CN104778129B - Method and device for realizing virtual storage of mobile terminal - Google Patents
Method and device for realizing virtual storage of mobile terminal Download PDFInfo
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- CN104778129B CN104778129B CN201410015385.9A CN201410015385A CN104778129B CN 104778129 B CN104778129 B CN 104778129B CN 201410015385 A CN201410015385 A CN 201410015385A CN 104778129 B CN104778129 B CN 104778129B
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- G06F16/10—File systems; File servers
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- G06F16/188—Virtual file systems
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Abstract
The invention discloses a method and a device for realizing virtual storage of a mobile terminal, which relate to the technical field of wireless communication, and the method comprises the following steps: the method comprises the steps that a request for establishing cloud storage is sent to a cloud storage space, so that cloud storage space information of the cloud storage space is obtained; according to the obtained cloud storage space information, a local storage address mapping table comprising a local storage initial address, cloud storage space capacity and cloud storage file information is established; the mobile terminal uploads the written data file to the cloud storage space for storage, and updates the data file of the local storage address mapping table; and finding out the data file read out by the mobile terminal from the local storage address mapping table, and downloading the read data file through the cloud storage space. According to the invention, the address mapping table of the local storage space is established by the address of the cloud storage space, and the data reading and writing operation is carried out in the cloud storage space, so that the user experience is improved.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for implementing virtual storage of a mobile terminal.
Background
The Android intelligent mobile terminal uses an SD (Secure Digital Memory Card) Card as a standard accessory, and many applications in the mobile terminal, such as photographing, video recording, etc., require the SD Card to complete a predetermined function. However, with the continuous improvement of the performance of the mobile terminal, the capacity of the application of the mobile terminal is larger and larger, and the limited storage space of the SD card is insufficient. In addition, the SD card is not sold with the mobile terminal as a standard when the mobile terminal leaves the factory, and the SD card needs to be purchased by the user.
At present, the mainstream scheme of the virtual SD card is to divide a storage area from the storage space of the mobile terminal, and modify the partition table file, so as to implement the virtual SD card. However, this method cannot fundamentally solve the problem of insufficient space of the SD card.
Therefore, in order to solve the problem that the capacity of the SD card is insufficient or some applications cannot be used due to the lack of the SD card, the invention provides a method and a device for realizing virtual storage of a mobile terminal.
Disclosure of Invention
The invention aims to provide a method and a device for realizing virtual storage of a mobile terminal, which enable the mobile terminal to use a cloud storage space as a local SD card, thereby solving the problems that the capacity of the SD card is insufficient or certain applications cannot be used due to the lack of the SD card in the prior art.
According to an aspect of the present invention, there is provided a method for implementing virtual storage of a mobile terminal, including the following steps:
the method comprises the steps that a request for establishing cloud storage is sent to a cloud storage space, so that cloud storage space information of the cloud storage space is obtained;
according to the obtained cloud storage space information, a local storage address mapping table comprising a local storage initial address, cloud storage space capacity and cloud storage file information is established;
the mobile terminal uploads the written data file to the cloud storage space for storage, and updates the data file of the local storage address mapping table; and
and finding out the data file read out by the mobile terminal from the local storage address mapping table, and downloading the read data file through the cloud storage space.
Preferably, the obtaining of the cloud storage space information of the cloud storage space by initiating a request for establishing cloud storage to the cloud storage space includes:
the method comprises the steps of receiving a result message returned by a cloud storage space by initiating a request for establishing cloud storage to the cloud storage space;
and when the result message is a permission authentication message, obtaining the cloud storage space information of the cloud storage space.
Preferably, the cloud storage space information includes cloud storage space address information, cloud storage space capacity information, and file information stored in the cloud space;
the file information stored in the cloud space comprises file name information, file capacity information and file storage position information.
Preferably, the uploading, by the mobile terminal, the written data file to the cloud storage space for storage, and updating the data file of the local storage address mapping table includes:
the mobile terminal uploads the written data file to the cloud storage space;
after the cloud storage space receives and stores the uploaded written data file, updating the data file of the local storage address mapping table;
and after updating the data file of the local storage address mapping table, sending a notification request for storing the written data to the mobile terminal.
Preferably, the finding out the data file read by the mobile terminal from the local storage address mapping table, and the downloading the read data file through the cloud storage space includes:
finding out the data file read by the mobile terminal from the local storage address mapping table according to the request for reading the data file sent by the mobile terminal;
sending a downloading request for downloading the read data file to the cloud storage space;
and after receiving the downloading request, the cloud storage space downloads the read data file and sends the downloaded read data file to the mobile terminal.
According to another aspect of the present invention, there is provided an apparatus for implementing virtual storage of a mobile terminal, including:
the cloud storage space information acquisition module is used for initiating a request for establishing cloud storage to a cloud storage space to obtain cloud storage space information of the cloud storage space;
the local storage address mapping table establishing module is used for establishing a local storage address mapping table comprising a local storage initial address, cloud storage space capacity and cloud storage file information according to the obtained cloud storage space information;
the read-write module is used for uploading the written data file to the cloud storage space for storage by the mobile terminal and updating the data file of the local storage address mapping table; and finding out the data file read out by the mobile terminal from the local storage address mapping table, and downloading the read data file through the cloud storage space.
Preferably, the module for acquiring cloud storage space information includes:
the request unit is used for initiating a request for establishing cloud storage to a cloud storage space and receiving a result message returned by the cloud storage space;
and the acquisition unit is used for acquiring the cloud storage space information of the cloud storage space when the result message is a permission authentication message.
Preferably, the cloud storage space information includes cloud storage space address information, cloud storage space capacity information, and file information stored in the cloud space;
the file information stored in the cloud space comprises file name information, file capacity information and file storage position information.
Preferably, the read/write module includes a write unit, wherein the write unit includes:
the uploading subunit is used for uploading the written data file to the cloud storage space by the mobile terminal;
the updating subunit is used for updating the data file of the local storage address mapping table after the cloud storage space receives and stores the uploaded written data file;
and the sending subunit is configured to send a notification request for storing the written data to the mobile terminal after updating the data file in the local storage address mapping table.
Preferably, the read-write module further includes a readout unit, wherein the readout unit includes:
the searching subunit is used for finding out the data file read by the mobile terminal from the local storage address mapping table according to the request for reading the data file sent by the mobile terminal;
the downloading subunit is used for sending a downloading request for downloading the read data file to the cloud storage space;
and the sending subunit is configured to download the read data file after the cloud storage space receives the download request, and send the downloaded read data file to the mobile terminal.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the address mapping table of the local storage space is established by the address of the cloud storage space, and the data reading and writing operation is carried out in the cloud storage space, so that the user experience is improved.
Drawings
Fig. 1 is a flowchart of an implementation method of virtual storage of a mobile terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an apparatus for implementing virtual storage of a mobile terminal according to an embodiment of the present invention;
fig. 3 is a block diagram of an apparatus for implementing virtual storage of a mobile terminal according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a method for establishing a virtual SD card by a mobile terminal according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a virtual SD card controller acquiring a cloud storage space according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a mobile terminal writing a file to a virtual SD card according to an embodiment of the present invention;
fig. 7 is a schematic diagram of the mobile terminal opening a file stored in a virtual SD card according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 shows a flowchart of a method for implementing virtual storage of a mobile terminal according to an embodiment of the present invention, as shown in fig. 1, including the following steps:
step S101, a request for establishing cloud storage is sent to a cloud storage space to obtain cloud storage space information of the cloud storage space;
step S102, establishing a local storage address mapping table comprising a local storage initial address, cloud storage space capacity and cloud storage file information according to the obtained cloud storage space information;
step S103, the mobile terminal uploads the written data file to the cloud storage space for storage, and updates the data file of the local storage address mapping table; and
and step S104, finding out the data file read out by the mobile terminal from the local storage address mapping table, and downloading the read data file through the cloud storage space.
The method for obtaining the cloud storage space information of the cloud storage space by initiating the request for establishing the cloud storage to the cloud storage space comprises the following steps: the method comprises the steps of receiving a result message returned by a cloud storage space by initiating a request for establishing cloud storage to the cloud storage space; and when the result message is a permission authentication message, obtaining the cloud storage space information of the cloud storage space.
Specifically, the cloud storage space information includes cloud storage space address information, cloud storage space capacity information, and file information stored in the cloud space; the file information stored in the cloud space comprises file name information, file capacity information and file storage position information.
The mobile terminal uploads the written data file to the cloud storage space for storage, and updates the data file of the local storage address mapping table, wherein the data file comprises the following data files: the mobile terminal uploads the written data file to the cloud storage space; after the cloud storage space receives and stores the uploaded written data file, updating the data file of the local storage address mapping table; and after updating the data file of the local storage address mapping table, sending a notification request for storing the written data to the mobile terminal.
The invention finds out the data file read by the mobile terminal from the local storage address mapping table, and the downloading of the read data file through the cloud storage space comprises the following steps: finding out the data file read by the mobile terminal from the local storage address mapping table according to the request for reading the data file sent by the mobile terminal; sending a downloading request for downloading the read data file to the cloud storage space; and after receiving the downloading request, the cloud storage space downloads the read data file and sends the downloaded read data file to the mobile terminal.
Fig. 2 is a schematic diagram of an apparatus for implementing virtual storage of a mobile terminal according to an embodiment of the present invention, and as shown in fig. 2, a module 201 for obtaining cloud storage space information is used to obtain cloud storage space information of a cloud storage space by initiating a request for establishing cloud storage to the cloud storage space; a local storage address mapping table establishing module 202, configured to establish a local storage address mapping table including a local storage start address, a cloud storage space capacity, and cloud storage file information according to the obtained cloud storage space information; the read-write module 203 is used for the mobile terminal to upload the written data file to the cloud storage space for storage, and update the data file of the local storage address mapping table; and finding out the data file read out by the mobile terminal from the local storage address mapping table, and downloading the read data file through the cloud storage space.
The module 201 for acquiring cloud storage space information includes: the request unit is used for initiating a request for establishing cloud storage to a cloud storage space and receiving a result message returned by the cloud storage space; and the acquisition unit is used for acquiring the cloud storage space information of the cloud storage space when the result message is a permission authentication message.
The cloud storage space information comprises cloud storage space address information, cloud storage space capacity information and file information stored in a cloud space; the file information stored in the cloud space comprises file name information, file capacity information and file storage position information.
Specifically, the read/write module 203 includes a write unit and a read unit, where the write unit includes: the uploading subunit is used for uploading the written data file to the cloud storage space by the mobile terminal; the updating subunit is used for updating the data file of the local storage address mapping table after the cloud storage space receives and stores the uploaded written data file; a sending subunit, configured to send a notification request for storing the write data to the mobile terminal after updating the data file in the local storage address mapping table; and the readout unit includes: the searching subunit is used for finding out the data file read by the mobile terminal from the local storage address mapping table according to the request for reading the data file sent by the mobile terminal; the downloading subunit is used for sending a downloading request for downloading the read data file to the cloud storage space; and the sending subunit is configured to download the read data file after the cloud storage space receives the download request, and send the downloaded read data file to the mobile terminal.
Fig. 3 is a block diagram illustrating a structure of an apparatus for implementing virtual storage of a mobile terminal according to an embodiment of the present invention, and as shown in fig. 3, the apparatus includes a cloud storage space, a virtual SD card controller, and the mobile terminal. The virtual SD card controller comprises a cloud storage communication module, a cloud storage management module, an address mapping table management module and a mobile terminal communication module. The cloud storage communication module is mainly responsible for communication with the cloud storage space and the mobile terminal communication module; the cloud information management module manages one or more sets of user names and passwords and one or more cloud storage spaces, authenticates through the cloud storage communication module, acquires the read-write permission of the cloud storage space, and is responsible for managing and maintaining identity authentication information of cloud storage, corresponding cloud storage space address information and file information of the cloud storage; the address mapping table management module is mainly responsible for converting storage addresses of a dispersed cloud space into a local continuous local storage address mapping table, synchronizing file information stored in the cloud space into the local storage address mapping table, and making corresponding identification in the local storage address mapping table according to the file capacity in the file information; the mobile terminal communication module is mainly responsible for communication with the mobile terminal, and comprises the steps of initiating a notice of inserting a new SD device and responding to the read-write operation of the mobile terminal on the file in the virtual SD device.
The virtual SD card controller can manage one or more sets of user names and passwords and one or more cloud storage spaces through the cloud storage management module, carry out authentication through the cloud storage communication module and acquire the read-write permission of the storage space.
After the virtual SD card controller acquires one or more cloud storage spaces, the virtual SD card controller can combine the cloud storage spaces into one or more continuous local storage address mapping tables according to a strategy set by a user. And the local storage space of the local storage address mapping table corresponds to the cloud storage space address.
After the virtual SD card controller finishes arranging the cloud storage space, a local storage address mapping table is created, and the mobile terminal is informed to insert new SD card equipment.
After receiving the read-write instruction sent by the mobile terminal, the virtual SD card controller of the invention makes corresponding action to the cloud storage space according to the storage address related to the specific read-write instruction.
Fig. 4 is a schematic diagram illustrating a method for establishing a virtual SD card by a mobile terminal according to an embodiment of the present invention, where as shown in fig. 4, a cloud information management module sends a set user name, a set password, and a set cloud storage space address to a cloud storage communication module, and the cloud storage communication module authenticates a cloud storage space and obtains a read-write permission of the cloud storage space and cloud storage space information. The cloud storage space information at least comprises an address for storing data, the capacity of the cloud storage space and stored data information. After the cloud storage space information is obtained by the cloud storage communication module, the information is sent to the cloud information management module, and the cloud information management module updates local cloud storage information and sends the information to the address mapping table management module. The address mapping table management module records the storage addresses of the cloud space into one or more continuous local storage address tables, establishes a local storage address mapping table and synchronizes the file storage condition of the cloud space into the local storage address mapping table. And after the local storage address mapping table is created, the mobile terminal communication module is informed to initiate broadcasting and insert a new SD card device, and is responsible for communicating with the mobile terminal to finish the access of the mobile terminal to the virtual SD card.
Fig. 5 shows a flowchart of acquiring a cloud storage space by a virtual SD card controller according to an embodiment of the present invention, and as shown in fig. 5, a user name/password of the cloud storage space and a corresponding cloud storage space address are first set in the controller, and the cloud storage space is accessed according to the cloud storage space address and read-write permission is acquired. And the virtual SD card controller acquires the information of the cloud space and establishes a local storage address mapping table required by the virtual SD card for the storage address of the cloud space.
The address mapping table management module of the virtual SD card controller locally establishes a local storage address mapping table after acquiring the storage address of the cloud space. Assuming that the strategy adopted by the user is to integrate the storage spaces into a virtual SD card, the local storage address mapping establishes a local storage address mapping table with continuous addresses, so that the files stored in the cloud spaces are sequentially mapped in the local storage address mapping table. As shown in table 1, the cloud storage management module integrates information tables of respective cloud storage spaces.
Table 1: information table of cloud storage space
As shown in table 2, the address mapping table management module creates a local storage address mapping table according to the information of the cloud storage management module. And the files in the cloud storage spaces are continuously stored in the local storage address mapping table. Assume that the local storage address mapping table is managed by the FAT32 file system, with a cluster size of 4 KB.
Table 2: a continuous local store address mapping table
The address mapping table management module of the virtual SD card controller locally establishes a local storage address mapping table after acquiring the storage address of the cloud space. Assuming that the policy adopted by the user is to integrate the storage spaces into M virtual SD cards, and some of the virtual SD cards include a plurality of cloud storage spaces, the address integration policy of the virtual SD card including the plurality of cloud storage spaces is according to the method shown in fig. three. Different starting addresses are used for distinguishing different virtual SD cards. As shown in table 3, a plurality of consecutive local storage address tables.
Table 3: multiple sequential local store address mapping tables
Fig. 6 shows a schematic diagram of writing a file into a virtual SD card by a mobile terminal according to an embodiment of the present invention, where as shown in fig. 6, the mobile terminal writes a file into the virtual SD card, and the mobile terminal communication module receives a request for writing the file, and sends the request and file information to the cloud storage communication module, and the cloud storage communication module completes a request for uploading the file. And after the cloud storage space receives and stores the uploaded file, feeding back space storage information to the cloud storage communication module. After receiving the storage information of the cloud space, the cloud space storage communication module transmits the cloud space storage updating information to the cloud information management module, updates the local cloud space information, and informs the address mapping table management module of updating the local storage address mapping table by the cloud information management module. And after the address mapping table management module is updated, the mobile terminal communication module is informed, and the mobile terminal communication module informs that the mobile terminal file is stored completely.
Fig. 7 is a schematic diagram illustrating that a mobile terminal opens a file stored in a virtual SD card according to an embodiment of the present invention, and as shown in fig. 7, the mobile terminal reads the file stored in the virtual SD card, and the mobile terminal communication module receives a request for opening the file stored in the virtual SD card from the mobile terminal, and then transmits the request to the address mapping table management module. And the address mapping table management module searches a storage address of a corresponding cloud space in a local storage address mapping table according to the file information required to be read, and transmits the storage address to the cloud storage communication module. And the cloud storage communication module sends a file downloading request to the corresponding cloud storage space, and then downloads the required file content. After the file content is obtained, the cloud storage communication module directly sends file information to the mobile terminal communication module, and the file information is directly submitted to a cache of the mobile terminal by the mobile terminal communication module to complete the reading operation of the virtual SD card file.
In summary, the present invention has the following technical effects:
according to the invention, the address of the cloud storage space is used for establishing the local storage address mapping table, and the data reading and writing operation is carried out in the cloud storage space, so that the user experience is improved.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (10)
1. A method for realizing virtual storage of a mobile terminal is characterized by comprising the following steps:
the method comprises the steps that a virtual SD card controller initiates a request for establishing cloud storage to a cloud storage space to obtain cloud storage space address information, cloud storage space capacity information and cloud storage file information of the cloud storage space;
the virtual SD card controller establishes a local storage address mapping table comprising a local storage initial address, cloud storage space capacity, cloud storage file information and a cloud storage space storage address according to the obtained cloud storage space address information, cloud storage space capacity information and cloud space storage file information;
after the mobile terminal uploads the written data file to the cloud storage space for storage through the virtual SD card controller, the virtual SD card controller updates the data file of the local storage address mapping table; and
and the virtual SD card controller finds out the data file read out by the mobile terminal from the local storage address mapping table, downloads the data file found out from the local storage address mapping table through the cloud storage space, and sends the downloaded data file to the mobile terminal.
2. The method according to claim 1, wherein the obtaining, by the virtual SD card controller, cloud storage space address information, cloud storage space capacity information, and cloud storage file information of the cloud storage space by initiating a request for establishing cloud storage to the cloud storage space comprises:
the method comprises the steps of receiving a result message returned by a cloud storage space by initiating a request for establishing cloud storage to the cloud storage space;
and when the result message is a permission authentication message, obtaining cloud storage space address information, cloud storage space capacity information and cloud space storage file information of the cloud storage space.
3. The method according to claim 2, wherein the file information stored in the cloud space includes file name information, file capacity information, and file storage location information.
4. The method according to claim 3, wherein the uploading, by the mobile terminal, the written data file to the cloud storage space for saving, and the updating, by the virtual SD card controller, the data file of the local storage address mapping table comprises:
the mobile terminal uploads the written data file to the cloud storage space;
after the cloud storage space receives and stores the uploaded written data file, feeding back space storage information to the virtual SD card controller;
and the virtual SD card controller updates the data file of the local storage address mapping table according to the space storage information and then sends a notification request for storing the written data to the mobile terminal.
5. The method according to claim 4, wherein the finding out the data file read out by the mobile terminal from the local storage address mapping table, and the downloading the read out data file through the cloud storage space comprises:
finding out the data file read by the mobile terminal from the local storage address mapping table according to the request for reading the data file sent by the mobile terminal;
sending a downloading request for downloading the read data file to the cloud storage space;
and after receiving the downloading request, the cloud storage space downloads the read data file and sends the downloaded read data file to the mobile terminal.
6. An apparatus for implementing virtual storage of a mobile terminal, comprising:
the cloud information management module of the virtual SD card controller is used for initiating a request for establishing cloud storage to a cloud storage space to obtain cloud storage space address information, cloud storage space capacity information and cloud space storage file information of the cloud storage space;
the address mapping table management module of the virtual SD card controller is used for establishing a local storage address mapping table comprising a local storage initial address, cloud storage space capacity, cloud storage file information and a cloud storage space storage address according to the obtained cloud storage space address information, cloud storage space capacity information and cloud space storage file information; after a mobile terminal communication module of the virtual SD card controller uploads a data file written by a mobile terminal to the cloud storage space for storage, the data file of the local storage address mapping table is updated;
the mobile terminal communication module of the virtual SD card controller is used for uploading the data file written by the mobile terminal to the cloud storage space for storage; and the cloud storage space is used for finding out the data file read out by the mobile terminal from the local storage address mapping table, downloading the data file found out from the local storage address mapping table through the cloud storage space, and sending the downloaded data file to the mobile terminal.
7. The apparatus of claim 6, wherein the cloud information management module comprises:
the request unit is used for initiating a request for establishing cloud storage to a cloud storage space and receiving a result message returned by the cloud storage space;
and the obtaining unit is used for obtaining the cloud storage space address information, the cloud storage space capacity information and the file information stored in the cloud space of the cloud storage space when the result message is the permission authentication message.
8. The apparatus according to claim 7, wherein the file information stored in the cloud space includes file name information, file capacity information, and file storage location information.
9. The apparatus of claim 8, wherein the mobile terminal communication module comprises:
the uploading subunit is used for uploading the written data file to the cloud storage space by the mobile terminal;
the updating subunit is used for updating the data file of the local storage address mapping table after the cloud storage space receives and stores the uploaded written data file;
and the sending subunit is configured to send a notification request for storing the written data to the mobile terminal after updating the data file in the local storage address mapping table.
10. The apparatus of claim 9, wherein the mobile terminal communication module further comprises:
the searching subunit is used for finding out the data file read by the mobile terminal from the local storage address mapping table according to the request for reading the data file sent by the mobile terminal;
the downloading subunit is used for sending a downloading request for downloading the read data file to the cloud storage space;
and the sending subunit is configured to download the read data file after the cloud storage space receives the download request, and send the downloaded read data file to the mobile terminal.
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| CN201410015385.9A CN104778129B (en) | 2014-01-14 | 2014-01-14 | Method and device for realizing virtual storage of mobile terminal |
| PCT/CN2014/077721 WO2015106511A1 (en) | 2014-01-14 | 2014-05-16 | Method and device for mobile terminal virtual storage |
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| CN201410015385.9A CN104778129B (en) | 2014-01-14 | 2014-01-14 | Method and device for realizing virtual storage of mobile terminal |
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| CN102882885A (en) * | 2012-10-17 | 2013-01-16 | 北京卓微天成科技咨询有限公司 | Method and system for improving cloud computing data security |
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