Patent Application: US-201715398720-A

Abstract:
the present invention provides a cloud data storage system and the method thereof . the system according to the present invention can acquire the statuses of the data source and the client device to generate a usage status data , and the usage status data are generated according to the requirements of the current connection and the files to be accessed . the data source can actively search the usage status data and enable the connection . then , the system determines whether to access the digital content from the data source in order to transmit the digital content to the client device . the present invention provides a system and method which will not occupy the resources of the system , and will notify the client device that the physical storage device is in connection status and usable again after the physical storage device is temporarily disconnected or shut down .

Description:
in the following detailed description , for purposes of explanation , numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments . it will be apparent , however , that one or more embodiments may be practiced without these specific details . in other instances , well - known structures and devices are schematically shown in order to simplify the drawing . as shown in fig1 , the structure of a cloud data storage system is as follows : the cloud data transmission system 1 includes a client device access unit 101 and a data source access unit 102 . the client device access unit 101 and the data source access unit 102 connect to each other via the access status unit 103 . the client device access unit 101 can connect to an external client device via the network , and the data source access 102 can connect to an external data source via the network . the access status unit 103 can acquire the statuses of the data source 2 and the client device 3 to generate a usage status data according to the client device access unit 101 and the data source access unit 102 . regarding the cloud data storage method according to the present invention , the initial status step is that the client device asks for a file list from the data source via the system , and mainly includes the following steps , as shown in fig2 : step s 201 : an external client device connects to the system , and the system connects to the client device via a client device access unit ; step s 202 : the client device asks for a file list of a data source from the system ; step s 203 : an access status unit of the system asks for the file list form the data source via the data source access unit ; step s 204 : the data source transmits the file list to the access status unit of the system ; and step s 205 : the access status unit of the system transmits the file list to the client device . the client device also uses the same steps to update the file list from the data source via the system ; the system according to the present invention only provides an approach for the data source to provide the file list for the client device , but will not store the file list in order to achieve high information security . according to the cloud data storage method of the present invention , the client device can acquire the file list of the data source after step s 205 “ the access status unit transmits the file list to the client device ”. according to the present invention , the transmission connection between the data source and the system is not always enabled ; in other words , the data source will check the usage status data of the access status unit of the system by a predetermined time interval so as to determine whether to temporarily enable the transmission connection . if the client device asks for a file from the data source via the system but the transmission connection of the data source has yet to be enabled , the method proceeds to the following steps , as shown in fig3 : step s 301 : the client device connects to the system , and the system connects the client device access unit to the client device ; step s 302 : the client device asks for a file “ k ” of the file list from the system ; step s 303 : the transmission connection between the system and the data source has yet to be enabled , so the access status unit modifies the second indication flag of the usage status data as “ need to access the file k ”, and the access status unit modifies the third indication flag of the usage status data as “ need to enable the transmission connection ”; step s 304 : after a period of time , the data source actively searches the third indication flag of the usage status data from the system , and then checks the second indication flag ; step s 305 : the data source knows that the transmission connection should be enabled , and the data source actively enables the transmission connection with a data source access unit inside the system ; step s 306 : the access status unit modifies the first indication flag of the usage status data as “ in connection status ”; step s 307 : the data source transmits the file “ k ” to the access status unit via the data source access unit of the system ; after step s 307 , two conditions may take place , and the follow - up step of one of the two conditions is : step s 308 : if the client device has enabled the transmission connection , the access status unit of the system transmits the file “ k ” to the client device via the client device access unit . step s 309 : if the client device has yet to enable the transmission connection , the access status unit of the system transmits a file reception notification to the client device via a remote notification approach ; and step s 310 : the client device enables the transmission connection with the client device access unit after receiving the file reception notification ; then , the access status unit of the system transmits the file “ k ” to the client device via the client device access unit . besides , after step s 307 , the data source disables the transmission connection if the data source has yet to receive the access request within a predetermined time period after the data source enables the transmission connection . according to the cloud data storage method of the present invention , if the status of the first indication flag is “ in connection status ”, it means that the transmission connection between the data source and the system is enabled . when the client device asks for another file from the data source via the system , the method will proceed to the following major steps , as shown in fig4 : step s 401 : the client device requests for a file “ t ” of the file list from the system ; step s 402 : the access status unit of the system checks the first indication flag , and the first indication flag shows “ in connection status ”; step s 403 : the access status unit of the system requests the file “ t ” from the data source via the data source access unit . step s 404 : the data source transmits the file “ t ” to the access status unit via the data source access unit of the system ; and step s 405 : the access status unit of the system transmits the file “ t ” to the client device via the client device access unit . according to the cloud data storage method of the present invention , if the client device wants to upload a file to the data source via the system , the steps are as follows ; please refer to fig5 : step s 501 : the client device connects to the system , and the access status unit of the system connects to the client device via the client device access unit ; step s 502 : the client device uploads a file “ m ” to the access status unit of the system via the client device access unit ; step s 503 : the access status unit checks the first indication flag ; step s 503 means the system is checking whether the transmission connection of the data source is enabled , so which can be classified into two conditions ; the follow - up steps of one of the two conditions are as follows : step s 504 : the first indication flag shows that the transmission connection has been enabled ; and step s 505 : the access status unit of the system uploads the file “ m ” to the data source via the data source access unit . the follow - up steps of the other of the two conditions are as follows : step s 506 : the first indication flag shows that the transmission connection has yet to be enabled ; step s 507 : the access status unit of the system modifies the third indication flag as “ need to enable the transmission connection ”; step s 508 : the data source actively checks the third indication flag of the usage status data from the access status unit of the system ; step s 509 : after the data source knows it is necessary to enable the transmission connection , the data source actively enables the transmission connection with the data source access unit ; and step s 510 : the access status unit uploads the file “ m ” to the data source via the data source access unit of the system . the step is for the client device to upload a file to the data source via the system according to the cloud data storage method of the present invention . if the data source has yet to receive the access request within a predetermined time period after the data source enables the transmission connection , the data source disables the transmission connection . it will be apparent to those skilled in the art that various modifications and variations can be made to the disclosed embodiments . it is intended that the specification and examples be considered as exemplary only , with a true scope of the invention being indicated by the following claims and their equivalents . according to the above exemplary embodiments and system structure , the present invention provides a data storage system and method which will not occupy the resources of the system , and the storage device will actively make a request to connect to the system . the present invention further provides a system and method which can avoid additional cost because users do not need to purchase physical storage devices . the present invention also provides a system and method which will notify the client device that the physical storage device is in connection status and usable again after the physical storage device is temporarily disconnected or shut down , and support the transmission resuming function . in summation of the description above , the present invention can provide unpredictable technical effects which the prior art cannot provide , so completely conforms to the novelty and the obviousness regulated by patent act . thus , applicant files the invention application according to patent act ; 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