TW201638811A - Methods and apparatuses for providing content and computer-readable recording medium - Google Patents

Abstract

Provided are methods and apparatuses for providing content, the method comprising: storing, by a first device, a first content at a location and information defining access right to the first device stored in the first device; and sending, by a second device, a second content associated with the first content, access information for accessing the first content, and location information for identifying the location, to a third device. The first device, in response to receiving a request being based on the location information and the access information, determines that the first content is accessible by a user of the third device based on the information.

Description

Method and system for providing content and computer readable recording medium

The present invention relates generally to methods and apparatus for providing content over a network, and more particularly to a method and apparatus for providing content over a network, wherein the network can be provided via the network The original information of the content is for use. More particularly, the present invention relates to a method and apparatus for efficiently backing up data to a plurality of storage devices connected via a network, a backup data providing device, and a backup system.

The term "content" generally refers to a variety of materials used over a wired or wireless network, such as characters, symbols, voice, video, or video. Due to the development of information technology (such as the development of information technology provided by the Internet, digital cameras and mobile phones), meaningful information has been made available faster than traditional media, and people can communicate via the communication network. It shares the content it owns with other users.

Content can be shared by users connected via the Internet by using various methods (eg, via web pages, blogs, or web magazines in a billboard format). In general, the content represented on the web page is transcoded or resized to fit the format of the web page and provided to other users over the network. For example, when a user presents their photo via a blog, the user edits the photo to upload it to the blog by reducing the size or capacity of the original photo.

However, according to conventional methods, content provided via the Internet may be different from the original content, and a person who wants to use the original content may have difficulty in using the original content.

Recently, various content receiving apparatuses have become available, including personal digital assistants (PDAs), smart phones, portable multimedia players (PMPs), mini-notebook computers, and the like. Since such content receiving devices operate differently due to differences in resolution or available codecs, it is necessary to take into account the performance of the devices when providing content to various types of content receiving devices.

Recently, with the increasing demand for better hardware performance and higher quality data, various types of devices (including cameras, camcorders, PCs, mini-notebooks, smart phones, and personal video recorders (Personal Video) Recorder, PVR)) is now able to handle larger sizes of data. Although advances in memory technology have increased the storage capacity of such devices, the size of the animation material or audio material is still relatively high given the limited data storage capacity of the device.

Embodiments of the present invention provide methods and apparatus for providing content over a network, wherein the convenience of accessing the original content is increased by providing location information of the original content, and methods and apparatus for receiving content are provided.

Embodiments of the present invention also provide methods and apparatus for modifying content to suit the performance of a content receiving device and providing the modified content.

According to an aspect of the present invention, a method for providing content includes: storing, by a first device, a first content at a location and storing a message, wherein the information defines storage in the first device Accessing the first device, transmitting, by the second device, the second content associated with the first content, and accessing the access information of the first content stored in the first device And identifying location information of the location to the third device, wherein the first content is stored at the location. In response to receiving a request for the location information and the access information based on accessing the first content stored by the first device, the first device is based on the first device being defined The information stored in the access right determines that the first content is accessible to a user of the third device.

According to one aspect of the present invention, a system for providing content is provided, comprising: a first device comprising at least one processor, the at least one processor configured to control the first device to store the first content a location and storing a message, wherein the information defines an access right to the first device stored in the first device; and a second device comprising at least one processor, the at least one processor Configuring to control the second device to transmit second content associated with the first content, accessing access information of the first content stored in the first device, identifying the location The location information is sent to the third device, wherein the first content is stored at the location. Wherein, in response to receiving a request for the location information and the access information based on accessing the first content stored by the first device, the first device is based on the definition The information of the access rights stored in a device determines that the first content is accessible to a user of the third device.

In accordance with an aspect of the present invention, a non-transitory computer readable recording medium is provided having embedded computer readable code that, when executed by a system, causes the system to perform a method of receiving content. The method includes: storing, by a first device, a first content at a location and storing a message, wherein the information defines an access right to the first device stored in the first device; Transmitting, by the second device, the second content associated with the first content, accessing access information of the first content stored in the first device, and identifying location information of the location to a third The device wherein the first content is stored at the location. Wherein, in response to receiving a request for the location information and the access information based on accessing the first content stored by the first device, the first device is based on the definition The information of the access rights stored in a device determines that the first content is accessible to a user of the third device.

The invention will now be described more fully hereinafter with reference to the accompanying drawings in which FIG.

1 is a schematic diagram illustrating a network operated content sharing system 100 in accordance with an embodiment of the present invention.

Referring to FIG. 1, the content sharing system 100 includes a content providing device 110, a storage device 120, and a content receiving device 130 that are interconnected via a predetermined network 140.

The content providing device 110 and the content receiving device 130 may be any of various devices supporting various types of wired or wireless networks 140, such as a portable multimedia player (PMP), an ultra mobile personal computer (Ultra Mobile Personal Computer, UMPC), laptop, mobile phone, digital camera, or personal computer (PC). Further, the content providing device 110, the storage device 120, and the content receiving device 130 may be client devices constituting a home network system connected to a controller such as a home gateway or a home server. For example, the content providing device 110, the storage device 120, and the content receiving device 130 may be mutually connected to the network 140 according to the Digital Living Network Alliance (DLNA) standard for sharing control of the home appliance. Connected device.

Network 140 includes one of a short-range network and a long-distance network. The network 140 can use a wireless internet solution (such as Bluetooth®, Wi-Fi, WiBro, Ultra Wide Band (UWB) or the like), or a wired internet solution (such as IEEE 1394, B). Too network or similar).

The storage device 120 is a network storage device for storing original content. The storage device 120 can be a storage device that can be accessed via a network. For example, the storage device 120 can be a Network Attached Storage (NAS). Although in the embodiment of FIG. 1, the storage device 120 storing the original content is separate from the content providing device 110, the storage device 120 can be integrated with the content providing device 110.

The content providing device 110 modifies the attributes of the original content stored in the storage device 120 to generate modified content, and generates location information of the storage device 120 as relay data.

The content receiving device 130 retrieves the location information of the storage device 120 storing the original content by the modified content and the relay data provided by the content providing device 110, and accesses the storage device 120 to receive the original content.

FIG. 2 is a block diagram illustrating the content providing apparatus 210 illustrated in FIG. 1 in accordance with an embodiment of the present invention.

Referring to FIG. 2, the content providing apparatus 210 includes an original content modifying unit 211, a relay material generating unit 212, and a content providing unit 213.

The original content modification unit 211 modifies the attributes of the original content stored in the storage device 120 to produce modified content, and the original content modification unit 211 is connected to the storage device 120 via the network (as illustrated in FIG. 1).

For example, when content is shared by uploading content via a web page (like a blog), the capacity of the additional file supported by the web page may be limited, or the upload may take a long time. Therefore, in order to efficiently provide the content to the web page, the original content modification unit 211 reduces the capacity of the original content. As another example, when a photographic image having high resolution is provided to a content receiving device 130 (such as a PMP or a mobile phone) having limited resolution, the original content modifying unit 211 considers the storage capacity or resolution of the content receiving device 130. The original image is resized to produce a modified image.

FIG. 3 is a diagram for explaining a process of modifying the attribute of the original content by the original content modification unit 211 illustrated in FIG. 2 according to an embodiment of the present invention.

Referring to FIG. 3, for example, when the resolution of the original image 310 corresponding to the original content is 2592×1944, the original content modification unit 211 resizes the original image 310 to generate a modified image, such as having an analysis of 1920×1980. The image 311 of the degree, the image 312 having a resolution of 1024×768, the image 313 having a resolution of 800×480, or the image 314 having a resolution of 400×240. The resolution of the image to be uploaded to the specific web page may be limited, and thus the original content modification unit 211 modifies the resolution of the original image to an appropriate resolution according to the image file resolution supported by the web page (the content to be provided thereto). Degrees (as illustrated in Figure 3) to produce a modified image.

If the storage capacity of the content receiving device 130 interconnected via the network 140 is insufficient or the resolution supported by the web page is lower than the resolution of the original content, the original content modifying unit 211 resizes the original content to generate a small-capacity content. . For example, when the content receiving device 130 is a mobile phone and the display of the mobile phone has a maximum resolution of 800×480, the original content modifying unit 211 resizes the original image so as to be the best for the display of the mobile phone. 480 images.

When the original content is a video file and the content receiving device 130 does not support a codec for encoding the video file, the original content modifying unit 211 converts and encodes the original video file to generate the image receiving device 130. Another video file in the video codec format.

Meanwhile, as described above, the content providing device 210 may allow the content of the content to be automatically modified according to the storage capacity or resolution of the content receiving device 130, or allow the user to select for modification via a user interface (not shown). The method of the properties of the original content. For example, the resolution information of the original image can be displayed through the user interface and the available resolution of the original image can be modified, and the user can select to modify the original image to have the desired resolution.

The relay data generating unit 212 generates relay data including location information of the storage device 120 storing the original content.

The content providing unit 213 provides the modified content and the relay material to the devices interconnected via the network.

4 is a diagram illustrating relay material in accordance with an embodiment of the present invention.

Referring to FIG. 4, the relay material according to the current embodiment of the present invention includes content relay data, device relay data, and user relay data.

The content relay material includes a content ID, original content location information, and original content access rights information.

The content ID is used to identify the type of content shared by the network. The original content location information is location information of the storage device 120 storing the original content, which may be in a Universal Resource Locator (URL) format. In detail, the original content location information includes a protocol and a storage path of the original content. For example, the original content location information may be expressed in a format such as "Protocol: Location of the storage device storing the original content." For example, if the location of the storage device 120 is represented as http://www.samsung.com/private_contents , the URL information may be added to the relay material as the original content location information.

The original content access rights information can be used to prevent the original content from being shared by any user. For example, the original content location information may be encoded, and the encoded key information used to decode the encoded original content location information may be original content access rights information.

Device relay data refers to information about the transfer history details when the modified content is transferred between different devices. For example, when the modified content is transmitted from the first device (device ID=1) to the third device (device ID=3) via the second device (device ID=2), the modified in the third device is modified. The device relay data of the content may include ID information of the path of the first device and the second device indicating that the content has passed. Therefore, content transfer paths and flows of invalid content can be tracked by using device relay data.

User relay data includes edit history and account information. The edit history contains information about the edited details of the modified content. For example, in the case of a size-adjusted image content, the edit history relay data may include information on the size of the original image and information on the modified details of the original image. In the case of the content of the converted video file, the edit history relay data may include codec information of the original video file. The account information represents the identification information of the user who provided the content. For example, in the case of providing content to a specific web bulletin board, the account information may be ID information of a user who uploads the corresponding content to the web bulletin board.

As described above, according to the current embodiment of the present invention, the content providing apparatus 210 includes location information of the original content of the modified content in the relay material, and thus other devices sharing the modified content via the network can be used by The original content is easily accessed following the location information of the data.

FIG. 5 is a block diagram illustrating a content receiving apparatus 500 in accordance with an embodiment of the present invention.

Referring to FIG. 5, the content receiving apparatus 500 includes a content receiving unit 510, an additional data capturing unit 520, an input unit 530, and a control unit 540.

The content receiving unit 510 is a communication module that performs data communication with other devices connected to the network and receives content shared by the network.

The additional data retrieval unit 520 retrieves additional information of the received content from the relayed content of the received content (as illustrated in Figure 4 above). The additional data retrieval unit 520 retrieves the location information of the original content from the relay data of the received content, and the user selects whether to receive the original content via the input unit 530 as necessary to allow the original content to be received. Control unit 540 controls the operation of each of the elements of content receiving device 500.

6A and 6B illustrate a process of receiving original content in accordance with an embodiment of the present invention. In FIG. 6A and FIG. 6B, the mobile phone 600 supporting the network connection is described as a content receiving device.

Referring to FIG. 6A, when the mobile phone 600 supporting the network connection is connected to a predetermined web page providing content via a network such as a Wi-Fi network, the content lists 621 to 624 appear on the display unit 610 of the mobile phone 600. Referring to FIG. 6B, one of the contents of the content lists 621 to 624 is selected by touching the desired content area on the mobile phone 600 via the input unit 630 or the mobile phone 600 supporting touch recognition. At the time, the information 625 for inquiring whether the user wants to receive the original content is displayed by the display unit 610, and the user selects whether to receive the original content via a selection interface 626 or 627.

When the user selects to receive the original content, the content receiving unit 510 requests the storage device storing the original content to transmit the original content by using the location information of the original content captured by the additional information capturing unit 520. The storage device determines whether the receiving device that has requested the delivery of the original content has an access right to the original content to determine whether to transfer the original content.

As described above, the original may be restricted, for example, by encoding the location information of the original content stored in the relay material and granting the encoded key that can be decoded only by the authorized user as the original content access rights information. Access to content. According to another example, the storage device storing the original content may have a list of user IDs or device IDs that have access rights to the original content; and when making a request to access the original content, the storage device may determine by Whether the request to access the original content is made by a user or device listed on the list allows or prohibits the request to thereby selectively provide the original content.

FIG. 7 is a flow chart illustrating a content providing method according to an embodiment of the present invention.

Referring to Figure 7, in step 710, the original content is stored in a predetermined storage device. As described above, the storage device may preferably be a storage device accessible via a network such as a NAS.

In step 720, the original content modification unit 211 of the content providing device 210 modifies the attributes of the original content to produce modified content. As described above, when uploading content to a web page, the capacity of the original content is reduced by considering the size of the additional file supported by the web page. Further, the content providing device 210 processes the original content in a format suitable for the content receiving device 220 in consideration of the storage capacity or resolution of the content receiving device 220 to generate modified content.

In step 730, the relay data generating unit 212 generates relay data including at least location information of the original content. The location information indicates the access path of the storage device storing the original content on the network, and may be in the URL format as described above.

In step 740, the modified content and the relay material are provided to other devices interconnected via the network by using the content providing unit 213.

FIG. 8 is a flowchart illustrating a content receiving method according to an embodiment of the present invention.

Referring to Figure 8, in step 810, predetermined content is provided by other means interconnected via the network using the content receiving unit 510.

In step 820, the additional data retrieval unit 520 retrieves the location information of the original content from the relay data of the original content.

In step 830, the content receiving unit 530 requests the storage device storing the original content to transmit the original content by using the captured location information of the original content, and receives the original content from the storage device.

9 is a flow chart illustrating a process of providing original content in a content sharing system in accordance with an embodiment of the present invention.

Referring to Figure 9, in step 941, the original content is stored in a network accessible storage device 920. Also, in step 942, the original content is provided to the content providing device 910. In step 943, information about the content receiving device 930, for example, the storage capacity or resolution of the content receiving device 930, is additionally provided to the content providing device 910.

In step 944, the content providing device 910 modifies the original content into a format suitable for the content receiving device 930 in consideration of the storage capacity or resolution information of the content receiving device 930. For example, the video content is resized in consideration of the storage capacity and resolution of the content receiving device 930, and the video content is converted and encoded in consideration of the playable codec of the content receiving device 930.

In step 945, the content providing device 910 generates relay data including location information of the storage device storing the original content. Next, the content providing device 910 provides the modified content and the relay material to the network-interconnected content receiving device 930.

In step 947, the content receiving device 930 retrieves the location information of the storage device storing the original content from the relay data. Next, in step 948, the content receiving device 930 requests the storage device 920 to provide the original content. In step 949, the storage device 920 compares the user ID or device ID that allows access to the original content with the user ID or device ID of the content receiving device 930 that has requested the original content to determine whether the request is from the original The content access device is made by the device. When the user ID or device ID is the user ID or device ID of the user or device having the appropriate access rights, the storage device 920 provides the original content to the content receiving device 930 in step 950.

According to the present invention, the convenience of accessing the original content can be increased by using the relay material of the content.

Figure 10 is a block diagram illustrating a network operated content sharing system in accordance with another embodiment of the present invention.

Referring to FIG. 10, the content sharing system includes a content providing device 1010 and a content receiving device 1030 that are interconnected via a predetermined network 1020.

The content providing device 1010 includes a content storage unit 1011, a content modification unit 1012, a device information storage unit 1013, and a communication unit 1014.

The content storage unit 1011 stores the content material to be provided to the content receiving device 1030.

The communication unit 1014 receives the device status information of the content receiving device 1030 from the content receiving device 1030, and stores the received device status information in the device information storage unit 1013.

11 is a view illustrating an example of device status information of a content receiving apparatus according to an embodiment of the present invention.

Referring to Figure 11, device status information includes information about device performance, such as the resolution and storage capacity of the content receiving device, and the audio/video format supported by the content receiving device or the like. As illustrated in FIG. 11, the device status information may additionally include user setting information preset by the user. For example, referring to status information from a first device in a content receiving device interconnected via a network, the resolution of the first device is 640×480, and its storage capacity (which relates to remaining capacity/total storage capacity) It is 20 GB out of a total of 500 GB. Moreover, the device status information of the first device indicates that the first device supports codecs of DivX, MPEG-4, and JPEG. Further, the user sets the resolution of 320×240 and the DivX codec to the attributes of the content to be received by the first device. The user setting information may be pre-stored in the device status information and then transmitted, or may be set by the user via the user interface 1033 of the content receiving device 1030 (as in FIG. 10).

Referring again to FIG. 10, the content modification unit 1012 obtains the performance and user setting information of the current device that will receive the content by using the status information stored in the device information storage unit 1013 of the plurality of devices, and the modification is stored in the content storage unit. The attributes of the content in 1011 are adapted to the content receiving device 1030. For example, assume that the first device illustrated in FIG. 11 is the current content receiving device, and the content being provided is a video file having a resolution of 800×600 and encoded by the H.264 codec. In this case, the content modification unit 1012 modifies the resolution of the video file stored in the content storage unit 1011 to 640×480 (according to the resolution of the first device) or to 320×240 (according to the user setting information). And converting or encoding the H.264 codec that is not supported by the first device into a DivX codec or MPEG4 codec supported by the first device or by converting the user into information according to user setting information The DivX codec is used to modify the properties of the video file. The content modified by the content modification unit 1012 is transmitted to the content receiving device 1030 interconnected via the network 1020 via the communication unit 1014. Still alternatively, the content modification unit 1012 may modify the attributes of the content in a format receivable by the content receiving device 1030 by resizing the content in consideration of the size of the content to be transmitted and the remaining storage space of the content receiving device 1030.

The content receiving device 1030 includes a communication unit 1031, a storage unit 1032, a user interface 1033, and a control unit 1034.

The user interface 1033 corresponds to an input unit that allows the user to display a list of content provided by the content providing device 1010 and select the content that the user wants to receive and the attributes of the content.

The communication unit 1031 transmits the content information selected by the user interface 1033 and the status information of the content receiving device 1030 to the content providing device 1010. The storage unit 1032 stores the content received from the content providing device 1010, and the control unit 1034 controls each of the elements of the content receiving device 1030.

12A through 12D illustrate a process of receiving content according to device state information of a content receiving device, according to an embodiment of the present invention. 12A and 12D illustrate the mobile communication terminal device 1200 as a content receiving device that supports network connection. Also, the video content is described as the content received by the mobile communication terminal device 1200 in FIGS. 12A to 12D.

Referring to FIG. 12A, when the mobile communication terminal 1200 supporting the network connection is connected to the content providing device via a network such as Wi-Fi, 3G, or the like, the content providing device provides the content to the display unit 1210 of the mobile communication terminal 1200. A list of contents from 1211 to 1214. The user selects one of the contents 1211 to 1214 by touching a region displaying the desired content via the predetermined input unit 1230 or when the mobile communication terminal 1200 supports touch recognition. Referring to FIG. 12B, when the user selects content, an input window 1215 of "Ask whether or not to receive content" is displayed on the display unit 1210, and the user selects whether the content will be received via the input unit 1230 or the selection interface 1216 or 1217.

Referring to FIG. 12C, when the user selects to receive content, an input window 1221 for selecting the resolution of the content to be received is displayed on the display unit 1210. The user selects the resolution of the content to be received via the input unit 1230 or by touching an area where the resolution is to be displayed.

Referring to FIG. 12D, after the user has selected the resolution of the content, the input window 1222 of the codec for selecting the content to be received is displayed on the display unit 1210. The user can select a codec of the content to be received via the input unit 1230 or by touching an area displaying the desired codec.

As illustrated in FIGS. 12A to 12D, the user setting information determined in accordance with the user's selection in the content receiving device is transmitted to the content providing device, and the content providing device can determine the content according to the user setting information as described above. The attribute is thereby provided to the content receiving device with the modified content. Also, when there is no user setting information or the user has automatically selected content delivery, the content providing device can modify the attributes of the content to suit the performance of the content receiving device to provide the modified content.

FIG. 13 is a flowchart illustrating a content providing method according to another embodiment of the present invention.

Referring to FIG. 13, in step 1310, the content providing device 1010 obtains device status information of the content receiving device 1030. As described above, the device status information may include the resolution available in the content receiving device 1030, the remaining capacity of the content receiving device 1030, and the file codec supported by the content receiving device 1030.

In step 1320, the content providing device 1010 modifies the attribute of the content provided to the content receiving device 1030 by using the device status information of the content receiving device 1030.

In step 1330, the content providing device 1010 provides the modified content to the content receiving device 1030 via the network.

FIG. 14 is a flowchart illustrating a content receiving method according to another embodiment of the present invention.

Referring to FIG. 14, in step 1410, the content to be received is selected among the content provided by the content providing device 1010 via the user interface 1033 of the content receiving device 1030.

In step 1420, the content receiving device 1030 transmits its device status information to the content providing device 1020.

In step 1430, the content providing device 1010 modifies the attributes of the content by using the received device status information to make it suitable for the content receiving device 1030 and transmits the modified content to the content receiving device 1030, and the content receiving device 1030 receives the Modify the content.

According to the present invention, by providing content suitable for the performance of the content receiving apparatus or user setting information, the compatibility of the content can be improved, and the usability of the content can be improved.

Hereinafter, an embodiment of a backup device according to the present invention will be described in detail. The term "storage device" as used herein refers to a dedicated storage device (such as a hard disk, a memory, a CD, a DVD, a Blu-ray, an HD-DVD, and a holographic recording medium) to another capable of storing a self-network connection. Devices that transmit data to devices (such as PCs, notebooks, mini-notebooks, camcorders, mobile communication terminals, Home Media Server (HMS), and personal video recorders (Personal Video Recorder) , PVR)) any data storage device.

15 is a diagram illustrating a data backup system 1500 for backing up data over a network in accordance with an embodiment of the present invention.

Referring to FIG. 15, the data backup system 1500 includes a data providing device 1510, a first storage device 1520, and a second storage device 1530 that are interconnected via a network 1540. Although not shown, in addition to the first storage device 1520 and the second storage device 1530, the data backup system 1500 may further include a plurality of storage devices.

The data providing device 1510 can be any of a variety of devices that support various types of wired or wireless networks 1540, such as PMPs, UMPCs, mini-notebooks, laptops, mobile phones, digital cameras, PVRs, HMS, or PC. The data providing device 1510, the first storage device 1520, and the second storage device 1530 may each be a client device for fabricating a home network system connected to a controller such as a home gateway or a home server. For example, the data providing device 1510, the first storage device 1520, and the second storage device 1530 may be devices interconnected via the network 1540 in accordance with the DLNA standard for controlling home appliances to share materials.

The network 1540 includes one of a short-range network and a long-distance network. The network 1540 can use a wireless internet solution (such as Bluetooth®, Wi-Fi, WiBro, UWB, or the like), or a wired internet solution (such as IEEE 1394, Ethernet, or the like). .

The first storage device 1520 and the second storage device 1530 store the data provided by the data providing device 1510. The first storage device 1520 and the second storage device 1530 can be any storage device, including dedicated storage devices (such as hard disks, memory, and NAS devices) and secondary storage devices with additional functions, which are stored and connected to Information transmitted by another device on the network via the network. Examples of auxiliary storage devices include PCs, notebook computers, mini-notebook computers, camcorders, mobile communication terminals, HMS, and PVR.

The data providing device 1510 transmits the data stored for backup to the first storage device 1520 and the second storage device 1530 via the network 1540. The data providing device 1510 can select a storage device for backing up data from the first storage device 1520 and the second storage device 1530 connected via the network 1540. Alternatively, the management server of the network 1540 can determine the availability of the first storage device 1520 and the second storage device 1530 to select a storage device for backing up data. An embodiment of backing up data when the first storage device 1520 is not available for storing backup data will now be described.

According to the present invention, if the first storage device 1520 is not available for backing up data (for example, when the remaining storage capacity of the first storage device 1520 is insufficient to store the data so that the first storage device 1520 cannot store the data transmitted from the data providing device 1510) The data backup system 1500 can store the data in the second storage device 1530 connected via the network 1540, and the first storage device 1520, for example, by deleting the data stored in the first storage device 1520. When it becomes available to back up the data, the data stored in the second storage device 1530 can be transferred to the first storage device 1520.

The data backup process can be controlled by the data providing device 1510, the management server of the network 1540, the first storage device 1520, and the second storage device 1530. Hereinafter, an embodiment of controlling the data backup process by the devices constituting the material backup system 1500 will be described in detail.

Figure 16 illustrates the structure of a material backup system 1600 in accordance with an embodiment of the present invention. Figure 16 also illustrates a block diagram of a server 1620 that controls the network of the data backup process. Referring to Figure 16, the data providing device 1610 can be a mobile communication terminal. Storage devices 1630, 1640, and 1650 can include a TV, a PC, and a PVR, respectively.

Referring to FIG. 16, the server 1620 includes a communication unit 1621, a buffer 1622, and a backup control unit 1623. The communication unit 1621 receives the backup data provided by the data providing device 1610 connected via the network. The received backup data can be temporarily stored in the buffer 1622. The backup control unit 1623 determines the availability of the storage devices 1630 through 1650 connected via the network for storing backup data. The storage devices 1630 through 1650 can autonomously inform the server 1620 about the availability of the backup data they are used to store. Alternatively, if the data providing device 1610 requests data backup, the backup control unit 1623 can determine the availability of the storage device 1630 to 1650 to store the backup data by requesting and receiving information about the availability of the storage devices 1630 to 1650 via the communication unit 1621.

The backup control unit 1623 of the server 1620 selects one of the storage devices 1630 to 1650 based on the availability of the backup data stored by the storage devices 1630 to 1650, and the backup data is transferred to the selected storage device.

As an example, assume that the first storage device 1630 is a central storage device that stores backup data transmitted over the network, and the remaining capacity is insufficient to store backup data. In this case, the backup control unit 1623 can select one of the second storage device 1640 and the third storage device 1650 that can be used to store the backup data via the network, and the control buffer 1622 and the communication unit 1621 will store The backup data in buffer 1622 is transferred to the selected storage device. Alternatively, instead of controlling the selection of one of the plurality of available storage devices and the transfer of the backup data, the backup control unit 1623 may divide the backup data based on the remaining capacity of the available storage devices and store the backup data in an available storage device in a distributed manner. in. For example, if the remaining capacity of the second storage device 1640 and the third storage device 1650 are 20 GB and 40 GB, respectively, and the backup data has a size of 60 GB, the backup control unit 1623 can control the backup operation to 60 GB. The backup data is divided into 20 GB and 40 GB data units and the divided backup data units are stored in a distributed manner in the second storage device 1640 and the third storage device 1650.

After completing the storage of the backup data, the backup control unit 1623 periodically communicates with the first storage device 1630 to periodically check the availability of the first storage device 1630 for storing the backup data. If the remaining capacity of the first storage device 1630 is increased, for example, by deleting the data stored in the first storage device 1630 to make it available for backup, the backup control unit 1623 can control the backup operation to be stored in the second storage. The backup data in the device 1640 or the third storage device 1650 is transferred to the first storage device 1630 and the backup data is stored in the storage device 1630. If the transfer of the backup data and the storage in the first storage device 1630 are completed, the backup temporarily stored in the second storage device 1640 or the third storage device 1650 due to insufficient remaining capacity of the first storage device 1630 may be deleted. data.

17 is a flow chart illustrating a data backup process performed by a web server of a data backup system in accordance with an embodiment of the present invention.

Referring to Figure 17, in step 1750, the data providing device 1710 provides backup data to the server 1720. The server 1720 can request information about the availability of the backup data stored by the first storage device 1730 and the second storage device 1740 connected via the network. Alternatively, in step 1751, the first storage device 1730 can autonomously inform the server 1720 that the first storage device 1730 is not available to store backup data. In step 1752, the second storage device 1740 can autonomously inform the server 1720 that the second storage device 1740 can be used to store backup data.

In step 1753, the server 1720 selects the storage device to store the backup data based on the availability of the first storage device 1730 and the second storage device 1740. The embodiment of Figure 17 assumes that the first storage device 1730 is not available to store backup data and the second storage device 1740 is available to store backup data.

In step 1754, the server 1720 transmits the backup data to the available second storage device 1740. In step 1755, the second storage device 1740 stores the transferred backup data.

After completing the storage of the backup data in the second storage device 1740, in step 1756, the server 1720 periodically requests to be informed about the availability of the first storage device 1730 for storing the backup data. In step 1757, if the remaining capacity of the first storage device 1730 is increased, for example, by deleting the data previously stored in the first storage device 1730, the first storage device 1730 notifies the server 1720: the first storage device 1730 Can be used to store this backup data.

If the first storage device 1730 is available to store backup data, then in step 1758, the server 1720 requests the second storage device 1740 to transfer the backup data to the first storage device 1730. In step 1759, the second storage device 1740 transmits the backup data to the first storage device 1730. In step 1760, the first storage device 1730 stores the transferred backup data. In step 1761, the backup data temporarily stored in the second storage device 1740 before being transferred to the first storage device 1730 is deleted from the second storage device 1740.

Figure 18 illustrates the structure of a data backup system in accordance with another embodiment of the present invention. Figure 18 is a block diagram of a data providing device 1800 for controlling data backup.

Referring to FIG. 18, the material providing device 1800 includes a communication unit 1810, a storage unit 1820, and a control unit 1830. The communication unit 1810 transmits the backup data to be stored in the storage unit 1820 to the plurality of storage devices 1850, 1860, and 1870. The control unit 1830 determines the availability of the storage devices 1850 through 1870 connected via the network for storing the backup data. The availability of stored backup data for storage devices 1850 through 1870 can be communicated in advance by storage devices 1850 through 1870. Alternatively, the control unit 1830 of the data providing device 1800 can determine the availability of the storage devices 1850 through 1870 by requesting and receiving information regarding the availability of the storage devices 1850 through 1870 via the communication unit 1810.

The control unit 1830 of the data providing device 1800 selects one of the storage devices 1850 to 1970 based on the availability of the storage devices 1850 to 1870 for storing backup data, and the backup data is transmitted to the selected storage device.

As described above, it is assumed that the first storage device 1850 is a central storage device for storing backup data transmitted over the network, and the remaining capacity is insufficient to store the backup data. In this case, the control unit 1830 can select one of the second storage device 1860 and the third storage device 1870 that can be used to store backup data via the network, and the control storage unit 1820 and the communication unit 1810 will be stored in The backup data in storage unit 1820 is transferred to the selected storage device. Alternatively, instead of controlling the selection of one of the plurality of available storage devices and the transfer of the backup data to the selected storage device, control unit 1830 may split the backup data based on the remaining capacity of the available storage devices and will back up in a decentralized manner. The data is stored in an available storage device.

After completing the storage of the backup data, the control unit 1830 periodically communicates with the first storage device 1850 to periodically check the availability of the first storage device 1850 for storing backup data. If the remaining capacity of the first storage device 1850 is increased, for example, by deleting the data stored in the first storage device 1850 to make it available for backup, the control unit 1830 can control the backup operation to be stored in the second storage device. The backup data in the 1860 or third storage device 1870 is transferred to the first storage device 1850 and the backup data is stored in the first storage device 1850. If the transfer of the backup data and the storage in the first storage device 1850 are completed, the backup data stored in the second storage device 1860 or the third storage device 1870 due to insufficient remaining capacity of the first storage device 1850 may be deleted. .

FIG. 19 is a diagram for explaining a data backup process by the material providing device 1910 of the material backup system according to an embodiment of the present invention. Referring to FIG. 19, in step 1941, the material providing device 1910 requests the first storage device 1920 to store backup data. In step 1942, the first storage device 1920 compares the size of the backup data with the available remaining capacity of the first storage device 1920 to check the availability of the backup data stored by the first storage device 1920. If the first storage device 1920 is not available to store the backup data due to, for example, insufficient remaining capacity, then in step 1943, the first storage device 1920 informs the data providing device 1910 that the first storage device 1920 is not available for storage. Backup data. In step 1944, the data providing device 1910 requests another storage device (ie, the second storage device 1930) connected via the network to store the backup data. In step 1945, the second storage device 1930 compares the size of the backup data with the available remaining capacity of the second storage device 1930 to check the availability of the second storage device 1930 for storing backup data. If the second storage device 1930 is available to store the backup data, then in step 1946, the second storage device 1930 informs the data providing device 1910 about the availability of the second storage device 1930 for storing the backup data. In step 1947, the material providing device 1910 transmits the backup data to the second storage device 1930. In step 1948, the second storage device 1930 stores the transferred backup data.

After completing the storage of the backup data in the second storage device 1930, in step 1949, the data providing device 1910 periodically requests to be informed about the availability of the backup storage data for the first storage device 1920. In step 1950, since the remaining capacity of the first storage device 1920 is increased, for example, by deleting the data stored in the first storage device 1920, the first storage device 1920 notifies the data providing device 1910 that the first storage device 1920 is available. Save backup data.

If the first storage device 1920 is available to store the backup data, in step 1951, the data providing device 1910 requests the second storage device 1930 to transfer the backup data to the first storage device 1920. In step 1952, the second storage device 1930 transmits the backup data to the first storage device 1920. In step 1953, the first storage device 1920 stores the transferred backup data. In step 1954, the backup data stored in the second storage device 1930 before being transferred to the first storage device 1920 is deleted from the second storage device 1930.

Figure 20 illustrates the structure of a data backup system in accordance with an embodiment of the present invention. Figure 20 also illustrates a block diagram of storage devices 2030 and 2040 that control the data backup process.

Referring to FIG. 20, the first storage device 2030 includes a first communication unit 2031, a first storage unit 2032, and a first control unit 2033. The second storage device 2040 includes a second communication unit 2041, a second storage unit 2042, and a second control unit 2043. Hereinafter, an embodiment in which the first storage device 2030 is not available for backing up data and the second storage device 2040 is available for backing up data will be described in detail.

The first communication unit 2031 communicates with the data providing device 2010 and the second storage device 2040 via the network 2020. If the data providing device 2010 requests data backup, the first control unit 2033 compares the available remaining capacity of the first storage unit 2032 with the size of the backup data and controls the first communication unit 2031 to notify the data providing device 2010: the first storage unit Is 2032 available to store backup data? As described in the previous embodiment, if the first storage unit 2032 has insufficient remaining capacity and is not available for storing backup data, the first communication unit 2031 informs the data providing device 2010 about the storage of the first storage unit 2032. The unavailability of backup data.

If the first storage device 2030 is not available for storing backup data, the data providing device 2010 requests the second storage device 2040 to store the backup data. The second control unit 2043 of the second storage device 2040 compares the available remaining capacity of the second storage unit 2042 with the size of the backup data and controls the second communication unit 2041 to inform the data providing device 2010 whether the second storage unit 2042 is available. Save backup data. As described in the previous embodiment, the fact that the second storage unit 2042 has sufficient remaining capacity to store backup data is communicated to the material providing device 2010. Upon informing the material providing device 2010 of the availability of the backup data stored by the second storage unit 2042, the material providing device 2010 transmits the backup data to the second communication unit 2041.

The backup data is transmitted via the second communication unit 2041 and stored in the second storage unit 2042. After completing the storage of the backup data, the second control unit 2043 periodically communicates with the first storage device 2030 to periodically check the availability of the first storage device 2030 for storing backup data. If the remaining capacity of the first storage device 2030 is increased, for example, by deleting the data stored in the first storage unit 2032 to make it available for backup, the second control unit 2043 may control the backup operation to be stored in the second The backup data in the storage unit 2042 is transferred to the first storage unit 2032 and the backup data is stored in the first storage device 2030. If the transfer of the backup data to the first storage device 2030 is completed, the second control unit 2043 deletes the backup data that has been stored in the second storage unit 2042. If the backup data stored in the second storage device 2040 is transmitted and stored in the first storage device 2030, the first control unit 2033 of the first storage device 2030 or the second control unit 2043 of the second storage device 2040 can control The communication unit informs the data providing device 2010 about the transfer of the backup data from the second storage device 2040 to the first storage device 2030 so that the data providing device 2010 checks the storage location of the backup data. The first control unit 2033 of the first storage device 2030 or the second control unit 2043 of the second storage device 2040 can provide the data stored in the first storage device 2030 or the second storage device 2040 to other storage devices connected via the network. A list to prevent overlapping storage of the same data in different storage devices connected via the network.

21 is a flow chart illustrating a data backup process performed by a storage device of a material backup system in accordance with an embodiment of the present invention.

Referring to FIG. 21, in step 2141, the data providing device 2110 requests the first storage device 2120 to store backup data. In step 2142, the first storage device 2120 compares the size of the backup data with the available remaining capacity of the first storage device 2120 to check the availability of the backup storage device 2120 for storing backup data. If the first storage device 2120 is unavailable due to, for example, insufficient remaining capacity to store the backup data, then in step 2143, the first storage device 2120 informs the data providing device 2110 that the first storage device 2120 is not available to store the backup. data. In step 2144, the data providing device 2110 requests another storage device (ie, the second storage device 2130) connected via the network to store the backup data. In step 2145, the second storage device 2130 compares the size of the backup data with the available remaining capacity of the second storage device 2130 to check the availability of the second storage device 2130 for storing backup data. If the second storage device 2130 is available to store the backup data, in step 2146, the second storage device 2130 informs the data providing device 2110 about the availability of the backup device 2130 for storing the backup data. In step 2147, the material providing device 2110 transmits the backup data to the second storage device 2130. In step 2148, the second storage device 2130 stores the transferred backup data.

After completing the storage of the backup data in the second storage device 2130, in step 2149, the second storage device 2130 periodically requests to be informed about the availability of the first storage device 2120 for storing backup data. In step 2150, since the remaining capacity of the first storage device 2120 is increased, for example, by deleting the data stored in the first storage device 2120, the first storage device 2120 notifies the second storage device 2130: the first storage device 2120 Can be used to store this backup data.

If the first storage device 2120 is available to store the backup data, then in step 2152, the second storage device 2130 transmits the backup data to the first storage device 2120. In step 2153, the first storage device 2120 stores the transferred backup data. In step 2154, the backup data stored in the second storage device 2130 before being transferred to the first storage device 2120 is deleted from the second storage device 2130.

FIG. 22 illustrates the structure of a material providing device 2200 according to an embodiment of the present invention.

Referring to FIG. 22, the data providing device 2200 includes a communication unit 2210, a storage unit 2220, a material conversion unit 2230, and a control unit 2240.

The communication unit 2210 transmits the backup data stored in the storage unit 2220 to the plurality of storage devices 2260, 2270, and 2280 via the network 2250.

The data providing device 2200 can back up the data to the storage devices 2260, 2270, and 2280 connected via the network 2250 in a manner similar to the data backup process of the data providing devices 1800 and 1910 described above with reference to FIGS. 18 and 19. Therefore, a detailed description of the data backup process performed by the material providing device 2200 will not be provided herein.

However, in the data providing device 2200 of FIG. 22, if the backup data is stored in a distributed manner to the storage of at least one of the storage devices 2260 to 2280 connected via the network 2250, the material conversion unit 2230 may generate information about the backup data. The relay data of the storage location and the original data stored in the storage unit 2220 can be stored via compression conversion.

For example, if the data providing device 2200 is a digital camera, after the process of storing the backup data of the original image data captured by the digital providing device 2200 in a distributed manner in at least one of the storage devices 2260 to 2280, the data is completed. The converting unit 2230 can convert the original image data into a thumbnail image, and store the converted thumbnail image instead of the original image in the storage unit 2220, and can delete the original image from the data providing device 2200. The data conversion unit 2230 can generate relay data from location information (such as a URL) of the storage device storing the original image data, and can store the relay data together with the thumbnail image. If the original image data is needed later, the original image data can be obtained from the storage device that backed up the original image data by using the thumbnail image of the original image data and the relay data (which corresponds to the location information of the original image data). Although the material conversion unit 2230 converts the backup material into a thumbnail form in the current embodiment, the material conversion unit 2230 can convert the original material in various forms, for example, by compression conversion to increase the utilization efficiency of the storage space of the storage unit 2220.

According to the present invention, when a storage device connected to the network is not available for storing backup data, the data can be efficiently backed up to other storage devices connected to the network. The convenience of accessing the original content can be improved by using the relay data of the original content. The compatibility of the content can be improved by providing content suitable for the performance of the content receiving device.

Embodiments of the present invention can be written as a computer program executable on a computer and can be implemented in a general-purpose digital computer that executes a program using a computer readable recording medium. Examples of the computer readable recording medium include a magnetic storage medium (for example, a ROM, a flexible disk, a hard disk, etc.), an optical recording medium (for example, a CD-ROM or a DVD), and the like.

Although the present invention has been particularly shown and described with reference to the embodiments of the present invention, it will be understood by those skilled in the art that the invention may be practiced without departing from the spirit and scope of the invention as defined by the appended claims. Various changes are made to the form and details. The examples should be considered in a descriptive sense only and not for purposes of limitation. Therefore, the scope of the invention is not to be limited by the description of the invention, but the scope of the appended claims, and all modifications within the scope of the invention are understood to be included in the invention.

100‧‧‧Content Sharing System
110‧‧‧Content providing device
120‧‧‧Storage device
130‧‧‧Content receiving device
140‧‧‧Network
210‧‧‧Content providing device
211‧‧‧ original content modification unit
212‧‧‧Relay data generation unit
213‧‧‧Content providing unit
310‧‧‧ original image
311‧‧‧Image with a resolution of 1920×1980
312‧‧‧Image with resolution of 1024×768
313‧‧‧Image with resolution of 800×480
314‧‧‧Image with 400×240 resolution
500‧‧‧Content receiving device
510‧‧‧Content receiving unit
520‧‧‧Additional data acquisition unit
530‧‧‧Input unit
540‧‧‧Control unit
600‧‧‧Mobile Phone
610‧‧‧ display unit
621‧‧‧Content list
622‧‧‧Content list
623‧‧‧Content list
624‧‧‧Content list
625‧‧‧Information for asking the user if they want to receive the original content
626‧‧‧Select interface
627‧‧‧Select interface
630‧‧‧ input unit
910‧‧‧Content providing device
920‧‧‧Storage device
930‧‧‧Content receiving device
1010‧‧‧Content providing device
1011‧‧‧Content storage unit
1012‧‧‧Content Modification Unit
1013‧‧‧Device Information Storage Unit
1014‧‧‧Communication unit
1020‧‧‧Network
1030‧‧‧Content receiving device
1031‧‧‧Communication unit
1032‧‧‧ storage unit
1033‧‧‧User interface
1034‧‧‧Control unit
1200‧‧‧Mobile communication terminal
1210‧‧‧Display unit
1211‧‧‧Content
1212‧‧‧Content
1213‧‧‧Content
1214‧‧‧Content
1215‧‧‧Input window
1216‧‧‧Select interface
1217‧‧‧Select interface
1221‧‧‧Input window
1222‧‧‧Input window
1230‧‧‧Input unit
1500‧‧‧ data backup system
1510‧‧‧Information providing device
1520‧‧‧First storage device
1530‧‧‧Second storage device
1540‧‧‧Network
1610‧‧‧ data providing device
1620‧‧‧Server
1621‧‧‧Communication unit
1622‧‧‧buffer
1623‧‧‧Backup control unit
1630‧‧‧Storage device
1640‧‧‧Storage device
1650‧‧‧Storage device
1710‧‧‧Information providing device
1720‧‧‧Server
1730‧‧‧First storage device
1740‧‧‧Second storage device
1800‧‧‧ data providing device
1810‧‧‧Communication unit
1820‧‧‧ storage unit
1830‧‧‧Control unit
1840‧‧‧Network
1850‧‧‧ storage device
1860‧‧‧Storage device
1870‧‧‧Storage device
1910‧‧‧Information providing device
1920‧‧‧First storage device
1930‧‧‧Second storage device
2010‧‧‧data providing device
2020‧‧‧Network
2030‧‧‧First storage device
2031‧‧‧First communication unit
2032‧‧‧First storage unit
2033‧‧‧First Control Unit
2040‧‧‧Second storage device
2041‧‧‧Second communication unit
2042‧‧‧Second storage unit
2043‧‧‧Second control unit
2110‧‧‧Information providing device
2120‧‧‧First storage device
2130‧‧‧Second storage device
2200‧‧‧ data providing device
2210‧‧‧Communication unit
2220‧‧‧ storage unit
2230‧‧‧Data Conversion Unit
2240‧‧‧Control unit
2250‧‧‧Network
2260‧‧‧Storage device
2270‧‧‧ storage device
2280‧‧‧Storage device

1 is a schematic diagram illustrating a network operated content sharing system in accordance with an embodiment of the present invention. FIG. 2 is a block diagram illustrating the content providing apparatus of FIG. 1 according to an embodiment of the present invention. 3 is a diagram for explaining a first process of modifying an attribute of an original content by the original content modification unit of FIG. 2 according to an embodiment of the present invention. 4 is a diagram illustrating relay material in accordance with an embodiment of the present invention. FIG. 5 is a block diagram illustrating a content receiving apparatus according to an embodiment of the present invention. 6A and 6B illustrate a process of receiving original content in accordance with an embodiment of the present invention. FIG. 7 is a flow chart illustrating a content providing method according to an embodiment of the present invention. FIG. 8 is a flowchart illustrating a content receiving method according to an embodiment of the present invention. 9 is a flow chart illustrating a process of providing original content in a content sharing system in accordance with an embodiment of the present invention. Figure 10 is a block diagram illustrating a network operated content sharing system in accordance with another embodiment of the present invention. 11 is a view illustrating device state information of a content receiving apparatus according to an embodiment of the present invention. 12A through 12D illustrate a process of receiving content according to device state information of a content receiving device, according to an embodiment of the present invention. FIG. 13 is a flowchart illustrating a content providing method according to another embodiment of the present invention. FIG. 14 is a flowchart illustrating a content receiving method according to another embodiment of the present invention. 15 is a diagram illustrating a data backup system for backing up data via a network in accordance with an embodiment of the present invention. Figure 16 illustrates the structure of a data backup system in accordance with an embodiment of the present invention. 17 is a flow chart illustrating an embodiment of a data backup method for backing up data to a web server of a data backup system. Figure 18 illustrates the structure of a data backup system in accordance with another embodiment of the present invention. Figure 19 is a flow chart illustrating a data backup process performed by a material providing device of a material backup system in accordance with an embodiment of the present invention. Figure 20 illustrates the structure of a data backup system in accordance with an embodiment of the present invention. 21 is a flow chart illustrating a data backup process performed by a storage device of a material backup system in accordance with an embodiment of the present invention. Figure 22 illustrates the structure of a material providing apparatus according to an embodiment of the present invention.

100‧‧‧Content Sharing System

110‧‧‧Content providing device

120‧‧‧Storage device

130‧‧‧Content receiving device

140‧‧‧Network

Claims (17)

A method of providing content, comprising: storing, by a first device, a first content at a location and storing a message, wherein the information defines access to the first device stored in the first device And transmitting, by the second device, the second content associated with the first content, accessing access information of the first content stored in the first device, and identifying location information of the location Giving a third device, wherein the first content is stored at the location; wherein the location information and the deposit based on receiving the first content stored by the first device are received in response Retrieving the information request, the first device determines that the first content is user accessible by the third device based on the information defining the access rights stored in the first device of. The method of providing content as described in claim 1, wherein the second content comprises reduced content, the reduced content having a resolution lower than a resolution of the first content. The method of providing content as described in claim 1, wherein the second content comprises reduced content, the reduced content having a file size smaller than a file size of the first content. The method of providing content as described in claim 1, wherein the location information comprises a Uniform Resource Locator (URL). A method of providing content as set forth in claim 1, wherein the request comprises a request to access the location indicated by the location information. A system for providing content, comprising: a first device, comprising at least one processor, the at least one processor configured to control the first device to store the first content in a location and to store a message, wherein The information defines an access right to the first device stored in the first device; and a second device comprising at least one processor configured to control the second The device, configured to transmit the second content associated with the first content, access access information of the first content stored in the first device, and identify location information of the location to the third device, where Storing the first content at the location, wherein in response to receiving the request for the location information and the access information based on accessing the first content stored by the first device, The first device determines that the first content is accessible to a user of the third device based on the information defining the access rights stored in the first device. A system for providing content as described in claim 6 wherein the quality of the second content is lower than the quality of the first content. A system for providing content as described in claim 6, wherein the resolution of the second content is lower than the resolution of the first content. The system for providing content according to claim 6, wherein the file size of the second content is smaller than the file size of the first content. A system for providing content as described in claim 6 wherein the location information comprises a Uniform Resource Locator (URL). A system for providing content as described in claim 6 wherein said request comprises a request to access said location indicated by said location information. A system for providing content as described in claim 6, wherein the location information is a Uniform Resource Locator (URL) to indicate a storage path of the first content at the first device. A non-transitory computer readable recording medium having an embedded computer readable code, which, when executed by a system, causes the system to perform a method of receiving content, the method comprising: storing, by the first device, a first Contenting at a location and storing a message, wherein the information defines an access right to the first device stored in the first device; and transmitting, by the second device, the first content a second content, accessing access information of the first content stored in the first device, and identifying location information of the location to a third device, wherein the first content is stored in the location Wherein in response to receiving a request for the location information and the access information based on accessing the first content stored by the first device, the first device is based on the definition The information of the access rights stored in a device determines that the first content is accessible to a user of the third device. The non-transitory computer readable recording medium according to claim 13, wherein the resolution of the second content is lower than the resolution of the first content. The non-transitory computer readable recording medium of claim 13, wherein the file size of the second content is smaller than the file size of the first content. The non-transitory computer readable recording medium of claim 13, wherein the location information comprises a Uniform Resource Locator (URL). The non-transitory computer readable recording medium according to claim 13, wherein the location information is a uniform resource locator (URL) to indicate storage of the first content in the first device. path.