TWI385966B - Multimedia system and media central controller and method for managing media file thereof - Google Patents

Description

Multimedia system, media central controller and its management media files law

The present invention relates to a multimedia system, and more particularly to a multimedia system capable of having a corresponding privacy while sharing files, and a method of managing the media files.

In recent years, most personal computers, handheld devices, and smart home appliances have wired or wireless Internet access capabilities. As these devices are often concentrated in the home, the home network is booming. In order to simplify the connection between various device connection networks and realize the communication between devices, Universal Plug and Play (UPnP) realizes the automation of device search and network settings, greatly improving the device usage. Convenience.

On the other hand, due to the rapid spread of handheld devices, a variety of content is produced in large quantities. Among them, multimedia files account for the most important part. In order to enable users to easily play or share multimedia files, the UPnP Forum defines a UPnP-based standard that defines a UPnP AV (Audio/Video) architecture for the transmission of multimedia files. Three components are defined under the UPnP AV architecture, namely Control Point, Media Server and Media Renderer.

1 is a schematic diagram of a conventional UPnP AV architecture. Referring to Figure 1, control point 110 plays an active role in browsing and accessing files shared by media server 120 in the network. And, depending on the supported file The file format and transport protocol, the media server 120 will transfer the file to a particular media player 130 for playback.

The device under the UPnP AV architecture can not only achieve automatic setting, searching, and sharing files in the media server 120, but the control point 110 can also be required according to the multimedia video format and transmission protocol supported by the media player 130. Provide a service for playback. Users can not only avoid the troubles of device settings, but also play all the files on the network as they please.

The media server 120 and the media player 130 can only passively accept the requirements of the control point 110 and return the final execution result. When the media server 120 receives the action request of the browse file transmitted by the control point 110, the media server 120 immediately returns all the file information shared by itself to the control point according to its directory hierarchy. 110. Therefore, all control points 110 under the UPnP architecture can freely access the content shared by the media server 120. However, there is no security control mechanism in this way. It can be said that there is no privacy at all, let alone different services for different control points.

On the other hand, since the media server returns the information to the control point according to the directory hierarchy of the shared file, the traditional file presentation method can cause considerable obstacles to the users of the home network. This is because, for users of the home network, it does not care that each file is located in that media server, and its intention is to find itself in the many files scattered among the various media servers. The required file.

In view of this, the present invention provides a multimedia system and a method for managing the same, in which a media central controller is used to centrally manage media files stored in a media server.

In addition, the present invention further provides a media central controller and a method for managing the media file, wherein a control module is disposed in the media central controller to interact with the media server, and a media servo module is provided to receive the control point. Service requirements.

In particular, the present invention provides a multimedia system that includes a media server, a control point, and a media center controller. The media server is used to store multiple media files. Each media file has corresponding file information. The control point is used to determine whether the media file is played, and the control point has an identification information. The media central controller is configured to receive the identification information from the control point and receive the file information from the media server to select from the file information, and establish a correspondence between the identification information and the selected file information.

In an embodiment of the invention, the multimedia system further includes a media player. The media player receives the playback request transmitted by the control point through the media central controller to play the media file. In detail, when the control point selects one of the file information corresponding to the identification information through the media central controller, the media player will play the media file corresponding to the selected file information.

From another point of view, the present invention proposes a method of managing media files. First, a multimedia system is provided that includes a control point, a media server, and a media center controller. After the control point is activated, the control point registers with the media central controller and transmits its identification information. Then, the media The central controller receives the identification information from the control point. Also, the media central controller searches the multimedia system to find the media server. After that, the media server transmits the file information corresponding to the file media to the media central controller. The media central controller then selects from these file information. Finally, the media central controller establishes a correspondence between the identification information and the selected file information.

In addition, the present invention further provides a media central controller adapted to manage control points and media servers in a multimedia system. The media central controller includes a media servo module, a control module, and a user interface. The media servo module is used to receive identification information from the control point. The control module is configured to receive file information from the media server, and the file information respectively corresponds to multiple media files in the media server. The user interface is used to select from the file information to establish a correspondence between the identification information and the selected file information.

In an embodiment of the present invention, the user interface further includes establishing a plurality of tags according to the type of each file information, so as to link each file information with the corresponding tag. In addition, the user interface can record the file information corresponding to the identification information to a list to transmit the list to the control point. In addition, the media servo module further includes a registration service for the control point to register.

From another point of view, the present invention proposes a method of managing media files. The method is applicable to a media central controller to utilize a media central controller to manage control points and media servers. The control point, the media server and the media central controller are located in the multimedia system. First, self-control The point receives the identification information. This identification information is provided by the control point when registering with the media central controller. And, receiving multiple file information from the media server. These file information respectively correspond to multiple media files in the media server. Next, choose from these file information. Finally, a correspondence between the identification information and the selected file information is established.

In an embodiment of the present invention, after the step of establishing a correspondence between the identification information and the selected file information, the file information corresponding to the identification information may be recorded to a list, and the list is transmitted to the control point. For the control point to choose.

In an embodiment of the invention, the selection from the file information is based on a user's selection. In addition, after receiving the file information of the media file, multiple tags are provided to classify the file information. Further, the tags are created according to the types of the file information to link the file information with the corresponding tags.

In an embodiment of the invention, the method of managing a media file further includes providing a registration service for the control point to register. Also, before receiving the file information, the multimedia system is searched to find the media server.

In summary, the present invention uses the media central controller to set the correspondence between the media files in the media server and the various control points. For control points that have been incorporated into the media central controller for management, the control point can only discover the presence of the media central controller. Accordingly, each control point accesses the media file according to the shared content set by the media central controller, so that the file sharing is secure.

The above described features and advantages of the present invention will be more apparent from the following description.

Traditionally shared files under the UPnP AV architecture cannot be configured with different permissions for different controllers. In order to improve the file sharing without security under the UPnP AV architecture, the present invention provides a multimedia system and a method for managing the media file, so that the media server can still maintain the corresponding privacy while sharing the file, so as to improve the file sharing. Security. That is to say, different sharing lists are given according to different levels of users (control points), thereby achieving differentiated services.

In order to clarify the content of the present invention, the following specific examples are given as examples in which the present invention can be implemented.

First embodiment

2 is a schematic diagram of a multimedia system according to a first embodiment of the present invention. The multimedia system 200 includes a control point 210, a media server 220, a media player 230, and a Media Central Controller (MCC) 240.

The control point 210 has a set of identification information, such as its name or serial number. The control point 210 can determine whether to play the media file shared by the media server 220.

The media server 220 is configured to store a plurality of media files, and each media file has corresponding file information. Here, the file information is, for example, which media server the media file is stored in, and the bit in the directory hierarchy. Set, file name and auxiliary file name.

The MCC 240 is configured to receive its identification information from the control point 210, and receive the file information from the media server 220 to select among the file information, and establish a correspondence between the identification information and the selected file information. That is, the MCC 240 is used to set the media file accessible by the control point 210.

The media player 230 receives the play request transmitted by the control point 210 through the MCC 240 to play the media file. In detail, after the control point 210 selects one of the corresponding file information through the MCC 240, the MCC 240 notifies the media server 220 corresponding to the selected file information, so that the media server 220 will select the selected file. The media file corresponding to the information is transmitted to the media player 230 for playback.

In addition, in the present embodiment, the control point 210 can support the services provided by the MCC 240. For example, control point 210 will automatically register with MCC 240 after startup.

For example, in the case of the UPnP AV architecture, all devices in the multimedia system 200 (including the control point 210, the media server 220, the media player 230, and the MCC 240) are first connected to the network and booted. The MCC 240 can then discover the presence of the control point 210, the media server 220, and the media player 230. Accordingly, the MCC 240 can receive the identification information of the control point 210 and all the file information of the media server 220 to further set the access rights of the control point 210.

In addition, in the embodiment, a control module can be set in the MCC 240 to interact with the media server 220, and a media server is set. The service module is configured to receive the service request of the control point 210. The function of each component of the MCC 240 will be described in detail below with reference to an embodiment.

3 is a block diagram of a media center controller in accordance with a first embodiment of the present invention. Referring to FIG. 2 and FIG. 3 simultaneously, the MCC 240 includes a media servo module 241, a control module 243, and a user interface 245.

The media servo module 241 is configured to receive the identification information from the control point 210. That is, the media servo module 241 provides a registration service for the control point 210 to register. For example, when the control point 210 issues a registration request to the media servo module 241, the control point 210 transmits its own identification information to the media servo module 241.

The control module 243 is configured to search all media servers in the multimedia system 200 to receive file information from the media server 220.

The user interface 245 is configured to select from the file information to establish a correspondence between the identification information and the selected file information. In addition, the user interface 245 can record the file information corresponding to the identification information to a list to transmit the list to the control point 210. In addition, the user interface 245 can establish multiple tags according to the type of each file information, so as to link each file information with the corresponding tag.

Since the control module 243 is provided in the MCC 240, when the MCC 240 is activated, all media servers in the network (multimedia system 200) can be discovered through the UPnP AV protocol. On the other hand, in order for the MCC 240 to know all the control points to be managed, all control points in the multimedia system 200 are capable of supporting the capabilities of the registration service provided by the MCC 240. Accordingly, when the control point 210 is activated, it will immediately go to the MCC 240. The media servo module 241 is registered to provide its own related information (ie, identification information) for the MCC 240 to have sufficient information for subsequent operations.

The steps of the method for managing media files using the MCC 240 are described in detail below in conjunction with the multimedia system 200 described above.

4 is a flow chart of a method for managing a media file according to a first embodiment of the present invention. Referring to FIG. 2, FIG. 3 and FIG. 4, first, in step S405, the MCC 240 provides a registration service by the media servo module 241 for registration by the control point 210, and is controlled by the media servo module 241. Control point 210 receives the identification information.

Moreover, in step S410, the multimedia module 200 is searched by the control module 243, and the media server 220 is found to receive a plurality of file information from the media server 220. For example, the control module 243 can search all media servers in the multimedia system 200 through the UPnP AV protocol. Thus, when the media server 220 is booted up and connected to the network, the MCC 240 can discover its presence.

Next, in step S415, the MCC 240 receives the user's selection through the user interface 245 to select among the file information. In other words, the user sets whether the control point 210 can access the media file shared by the media server 220 through the user interface 245.

Finally, in step S420, the correspondence between the identification information and the selected file information is established by the user interface 245. Moreover, after the correspondence between the identification information and the selected file information is established, the file information corresponding to the identification information may be recorded to a list, and the list is transmitted to the control point for the control point to select.

For example, assume that the file information transmitted by the media server 220 to the MCC 240 is "A", "B", "C". The MCC 240 receives the user's selection through the user interface 245 to select "A" and "B". Thereafter, the user interface 245 links the "A" and "B" to the identification data of the control point 210, respectively. Moreover, the file information corresponding to the identification information can be recorded to a list by the user interface 245 to transmit the list to the control point 210 through the media servo module 241 for the control point 210 to select. Accordingly, "A" and "B" can be browsed in the control point 210, and "C" cannot be browsed.

It is worth mentioning that a large number of media files are generated and distributed in various media servers, such as smart handheld devices, Global Positioning System (GPS) navigation mobile phones, digital cameras or individuals. The computer also proposes a file management mechanism that allows users to access their desired files more quickly and intuitively.

For example, after the control module 243 receives the file information of the media file, a plurality of tags can be provided through the user interface 245 to classify the file information. Further, the user can create a label according to the type of each file information, so as to link each file information with the corresponding label. For example, if the media file is a music file, you can create tags such as "Allegro" and "Lento" depending on the rhythm of the music, or create "Pop", "Blue", "Jazz", "Rock" depending on the type of music. And so on. After that, each file information is linked with the tag to enable the user to access the desired file more quickly and intuitively.

Additionally, in other embodiments, the number of control points and media servers is not limited. The following is a description of an embodiment.

Second embodiment

FIG. 5 is a schematic diagram of a multimedia system according to a second embodiment of the present invention. The multimedia system 500 includes control points 505 and 510, media servers 515, 520 and 525, a media player 530, and an MCC 540. The control points 505 and 510 of the present embodiment have the same or similar functions as the control point 210 of the first embodiment, and the media servers 515, 520 and 525 have the same or similar functions as the media server 220 of the first embodiment, The media player 530 and the MCC 540 have the same or similar functions as the media player 230 and the MCC 240 of the first embodiment, respectively, and therefore will not be described in detail herein.

As with the first embodiment, here, control points 505 and 510 each have a set of identification information and are capable of supporting the services provided by MCC 540. For example, control points 505 and 510 will automatically register with MCC 540 after startup. A plurality of media files are stored in the media servers 215, 220, and 225, respectively. The identification information is received from the control points 505 and 510 through the MCC 540, and the file information is received from the media servers 515, 520 and 525 to select among the file information, and between the identification information and the selected file information. Establish a correspondence.

The following is a description of the steps of the method for managing media files in conjunction with the multimedia system 500 described above. FIG. 6 is a flow chart of a method for managing a media file according to a second embodiment of the present invention. Referring to FIG. 5 and FIG. 6 simultaneously, first, in step S605, after the control points 205 and 210 are activated, the control points 205 and 210 respectively register with the media servo module 541 of the MCC 540, and transmit their identification information to MCC 540.

Next, in step S610, the MCC 540 transmits the media servo module. 541 receives identification information from control points 205 and 210. Moreover, in step S615, the MCC 540 searches through the control module 543 for all media servers present in the multimedia system 500, that is, the media servers 515, 520, and 525.

After the control module 543 finds the media servers 515, 520, and 525, as shown in step S620, the media servers 515, 520, and 525 respectively transmit the file information corresponding to the archive media to the MCC 540. For example, in the case of the media server 520, the media server 520 transmits the file information corresponding to all the media files shared by the media server 520 to the MCC 540 according to its directory hierarchy. The rest is like this.

Then, in step S625, the MCC 540 selects from the file information. For example, the MCC 540 selects these file information through the user interface 545 according to the user's selection.

Finally, in step S630, the MCC 540 establishes a correspondence between the identification information and the selected file information through the user interface 545. Accordingly, through the setting of the MCC 540, the control point 505 and the control point 510 can browse the corresponding file information according to their access rights. That is to say, the user interface 545 provided by the MCC 540 can easily set a list of media files that can be accessed by different control points.

In the following, an embodiment will be further described to further describe a method for setting access rights of each control point by using a user interface.

Third embodiment

The following embodiment is exemplified in Fig. 5. Here, media servers A, B, and C represent media servers 515, 520, and 525, respectively, and control points. A and B represent control points 505 and 510, respectively.

When the MCC 540 finds three media servers A, B, and C in the network (multimedia system 500), and currently has two control points A and B supporting the MCC 540, the MCC 540 will pass through the user interface 545. Set the control point access rights. In this embodiment, it is assumed that the media servers A, B, and C each share two media files, respectively, media server A shares "msa1.mp3" and "msa2.mp3", and media server B shares "msb1." Mp3" shares "msc1.mp3" and "msc2.mp3" with "msb2.mp3" and media server C.

7A and 7B are schematic diagrams showing a user interface according to a third embodiment of the present invention. Please refer to FIG. 5, FIG. 7A and FIG. 7B simultaneously. FIG. 7A shows the setting of the control point A, and FIG. 7B shows the setting of the control point B. The user can set "msa1.mp3" through the user interface 543 to be accessible only to the control point A (as shown in FIG. 7A), and set "msc2.mp3" to be only available to the control point B. Take (as shown in Figure 7B).

After the above settings are completed, the different control points A and B are different in the media files that can be accessed, so that the security and differentiated services of file sharing can be easily achieved.

For example, FIG. 8A and FIG. 8B are schematic diagrams of a list presented at a control point according to a third embodiment of the present invention. Please refer to FIG. 5, FIG. 8A and FIG. 8B simultaneously, wherein FIG. 8A is a list presented by control point A, and FIG. 8B is a list presented by control point B.

Since the MCC 540 has been started to manage the media files in the multimedia system 500 at this time, for the control points A and B that have been incorporated into the MCC 540 management. In the multimedia system 500, only one media server module 541 of the MCC 540 exists. In other words, the control points A, B will not see the media files shared by the media servers A, B, C, but will see the media files after the MCC 540 resets, as shown in Figures 8A and 8B.

That is to say, the files listed in the media file list of each control point indicate that the file can be accessed by them. In the case of FIG. 8A, the control point A can access "msa1.mp3", "msa2.mp3", "msb1.mp3", "msb2.mp3", and "msc1.mp3". Since "msc2.mp3" does not have a correspondence with the control point A, the control point A cannot access "msc2.mp3". In addition, the same file information can also be attributed to a list of media files of more than one control point, such as "msa2.mp3", "msb1.mp3", "msb2.mp3", and "msc1.mp3".

As can be seen from the results of FIGS. 8A and 8B, the MCC 540 can manage the media files in the multimedia system 500 through the above-described settings, thereby achieving security and differentiated services for file sharing. However, from a user perspective, if the list presented in the control point is more intuitive, the user will be able to use it more easily. Accordingly, the MCC 540 also provides a tag-based media file management mechanism that allows users to access their desired files more quickly and intuitively.

An example will be given below. 9A-9D are schematic diagrams of editing a label according to a third embodiment of the present invention. Please refer to FIG. 5 and FIG. 9A to FIG. 9D simultaneously, and the setting of FIG. 7 described above is continued. First, the user can edit (add or delete) the label of the media file through the user interface 545 provided by the MCC 540.

For example, the user adds a label "Allegro" (as shown in FIGS. 9A and 9B) and removes the label "Blue" (as shown in FIGS. 9C and 9D). After the label is reset, the corresponding relationship between the media file and the label in the media servers A, B, and C can be set again through the user interface 545 provided by the MCC 540.

Next, the file information of the media file is linked with the label, as shown in FIGS. 10A and 10B. 10A and FIG. 10B are schematic diagrams showing establishing a tag link according to a third embodiment of the present invention. Here, there are two sets of labels, namely "Allegro" and "Lento". After the settings of FIGS. 10A and 10B, "msa1.mp3" and "msb2.mp3" are linked with the tag "Allegro", and "msb1.mp3" and "msc2.mp3" are linked with the tag "Lento".

Due to the above settings, the results presented by the control point A and the control point B are as shown in FIGS. 11A to 11F. 11A-11F are schematic diagrams showing an intuitive list presented at a control point according to a third embodiment of the present invention. 11A to 11C are intuition lists of control points A, and FIGS. 11D to 11F are intuition lists of control points B. Accordingly, the user using the control points A, B can select the file to be played more quickly.

At the same time, the MCC 540 can store the records of the user access files so that the presentation of the tags can be sorted according to the user's preference for the media files. For example, when access to "msa1.mp3", "msb2.mp3" (label "Allegro") and "msc1.mp3" (label "Others") at control point A, the label will be rendered as shown in Figure 12. Show. FIG. 12 is a schematic diagram of a label arrangement according to a third embodiment of the present invention. Here, since the tag "Allegro" is accessed the most, it is ranked first, followed by The label "Others", while the untouched label "Lento" is arranged last.

Accordingly, after the tag is used for classification, the user can more intuitively access the file in a more intuitive manner according to the characteristics of the file itself and by the customized tag. Compared with the presentation manners of FIG. 8A and FIG. 8B, the requirements of the user are more satisfied.

In summary, in the above embodiment, the MCC is used to manage media files stored in all media servers, and further set media files accessible by each control point. In this way, not only can the file sharing be secured and differentiated services can be achieved without changing the UPnP AV architecture. In addition, MCC uses tags to classify media files. Users can not only manage tags dynamically according to their needs, but also browse and access any media files in the multimedia system in a more intuitive way. .

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

100, 200, 500‧‧‧ multimedia systems

110, 210, 505, 510‧‧‧ control points

120, 220, 515, 520, 525 ‧ ‧ media server

130, 230, 530‧‧‧Media Player

240, 540‧‧‧Media Central Controller

241, 541‧‧‧Media Servo Module

243, 543‧‧‧ control module

245, 545‧‧‧ user interface

S405~S420‧‧‧ steps of the method for managing media files according to the first embodiment of the present invention

S605~S630‧‧‧ steps of the method for managing media files according to the second embodiment of the present invention

1 is a schematic diagram of a conventional UPnP AV architecture.

2 is a schematic diagram of a multimedia system according to a first embodiment of the present invention.

3 is a media center control according to a first embodiment of the present invention. Block diagram of the device.

4 is a flow chart of a method for managing a media file according to a first embodiment of the present invention.

FIG. 5 is a schematic diagram of a multimedia system according to a second embodiment of the present invention.

FIG. 6 is a flow chart of a method for managing a media file according to a second embodiment of the present invention.

7A and 7B are schematic diagrams showing a user interface according to a third embodiment of the present invention.

8A and FIG. 8B are schematic diagrams of a list presented at a control point according to a third embodiment of the present invention.

9A-9D are schematic diagrams of editing a label according to a third embodiment of the present invention.

10A-10B are schematic diagrams showing establishing a tag link according to a third embodiment of the present invention.

11A-11F are schematic diagrams showing an intuitive list presented at a control point according to a third embodiment of the present invention.

FIG. 12 is a schematic diagram of a label arrangement according to a third embodiment of the present invention.

S405~S420‧‧‧ steps of the method for managing media files according to the first embodiment of the present invention

Claims (20)

A method for managing a media file is applied to a media central controller to manage a control point and a media server by using the media central controller, wherein the control point, the media server, and the media central controller are located in a multimedia In the system, the method includes: receiving an identification information from the control point, the identification information is provided by the control point when registering with the media central controller; receiving a plurality of file information from the media server, wherein the The file information respectively corresponds to a plurality of media files in the media server; at least one of the file information is selected; and a correspondence between the identification information and the selected file information is established. The method for managing a media file according to claim 1, wherein before the step of selecting at least one of the file information, the method further comprises: receiving a user's selection according to the user's selection. Select at least one of the file information. The method for managing a media file according to claim 1, wherein after the step of receiving the file information from the media server, the method further comprises: providing a plurality of tags to classify the file information. The method for managing media files as described in claim 3, wherein the step of classifying the file information comprises: establishing the tags according to respective types of the file information; Link each of these file information to the corresponding tag. The method for managing media files as described in claim 1 of the patent scope further includes: providing a registration service for the control point to register. The method for managing a media file according to claim 1, wherein after the step of establishing a correspondence between the identification information and the selected file information, the method further comprises: recording the file information corresponding to the identification information to a A list to transfer the list to the control point. The method for managing media files according to claim 1, wherein before receiving the file information, the method further comprises: searching the multimedia system to find the media server. A media central controller is adapted to manage a control point and a media server in a multimedia system, the media central controller comprising: a media servo module, receiving an identification information from the control point; a control module, Receiving, by the media server, a plurality of file information, wherein the file information respectively corresponds to a plurality of media files in the media server; and a user interface, selecting at least one of the file information to The identification information is associated with the selected file information. The media central controller of claim 8, wherein the user interface further comprises: establishing a plurality of tags according to respective types of the file information to establish a link between each of the file information and the corresponding tag. The media central controller of claim 8, wherein the user interface further comprises recording the file information corresponding to the identification information to a list to transmit the list to the control point. The media central controller of claim 8, wherein the media servo module further comprises providing a registration service for the control point to register. A method for managing a media file, comprising: providing a multimedia system including a control point, a media server, and a media central controller; the control point registers with the media central controller and transmits an identification information thereof; The media central controller receives the identification information from the control point; the media central controller searches the multimedia system to find the media server; the media server transmits a plurality of file information to the media central controller, wherein the files The information respectively corresponds to a plurality of media files in the media server; the media central controller selects at least one of the file information; and the media central controller establishes between the identification information and the selected file information Correspondence relationship. The method for managing a media file according to claim 12, wherein before the step of the media central controller selecting at least one of the file information, the method further comprises: In the media central controller, a user's selection is received to select at least one of the file information according to the user's selection. The method for managing a media file according to claim 12, wherein after the step of transmitting, by the media server, the file information to the media central controller, the method further comprises: providing a plurality of media central controllers Labels to classify the archive information. The method for managing media files as described in claim 14, wherein the step of classifying the file information comprises: establishing the tags according to respective types of the file information; and Establish a link with the corresponding tag. The method for managing a media file according to claim 14, wherein the step of the media central controller establishing a correspondence between the identification information and the selected file information further comprises: recording the corresponding information corresponding to the identification information The file information is sent to a list to transfer the list to the control point. A multimedia system, comprising: a media server, storing a plurality of media files, wherein the media files respectively have a plurality of file information; a control point determining whether at least one of the media files is played, and the control point has An identification information; and a media central controller receiving the identification information from the control point and receiving the file information from the media server to select at least one of the file information, and the identification information is Selected file information Establish a correspondence. The multimedia system of claim 17, further comprising: a media player, receiving, by the media central controller, a play request transmitted by the control point to play one of the media files; wherein When the control point is selected by the media central controller from the file information corresponding to the identification information, the media player will play the media file corresponding to the selected file information. The multimedia system of claim 17, wherein the media central controller further comprises: a media servo module, providing a registration service for the control point to register, and receiving the identification information from the control point. a control module for receiving the file information from the media server; and a user interface for selecting at least one of the file information to establish a correspondence between the identification information and the selected file information The relationship is recorded to a list and the list is transmitted to the control point. The multimedia system of claim 19, wherein the control module further comprises: establishing a plurality of tags according to respective types of the file information to establish a link between each of the file information and the corresponding tag.