Method and apparatus for submitting user content in DCD service

Abstract

Disclosed is a method for updating or sharing content by a terminal, including generating a request for updating or sharing content, transmitting the request to a server, wherein the server transmits a notification that the content is shared to the at least one terminal if a first element in an information element of the request indicates that the content is the public content, and receiving, from the server, updated content or an indication for displaying the content if the content is updated or is to be displayed on the terminal based on the condition.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a method and apparatus for delivering content in a Dynamic Content Delivery (DCD) service. More particularly, the present invention relates to a method and apparatus for submitting user-created content to share with other users.

2. Description of the Related Art

Due to the development of communication technologies, mobile communication, which focused on voice calls at its initial stage, is now introducing to the market messaging services such as Short Message Service (SMS) and Multimedia Messaging Service (MMS), and various supplementary services such as Internet access service and video call service, and is also considering the introduction of personalized content delivery services taking into account the fact that a majority of mobile communication devices are carried by individuals.

Considering such market characteristics, Open Mobile Alliance (OMA), which has established many application layer standards for portable terminals, is conducting research on a Dynamic Content Delivery (DCD) technology in the OMA Content Delivery (CA) Working Group, it's the OMA affiliated organization. DCD is a technology capable of providing services that deliver user-desired contents on a personalized basis in line with the situations that practical application of Internet services on mobile terminals is not made because of the market demands stated above, the inconvenient searches, the limited input means, and the low service speeds, and with the growing user demands for personalized services.

Problems of the prior art and solutions for addressing the same will be described clearly below based on an OMA CD technology, which is one of the content provision standards. However, this is a mere example used to give better understanding of the invention, and the present invention is not limited to the OMA CD technology and can be applied to various other content provision technologies.

FIG. 1 illustrates the architecture and interface configuration of a DCD service system to which the present invention is applicable.

Referring to FIG. 1, the DCD system includes a DCD client 120 and a DCD server 110. The DCD client 120 is located in a mobile terminal and used by the mobile terminal to access the DCD server 110. The DCD client 120 includes modules that perform their associated three logical functions: a Subscription and Administration function, a Content Delivery and Storage Management function, and a Client Application Interaction function. The Subscription and Administration function module 121 is responsible for exchanging service administration information with the DCD server 110, and the Content Delivery and Storage Management function module 123 is responsible for managing content received from the DCD server 110. The Client Application Interaction function module 125 supports functions for accessing the DCD service from a DCD Enabled Client Application 20 using its DCD client 120.

The DCD server 110 offers a network function based on DCD service-related applications. The DCD server 110 includes modules that perform their associated two logical functions: a Subscription and Administration function and a Distribution and Adaptation function. The Subscription and Administration function module 111 is responsible for exchanging service administration information with the DCD client 120, and the Distribution and Adaptation function module 113 provides DCD content and a DCD content notification to the DCD client 120. Table 1 below defines interfaces used between the components (logical entities) in FIG. 1.

TABLE 1
Interfaces Definition
DCD-1      Bi-directional point-to-point interface between the DCD Server and the DCD Client. This interface is
           used by the DCD Client to send content requests to the DCD Server, and to receive responses.
DCD-2      Uni-directional interface between the DCD Server and the DCD Client. This interface is used by the
           DCD Server to push notifications and/or content to the DCD Client. The DCD-2 interface could
           manifest itself as point-to-point push interface or point-to-multipoint broadcast interface.
DCD-3      Bi-directional point-to-point interface between the DCD Server and the DCD Client. This interface is
           used by the DCD Server and the DCD Client to exchange service administration and configuration
           information.
DCD-CPR    Uni-directional interface between the DCD Content Provider and the DCD Server. This interface is
           used by the Content Provider to register new content channels with the DCD Server.
DCD-       Bi-directional interface between the DCD Content Provider and the DCD Server. This interface is
CPDE       used by the Content Provider to publish content at the DCD Server and by the DCD Server to
           retrieve content from the Content Provider. The interface could also be used for exchange of
           administration information, if applicable. While the interface is bi-directional, only the DCD
           Server provided interface functions are a subject for standardization.
DCD-CAR    Uni-directional interface between the DCD-Enabled Client Application and the DCD Client. This
           interface is used by the DCD-Enabled Client Application to register with the DCD Client when the
           application is installed on a handset.
DCD-       Bi-directional interface between the DCD-Enabled Client Application and the DCD Client. This
CADE       interface is used by the DCD Client to send notifications and/or content to the DCD-Enabled Client
           Application and by the DCD-Enabled Client Application to retrieve content from the DCD Client.
           The interface could also be used for exchange of administration information, if applicable. While the
           interface is bi-directional, only the DCD Client provided interface functions are a subject for
           standardization.

In the DCD system, content metadata (Metadata, Content Format) is defined to deliver content. The term “content metadata” refers to dynamic settings and rules, or content information, for controlling DCD content delivery. Table 2 below gives definitions of elements and attributes in the content metadata.

TABLE 2
							Provided to
							DECA (DCD
							Enabled
						Originated	Client
Name	Type	Cardinality	Description	Data Type	Used by	from	Application)
content-	E	1	Contains the	Structure	DS (DCD	CP (Content	YES
metadata			following		Server),	Provider)
			attributes:		DC (DCD
			content-updated		Client)
			content-id
			channel-id
			mime-type
			content-length
			content-types
			content-name
			replaces-content-
			id
			content-price
			content-delivery-
			notification
			delivery-priority
			content-encoding
			content-address
			content-storage-
			location
			content-block-id
			parental-rating
			deliver-to
			deliver-at
			content-
			expiration
			delivery-spread
			deliver-when-
			roaming
			network-selection
			aux-content-link
			Contains the
			following sub-
			elements
			deliver-per-
			location
			deliver-per-
			presence
			deliver-per-xdms
content-	A	0 . . . 1	Time when the	String	DC	CP, DS	YES
updated			content item was
			last updated.
			SHALL conform
			to the “date-time”
			definition in
			[RFC3339]. In
			addition, an
			uppercase “T”
			character SHALL
			be used to
			separate date and
			time, and an
			uppercase “Z”
			character SHALL
			be present in the
			absence of a
			numeric time
			zone offset.
content-id	A	1	Identifier set by	String	DS, DC	CP	YES
			the Content
			Provider, and
			unique within the
			DCD Service
			Provider's
			domain. The
			main purpose of
			the content ID is
			to enable
			application level
			confirmation and
			resumption of
			content delivery.
			Implementation
			in XML schema
			will use the
			“AnyURI” data
			type.
channel-id	A	0 . . . 1	A list of Channel	List of	DS, DC	CP	YES
			IDs as assigned	Strings
			by the DCD
			Server. The
			Content Provider
			includes this
			attribute to
			associate content
			items with DCD
			channels
mime-type	A	1	The MIME type	String	DS, DC	CP	YES
			of the content
			item.
content-	A	1	The size in bytes	String	DS, DC	CP, DS	YES
length			of the content
			item.
content-	A	0 . . . 1	A list of strings	List of		CP	YES
types			that describe the	Strings
			channel content
			to enable
			association or
			filtering e.g. by
			“type”,
			“category”, “tag”,
			or “relation”
content-	A	0 . . . 1	Name of content	String		CP	YES
name			in a human
			readable format.
replaces-	A	0 . . . 1	Content ID of an	String	DS, DC	CP	YES
content-id			outdated content
			item that, if
			present in the
			storage of the
			DCD Server or
			DCD Client,
			should be
			replaced with this
			content item.
			Implementation
			in XML schema
			will use the
			“AnyURI” data
			type.
content-	A	0 . . . 1	Indicates the	String	DC	CP, DS	YES
price			price (amount and
			currency) of this
			content item. The
			purpose is to let
			the user know the
			price of the
			content and
			decide if he wants
			to retrieve it
content-	A	0 . . . 1	Indicates the need	Boolean	DS, DC	CP, DS	NO
delivery-			for, or status of,
notification			delivery
			acknowledgement
			for this content
			item.
			This attribute
			should be set to
			“true” if user is
			charged for
			delivery of this
			content item
			(subject to DCD
			Service Provider
			Policy)
			Values:
			0—False (*)
			1—True
delivery-	A	0 . . . 1	The delivery	Enumerated	DS, DC	CP, DS	NO
priority			priority
			associated with
			this content item.
			Values:
			1—Low
			2—Medium (*)
			3—High
			4—Emergency
content-	A	0 . . . 1	Encoding that has	String	DC	DS	NO
encoding			been applied to
			the content item,
			e.g. GZIP or
			deflate
			compression.
content-	A	0 . . . 1	An address	String	DC	DS	YES
address			(URL) where the
			content item can
			be directly
			retrieved by the
			DCD Client via
			the DCD-1
			interface.
content-	A	0 . . . 1	Location of the	String	DC	DC	YES
storage-			content item in
location			the DCD Client
			managed storage
content-	A	1	Identifies which	String	DS	CP	YES
block-id			multiple content
			items can be
			associated as a
			block. May be
			used by the DCD
			Server for content
			aggregation/
			bundling.
parental-	A	0 . . . 1	Content rating	String	DS, DC	CP	YES
rating			per FCC “TV
			Parental
			Guidelines” or
			similar local
			regulatory
			requirements.
			May be used by
			the DCD Server
			for content
			selection/
			filtering, and by
			DCD Client for
			the same in the
			broadcast case.
deliver-to	A	0 . . . 1	A particular set of	String	DS	CP	NO
			users to receive
			the content.
deliver-at	A	0 . . . 1	Time at which the	String	DS	CP	NO
			DCD Server
			should deliver a
			content item.
content-	A	0 . . . 1	The expected	String	DS, DC	CP	YES
expiration			lifetime of the
			content item in
			device storage,
			and the time until
			which the content
			item can be
			directly retrieved
			(if a content
			address attribute
			was provided).
delivery-	A	0 . . . 1	The period over	String	DS	CP	NO
spread			which the DCD
			Server can
			randomize
			delivery, for the
			purpose of load
			spreading.
deliver-	A	0 . . . 1	Indicates whether	Boolean	DS	CP	NO
when-			the content item
roaming			should be
			automatically
			delivered or
			retrieved via
			point-to-point
			interfaces if the
			user is roaming
			Values:
			0—False (*)
			1—True
network-	A	0 . . . 1	Descending	String	CP, DS,	DS	NO
selection			priority-ordered,
			comma-separated
			list of
			network/bearer
			types for use in
			content delivery,
			selected per
			arbitrary
			deployment-
			specific criteria
			for network
			selection (e.g.
			GPRS vs. UMTS
			vs. Wi-Fi) based
			on delivery cost,
			bandwidth,
			quality of service,
			etc. DCD Client
			and DCD Server
			apply these
			criteria for
			content delivery
			over DCD-1 and
			DCD-2
			interfaces. One or
			more of
			“UMTS”,
			“WiMAX”,
			“LTE”, “802.11”,
			“CBS”,
			“BCAST”.
aux-	A	0 . . . 1	Provides the	String	DS, DC	CP, DS	NO
content-			Content ID or
link			link to additional
			content that is
			related to the
			content being
			delivered. The
			intent is to
			support pre-
			fetching content
			referred to by the
			main content item
			or likely to be
			requested later.
deliver-	E1	0 . . . 1	A rule for	String	DS	CP	NO
per-			matching a
location			location at which
			delivery should
			be allowed. The
			rule should be
			specified by the
			DCD Content
			Provider, the
			DCD Server, or
			the DCD Enabled
			Client
			Application based
			on the format
			published by the
			Service Provider
deliver-	E1	0 . . . 1	A rule for	String	DS	CP	NO
per-			allowing delivery
presence			based upon
			matching a
			Presence attribute
deliver-	E1	0 . . . 1	A rule for	String	DS	CP	NO
per-xdms			allowing delivery
			based upon
			matching a
			XDMS attribute.

In the prior art, the content metadata for content delivery is generally used only when content is created by the DCD server or content provider and delivered from the DCD server to the DCD client.

The DCD client can also deliver (submit) content to the DCD server according to the prior art. However, in the prior art, when the DCD client submits content, the DCD client delivers the content in the form of an opaque content package that the DCD system cannot interpret, without delivering the content metadata. Thus, the DCD server can not comprehend the content information, making it inefficient to post or share the content, and error is apt to occur.

SUMMARY OF THE INVENTION

The present invention is designed to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present invention provides an apparatus and method for submitting user-created content to share with other users.

Another aspect of the present invention provides a method and system in which a user creates content according to a predetermined rule and submits the content with information such as a submit address, a data or media type, a label (or tag), etc., of the content, so that a DCD service provider can easily handle the content after receiving it.

According to one aspect of the present invention, there is provided a method for updating or sharing content by a terminal, including generating a request for updating or sharing content, wherein the request comprises at least one of a content identifier for the content and the content, and an information element including a first element indicating whether the content is a public content for sharing with at least one terminal and a second element indicating a condition for updating the content or displaying the content on the terminal, transmitting the request to a server, wherein the server transmits a notification that the content is shared to the at least one terminal if the first element indicates that the content is the public content, and receiving, from the server, updated content or an indication for displaying the content if the content is updated or is to be displayed on the terminal based on the condition.

According to another aspect of the present invention, there is provided a terminal for updating or sharing content, including a processor for generating a request for updating or sharing content, wherein the request comprises at least one of a content identifier for content and the content, and an information element including a first element indicating whether the content is a public content for sharing with at least one terminal and a second element indicating a condition for updating the content or displaying the content on the terminal, and a transceiver for transmitting the request to a server, wherein the server transmits a notification that the content is shared to the at least one terminal if the first element indicates that the content is the public content, and receiving, from the server, updated content or an indication for transmitting the content if the content is updated or is to be displayed on the terminal based on the condition.

According to another aspect of the present invention, there is provided a method for updating or sharing content by a server, including receiving, from a terminal, a request for updating or sharing content, wherein the request comprises at least one of a content identifier for the content and the content, and an information element including a first element indicating whether the content is a public content for sharing with at least one terminal and a second element indicating a condition for updating the content or displaying the content on the terminal, transmitting a notification that the content is shared to the at least one terminal if the first element indicates that the content is the public content, and transmitting updated content or an indication for displaying the content if the content is updated or is to be displayed to the terminal based on the condition.

According to another aspect of the present invention, there is provided a server for updating or sharing content, including a transceiver for receiving, from a terminal, a request for updating or sharing content, wherein the request comprises at least one of a content identifier for the content and the content, and an information element including a first element indicating whether the content is a public content for sharing with at least one terminal and a second element indicating a condition for updating the content or displaying the content to the terminal, and a processor for controlling the transceiver to transmit a notification that the content is shared to the at least one terminal if the first element indicates that the content is the public content, and to transmit updated content or an indication for displaying the content if the content is updated or is to be displayed on the terminal based on the condition.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

FIG. 1 illustrates architecture and interface configuration of a DCD service system to which the present invention is applicable;

FIG. 2 illustrates a process in which a user submits DCD content to a DCD server and receives DCD content associated with the submitted DCD content according to an embodiment of the present invention; and

FIG. 3 illustrates a process in which a user submits DCD content to a DCD server according to an embodiment of the present invention.

Throughout the drawings, the same drawing reference numerals will be understood to refer to the same elements, features and structures.

DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

The matters defined in the description such as a detailed construction and elements are provided to assist in a comprehensive understanding of embodiments of the invention. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

Various embodiments of the present invention will be described below. Although the names of entities defined in the 3^rd Generation Partnership Project (3GPP), which is the asynchronous mobile communication standard, or in the DCD of the Open Mobile Alliance (OMA), which is a standard organization for applications of mobile terminals, will be used for a description of the present invention for convenience purposes only, it is not intended to limit the scope of the invention, and the present invention can be applied to any similar systems.

The content submission according to the present invention can also be used for various other purposes in addition to its main purpose of directly submitting certain content created by a user to share it with other users. For example, according to the content submission, the user may submit content for submitting a keyword and/or a format needed to search for specific content, and may also submit content with a user preference to receive personalized services. Besides, the user may submit content for his subscription to a DCD content provider server. The user may also submit the content provided from an arbitrary service provider, e.g., newspaper articles.

The purposes of the content submission by the user can be divided into a purpose of submitting content to receive other content associated with the submitted content, and other purposes, for example, for simply submitting content to a specific site or channel.

An example of the former case where the user submits content to receive specific content will be described with reference to FIG. 2, while an example of the latter case where the user simply submits content will be described with reference to FIG. 3.

In an embodiment of the present invention, a DCD Enabled Client Application 20 and a DCD client 120 are included in a mobile terminal. A DCD server 110 includes a transceiver (not shown) for performing communication by exchanging messages with the DCD client 120, a content provider (or DCD content provider server) 10, and a personalization source (or personalization information provider) 30, and a processor (not shown) for controlling the message exchange and handling the exchanged messages. In the following description, the processor performs operations associated with various message handling processes of the DCD server 110. The DCD Enabled Client Application 20, the DCD client 120, the DCD server 110, the content provider 10, and the personalization source 30 perform not only the conventional functions and operations, but also the functions and operations of the invention described below.

Referring to FIG. 2, a user creates content to be submitted, using the DCD Enabled Client Application 20, and then requests content submission by sending in step 201 a ContentSubmit Request message to the DCD client 120. The user can compose the content to be submitted, according to a predetermined format. In step 203, the DCD client 120 properly adjusts information elements in the ContentSubmit Request message and sends in step 203 the resulting message to the DCD server 110.

The information elements included in the ContentSubmit Request message sent in step 201 are as shown in Table 3 below, and the information elements additionally included in the ContentSubmit Request message sent in step 203 are as shown in Table 4 below.

TABLE 3
Information
Element	Req	Type	Description
Application-ID	Mandatory	String	Application identifier of
			the DCD-Enabled Client
			Application to which this
			message is related.
Channel-ID	Mandatory	String	ID of channel related to
			the submitted content.
Submit-Metadata	Mandatory	Structure	DCD Submit Metadata as
			provided by the DCD
			enabler.
Submit-Content	Mandatory	Opaque Data	Content to be submitted.

TABLE 4
Information
Element	Req	Type	Description
Session-ID	Mandatory	String	Session identifier. The Session-ID is unique within the
			service provider domain. If there is an established Session, a
			Session-ID SHALL be present.
Message-ID	Mandatory	String	Identifies this message. The Message-ID is unique within a
			current session. Message identifier consists of the
			transaction identifier suffixed by two numeric characters for
			message index within the transaction. Transaction identifier
			offset is unique within the current session and identical for
			all messages within the transaction.
Channel-ID	Mandatory	String	ID of channel related to the submitted content.
Submit-	Mandatory	list of data	One or more submit packages. The submit package consists
Package		structures	of content payload and submit metadata. If Channel-ID
			element is present in the message all items in Submit-
			Package element belong to the same channel (identified by
			Channel-ID element).

In accordance with the present invention, the user's DCD Enabled Client Application 20 and DCD client 120 include Submit-Metadata, Submit-Content, Submit-Package, etc. in the ContentSubmit Request message for content submission in order to include therein information related to the content to be submitted.

As is defined in Table 4, the Submit-Package includes Submit-Metadata and Submit-Content, and the Submit-Metadata may include the information given in Table 5 below according to the present invention.

TABLE 5
							Provided
				Data	Used	Originated	to
Name	Type	Cardinality	Description	Type	by	from	DECA
content-	E	1	Contains the following	Structure	DS,	CP	YES
metadata			attributes:		DC
			content-updated
			content-id
			channel-id
			mime-type
			content-length
			content-types
			content-name
			replaces-content-id
			content-price
			content-delivery-
			notification
			delivery-priority
			content-encoding
			content-address
			content-storage-location
			content-block-id
			parental-rating
			deliver-to
			deliver-at
			content-expiration
			delivery-spread
			deliver-when-roaming
			network-selection
			aux-content-link
			Contains the following
			sub-elements
			deliver-per-location
			deliver-per-presence
			deliver-per-xdms
submit-	A	0 . . . 1	An address (URI or URL)	String	DC,	DECA	YES
address			to which the DCD enabler		DS
			should deliver the submit
			request.
submit-	A	0 . . . 1	Identifier set by the	String	DC,	DECA	YES
content-id			DECA, and unique within		DS
			the DCD Service
			Provider's domain.
display-	A	0 . . . 1	The position where the	List of	DC,	DECA	YES
position			content to be displayed if	Strings	DS
			there is an agreed layout
			between DECA and CP.
format	A	0 . . . 1	The format of submitted	List of	DC,	DECA	YES
			content (e.g. jpg, gif, txt,	Strings	DS
			etc.)
scrap	A	1	Indicates whether the	String	DC,	DECA	YES
			submitted content is		DS
			allowed to scrap or not.
private	A	1	Indicates whether the	String	DC,	DECA	YES
			submitted content is		DS
			private or open to public.
bookmark	A	0 . . . 1	A point which has lastly	String	DC,	DECA	YES
			submitted content.		DS
media-	A	0 . . . 1	Media type of the	List of	DC,	DECA	YES
type			submitted content (e.g.	Strings	DS
			audio, video, image, text,
			etc.)

As illustrated in Table 5, the Submit-Metadata includes information such as the relevant content's ‘submit-address’, ‘submit-content-id’, ‘display-position’, ‘format’, ‘scrap’, ‘private’, ‘bookmark’, ‘label’ (or ‘tag’), ‘media-type’, etc. In particular, the ‘display-position’, which is information indicating in which position the relevant content should be stored or displayed, can be designated by the user. Also, the Submit-Metadata may indicate if the content to be submitted is to be simply stored, or requests other content associated with the content to be submitted. Accordingly, the submitted content can be administered by the DCD server 110, and shared even by other users. Because the Submit-Metadata means supplementary metadata that can be used only when content to be submitted is added to the conventional content metadata, the Submit-Metadata may include the existing content metadata.

Referring back to FIG. 2, upon receipt of the ContentSubmit Request message, the DCD server 110 sends in step 205 a ContentUpdate Request message to the content provider 10 referring to Submit-Metadata included in the ContentSubmit Request message in order to request content update. Information elements included in the ContentUpdate Request message are as shown in Table 6 below.

TABLE 6
Information
Element	Req	Type	Description
Channel-ID	Mandatory	String	Channel identifier for the channel offered by the content
			provider
Subscription-	Conditional	String	Comma separated list of subscription identifiers. Present, if
IDs			requesting user has subscription IDs associated with this
			channel.
Submit-	Conditional	list of data structures	One or more submit packages. The submit package
Package			consists of content payload and submit metadata. If
			Channel-ID element is present in the message all items in
			Submit-Package element belong to the same channel
			(identified by Channel-ID element). SHALL be present if
			the ContentUpdateRequest was initiated by a DCD-1
			ContentSubmitRequest.

Upon receipt of the ContentUpdate Request message, the content provider 10 updates the content referring to Submit-Metadata included in the ContentUpdate Request message. The updated content may be shared by other users according to the settings of the Submit-Metadata. The content provider 10 determines whether other content related to the submitted content to the user should be provided, by analyzing the Submit-Metadata. If there is a need to provide other content as a result of the determination, the content provider 10 sends in step 207 a ContentUpdate Response message to the DCD server 110. Information elements given in Table 7 below are included in the ContentUpdate Response message.

TABLE 7
Information
Element	Req	Type	Description
Content-	Conditional	List of Data	One or more content packages. The content package
Package		Structures	consists of content payload and content metadata. Content
			payload could be empty if content-address parameter of
			the content metadata contains the address where the
			content could be retrieved (e.g. URI). This parameter is
			present when the DCD Content Provider has updated
			content to return to the DCD Enabler.

Upon receipt of the ContentUpdate Response message, the content provider 10 sends in step 209 a Personalization Info Acquisition message to a personalization source 30 to acquire personalization information, and performs content adaptation in step 211. Through steps 207, 209 and 211, the DCD server 110 searches for or composes new content associated with the content submitted by the user. In step 213, the DCD server 110 sends a ContentUpdate Response message to the DCD client 120 in order to inform the user of the content updated state and provide the content requested by the user. The user requested content may be either specific content or report information indicating the execution result of the content submitted by the user. The ContentUpdate Response message includes information elements given in Table 8 below.

TABLE 8
Information
Element	Req	Type	Description
Session-ID	Mandatory	String	Session identifier. The Session-ID is unique within the
			service provider domain. If there is an established
			Session, a Session-ID SHALL be present.
Message-ID	Mandatory	String	Identifies this message. The Message-ID is unique within
			a current session. Message identifier consists of the
			transaction identifier suffixed by two numeric characters
			for message index within the transaction. Transaction
			identifier offset is unique within the current session and
			identical for all messages within the transaction.
Channel-ID	Optional	String	ID of the channel related to the content package. If
			absent, the content metadata in the Content-Package
			element SHALL contain Channel-ID attribute.
Content-	Mandatory	List of Data Structures	One or more content packages. The content package
Package			consists of content payload and content metadata.
			Content payload could be empty if content-address
			parameter of the content metadata contains the address
			where the content could be retrieved (e.g. URI). If
			Channel-ID element is present in the message all items in
			Content-Package element belong to the same channel
			(identified by Channel-ID element).

Upon receipt of the ContentUpdate Response message, the DCD client 120 detects content included in the received ContentUpdate Response message, and sends in step 215 a Content message including the detected content to the DCD Enabled Client Application 20. Information elements included in the Content message are as shown in Table 9.

TABLE 9
Information
Element	Req	Type	Description
Content-	Mandatory	Structure	DCD Content Metadata (see
Metadata			Table 2) as provided by the DCD
			enabler.
Content	Optional	Opaque	Opaque DCD Content for the
		Data	DCD-Enabled Client Application.

In step 217, the DCD client 120 sends a ContentDelivery Confirmation message for content reception confirmation to the DCD server 110.

Next, with reference to FIG. 3, a description will be made of the case where the user only aims to submit content.

Steps 221 to 225 in FIG. 3 are identical to steps 201 to 205 in FIG. 2, and the messages, which are sent in the corresponding steps, are also identical.

However, because the embodiment shown in FIG. 3 is aimed at content submission only, the content provider 10, which received the ContentUpdate Request message, stores the received content and then sends in step 227 a ContentUpdate Confirmation message to the DCD server 110 as a message for informing the completion of the user's content submission. Upon receipt of the ContentUpdate Confirmation message, the DCD server 110 sends in step 229 a ContentSubmit Confirmation message to the DCD client 120. Information elements included in the ContentUpdate Confirmation message are as shown in Table 10 below.

TABLE 10
Information
Element	Req	Type	Description
Session-ID	Mandatory	String	Session identifier. The Session-ID is
			unique within the service provider
			domain. If there is an established
			Session, a Session-ID SHALL be
			present.
Message-ID	Mandatory	String	Identifies this message. The Message-
			ID is unique within a current session.
			Message identifier consists of the
			transaction identifier suffixed by two
			numeric characters for message index
			within the transaction. Transaction
			identifier offset is unique within the
			current session and identical for all
			messages within the transaction.

Upon receipt of the ContentSubmit Confirmation message, the DCD client 120 forwards in step 231 the received message to the DCD Enabled Client Application 20. The ContentSubmit Confirmation message serves as a notification message that indicates the completion of content submission as an internal operation of the terminal.

As is apparent from the foregoing description, embodiments of the present invention submit, to a DCD content provider server, content that a user created according to a predetermined rule or format and that includes additional information related to the content, so that the DCD content provider server can store or classify the DCD content and easily control the DCD content when sharing it with other users.

The embodiments of the present invention can also be embodied as computer-readable codes on a computer-readable recording medium. The computer-readable recording medium is any data storage device that can store data which can thereafter be read by a computer system. Examples of the computer-readable recording medium include, but are not limited to, Read-Only Memory (ROM), Random-Access Memory (RAM), CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, and carrier waves (such as data transmission through the Internet via wired or wireless transmission paths). The computer-readable recording medium can also be distributed over network-coupled computer systems so that the computer-readable code is stored and executed in a distributed fashion. Also, function programs, codes, and code segments for accomplishing the present invention can be easily construed as within the scope of the invention by programmers skilled in the art to which the present invention pertains.

While the present invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. For example, the DCD system is an example of a user content system, which delivers user content, and the DCD client and the DCD server are also examples of a user content client and a user content server in the user content system. Further, the DCD Enabled Client Application is also an example of user content Enabled Client Application.

Claims

1. A method for updating or sharing content by a terminal, comprising: generating, using a client application, a request for updating or sharing a first version of content, wherein the request comprises the first version of the content, a first information element, a second information element, a third information element and an application identifier of the user client application, the first information element indicates whether the first version of the content is private content or public content for sharing with at least one terminal, the second information element indicates a condition for updating the first version of the content, and the third information element indicates a network for use in content delivery between the terminal and a server;transmitting the request to the server, wherein the server transmits a notification that the first version of the content is shared to the at least one terminal based on the indication by the first information element that the first version of the content is the public content; andreceiving, from the server using a network indicated by the third information element, a second version of the content, based on the condition,wherein the second version of the content is updated from the first version of the content and is different from the first version of the content.

2. The method of claim 1, wherein the condition is a time or a location of the terminal.

3. The method of claim 1, wherein receiving the second version of the content further comprises receiving a notification that the first version of the content is updated in response to new contents which is received from one of the at least one terminal by the server and is added to a package including the first version of the content.

4. The method of claim 1, further comprising displaying a reminder including the first version of the content on the terminal in response to receiving the indication, wherein the reminder is shared to the at least one terminal and displayed on the at least one terminal if the first information element indicates that the first version of the content is the public content.

5. A terminal for updating or sharing content, comprising: a memory;a transceiver; anda processor configured to:generate, using a client application, a request for updating or sharing a first version of content, wherein the request comprises the first version of the content, a first information element, a second information element, a third information element and an application identifier of the user client application, the first information element indicates whether the first version of content is private content or public content for sharing with at least one terminal, the second information element indicates a condition for updating the first version of the content, and the third information element indicates a network for use in content delivery between the terminal and a server;control the transceiver to transmit the request to the server, wherein the server transmits a notification that the first version of the content is shared to the at least one terminal if the first information element indicates that the first version of the content is the public content; andcontrol the transceiver to receive, from the server using a network indicated by the third information element, a second version of the content based on the condition if the first version of the content is updated,wherein the second version of the content is updated from the first version of the content and is different from the first version of the content.

6. The terminal of claim 5, wherein the condition is a time or a location of the terminal.

7. The terminal of claim 5, wherein the transceiver receives a notification that the first version of the content is updated in response to new contents which is received from one of the at least one terminal by the server and is added to a package including the first version of the content.

8. The terminal of claim 5, further comprising a displaying unit configured to display a reminder including the first version of the content on the terminal in response to receiving the indication, wherein the reminder is shared to the at least one terminal and displayed on the at least one terminal if the first information element indicates that the first version of the content is the public content.

9. A method for updating or sharing content by a server, comprising: receiving, from a terminal, a request for updating or sharing a first version of content, wherein the request comprises the first version of the content, a first information element, a second information element, a third information element and an application identifier of the user client application, the first information element indicates whether the first version of the content is private content or public content for sharing with at least one terminal, the second information element indicates a condition for updating the first version of the content, and the third information element indicates a network for use in content delivery between the terminal and the server;transmitting a notification that the first version of the content is shared to the at least one terminal based on the indication by the first element that the first version of the content is the public content; andtransmitting, using a network indicated by the third information element, a second version of the content based on the condition,wherein the second version of the content is updated from the first version of the content and is different from the first version of the content.

10. The method of claim 9, wherein the condition is a time or a location of the terminal.

11. The method of claim 9, wherein transmitting the second version of the content further comprises transmitting a notification that the second version of the content is updated in response to new contents which is received from one of the at least one terminal by the server and is added to a package including the first version of the content.

12. The method of claim 9, wherein the terminal displays thereon a reminder including the first version of the content in response to receiving the indication, wherein the reminder is shared to the at least one terminal and displayed on the at least one terminal if the first information element indicates that the first version of the content is the public content.

13. A server for updating or sharing content, comprising: a memory;a transceiver; anda processor configured to:control the transceiver to receive, from a terminal, a request for updating or sharing a first version of content, wherein the request comprises the first version of the content, a first information element, a second information element, a third information element and an application identifier of the user client application, the first information element indicates whether the first version of the content is private content or public content for sharing with at least one terminal, the second information element indicates a condition for updating the first version of the content, and the third information element indicates a network for use in content delivery between the terminal and the server;control the transceiver to transmit a notification that the first version of the content is shared to the at least one terminal if the first element indicates that the first version of the content is the public content; andcontrol the transceiver to transmit, using a network indicated by the third information element, a second version of the content based on the condition if the first version of the content is updated,wherein the second version of the content is updated from the first version of the content and is different from the first version of the content.

14. The server of claim 13, wherein the condition is a time or a location of the terminal.

15. The server of claim 13, wherein the processor controls the transceiver to transmit a notification that the first version of the content is updated in response to new contents which is received from one of the at least one terminal by the server and is added to a package including the first version of the content.

16. The server of claim 13, wherein the terminal displays thereon a reminder including the first version of the content in response to receiving the notification, wherein the reminder is shared to the at least one terminal and displayed on the at least one terminal if the first information element indicates that the first version of the content is the public content.