KR20070101000A - Method and apparatus for classfying contents with digital contents management on dlna network - Google Patents

Abstract

A method and an apparatus for classifying contents are provided to enhance user convenience by classifying the contents according to a user selection by using a digital contents management in a DLNA network. Contents in a DLNA(Digital Living Network Alliance) network is retrieved for every predetermined periods(501,503). A list of the searched contents is analyzed by using a DCM(Digital Contents Management) function and the result is stored in a database(505,507). The contents are classified into categories and specific state variables are set for the respective categories(509). A specific content request is received from the DLNA network(511). The state variable for the specific category is acknowledged(515). A URI(Uniform Resource Identifier) of the request content is transmitted to a DMS(517). The content is acquired from the DMS(Digital Media Server).

Description

Method and apparatus for classifying content using digital content management function in DLAN network {Method and apparatus for classfying contents with Digital Contents Management on DLNA network}

1 is a configuration diagram of an embodiment of a general DLNA network;

2 is a block diagram showing an embodiment of a content classification method using the DCM function according to the present invention,

3 is a block diagram showing an interlocking relationship between a digital content management (DCM) function and a digital media server (DMS) according to the present invention;

Figure 4 is a module block diagram showing the interaction between the software configuration module of the content classification device according to the present invention;

5 is a flowchart illustrating a content classification method according to the present invention.

The present invention relates to a method and apparatus for classifying content in a DLNA network, and more particularly, to a content classification method and apparatus using a digital content management (DCM) function in a DLNA network.

DLNA is an abbreviation of Digital Living Network Alliance, and establishes a standard that connects digital AV / C devices or personal computers connected to a home network so that data such as music, video, and still images can be mutually compatible. It is a standardization organization of digital information technology products.

1 is a block diagram of an embodiment of a general DLNA network. The DLNA network of FIG. 1 is based on the UPnP (Universal Plug and Play) protocol, and includes wired and wireless devices including devices connected to the DLNA network and communicating in a format based on the UPnP protocol (hereinafter, referred to as UPnP devices). Network 101.

The UPnP device includes a digital media server (DMS) 103, a digital media player (DMP) 105, a digital media controller (DMC) 106, and a digital media renderer (DMS). Digital Media Renderer (DMR) 107.

In particular, the standard for interconnecting home network devices, called the "DLNA Guidelines" for the standardization of DLNA networks, refers to the device sector of DLNA as DMS (Digital Media Server), DMP (Digital Media Player), and DMC (Digital Media Controller). Or it is divided into DMR (Digital Media Renderer) and the connection condition between DMS and DMP, DMC or DMR is defined .

In other words, DLNA guidelines are based on UPnP as a core technology, so that digital information technology products such as home appliances, PCs, and wireless devices having different brands can be connected to each other through wired and wireless home networks to share contents. The design principles of digital information technology products to be supported are summarized and defined.

The DMS serves to provide a function of a media server device (MSD) in the UPnP AV area, that is, a digital media content. The main purpose of the DMS is a control point (CP) which is a UI application (User Interface Application). A media content item is retrieved to enable a DLNA network user to display or distribute the content. The DMS is equipped with a broadcast receiving device and broadcast middleware for receiving digital broadcast, and includes a VCR, CD player, DVD player, MP3 player, STB, TV tuner, radio tuner, PC, and the like.

The DMR plays a role of executing the selected media, and includes an AV / C device such as a TV and a stereo speaker, a fountain controlled by music, and the like.

The DMP is a DMR including a UPnP Control Point (CP), and serves to select, control, and execute a selected media content, that is, functions of a Media Renderer Device (MRD) and a Media Renderer Control Point (MRCP) .

The DLNA guideline aims at 'interoperability', and 'interoperability' in DLNA means 'the ability of a system or product to work with other systems or products without special efforts by the customer.' The term refers to.

However, in the conventional DLNA network, although a lot of contents are stored in various devices, the content classification in the DLNA network is classified by the device manufacturer (eg, content file name classification, text content classification). Etc.),

In addition, in the conventional DLNA network, there is a problem that digital content management (DCM) technology and digital media server (DMS) technology, which is a technology that enables content classification according to a user's selection, may not interwork with each other.

The present invention is to solve the above problems,

Digital Content Management (DCM) technology, which is a content classification technology in DLNA, is applied to digital media server (DMS) to classify content in DLNA network, which enables users to classify various contents on DLNA network according to user's choice. It is an object of the present invention to provide a method and apparatus.

According to an embodiment of the content classification method using the digital content management function in the DLNA network according to the present invention for achieving the above object,

A first step of searching for contents on a DLNA network at regular intervals;

The list of retrieved contents is converted into a digital content management (DCM) function.

Analyzing and storing the data in a database;

A third step of classifying the contents stored in the database for each category and setting a specific state variable value in each category;

Receiving a request for providing content from the DLNA network;

A fifth step of checking a state variable value for each category of the requested content;

A sixth step of transmitting the identified content URI to a digital media server;

A content classification method using a digital content management function is provided in a DLNA network including a seventh step of acquiring the identified content from the digital media server.

In addition, according to an embodiment of the content classification device using the digital content management function in the DLNA network for achieving the object of the present invention,

Means for retrieving content on a DLNA network at regular intervals;

The list of retrieved contents is converted into a digital content management (DCM) function.

Means for analyzing and storing;

Means for classifying the stored content into categories and setting specific state variable values in each category ;

Means for receiving a request for providing specific content from the DLNA network;

Means for checking a state variable value for each category of the requested content;

Means for sending the URI of the identified content to a digital media server;

A content classification apparatus using a digital content management function in a DLNA network including means for obtaining the identified content from the digital media server.

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

2 is a view showing an embodiment of a content classification method using a digital content management (DCM) function according to the present invention.

The digital media server has both a digital content management (DCM) function, a digital media server (DMS) function, and a digital media controller (DMC) function.

Store and distribute content on a DLNA network according to the digital content management function, discover content stored in a digital media server (DMS) of a DLNA network according to the digital media controller function, and convert the content into a digital media renderer (DMR). The data processing capacity is matched and the DMS and the DMR are connected.

According to the content classification method using the DCM function of FIG. 2, a picture including one's own appearance, music to be listened to, and a specific scene (for example, a soccer game) from various contents stored in a plurality of DLNA devices connected to a DLNA network. Search for videos on goal-in scenes, etc.

FIG. 3 is a diagram illustrating a linkage relationship between a digital content management (DCM) function and a digital media server (DMS) according to the present invention.

As shown in FIG. 3, various contents of the DLNA network may be directly stored in the digital media server, or the contents may be classified and stored by category using a DCM function. In this case the DCM function acts as a sub-system of the DMS.

An embodiment in which content is classified by category using the DCM function is illustrated in FIG. 3. In other words, a folder is generated for each category of Gyeongbokgung outing photo, exciting music, quiet music, etc. through the DCM function, and various contents on the DLNA network are stored in the folder generated for each category.

4 is a module block diagram showing the interaction between software configuration modules of a content classification device (hereinafter, DCM DLNA device) according to the present invention.

Content classification apparatus according to the present invention, means for retrieving the content on the DLNA network at regular intervals; Means for analyzing and storing the list of retrieved contents by a digital content management (DCM) function ; Means for classifying the stored content into categories and setting specific state variable values in each category ; Means for receiving a request for providing specific content from the DLNA network; Means for checking a state variable value for each category of the requested content; Means for transmitting the identified content URI to a digital media server; means for obtaining the identified content from the digital media server.

In a preferred embodiment according to the present invention, the software module of the DCM Digital Content Management DLNA device (Transport Digital Module Management DLNA device), the DLNA DMC module (DLNA Digital Media Controller module) 4013, DCM (Digital) It includes a Contents Management (4015), a metadata database (4017), a DLNA Digital Media Server module (4019).

The transport module 4011 functions as a network interface between the DCM DLNA device and the DLNA network.

The DMC module 4013 discovers content stored in a digital media server (DMS) of a DLNA network, matches the content to a data processing capacity of the digital media renderer (DMR), In this embodiment, the DLNA DMC module searches for content on the DLNA network and creates a content list (step 401). Subsequently, the DCM protocol is requested to analyze the content list (step 402).

The DCM analyzes the searched content based on a text, a photo, an image, an audio, and the like. Therefore, even when searching for a content whose file name is not written in text, a group photo including a specific image (for example, a face of a specific person or a part of a specific building), for example, a group picture including a face of a specific person. , Landscape photos that contain a particular building), and so on. The DCM stores the analyzed content information as metadata (meta data) in the metadata database 4017 (step 403).

The DLNA DMS module (4019), including the content directory service (Contents Directory Service) (4019a) , AVTransport Service (4019b), connection manager service (Connection Manager Service) (4019c) provides the content data,

In the present invention, the content stored in the metadata database (Base metadata 4040) in any category (e.g., music, video, photographs (landscape photographs, city photographs, night scene photographs, architectural photographs, portrait photographs, animal photographs) Etc.) and set specific state variable values (e.g., 1 for music, 2 for video, 3 for night scene) for each category (step 404).

If there is a request action for the DLNA DMS module 4019 through the content directory service from the external device on the DLNA network as described above (step 405), the state variable value for the category of the requested content It is checked by the DCM function whether it is a category that can be classified by the content classification apparatus according to the present invention (step 406).

For example, the requested content is 'gay gay music' and 'gay gay music' is not stored in the metadata database 4017 and thus is not classified as a content category and therefore no state variable value exists for that category. If so, the content request is not accepted and the operation of the DCM DLNA device is terminated.

However, if the requested content is 'night view photography', the state variable value for the night view photography category is set to 3, and the requested content is content that can be provided classified from the metadata database and stored in the metadata database. The URI of the content is sent to the digital media server (step 407),

As the content directory service of the DLNA exports the content of the URI, the external device on the DLNA network acquires the requested content (step 408).

5 is a flowchart illustrating a content classification method using a digital content management function in a DLNA network according to the present invention.

As a content classification device used in the content classification method according to the present invention, a DCM DLNA device (Digital Contents Management DLNA device) accesses a DLNA network and waits.

Subsequently, retrieving the content on the DLNA network at regular intervals is performed (steps 501 and 503).

The content retrieval is performed by a digital media controller module (DMC module) of the DCM DLNA device. The digital media controller (DMC) discovers content stored in a digital media server (DMS) of a DLNA network, matches the content to a data processing capacity of a digital media renderer (DMR), and connects the DMS and the DMR. This is a protocol.

In addition, since contents on the DLNA network are searched at regular intervals, the contents that the DMS can provide are periodically upgraded.

Subsequently, the digital media controller module (DMC module) analyzes the entire list of the searched contents using the digital content management (DCM) protocol (step 505).

The digital media server has both a digital content management (DCM) function, a digital media server (DMS) function, and a digital media controller (DMC) function.

Store and distribute content on a DLNA network according to the digital content management function, discover content stored in a digital media server (DMS) of a DLNA network according to the digital media controller function, and convert the content into a digital media renderer (DMR). The data processing capacity is matched and the DMS and the DMR are connected.

The DCM protocol analyzes the searched content on the basis of a text, a photo, an image, a voice, and the like. Therefore, even when searching for a content whose file name is not written in text, a group photo including a specific image (for example, a face of a specific person or a part of a specific building), including a specific image (for example, a face of a specific person). , Landscape photos that contain a particular building), and so on. The analyzed content information is stored in the metadata database as metadata (step 507).

Subsequently, the DLNA DMS module classifies the contents stored in the database by any category using a contents directory service, an AVTransport service, and a connection manager service according to DLNA guidelines. Each state value is set (step 509). The state variable is a variable required to set the category of the content analyzed by the DCM protocol, and is defined as shown in [Table 1].

TABLE 1

Variable Name Req or Opt Data type Allowed Value Default Value DCMCategory Opt String String -

In the present invention, the content stored in the metadata database (Metadata DataBase) in any category (for example, music, video, photographs (landscape pictures, urban pictures, night landscape pictures, building pictures, portrait pictures, animal pictures, etc.)) For each category, set specific state variable values (for example, 1 for music, 2 for video, 3 for night scenes).

In the above state, it is checked whether there is a content request for the DLNA DMS module from the external device on the DLNA network through the content directory service (step 511).

If there is no request for providing specific content and no request for providing other content, the content classification step returns to the waiting state.

The specific content providing request from the DLNA network includes an action for comparing a state variable for a category of content retrieved from the DLNA network, a GetDCMCategory Action for checking whether the category is classified by the DMC module, and the DMS module. The SetDCMCategory Action requesting the DCM to classify.

The state variable is a variable necessary to confirm whether or not the state variable of the category of the content analyzed by the DCM matches, and is defined as shown in [Table 2].

TABLE 2

Variable Name Req or Opt Data type Allowed Value Default Value DCMCategory Opt String String -

In addition, the GetDCMCategory Action is defined as shown in [Table 3],

TABLE 3

Name Req or Opt GetDCMCategory Opt

The GetDCMCategory function is defined as shown in [Table 4].

TABLE 4

Argument (s) Direction Type Description relatedStateVariable GetDCMCategory Out String This is an Action CSV format that identifies categories of categories that can be classified as DCM. It displays the category for contents after Contents Type (1 = Photo, 2 = Music, 3 = Video). DCMCategory

On the other hand, SetDCMCategory Action is defined as shown in [Table 5],

TABLE 5

Name Req or Opt SetDCMCategory Opt

The SetDCMCategory function is defined as shown in [Table 6].

TABLE 6

Argument (s) Direction Type Description relatedStateVariable SetDCMCategory In String Action to request DCM classification of desired Category for Contents DCMCategory ContentsType In String Specify the type of content to request classification (1 = Photo, 2 = Music, 3 = Video)

Next, the state variable value for each category of the requested content, that is, the category of the requested content is checked (step 513), and the state variable value for the category of the requested content is determined by the content classification apparatus according to the present invention. It is checked by the DCM function whether it is a categorizable category (step 515).

If the category of the requested content is not a category that can be classified by the content classification apparatus, it is checked whether there is another content providing request, and if there is no content providing request, the content classification step returns to the standby state.

However, if the category of the requested content is a category that can be classified by the content classification apparatus, the content URI corresponding to the requested content is retrieved by the DCM protocol and transmitted to the digital media server through a content directory service (517).

Subsequently, the digital media server exports the specific content to an external device of the DLNA network that has requested the content, in step 519.

On the other hand, if there is another content request (step 521), the process returns to step 513 and the subsequent procedure is repeated, and if there is no other content request, the content classification process according to the present invention ends.

In the above, specific preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made by those skilled in the art without departing from the gist of the present invention attached to the claims. will be.

According to the present invention, by applying digital content management (DCM) technology, which is a content classification technology in DLNA, to a digital media server (DMS), various contents on a DLNA network can be classified according to a user's selection.

Claims (10)

A first step of searching for contents on a DLNA network at regular intervals; The list of retrieved contents is converted into a digital content management (DCM) function. Analyzing and storing the data in a database; A third step of classifying the contents stored in the database for each category and setting a specific state variable value in each category; Receiving a request for providing specific content from the DLNA network; A fifth step of checking a state variable value for each category of the requested content; A sixth step of transmitting the identified content URI to a digital media server; And a seventh step of acquiring the identified content from the digital media server. The method of claim 1, The digital media server has both a digital content management (DCM) function, a digital media server (DMS) function, and a digital media controller (DMC) function. Store and distribute content on a DLNA network according to the digital content management function; Discovering content stored in a digital media server (DMS) of a DLNA network according to the digital media controller function, matching the content to a data processing capacity of a digital media renderer (DMR), and connecting the DMS and the DMR. Content classification method using digital content management in DLNA network. The method of claim 1, The specific content providing request from the DLNA network includes an action of checking a state variable for a category of content retrieved from the DLNA network, a GetDCMCategory Action for checking whether the category is classified by the DMC module, and the DMS module. And a SetDCMCategory Action requesting the DCM for classification. 3. The method of claim 1, further comprising: a digital content management (DCM) in a DLNA network. The method according to claim 1 or 3, The state variable is a variable required to set a category of the content, and is defined as shown in [Table 7]. TABLE 7 Variable Name Req or Opt Data type Allowed Value Default Value DCMCategory Opt String String - The method of claim 3, wherein The GetDCMCategory Action is a content classification method using digital content management (DCM) in a DLNA network, characterized in that defined as shown in [Table 8]. TABLE 8 Name Req or Opt GetDCMCategory Opt The method of claim 5, The GetDCMCategory function is a content classification method using digital content management (DCM) in a DLNA network, characterized in that it is defined as shown in [Table 9]. TABLE 9 Argument (s) Direction Type Description relatedStateVariable GetDCMCategory Out String This is an Action CSV format that identifies categories of categories that can be classified as DCM. It displays the category for contents after Contents Type (1 = Photo, 2 = Music, 3 = Video). DCMCategory The method of claim 3, wherein The SetDCMCategory Action is a content classification method using digital content management (DCM) in a DLNA network, characterized in that defined as shown in [Table 10]. TABLE 10 Name Req or Opt SetDCMCategory Opt The method of claim 7, wherein The SetDCMCategory function is a content classification method using digital content management (DCM) in a DLNA network, characterized in that it is defined as shown in Table 11. TABLE 11 Argument (s) Direction Type Description relatedStateVariable SetDCMCategory In String Action to request DCM classification of desired Category for Contents DCMCategory ContentsType In String Specify the type of content to request classification (1 = Photo, 2 = Music, 3 = Video) Means for retrieving content on a DLNA network at regular intervals; The list of retrieved contents is converted into a digital content management (DCM) function. Means for analyzing and storing; Means for classifying the stored content into categories and setting specific state variable values in each category ; Means for receiving a request for providing specific content from the DLNA network; Means for checking a state variable value for each category of the requested content; Means for sending the URI of the identified content to a digital media server; And a means for obtaining the specific content from the digital media server. The method of claim 9, The digital media server has both a digital content management (DCM) function, a digital media server (DMS) function, and a digital media controller (DMC) function. Store and distribute content on a DLNA network according to the digital content management function; Discovering content stored in a digital media server (DMS) of a DLNA network according to the digital media controller function, matching the content to a data processing capacity of a digital media renderer (DMR), and connecting the DMS and the DMR. Content classification apparatus using digital content management in a DLNA network.

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