METHOD, APPARATUS AND SYSTEM FOR AUTO-SYNCHRONIZATION OF COMPRESSED CONTENT FILES

• US 20140059165A1
• Filed: 08/13/2013
• Published: 02/27/2014
• Est. Priority Date: 08/24/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Yongsu
• Granted Patent: US 9,614,893 B2
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: G06F 16/176 Support for shared access to files; File sharing support
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]

Abstract

An auto-synchronization method, apparatus, and system for synchronizing compressed content file automatically in such a way of tracing the modification history of source files of the compressed content file and synchronizing the modified source files selectively are provided. The portable device includes a radio communication unit configured to connect to the synchronization server to transmit and receive data related to the compressed content file, a storage unit configured to store at least one of the compressed content file, compressed content file information, and source file information related to source files constituting the compressed content file, and a control unit configured to detect a synchronization request signal generated by an event modifying the compressed content file, extract at least one modified first source file from the compressed content file based on the source file information, and synchronize the extracted first source file with a second source file matching among source files stored in a synchronization server.

Claims

1. A portable device for synchronizing a compressed content file containing multiple source files, the device comprising:

a radio communication unit configured to connect to the synchronization server to transmit and receive data related to the compressed content file;

a storage unit configured to store at least one of the compressed content file, compressed content file information, and source file information related to source files constituting the compressed content file; and

a control unit configured to detect a synchronization request signal generated by an event modifying the compressed content file, extract at least one modified first source file from the compressed content file based on the source file information, and synchronize the extracted first source file with a second source file matching among source files stored in a synchronization server.

2. The device of claim 1, wherein the compressed content file information comprises at least one of a compressed content file time stamp, a file name, a file identifier, and a unique synchronization key, and the source file information of each source file comprises at least one of a compressed content file identifier, a source file path, and checksum information.

3. The device of claim 2, wherein the control unit is further configured to compare the compressed content file information stored in the synchronization server and the storage unit to determine a modified compressed content file, determine whether the compressed content file is modified in the portable device or the synchronization server, and control uploading of the first source files to the synchronization server when the compressed content file is modified in the portable device and downloading only the second source files from the synchronization server when the compressed content file is modified in the synchronization server.

4. The device of claim 3, wherein the control unit is further configured to control decompressing of the compressed content file into the source files in upload synchronization, extract the modified first source files among the decompressed source files, and delete, when the synchronization completes, the decomposed source files in a temporary storage.

5. The device of claim 3, wherein the control unit is further configured to control downloading of the modified second source files and source file information related to the modified second source files from the synchronization server, decompress the compressed content file into the source files in a temporary storage, update modified second source files among the decompressed source files, recompress the source files including the updated source files into the compressed content file, and delete the second source files from the temporary storage.

6. The device of claim 1, wherein the control unit is further configured to extract the at least one modified source file using a checksum method.

7. A synchronization method of a portable device for synchronizing a compressed content file, the method comprising:

detecting a synchronization request signal generated by an event modifying the compressed content file;

extracting at least one modified first source file based on source file information related to source files constituting the compressed content file in response to the synchronization request signal; and

synchronizing the extracted first source file with a second source file matching among source files stored in a synchronization server.

8. The method of claim 7, wherein the detecting of the synchronization request signal comprises:

receiving a server compressed content file information from the synchronization server;

comparing a local compressed content file information stored in the portable device with the server compressed content file information;

determining a modified compressed content file based on the comparison result; and

determining whether the modified compressed content file is being uploaded or downloaded.

9. The method of claim 7, wherein the extracting of the at least one modified source file comprises:

decomposing the modified compressed content file into the source files in a temporary storage;

extracting the modified first source files among the decomposed source files; and

deleting, when the synchronization completes after the extracting of the modified first source files, the decomposed source files in the temporary storage.

10. The method of claim 8, wherein the determining of whether the modified compressed content file is being uploaded or downloaded comprises:

determining, when the modified compressed content file is being uploaded, whether the modified compressed content file exists in the synchronization server;

decomposing, when the modified compressed content file does not exist in the synchronization server, the modified compressed content file into the first source files and source file information related to the first source files in a temporary storage;

uploading all the decomposed source files and corresponding source file information to the synchronization server; and

uploading, when the modified compressed content file exists in the synchronization server, only the modified first source files and source file information related to the first source files to the synchronization server.

11. The method of claim 8, wherein the determining of whether the modified compressed content file is being uploaded or downloaded comprises:

determining, when the modified compressed content file is being downloaded, whether the modified compressed content file exists in the storage unit;

downloading, when the modified compressed content file does not exist in the storage unit, all second source files constituting the compressed content file and source file information related to the second source files from the synchronization server;

compressing the downloaded second source files into a local compressed content file;

downloading, when the modified compressed content file exists in the storage unit, at least one modified second source file and source file information related to the second source file from the synchronization server;

decomposing the local compressed content file stored in the storage unit into the source files in a temporary storage;

updating the decomposed source files with the downloaded second source files; and

recompressing the updated source files into the local compressed content file.

12. The method of claim 8, wherein the extracting of the at least one modified first source file comprises extracting the modified first source file using a checksum method.

13. The method of claim 8, wherein the compressed content file information comprises at least one of a compressed content file stamp, a file name, a file identifier, and a unique synchronization key, and the source file information of each source file comprises at least one of a compressed content file identifier, a source file path, and checksum information.

14. A synchronization system for synchronizing a compressed content file with a synchronization server, the system comprising:

a portable device configured to store at least one of source files information related to source files constituting a compressed content file, extract modified first source files from the compressed content file based on the source file information, and synchronize the extracted first source file among the compressed content file by updating only the modified source files; and

a synchronization server configured to store at least one source file constituting the compressed content file and source file information related to the source file and compressed content file information, provide the device with a list of modified second source files information, and synchronize the compressed content file by updating only the modified second source files with the first files stored in the portable device.

15. The system of claim 14, wherein the compressed content file information comprises at least one of a compressed content file time stamp, a file name, a file identifier, and a unique synchronization key, and the source file information of each source file comprises at least one of a compressed content file identifier, a source file path, and checksum information.

16. The system of claim 14, wherein the portable device is further configured to extract the modified source file using a checksum method.