Method of sharing contents by using personal cloud device, and electronic device and personal cloud system using the same

An electronic device comprising:

• a communication interface;
• a memory configured to store the contents;
• and
• a processor configured to:
• communicate with a personal cloud service to share contents with another device through the communication interface,
• control the communication interface to determine an upload condition of the electronic device if a new first content is added to a set first folder of the memory,
• transmit the first content to the personal cloud device if the upload condition satisfies a set condition,
• determine a download condition of the electronic device, and
• periodically request update information of a DataBase (DB) from the personal cloud device if the download condition of the electronic device satisfies a set condition,
• wherein the DB is configured to manage contents of the personal cloud device, and
• wherein the processor configured to request the update information based on content information and a time stamp that are recorded in the DB of the personal cloud device and that are lastly downloaded by the electronic device.

A method of sharing content in a personal cloud system comprising a first electronic device, a second electronic device, and a personal cloud device, the method comprising:

• connecting between the first electronic device, the second electronic device, and the personal cloud device;
• if a new first content is added to a set first folder of the first electronic device, determining an upload condition of the first electronic device through the first electronic device;
• if the upload condition satisfies a set condition, transmitting the first content from the first electronic device to the personal cloud device;
• storing the first content in the personal cloud device and updating information of a DataBase (DB);
• determining update information of the DB of the personal cloud device through the second electronic device to download the first content from the personal cloud device;
• determining a download condition of the second electronic device;
• if the download condition of the second electronic device satisfies a set condition, periodically requesting the update information of a DataBase (DB) from the personal cloud device, wherein the DB is configured to manage contents of the personal cloud device, and wherein the requesting further comprising requesting the update information based on content information and a time stamp that are recorded in the DB of the personal cloud device and that are lastly downloaded by the second electronic device;
• and
• storing the first content in a set second folder of the second electronic device.