KR20070087903A - Method and apparatus for providing dvd content with rendering device in upnp network - Google Patents

Abstract

A method and an apparatus for providing DVD(Digital Video Disk) contents in an UPnP(Universal Plug and Play) network are provided to enable a media server to transmit stream data, where selection information received from a control point is reflected, to a corresponding media renderer, so that a user can use a DVD menu like using a local DVD system. A method for providing DVD(Digital Video Disk) contents in an UPnP(Universal Plug and Play) network comprises the following steps of: generating menu information of the DVD contents and providing the menu information to a control point(310,330); receiving selected information on the menu information from the control point(340); and reflecting the selection information and transmitting the DVD contents to a media renderer which the control point appoints(350).

Description

Method and apparatus for providing DVD content with rendering device in UPnP network

1 is a view for explaining a method of using content in general in the UPnP network,

FIG. 2 is a view showing content information defined in a CDS (Content Directory Service) of a conventional media server. FIG.

3 is a flowchart illustrating a process in which a media server provides DVD content to a media renderer according to an embodiment of the present invention;

4A to 4B are views for explaining a method of defining DVD content in a CDS according to an embodiment of the present invention;

5 is a view for explaining a method for defining DVD content in a CDS according to another embodiment of the present invention;

6 is a flowchart illustrating a method for providing a DVD content to a media renderer by a media server according to the present invention in a UPnP network;

7 is a structural diagram of a media server according to an embodiment of the present invention.

The present invention relates to a home network, and more particularly, to a method of using DVD content in a UPnP network.

UPnP (Universal Plug and Play) technology enables communication between devices connected to the network without complicated setup procedures. It enables other devices to automatically find the services of one device. By simply connecting the device to the network, existing devices connected to the network automatically discover the newly added device, and users can easily use the services provided by any device connected to the network.

1 is a diagram for describing a method of using content generally in a UPnP network.

The control point, which is a device that provides a user interface, inquires of the content information from the media server, which provides the content. The media server provides a Content Directory Service (CDS), which defines actions that allow the control point to retrieve and manage content on the media server. For example, Browse () is an example. The control point can call Browse () to get information about the contents provided by the media server in XML format.

The control point that has obtained the information on the contents calls the Play () action defined in the AVTS (AVTransport Service) of the media renderer and requests to play one of the contents that the media server can provide. At this time, the URI of the content is transmitted. The media renderer requests the media server to transmit the content through the HTTP-GET request based on the URI, and the media server receiving the HTTP-GET request displays the media. The media renderer plays the content by streaming it to the renderer. The media renderer provides a rendering control service (RCS), in which actions such as volume, contrast, and brightness are controlled to control the state of the media renderer.

Here, the XML document received by the control point by calling Browse () and received in response thereto includes a title, resource URI, protocol information, and the like, and is illustrated in FIG. 2.

On the other hand, if the UPnP technology is applied to the DVD system, the media server can transmit the DVD contents to the media renderer through the network. In the conventional UPnP CDS, a DVD system provided by the DVD system can display the content information. Menu information (audio, language, subtitles, etc.) cannot be displayed.

That is, as shown in FIG. 2, since the CDS of the conventional media server provides the URI of the DVD content, the media renderer has no choice but to request the content transmission of the corresponding URI. Therefore, when the user plays the contents of the DVD system through the network, There is a problem that can not use a variety of additional functions provided, such as audio selection, subtitle selection, language selection.

An object of the present invention is to provide an apparatus and method for transmitting menu information of DVD content to a control point in a UPnP network and transmitting DVD content to a media renderer according to a menu setting selected by a user.

In order to achieve the above object, the present invention provides a method for providing DVD content by a media server in a UPnP network, comprising: (a) generating menu information of the DVD content and providing the same to a control point; (b) receiving selection information on the menu information from the control point; And (c) transmitting the DVD content to a media renderer designated by the control point by reflecting the selection information.

Here, step (a) includes the menu information in the response message to the CDS :: browse () call message of the control point or transmits the information to the control point or to the CDS :: browse () call message of the control point. It is preferable to include the URL of the menu information in the response message to the control point.

In addition, the menu information includes information regarding at least one of language, audio, and subtitles.

The present invention also provides a computer-readable recording medium having recorded thereon a program for executing the DVD content providing method on a computer.

In addition, the present invention provides a media server device for providing DVD content in a UPnP network, comprising: a menu information providing unit for generating menu information of the DVD content and providing the same to a control point; A selection information receiver which receives selection information on the menu information from the control point; And a content transmission unit reflecting the selection information and transmitting the DVD content to a media renderer designated by the control point.

Here, the menu information providing unit includes the menu information in a response message to the CDS :: browse () call message of the control point or transmits the menu information to the control point or to the CDS :: browse () call message of the control point. The URL of the menu information is included in the response message to the control point.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a flowchart illustrating a process in which a media server provides DVD content to a media renderer according to an embodiment of the present invention.

The media server generates menu information on the DVD content that it can provide (310). The menu information here may include audio, subtitles, languages, and the like. That is, the menu information provides options for what the user can make about audio, subtitles, language, and the like.

Then, when the control point calls Browse () of the CDS (320), the menu information generated in step 310 is transmitted to the control point in response (330). Since the format of the response message for Browse () is already defined, in order to deliver menu information, a new tag may be added to insert menu information or a URL having menu information in an existing <res> tag may be added. .

When the control point receiving the menu information calls SetDVDMenu () to transmit the selection information for the menu information, the media server reflects the selection information to generate stream data of the DVD content (350), and the media designated by the control point. When the Play () call is received from the renderer (360), the stream data generated in step 350 is transmitted to the media renderer. Here, SetDVDMenu () is an action newly defined by the CDS according to the present invention. When the control point calls SetDVDMenu () and transmits menu selection information, the received media server reflects the menu selection information. Generate stream data.

4A to 4B illustrate a method of defining DVD content in a CDS according to an embodiment of the present invention.

FIG. 4A illustrates a response message for a Browse () call. It can be seen that a URI for menu information of DVD content is included in a <res> tag. The control point receiving the XML document of the format shown in FIG. 4A obtains menu information on the DVD content from the URI, and delivers selections for the menu to the media server through SetDVDMenu (). 4B shows an example of a format of menu information that can be obtained when the control point accesses the URI in FIG. 4A. In the embodiment of FIG. 4B, there are three sub-items of menu information: subtitle, language, and audio. The user can select one of Korean or English as the language, and the language is English and the audio is fixed as DTS. Can be.

The control point that has acquired the menu information selects one from among the options that can be selected by referring to the menu information, and transmits the selection information to the media server by including the selection information in the SetDVDMenu () call message. After receiving the selection information, the media server reflects the selection information to generate stream data for the DVD content, and when the control point requests a specific media renderer to play the DVD content, the media server receives the selection information received from the control point. By transmitting the stream data reflected to the media renderer, the user can enjoy the DVD title by reflecting the menu selected by the user.

5 is a diagram for describing a method of defining DVD content in a CDS according to another embodiment of the present invention.

In FIG. 4A, the URL of the menu information is inserted in the <res> tag in the response message of Browse (). However, in this embodiment, a new tag is defined to directly deliver the menu information. That is, referring to FIG. 5, the <res> tag is not different from the prior art, but it can be seen that menu information regarding three subtitles, a language, and audio is inserted into the newly added <sec> tag.

The control point calls Browse () of the media server and receives a message of the format shown in FIG. 5 in response to the media server. When the control point is received and parsed, the control point can directly obtain menu information. As in Figs. 4A to 4B, the control point obtaining the menu information selects one of the options if there are options that can be selected by referring to the menu information and includes the selection information in the SetDVDMenu () call message. Send to media server. After receiving the selection information, the media server generates the stream data for the DVD content by reflecting the selection information, and when the control point requests the specific media renderer to play the DVD content, the media server receives the selection information received from the control point. By transmitting the reflected stream data to the media renderer, the user can use the DVD menu as if using the local DVD system.

6 is a flowchart illustrating a method for providing a DVD content to a media renderer by a media server according to the present invention in a UPnP network.

The media server providing the DVD content generates menu information about the DVD content (601), and when the control point calls the Browse () action defined in the CDS (602), it transmits the menu information in response (603). ). As described above, the message for transmitting the menu information may have a format as shown in FIG. 4A or 5.

When the control point receiving the menu information transmits the selection information generated by referring to the menu information to the media server (604), the media server generates stream data for the DVD content by reflecting the received selection information (605). The control point sends the selection information to the media server and calls SetDVDMenu (), an action newly defined by the present invention to request stream data, as described above. After that, if the control point asks the specified media renderer to play the DVD content that has already set the menu's options via SetDVDMenu () (606), the media renderer requests the media server to transfer the DVD content. In operation 607, the media server transmits the generated stream data to the media renderer.

7 is a structural diagram of a media server according to an embodiment of the present invention.

As shown in FIG. 7, the media server 700 according to an embodiment of the present invention includes an I / O interface 710, a menu information providing unit 720, a selection information receiving unit 730, and a content providing unit 740. It includes.

The I / O interface 710 is a physical means for the media server 700 to communicate with the control point 750 and the media renderer 760, the menu information providing unit 720 is a DVD (not shown) Extract the necessary data from the menu to generate the menu information, and transmits the generated menu information to the control point 750 via a response message for Browse (). The selection information receiving unit 730 receives the SetDVDMenu () call of the control point and notifies the content providing unit 740 of this, and the content providing unit 740 refers to the selection information included in the SetDVDMenu () call message and stream data. After generating the transmission to the media renderer 760.

The content provider 740 includes a stream generator 741, a request receiver 742, and a stream transmitter 743. The stream generator 741 is a SetDVDMenu () call message by the selection information receiver 730. If is received, after receiving the selection information, and reflects this to generate stream data for the DVD content. The request receiving unit 742 receives a Play () call message from the media renderer 760 and notifies the stream transmission unit 743 of the Play () call message. The stream transmission unit 743 mediates the stream data generated by the stream generation unit 741. Send to renderer 760.

Meanwhile, the above-described embodiments of the present invention can be written as a program that can be executed in a computer, and can be implemented in a general-purpose digital computer that operates the program using a computer-readable recording medium.

The computer-readable recording medium may be a magnetic storage medium (for example, a ROM, a floppy disk, a hard disk, etc.), an optical reading medium (for example, a CD-ROM, a DVD, etc.) and a carrier wave (for example, the Internet). Storage medium).

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

According to the present invention, when a user views a remote DVD content through a home network, the user can use various menus provided by the DVD in the same manner as using the local DVD content.

Claims (11)

In a method for providing media content by a media server in a UPnP network, (a) generating menu information of the DVD content and providing the same to a control point; (b) receiving selection information on the menu information from the control point; And (c) transmitting the DVD content to a media renderer designated by the control point by reflecting the selection information. The method of claim 1, The step (a) is characterized in that for transmitting to the control point including the menu information in the response message to the CDS :: browse () call message of the control point. The method of claim 1, The step (a) is characterized in that the response message for the CDS :: browse () call message of the control point including the URL of the menu information and transmits to the control point. The method of claim 1, Step (c) is, (c1) generating stream data for the DVD content by reflecting the selection information; (c2) receiving a request for transmission of the DVD content from the media renderer; And (c3) transmitting the stream data to the media renderer. The method of claim 1, Wherein the menu information includes information regarding at least one of language, audio, and subtitles. A computer-readable recording medium having recorded thereon a program for executing the method according to any one of claims 1 to 5 on a computer. In a media server device that provides DVD content in a UPnP network, A menu information providing unit for generating menu information of the DVD content and providing the same to a control point; A selection information receiver which receives selection information on the menu information from the control point; And And a content transmitter for reflecting the selection information and transmitting the DVD content to a media renderer designated by the control point. The method of claim 7, wherein The menu information providing unit includes the menu information in a response message to the CDS :: browse () call message of the control point and transmits to the control point. The method of claim 7, wherein The menu information providing unit includes a URL of the menu information in a response message to the CDS :: browse () call message of the control point and transmits it to the control point. The method of claim 7, wherein The content transmission unit, A stream generator for generating stream data for the DVD content by reflecting the selection information; A request receiving unit receiving a request for transmitting the DVD content from the media renderer; And And a stream transmitter for transmitting the stream data to the media renderer. The method of claim 7, wherein And the menu information includes information about at least one of language, audio, and subtitles.

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