CN1519773A - Method and device for managing transmission of data in external storage unit in type of plug-in card - Google Patents
Method and device for managing transmission of data in external storage unit in type of plug-in card Download PDFInfo
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- CN1519773A CN1519773A CNA031024785A CN03102478A CN1519773A CN 1519773 A CN1519773 A CN 1519773A CN A031024785 A CNA031024785 A CN A031024785A CN 03102478 A CN03102478 A CN 03102478A CN 1519773 A CN1519773 A CN 1519773A
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Abstract
The method and device suitable to electronic information equipment, making data transmission function of device possess humanization and stability. When plug-in type external storage unit is inserted to data transmission device, grasp structure at opening of the device fixes the storage unit, preventing the external storage unit from falling off in procedure of transferring data so as to cause incomplete data access. In data transmission, data stored inside inner storage unit are transferred to plug-in type external storage unit, and dynamic information generated in operation is displayed for user to reference as basis for carrying out operating procedure, and preventing deleting data to be saved.
Description
Technical field
The invention relates to a kind of data transmission technology, particularly about the method and the device of data transfer management between a kind of electronic message unit internal storage and the external memory card.
Background technology
(Digital Still Camera DSC) as a kind of electronic message unit, can be used to take digital camera, and the video conversion that photographs can be become the digital video file.Because digital image file need take bigger capacity when storage, therefore need use the bigger storage card of capacity usually and store.
In addition, in order to meet compact and portable requirement, the card-type digital camera of developing at present (Card Size Digital Still Camera), the main frame volume is about as much as a name cards size, therefore is fit to the user and carries.
Yet the problem of card-type digital camera is that it generally only is equipped with the built-in storage card of 16MB, and the storage space of 16MB only can be stored the digital photos of about 80 left and right sides low resolution or store less than 10 high-resolution digital photos.For solving the problem of lack of memory capacity, sometimes need be at the external large-capacity memory card of internal body plant of card-type digital camera, for example CF (Compact Flash) storage card or SD storage card, yet being the card-type digital camera, the shortcoming of this way needs considerable inner space, settle these external jumbo storage cards, and wherein the body of jumbo storage card is the internal body that all is inserted into the card-type digital camera, therefore make the size of card-type digital camera become big and not meet compact requirement, at this problem, the U.S. the 6th, 208, No. 380 patent proposes a solution, the way of this scheme is shown in Fig. 2 A, be the length that shortens socket module 70, make external memory card 7 when being inserted into socket module 70, it is the casing that exposes outside digital camera 100 that body over half is arranged, this way is the storage card that can provide external, does not increase the size of camera again.Digital camera is transferred to the data that internal storage is deposited in the external memory card 7 by this socket module 70 subsequently, in case data is all transferred in the external memory card 7 the data deletion of just internal storage being deposited.Above-mentioned way can reduce the volume of digital camera body significantly, and the memory capacity that can infinitely expand digital camera, but this design also has shortcoming, this design does not have the data transfer management function exactly, the interface of one human can't be provided, can carry out interaction with the user, it is the management process by the leading data transmission of machine itself, can't provide real-time internal storage behaviour in service for the user, just the user can not learn in advance that internal storage has used capacity and residual capacity, can't judge when insert external memory card 7 according to the capacity of storage card.Above mentioned United States Patent (USP) case is to adopt the data file Delete All that once will be stored in the internal storage, and this way is also inadvisable.Because in the transmission course of data, may be because some factor causes leaving in originally the image data of internal storage, fail to transfer to fully in the external memory card,, can cause the permanent loss of data if will not transfer to the also deletion in the lump of image data of external memory card 7.Have again, this invention is to be applied on the portable electronic information equipment of similar digital camera, because of having this bulk area over half, external memory card 7 exposes outside digital camera 100, when in the user is moving, using digital camera, move rocking of causing and to cause this external memory card 7 from socket module 40, to break away from, cause data to shift incomplete situation and take place.How therefore the data-transformation facility stablizing and have humanization interface be provided, and is present problem demanding prompt solution.
Summary of the invention
For overcoming the shortcoming of above-mentioned prior art, fundamental purpose of the present invention is to provide a kind of data transfer management method and device of plug-in type external storage element, can be applicable on the electronic message unit, to electronic message unit provide one can be with the data of storing on the internal storage, the complete function of transferring in the external memory card.
Another object of the present invention is to provide a kind of data transfer management method and device of plug-in type external storage element, the multidate information Presentation Function of hommization can be provided, allow the user grasp the relevant data information transmitted at any time, as the foundation that judges whether insert external memory card, in order to the carrying out of data transmission operation.
Another purpose of the present invention is to provide a kind of data transfer management method and device of plug-in type external storage element, can and fix plug-in type external storage element insertion digital camera inside, prevent that this plug-in type external storage element from coming off in moving, the situation that causes the data transmission operation to interrupt takes place.
The data transfer management device of plug-in type external storage element of the present invention comprises: socket module, comprise that electrically connects a point, and these electrically connect point is the internal circuit that is couple to this electronic message unit, and it also comprises: guide groove has first end and second end; Wherein this first end is positioned at the body surface of this electronic message unit, and this second end then is contiguous to this socket module; And the length of this guide groove is less than the length of plug-in type external storage element; And clamp structure, be placed on first end of guide groove, when this plug-in type external storage element inserts the location, this plug-in type external storage element is applied certain holding force, this plug-in type external storage element is fixed;
Wherein, this plug-in type external storage element is inserted into this guide groove from first end of this guide groove, and and then touch this socket module by the guiding of this guide groove, electric property coupling makes electronic message unit inside carry out accessing operation to this plug-in type external storage element by the data transfer management device to the internal circuit of this electronic message unit whereby; Micro controller unit, the internal storage drive software in order to control and to cooperate this data transfer management device inner function module, carries out the data transfer management operation to this electronic message unit; Digital signal processing unit, be used for handling from data transfer management device internal element module and this electronic message unit and transmit the digital signal that the relevant functional module of operation transmits with data, and the result that will handle is sent to micro controller unit, is used for the reference frame of data transfer management control; The display driver module is when digital signal processing unit receives the signal of expression internal storage unit storage area deficiency, accepts the steering order of micro controller unit, and the display that drives this electronic message unit carries out the information output operation; And detecting module, inform the information of free space deficiency of internal storage unit when display output information after, when notifying the user to insert the plug-in type external storage element, whether this plug-in type external storage element inserted in the socket module fully survey, and result of detection is sent to micro controller unit by digital signal processing unit, carry out next procedure reference for micro controller unit.
The data transfer management method of plug-in type external storage element of the present invention comprises the following steps: that the data transfer management method of this plug-in type external storage element comprises: (1) makes data transmission device survey the operating position of electronic message unit internal storage unit, whether the storage volume of judging internal storage unit is full, if, then carry out step (2), if not, then show internal storage unit remaining storage area at present; (2) make this data transmission device send the caution sound, and the display of setting up by this electronic message unit output information warning, notify user's internal storage unit off-capacity, need to insert the plug-in type external storage element, make the data storage operation can continue to carry out; (3) make this data transmission device judgment data transmitting device whether insert in the electronic message unit,, then carry out step (4),, then return step (2) if do not insert if insert; (4) make this data transmission device that all data of internal storage unit storage are copied in the plug-in type external storage element, and simultaneously the data file in internal storage unit and the external storage element is surveyed; (5) make this data transmission device contrast the file name of depositing in internal storage unit and the external storage element one by one, judge whether all data all internally storage unit successfully copy in the plug-in type external storage element, if not, then carry out step (6), if, after then deleting the file in the internal storage unit, directly proceed to step (7); (6) make this data transmission device judge whether plug-in type external storage unit stores capacity is enough, if then return step (4), if not, the display that then makes this data transmission device set up by this electronic message unit, output information notify the user to change empty plug-in type external storage element; And (7) display of making this data transmission device set up by this electronic message unit, output information informs that the user extracts the plug-in type external storage element from data transmission device.
To sum up, the data transfer management method and the device of a kind of plug-in type external storage element of the present invention, can provide dynamic information to the user, allow the user grasp the relevant data information transmitted at any time, as the foundation that judges whether insert external memory card, in order to the carrying out of data transmission operation; In addition, after external storage element inserts digital camera inside, a device is arranged, can stick into row to this and fix, prevent that external storage element from coming off in moving, cause the data transmission operation to interrupt.
Description of drawings
Fig. 1 is the framework block schematic diagram, illustrates that data transfer management device of the present invention is applied in the dress of digital camera inside and connects situation;
Fig. 2 A to Fig. 2 B is a configuration diagram, the situation when the outward appearance signal of display application digital camera of the present invention and external memory card and use thereof.
Fig. 3 is process flow diagram and picture output map, steps flow chart when the data transfer management method of display application plug-in type external storage element of the present invention is carried out external memory card data transfer management function on digital camera reaches when the user opens a certain steps flow chart of execution, the picture output of generation.
Embodiment
Embodiment
In following examples, the data transfer management method and the device of plug-in type external storage element of the present invention, be to be applied on the digital camera (Card Size Digital Still Camera), digital camera provided the data transfer management function of stable and robotization.Be noted that the data transfer management method and the device of plug-in type external storage element of the present invention only do not limit and can be used on the digital camera.The present invention can be applicable to any can the electronic message unit of external storage element on, on the particularly portable electronic message unit, provide the data transfer management function to these electronic message units.Following conjunction with figs. describes the data transfer management method of plug-in type external storage element of the present invention and the embodiment of device in detail.
Fig. 1 is a device architecture synoptic diagram, illustrates that data transfer management device 10 of the present invention is applied in the device of digital camera inside and connects situation.As shown in the figure, digital camera is by camera lens 1 filmed image, and convert the data such as image that camera lens 1 receives to current signal via charge-coupled image sensor 2 (CCD), handle by digital signal processing unit 20, digital signal processing unit 20 is behind the current signal that receives charge-coupled image sensor 2 transmission, current signal is deciphered, be reduced into the taken image of camera lens 1, and with this image of taking through camera lens 1, leave internal storage 3 in or be temporarily stored in the Dram 4 with document form, carry out in filming image and the store files process at digital camera, the user can be by keystroke interface module 30, state to the image archives of digital camera internal storage is set, and can select to be retained in a certain image archives in the internal storage 3 or permanent delet file in the storer 3 internally.
Store data in the process carrying out filming image and image file, digital camera and data transfer management device are to provide its required working power by power supply unit 5, in addition, digital processing element 20 is to continue the image by camera lens 1 shooting with the user, be input in the internal storage 3 and deposit, and in the process of depositing the image archives, the image storage process relevant information that provides according to digital processing element 20 by micro controller unit 40, control display driver module 50 drives the LCD 6 that is connected, and on LCD 6, show to take number and internal storage 3 information such as usage space and remaining space with picture, for the user as whether inserting external memory card 7 or continue of the reference frame of use internal storage 3 as the storage element of image file.
Basically, because the image file that digital camera stores all has bigger size, the general built-in storage element of digital camera, the storage area that 16MB is only arranged as internal storage 3, the space of 16MB only can hold the digital photos of about about 80 low-res or less than 10 high-resolution digital photo, therefore general digital camera all needs to connect storage card in external mode, to expand the storage volume of itself.Store data in the process carrying out filming image and image file, if internal storage 3 storage volume deficiencies are surveyed and found to digital processing element 20, in the time of can't continuing to deposit image file, digital processing element 20 is given micro-control unit 40 with this information feedback, micro-control unit 40 reminds the user need insert external memory card 7 to replace the function that internal storage 3 stores image in the mode of control hummer sounding and control display driver module 50 driving LCD 6 display message.When the user closes the sound that hummer sends by keystroke interface module 30, micro-control unit 40 makes the operating position of 60 pairs of socket module of detecting module survey then, whether external memory card 7 is seated in the socket module 70 to differentiate the user, when the user guides to specific set with external memory card 7 via socket module 70 set guide grooves (Fig. 2 B), and after by clamp structure 72 (Fig. 2 B) external memory card 7 being applied certain holding force and is fixed, detecting module 40 is about to this information translation and becomes digital signal, be sent to micro controller unit 40 by digital processing element 20, image information of having found external memory card 7 of micro controller unit 40 control LCD, 6 outputs, notifying user's external memory card 7 to place finishes, can be really will influence file storage externally in the storage card 7, unreal to prevent because of external memory card 7 insertions, the situation that causes data not shift fully takes place.In addition, micro controller unit 40 also requires digital processing element 20 that the image file of internal storage 3 storage is exported, and with the image file of these outputs with socket module 70 as transmission interface, copy to external memory card 7 internal storage.In image archives transmission course, 40 pairs of internal storages 3 of micro controller unit and external memory card 7 are surveyed, and the filename that its inside is stored compares one by one, if when finding that the identical file title is present in internal storage 3 and the external memory card 7 simultaneously, then delete the file in the internal storage 3.If micro controller unit 40 is found before deleted file, the previous setting of this document person of being to use will be retained in the internal storage 3, at this moment, micro controller unit 40 will drive hummer 80 and send the caution sound, and at LCD 6 these image file pictures of output, judge whether this image file is deleted for the user in internal storage 3, with the image file deletion that prevents that mistake from will keep.
Fig. 2 B is a configuration diagram, the schematic appearance of the external memory card 7 that display application digital camera 100 of the present invention and this digital camera 100 are used and the situation that these two is used in combination.Shown in Fig. 2 B, the socket module 70 of data transfer management device of the present invention comprises that guide groove 71 and clamp structure 72 (are noted that herein, Fig. 2 A to Fig. 2 B is the synoptic diagram of simplifying, therefore only the mode with signal illustrates basic conception of the present invention, and the assembly that wherein shows not is number, shape and the dimension scale drafting when implementing with reality).
Fig. 3 is process flow diagram and picture output map, the data transfer management method of display application plug-in type external storage element of the present invention, steps flow chart when on digital camera, carrying out external memory card data transfer management function, and when the user opens the some steps flow charts of execution, the picture output of generation.Power supply when user's power-on supply 5, digital camera is powered, make digital camera carry out the filming image task, at first, in step S1, micro controller unit 40 is by digital signal processing unit 20, storage volume to internal storage 3 is surveyed, and the result that will survey orders about LCD 6 output picture A by display driver module 50, shows the operating position of present internal storage 3, for user's reference, enter step S2 subsequently.
In step S2, the storage volume of 40 pairs of internal storages 3 of micro controller unit is surveyed, whether full with the memory space of judging internal storage 3, the file if the memory space of internal storage 3 can't have been restored, then then carry out step S3, otherwise return step S1, seek and visit by the operating position of 40 pairs of internal storages 3 of micro controller unit again.
In step S3, micro controller unit 40 is at the situation of internal storage 3 storage volume deficiencies, send information warning, micro controller unit 40 removes by display driver module 50 and orders about LCD 6 output picture B, shows outside the full information in the storage area of internal storage 3, also drives hummer 80 simultaneously and sends the caution sound, remind the storage area of user's internal storage 3 full, need to insert external memory card 7,, enter step S4 subsequently to finish the storage work of image file.
In step S4, micro controller unit 40 is by digital signal processing unit 20, whether inserting socket module 70 by 70 pairs of external memory cards of socket module 7 surveys, if external memory card 7 has inserted in the socket module 70, then proceed to step S5, if external memory card 7 does not insert in the socket module 70 as yet, return step S3 again, continue the storage area of internal storage 3 is completely sent information warning.
In step S5, micro controller unit 40 orders about LCD 6 output picture C by display driver module 50, notify user's external memory card 7 correctly to insert in the socket module 70, subsequently, micro controller unit 40 is read the image file that internal storage 3 is deposited by digital signal processing unit 20, and with socket module 70 as data transmission interface, image file transferred in the external memory card 7 deposits, enter step S6 subsequently.
In step S6, micro controller unit 40 orders about LCD 6 output screen D by display driver module 50, inform the information that user's current file is duplicating, seek and visit by the file content of digital signal processing unit 20 and 70 pairs of internal storages 3 of socket module and external memory card 7 subsequently, enter step S7 subsequently.
In step S7, micro controller unit 40 is by digital signal processing unit 20, and retrieves contrast one by one by the file name that 70 pairs of internal storages 3 of socket module and external memory card 7 are stored, and enters step S8 subsequently.
In step S8, micro controller unit 40 is according to the comparing result that obtains from step S7, whether the archives of depositing in the internal storage 3 all successfully transferred to deposit in the external memory card 7 judge, if the file name that internal storage 3 and external memory card 7 deposit in is all identical, represent promptly that archives are all successfully transferred in the external memory card 7 and deposit, enter step S9 subsequently, otherwise if internal storage 3 and external memory card 7 file name of depositing are incomplete same, represent then that archives are not transferred in the external memory card 7 fully and deposit, leap to step S10 and handle.
In step S9, micro controller unit 40 orders about LCD 6 output picture E by display driver module 50, notify the whole archives of user all internally storer 3 successfully transfer in the external memory card 7 and deposit, subsequently at LCD 6 output picture F, inform the user, archives have shifted and have finished, and make the user that external memory card 7 is extracted from socket module 70.
In step S10, micro controller unit 40 passes through socket module 70 by digital signal processing unit 20, storage volume to external memory card 7 is surveyed, whether the storage capacity of judging external memory card 7 is full, if the storage capacity of external memory card 7 is full, then proceed to step S11, if not, then return step S5, re-execute reproduction of documents work.
In step 11, make micro controller unit 40 order about LCD 6 output picture G by display driver module 50, inform that the user changes the external memory card of a blank, returns step S3.
Claims (12)
1. the data transfer management method of a plug-in type external storage element, be applicable to and have internal storage unit and can add on the electronic message unit of storage element, this electronic message unit has display, it provides the data transfer management function by the data transmission device on this electronic message unit, and can show in carrying out the management operations process that relevant multidate information supplies the user that this management function is controlled, it is characterized in that the data transfer management method of this plug-in type external storage element comprises:
(1) make data transmission device survey the operating position of electronic message unit internal storage unit, judge whether the storage volume of internal storage unit is full, if, then carry out step (2), if not, then show internal storage unit remaining storage area at present;
(2) make this data transmission device send the caution sound, and the display of setting up by this electronic message unit output information warning, notify user's internal storage unit off-capacity, need to insert the plug-in type external storage element, make the data storage operation can continue to carry out;
(3) make this data transmission device judgment data transmitting device whether insert in the electronic message unit,, then carry out step (4),, then return step (2) if do not insert if insert;
(4) make this data transmission device that all data of internal storage unit storage are copied in the plug-in type external storage element, and simultaneously the data file in internal storage unit and the external storage element is surveyed;
(5) make this data transmission device contrast the file name of depositing in internal storage unit and the external storage element one by one, judge whether all data all internally storage unit successfully copy in the plug-in type external storage element, if not, then carry out step (6), if, after then deleting the file in the internal storage unit, directly proceed to step (7);
(6) make this data transmission device judge whether plug-in type external storage unit stores capacity is enough, if then return step (4), if not, the display that then makes this data transmission device set up by this electronic message unit, output information notify the user to change empty plug-in type external storage element; And
(7) display that makes this data transmission device set up by this electronic message unit, output information informs that the user extracts the plug-in type external storage element from data transmission device.
2. the data transfer management method of plug-in type external storage element as claimed in claim 1, it is characterized in that this plug-in type external storage element is a kind of in Compact Flash, secure digital storage card, flash-storing card, SM storage card and the multimedia storage card institute cohort group.
3. the data transfer management method of plug-in type external storage element as claimed in claim 1 is characterized in that this electronic message unit is a digital camera.
4. the data transfer management method of plug-in type external storage element as claimed in claim 1 is characterized in that this display is a LCD.
5. the data transfer management method of plug-in type external storage element as claimed in claim 1 is characterized in that, this caution sound sends by hummer.
6. the data transfer management method of plug-in type external storage element as claimed in claim 1, it is characterized in that, this step (5) is to find the file name identical with internal storage unit in the plug-in type external storage element, and this document title that just will leave internal storage unit in is deleted.
7. the data transfer management device of a plug-in type external storage element, be applicable to and have internal storage unit and can add on the electronic message unit of storage element, this electronic message unit has display, in order to cooperate software, provide the data transfer management function to this electronic message unit, it is characterized in that the data transfer management device of this plug-in type external storage element comprises:
Socket module comprises that electrically connects a point, and these to electrically connect point be the internal circuit that is couple to this electronic message unit, it also comprises:
Guide groove has first end and second end; Wherein this first end is positioned at the body surface of this electronic message unit, and this second end then is contiguous to this socket module; And the length of this guide groove is less than the length of plug-in type external storage element; And
Clamp structure is placed on first end of guide groove, when this plug-in type external storage element inserts the location, this plug-in type external storage element is applied certain holding force, and this plug-in type external storage element is fixed;
Wherein, this plug-in type external storage element is inserted into this guide groove from first end of this guide groove, and and then touch this socket module by the guiding of this guide groove, electric property coupling makes electronic message unit inside carry out accessing operation to this plug-in type external storage element by the data transfer management device to the internal circuit of this electronic message unit whereby;
Micro controller unit, the internal storage drive software in order to control and to cooperate this data transfer management device inner function module, carries out the data transfer management operation to this electronic message unit;
Digital signal processing unit, be used for handling from data transfer management device internal element module and this electronic message unit and transmit the digital signal that the relevant functional module of operation transmits with data, and the result that will handle is sent to micro controller unit, is used for the reference frame of data transfer management control;
The display driver module is when digital signal processing unit receives the signal of expression internal storage unit storage area deficiency, accepts the steering order of micro controller unit, and the display that drives this electronic message unit carries out the information output operation; And
Detecting module, inform the information of free space deficiency of internal storage unit when display output information after, when notifying the user to insert the plug-in type external storage element, whether this plug-in type external storage element inserted in the socket module fully survey, and result of detection is sent to micro controller unit by digital signal processing unit, carry out the reference of next program for micro controller unit.
8. the data transfer management device of plug-in type external storage element as claimed in claim 7, it is characterized in that this plug-in type external storage element is a kind of in CF card, secure digital storage card, flash memory cards, SM storage card and the multimedia storage card institute cohort group.
9. the data transfer management device of plug-in type external storage element as claimed in claim 7 is characterized in that this electronic message unit is a digital camera.
10. the data transfer management device of plug-in type external storage element as claimed in claim 7 is characterized in that this electronic message unit is rectangular shape, and this socket module be arranged on this rectangular machine six axial planes one of them.
11. the data transfer management device of plug-in type external storage element as claimed in claim 7 is characterized in that this display is a LCD.
12. the data transfer management device of plug-in type external storage element as claimed in claim 7 is characterized in that, this information output operation is image information of output on display, notifies the user to insert the plug-in type external storage element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03102478 CN1232112C (en) | 2003-01-24 | 2003-01-24 | Method and device for managing transmission of data in external storage unit in type of plug-in card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03102478 CN1232112C (en) | 2003-01-24 | 2003-01-24 | Method and device for managing transmission of data in external storage unit in type of plug-in card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1519773A true CN1519773A (en) | 2004-08-11 |
| CN1232112C CN1232112C (en) | 2005-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03102478 Expired - Fee Related CN1232112C (en) | 2003-01-24 | 2003-01-24 | Method and device for managing transmission of data in external storage unit in type of plug-in card |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104731530A (en) * | 2015-03-23 | 2015-06-24 | 广东欧珀移动通信有限公司 | Mobile terminal and file management method applied to same |
| CN105991902A (en) * | 2015-01-05 | 2016-10-05 | 致伸科技股份有限公司 | Electronic device with external battery |
| CN107483858A (en) * | 2017-08-31 | 2017-12-15 | 益和电气集团股份有限公司 | The distributed memory system and its distributed storage method of electricity consumption enterprise supervision video |
-
2003
- 2003-01-24 CN CN 03102478 patent/CN1232112C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105991902A (en) * | 2015-01-05 | 2016-10-05 | 致伸科技股份有限公司 | Electronic device with external battery |
| CN104731530A (en) * | 2015-03-23 | 2015-06-24 | 广东欧珀移动通信有限公司 | Mobile terminal and file management method applied to same |
| CN104731530B (en) * | 2015-03-23 | 2017-11-14 | 广东欧珀移动通信有限公司 | A kind of file management method and mobile terminal applied to mobile terminal |
| CN107483858A (en) * | 2017-08-31 | 2017-12-15 | 益和电气集团股份有限公司 | The distributed memory system and its distributed storage method of electricity consumption enterprise supervision video |
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| Publication number | Publication date |
|---|---|
| CN1232112C (en) | 2005-12-14 |
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