KR101128852B1 - Method, Terminal, and Server for Administrating Terminal Memory in Updating Content - Google Patents

Abstract

The present invention relates to a terminal memory management method for content update, and a terminal and a server therefor.

The present invention provides a terminal memory method for updating a content before a DCD client in a terminal receives a content to be updated from a DCD server, the method comprising: (a) preparing a memory management step of receiving update list information from the DCD server; ; (b) checking a content size (UCS) to be updated for the content (UC) to be updated from the update list information; (c) checking a previously updated content size (PUCS) for a previously updated content (PUC) using the update list information; (d) checking available memory size (AMS) for unused storage space of the memory; (e) comparing whether the sum of the available memory size (AMS) and the previously updated content size (PUCS) is equal to or greater than the content size to be updated (UCS); (f) In the step (e), if the sum of the available memory size (AMS) and the previous updated content size (PUCS) is equal to or greater than the content size (UCS) to be updated, the previous content (PUC) is obtained. Deleting; And (g) requesting the DCD server to update the content (UC) to be updated, and a terminal memory management method for the content update, and a terminal and a server therefor.

According to the present invention, there is an effect of providing a satisfactory dynamic content transmission service to the user by maintaining the memory state of the user terminal so that the content can always be received.

Terminal, content, memory, DCD

Description

Method of managing terminal memory for updating content and terminal and server therefor {Method, Terminal, and Server for Administrating Terminal Memory in Updating Content}

The present invention relates to a terminal memory management method for content update, and a terminal and a server therefor. More specifically, the DCD client in the terminal performs the memory management function of the terminal before receiving the content to ensure the available memory size to store the content to be transmitted, so that the memory state of the user terminal can always receive the content The present invention relates to a terminal memory management method for updating content that can be maintained and that provides an effective dynamic content delivery service to a user, and a terminal and a server therefor.

Nowadays, due to the expansion of network infrastructure, there are many content providers that produce and store the contents that users want, and users can receive the contents by visiting the relevant sites operated by these contents providers. .

In order to effectively deliver such contents, Web Syndication is desperately required as a way to deliver information produced and changed in real time on the Internet, and RSS (Really Simple Syndication) is a kind of Web Syndication. ), And ATOM have been proposed and become a standard, and such a content can be distributed by RSS (Really Simple Syndication), ATOM, etc., and collection of content through a program such as RSS Reader has also become much smoother.

However, in a relatively resource-constrained mobile environment, access to content distributed using RSS / ATOM as in a PC environment is limited. In order to solve this problem, there is a demand for a method for delivering the collected content in an optimized form for mobile terminals, and a representative example is Dynamic Content Delivery (DCD), which is being promoted by the Open Mobile Alliance (OMA). "DCD"). DCD seeks to deliver the user's desired contents to the terminal user in the most effective way by reflecting the user's preference. As a content delivery technique, the DCD server sends a content update (transmission) notification message to the terminal. A push method using a DCD-2 interface for receiving a content update (transmission) request message from a terminal and transmitting the corresponding content to the terminal has been proposed. By the push method using the DCD-2 interface, the user's terminal accesses the site on the wireless Internet in the existing mobile service and goes through various steps to find the content and visits the content in a difficult manner. The purpose of DCD can be achieved by delivering to a user's terminal and providing contents desired by the user by maximizing reflection of the user's preference. In addition, the DCD also accepts a pull method using a DCD-1 interface in which a DCD server transmits content to a terminal by a content updater (transmission) request from an existing user's terminal.

This dynamic content delivery (DCD) technology is a client server model, which is performed by interworking with a DCD server serving as a server for delivering content and a DCD client in a terminal serving as a client for receiving content. It defines the message exchanged between the DCD server and the DCD client, and defines the protocol for the contents and the way of sending and receiving messages.

However, in the conventional dynamic content transmission technology, there is a problem in that the terminal does not receive the content to be received due to lack of the remaining storage space of the memory for storing the content in the terminal.

In addition, in the conventional dynamic content transmission technology, in order for a terminal to receive desired content, the user must directly select the content to be deleted from previously stored contents, thereby incurring inconvenience of memory management and delayed content reception. There is a problem.

An object of the present invention for solving this problem is to provide a satisfactory dynamic content transmission service to the user by maintaining the memory state of the user terminal to always receive the content.

Another object of the present invention is to solve the inconvenience of memory management and content reception delay that the user must directly select the content to be deleted by the server that transmits the content to the terminal transmits information about the content to be deleted.

Still another object of the present invention is to provide a user with convenience in managing a terminal memory by automatically deleting the corresponding content according to the expiration time by recognizing the expiration time information for each content.

In order to achieve the object of the present invention, the present invention, the server transmits the content (previously updated content) information to be deleted from the content stored in the memory to the terminal, the terminal received content (previously updated content) size, update By performing the memory management function using the content size to be used and the available memory size, the memory state of the user terminal is always maintained to be able to receive the content. The memory management function can also be performed by deleting contents by expiration time by receiving it together.

As described above, by using the present invention, the memory state of the user terminal is maintained so that the content can be always transmitted, thereby providing a satisfactory dynamic content transmission service to the user.

According to the present invention, the server which transmits the content to the terminal transmits the information about the content to be deleted by the terminal, thereby eliminating the inconvenience of memory management and the content reception delay in which the user must select the content to be deleted. .

According to the present invention, the terminal recognizes the expiration time information for each content and automatically deletes the corresponding content according to the expiration time, thereby providing the user with convenience in managing the terminal memory.

According to an aspect of the present invention for achieving this object, before the DCD client in the terminal receives the content to be updated from the DCD server, the DCD client in the terminal memory method for updating the content, (a) the DCD server A memory management preparation step of receiving update list information from the memory; (b) checking a content size (UCS) to be updated for the content (UC) to be updated from the update list information; (c) checking a previously updated content size (PUCS) for a previously updated content (PUC) using the update list information; (d) checking available memory size (AMS) for unused storage space of the memory; (e) comparing whether the sum of the available memory size (AMS) and the previously updated content size (PUCS) is equal to or greater than the content size to be updated (UCS); (f) In the step (e), if the sum of the available memory size (AMS) and the previous updated content size (PUCS) is equal to or greater than the content size (UCS) to be updated, the previous content (PUC) Deleting; And (g) requesting the DCD server to update the content (UC) to be updated.

According to another aspect of the present invention, in a terminal including a DCD client that performs a memory management function of the terminal, the DCD client, (a) update list response message and update content including update list information from the DCD server A message transmission / reception manager configured to receive a notification message and transmit an update list request message to the DCD server; (b) a content size management unit for checking a content size (UCS) to be updated, a previously updated content size (PUCS), and a stored content size (PSCS); (c) a memory size management unit which checks the memory size OMS and the available memory size AMS in the memory; (d) a memory securing processor that deletes content that has expired from the one or more contents stored in the memory, and deletes the stored content for the content to be updated when a content update occurs; (e) a memory management information storage management unit configured to receive and store the update list information including content expiration time information, content size information, and previously updated content (PUC) ID information from the DCD server; And (f) a content reception management unit that performs a function of receiving the content to be updated from the DCD server.

According to another aspect of the present invention, in the DCD server for transmitting the update list information so that the DCD client performs a memory management function before the DCD client in the terminal receives the content update from the DCD server, the update list information Is content list information including information on at least one or more contents that the DCD client can receive from the DCD server, and includes application ID information, channel ID information, content ID information, and content of the content included in the content list. And size information, content expiration time information, and previously updated content (PUC) ID information.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention unclear.

1 is a diagram illustrating an entire system for performing a terminal memory management function for dynamic content transmission according to the present invention.

Referring to FIG. 1, the entire system for providing a terminal memory management method for dynamic content delivery (DCD) according to the present invention is referred to as a DCD client 110, an application 120, And a terminal 100 including a memory 160, a DCD server 130, a content providing server 140, and a network 150.

The DCD service may be described as a client server model, and the content stored in the content providing server 140 may be networked by interworking between the DCD client 110 serving as a client and the DCD server 130 serving as a server. It is delivered from the DCD server 130 to the DCD client in the terminal 100 through 150. The delivered content is delivered to the application 120 in the terminal 100 to be displayed on the standby screen or the screen display of the terminal 100.

The DCD client 110 is a module of a client role existing in the terminal 100 that performs the DCD service in cooperation with the DCD server 130 and performs a function of receiving content from the DCD server 130. The received content is delivered to the application 120 so that the content can be displayed on the standby screen or the screen display unit.

In addition, the DCD client 110 receives update list information that is content list information from the DCD server 130, and performs a memory management function of the terminal 100. This memory management function will be described in detail with reference to FIGS. 2, 5, and 6.

The memory 160 is a storage space in which the DCD client 110 stores the content received from the DCD server 130, and the size is managed by the DCD client 110.

The DCD server 130 is a server that performs a DCD service in conjunction with the DCD client 110 and receives the content from the content providing server that stores the content and transmits the content to the DCD client 110 in the terminal 100. .

In addition, the DCD server 130 transmits the update list information, which is the content list information necessary for the memory management function, to the DCD client 110 in the terminal.

The network 150 is a path through which a message or content is transmitted from the DCD server 130 to the DCD client 110 of the terminal 100. The network 150 includes a CDMA 1x network, an EVDO network, a WCDMA network, an HSDPA network, a HSUPA network, a Wibro network, and the like. It may be one of a mobile communication network, a wireless network such as a WiFi network, a wired Internet, and a broadcast type network.

2 is a diagram illustrating a type of a terminal memory management method for dynamic content transmission according to the present invention.

FIG. 2 is a diagram illustrating a type of a terminal memory management method for dynamic content transmission according to the present invention. The terminal memory management method is divided into two types according to the time point at which the memory is managed.

Referring to FIG. 2, the first method of the terminal memory management method includes a memory managed by a content expiration time in which a terminal is managed by a DCD client in a terminal when there is no Updating Content (UC) to be updated from a DCD server. How to manage.

The "memory management method by the content expiration time" is a method of extracting and deleting the content expires from the contents stored in the memory.

When the content update from the DCD server does not occur, the memory management method according to the content expiration time performed by the DCD client in the terminal will be described in more detail as follows.

The method for managing memory by content expiration time includes monitoring content expiration time information of contents stored in a memory in a terminal to extract content that has reached the content expiration time, and deleting the extracted content from memory due to the content expiration time. It is carried out including.

The aforementioned content expiration time information is information that the DCD client recognizes when receiving update list information including information on the corresponding content from the DCD server or when the corresponding content is actually received.

Referring to FIG. 2, a second method of a terminal memory management method includes a memory management method for updating contents, in which a memory is managed by a DCD client in a terminal when the terminal generates newly updated content (UC) from a DCD server. "to be.

This "memory management method for content update" uses the update list information transmitted from the DCD server to delete previous updated content (PUC) from memory, or additionally transfer among previously stored contents in memory. This is done by deleting the Stored Content (Pvious Stored Content: PSC) selected by the user, except for the Updated Content (PUC). The above-described memory management method for updating the content will be described in more detail with reference to FIG. 6.

3 is a diagram for describing terms related to content and content size for a terminal memory management method for dynamic content transmission according to the present invention.

FIG. 3A is a diagram of Updating Content (UC) found by a DCD client receiving update list information from a DCD server.

Referring to A of FIG. 3, the content UC to be updated is content to be updated after the DCD client performs a memory management method for updating the content and has a predetermined size. This size is called Updating Content Size (UCS).

Such Updating Content Size (UCS) can be checked using content size information included in update list information received from the DCD server.

The aforementioned update list is content list information including information on at least one or more contents that the DCD client can receive from the DCD server, and includes application ID information, channel ID information, and content of the contents included in the content list. ID information, content size information, content expiration time information, for the previously updated content (PUC) included in the same channel as the content (UC) to be updated and represented by the same application and differ only in version. Contains PUC (formerly updated content) ID information.

The content expiration time information in the update list is information on a storage time to store the content in the memory, and is used for the memory management method based on the content expiration time, which is the first memory management method. The content is then automatically deleted by the DCD client.

PUC (formerly updated content) ID information in the update list is information used for the memory management method for content update, which is the second memory management method, and terminal memory corresponding to the PUC ID included in the update list information received by the DCD client. The content of the image is extracted, and the size of the corresponding content is used to delete.

FIG. 3B illustrates that the DCD client of the terminal is already updated (received) from the DCD server and stored in a memory, and is included in the same channel as the aforementioned content UC to be updated and represented by the same application. This is a drawing for Previous Updated Content (PUC), which differs only in version.

Referring to B of FIG. 3, the size of a previously updated content PUC has a size of a predetermined size is called a previously updated content size (PUCS).

The previously updated content size (PUCS) can be identified using the content ID information of the contents stored in the memory of the terminal and the PUC (previously updated content) ID information included in the update list information. When the DCD client receives the update list information from the DCD server, extracts the content on the terminal memory corresponding to the PUC (formerly updated content) ID included in the received update list information, and checks the size of the previously updated content. It becomes size (PUCS).

FIG. 3C is a diagram of a stored content (PSC) selected to be deleted by a user among contents other than the previously updated content (PUC) among contents stored in the terminal memory. 3C illustrates an example of three pieces of content selected by the user for deletion.

Referring to FIG. 3C, PSCS ₁ is the size for the first selected storage content (PSC ₁ ) by the user, PSC ₂ is the size for the second selected storage content (PSC ₂ ) by the user, and PSC ₃ is The size of the stored content PSC ₃ selected by the user.

3, UCS (content to be updated), PUCS (content to be updated), and PUCS (content to be updated) for PSC _K (K-th selected stored content) Size) and how PSCS _K (the K-th selected storage content size) are used in the memory management method will be described in detail with reference to FIG.

4 is a diagram for describing terms related to a memory for a method of managing a terminal memory for dynamic content transmission according to the present invention.

Referring to FIG. 4, a diagram illustrating a memory state of a terminal includes memory of an occupied memory (OM) portion, which is a memory portion of which a DCD client updates content from a DCD server, and stores the content. It can be divided into Available Memory (AM) except Memory in use.

Referring to FIG. 4, the size of the in-use memory OM is called an occupied memory size (OMS), and the size of the available memory AM is called an available memory size (AMS).

Referring to FIG. 4, the in-use memory OM includes PUC (previously updated content), PSC ₁ (first selected storage content to be deleted by the user), PSC ₂ (second selected storage content to be deleted by the user), PSC ₃ (the third selected stored content to be deleted by the user), and USC (undeleted stored content not selected to be deleted by the user) are stored, and the in-use memory size (OMS) is PUCS (the previously updated content size). ), PSCS ₁ (the first selected stored content size to be deleted by the user), PSCS ₂ (the second selected stored content size to be deleted by the user), PSCS ₃ (the third selected stored content size to be deleted by the user), And USCC (undeleted stored content size not selected for deletion by the user).

5 is a flowchart illustrating a content transmission process including a terminal memory management function for content update according to the present invention.

5 is a flowchart illustrating a "memory management method for content update" which is a second method of the terminal memory management method for dynamic content transmission according to the present invention.

In order for the terminal 100 to receive the contents from the DCD server 130, a space larger than the size of the contents to be transmitted to the internal memory of the terminal must be provided. However, due to already stored content, there may be insufficient memory space to receive the content (UC) to be updated. Therefore, the "memory management method for content update" is a DCD client 110 checks the memory before receiving the content (UC) to be updated, the available memory size (AMS) to store the new content (UC) is stored If it is insufficient, the previously updated content (PUC) is deleted from the already stored content to increase the available memory size (AMS) to secure the memory space for the new content (UC) to be updated. The " memory management method for updating content " is performed by the DCD client 110 after the DCD client 110 receives update list information including content size information of content to be newly received from the DCD server 130.

Referring to FIG. 5, the DCD client 110 receives a content update notification message including session ID information from the DCD server 130 (S 500), and provides information on contents that can be transmitted from the DCD server 130. The update list request message for requesting the update list information, which is the content list information including the information, is transmitted to the DCD server 130 (S 502) to receive an update list response message including the update list information (S 504). .

In the aforementioned method for receiving an update list response message (S 504), the DCD client 110 requests and receives the DCD server 130 through the update list request message and the DCD client 110 receives the content from the DCD server 130. After receiving the update notification message, there is a method of requesting and receiving the update list request message to the DCD server 130. However, FIG. 2 illustrates a method in which the DCD client 110 receives a content update notification message from the DCD server 130 and requests and receives the DCD server 130 through an update list request message.

The update list information is content list information including information on at least one or more contents that the DCD client 110 can receive from the DCD server. The update list information includes application ID information, channel ID information, and content of the contents included in the content list. ID information, content size information, content expiration time information, and previously updated content (PUC) ID information.

Referring to FIG. 5, the DCD client 110 receives the above-described update list information (S 504), and receives a partial or full content corresponding to the content ID included in the update list information in the storage space of the memory in the terminal. Memory management function (memory management function for content update) to manage the (S 506) is performed. After the storage space for the content to be transmitted is secured in the memory by performing the memory management function, the DCD server 130 sends a content update request message including the content ID information of the content to be transmitted in order to request the content to be transmitted. In step S 508, a content update response message including the corresponding content is received from the DCD server 130 (S 510). If there is more than one content (UC) to be updated, S 508 and S 510 transaction processing is repeatedly performed for each individual content. After the DCD client 110 receives all the contents UC to be updated, the DCD client 110 transmits a content update complete request message to the DCD server 130 (S512), and receives a content update complete response message from the DCD server (S). In operation 514, the terminal is provided with the dynamic content transmission service by interworking with the DCD client 110 and the DCD server 130. The above-described memory management function (S 506) step for updating the content will be described in more detail with reference to FIG. 6.

6 is a flowchart illustrating a terminal memory management function for updating contents according to the present invention.

FIG. 6 is a diagram for describing a flowchart of a memory management method for updating contents, which is a second method among the terminal memory management methods described above with reference to FIG. 2.

Referring to FIG. 6, before the DCD client in the terminal receives the content (UC) to be updated from the DCD server, the memory management method for updating the content (S 506) of the DCD client may include a memory for receiving update list information from the DCD server. Management preparation step (S 504), the content size (UCS) to be updated for the content (UC) to be updated from the update list information (S 5061), the previous updated content (PUC) using the update list information Confirmation step (S 5062) of the previously updated content size (PUCS) and the available memory size (AMS) for the unused storage space of the memory, plus the available memory size (AMS) and the previously updated content size (PUCS) Comparing whether the content to be updated (UCS) or more (S 5063), and in step S 5063, if the available memory size (AMS) and If the value obtained by adding the previously updated content size (PUCS) is equal to or larger than the content size (UCS) to be updated, deleting the previous content (PUC) (S 5064), and updating the content (UC) to be updated to the DCD server. Requesting step S508 is performed.

In step S5063, if the sum of the available memory size (AMS) and the previously updated content size (PUCS) is less than the content size (UCS) to be updated, the user wants to delete the contents among the pre-stored contents in the memory. The step S 507 of further deleting the selected stored content PSC is performed, and then step S 508 is performed.

The step S507 of additionally deleting the stored content PSC selected by the aforementioned user will be described in more detail below.

Referring to FIG. 6, in operation S 507, additionally deleting the selected stored content PSC is set to a value of the counter K to 1 at step S 5071. The content stored in the memory is displayed on the screen of the terminal. Displaying an additional deletion request message (S 5072), the stored content selected for deletion by the user of the terminal (PSC _K ) Size checking step (S 5073), determining whether the following equation 1 is satisfied (S 5074), while increasing the value of the counter (K) by 1 (S 5075) until the following equation 1, step S 5072, Repeatedly performing steps S 5073 and S 5074, and a counter K value that satisfies Equation 1 below in step S 5074, corresponds to a K value that satisfies 1 in the following mathematics. Deleting all selected stored content (PSC _K ) and the previously updated content (PUC) (S 5076) is performed.

In FIG. 6, it can be seen that the memory in the content-receivable state is changed into the memory in the content-receivable state by the above-described memory management method, thereby receiving content (content (UC) to be updated) that cannot be transmitted.

7 illustrates an update list request message required to perform a terminal memory management function for dynamic content transmission according to the present invention.

FIG. 7 is a diagram illustrating an update list request message requested by a DCD client to a DCD server to receive update list information in order to perform a memory management function for dynamic content transmission according to the present invention.

Referring to FIG. 7, the update list request message 700 includes primitive type ID 710 information for identifying a message type, transaction ID 720 information for identifying message processing, and corresponding message processing. Includes session ID 730 information for identifying a session in which is performed, and request trigger ID 740 information for identifying a reason for requesting transmission of content.

The primitive type ID 710 information included in the aforementioned update list request message 700 is information for identifying a message type, and is unique to the update list request message 700 so as to be distinguished from other messages. It can be set to an ID value. For example, if the primitive type ID 710 for the update list request message 700 is set to "m01", the DCD server 130 receives a message and the primitive in the received message is received. By checking that the type ID information 710 is set to "m01", it is possible to recognize that the received message is the update list request message 700. Accordingly, the DCD server 130 transmits the update list information to the DCD client 110. Sends an update list response message containing.

The request trigger ID 740 information included in the aforementioned update list request message 700 is information that is set to identify the reason why the DCD client 110 wants to receive content from the DCD server 130. Information set in response to a transmission request reason including a server push), a user request, and an initial update. For example, if the request trigger ID 740 is "t00", the reason for requesting the transmission for the content is by DCD Server Push. That is, before the DCD client 110 transmits the update list request message 700 to the DCD server 130, the DCD client 110 receives a content update notification message (Push message) from the DCD server 130 to request content transmission. If the request trigger ID 740 is "t01", the reason for requesting transmission of content is due to a user request. That is, the user requests a content without receiving a content update notification message (Push message) from the DCD server 130 before the DCD client 110 transmits the update list request message 700 to the DCD server 130. . And, if the request trigger ID 740 is "t02", the reason for requesting the transmission of the content is due to an initial update.

8 illustrates an update list response message required to perform a terminal memory management function for dynamic content transmission according to the present invention.

8 is an update list response message 800 that is a response message to an update list request message that a DCD client sends to a DCD server to receive update list information. The update list response message 800 includes update list information necessary for the DCD client to perform a memory management function.

Referring to FIG. 8, the update list response message 800 includes primitive type ID 810 information for identifying a message type, transaction ID 820 information for identifying message processing, and corresponding message processing. Session ID 830 information for identifying the session in which the transaction is performed, transaction processing result 840 information corresponding to the transaction ID, and an update list required to perform a memory management function. 850 contains information.

The primitive type ID 810 information included in the aforementioned update list response message 800 is information for identifying a message type, and is unique to the update list response message 800 so as to be distinguished from other messages. It can be set to an ID value. For example, if the primitive type ID 810 for the update list response message 800 is set to "m02", the DCD client 110 receives a message and the primitive in the received message is received. By checking that the type ID 810 is set to “m02”, the received message may be recognized as the update list response message 800. Accordingly, the DCD client 110 updates the update list response message 800. The list 850 information is extracted to perform the memory management function described above with reference to FIG. 4.

The update list 850 information included in the aforementioned update list response message 800 will be described in detail with reference to FIG. 9.

9 is a diagram illustrating update list information in an update list response message required to perform a terminal memory management function for dynamic content transmission according to the present invention.

Referring to FIG. 9, the update list 850 information is content list information including information on at least one or more contents that the DCD client can receive from the DCD server. The application ID 851 information for the application, the channel ID 852 information for the channel that can accommodate the content, the content ID 853 information for the content, and the content Information about the content size (854), content expiration time (855) for the content, and updated Content ID (856) information before the content is updated (sent). Include.

The update list 850 information is stored by the DCD client in the terminal and used when performing a memory management function.

The content expiration time (855) information in the update list is information on a storage time to store the content in the memory, and is used for the memory management method by the content expiration time, which is the first memory management method. When the expiration time comes, the content is automatically deleted by the DCD client.

The PUC (formerly updated content) ID 856 information in the update list is information used for the memory management method for content update, which is the second memory management method, and corresponds to the PUC ID included in the update list information received by the DCD client. The contents of the terminal memory to be extracted are used to check and delete the size of the contents.

10 is a diagram illustrating an internal configuration of a terminal including a DCD client performing a terminal memory management function for dynamic content transmission according to the present invention.

Referring to FIG. 10, a terminal 100 including a DCD client that performs a memory management function of the terminal described above includes a DCD client 110, an application 120, and a memory 160.

Referring to FIG. 10, a DCD client performing a terminal memory management function for dynamic content transmission includes a message transmission and reception management unit 111, a content size management unit 112, a memory size management unit 113, a memory securing processor 114, and a memory. And a management information storage management unit 115 and a content reception management unit 116.

The message transmission / reception manager 111 receives an update list response message and a content update notification message including update list information from the DCD server, and transmits an update list request message to the DCD server.

The content size manager 112 performs a function of checking a content size (UCS) to be updated, a previously updated content size (PUCS), and a selected storage content size (PSCS).

The memory size manager 113 checks the memory size OMS and the available memory size AMS in the memory.

The memory securing processor 114 deletes the content whose time has expired among the one or more contents stored in the memory, deletes the previously stored updated content (PUC) previously stored for the content (UC) to be updated when the content update occurs, and Performs a function of further deleting the stored content (PSC) selected by the.

The memory management information storage manager 115 receives and stores update list information including content expiration time information, content size information, and previously updated content (PUC) ID information from the DCD server.

The content reception management unit 116 performs a function of receiving the content (UC) to be updated from the DCD server.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, by using the present invention, the memory state of the user terminal can be maintained so that the content can be always transmitted, thereby providing a satisfactory dynamic content transmission service to the user and providing convenience of terminal memory management. Content Providers (CPs) can drive industrial economic benefits.

1 is a diagram showing an overall system for performing a terminal memory management function for dynamic content transmission according to the present invention;

2 is a diagram illustrating a type of a terminal memory management method for dynamic content transmission according to the present invention;

3 is a view for explaining terms related to content and content size for a terminal memory management method for dynamic content transmission according to the present invention;

4 is a view for explaining terms related to a memory for a terminal memory management method for dynamic content transmission according to the present invention;

5 is a flowchart illustrating a content transmission process including a terminal memory management function for updating contents according to the present invention;

6 is a flowchart illustrating a terminal memory management function for updating contents according to the present invention;

7 is a view showing an update list request message required to perform a terminal memory management function for dynamic content transmission according to the present invention;

8 is a view showing an update list response message required to perform a terminal memory management function for dynamic content transmission according to the present invention;

9 illustrates update list information in an update list response message required to perform a terminal memory management function for dynamic content transmission according to the present invention;

10 is a diagram illustrating an internal configuration of a terminal including a DCD client performing a terminal memory management function for dynamic content transmission according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: terminal 110: DCD client

111: message transmission and reception management unit 112: content size management unit

113: memory size managing unit 114: memory securing managing unit

115: memory management information storage management unit 116: content reception management unit

120: application 130: DCD server

140: content providing server 160: memory

Claims (14)

In the terminal memory management method for updating the content before the DCD client in the terminal receives the content to be updated from the DCD server, (a) a memory management preparation step of receiving update list information from the DCD server; (b) checking a content size (UCS) to be updated for the content (UC) to be updated from the update list information; (c) checking a previously updated content size (PUCS) for a previously updated content (PUC) using the update list information; (d) checking available memory size (AMS) for unused storage space of the memory; (e) comparing whether the sum of the available memory size (AMS) and the previously updated content size (PUCS) is equal to or greater than the content size to be updated (UCS); (f) In the step (e), if the sum of the available memory size (AMS) and the previous updated content size (PUCS) is equal to or greater than the content size (UCS) to be updated, the previously updated content (PUC). Deleting); And (g) requesting an update for the content (UC) to be updated from the DCD server Terminal memory management method for updating the content comprising a. The method of claim 1, The DCD server, Performing a dynamic content transmission service in association with the DCD client, receiving the content from a content providing server storing the content, transmitting the content to the DCD client in the terminal, and transmitting the update list information to the DCD client Terminal memory management method for updating the content, characterized in that. The method of claim 1, The DCD client, A module existing in the terminal that performs a dynamic content transmission service in cooperation with the DCD server, and functions as a client that receives the content from the DCD server, and receives the update list information from the DCD server. And performing a memory management function of the terminal. The method of claim 1, The DCD client receives the update list information, The DCD client requests and receives the update list information from the DCD server, and the DCD client requests and receives the update list information from the DCD server after receiving a content update notification message from the DCD server. Terminal memory management method for updating the content, characterized in that. The method of claim 1, The update list (Update List), Content list information including information on at least one or more content that the DCD client can receive from the DCD server, the application ID information, channel ID information, content ID information, content size information of the content included in the content list, Content expiration time information, PUC (previous update) for the previously updated content (PUC) included in the same channel as the content (UC) to be updated, represented by the same application, and differing only in version Contents) ID information, the terminal memory management method for updating the content, characterized in that it comprises. The method of claim 5, The content expiration time information (Content Expire Time), Storage time information to store the corresponding content in the memory, and when the content expires, the content is deleted by the DCD client. The method of claim 1, The Updating Content Size (UCS) to be updated, The terminal memory management method for updating content, characterized in that it is possible to check using the content size information included in the update list information. The method of claim 1, The Previous Updated Content Size (PUCS) is And identification of the contents stored in the memory of the terminal by using content ID information and PUC (formerly updated content) ID information included in the update list information. The method of claim 1, In the step (e), If the sum of the available memory size (AMS) and the previously updated content size (PUCS) is less than the content size (UCS) to be updated, the stored content (PSC) selected by the user among contents previously stored in the memory The terminal memory management method for the content update, characterized in that for further performing the step of deleting. The method of claim 9, The selected stored content (Previous Stored Content: PSC), The terminal memory management method for content update, characterized in that the contents other than the previously updated content (PUC) and undeleted stored content (USC) among the contents previously stored in the memory. The method of claim 9, The step of deleting and deleting the selected stored content (PSC), (h1) setting the counter K value to 1; (h2) displaying an additional deletion request message for content previously stored in the memory on a screen display of the terminal; (h3) Stored content selected for deletion by the user of the terminal (PSC _K) A) size checking step; (h4) determining whether the following comparison equation is satisfied;

(h5) repeating steps (h2) to (h4) while increasing the value of the counter (K) by 1 until the comparison expression is satisfied; And (h6) If the value of the counter K that satisfies the comparison expression in the step (h4) is found, the value of the previously updated content PUC and 1 to the value of the counter K that satisfies the comparison expression may be obtained. Deleting all the selected stored content (PSC _K ) Terminal memory management method for updating the content comprising a. A terminal including a DCD client that performs a memory management function of a terminal, The DCD client, (a) a message transmission / reception manager configured to receive an update list response message and content update notification message including update list information from a DCD server, and transmit an update list request message to the DCD server; (b) a content size management unit for checking a content size (UCS) to be updated, a previously updated content size (PUCS), and a stored content size (PSCS); (c) a memory size management unit which checks the memory size OMS and the available memory size AMS in the memory; (d) a memory reclamation processor that deletes previously stored previously updated content (PUC) for content (UC) to be updated when a content update occurs, and optionally further deletes the stored content (PSC) selected by the user. ; (e) a memory management information storage management unit configured to receive and store the update list information including content expiration time information, content size information, and previously updated content (PUC) ID information from the DCD server; And (f) a content reception management unit that performs a function of receiving the content (UC) to be updated from the DCD server Terminal for performing a memory management function comprising a. In the DCD server for transmitting the update list information so that the DCD client performs a memory management function before the DCD client in the terminal receives the content update from the DCD server, The update list information, Content list information including information on at least one or more contents that the DCD client can receive from the DCD server, wherein application ID information, channel ID information, content ID information, and content size information of the contents included in the content list. DCD server for providing a terminal memory management function, including content expiration time information, previously updated content (PUC) ID information. The method of claim 13, The DCD server transmits the update list information, One of a method for receiving and transmitting a request for the update list information from the DCD client, and a method for receiving and transmitting a request for the update list information from the DCD client after transmitting a content update notification message to the DCD client. DCD server for providing a terminal memory management function, characterized in that.

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