KR101501923B1 - Method and system for Adaptive Data Transmission based on DLNA network - Google Patents

Abstract

 The present invention relates to an adaptive data transmission method and system in a DLNA (Digital Living Network Alliance) network environment.

According to the present invention, an individual content list is generated based on characteristics information of a device for reproducing a content and user preference information about the content reproduced by the device, and a specific content can be selected based on the generated individual content list. That is, the digital media server collects only a list of contents that can be reproduced by the digital media renderer, generates an individual content list, and rearranges the order of the content list based on the user preference information so that the user can select the content more quickly and easily .

DLNA, DMS, DMR, DMC, List

Description

[0001] The present invention relates to an adaptive data transmission method and a transmission system in a DLNA network environment,

The present invention relates to an adaptive data transmission method and a transmission system in a DLNA network environment, and more particularly, to a system and method for identifying a list and files that a DMR can play according to characteristics of the DMR and transmitting corresponding lists and files to the DMR To an adaptive data transmission method and transmission system in a DLNA network environment.

Recently, there have been more and more scenes of exchanging AV (audio / video) contents such as music and video using an IP network. For example, it is natural to watch TV programs on the Internet or listen to music. And the tendency to exchange AV content over the network is also spreading to the home. Therefore, home is a trend that easily connects AV devices to home networks that enjoy AV contents. To realize this, various automation mechanisms are needed. It is not merely that a home appliance is connected to a LAN interface or a wireless LAN function, but it should be set so that it can recognize the existence of each other through the network, investigate whether or not the content exists, and exchange desired contents.

Various middleware (UPnP, HaVi, Jini, VESA, DLNA ...) are used to recognize the existence of the partner through the network and exchange the desired content by searching for the content.

DLNA (Digital Living Network Alliance), one of these middleware, is focused on sharing all contents provided from devices such as a TV, a VCR, a digital camera, and an audio system. For content sharing, interoperability of devices should be prioritized. Especially, the network connecting PC Internet network (PC, printer, etc.), mobile network (PDA, mobile phone, notebook), home appliance network (TV, audio, DVD player, etc.) in the home is a cooperation and interoperability framework (Operating Frame Work), and to comply with the standard, it is necessary to satisfy the operating (Operating).

In particular, the DLNA supports consumers to acquire, transmit, and manage many digital media contents (e.g., pictures, music, video, etc.) from a personal area device such as a mobile device or a PC will be. That is, it is possible to conveniently enjoy the media contents irrespective of the location and the device in the home.

For this purpose, the DLNA system is based on UPnP and is a wired and wireless network system including a DMS (Digital Media Server), a DMP (Digital Media Player), a DMC (Digital Media Controller) and a DMR (Digital Media Renderer) .

The DMS, DMP, and DMC include portable M-DMS (Mobile Digital Media Server), M-DMP (Mobile Digital Media Player), and M-DMC (mobile-digital media controller). The M-DMS, the M-DMP, and the M-DMC may be directly connected to the DLNA system or may be connected to the DLNA system through an access point (AP). The AP has an M-NCF (Mobile-Network Connection Function) as an intermediate node for connecting the M-DMS to the M-DMP.

The DLNA system may configure a home network using a wired network (IEEE 802.3) or a wireless network (IEEE 802.11). The DMS, the DMP, and the DMR on the home network are interconnected through a wire (IEEE 802.3) or a wireless network (IEEE 802.11). Digital devices on the home network can transmit data such as video and audio by IEEE 1394.

In particular, the interconnection standard for home network equipment called "DLNA Guidelines" for the standardization work of DLNA systems is based on the DNA (Digital Media Server), DMP (Digital Media Player), DMC (Digital Media Controller) Or DMR (Digital Media Renderer), and defines the connection conditions between the DMS and the DMP, the DMC, or the DMR.

On the other hand, the DMS transmits to the DMR a list of various contents of the DMS regardless of the characteristics or types of the DMRs. As a result, it is difficult for DMR to receive proper contents list and retrieve appropriate contents.

Accordingly, an object of the present invention is to provide a content list capable of reproducing DMR, and in the case of a DMR including a function for user preference, a content list reflecting user's preference is generated and transmitted, And an adaptive data transmission method and system in a DLNA network environment that can facilitate retrieval.

According to another aspect of the present invention, there is provided an adaptive data transmission system in a DLNA network environment, the system comprising: a digital media renderer for providing characteristic information of an apparatus and reproducing received selection contents; A digital media server for generating an individual content list that is a list of contents that the digital media renderer can reproduce based on the characteristic information and transmitting the selected content selected from the individual content lists to the digital media renderer; And a digital media controller for delivering the characteristic information to the digital media server, receiving the individual content list, and designating the selected content among the individual content lists and notifying the selected digital content to the digital media server.

According to another aspect of the present invention, there is provided an adaptive data transmission system in a DLNA network environment, the system comprising: a digital media player for providing device characteristic information; And a digital media server for generating an individual content list that is a list of contents that the digital media player can reproduce based on the characteristic information and transmitting the selected content selected from the individual content lists to the digital media renderer, The media player transmits the characteristic information to the digital media server, receives the individual content list, and then notifies the digital media server of the selected content among the individual content lists.

According to another aspect of the present invention, there is provided an adaptive data transmission method in a DLNA network environment, the method comprising: a collection step of collecting characteristic information of a playback apparatus for playing a content; Generating a list of individual contents that can be played back in the playback apparatus based on the characteristic information; A selecting step of the reproducing apparatus selecting contents to be reproduced from the individual contents list; And a transmission step of the digital media server transmitting the selected content to the playback apparatus.

According to the adaptive data transmission method and system in the DLNA network environment according to the embodiment of the present invention, the DMR receives only the contents list in which the DMR can be reproduced, or receives the contents list reflecting the user's preference using the DMR, It is possible not only to receive the list but also to perform an easy content search.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, only parts necessary for understanding the operation according to the embodiment of the present invention will be described, and the description of other parts will be omitted so as not to disturb the gist of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor is not limited to the meaning of the terms in order to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

FIG. 1 is a diagram showing a schematic configuration of a data transmission system in a DLNA network environment according to an embodiment of the present invention.

1, the data transmission system of the present invention includes a digital media server (DMS) 100, a digital media controller (DMC) 200, and a digital media renderer Renderer: hereinafter referred to as DMR) 300. The data transmission system in the DLNA network environment of the present invention may further include a digital media player (DMP), an access protocol (AP), and other DMSs. However, in order to clearly and concisely explain the gist of the present invention Only necessary configurations will be described. With respect to this configuration, application examples of the above-mentioned other configurations in the application description of the present invention will be described below.

The DMS 100 has a capability of accessing contents in a UPnP (Universal Plug and Play) AV area, and stores or provides the digital media contents to the DMR 300. The DMS 100 searches for a digital media content item in the DMS 100 by a control point (CP), that is, a UI (User-Interface Application), and the DLNA network user displays the content To be distributed. The relationship between the DMS 100 and the DMR 300 may be a broadcast receiving apparatus for receiving a digital broadcast, for example, a DMS 100 receiving the broadcast signal, 200 provides the selected content to the DMR 300 upon request.

Particularly, the DMS 100 of the present invention collects characteristic information (Char_Info) related to the characteristics of the DMR 300 through the DMC 200 and stores the contents reproducible in the DMR 300 on the basis of the collected characteristic information And generates an individual content list P_list. The DMS 100 may transmit the individual content list P_list to the DMR 300 through the DMC 200. Thereafter, the DMS 100 selects one of the individual contents list P_list and transmits the content to the DMR 300.

The DMC 200 is located between the DMS 100 and the DMR 300 and transmits the characteristic information Char_Info of the DMR 300 to the DMS 100. The individual contents list P_list Can be received. The DMC 200 controls the DMS 100 to transmit the selected specific content to the DMR 300 through the transmission of a control signal between the DMS 100 and the DMR 300. If the DMR 300 includes the user preference information, the DMC 200 may transmit the user preference information to the DMS 100. The DMC 200 receives an individual content list P_list from the DMS 100 and can specify and select specific content from the individual content list P_list. The information about the contents selected by the DMC 200 is transmitted to the DMS 100 and the DMS 100 controls the DMR 300 to transmit the selected contents to the DMR 300. [ In this case, the DMC 200 may include a display unit for confirming the individual contents list P_list and an input unit for selecting specific contents. If there is no separate display unit and input unit, the display unit of the DMR 300 The individual contents list P_list can be confirmed by using the input unit.

The DMR 300 plays back the content selected by the DMC 200. At this time, the DMR 300 delivers the characteristic information (Char_Info) related to the specification of the device, the memory capacity, etc. to the DMS 100, and the individual contents list P_list generated based on the characteristic information Char_Info from the DMS 100, Lt; / RTI > Accordingly, the DMR 300 can receive and output only a content list which can be output among various contents possessed by the DMS 100. Meanwhile, when the DMR 300 is a device capable of collecting and storing information on user preferences, the user preference information may be transmitted to the DMS 100 through the DMC 200. [ In this case, the DMR 300 may receive an individual content list (P_list) to which the user preference information is applied from the DMS 100.

As described above, the adaptive data transmission system of the present invention generates and uses an individual content list based on the characteristic information indicating the device characteristics of the DMR 300, so that the DMR (300) 300 may transmit only a list of content that can be handled. In addition, in the adaptive data transmission system of the present invention, when user preference information indicating the user preference among the contents that can be reproduced in the DMR 300 is provided, an individual content list to which the user preference is applied is transmitted, And more quickly and easily.

Hereinafter, each configuration included in the data transmission system in the DLNA network environment of the present invention will be described in detail with reference to the drawings.

Figure 2 is a schematic representation of the DMS (100) structure of the present invention.

2, the DMS 100 includes a content generation unit 110, a content management unit 120, a content storage unit 130, a content transmission unit 140, a content directory regeneration unit 150, A content directory service unit 160, a connection management service unit 170, and an AV transmission service unit 180.

The content generation unit 110 is a module for directly generating content or capturing a broadcast stream to generate content. The content generation unit 110 may process content received from another DMS through a network to generate new content. The content generated by the content generation unit 110 is stored in the content storage unit 130 through the content management unit 120. [

The content management unit 120 is a module for managing content to be generated and transmitted by the content generation unit 110. [ The content management unit 120 supports the content directory regenerative unit 150 and the content directory service unit 160 to generate a content list and an individual content list. That is, the content management unit 120 provides a list of contents stored in the content storage unit 130 according to a request of the content directory regenerating unit 150 and the content directory service unit 160. The content management unit 120 stores the individual content list P_list generated by the content directory regenerating unit 150 and the content list generated by the content directory service unit 160 in the content storage unit 130.

The content storage unit 130 stores content delivered by the content generation unit 110 and stores a content list generated by the content directory service unit 160. In addition, the content storage unit 130 may store the individual content list generated by the content directory regenerator 150. The various contents, the content list and the individual content list P_list stored in the content storage unit 130 are transmitted to the DMC 200 and the DMR 300 via the content transmission unit 140, respectively.

The content transmitting unit 140 transmits the contents, the contents list and the individual contents list P_list stored in the contents storing unit 130 to the DMC 200 and the DMR 300 through the network. In other words, the contents transmitting unit 140 of the present invention transmits the individual contents list P_list to the DMC 200 and transmits the specific contents selected by the DMC 200 to the DMR 300. [

The content directory regenerating unit 150 receives the characteristic information Char_Info of the DMR 300 collected by the DMC 200 and generates an individual content list reproducible in the DMR 300 based on the received characteristic information Char_Info (P_list). At this time, when the DMR 300 has user preference information, the content directory regenerating unit 150 may receive the user preference information from the DMC 200 and generate the individual content list P_list. The content directory regenerating unit 150 receives from the DMR 300 the characteristic information including various device characteristics such as a clock of the central processing unit, memory capacity, resolution, frame rate, Char_Info). The content directory regenerating unit 150 then uses the content managing unit 120 to retrieve a content list that can be played back in the DMR 300 having the above-described characteristic information Char_Info among the contents stored in the content storing unit 130 . Accordingly, the content directory regenerating unit 150 can generate the individual content list P_list of the specific DMR 300 based on the above-described characteristic information Char_Info. The generated individual content list P_list is transmitted to the DMC 200 via the content management unit 120, the content storage unit 130, and the content transfer unit 140. [

The content directory regenerating unit 160 may operate the routines shown in Table 1 to provide individual content list services.

variable Name Req or Opt Data type Allowed Value Default Value RendererCapabilityInfo () Req String CSV format composed of Key = Value (digital signal processing capacity, CPU number, memory number, GPU number, resolution, etc.) - RendererPreferringInfo () Req String CSV format (key musical genre, favorite video genre, related person name, etc.) composed of key = value -

Referring to Table 1, the content directory regenerator 150 may operate two routines, namely RendererCapabilityInfo () and RendererPreferringInfo (). The RendererCapabilityInfo () is a routine in which the DMS 100 transmits and receives data to and from the DMR 300 through the DMC 200 in order to acquire the characteristic information Char_Info of the DMR 300. RendererPreferringInfo () is a routine in which the DMS 100 transmits / receives data to / from the DMR 300 via the DMC 200 to obtain user preference information of the DMR 300. [

Meanwhile, the DMC 200 may operate the routine shown in the following Table 2 to transmit the characteristic information (Char_Info) and the user preference information of the DMR 300 to the DMS 100.

Name Req or Opt SetRendererCapabilityInfo () Req SetRendererPreferringInfo () Req

That is, when the DMR 300 has the characteristic information Char_Info, the DMC 200 receives the characteristic information Char_Info from the DMR 300. At this time, the DMC 200 receives the characteristic information Char_Info from the DMR 300, The SetRendererCapabilityInfo () routine may be used when informing the DMS 100 that it has information (Char_Info). Accordingly, when the content directory regenerating unit 150 receives SetRendererCapabilityInfo () from the DMC 200, the content directory regenerating unit 150 recognizes the DMR 300 as a DMR capable of transmitting the characteristic information (Char_Info). Similarly, when the content directory regenerating unit 150 receives the SetRendererPreferringInfo () routine from the DMC 200, the content directory regenerating unit 150 recognizes the DMR 300 as a device capable of transmitting the user preference information, (P_list) based on the user preference information received from the user terminal 300.

The routine configuration of the SetRendererCapabilityInfo () is shown in Table 3 below, and the configuration of the routine of SetRendererPreferringInfo () is shown in Table 4 below.

Argument Direction Type Description RelatedStateVariable CapsInfo IN String Check Capability information of Renderer RendererCapabilityInfo ConnectionID IN i4 Connection ID (opt) associated with the DMS CMS :: CurrentConnectionInfo ConnectionAddress IN String IP Address (Opt) of DMC connected to DMS

Argument Direction Type Description RelatedStateVariable UserInfo IN String Identify the user's preference for the Renderer RendererPreferringInfo ConnectionID IN i4 Connection ID (opt) associated with the DMS CMS :: CurrentConnectionInfo ConnectionAddress IN String IP Address (Opt) of DMC connected to DMS

In Table 3 and Table 4, the direction is described in terms of the content directory reproducible part 150. The connection ID and the connection address are provided in an option form and can be information of the connection channel currently established between the DMC 200 and the DMS 100. The actual information in the SetRendererCapabilityInfo and SetRendererPreferringInfo may be CapsInfo and UserInfo, respectively.

The content directory service unit 160 provides a service based on a UPnP AV structure, and serves to deliver a list of contents to an external device to provide contents. That is, the content directory service unit 160 generates a schedule list, for example, a content list based on the content managed by the content management unit 120, and transmits the content list to the content storage unit 130 and the content transmission unit 130 through the content management unit 120. [ Unit 140, as shown in FIG. If the DMR 300 is a device that can not transmit the property information (Char_Info) or does not designate an individual content list service as a separate option, the content directory service unit 160 may notify the entire contents stored in the content storage unit 130 It is possible to generate and provide a list of contents about the contents.

The connection management service unit 170 manages connection with devices accessing the DMS 100 as a configuration for providing a service based on a UPnP (Universal Plug and Play) AV structure. That is, the connection management service unit 170 manages the connection of the DMR connected to the DLNA network to access the DMS 100 through the network, the connection of the DMP (Digital Media Player), and the connection of the DMC (Digital Media Controller) .

The connection management service unit 170 may control the connection with the DMC 200 by exchanging a routine including GetCurrentConnectionInfo () with the DMC 200 and the current connection information. The DMC 200 obtains information on a protocol capable of communicating with the DMR 300 using the GetProtocolInfo () routine provided by the connection management service unit 170 of the DMS 100, The connection with the DMR 300 can be controlled.

The AV transmission service unit 180 is configured to provide a service based on the UPnP AV structure. The AV transmission service unit 180 transmits a routine required for connection with the DMC 200 and a routine for connection with the DMR 300, P_list). That is, the AV transmission service unit 180 supports transmission of control signals for supporting the entire contents control service including transmission of individual contents list (P_list), reproduction of contents, suspension of contents, and pause.

As described above, the DMS 100 according to the embodiment of the present invention generates an individual content list P_list on the basis of the characteristic information (Char_Info) and the user preference information from the DMR 300 through the DMC 200, And can transmit it to the DMC 200.

3 is a schematic view of the DMR 300 structure of the present invention.

Referring to FIG. 3, the DMR 300 includes a content transmitter / receiver 310, a format decoder 320, a rendering unit 330, a memory 350, and a controller 340.

The content transmitting / receiving unit 310 transmits the characteristic information (Char_Info) and the user preference information to the DMS 100 through the DMC 200. The content transmitting / receiving unit 310 receives specific content from the DMS 100.

The format decoding unit 320 decodes a signal received by the content transmitting and receiving unit 310 and transmits the decoded signal to the control unit 340 or the rendering unit 330 according to the information. That is, if the received signal is decoded by the format decoding unit 320, the format decoding unit 320 transmits the decoded signal to the rendering unit 330. When the received signal receives GetProtocol () to acquire other routines such as the protocol described above, the format decoding unit 320 transmits the received GetProtocol () to the controller 340.

The rendering unit 330 outputs a signal obtained by decoding the content among the information decoded by the format decoding unit 320. The rendering unit 330 includes a buffer for temporarily storing the decoded contents and an output unit for outputting the decoded contents. Here, the output unit may include a display unit capable of outputting a video signal and an audio processing unit capable of outputting an audio signal. Meanwhile, the rendering unit 330 may control the reproduction control operation of the contents according to the control signal transmitted from the DMC 200. [ That is, the DMC 200 directly generates the reproduction control signal and transmits the reproduction control signal to the rendering unit 330, so that the DMC 200 can control the reproduction of the contents of the DMR 300. [ The content reproduced by the rendering unit 330 may be a signal directly received from the DMS 100 without passing through the DMC 200. [

The memory 350 may serve as a buffer for temporarily storing the decoded contents output by the rendering unit 330 and may store characteristic information Char_Info and user preference information defining the device characteristics of the DMR 300, Can be stored. Character information (Char_Info) and user preference information may be transmitted to the DMC 200 via the content transmitting / receiving unit 310 under the control of the control unit 340. The characteristic information (Char_Info) and the user preference information transmitted to the DMC 200 are transmitted to the DMS 100 again.

The control unit 340 receives the control signal of the DMC 200, that is, the signal for reproducing control of the contents provided by the DMS 100 using the DMR 300, And user preference information to the DMC 200. The control unit 340 may collect user preference information according to the device characteristics of the DMR 300. That is, the control unit 340 collects information on the list of contents to be played by the rendering unit 330 of the DMR 300, and displays the features of the lists, for example, audio preference information of contents, Can be collected. The audio preference information may be information related to an album, a singer, a genre, etc. in the case of music, and information related to a genre, a director, an actor and the like in the case of video preference information. The controller 340 generates user preference information based on the above-described preference information, and transmits the generated user preference information to the DMS 200 via the DMC 200 according to access control of the DMC 200. [

The control unit 340 may operate the state variable value table shown in Table 5 below to control the transmission of the property information (Char_Info) and the user preference information.

variable Name Req or Opt Data type Allowed Value Default Value SystemCapabilityInfo () Req String CSV format composed of Key = Value (digital signal processing capacity, CPU number, memory number, GPU number, resolution, etc.) - UserPreferringInfo () Req String CSV format (key musical genre, favorite video genre, related person name, etc.) composed of key = value -

When receiving the GetSystemCapabilityInfo () routine from the DMC 200, the control unit 340 having the routine table shown in Table 5 writes the characteristic information Char_Info in the SystemCapavilityInfo () and delivers it to the DMC 200. When receiving the GetUserPreferringInfo () routine from the DMC 200, the control unit 340 describes the user preference information in the UserPreferringInfo () and transfers the user preference information to the DMC 200.

Table 6 is a table showing detailed information of the GetSystemCapabilityInfo () routine, and Table 7 is a table showing detailed information of the GetUserPreferringInfo () routine.

Argument Direction Type Description relatedStateVariable CapsInfo OUT String Check Capability information of Renderer SystemCapabilityInfo

Argument Direction Type Description relatedStateVariable UserInfo OUT String Identify user preferences using Renderer UserPreferringInfo

In the above Tables 6 and 7, Direction may refer to a routine transmitted from the DMC 200 side to the DMR 300.

As described above, the DMR 300 of the present invention stores characteristic information (Char_Info) indicating the characteristics of the apparatus and user preference information indicating the preference of the user for reproducing the content, and according to the access control of the DMC 200 The user can transmit the above-described characteristic information (Char_Info) and user preference information to the DMS 100 via the DMC 200. Then, the DMC 200 can quickly and easily search and select the reproducible content in the DMR 300 by checking only the individual content list P_list generated based on the characteristic information (Char_Info) and the user preference information.

In the foregoing, the elements constituting the adaptive data transmission system and system of the present invention have been described. Hereinafter, an adaptive data transmission method based on the adaptive data transmission system will be described.

4 is a diagram illustrating a signal flow between transmission systems for explaining an adaptive data transmission method according to an embodiment of the present invention.

Referring to FIG. 4, in the adaptive data transmission method of the present invention, an access channel is formed between the DMS 100, the DMC 200, and the DMR 300 in step S101. In other words, the user can use the service for playing back specific content using the specific DMR 300 by using the DMC 200. [ At this time, it is possible to select the DMR 300 which can be controlled by the user DMC 200, and to attempt connection with the DMS 100 to which the contents are to be transmitted. Here, the DMS 100 may collect the connection information of the specific DMC 200 by transmitting a routine such as GetCurrentConnectionInfo () to the DMC 200 using the connection management service unit 170. The DMS 100 may collect the protocol information for the content reproduction of the DMR 300 by transmitting the GetProtocol () routine to the DMR 300 through the DMC 200. [

According to the access control of the DMC 200, the specific DMR 300 transmits the characteristic information (Char_Info) stored in the memory 350 to the DMC 200 in step S102. Then, the DMC 200 delivers the received characteristic information (Char_Info) to the connected DMS 100 in step S103. More specifically, the DMC 200 transmits a GetSystemCapabilityInfo () routine to the DMR 300, and the DMR 300 transmits a SystemCapabilityInfo () routine including the characteristic information (Char_Info) to the DMC 200 in response to the routine. . The DMC 200 then extracts the property information (Char_Info) contained in the SystemCapabilityInfo () routine and sends the SetRendererCapabilityInfo () routine containing this information to the DMS 100. [ Upon receiving the SetRendererCapabilityInfo () routine from the DMC 200, the DMS 100 extracts the characteristic information Char_Info included in the routine and grasps the device characteristics of the DMR 300 that the current DMC 200 wants to use .

In a similar manner, the DMR 300 delivers the user preference information to the DMC 200 in step S104, and the DMC 200 transmits the above-described user preference information to the DMS 200 in step S105. In detail, the DMC 200 transmits a GetUserPreferringInfo () routine to the DMR 300, receives a UserPreferringInfo () including user preference information from the DMR 300, extracts user preference information, and outputs it to SetRendererPreferringInfo (DMS 100). Accordingly, when the DMS 100 receives the SetRendererPreferringInfo () routine, it can grasp the user preference of the DMR 300 currently used. Here, steps S104 and S105 may be optionally provided. That is, the DMS 100 can receive only the characteristic information (Char_Info).

The DMS 100 receiving at least one of the characteristic information (Char_Info) and the user preference information generates an individual content list in step S107. That is, the individual content list P_list may be information including only a content list that can be reproduced in the DMR 300 by reflecting the device characteristics of the DMR 300. [ Also, the individual content list P_list reflects the user preference information, and the priorities of the lists can be rearranged on the basis of the user's preferred genre and field. For example, if the user's favorite field is 2 in the first, second, and third fields, the second field is arranged with the highest priority and the remaining fields are rearranged according to the user's preference, If not, can be rearranged to certain criteria, for example, Arabic numerals, alphabets, abc, and the like.

When the individual content list P_list is generated, the DMS 100 transmits the individual content list P_list to the DMC 200 in step S109. The user can check the individual contents list P_list using the DMC 200 and can select specific contents to be reproduced from the individual contents list P_list. On the other hand, when the DMC 200 does not provide a separate display unit and an input unit, the individual content list P_list can be displayed using the display unit and the input unit of the DMR 300. [

Next, the DMC 200 alerts the DMS 100 and the DMR 300 of preparation for connection to reproduce a specific content. To this end, the DMC 200 can prepare the connection by transmitting the PrepareForConnection () routine to the DMS 100 and the DMR 300, respectively. In step S113, the DMC 200 alerts the DMS 100 and the DMR 300 of the specific content selected from the individual content list P_list.

Here, the DMC 200 transmits specific contents information selected in the SetAVTransportURI () routine to the DMS 100 and the DMR 300, and transmits Play () routines for starting content transmission when the routine transmission is completed To the DMS 100 and the DMR 300. [

Then, the DMS 100 transmits the content related signal selected by the DMC 200 to the DMR 300 in step S115. At this time, the DMS 100 and the DMR 300 can transmit and receive contents using Out of Band regions other than UPnP, respectively. If the content transmission is not completed, the DMC 200 branches the content to step S115 and maintains the content transmission. If the content transmission is completed, the DMC 200 branches to step S119, ) And the DMR (300). At this time, the DMC 200 may transmit information to the DMS 100 and the DMR 300 including information on the end of the transfer using the TransferComplete () routine.

As described above, the adaptive data transmission system and the adaptive method according to the embodiment of the present invention are based on the individual information list (P_list) reproducible by the DMR 300 based on the characteristic information (Char_Info) of the DMR 300 It is possible to search contents quickly.

Meanwhile, although the system and method for adaptive data transmission according to the embodiment of the present invention have a configuration of DMS, DMC and DMR, the present invention is not limited thereto. That is, the adaptive data transmission system of the present invention will be applicable in a similar manner in a system in which the DMC and the DMR are configured in a single configuration. This will be described with reference to FIGS. 5 and 6. FIG.

5 is a diagram showing a schematic configuration of an adaptive data transmission system according to another embodiment of the present invention.

Referring to FIG. 5, the adaptive data transmission system of the present invention includes a DMS 100 and a DMP 400. Here, the DMS 100 performs the same function as the DMS 100 of FIG. 1, and a detailed description thereof will be omitted since it will be replaced with the description of the DMS 100 in FIG.

The DMP 400 is a form in which the DMC 200 and the DMR 300 are integrated into one device. In other words, the DMP 400 is a DMR including a CP (UPnP Control Point) or a DMC, and functions as a Media Renderer Device (MRD) and a Media Renderer Control Point (MRCP) Can be performed.

A data transmission system having such a configuration allows a user to directly control the DMP 400 to form an access channel with the DMS 100 and to receive and reproduce specific contents from the DMS 100. At this time, the DMP 400 may transmit to the DMS 100 the characteristic information (Char_Info) and the user preference information, which are device characteristics of the DMP 400, at the time of connection with the DMS 100. Then, the DMS 100 generates an individual content list (P_list) based on the characteristic information (Char_Info) and the user preference information, and can transmit the individual content list (P_list) to the DMP (400). The DMP 400 receiving the individual content list P_list displays it, and informs the DMS 100 of the content-related information selected by the user. Accordingly, the DMS 100 delivers the selected content to the DMP 400, and the DMP 400 can reproduce the content desired by the user.

6 is a diagram illustrating a signal flow between transmission systems for explaining an adaptive data transmission method according to another embodiment of the present invention.

Referring to FIG. 6, in the adaptive data transmission method of the present invention, the connection channel between the DMS 100 and the DMP 400 is formed in step S201, and the DMP 400 is connected to the DMS 100 in step S203. And transmits characteristic information (Char_Info). The DMP 400 may transmit the user preference information to the DMS 100 in step S205. The step S205 may be optionally provided when the DMP 400 provides user preference information, and may be omitted if necessary.

Next, the DMS 100 generates an individual content list (P_list) based on at least one of the characteristic information (Char_Info) and the user preference information received in step S207. Thereafter, the DMS 100 transmits the individual content list P_list to the DMP 400 in step S209. Upon receipt of the individual content list P_list, the DMP 400 prepares to select and reproduce the specific content. To this end, the DMP 400 requests the DMS 100 to prepare for connection in step S211, and notifies the DMS 100 of the selected content selected by the user in step S213. Then, the DMS 100 transmits information about the selected content to the DMP 400 in step S215. On the other hand, the DMP 400 maintains the content transmission on the basis of step S217, which confirms whether the transmission is completed, or branches to step S219 to terminate the transmission.

As described above, the adaptive data transmission system and method according to another embodiment of the present invention is also similar to the adaptive data transmission system and method of the present invention described above by receiving and confirming only the contents list reproducible by the DMP, It is not necessary to receive the content list, and when the user preference information is applied, the user can quickly and easily select the preferred content.

While the present invention has been described with reference to several preferred embodiments, these embodiments are illustrative and not restrictive. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention and the scope of the appended claims.

FIG. 1 schematically illustrates a structure of an adaptive data transmission system in a DLNA network according to an embodiment of the present invention, FIG.

2 is a more detailed view of a DMS structure according to an embodiment of the present invention,

3 is a more detailed view of a DMR structure according to an embodiment of the present invention,

4 is a signal flow diagram illustrating an inter-system signal flow for illustrating an adaptive data transmission method in a DLNA network according to an embodiment of the present invention.

FIG. 5 schematically illustrates a structure of an adaptive data transmission system in a DLNA network according to another embodiment of the present invention, FIG.

6 is a signal flow diagram illustrating an inter-system signal flow for illustrating an adaptive data transmission method in a DLNA network according to an embodiment of the present invention.

Claims (22)

A method of providing content to a digital media server, Receiving characteristic information of a digital media renderer; Generating an individual content list, which is a list of contents that can be reproduced by the digital media renderer, based on the characteristic information, and transmitting the individual content list to the digital media controller; And And transmitting selected content from the individual content list to the digital media renderer, Wherein the characteristic information includes at least one of a central processing unit specification, a memory value, a resolution value, a frame rate, and an image information processing standard of the digital media renderer. The method according to claim 1, Receiving user preference information on a user's content preference; And And rearranging the generated individual content list based on the user preference information. 3. The method of claim 2, The user preference information And audio preference information based on at least one of album, artist, genre, or video preference information based on at least one of genre, director, and actor. delete A method for a digital media renderer to play content, Transmitting characteristic information of the digital media renderer to a digital media server; Receiving an individual content list reproducible by the digital media renderer based on the characteristic information; Receiving selected content from the individual content list; And And reproducing the received content, Wherein the characteristic information includes at least one of a central processing unit specification, a memory value, a resolution value, a frame rate, and an image information processing standard of the digital media renderer. 6. The method of claim 5, Further comprising transmitting user preference information on the user's content preference to the digital media server, Wherein the individual content list is rearranged based on user preference information. The method according to claim 6, The user preference information Audio preference information based on at least one of album, singer, genre, or video preference information based on at least one of genre, director, and actor. delete A method for delivering information about content to a digital media controller, Transmitting characteristic information of the digital media renderer to the digital media server; Receiving the individual content list reproducible by the digital media renderer based on the characteristic information, and transmitting the received individual content list to the digital media renderer; And And notifying the digital media server of the selected content from the individual content list, Wherein the characteristic information includes at least one of a central processing unit specification, a memory value, a resolution value, a frame rate, and an image information processing standard of the digital media renderer. . 10. The method of claim 9, Outputting the individual content list; And And selecting a specific content from the individual content list according to the input signal. delete A digital media server for providing content, A communication unit for transmitting and receiving information; And The method comprising: receiving characteristic information of a digital media renderer, generating an individual content list, which is a list of contents that the digital media renderer can reproduce, based on the characteristic information, and transmitting the selected content list to the digital media controller, To the digital media renderer, Wherein the characteristic information includes at least one of a central processing unit specification, a memory value, a resolution value, a frame rate, and an image information processing standard of the digital media renderer. 13. The method of claim 12, The control unit And controls to rearrange the generated individual contents list based on the user preference information. The digital media server of claim 1, 14. The method of claim 13, The user preference information Audio preference information based on at least one of album, singer, genre or video preference information based on at least one of genre, director, and actor. delete A digital media renderer for playing back content, A communication unit for transmitting and receiving information; And Receiving characteristic information of the digital media renderer to a digital media server, receiving an individual content list reproducible by the digital media renderer generated based on the characteristic information, receiving selected content from the individual content list, And a control unit for controlling the reproduction of the received content, Wherein the characteristic information includes at least one of a central processing unit specification, a memory value, a resolution value, a frame rate, and an image information processing standard of the digital media renderer. 17. The method of claim 16, Wherein the control unit controls the digital media server to transmit user preference information on the content preference of the user, Wherein the individual content list is rearranged based on user preference information. 18. The method of claim 17, The user preference information Audio preference information based on at least one of an album, a singer, a genre, or video preference information based on at least one of a genre, a director, and an actor. delete 1. A digital media controller for delivering information about content, A communication unit for transmitting and receiving information; And And transmits the received individual contents list to the digital media renderer when the individual contents list reproducible by the digital media renderer generated based on the property information is transmitted to the digital media renderer And a control unit for designating the selected content from the individual content list and notifying the selected content to the digital media server, Wherein the characteristic information includes at least one of a central processing unit specification, a memory value, a resolution value, a frame rate, and an image information processing standard of the digital media renderer. 21. The method of claim 20, The control unit And outputs the individual content list, and selects a specific content from the individual content list according to an input signal. delete

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