KR20060032030A - Remote dvd playback system and method using network - Google Patents

Abstract

The present invention relates to a DVD remote playback system and method using a network, and in particular, by allowing a user to remotely connect to a home network and to drive a DVD player existing on the home network so that the DVD can be viewed regardless of the user's location. There is a purpose. The present invention for this purpose has a remote DVD server 110 having a DVD content optical DVD drive and providing a remotely requested DVD playback service, and accessing the remote DVD server 110 to receive and display a DVD list and to display a user. Is configured to provide a DVD service based on protocols such as UPnP RemoteUI and UPnP AV, including a remote DVD client 120 for requesting the selected DVD to the remote DVD server 110 to display a corresponding DVD image. do.

Description

Remote playback system and method using DVD network {REMOTE DVD PLAYBACK SYSTEM AND METHOD USING NETWORK}

1 is a block diagram of a DVD remote playback system according to an embodiment of the present invention.

Figure 2 is a flow chart showing the operation of the remote DVD server in FIG.

3 is a flowchart illustrating an operation process of a remote DVD client in FIG.

4 is a signal flow diagram for a service of the UPnP RemoteUI method in an embodiment of the present invention.

5 and 6 are signal flow diagrams for the service of the UPnP RemoteUI and the UPnP AV scheme in the embodiment of the present invention;

5 is a signal flowchart showing a push method of UPnP AV.

6 is a signal flowchart showing a pull scheme of UPnP AV.

7 is a signal flow diagram for a service according to an UPnP RemoteUI and any transmission scheme in an embodiment of the invention.

Explanation of symbols on the main parts of the drawings

110: remote DVD server 120: remote DVD client

411,511,611,711: RemoteUI Server 412: RemoteDVD Server

413,424,513,524,613,624,713,724: application logic

421,521,621,721: RemoteUI Control Point (CP)

422,522,622,722: RemoteUI Client

423: RemoteDVD client 512,612,712: R-protocol server

514,614 AV Control Point (CP) 515,615: AV Media Server

525,625: AV Media Renderer 714: Media Transfer Control Module

715: Media Send Module 725: Media Receive Module

The present invention relates to DVD (DVD) playback, and more particularly, to a DVD remote playback system and method using a network.

Currently, DVD (DVD), which has a recording capacity of about 6 to 8 times that of a compact disc (CD), has been developed and released.

Thus, the DVD (hereinafter referred to as "DVD") can record a movie having the same image quality as that of the current television broadcast.

DVD stands for "Digital Versatile Disc" in the general abbreviation for Digital Video Disk, which means that the recording capacity of the disc has been improved. It was decided by name.

In addition to the introduction of DVD players, VOD (Video On Demand) has been provided, allowing users to watch high-definition movies.

However, conventionally, in the case of a local DVD player, there is a limitation that the DVD viewer must directly operate the local DVD player with a remote controller and be in front of a playback device connected to the DVD player.

Therefore, in order to solve the conventional problems, the present invention provides a DVD remote control using a network created so that a user can watch a DVD regardless of the user's location by remotely accessing a home network and driving a DVD player existing on the home network. Its purpose is to provide a playback system and method.

In order to achieve the above object, the present invention provides a remote DVD server having a DVD content optical DVD drive and providing a remotely requested DVD playback service, and accessing the remote DVD server, receiving and displaying a DVD list, and selecting by a user. And a remote DVD client for requesting a DVD from the remote DVD server to display a corresponding DVD image.

The remote DVD server is connected to a remote DVD client and transmits a command from the client to the control and transmits a video or menu bitmap image from the control to the client, and a program logic necessary for DVD playback. And DVD Play Logic, which receives input from the control and sends the necessary movie or menu image to the control, DVD Media, which means a physical medium capable of storing DVD movies such as a hard disk or a DVD optical disk, And a first control unit responsible for the remote function of connecting to and interacting with the remote DVD client.

The first control unit includes a RemoteUI server that supports the UPnP RemoteDVD protocol, a RemoteDVD server that performs RemoteDVD connection, video and menu transfer with a remote DVD client, and application logic for an interface between the RemoteUI server and the RemoteDVD server. It is characterized by.

The first control unit includes a RemoteUI server supporting the UPnP Remoting protocol (R-protocol), an R-protocol connection to a remote DVD client, an R-protocol server for menu transfer, and a DVD movie to a remote DVD client. An AV media server (MS), an AV control point (CP) for providing an address of a corresponding video to an AV media renderer provided in the AV media server or a remote DVD client according to a DVD video transmission method, and the RemoteUI server, R- It is characterized by including the application logic for the interface between the protocol server and the AV control point.

The remote DVD client is connected to a remote DVD server and sends a user input from the control to the server and sends a video or menu bitmap image from the control through a video decoder (in the case of a video) or directly to a display (Network I). / F), a display driver for sending an image to a video output or a local display device, a video decoder for decoding a video stream received from a remote DVD server through a network interface and transmitting the decoded video stream to a display driver; And a second control unit (Control) for adjusting each component while interworking with a remote DVD server and a user input unit receiving a user input by an infrared remote controller.

The second control unit includes a RemoteUI control point for discovering a remote DVD server, a RemoteUI client, a RemoteDVD client for attempting a RemoteDVD connection to a remote DVD server, a video and menu request, and the RemoteUI control point, a RemoteUI client and a RemoteDVD client. It is characterized by including the application logic for the interface between the configuration.

The second control unit has a RemoteUI control point for discovering a remote DVD server, a RemoteUI client, an R-protocol connection attempt to a remote DVD server, an R-protocol client for a menu request, and a DVD movie from a remote DVD server. And an application logic for interfacing between the AV media renderer (MR) for receiving a message and an interface between the RemoteUI control point, an R-protocol client, and an R-protocol client.

In addition, the present invention is to achieve the above object, the remote DVD client discovers the remote DVD server, the remote DVD client that recognizes the user's connection request to the remote DVD server, the remote DVD server DVD Providing a menu and a DVD movie selected from the DVD menu to the remote DVD client, and requesting the connection to the remote DVD server by the remote DVD client upon completion of the user's connection request or playback of the video. It is characterized by.

The discovery step of the remote DVD server is characterized in that the RemoteUI control point provided in the remote DVD client is performed by UPnP.

Access to the remote DVD server, the menu and video providing step from the remote DVD server is characterized by the RemoteDVD protocol.

Access to the remote DVD server, the menu and video providing step from the remote DVD server is characterized by the Remoting protocol (R-protocol).

The providing of the video may include a process in which the remote DVD client informs the AV control point (CP) of the remote DVD server of the location information of the AV media renderer using R-protocol, and the AV media server uses the AV media renderer based on the location information. It is characterized by consisting of a process of transmitting a video (push) method.

The video providing step includes a process of informing the AV control point of the video location information to the AV media renderer, and a process in which the AV media renderer requests the video to the AV media server and transmits the video in a pull manner.

Thus, the present invention enables the user to play a DVD in the same way that a user can connect to a remote DVD server on a home network using a remote DVD client and then watch a movie with a local DVD player by implementing the method and apparatus.

In addition, the present invention enables remote DVD playback to allow DVD viewing anywhere with a low cost remote DVD client regardless of the location of the remote DVD server.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a block diagram of a network system for playing a remote DVD in the present invention, as shown in FIG. 1, which includes a remote DVD server 110 and a remote DVD client 120.

The remote DVD server 110 includes a DVD optical drive and a network device to implement DVD playback logic and provide a DVD playback service to a user viewing a display device connected to the remote DVD client in cooperation with the remote DVD client 120. do.

The remote DVD server 110 has a network interface unit (Network I / F) 111, a DVD play logic (113), a DVD media (114), and a control unit (Control) ( 112).

The network interface unit 111 is connected to the remote DVD client 120 and sends a command from the remote DVD client 120 to the control unit 112, and a video or menu bit from the control unit 112 is transmitted. The map image is sent to the remote DVD client 120.

The DVD play logic 113 is a program logic module required for DVD playback and receives input from the control unit 112 and sends necessary video or menu images to the control unit 112. Here, the operation of the logic module is the same as that of a general DVD player.

The DVD media 114 is a physical medium capable of storing a DVD movie such as a hard disk or a DVD optical disk.

The control unit 112 controls the remote function of connecting and interacting with the remote DVD client 120.

The remote DVD client 120 connects to the remote DVD server 110 by transmitting a user input, a DVD menu display, a DVD video play, and the like, and transmits the DVD playback screen transmitted by the remote DVD server 110. To the user.

The remote DVD client 120 having such a function includes a network interface 121, a display interface 124, a video decoder 123, and a user. It is configured to include an input unit (User Input) 125, and a control unit (Control) (122).

The network interface unit 121 is connected to the remote DVD server 110 and sends a user input from the control unit 122 to the remote DVD server 110 and transmits a video or menu bitmap transmitted from the control unit 122. The image is sent through the video decoder 123 or directly to the display interface 124.

The display interface unit 124 is a part for sending an image to a video output or a local display device.

The video decoder 123 decodes the video stream transmitted from the remote DVD server 110 through the network interface 121 and sends the decoded video stream to the display interface 124.

The user input unit 125 is a part that receives a user input by an infrared remote controller, a keypad, or the like. Examples of user inputs include remote access input, DVD menu navigation (up, down, select, ...) input, DVD playback input (Play, Stop, Subtitle, ...), local input (volume, brightness,. ..) and so on.

The control unit 122 performs a function of adjusting each component while interworking with the remote DVD server 110.

Meanwhile, the remote DVD server 110 and the remote DVD client 120 having the above functions and components perform the same operations as the flowcharts of FIGS. 2 and 3.

First, the operation of the remote DVD server 110 will be described with reference to FIG.

When the remote DVD server 110 is idle, the controller 112 waits for a connection request from the remote DVD client 120.

Then, if there is a connection request from the remote DVD client 120, the control unit 112 enters the service process and the network interface unit 111 to remotely provide the DVD playback service until the user's termination request or DVD playback end. Control the operation of the DVD play logic 113 and the DVD media 114.

That is, the remote DVD server 110 sends a menu screen or video to the remote DVD client 120 and performs an operation of a corresponding function on a user input from the remote DVD client 120. For example, when a specific item is selected in the menu, the operation of the corresponding item is executed and the changed screen is transmitted to the remote DVD client 120.

In addition, the remote DVD client 120 may transmit a command, not just a screen. For example, the video play and the start of the video stream are announced.

If the user input transmitted from the remote DVD client 120 is confirmed to be the end of the service, the remote DVD server 110 terminates the connection with the remote DVD client 120 and returns to the idle state again.

The operation of the remote DVD client 120 will now be described with reference to FIG.

The remote DVD client 120 connects to the remote DVD server 110 by transmitting a control command to the network interface 121 in response to a user's request for remote DVD viewing.

Thereafter, the remote DVD client 120 confirms the service start of the remote DVD server 110 and then displays a menu screen or a video according to a command (menu display, video display, ...) transmitted from the remote DVD server 110. Receive.

Accordingly, the remote DVD client 120 transfers the menu screen or video received through the network interface unit 121 to the display interface unit 124 through the video decoder 123 or directly to the display interface unit 124. Will be displayed.

If the user input is requested to the remote DVD server 110 during the video playback, it is transmitted to the remote DVD server 110 via the network as it is. This means that the remote DVD client 120 does not know what the command contents by the user input are.

Thus, the remote DVD server 110 interprets the user input and takes the corresponding action.

If the user input is confirmed to be the end of the service, the connection to the remote DVD server 110 is terminated and returns to the idle state again.

The present invention performing the above operation can implement a remote DVD playback system by applying the UPnP RemoteUI and UPnP AV technology, the application example is shown in the flow chart of Figs.

UPnP is an industry standard of the home network and guarantees interoperability, so that following the method proposed by the present invention, interworking between third-party products (remote DVD server and client) is possible.

UPnP RemoteUI is a technology for remotely providing a user interface to a peer device on a network, and is used for DVD menu navigation in an embodiment of the present invention.

4 illustrates an implementation example to which the UPnP RemoteUI is applied in the present invention.

In FIG. 4, the remote DVD server 110 implements UI logic by applying RemoteUI technology, and includes a function of sending a video to the remote DVD client 120.

In FIG. 4, the remote DVD client 120 operates to display graphics (eg, a DVD menu) from the remote DVD server 110 to the user and to deliver user input to the remote DVD server 110. Here, the user input may be an example of pressing a remote control button in the screen coordinates <x, y>.

If only RemoteUI is used, a new protocol is required since there is no protocol supporting remote DVD playback. In the present invention, the remote DVD protocol will be called.

The RemoteDVD protocol is composed of the communication contents between the remote DVD server 110 and the client 120 described above, and the operation thereof is as follows.

In the first step S401, the remote DVD client 120 discovers the RemoteUI server 411 in which the RemoteUI Control Point 421 provides the RemoteDVD protocol during the UPnP discovery process.

In the second step S402, when the user selects the RemoteUI server 411, the RemoteUI control point 421 requests the RemoteUI client 422 to connect with the remote DVD server 110.

In the third step S403, when the RemoteUI client 422 transmits a RemoteDVD connection request to the application logic 424, the RemoteDVD client 423 that receives the RemoteDVD connection request from the application logic 424 transmits to the remote DVD server 110. The RemoteDVD server 412 is connected.

At this time, the RemoteDVD server 412 notifies the RemoteUI server 411 through the application logic 413 that the connection with the remote DVD client 120 is made.

Thereafter, the RemoteDVD server 412 remotely provides the UI of the application logic 413 that executes the RemoteDVD protocol to the remote DVD client 120 to deliver a DVD menu or a DVD movie.

In a fourth step S404, the RemoteDVD server 412 delivers the DVD menu and the DVD movie to the RemoteDVD client 423 using the RemoteDVD protocol by the user request or the application logic 413.

In the fifth step S405, when the RemoteUI control point 421 that recognizes the connection termination request input of the user requests the remoteUI client 422 to terminate the connection, the RemoteUI client 422 terminates the connection to the application logic 424. Transfer to the RemoteDVD client (423).

At this time, when the RemoteDVD client 423 transfers the connection termination to the RemoteDVD server 412, the RemoteDVD client 423 is transferred to the RemoteUI server 411 through the application logic 413.

Accordingly, the connection between the remote DVD server 110 and the remote DVD client 120 is terminated in the sixth step S406.

That is, in FIG. 4, when the UPnP RemoteUI protocol is applied, the connection is terminated by the user request or the determination of the application logic 413 or 424 after the RemoteDVD connection of the remote DVD client 120 is made to the remote DVD server 110. Until the DVD menu and the DVD movie to the remote DVD client 120 using the RemoteDVD protocol.

In addition, FIG. 5 illustrates an embodiment in which UPnP RemoteUI and UPnP AV are mixed in the present invention.

In the example of FIG. 5, the DVD menu is provided to apply the UPnP RemoteUI and the video to UPnP AV to use the existing Remoting protocol.

That is, when the method of FIG. 5 is compared with the method of FIG. 4, the method of FIG. 4 requires a new RemoteDVD protocol for video support, while the method of FIG. 5 is somewhat complicated to implement, but the video is uploaded using UPnP AV. Is to support.

Thus, the communication process between the remote DVD server 110 and the client 120 in Figure 5 is as follows.

In the first step S501, the fourth step S504 is the same as the operation of FIG.

However, RemoteDVD server 412 and RemoteDVD client 423 of FIG. 4 are connected to R-protocol between R-protocol server 512 and client 523 that support the Remoting Protocol (hereinafter abbreviated as "R-protocol"). (S503), menu transfer (S504), and connection termination (S508) according to service termination.

Here, the RemoteUI server 511 provided in the remote DVD server 110 supports R-protocol.

The fifth step (S505) is to provide a menu in the fourth step (S504), if the user selects a random video, the application logic 513 recognized by the P-protocol server 512 to the AV control point 514 In addition, the AV control point 514 transmits a corresponding video transmission command to the AV media server 515 and at the same time the AV media renderer provided to the remote DVD client 120 to which the corresponding video stream should be transmitted. Media renderer 525).

At this time, in step S506, the AV media server 515 transmits the corresponding video stream to the AV media renderer 525.

Accordingly, the remote DVD client 120 displays the video transmitted from the AV media server 515 on a display device such as a TV.

Subsequently, in a seventh step S507, the connection termination command is transmitted to the RemoteDVD client 523 by transferring the user connection termination request to the RemoteUI client 522 and to the application logic 524. do.

At this time, when the RemoteDVD client 523 transmits the connection termination to the RemoteDVD server 512, the connection termination request is transmitted to the RemoteUI server 511 and the AV control point 514 through the application logic 513.

Therefore, in the eighth step S508, the connection between the remote DVD server 110 and the remote DVD client 120 is terminated, so that the moving image transmission is also terminated.

That is, in the embodiment of FIG. 5, the UPnP AV control point 514 is required when the remote DVD server 110 needs to transmit a video by providing a DVD menu by applying a UPnP RemoteUI and transmitting a video by applying UPnP AV. And the AV control point 514 controls the AV media server 515 to transmit the video to the AV media renderer 525 included in the remote DVD client 120 in a push manner.

In addition, FIG. 6 implements the same method as the embodiment of FIG. 5, except that the video transmission is performed in a pull method.

That is, in the exemplary embodiment of FIG. 6, the first step S601 to the fourth step S604, the seventh step S607, and the eighth step S608 are the same as those in FIG. 5, except that the fifth step, Only the sixth step is different.

In other words, when a video is to be transmitted while the remote DVD server 110 and the remote DVD client 120 are connected, the AV control point 614 may transmit the location of the video to be transmitted to the AV media renderer 625 (for example, URI), the media renderer 625 streams the video from the media server 615 in a pull manner.

5 and 6, the DVD logic is provided in the remote DVD server 110 so that information exchange is performed locally. Therefore, the UPnP AV control point CP is preferably located in the remote DVD server 110. It is also possible to be provided in the remote DVD client 120.

If the remote DVD client 120 is equipped with an AV control point (CP), if the user wants to play the video, the remote DVD server 110 needs to transmit the video location information. it means.

On the other hand, the embodiment of Figure 7 is the same as the process of FIG.

However, in FIG. 7, a media transfer control module 714, a media send module 715, and a media send module 715 to which an arbitrary transmission scheme is applied, are not transmitted using UPnP AV. A Media Receive Module 725 is used.

That is, in FIG. 7, the application logic 713 provided in the remote DVD server 110 receives the information of the media receive module 725 provided in the remote DVD client 120 using R-protocol to transfer the media transfer control module. In operation 714, the media send module 715 under the control of the media transfer control module 714 transmits the video to the media receive module 725.

Therefore, in the application example of FIG. 7, the media transmission may use any method proposed by the company while using 'R-protocol' compatible with other companies' products.

As described in detail above, the present invention exhibits the following effects.

1. Remote DVD materials are cheaper than current DVD players, so you can enjoy DVDs in every room in your house.

2. Combining a hard DVD with an optical DVD drive on a remote DVD server can serve as a home DVD jukebox for movie enthusiasts. For example, 20 movies are currently stored on a 200GB hard disk, and the size of the hard disk is larger, allowing more movies to be stored in the future.

3. Since only a remote DVD server needs to be managed, parents can block the viewing of adult content in their homes.

4. If the home network standard is implemented by using UPnP, it can be linked with other companies' products.

Claims (11)

A remote DVD server having a DVD content optical DVD drive and providing a remotely requested DVD playback service; And a remote DVD client for accessing the remote DVD server, receiving and displaying a list of DVDs, and requesting a DVD selected by the user from the remote DVD server to display a corresponding DVD image. system. The method of claim 1, wherein the remote DVD server A network interface (Network I / F) that connects to a remote DVD client and sends commands from the client to the control and sends video or menu bitmap images from the control to the client, Program logic for DVD playback, DVD Play Logic that takes input from the control and sends the necessary movie or menu image to the control, DVD media, which means a physical medium capable of storing DVD movies, such as a hard disk or a DVD optical disc, A DVD remote playback system using a network, comprising: a first control unit responsible for a remote function of connecting to and interacting with a remote DVD client. The method of claim 1, wherein the remote DVD client Connects to a remote DVD server and sends user input from the control to the server A network interface (Network I / F) that sends video or menu bitmap images from the control to the video decoder (for video) or directly to the display, A display driver for sending an image to a video output or a local display device, A video decoder for decoding a video stream received through a network interface from a remote DVD server and transmitting the decoded video stream to a display driver; A user input unit for receiving a user input by an infrared remote controller, And a second control unit (Control) for controlling each of the components while interworking with a remote DVD server. The method of claim 1, wherein the remote DVD server RemoteUI server that supports UPnP RemoteDVD protocol, A RemoteDVD server that performs RemoteDVD access, movie and menu transfers with a remote DVD client, Application logic for interfacing between the RemoteUI server and the RemoteDVD server, Remote DVD client RemoteUI control point for discovering remote DVD servers, With the RemoteUI client, RemoteDVD client for attempting RemoteDVD access to a remote DVD server, requesting movies and menus, And a remote control system, including application logic for interfacing between a RemoteUI client and a RemoteDVD client. The method of claim 1, wherein the remote DVD server RemoteUI server supporting UPnP Remoting Protocol (R-protocol), R-protocol connection with remote DVD client, R-protocol server for menu transfer, An AV media server (MS) for delivering DVD movies to remote DVD clients, An AV control point (CP) for providing a video address to an AV media renderer provided in the AV media server or a remote DVD client according to a DVD video transmission method; Application logic for interfacing between the RemoteUI server, an R-protocol server, and an AV control point; Remote DVD client RemoteUI control point for discovering remote DVD servers, With the RemoteUI client, R-protocol connection attempt to remote DVD server, R-protocol client for menu request, An AV media renderer (MR) for receiving DVD movies from a remote DVD server, DVD remote playback system using a network comprising the application logic for the interface between the RemoteUI control point, R-protocol client and R-protocol client. The remote DVD client discovers the remote DVD server, Connecting the remote DVD server to the remote DVD server by recognizing the connection request of the user; The remote DVD server providing the DVD menu and the DVD movie selected from the DVD menu to the remote DVD client; And the remote DVD client requests to terminate the connection to the remote DVD server upon completion of the user connection request or video playback. 7. The method of claim 6, wherein the step of discovering the remote DVD server is DVD remote playback method using a network, characterized in that the RemoteUI control point provided in the remote DVD client is performed by UPnP. 7. The DVD remote playback method using a network according to claim 6, wherein a connection to a remote DVD server, a menu and a video from a remote DVD server are provided by a RemoteDVD protocol. The method according to claim 6, wherein the connection to the remote DVD server and the menu provision from the remote DVD server are performed by a Remoting protocol (R-protocol). A video remote playback method using a network, characterized in that video transmission is performed by UPnP AV. The method of claim 9, wherein the video transmission The process of the remote DVD client informing the AV control point (CP) of the remote DVD server of the location information of the AV media renderer using R-protocol, A method of remotely playing a DVD using a network, characterized in that the AV media server transmits a push method to a AV media renderer based on the location information. The method of claim 9, wherein the video transmission The process by which the AV control point informs the AV media renderer of the video location, And the AV media renderer requests a video to an AV media server and transmits the video in a pull method.

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