KR20100094195A - Method and apparatus for reproducing media data by limiting control operation - Google Patents

Abstract

PURPOSE: A method for more commercially using consumption of media data is provided to restrict control operation of media data reproduction through API(Application Programming Interface) in a client, thereby reproducing media data of a media server based on the limited control operation. CONSTITUTION: A client receives a web page from a media server(130). The client drives the received web page. The client receives predetermined media data to the media server(132). The client receives information about restriction about control operation in a media data reproduction from a media server(134). Based on the received information, the client restricts the control operation of the media data reproduction(136~142).

Description

Method and apparatus for reproducing media data by limiting control operation}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a method and apparatus for reproducing media data, and more particularly, to a method and apparatus for reproducing media data by restricting control operations of media data playback.

As the exchange of media data through wired and wireless communication networks becomes more frequent, methods for commercially utilizing the consumption of media data itself are being developed. For example, the media data consumption of a user is commercially used by forcibly viewing an advertisement associated with free media data, while providing free media data to the user.

In this case, if the user does not watch the advertisement using the skip function or the fast forward function, the original purpose of commercially utilizing the consumption of the media data cannot be achieved. Further, even when the user records free media data and shares the recorded media data indiscriminately with other users, the original purpose of commercial consumption of the media data can not be achieved.

Therefore, the provider of media data wants to limit the control operations that can be performed to prevent the user from performing control operations such as recording, skipping and fast forward while playing the media data.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a method and apparatus for reproducing media data by restricting a user's control operation, and to provide a computer-readable recording medium having recorded thereon a program for executing the method.

According to another aspect of the present invention, there is provided a method of reproducing media data received from a media server, the method comprising: receiving an application programming interface (API) Driving a browser; Limiting control operations of the media data playback using the application programming interface; And playing the media data based on the limited control operation.

According to a more preferred embodiment according to the invention, the step of limiting the control operation of the media data playback comprises the steps of: receiving information related to the limit of the control operation; And invoking an application programming interface that limits the control operation of the media data playback based on the received information.

According to a more preferred embodiment according to the invention, the step of receiving information relating to the limitation of the control operation is related to the limitation of the control operation as metadata before the start of a session for the playback of the media data. Receiving information or a notification according to CEA-2014 relating to the restriction of the control operation during a session for the media data playback.

According to a more preferred embodiment of the present invention, the step of receiving the information related to the restriction of the control operation is performed during the session for playing the media data according to Asynchronous JavaScript and XML (AJAX). Receiving information related to the restriction of.

According to a more preferred embodiment according to the present invention, the step of receiving information related to the limitation of the control operation includes receiving information relating to the restriction of the control operation from a third server other than the media server.

According to a more preferred embodiment of the present invention, in the step of driving the application for reproducing the media data based on the limited control operation, upon receipt of an input instructing a control operation from the user, the input control operation is restricted Determining whether control operation; And if the input control operation is a limited control operation as a result of the determination, ignoring the input control operation and continuing to drive the application.

According to an aspect of the present invention, there is provided an apparatus for reproducing media data received from a media server according to an embodiment of the present invention includes an application programming interface (API) Browser drive unit for driving a browser provided; And an application driver for limiting the control operation of the media data reproduction using the application programming interface, and for driving an application that reproduces the media data based on the limited control operation.

In order to solve the above technical problem, an embodiment of the present invention provides a computer-readable recording medium having recorded thereon a program for executing the above-described media data reproducing method.

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

1 is a flowchart illustrating a method of playing media data according to an embodiment of the present invention.

Referring to FIG. 1, a client 110 is a device that consumes media data and receives media from the media server 120 and plays the media. The media data may be AV (Audio / Video) media data. Client 110 may be a device having a browser according to CEA-2014. CEA-2014 is a standard for web-based protocols and frameworks for remote user interfaces over UPnP networks and the Internet, providing a remote user interface to UPnP devices based on the web, whereby UPnP devices perform remote control Make it possible.

The client 110 drives a browser and drives an application for playing media data based on the driven browser. The browser provides a driving environment of an application for reproducing media data, and includes at least one application programming interface (API) related to reproducing the media data. The API related to media data playback also includes an API for restricting the control operation of media data playback. The application may be a web page associated with media data playback. The web page includes a link or script or the like related to the playback of the media data.

In operation 130, the client 110 requests the media server 120 for an application related to playing media data, that is, a web page, and receives the web page in response to the request. Receive a web page including a link or script for playing media data.

In operation 132, the client 110 drives the web page received in operation 130 to request the media server 120 for predetermined media data, and receives the media data in response to the request. Receive media data by streaming or download.

In step 134, the client 110 receives the media from the media server 120 about the restriction of the control operation that the user can perform in playing the data. In step 132, the session for media data playback is started according to the media data request of the client 110, and the information on the restriction of the control operation is separately obtained from the media server 120 in step 134 after the start of the session for media data playback. Can be received.

However, the information on the limitation of the control operation does not necessarily need to be received separately from the media server 120 after the session for playing the media data is started, and may be received as metadata along with the media data when the session is started in step 132. It can also be.

Information on the limitation of the control operation may be received in the form of a notification according to CEA-2014 of the media server 120 after the start of the session for media data playback, or in accordance with Asynchronous JavaScript and XML (AJAX). You may.

The client 110, which runs an application supporting AJAX, may receive only necessary information from the media server 120 without reloading the entire page, that is, information related to the limitation of the control operation. Therefore, after the start of the session for media data playback, only the information related to the restriction of the control operation can be requested to the media server 120 according to AJAX, and the information related to the restriction of the requested control operation can be received.

The information related to the limitation of the control operation may be information related to the pause or the stop of the media data playback or the information related to the limitation of the recording of the media data playback. In playing the media data, when the user must watch the advertisement, information for limiting the stopping or stopping of the advertisement may be information related to the restriction of the control operation. Further, the information for limiting the recording of the media data for copyright protection of the media data being played back may be information related to the limitation of the control operation.

In step 136 the client 110 limits the control operation of the media data playback based on the information received in step 134. Based on the information received in step 134, an API is called that limits the control operation of media data playback. The called API specifies only control operations that can be performed during media data playback or only control operations that cannot be performed during playback. This will be described in detail with reference to FIGS. 2A and 2B.

2A and 2B illustrate APIs for limiting control operations of media data playback according to one embodiment of the invention.

Referring to FIG. 2A, an API according to an embodiment of the present invention includes an object method and an object property for limiting control operations of media data playback.

'SetMode', a method for limiting control operations, receives mode as shown in FIG. 2A as a variable from an application running on the client 110, that is, a web page, and sets control operations that can be performed. For example, if '0x01' is input to the API as a variable, only media data start and stop can be performed. If '0x02' is input as a variable, media data can be stopped and resumed. If the start, stop, stop and restart is possible, '00000011' is inputted as '0x03', that is, a combination of '0x01' and '0x02'. '0x08' is a parameter for restricting the recording of media data. If '0x11', that is, '00001011' is input as a binary number, start, stop, stop, restart, and write can be performed.

The upper four bits can be used to control another control operation. To limit the control operation to the 'default mode' set by default in the browser, '0xff', that is, '11111111' in binary is entered.

Object properties are also provided to indicate the current state limited by the 'SetMode' method. For example, 'Playmode' is an object property to indicate the current limited state of the control operation, and 'recordMode' is an object property to indicate whether the recording of the current media data is restricted.

Also, with respect to the steps 140 and 142 described later, 'error' is provided as an object characteristic for notifying the user that an error has occurred when the user inputs an unacceptable control operation.

Referring to FIG. 2B, the API according to another embodiment of the present invention includes an object method and an object property for limiting the control operation of the media data playback similarly to FIG. 2A.

Compared to FIG. 2A, modes in which a method 'SetMode', which limits a control operation, is input as a variable do not correspond to a specific control operation, but correspond to a reproduction mode combining a plurality of control operations.

In other words, if '0x00' is entered as a variable in the 'Setmode' method, it is set to 'AdvancedPlayer Mode' and all control operations are possible.If '0x01' is entered as a variable, it is set to 'PrimitivePlayer Mode' to start media playback. And stills only. When set to 'PrimitivePlayer Mode', the function of regulating the reproduction speed of media reproduction, the search function, and the function of moving to previous / next media data are limited. Finally, if '0x02' is entered as a variable, it is set to 'BasicPlayer Mode', so that only the function of adjusting the playback speed may be limited.

Referring again to FIG. 1, in step 138, the client 110 reproduces the media data based on the limited control operation in step 136. Play media data using only limited control operations.

There may be user input while playing the media data. In this case, in step 140, the client 110 determines whether the control operation input by the user is a limited control operation in step 136.

In step 142, if the control operation input by the user in step 140 is a limited control operation, the client 110 ignores the input of the user and continues the media data reproduction. However, if the control operation inputted by the user is not limited dynamic at step 140, control is performed according to the control operation inputted by the user.

3 is a flowchart illustrating a media data playback method according to another embodiment of the present invention.

Compared to the media data reproduction method shown in FIG. 1, only step 334 is different. In FIG. 1, the information on the limitation of the control operation is received from the media server 320 providing the media. In FIG. 3, the information is received from the third server 350, not the media server 320. The third server 350 may be a separate digital right management (DRM) management server operated by a provider of media data as a separate server for supervising media playback of the client 310. The remaining steps shown in FIG. 3, that is, steps 330, 332, 336, 338, 340, and 342 correspond to steps 130, 132, 136, 138, 140, and 142, respectively.

FIG. 4 illustrates a client 110 or 310 in accordance with an embodiment of the present invention.

Referring to FIG. 4, the client 110 or 310 according to an embodiment of the present invention includes a media data player 410 and an information receiver 420, and the media data player 410 includes a browser driver 412. ) And an application driver 414.

The media data player 410 requests and receives media data from the media server 120 or 320 and plays the media data.

The browser driver 412 drives a browser that provides a driving environment of an application for playing media data. The browser provides at least one API related to media data playback. The browser may be a browser according to CEA-2014 as described above. The API related to media data playback also includes an API for restricting the control operation of media data playback. The application may be a web page associated with media data playback.

The application driver 414 drives an application related to the playback of media data based on the browser driven by the browser driver 412. The media server 120 or 320 requests, receives, and drives an application related to playing media data, that is, a web page.

In addition, the application driven by the application driver 414 also calls an API that restricts the control operation of the media data playback provided in the browser. The API is called based on the information related to the restriction of the control operation received by the information receiver 420 to limit the control operation of the media data playback. Stopping or stopping the playback of the media data, or limiting the recording of the media data. Details relating to the limitation of the control operation have been described above with reference to FIGS. 2A and 2B.

When the limitation of the control operation is set, the media data is reproduced based on the limited control operation. According to CEA-2014, all control operations of media data playback are defined by the API of the browser. Thus, one embodiment according to the present invention adds an API to the browser for limiting the control operation in the form of a built-in object or a plug-in object, and limits the control operation based on the added API.

The control operation related to the playback of the media data can be restricted outside the client 110 using the added API, so that the user cannot arbitrarily skip or fast forward commercial-purpose content such as an advertisement. Can be used more actively and commercially.

The information receiver 420 receives the information related to the control operation restriction of the media data reproduction to the media server 120 or the third server 350. As described above, the information on the limitation of the control operation may be received in the form of a notification from the media server 120 or the third server 320 after the start of the session for media data playback. It may be received from the media server 120 or the third server 350 in accordance with AJAX (Asynchronous JavaScript and XML). In addition, information relating to the restriction of the control operation may be transmitted to the client 110 as metadata before the start of the session for media data playback, as described above.

The information receiver 420 may receive information on the limitation of the control operation manually from the media server 120 or the third server 350. However, the information receiver 420 may explicitly request the media server 120 or the third server 320 for information on the restriction of the control operation, and may receive the information in response to the request.

5 shows a media server 120 according to an embodiment of the present invention.

FIG. 5 illustrates the configuration of the media server 120 when the media server 120 transmits information related to the control operation restriction of media data playback to the client 110, as shown in FIG.

Referring to FIG. 5, the media server 120 according to an embodiment of the present invention includes an application providing unit 510, a media providing unit 520, and an information providing unit 530.

The application providing unit 510 provides a web page related to the playback of media data to the media playback unit 410 of the client 110. Receives a web page from the client 110 and receives a web page including a link or script related to playback of the media data in response to the request.

The media provider 520 provides the media data requested by the client 110 to the media player 410 of the client 110.

The information provider 530 transmits information related to the control operation restriction of the media data playback to the client 110. After the start of the session for media data playback, send information relating to the limitation of the control operation to the client 110 in the form of a notification, or transmit information relating to the limitation of the control operation according to Asynchronous JavaScript and XML (AJAX). do. As described above, the information related to the limitation of the control operation may be transmitted to the client 110 as metadata before the start of the session for media data playback as described above.

FIG. 6 illustrates an IPTV (Internet Protocol Television) service system according to an embodiment of the present invention. FIG. 6 shows a system configuration of a residential network according to the functional architecture of open IPTV.

Referring to FIG. 6, a residential network 600 of an IPTV system according to an embodiment of the present invention includes an Open IPTV Terminal Functional (OITF) device 610, an IMS Gateway (IG) device 612, and an Application Gateway (AG). Device 614, a Content and Service Protection (CSP) Gateway device 616, and a WAN gateway device 618. 6 illustrates an example in which the devices 610 to 618 of the residential network 600 exist as separate devices. However, the aforementioned devices 610 to 618 may be modules included in one device.

The IPTV service is provided from the IPTV service provider server 620 to the residential network 600, and the IG device 612, the AG device 614, the CG device 616, and the WAN gateway device 618 receive the IPTV service. Relay to OITF device 610.

The IPTV service provider server 620 is a device corresponding to the media server 120 of FIG. 5, and provides the OITF device 610 with information related to media data, an application related to the playback of the media data, and a restriction on the media data playback. to be.

The OITF device 610 is a device that finally consumes IPTV services of a plurality of IPTV service providers. The OITF device 610 selects one of a plurality of IPTV service providers according to a user input, and consumes IPTV services provided by the selected IPTV service provider. Device. The device that finally receives and consumes the service, such as a TV, may be an OITF device 610.

The OITF device 610 is a device corresponding to the clients 110 and 310 in Fig. In other words, it is a device that receives and reproduces media data related to the IPTV service from the IPTV service provider server 620, and is a device for reproducing media data based on a browser having an API related to restoration of media data, Run the application related to playback.

The IG device 612 is a device that allows an IPTV service access interworking with the IMS (IP Multimedia Subsystem) of the OITF device 610. The IPTV service provided from the IPTV service provider server 620 is received and relayed to the OITF device 610. IG device 612 interacts with OITF device 610 using a predetermined protocol defined for interaction between devices within residential network 600. In response to a request for providing an IPTV service by the OITF device 610, an IPTV service provider server 620 is requested for an IPTV service, and an IPTV service is received and relayed to the OITF device 610.

The AG device 614 receives the application and relays it to the OITF device 610. When a predetermined application is required to use the IPTV service, the application is received from the IPTV service provider server 620 and is provided to the OITF device 610. OITF device 610 is an optional device that is only needed if an application needs to be provided.

The CG device 616 is an optional device required when converting IPTV content and service protection of an external network into a protection device (eg, DTCP-IP) that the OITF device 610 can understand.

WAN gateway device 618 is an essential device that supports a physical connection between residential network 600 and IPTV service provider server 620.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited to the above-described embodiments, which can be modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications will fall within the scope of the invention.

For example, an apparatus for reproducing media data and an apparatus for providing media data according to an exemplary embodiment of the present invention includes a bus coupled to each unit of the apparatus as shown in Figs. 4 and 5, It may include at least one processor coupled to the bus. It may also include a memory coupled to the bus for storing instructions, received messages or generated messages and coupled to at least one processor for performing instructions as described above.

In addition, the system according to the present invention can be embodied as computer readable codes on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and also include a carrier wave (for example, transmission through the Internet). The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

1 is a flowchart illustrating a method of playing media data according to an embodiment of the present invention.

2A and 2B illustrate APIs for limiting control operations of media data playback according to one embodiment of the invention.

3 is a flowchart illustrating a media data playback method according to another embodiment of the present invention.

4 illustrates a client in accordance with an embodiment of the present invention.

5 shows a media server 120 according to an embodiment of the present invention.

6 illustrates an IPTV service system according to an embodiment of the present invention.

Claims (16)

A method for a client to play media data received from a media server, the method comprising: Driving a browser having an application programming interface (API) for restricting a control operation of the media data reproduction; Limiting control operations of the media data playback using the application programming interface; And Playing the media data based on the limited control operation. 2. The method of claim 1, wherein the step of limiting the control operation of the media data playback is Receiving information related to the limitation of the control operation; And Invoking an application programming interface that limits the control operation of the media data playback based on the received information. 3. The method of claim 2, wherein receiving information related to the limitation of the control operation is Restriction of the control operation during the reception of information related to the limitation of the control operation as the metadata or before the session for the media data playback, before starting the session for the playback of the media data. Receiving a notification according to the relevant CEA-2014. 3. The method of claim 2, wherein receiving information related to the limitation of the control operation is Receiving information related to the restriction of the control operation during a session for the media data playback according to AJAX (Asynchronous JavaScript and XML). 3. The method of claim 2, wherein receiving information related to the limitation of the control operation is Receiving information related to the restriction of the control operation from a third server other than the media server. 3. The method of claim 2, wherein invoking an application programming interface that limits the control operation is Invoking an application programming interface to limit stop of playback of the media data. 3. The method of claim 2, wherein invoking an application programming interface that limits the control operation is And calling an application programming interface that limits a record of the media data. The method of claim 1, wherein the step of running an application that plays the media data based on the limited control operation Determining whether the input control operation is a limited control operation when receiving an input indicating a control operation from a user; And And if the input control operation is a limited control operation as a result of the determination, ignoring the input control operation and continuing to play the media. A device of a client for playing media data received from a media server, the device comprising: A browser driver for driving a browser having an application programming interface (API) for restricting the control operation of the media data reproduction; And And an application driver for limiting the control operation of the media data reproduction using the application programming interface and driving an application for reproducing the media data based on the limited control operation. The method of claim 9, And an information receiver configured to receive information related to the restriction of the control operation. The application driving unit And calling an application programming interface that limits the control operation of the media data playback based on the received information. The method of claim 10, wherein the application driving unit While receiving information related to the restriction of the control operation as the metadata before starting the session for playing the media data, or during a session for playing the media data, the control operation is performed. Receiving a notification according to CEA-2014 related to the restriction, the media data playback device. The method of claim 10, wherein the application driving unit And receiving information related to the limitation of the control operation during the session for the media data playback according to AJAX (Asynchronous JavaScript and XML). The method of claim 10, wherein the application driving unit And receiving information related to the restriction of the control operation from a third server other than the media server. The method of claim 10, wherein the application driving unit And calls an application programming interface for restricting the stop of the media data reproduction. The method of claim 10, wherein the application driving unit Calling an application programming interface for limiting recording of the media data. A computer-readable recording medium having recorded thereon a program for executing the method of any one of claims 1 to 8.

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