WO2011032589A1 - Method and apparatus for supporting a media search - Google Patents

Method and apparatus for supporting a media search Download PDF

Info

Publication number
WO2011032589A1
WO2011032589A1 PCT/EP2009/062039 EP2009062039W WO2011032589A1 WO 2011032589 A1 WO2011032589 A1 WO 2011032589A1 EP 2009062039 W EP2009062039 W EP 2009062039W WO 2011032589 A1 WO2011032589 A1 WO 2011032589A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
search
unit
device
response
network environment
Prior art date
Application number
PCT/EP2009/062039
Other languages
French (fr)
Inventor
Robert Skog
Ayodele Damola
Original Assignee
Telefonaktiebolaget L M Ericsson (Publ)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/2803Home automation networks
    • H04L12/283Processing of data at an internetworking point of a home automation network
    • H04L12/2834Switching of information between an external network and a home network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1033Signalling gateways
    • H04L65/1036Signalling gateways at the edge
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/2803Home automation networks
    • H04L2012/2847Home automation networks characterised by the type of home appliance used
    • H04L2012/2849Audio/video appliances

Abstract

Method and arrangement in a multimedia gateway unit in a local network environment for supporting a media object search on an external network environment. The multimedia gateway unit receives a search query from a device unit in the local network environment and transforms the search query to a format compatible with the external network environment. The search query is sent to a search engine on an external network environment, where the search query includes at least a search request for a media object. The search response, in response to the search query, is adapted to the device capabilities of the device unit upon which the media will be rendered, and transformed to a format compatible with the local network environment. Finally, the adapted search reponse is forward to the device unit upon which the media will be rendered.

Description

METHOD AND APPARATUS FOR SUPPORTING A MEDIA SEARCH

TECHNICAL FIELD

The invention relates to a method and apparatus for supporting a media search on an external network environment from a device unit in an internal network environment.

BACKGROUND

Interoperability between devices in our home environment is steadily increasing. The aim of interoperability is to facilitate media and content sharing, and to enhance communication between interoperable devices. One example of standardized interoperability between devices in the home environment is the Digital Living Network Alliance (DLNA). DLNA is a standard defined by an industry consortium aiming to allow entertainment devices within the home to share their content with each other across a home network. DLNA intends to cut through the problems inherent in using digital media between different consumer electronic devices. For example, a DLNA compliant TV set will be able to interoperate with a DLNA compliant PC to play out music, photos or videos stored on the PC. However, the possibility of direct access to the internet is often limited from a device connectable to a local home network environment such as DLNA, typically because it is not capable of meeting authentication requirements and other security concerns.

At the same time, the internet is growing into an established source of media and content, with a wide range of content, media and related services readily available.

Content providers are increasingly using the internet as a mean to sell and distribute media and content. From a device unit in a home network environment, a user can search for, and access, content and media readily available on other devices and servers connected to the home network. However, in order to provide the devices within a local network environment with the possibility of searching and accessing content and media also from the internet, there is a need to enable and faciliate the process of accessing and searching for content and media available on the internet.

SUMMARY It is an object of the invention to basically address the problems outlined above. Further, it is an object to provide a solution that supports a media search on an external network environment from a device unit in an local network environment. These objects and others may be obtained by providing a method and arrangement according to the independent claims attached below.

According to one aspect, a method is provided in a home gateway of a local network for supporting a media object search on an external network environment from a device unit in a local network environment. In the method, a local search query is received from a device unit connected to the local network environment. The local search query is transformed into an external search query and formated such that it is adapted to the external network environment. The external search query is then sent to an search engine operating in the external network environment. The search response, e.g. a list of search hits, from the search engine is received by the home gateway and adapted to the capabilities of the device unit, connected to the local network, upon which the media object will be rendered.

The information about the capabilities of the device unit may be comprised in the search query, or the multimedia gateway may request the information from the device unit or from a storage unit storing capabilities of the device unit connected to the local network environment. In response to the search query a media object locator may be extracted from the adapted search response and sent to the device unit requesting the search or upon which the media is intended to be rendered. The information about the device capabilities may include the rendering capabilites of the device unit. The adaption may also include removing links to media objects which can not be rendered or played on the device unit, or place the links to media objects in order of relevance.

A search for a media object can originate from a first device unit connected to the local network, however, the intention being to render the media object on a second device unit connected to the local network environment. The adaptation of the search response may then be to the capabilities of the second device unit connected to the local network environment.

According to another aspect, a multimedia gateway unit is provided in a home gateway of a local network capable of supporting a search for a media object on an external network environment from a device unit connectable the local network environment. The multimedia gateway unit includes a local network module configured to receive a local search query from a device unit connectable to the local network environment. The local search query includes at least a request for a media object. The multimedia gateway unit further includes a search transformation unit configured to transform a local search query to a format adapted to an external search query on an external network environment, an external network environment module configured to send a search request for a media object to a search engine, a search response adaptor unit configured to adapt the response from a search for media objects on the external network environement, where the adaptation being performed using information about the capabilities of the device unit.

The search transformation unit may be further configured to transform an adapted search response from an external search query to a format adapted to the device units connectable to the local network environment.

Different embodiments are possible in the method and arrangement in the multimedia gateway above.

The media object locator may be a URL (Universal Resource Locator) or URI (Universal Resource Identifier) pointing to a media object.

The multimedia gateway may communicate with local devices in the local network according to DLNA/UPnP standards, while the multimedia gateway may be included in a HIGA as specified in TISPAN if the local network is a DLNA network. The external network environment may be any network outside the local network, e. g. the internet.

Further possible features and benefits of the invention will be explained in the detailed description below.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the invention, and to show more clearly how it may be carried into effect, reference will now be made, by way of illustration only, to the following drawings in which:

Figure 1 illustrates schematically a local network with various different local devices and a home gateway for establishing a connection with an external network; Figure 2 is a schematic block diagram illustrating an multimedia gateway unit in a home gateway of a local network;

Figure 3 is a schematic overview illustrating a procedure for supporting media search for a local device from a external network.

Figure 4 a signalling diagram illustrating in more detail how the inventive solution can be implemented in practice.

DETAILED DESCRIPTION

Briefly described, the invention can be used for a device located within a local network to search for media from external parties outside the local network such as devices, servers and terminals on an external network environment.

In order to provide multimedia communication with parties outside the home network, a gateway called 'HIGA' (Home IMS Gateway), has been devised to provide an interface between devices in the local network and an IMS (Internet Protocol Multimedia

Subsystem) network for establishing sessions with external parties. The HIGA is specified in TISPAN (Telecommunication and Internet converged Services and Protocols for Advanced Networking).

UPnP (Universal Plug-and-Play) is an architecture, developed in the multivendor collaboration UPnP Forum, for establishing standardized device protocols for communication in a local network between different devices that may use different access technologies, operating systems, programming languages, format standards and

communication protocols. UPnP also supports the process called 'discovery' in which a device can enter a local network, obtain a local IP address, announce its name and IP address, and exchange capabilities and services with other devices within the network.

DLNA (Digital Living Network Alliance) is a standard that defines acquisition, storing and accessing digital media content from devices in a local network. The UPnP protocol is utilized by DLNA as an underlying protocol for communication between DLNA devices within local networks. In this context, the local network is often called DLNA network. It is required that DLNA devices support HTTP (Hyper Text Transport Protocol) as a basic transport mechanism for transfer of media across the local network. In addition, RTP (Real Time Protocol) can optionally be used as a media transport, but the mandatory requirements for HTTP must always be supported by the device. When a home gateway of a local network receives a search query for a media object from a local device within the local network environment, e.g. a DLNA/UPnP network, the home gateway converts the local search query into an external search query on an external network environment. When a search response, including reference locators to media objects, is received at the home gateway from the external network environment, the search response is converted back to a format compliant with a local network environment. To improve the search, the search response may be adapted to the capabilities of the device in the local network environment having made the search query, or to the capabilities of a device upon which the media object will be rendered. As an illustrative example, the search response, normally presented in the form of a list of hits, may be adapted so that any links to media objects that can not be rendered on an intended rendering device are filtered out from the search response.

The internet is becoming an increasingly popular source for sharing, distributing and accessing multimedia content such as music, movies, and games. On the internet people can easily share their content and also access other's content. Internet users can connect with each other from all over the world, they can communicate and share content, and as such the internet could be referred to as a 'Global Network Environment'. Technologies and standards are also being developed so that devices within limited local networks can communicate and share content. Internal addressing and transport means are being used and examples of 'Local Network Environment' are residential or office networks, LAN (Local Area Networks), or Home Networks. Home Networks may refer to a network where entertainment devices are connectable to each other, in order to communicate and share multimedia content. An 'External Network Environment' will in the following include any network outside of the local network environment, and therefore also includes a Global Network Environment such as the internet. One example of a standardized home network environment is the DLNA/UPnP enabled home network. However, a Home Network can also comprise device other than pure entertainment devices, e.g. telephones, refrigerators, heaters, lights and locks. When domestic appliances are connected in a Home Network the aim is that your home environment becomes easily operable, from within the home or externally using for example the internet.

In Fig. 1 , a local network 100 is shown with different devices, in this example including a wireless telephone, a fixed telephone, a TV apparatus, a laptop computer, a media server. The flow of media in the network 100 may be characterised in terms of "pull" and "push", meaning that content travels either to or from a user, respectively. The so-called Interoperability Guidelines for DLNA define communication schemes for different scenarios of system usage, including the following:

A) 2-Box Pull System Usage. The user operates a Digital Media Player (DMP) for

finding and requesting content from a Digital Media Server (DMS). The media can then be played, or "rendered", locally by the receiving DMP.

B) 2-Box Push System Usage. The user operates a device acting as "Push Controller" for distributing content from that device to a DMP or a Digital Media Renderer (DMR).

C) 3-Box System Usage. The user operates a first device acting as a Digital Media

Controller (DMC) for finding and requesting content from a second device acting as a DMS. The user then selects a third device as a DMR and the content is then sent from DMS to DMR.

In the latter 3-box scheme, the first device is thus used for controlling the transfer of media from the second device to the third device within the local network. For example, a small handheld wireless phone with limited playout capacity may be used as a control unit to direct a laptop computer to stream visual media content to a TV set used as media renderer, in order to view the content on a larger screen and with greater quality as compared to the laptop computer.

However, the schemes above and other available DLNA schemes are limited to rendering media available within the local network. Even though the HIGA can be used by local device users for accessing media available outside the network, the sessions are limited to the usage of an IMS system. Today, there are virtually unlimited amounts of media stored on various devices, servers and terminals which can generally be reached over the Internet. Nevertheless, it is not possible for a device within a local DLNA network to conduct media sessions with external parties without compliance with an IMS system, thereby depriving the local device users of potentially interesting and attractive media.

In Fig. 1 , the network 100 also includes a gateway 102 called HGW (Home Gateway), which is connected to an external access network 104 to provide for media transport outside network 100 for the devices. The local network may further include a HIGA 106 providing a signaling connection to an IMS network 108. The HIGA 106 also has different internal interfaces towards the different devices in network 100, using device- specific protocols. When HIGA 106 receives a request for a multimedia service from a local device 100a in network 100 using a device-specific interface/protocol, HIGA translates the service request into a valid IMS request (typically a SIP invite message), to set up an IMS session on behalf of the local device using an IMS identity 1 12 associated with the device 100a. In a similar manner, HIGA 106 can also set up a media session with the device 200a when receiving a corresponding request from an external device 110 outside the network 100. In either case, the media is transported over the HGW 102 and the access network 104, as indicated by two-way arrows. The home gateway may be devised with a DMS and a so-called Content

Directory Service (CDS) which can receive media search queries and provide information on where in the local network the requested media can be found. Some devices within the home network contain various types of content that may be desirable to access from other devices, such as music, video, still images, and games. The devices within the local network environment, such as DLNA enabled devices within a DLNA network, may communicate with each other in order to share content. However, most of the user's multimedia content may be stored on the DMS. The user must therefore search the DMS for available content, and if found, play it on a DMP/DMR, for example an audio player for music objects, a TV set for video content, and a Digital Picture Frame for still images. The CDS additionally provides a look-up/storage service that allows a DLNA enabled DMP/DMR to search and locate individual multimedia objects. This service can for example be used to enumerate a list of songs stored on an MP3 player, a list of still-images, a list of movies stored in a DVD- Jukebox, a list of TV shows currently being broadcasted (also referred to as electronic program guide, EPG), and a list of songs stored in a CD-Jukebox. Nearly any type of content can be enumerated using the CDS. For devices containing multiple types of multimedia objects (MP3, MPEG, JPEG etc), a single instance of the CDS can be used to enumerate all objects. The DLNA/UPnP search operation is designed to allow a control point to search for objects in the DMS. The control point determines which properties can be used in the search criteria in a search request. It does this using the GetSearchCapabilities action: request : GetSearchCapabilities ( )

response :

GetSearchCapabilities ( ¾dc : title , dc : creator , dc : date, upnp : class , res@siz e" ) The search string for all objects where dc:creator is Sting and sort the result in an ascending order by dc:title is outlined below. The control point can only display 3 items at a time so it restricts the number requested. The following search action is used: request : Search ( "0", "dc: creator = "Sting"", "*", 0, 3, tt+dc: title"

)

response : Search (

"<DIDL-Lite xmlns : dc= "http : / /purl . org/dc/elements/ 1 . 1 / "

xmlns : upnp="urn : schemas-upnp-org : metadata- 1- 0 /upnp/ "

xmlns="urn : schemas-upnp-org : metadata- 1 - O/DIDL-Lite/ " >

<item id= " 9 " parentID= " 4 " restricted= " false" >

<dc:title>A Thousand Years</dc : title>

<dc : creator>Sting</dc : creator>

<upnp : class>obj ect . item. audioItern . musicTrack</upnp : class>

<res protocollnfo= "http-get : * : audio/x-ms-wma : *" size= " 100000 " > http : / /10 . 0 . 0 . 1/getcontent . asp?id=9

</res>

</item>

</DIDL-Lite>", 3, 4, 10 )

Searches for media objects on the internet are performed using a web search engine. A web search engine is a tool designed to search for information on the World Wide Web. The search results, or search response, are usually presented in a list and are commonly called hits. The information in a search response may comprise links to web pages, images, information and other types of files. Some search engines also mine data available in databases or open directories. Unlike Web directories, which are maintained by human editors, search engines operate algorithmically or are a mixture of algorithmic and human input. When a user enters a search query into a search engine (typically by using key words), the engine examines its index and provides a listing of best-matching web pages or other files according to its criteria, usually with a short summary containing the document's title and sometimes parts of the text. Most search engines support the use of the boolean operators AND, OR and NOT to further specify the search query. Some search engines provide an advanced feature called proximity search which allows users to define the distance between keywords. The usefulness of a search engine depends on the relevance of the result set it gives back. While there may be millions of webpages that include a particular word or phrase, some pages may be more relevant, popular, or authoritative than others. Most search engines employ methods to rank the results to provide the "best" results first. How a search engine decides which pages or files are the best matches, and what order the results should be shown in, varies widely from one engine to another. The methods also change over time as Internet usage changes and new techniques evolve. The search response list may also define hit references, such as Universal Resource Locator (URL), Uniform Resource Identifier (URI) or similar network identifier. One can define a URL as a URI that, in addition to identifying a resource, provides a means of acting upon or obtaining a representation of the resource by describing its primary access mechanism or network "location". For example, the URL http://www.ericsson.com/ identifies a resource (in this case Ericsson's home page) and implies that a user can get a representation of that resource (such as the home page's current HTML code, as encoded characters) via HTTP from a network host named www.ericsson.com. When searching for a media object the search reponse list may include a URL pointing to the network location from which the media object can be downloaded. In a local network environment the local device can then display a suitable acknowledging message to the user and, in response to the user input command such as pressing a play button or clicking the URL link, request the media object from the home gateway referring to the received local media reference. The home gateway will then transfer the media object from the file or the storage unit to the local device.

Figure 2 illustrates an exemplary Multimedia Gateway Unit (MGU) 200, which may be part of an HGW 102 or similar, according to a possible embodiment. The MGU comprises an External Network module 201, which is configured to provide access to an External Network Environment 202, e.g. the internet. The MGU 200 further comprises a Local Network Module 203 configured to provide communication interfaces with devices in the local network environment 204. The MGU 200 also comprises a storage unit 205 where multimedia files, such as music, games, pictures and movies can be stored. However, the storage unit 205 may be located outside the MGU 200 such that the multimedia files therein can be accessed from the MGU 200. In the case of a DLNA/UPnP network, the storage unit 205 is typically included in a DMS. Any devices connected within the local network environment 204 can be used to search and access files stored in the storage unit 205 of the MGU 200, cf. DMS/CDS for a DNLA network environment. The MGU 200 further comprises a search transformation unit 206 configured to transform or adapt a search query, received from a device (not shown) in the local network environment 204, to be applicable and adapted to be a search query on the external network environment 202. The search query made by the device may be "device-specific", implying that the device uses a

communication protocol or messaging language that is specific for that device within the local network environment 204 and which cannot be used outside local network environment 204. In the case of a DLNA network, the search request received from the device may be a standard DLNA content search request to the CDS in the MGU 200. The CDS in MGU 200 may then first check whether the requested media object is available within the local network environment 204 according to regular procedures, which is however outside the scope of this solution which is used when the requested media is not available in the local network environment 204. The search transformation unit 206 then adapts the received search query so that it becomes compatible and useful as a search query on the external network environment 202, using for example a web search engine, or as a search query for media object on a dedicated media object distribution site.

According to a furthe exemplary embodiement, the MGU 200 also includes a search response adaptor unit 207 and the local network environment 204 may provide suitable means for making information about the capabilities of the connected device readily available. This is the case for, e.g., DLNA/UPnP enabled devices. UPnP generally supports the process where devices exchange capabilities and services with other devices within the network. Since most searches on the internet today are being performed using a PC, laptop or other computer type of device, which typically offers a wide range of rendering capabilities and is equipped with all sorts of media playing functions, there is not an apparent need to filter, order or adapt a search response for a multimedia file. However, many devices in a local network environment only have limited or dedicated rendering and playback

capabilities. On the other hand, a digital photo frame is configured to display photos from a family album or other pictures. Therefore, when performing a search on the internet for, e.g., 'Batman' for display on the digital photo frame, it is advantageous to rank, highlight or prioritize search results, or hits, that locate 'Batman' related pictures that can be displayed on the digital photo frame. Likewise when performing a search query using 'Batman' as a keyword for play out on a movie playing unit, then the search response list should prioritize search results that locate the movie 'Batman'. Information about device capabilities such as rendering and playback capabilities is typically extractable from for example DLNA/UPnP enabled devices, and therefore the search response can be adapted to the device capabilities. The adaptation process can include filtering out references to files that are not compatible with the device that the search is aimed for. The adaptation can also include highlighting multimedia files that can be rendered on the device so that they become easily visible in the search response. In that case, the search results may place the multimedia files that can be rendered on the device on top of the search result list. This could thus provide a relevance ranking, where the hits in the search response are presented in descending order based on their matching toward the capabilities of the device. When receiving a search response from a search on the internet, the search response adaptor unit 207 may thus adapt the search response to the capabilities of the device that the search is intended for.

According to another exemplary embodiment, the MGU 200 also includes a locator extraction unit 208 configured to extract media object locators from an adapted search response. When a search response is received from an external network environment, which the search response adaptor unit 207 may change into an adapted search response, the locator extraction unit 208 extracts media object locators as source locators from the search response. The source locator may be the URL, URI or similar that specifies where an identified resource is available and the mechanism for retrieving it. The URL can for example be the Web address where a particular multimedia can be downloaded from. The URL is then forward to a device in the local network environment where it is presented to the user. The user may then chose to request the media object by pressing a play button or clicking the URL link, to request the media object from the home gateway referring to the received local media reference. The home gateway will then transfer the media object from the file or from the storage unit 205 to the local device.

Figure 3 schematically illustrates a procedure according to an embodiement of the invention, performed by a multimedia gateway unit MGU 200 of a local network, for supporting a media search upon a search query from a device in the local network, by transforming that search query into an external search request for media objects on a external network environment. The device may be a DNLA enabled device, although this solution is not limited to search queries from such devices. A first step 301 illustrates that the search query is received for a media object which was entered in the user interface (UI) of a device connectable to the local network, e.g. a digitial picture frame. The media object may be an audio file, a video file, picture file, or game file. For example, the DLNA/UPnP standardized protocol also provides information related to the capabilities of the DNLA enabled device and therefore such information may also be included in the search query. The search query may be received by the MGU 200 shown in Fig. 2. A search for the media object on the storage unit may then be performed to see if any stored content matches the search query. If the query also includes information about the capabilities of device, a match between any possible search hits and the device capabilities is performed. If a media object stored in the storage unit matches the search query, then a media object locator such as a URL may be forwarded in a search response to the querying device upon which the media object can be rendered, or alternatively the media object may be transferred directly from the storage unit to another device upon which the media object will be rendered. In case of the 2-Box Pull System Usage, the device from which the search query originates is the same as the device that will 'playback' the media object. In case of the 2-Box Push System Usage or the 3 -Box System Usage, the device upon which the media will be rendered is different from the device from which the search query originated. If there is no media object on the storage unit that matches the search query, then the seach transformation unit adapts the search query to a format, communication protocol or messaging language that makes the search query valid on a external network environment, as shown in a step 302. The search transformation unit may convert or adapt the search query to a format that is adapted to constitute a search for the media object that is valid on a external network environment such as the internet, as shown in a further step 303. The search query may be directed toward a dedicated site that provides media objects, and in the case of video/movies such a dedicated site may be SF Anytime, Netflix or other movie sites. In response to the external search query created in step 302, a search response is obtained. The search response may comprise a list of hits, possible search matches and may include URLs, Web addresses, or other pointers to media objects. Once the search response has been obtained, it may be adapted to the capabilities of the device upon which the media object is intended to be rendered, which may be different from the device requesting the search query, as shown in a further step 304. Finally, in a step 305, the adapted search response is sent to a device upon which the media will be rendered, which may be the one from which the search query originated or a different device as described above.

The above procedure of Fig. 3 can be carried out in different ways, e.g.

according to the following examples. The adaptation in step 304 may include ranking or prioritizing the hits in the search response list such that search hits that best matches the capabilites of the DMR/DMP is placed on top of the search response list. The adaption may also include filtering the search response list such that only search hits that are compatible with the DMR/DMP are present in the search response list. The information of the capabilities of the device may be included in the search query of steps 302, 303 on the external network environment together with a keyword describing the searched media object. The method may also be performed such that the search on the external network is performed without taking into account the information about the device capabilites. The adaption of the search response in step 304 is performed after the search response from the external network environment is received at the MGU. The search response may be stored in the storage unit and the MGU may then request information about the device capabilities from the device or, as a further embodiment, when the search query is received from the device the information about the capabilities of devices may be stored in the storage unit of the MGU, so that it can be utilized whenever search responses are received.

A detailed example of how a search response for media objects from a external network environment is provided to a device unit in a local network environment will now be described with reference to the signalling diagram in Fig. 4. In this figure, the 2-Box Pull System Usage will be used as an illustrative example. The device unit may represent a DMP/DMR in a DLNA network that performs a local search query for a media object on a local content server, such as a CDS/DMS in a home gateway, in particular, or a storage unit included in a MGU, in general. In more detail, the MGU includes a storage unit for storing content and it may also store information about the device capabilities. In a first step 4: 1 , the device unit sends a local search query for a media object. A CDS type module searches the storage unit for content. The search may include matching the content to the playback or rendering capabilities of the device and the keyword. In this step, the information about the device capabilities may also be stored in the storage unit, so that it later can be retrieved and used by the search adaptor unit to adapt the search response list. In a next step 4:2, the search transformation unit adapts the local search query to a format adapted to be used in an external search query. The external search query may include both a keyword referencing a searched media object and the information about the device capabilities. In a further step 4:3, an external search for a media object is performed using for example a web search engine such as Google, Yahoo, Netscape or other similar search engine. Step 4:3 may also comprise searching for a media object on the dedicated media distribution site. In a next step 4:4, a search response is obtained in response to the search query. The search response may be a list of hits including reference locators, e.g. URLs. In this step, the search response is received by the search response adaptor unit, which adapts the search response to capabilites of the device, upon which the media object will be rendered. The search response adaptor unit may retrieve information about the capabilities of the device from the storage unit or otherwise request it from the device which the media object is intended for. However, it may not be necessary for the search response adaptor unit to adapt the search response if the information about the capabilities of the device was included in the search query on the external network environment. In that case, the search query on the external network environment included the device capabilities, and, hence, the search response is adapted to the capabilities of the device. It is also desirable to configure the adapted search response to a format standard and communication protocols compliant with the local network environment. This is performed in step 4:5 at the search transformation unit. Before sending the the adapted search reponse to the device in the local network environment, the locator extraction unit may extract one or more media object locator from the search reponse in step 4:6 and send the media object locator(s) to the device. However, the adapted search reponse may also be forwarded directly to the device as is.

It should be noted that the above-mentioned embodiments are used here to illustrate rather than limit the invention, and that those skilled in the art are free to use alternative embodiments without departing from the scope of the appended claims. The word "comprising" does not exclude the presence of elements or steps other than those listed in a claim, "a" or "an" does not exclude a plurality, and a single processor or other unit may fulfill the functions of several units recited in the claims. Any reference signs in the claims shall not be construed so as to limit their scope.

Claims

CLAIMS:
1. A method, in a multimedia gateway unit connected to a local network environment and to an external network environment, of supporting a media search, the method comprising the steps of:
- receiving a local search query from a device unit connected to the local network environment, the search query comprising at least a request for a media object;
transforming the received local search query into an external search query adapted to the external network environment;
sending the external search query to a search engine operating in the external network environment;
receiving a search response from the search engine; and
sending a local search response to said device unit;
wherein said local search response is adapted to the capabilities of the device unit.
2. A method as claimed in claim 1, wherein the local search query further comprises information related to the device unit capabilities.
3. A method as claimed in claim 1 , further comprising the steps of:
the multimedia gateway unit obtaining information related to the device unit capabilities from the device unit or from a storage unit storing capability information of the device units in the local network; and
the multimedia gateway unit adapting the received search response using the obtained information.
4. A method as claimed in any of claims 1-3, further comprising the steps of:
transforming the adapted search response from the external network environment into a response format used within the local network environment; transmitting the adapted search response from the multimedia gateway unit to the device unit connected to the local network in response to a local search query generated by said device unit.
5. A method as claimed in any of claims 1-3, further comprising the steps of:
extracting one or more external media object locators from the adapted search response;
wherein the media object locators are transmitted to the device unit connected to the local network environment in response to the local search query.
6. A method as claimed in any of claims 1-4, comprising the steps of:
receiving a local search query from a first device unit connected to the local network environment, the search query comprising at least a request for a media object;
sending an adapted search response to a second device unit connected to the local network in response to a search query from said first device unit;
wherein said information related to the device unit capabilities comprise information related to the capabilities of the second device unit.
7. A method as claimed in claim 6 wherein the multimedia gateway unit obtains information related to the device unit capabilities from the second device unit or from a storage unit storing capability information of the device units in the local network;
8. A method as claimed in any claims 5-6, wherein the media object locators are transmitted to the second device unit connected to the local network environment in response to the local search query from the first device .
9. A method as claimed in any of the preceding claims, wherein the information related to the device unit capabilities comprises information related to the rendering capabilities of the device unit.
10. A method as claimed in any of the preceding claims, wherein the information related to the device unit capabilities comprises information about the compatibility of media formats with the device unit.
11. A method as claimed in any of the preceding claims, wherein the search response is adapted by omitting references to media objects having formats incompatible with the device unit capabilities.
12. A multimedia gateway unit connectable to a local network environment and to a external network environment, the multimedia gateway comprising:
a local network environment module configured to receive a local search query from a device unit connectable to the local network environment, said local search query comprising at least a request for a media object;
- a search transformation unit configured to transform a local search query to a format adapted to a external search query on a external network environment;
a external network environment module configured to send a search request for a media object to a search engine, said search engine being configured to generate a search response in response to the search;
- a search response adaptor unit configured to adapt the response from a search for media objects on the external network environment, the adaptation being performed using information about the capabilities of the device unit.
13. A multimedia gateway unit as claimed in claim 12, wherein the search transformation unit is further configured to transform an adapted search response from a external search query to a format adapted to device units connectable to the local network environment.
14. A multimedia gateway as claimed in claim 13, wherein the local network module is configured to send an adapted search response to a device unit connectable to the local network in response to a local search query generated by said device unit.
15. A multimedia gateway unit as claimed in claim 12 or 13, further comprising:
a locator extraction unit configured to extract media object locators from the adapted search response;
wherein the local network module is further configured to send media object locators to a device unit connectable to the local network environment.
16. A multimedia gateway unit as claimed in any of claims 12-15, wherein the local search query further comprise information related to the capabilities of the device unit;
17. A multimedia gateway unit as claimed in claims 12-15, wherein the search response adaptor unit is configured to request information related to the device unit capabilities from the device unit and adapt the search response using the requested information;
18. A multimedia gateway unit as claimed in any of claims 12-17, comprising a storage unit configured to store the adapted search response.
19. A multimedia gateway unit as claimed in any of claims 12-18, wherein the storage unit is further configured to store information related to the device unit capabilities.
20. A multimedia gateway unit as claimed in claims 12-19, wherein the storage unit is further configured to store a media objects.
PCT/EP2009/062039 2009-09-17 2009-09-17 Method and apparatus for supporting a media search WO2011032589A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/062039 WO2011032589A1 (en) 2009-09-17 2009-09-17 Method and apparatus for supporting a media search

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/062039 WO2011032589A1 (en) 2009-09-17 2009-09-17 Method and apparatus for supporting a media search

Publications (1)

Publication Number Publication Date
WO2011032589A1 true true WO2011032589A1 (en) 2011-03-24

Family

ID=42026397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/062039 WO2011032589A1 (en) 2009-09-17 2009-09-17 Method and apparatus for supporting a media search

Country Status (1)

Country Link
WO (1) WO2011032589A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050138137A1 (en) * 2003-12-19 2005-06-23 Microsoft Corporation Using parameterized URLs for retrieving resource content items
US20060133391A1 (en) * 2004-12-22 2006-06-22 Electronics And Telecommunications Research Institute Multimedia service apparatus and method for multimedia service providers outside home to UPnP devices inside home using home gateway and service gateway platform
KR100645171B1 (en) * 2005-05-16 2006-11-03 주식회사 대우일렉트로닉스 A system and method for servicing home network media using a classical upnp
US20070063012A1 (en) * 2005-09-19 2007-03-22 Silverbrook Research Pty Ltd Method of performing an action in relation to a software object
WO2007118424A1 (en) * 2006-04-13 2007-10-25 Zhang, Sheng Web search on mobile devices
EP1916823A1 (en) * 2006-07-13 2008-04-30 Samsung Electronics Co., Ltd. Content management method and apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050138137A1 (en) * 2003-12-19 2005-06-23 Microsoft Corporation Using parameterized URLs for retrieving resource content items
US20060133391A1 (en) * 2004-12-22 2006-06-22 Electronics And Telecommunications Research Institute Multimedia service apparatus and method for multimedia service providers outside home to UPnP devices inside home using home gateway and service gateway platform
KR100645171B1 (en) * 2005-05-16 2006-11-03 주식회사 대우일렉트로닉스 A system and method for servicing home network media using a classical upnp
US20070063012A1 (en) * 2005-09-19 2007-03-22 Silverbrook Research Pty Ltd Method of performing an action in relation to a software object
WO2007118424A1 (en) * 2006-04-13 2007-10-25 Zhang, Sheng Web search on mobile devices
EP1916823A1 (en) * 2006-07-13 2008-04-30 Samsung Electronics Co., Ltd. Content management method and apparatus

Similar Documents

Publication Publication Date Title
US20090037382A1 (en) System and Method to Manage and Distribute Media Using a Predictive Media Cache
US20070288470A1 (en) Selection of media for public rendering via user devices
US7519680B1 (en) Method for using scheduled hyperlinks to record multimedia content
US20030191802A1 (en) Reshaped UDDI for intranet use
US20070005727A1 (en) Systems, methods, and media for discovering remote user interface applications over a network
US8209397B2 (en) Method and apparatus for managing bookmark information for content stored in a networked media server
US7680804B2 (en) System and method for navigating and indexing content
US20050210119A1 (en) Networked local media cache engine
US20060212531A1 (en) Content providing server, information processing device and method, and computer program
US20060168000A1 (en) Method of sharing files between user stations in a network
US20060195545A1 (en) Information processing apparatus and content information processing method
US20080027953A1 (en) Information processing device, information processing method, and computer program
US20080208839A1 (en) Method and system for providing information using a supplementary device
US20090106202A1 (en) System And Method For Enabling Search Of Content
US20060242664A1 (en) Content providing server, information processing device and method, and computer program
US20060265427A1 (en) Multi-media search, discovery, submission and distribution control infrastructure
US20060089981A1 (en) Supporting device information of a combo device in a universal plug and play network
US7584290B2 (en) Session mobility using digital items
US20050135341A1 (en) Apparatus and method for coordinately managing media content
US20090150570A1 (en) Sharing Assets Between UPnP Networks
US20090150481A1 (en) Organizing And Publishing Assets In UPnP Networks
US20070271310A1 (en) Method and apparatus for synchronizing device providing content directory service with device not providing content directory service
US20030046703A1 (en) Systems and methods for facilitating user access to content stored on private networks
US20040177063A1 (en) Simplified searching for media services using a control device
US20030120758A1 (en) XML conditioning for new devices attached to the network

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09741255

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct app. not ent. europ. phase

Ref document number: 09741255

Country of ref document: EP

Kind code of ref document: A1