Systems and methods for storing compressed data in cloud storage

• US 9,454,541 B2
• Filed: 07/24/2014
• Issued: 09/27/2016
• Est. Priority Date: 09/24/2013
• Status: Active Grant

• Current Assignee: Cyberlink Corporation
• Original Assignee: Cyberlink Corporation
• Inventors: Chou, Hung-Te
• Primary Examiner(s): Barot, Bharat N
• Application Number:
  US14/339,917
• Publication Number:
  US 20150089019A1
• Time in Patent Office: 796 Days
• Field of Search: 709201-203, 709217-219, 709246-247
• US Class Current: 1/1
• CPC Class Codes: G06F 16/178 Techniques for file synchronisation in file systems
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

Abstract

In a cloud computing device for synchronizing digital content with a client device, a first hash value and a second hash value in a media file are received from the client device, the media file comprising a plurality group of pictures (GOP) blocks and searching for payloads and headers based on the first hash value and the second hash value. Based on the searching step, edited portions of the media file are identified. For each edited portion, payload data is requested from the client device based on the first hash value and header data based on the second hash value. The payload data and the header data received from the client device are then stored.

Claims

1. A method implemented in a cloud computing device for synchronizing digital content with a client device, comprising:

receiving at least one of a first hash value and a second hash value in a media file from the client device, the media file comprising a plurality group of pictures (GOP) blocks;

searching for payloads and headers based on the first hash value and the second hash value;

based on the searching step, identifying edited portions of the media file;

for each edited portion, requesting, from the client device, payload data based on the first hash value and header data based on the second hash value; and

storing the payload data and the header data received from the client device.

2. The method of claim 1, further comprising generating a virtual file corresponding to the media file, the virtual file comprising pointers to the stored payload and pointers to the header information.

3. The method of claim 2, further comprising:

in response to receiving an access request from the client device for the media file, retrieving data based on the pointers in the virtual file; and

transmitting the retrieved data to the client device.

4. The method of claim 1, wherein requesting the payload data from the client device for each edited portion is performed in response to not finding the first hash value in the cloud computing device.

5. The method of claim 1, wherein requesting header data for each edited portion is performed in response to not finding the first hash value in the cloud computing device.

6. The method of claim 1, wherein the edited portions of the file are generated by the client device.

7. The method of claim 1, wherein the edited portion comprises at least one of the modified header information and the modified payload.

8. The method of claim 6, wherein the edited portions are generated by the client device by performing at least one of:

edited content in at least one GOP block; and

reordering GOP blocks.

9. A cloud-based storage system for synchronizing digital content with a client device, comprising:

at least one computing device including a processor;

a cloud storage device; and

an application executable in the at least one computing device, the application comprising;

a client interface configured to receive a first hash value and a second hash value in a media file from the client device, the media file comprising a plurality group of pictures (GOP) blocks; and

a content manager configured to search for payloads and headers based on the first hash value and the second hash value and based on the searching step, identify edited portions of the media file, the content manager being further configured to request from the client device, for each edited portion, payload data based on the first hash value and header data based on the second hash value, the content manager being further configured to store the payload data and the header data received from the client device.

10. The system of claim 9, further comprising a virtual file generator configured to generate a virtual file corresponding to the media file, the virtual file comprising pointers to the stored payload and pointers to the header information.

11. The system of claim 10, wherein in response to the client interface receiving an access request from the client device for the media file, the content manager retrieves data based on the pointers in the virtual file and the client interface transmits the retrieved data to the client device.

12. The system of claim 9, wherein the cloud storage device is implemented as a cache memory configuration.

13. The system of claim 9, wherein the content manager requests the payload data from the client device for each edited portion in response to not finding the first hash value in the cloud computing device.

14. The system of claim 9, wherein the content manager requests header data for each edited portion in response to not finding the first hash value in the cloud computing device.

15. The system of claim 9, wherein the edited portions of the file are generated by the client device.

16. The system of claim 9, wherein the edited portion comprises at least one of the modified header information and the modified payload.

17. A non-transitory computer-readable medium embodying a program executable in a cloud computing device for synchronizing digital content with a client device, comprising:

code that receives a first hash value and a second hash value in a media file from the client device, the media file comprising a plurality group of pictures (GOP) blocks;

code that searches for payloads and headers based on the first hash value and the second hash value;

code that identifies edited portions of the media file based on the search for payloads and headers;

code that requests, from the client device, for each edited portion, payload data based on the first hash value and header data based on the second hash value; and

code that stores the payload data and the header data received from the client device.

18. The computer-readable medium of claim 17, further comprising code that generates a virtual file corresponding to the media file, the virtual file comprising pointers to the stored payload and pointers to the header information.

19. The computer-readable medium of claim 18, further comprising code that retrieves data based on the pointers in the virtual file and transmits the retrieved data to the client device in response to receiving an access request from the client device for the media file.

20. The computer-readable medium of claim 17, wherein the payload data is requested from the client device for each edited portion in response to not finding the first hash value in the cloud computing device.

21. The computer-readable medium of claim 17, the header data is requested for each edited portion in response to not finding the first hash value in the cloud computing device.