Data synchronization method

• US 8,850,074 B2
• Filed: 01/17/2012
• Issued: 09/30/2014
• Est. Priority Date: 08/08/2011
• Status: Active Grant

• Current Assignee: Dimerco Express (U.S.A.) Corporation
• Original Assignee: Dimerco Express (U.S.A.) Corporation
• Inventors: Chen, Li Jen
• Primary Examiner(s): Joo, Joshua
• Application Number:
  US13/351,985
• Publication Number:
  US 20130042023A1
• Time in Patent Office: 987 Days
• Field of Search: 709/203, 709/248
• US Class Current: 709/248
• CPC Class Codes: G06F 9/54 Interprogram communication

Abstract

The present invention provides a data synchronization method applied to a host and at least a client. First, the host transmits a request for synchronization operation to the client. The client replies at least a piece of connection information to the host. The host judges if the connection information contains operation flags. If not, the host transmits a request for data transmission to the client for driving the client to transmit the corresponding data of the connection information to the host. When the host completes receiving the data, the host stores an operation flag to the connection information and transmits it to the client for overwriting the connection information in the client.

Claims

1. A data synchronization method, applied to a host and at least a client, and comprising steps of:

said host transmitting a request for synchronization operation to said client;

said client transmitting at least a piece of connection information to said host in response to the request;

said host judging whether said connection information contains an operation flag for driving said client to transmit data to said host, said data corresponding to said connection information, wherein if said connection information does not contain said operation flag, said host transmits a request for said data to said client, and when said host completes receiving said data, said host stores an operation flag to said connection information and transmitting said connection information containing said operation flag to said client; and

said client overwriting said connection information in the client with said connection information containing said operation flag received from said host.

2. The data synchronization method of claim 1, wherein when said host has not completed receiving said data corresponding to said connection information, stop writing said operation flag to said connection information, and said host continues to transmit said request for said data to said client for receiving said data corresponding to said connection information.

3. The data synchronization method of claim 1, wherein said connection information further includes a status flag, and said host further judges an update status of said data in said client according to said status flag.

4. The data synchronization method of claim 3, wherein said step of said host transmitting said request for said data to said client according to said connection information, said host further transmits said request for said data to said client according to said update status for driving said client to transmit said updated data to said host.

5. The data synchronization method of claim 1, wherein said connection information further comprises:

a content index corresponding to at least an initial address of all contents of said data;

a creation time label, storing a creation time of said data; and

a modification time label, storing a modification time of said data.

6. The data synchronization method of claim 1, and further comprises steps of:

backing up all synchronization data in said host to a backup host; and

connecting to said backup host using a control interface and inquiring backup data in said backup host.