically, a mobile phone 3, a portable music player 4, and a laptop personal computer (hereinafter referred to as “PC”) 5. Yes. These data reproduction terminals can communicate bidirectionally with other data reproduction terminals by a wireless method such as infrared communication.

  Each of the above-described data reproduction terminals includes the following common components. That is, as shown in FIG. 2, each data reproduction terminal includes a control unit 11, a data storage unit 12, a list creation unit 13, a list transmission unit 14, a list creation method transmission unit 15, and a list reception unit 16. And a shared reproduction list creation unit 17, a data reproduction unit 18, and a list creation method reception unit 19. These units are connected to each other via a bus 21 so that information can be exchanged between them.

The data storage unit 12 stores reproducible music data such as MP3 in association with identification information such as the name of the data.
The list creation unit 13 reads the data identification information stored in the data storage unit 12 and creates a list of data stored in the data storage unit 12.
The list transmission unit 14 transmits the list created by the list creation unit 13 to another data reproduction terminal.

The list receiving unit 16 receives a list transmitted from another data reproduction terminal.
The shared playback list creation unit 17 compares the list received from another data playback terminal with the list created by the list creation unit 13 and creates a list of overlapping data as a shared playback list.
The data reproduction unit 18 reads and reproduces the data stored in the data storage unit 12 based on the shared reproduction list created by the shared reproduction list creation unit 17.

The list creation method transmission unit 15 transmits a preset shared reproduction list creation method to another data reproduction terminal. Here, specific examples of the method for creating the shared reproduction list include, for example, alphabetical order of data names and new order of data storage date / time.
The list creation method receiving unit 19 receives the shared playback list creation method transmitted from the list creation method transmission unit 15.
Here, when different shared playlist creation methods are received from a plurality of data playback terminals, it may be determined which shared playlist creation method is received earliest. Then, the shared playlist creation unit 17 can create a shared playlist based on the method of creating the shared playlist received earliest.
This determination can be made by using a determination unit (not shown). At this time, each data reproduction terminal may notify the data reproduction terminal that has transmitted the method of creating the shared reproduction list that has not been adopted, that the data reproduction terminal has not been adopted.
Note that the list creation method transmitting unit 15 is not necessarily provided in all the data reproduction terminals, and may be provided in at least one data reproduction terminal.
The control unit 11 controls the above-described units in an integrated manner.

The operation of the data reproduction system 1 having the above configuration will be described below with reference to the flowchart shown in FIG.
Here, as shown in FIG. 3, the music A, B, C, D, E is stored in the data storage unit 12 of the mobile phone 3, and the music B, C, D is stored in the data storage unit 12 of the portable music player 4. D and E will be described on the assumption that music data A, B, C, and E are stored in the data storage unit 12 of the personal computer 5, respectively. In addition, an instruction to create a shared reproduction list will be described as being performed from the mobile phone 3.

First, when a user operates an operation button or the like of the mobile phone 3, the mobile phone 3 creates a list of data stored in the data storage unit 12 of the mobile phone 3 (S1). That is, in the example shown in FIG. 3, the mobile phone 3 creates a list composed of A, B, C, D, and E.
Next, the cellular phone 3 transmits the created list to the portable music player 4 and the personal computer 5 (S2). At this time, the mobile phone 3 transmits the list and transmits a method for creating a shared playback list preset in the mobile phone 3 to the portable music player 4 and the personal computer 5.

The portable music player 4 and the personal computer 5 receive the list from the mobile phone 3 to create a list of data stored in each data storage unit 12 (S3). That is, in the example shown in FIG. 3, a list composed of B, C, D, E is created in the portable music player 4 and A, B, C, E is created in the personal computer 5.
Next, the portable music player 4 transmits the created list to the mobile phone 3 and the personal computer 5 (S4). Similarly, the personal computer 5 transmits the created list to the mobile phone 3 and the portable music player 4.

  Next, each data playback terminal compares the list received from the other data playback terminal with the list created by itself based on the method of creating the shared playback list transmitted from the mobile phone 3, and duplicate data Is created as a shared reproduction list (S5). For example, the mobile phone 3 includes a list composed of B, C, D, E transmitted from the portable music player 4 and a list composed of A, B, C, E transmitted from the personal computer 5. Then, the list composed of A, B, C, D, E created by itself is compared. Then, a list composed of B, C, and E shared with each list is created as a shared reproduction list. The same processing is also performed in the portable music player 4 and the personal computer 5 to create a shared playlist.

  Then, each data reproduction terminal reproduces data stored in each data storage unit 12 based on the created shared reproduction list (S6).

  As described above, according to the data reproduction system 1 according to the present embodiment, each data reproduction terminal performs data communication with other data reproduction terminals twice to create and reproduce a shared reproduction list. In addition, the data communication process between the data reproduction terminals can be performed in a short time, and the possibility of communication errors occurring can be reduced.

  Also, according to the data reproduction system 1 according to the present embodiment, at least one data reproduction terminal includes the list creation method transmission unit 15, and another data reproduction terminal includes the list creation method reception unit 19. Thus, it is possible to create a shared playlist for each data playback terminal based on a creation method set only for at least one data playback terminal without previously setting a method for creating a shared playlist for each data playback terminal. it can.

As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the specific structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.
For example, in the present embodiment, the mobile phone 3, the portable music player 4, and the personal computer 5 have been described as examples of data playback terminals that constitute the data playback system 1. Instead of this, it is needless to say that PDA (Personal Digital Assistants) or the like may be used, and it may be composed of two or four or more data reproduction terminals.

In addition, although the instruction to create the shared reproduction list has been described as being performed from the mobile phone 3, it may be performed from the portable music player 4 or the personal computer 5.
In the present embodiment, music data is used as reproducible data. However, instead of this, audio data, image data, moving image data, or the like may be used.

Further, in each data reproduction terminal, it has been described that a list of data stored in the data storage unit 12 is created by the list creation unit 13, but a list may be stored in the data storage unit 12 in advance. Good.
Further, the portable music player 4 and the personal computer 5 that have received the list from the mobile phone 3 have been described as transmitting the list created by the respective list creation units 13 to other data reproduction terminals. A list of data that overlaps the received list may be transmitted to another data reproduction terminal. That is, it is possible to transmit the newly created list to another data playback terminal after removing the list of data unnecessary for shared playback from the list created by the list creation unit 13. Thereby, since data to be transmitted can be reduced, data communication processing between terminals can be performed in a short time.

  Further, the components of each data reproduction terminal shown in FIG. 2 may be provided separately from the components generally provided in each data reproduction terminal, or each data reproduction terminal generally includes. It is good also as using together with the component which is. For example, since the mobile phone 3 generally includes a transmission unit, a reception unit, and a storage unit, overlapping components among these components may be used together. The same applies to other data reproduction terminals.

  In addition, at least one data reproduction terminal according to the present embodiment may include a reproducible time transmitting unit, and each data reproduction terminal may include a reproducible time receiving unit. In S2, the reproducible time transmission unit transmits information for synchronizing the timing of data reproduction at each data reproduction terminal to each data reproduction terminal. Specifically, the reproducible time transmission unit transmits the reproducible time information to another data reproduction terminal so that the shared reproduction is started after a predetermined time or a predetermined period has elapsed. Thereby, in S6, each data reproduction terminal can perform simultaneous reproduction of each data reproduction terminal at the reproducible time based on the created shared reproduction list.

Each data reproduction terminal according to the present embodiment may include a reproducible time receiving unit, and may further include a determination unit.
After S3, the determination unit determines whether or not reproduction is possible at the reproducible time based on the reproducible time information received from another data reproduction terminal.
In S4, each data reproduction terminal may transmit a signal (alert) notifying that reproduction is not possible to another data reproduction terminal when reproduction is impossible at the designated reproduction possible time. . In addition, when the other data reproduction terminal receives the alert, the data reproduction terminal stops displaying the data reproduction, or displays a display notifying that any data reproduction terminal cannot reproduce at the same time. May be displayed on the screen.

Each data reproduction terminal according to the present embodiment may include a reproducible time transmission unit, a reproducible time reception unit, and a reproduction time determination unit. In S4, the reproducible time transmission unit transmits reproducible time information at which data can be shared and reproduced to another data reproduction terminal. Each reproduction time determination unit compares the information of the reproducible time transmitted from the other data reproduction terminal with the information of the reproducible time transmitted by itself, and calculates the latest time among them. Then, each playback time determination unit determines that the latest time is the time (playback time) at which shared playback is started.
In S6, each data reproduction terminal reproduces data stored in each data storage unit 12 at the reproduction time determined by each reproduction time determination unit based on the created shared reproduction list. Thus, each terminal can perform data communication with other terminals twice, thereby creating a shared playlist and performing playback simultaneously, and performing data communication processing between the terminals in a short time. The possibility of communication errors occurring can be reduced.

1 is a configuration diagram of a data reproduction system according to an embodiment of the present invention. It is the functional block diagram which expanded and showed the function with which each data reproduction terminal of FIG. 1 is provided. It is a figure which shows an example of the list | wrist of the data memorize | stored in each data reproduction terminal. It is a flowchart which shows the process performed by each data reproduction terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Data reproduction system 3 Cellular phone 4 Portable music player 5 Personal computer 11 Control part 12 Data storage part 13 List creation part 14 List transmission part 15 List creation method transmission part 16 List reception part 17 Shared reproduction list creation part 18 Data reproduction part 19 List creation method receiver

Claims (4)

With multiple devices,
Each said terminal
A data storage unit for storing reproducible data;
A list transmission unit that transmits a list of data stored in the data storage unit to the other terminal;
A list receiving unit for receiving a list transmitted from another terminal;
A shared playlist creating unit that compares the list received by the list receiving unit with the list of data stored in the data storage unit and creates a list of overlapping data as a shared playlist;
A data reproduction system comprising: a data reproduction unit that reproduces data stored in the data storage unit based on the shared reproduction list. At least one of the terminals includes a list creation method transmission unit that transmits a preset creation method of the shared playlist to the other terminals,
The other terminal includes a list creation method reception unit that receives the creation method of the shared playlist transmitted from the list creation method transmission unit,
The data reproduction system according to claim 1, wherein the shared playlist creation unit creates the shared playlist based on the shared playlist creation method received by the list creation method reception unit. A data storage unit for storing reproducible data;
A list transmission unit for transmitting a list of data stored in the data storage unit to the outside;
A list receiver for receiving a list transmitted from the outside;
A shared playlist creating unit that compares the list received by the list receiving unit with the list of data stored in the data storage unit and creates a list of overlapping data as a shared playlist;
A data reproduction terminal comprising: a data reproduction unit that reproduces data stored in the data storage unit based on the shared reproduction list. A list creation method receiving unit for receiving a creation method of the shared playlist transmitted from the outside;
4. The data playback terminal according to claim 3, wherein the shared playlist creation unit creates the shared playlist based on the shared playlist creation method received by the list creation method reception unit.

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