KR20120094350A - Methods of providing limited contents list in dlna home network system, digital media server and digital media player - Google Patents

Methods of providing limited contents list in dlna home network system, digital media server and digital media player Download PDF

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Publication number
KR20120094350A
KR20120094350A KR1020110013802A KR20110013802A KR20120094350A KR 20120094350 A KR20120094350 A KR 20120094350A KR 1020110013802 A KR1020110013802 A KR 1020110013802A KR 20110013802 A KR20110013802 A KR 20110013802A KR 20120094350 A KR20120094350 A KR 20120094350A
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South Korea
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digital media
media player
media server
contents
content list
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KR1020110013802A
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Korean (ko)
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김동호
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(주)휴맥스
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H04L12/2807—Exchanging configuration information on appliance services in a home automation network
    • H04L12/2812—Exchanging configuration information on appliance services in a home automation network describing content present in a home automation network, e.g. audio video content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

PURPOSE: A method for supplying a content list, a digital media server performing the same, and a digital media player are provided to in a DLNA(Digital Living Network Alliance) based home network system are provided to supply a content list which is restricted in a digital media server of a DLNA based home network system. CONSTITUTION: An authentication processing unit(101) performs an authentication process with a digital media player. A content list generating unit(103) generates a restricted content list if it fails to authenticate a device for the digital media player. The restricted content list includes reproducible contents in the digital media player. The content list generating unit transmits the restricted content list to the digital media player.

Description

Method of Providing Limited Content List in DLAN-based Home Network System, Digital Media Server and Digital Media Player for Performing the Method

The present invention relates to a method for providing a content list in a DLNA-based home network system.

The Digital Living Network Alliance (DLNA) standardization has been ongoing until recently to establish guidelines that must be followed for interoperability between various devices in the home / office and to verify compliance with the guidelines. DLNA enables interoperability among various devices such as digital AV devices or personal computers connected to a home network, so that content such as music, moving pictures, and still images can be shared among various devices in the home network.

DLNA certified devices in the home network are compatible with each other through wired and wireless networks. In other words, DLNA is based on UpnP (Universal Plug and Play), which enables digital devices such as home appliances, PCs, and wireless devices of different manufacturers to be connected to each other via wired and wireless home networks to share content.

Based on the characteristics of the DLNA, the contents can be shared between DLNA authentication terminals. In order to search contents stored in one or more DLNA authentication terminals having a storage area, a text-based query is transmitted, and contents similar to the query word are searched in each terminal, and the corresponding contents are shared between DLNA-certified devices through the home network. Done.

Such DLNA-based content sharing technology is applicable only to content that does not have a DRM, and restricts playback of a terminal that does not include a corresponding DRM license for content having a DRM. Here, Digital Rights Management (DRM) is a comprehensive digital content protection technology that prevents illegal copying and use of digital content and allows only authorized users to use the digital content.

However, in DLNA, a digital media server (DMP) provides a list of contents and metadata to a digital media player (DMP). The DMP is denied access to content that does not have the relevant DRM rights.

In the past, DMS provides the entire list of contents held by DMS to DMP. Accordingly, the user sees the entire contents list including contents without permission through DMP. There is a problem that can be an advantage. In addition, since the DMP user cannot know which of the contents shown in the entire contents list provided by the DMS is denied access, it is inconvenient to use the contents.

Accordingly, a first object of the present invention is to provide a method capable of providing a restricted content list in a digital media server of a DLNA-based home network system.

It is a second object of the present invention to provide a digital media server of a DLNA-based home network system capable of providing a limited list of contents.

It is a third object of the present invention to provide a digital media player for receiving a restricted content list from a digital media server of a DLNA-based home network system.

A method of providing a restricted content list in a home network system including a digital media server and at least one digital media player according to an aspect of the present invention for achieving the first object, wherein the digital media server is the digital media player. And performing a device authentication procedure; and if the digital media server fails to authenticate the device for the digital media player, a restricted content list including contents that can be played in the digital media player among contents held by the digital media server. Transmitting to the digital media player.

According to another aspect of the present invention, there is provided a method of providing a restricted content list in a home network system including a digital media server, at least one digital media renderer, and a digital media controller. Performing a device authentication procedure with the digital media controller; and if the digital media server fails to authenticate the device with the digital media controller, the digital media server includes contents that can be played in the digital media renderer among contents held by the digital media server. Sending the restricted content list to the digital media controller.

A digital media server used in a digital living network alliance (DLNA) based home network system according to an aspect of the present invention for achieving the second object includes an authentication processor configured to perform a device authentication procedure with a digital media player; If the device authentication fails for the media player includes a content list generator for generating a limited content list consisting of the contents that can be played in the digital media player and transmits to the digital media player.

A digital media player used in a digital living network alliance (DLNA) based home network system according to an aspect of the present invention for achieving the third object, generates identification information in response to an authentication information request message provided from a digital media server. An identification information generation unit and an authentication processing unit configured to provide the identification information to the digital media server to perform a device authentication procedure with the digital media server, wherein the digital media player is configured to perform the device authentication failure. Receives from the digital media server a limited content list of contents held by the digital media server that can be played in the digital media player.

According to the embodiments of the present invention, only a limited list of contents may be provided to the user so that the DMP can be reproduced only for the recorded broadcasting contents allowed by the operator.

In addition, by providing a limited list of contents to the user, compared to the existing full list of contents, it is possible to prevent the user from viewing contents without permission. You can block.

1 shows an embodiment of a DLNA-based home network structure to which the present invention is applied.
2 is a diagram illustrating a message flow between a DMP and a DMS according to an embodiment of the present invention.
3 is a flowchart illustrating the operation of a DMS according to an embodiment of the present invention.
4 shows an example of contents lists according to the present invention.
5 is a block diagram showing the configuration of a digital media server (DMS) according to an embodiment of the present invention.
6 is a block diagram showing the configuration of a digital media player (DMP) according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

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

1 shows an embodiment of a DLNA-based home network structure to which the present invention is applied.

The DLNA-based home network includes components such as the DMS 100 and the plurality of DMPs 210 to 230.

The digital media server (DMS) 100 is a device for providing media content on a DLNA-based home network, and a set-top box, a desktop, or a notebook PC supporting mobility may serve as a DMS. In FIG. 1, the DMS 100 is connected to the first DMP 210 to the third DMP 230 through the network 300. The digital media player (DMP) 210-230 is a device that provides a function of selecting and controlling media content on a home network and playing back the selected content. In some cases, the DMP may have a DMS function, and in some cases, the DMS may have a DMP function. The DMS 100 and the DMPs 210, 220, and 230 may be connected to a wireless or wired home network.

The DMS 100 may provide a list of contents and metadata to the first DMP 210 to the third DMP 230. This content and metadata list may include various media types, such as songs in an MP3 player, slides composed of still images, movies in a DVD-jukebox, TV schedules and the like.

In the prior art, when the DMS 100 receives a connection request from the DMP, the DMS 100 provides the first DMP 210 to the third DMP 230 with a list of all contents held by the DMP that requested the connection, which is a DLNA standard. According to.

On the other hand, unlike the prior art, the DMS 100 according to the embodiments of the present invention sends a list of all of its contents to one DMP and a list of some of the contents of the entire contents to another DMP. This process will be described in more detail with reference to FIG. 2.

2 is a diagram illustrating a message flow between a DMP and a DMS according to an embodiment of the present invention.

The DMS 100 stores information on DRM authority (hereinafter, referred to as DRM authority information) that DMPs have. Accordingly, the DMS 100 may identify which of the contents each DMP has access to the DMS 100 itself. The DMS 100 generates a list only in relation to contents accessible by the DMP requesting access to the DMS based on the DRM authority information, and provides the list to the requested DMP. Therefore, the DMS 100 authenticates the DMP requesting access to the DMS and provides a list of contents accessible by the authenticated DMP.

Referring to FIG. 2, the DMP 200 transmits a connection request message to the DMS 100 in step 410. Then, in step 420, the DMS 100 performs an authentication procedure with the DMP 200. In detail, in step 422, the DMS 100 requests device authentication information from the DMP 200 that has requested the connection in response to the connection request from the DMP 200. That is, the DMS 100 requests the device authentication information to the DMP in order to authenticate the DMP requested for access.

In this case, the DMP 200 is in a state of appointment with the DMS 100 regarding the authentication information request and the authentication information response. Specifically, according to an advance appointment between the DMS 100 and the DMP 200 to send the entire list, the DMS transmits an authentication information request message to the DMP 200. In this case, only the DMP predetermined according to the advance appointment is implemented to recognize the authentication information request message. For example, the device DMP manufactured by the manufacturer A may be recognized for the DMS manufactured by the manufacturer A so that the authentication information request message can be recognized.

Accordingly, when the DMP 200 receives the authentication information request message and recognizes the identification information request message, the DMP 200 encrypts the identification information of the DMP itself in step 424 in response to the authentication information request message and sends the authentication key to the DMS 100. send. Here, the identification information may be a MAC address or an IP address of the DMP.

If the DMP 200 does not recognize the identification information request message even if the DMP 200 receives the authentication information request message, it cannot transmit the identification information of the DMP itself. In this case, if the DMS 100 does not receive identification information from the DMP 200 within a predetermined time, the DMS 100 considers that the device authentication has failed and transfers the restricted list of contents held by the DMS itself to the DMP. send. Alternatively, when the identification information transmitted from the DMP (authentication key including the MAC address or IP address of the DMP) is incorrect, the DMS 100 considers that the device authentication has failed, and the content that can be played in the DMP among the contents held by the DMS itself. A limited list of these may be sent to the DMP.

As such, the present invention includes a step 422 in which the DMS 100 sends an authentication information request message to the DMP 200 and a step 424 in which the DMP 200 transmits identification information to the DMS 100. The device authentication procedure (step 420) is performed.

When the DMS 100 receives the identification information from the DMP 200, the DMS 100 authenticates the DMP 200 based on the identification information in step 440. The DMS 100 sends a complete list to the DMP 200 if authentication succeeds (step 452), and sends a restricted list to the DMP 200 if authentication fails (step 454). In more detail, when the DMP authentication fails, the DMS 100 transmits a limited list of contents owned by the DMP that can be reproduced in the DMP, instead of sending a full list of the entire contents.

Hereinafter, an example will be described with reference to FIGS. 1 and 2. When the DMS 100 performs authentication based on the identification information transmitted from the first DMP 210 and the authentication succeeds, the DMS 100 sends a full list of all contents owned by the first DMP 210. In addition, the DMS 100 performs authentication based on the identification information transmitted from the second DMP 220, and if the authentication fails, the DMS 100 sends the limited list of the entire contents owned to the second DMP 220. . That is, the DMS 100 transmits a limited list of contents which are owned by the DMP 200 to the second DMP 220 which fails to authenticate.

As such, the DMS 200 sends a restricted or complete list to the DMP 200, as indicated at 450.

As such, according to the present invention, the DMS transmits the entire list of contents to some DMPs and the restricted list of contents to some DMPs depending on whether the device authentication succeeds.

Hereinafter, the operation of the DMS according to the present invention will be described in detail with reference to FIGS. 3 and 4.

3 is a flowchart illustrating an operation of a DMS according to an embodiment of the present invention, and FIG. 4 illustrates an example of content lists according to the present invention.

Referring to FIG. 3, the DMS determines whether an access request is received from the DMP in step 510. When the DMS receives the access request from the DMP, the DMS requests authentication information from the DMP in step 520. As described above, only a predetermined DMP can recognize the authentication information request message. Therefore, the DMP that does not recognize the authentication information request message cannot transmit its identification information. When the DMP requesting access recognizes the authentication information request message, the DMP may transmit identification information of the DMP in response to the authentication information request.

Therefore, after the DMS requests the authentication information to the DMP—that is, after sending the authentication information request message—the DMS starts the timer at step 530. The DMS waits for authentication information (identification information) from the DMP until the timer expires. In more detail, the DMS determines whether to receive identification information from the DMP in step 540 after driving the timer. If the identification information has not been received, the DMS determines in step 550 whether the timer expires. The DMS waits for receipt of identification information from the DMP until the timer expires. The DMS sends a restricted list to the DMP in step 580 if no identification information is received from the DMP until the timer expires. As described above, the DMS transmits a limited list of contents owned by the DMP to the DMP.

In addition, if the DMS receives the identification information from the DMP before the timer expires, the DMS performs authentication based on the identification information in step 560 and determines whether the authentication of the DMP is successful. If the authentication of the DMP succeeds, the DMS proceeds to step 570 to transmit the full list of contents. If authentication of the DMP fails, the DMS proceeds to step 580 and sends a restricted list of contents to the DMP.

4 (a) shows a complete list of contents 600 and FIG. 4 (b) shows a limited list of contents. The entire list 600 includes information on the entire contents 601-605 of the DMS. The restricted list 610 excludes information on some of the contents B and E of the entire contents.

As described above, according to the present invention, when requesting a connection from a DMP to a DMS, for example, a content request, the DMS provides only a list of contents stored in the DMS to the DMPs that have been mutually authenticated so that they can be reproduced in the DMP. In addition, the DMS provides a limited list of contents stored in the DMS to the DMPs not mutually authenticated, thereby restricting the contents played in the DMP. Some of the contents B and E excluded from FIG. 4 (b) are contents that are not to be played without content corresponding to illegal copying or use rights, for example, viewing rights among contents recorded by a user while watching TV. You must have this to be the content you see.

5 is a block diagram showing the configuration of a digital media server (DMS) according to an embodiment of the present invention, Figure 6 is a block diagram showing the configuration of a digital media player (DMP) according to an embodiment of the present invention. The DMS or DMP may be a set top box, for example.

Referring to FIG. 5, the DMS 100 includes an authentication processor 101 and a content list generator 103.

The authentication processor 101 performs the device authentication procedure described above with reference to FIGS. 2 and 3 with the DMP 200. In detail, when the authentication processing unit 101 receives a connection request from the DMP 200, the authentication processing unit 101 transmits an authentication information request message to the DMP 200, and based on the identification information provided from the DMP 200, the DMP 200. Authenticate

When the device authentication fails as described above with reference to FIGS. 2 and 3, the content list generator 103 generates a restricted content list including contents that can be played in the DMP 200 among the contents held in the DMS 100 and the DMP. Send to 200. When the device authentication is successful as described above with reference to FIGS. 2 and 3 with respect to the DMP 200, the content list generation unit 103 generates a full content list of all contents held by the DMS 100 and the DMP 200. To send.

Referring to FIG. 6, the DMP 100 includes an authentication processor 201 and an identification information generator 203.

The identification information generator 203 generates identification information in response to the authentication information request message provided from the DMS 100. Here, the DMP 200 may be implemented such that only the DMP manufactured by the manufacturer 'A' recognizes the authentication information request message with respect to the DMS manufactured by the manufacturer 'A'.

The authentication processing unit 201 performs the device authentication procedure described above with reference to FIGS. 2 and 3 with the DMS 200. Specifically, the authentication processing unit 201 provides the generated identification information to the DMS 100 to perform the device authentication procedure with the DMS 100.

2 and 3, if the device authentication fails as described above with reference to FIGS. 2 and 3, the authentication processing unit 201 generates a restricted content list including contents that can be reproduced in the DMP 200 among the contents held in the DMS 100 from the DMS 100. It is provided.

When the device authentication succeeds as described above with reference to FIGS. 2 and 3, the authentication processing unit 201 is provided with the entire contents list of the entire contents held by the DMS 100 from the DMS 100.

In FIG. 5 and FIG. 6, only main components of the DMS and the DMP are shown, and the remaining components for implementing the DMS and the DMP are already defined in the DLNA standard, and thus not shown in the drawings.

According to the present invention having such a configuration, only a limited list of contents can be provided to the user so that the DMP can be reproduced only for the recorded broadcast contents allowed by the operator. In addition, by providing a limited list of contents to the user, compared to the existing full list of contents, it is possible to prevent the user from viewing contents without permission. You can block.

In the above description, only a case of transmitting a content list from a digital media server (DMS) to a digital media player (DMP) has been described as an example. However, the present invention is not limited thereto, and the present invention is not limited thereto. The same may be applied to the case of transmitting a content list to a digital media controller (DMC).

When the content list is transmitted from the DMS to the DMC for playback in the Digital Media Renderer (DMR), a device authentication procedure is performed between the DMS and the DMC. The content list is provided from the DMS to the DMC, and the DMC is one of the delivered lists. Select content to play in DMR. DMR plays only the role of playback, so there is no device authentication.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

100: DMS 210, 220, 230: DMP
300: Network

Claims (11)

A method of providing a restricted content list in a home network system comprising a digital media server and at least one digital media player, the method comprising:
The digital media server performing a device authentication procedure with the digital media player; And
If the digital media server fails to authenticate the device to the digital media player, transmitting to the digital media player a restricted content list of contents held by the digital media server that can be played in the digital media player. Limited content list providing method characterized in that. The method of claim 1, wherein the digital media server performs a device authentication procedure with the digital media player.
Transmitting an authentication information request message to the digital media player when the digital media server receives a connection request from the digital media player;
Transmitting identification information of the digital media player to the digital media server when the digital media player recognizes the authentication information request message; And
And the digital media server authenticating the media player based on the identification information. The method of claim 2,
The method of claim 1, wherein the device authentication failure occurs when the digital media server does not receive the identification information from the digital media player within a predetermined time or when the identification information is incorrect identification information. Includes one of the digital media player's MAC address and an IP address, and the restricted content list includes contents corresponding to illegal copy and contents that should not be played without use authority among contents held by the digital media server. And the digital media server and the digital media player are set-top boxes. The digital media player of claim 2, wherein the digital media player recognizes only the digital media player manufactured by the specific manufacturer with respect to the digital media server manufactured by the predetermined manufacturer. How to provide a restricted content list. The method of claim 1,
If the digital media server succeeds in authenticating the digital media player, transmitting the entire content list of all contents held by the digital media server to the digital media player. Way. In the digital media server used in the Digital Living Network Alliance (DLNA) based home network system,
An authentication processing unit that performs a device authentication procedure with the digital media player; And
And a content list generator for generating a limited content list of contents that can be played in the digital media player and transmitting the generated content list to the digital media player when the device authentication for the digital media player fails. Media server. The digital media player of claim 6, wherein the authentication processing unit transmits an authentication information request message to the digital media player when receiving a connection request from the digital media player, and based on the identification information provided from the digital media player. Authenticate the player,
And if the authentication of the digital media player is successful, the contents list generator generates a total contents list of all contents held by the digital media server and transmits the generated contents list to the digital media player. The method of claim 7, wherein the device authentication failure occurs when the digital media server does not receive the identification information from the digital media player within a predetermined time or when the identification information is incorrect identification information. Includes one of the digital media player's MAC address and an IP address, and the restricted content list includes contents corresponding to illegal copy and contents that should not be played without use authority among contents held by the digital media server. Digital media server, characterized in that the excluded content. A digital media player used in a digital living network alliance (DLNA) based home network system,
An identification information generation unit for generating identification information in response to the authentication information request message provided from the digital media server; And
An authentication processor configured to provide the identification information to the digital media server to perform a device authentication procedure with the digital media server;
The digital media player
And when the device authentication fails, the digital media server receives from the digital media server a restricted content list including contents that can be played in the digital media player among contents held by the digital media server. The digital media player of claim 9, wherein the digital media player recognizes only the digital media player manufactured by the specific manufacturer with respect to the digital media server manufactured by a predetermined manufacturer, and recognizes the authentication information request message. Includes one of the digital media player's MAC address and an IP address, and the digital media player receives a complete contents list of all contents held by the digital media server from the digital media server when the device authentication is successful. Digital media player, characterized in that. A method of providing a restricted content list in a home network system comprising a digital media server, at least one digital media renderer and a digital media controller, the method comprising:
The digital media server performing a device authentication procedure with the digital media controller;
If the digital media server fails to authenticate the device with the digital media controller, transmitting the restricted content list of contents held by the digital media server to contents played by the digital media renderer to the digital media controller. Limited content list providing method characterized in that.
KR1020110013802A 2011-02-16 2011-02-16 Methods of providing limited contents list in dlna home network system, digital media server and digital media player KR20120094350A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101401661B1 (en) * 2012-12-26 2014-06-02 전자부품연구원 Device for managing user contents and method for handling content service in dlna system
EP2879396A1 (en) 2013-11-14 2015-06-03 Humax Co., Ltd. System and method for updating information capable of providing media content

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101401661B1 (en) * 2012-12-26 2014-06-02 전자부품연구원 Device for managing user contents and method for handling content service in dlna system
EP2879396A1 (en) 2013-11-14 2015-06-03 Humax Co., Ltd. System and method for updating information capable of providing media content
US9454650B2 (en) 2013-11-14 2016-09-27 Humax Co., Ltd. System and method for updating information capable of providing media content

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