CN101414284A - Data protection method and access authority management method - Google Patents
Data protection method and access authority management method Download PDFInfo
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- CN101414284A CN101414284A CNA200710181606XA CN200710181606A CN101414284A CN 101414284 A CN101414284 A CN 101414284A CN A200710181606X A CNA200710181606X A CN A200710181606XA CN 200710181606 A CN200710181606 A CN 200710181606A CN 101414284 A CN101414284 A CN 101414284A
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Abstract
A data protection method comprises the following steps: checking whether a preset external storage device is connected to a computer system when the computer system executes a shutdown procedure; backuping data in a preset zone of the storage device to the preset external storage device if the preset external storage device is connected to a computer system when the computer system executes the shutdown procedure, and generating a backup data; and writing a special data template in the preset zone to override the original data in the preset zone.
Description
Technical field
The present invention relates to a kind of data guard method, particularly relate to the management method of a kind of data guard method and access right thereof.
Background technology
Along with the progress of science and technology, computer system has become indispensable instrument in daily life, and computer system also develops multiple storage device storage data.In general, the user often deposits in many significant datas in the middle of the storage device, for example personal data, meeting report and company's secret or the like.Yet, when storage device is lost, will cause user's significant data to leak.
In order to prevent the generation of above-mentioned situation, the storage device of cipher protection function then appears having on the market.The controller that this kind has in the storage device of cipher protection function can be according to Basic Input or Output System (BIOS) (Basic Input Output System, the BIOS) special instruction that is sent, storage device is locked (lock) or release (unlock).Though known technology can utilize password to protect stored data in the computer system, and dangerous.Because support the storage device of storage device cryptographic function, the data cryptogram of its protection still is stored on the circuit board of storage device itself.Therefore, in some cases, after for example storage device being disassembled, utilize an identical circuit board to change the original circuit board of storage device again, install back again afterwards in the computer system, still data in the accessing storing device effectively.
Therefore, the data protection measure of present data memory device still has the space of improvement.
Summary of the invention
The invention provides a kind of data guard method, can when computer system is carried out shutdown programm, the data in the storage device be protected.
The invention provides a kind of data guard method, can be in the operating system of computer system under dormancy, power saving and the user's exit state, the data in the storage device are protected.
The invention provides a kind of management method of storage device access right, can when computer system is carried out shutdown programm or the computer system operation system be under dormancy, power saving or the user's exit state, the data in the storage device are protected.
The present invention proposes a kind of data guard method, is applicable to computer system, and wherein computer system comprises a storage device.This guard method comprises the following steps: when computer system is carried out shutdown programm, checks whether default external storage device is connected to computer system.When judging that default external storage device is connected to computer system when computer system is carried out shutdown programm, in the extremely default external storage device of the data backup of a default section in the storage device, and produce a Backup Data, then write a special data example edition to default section, to cover the data of default section Central Plains beginning.
From another viewpoint, the present invention proposes a kind of data guard method, is applicable to computer system, and wherein computer system comprises a storage device.When this guard method comprises the following steps: that operating system when computer system is in improper user mode, check whether default external storage device is connected to computer system.When judging that default external storage device is connected to computer system when operating system is in improper user mode, then with in the extremely default external storage device of the data backup of a default section in the storage device, and produce a Backup Data, then write a special data example edition to default section, to cover the data of default section Central Plains beginning.
From another viewpoint, the present invention proposes a kind of management method of storage device access right, is suitable for managing the computer system with a plurality of storage devices.This management method comprises the following steps: to carry out shutdown programm when computer system, and the operating system of computer system checks whether default external storage device is connected to computer system when improper user mode the two one of them.When checking that finding to preset external storage device has connected computer system, then select said storage unit at least the data backup in the default section of one in one of them to default external storage device, and produce a Backup Data, then write a special data example edition to default section, to cover the data of default section Central Plains beginning, so that the data in the selecteed storage device can't be normally by access.
Beneficial effect of the present invention backs up by the data of default external storage device with a default section in the storage device for the present invention, afterwards, utilizes a special data example edition to cover raw data in the above-mentioned predeterminable area, to realize the effect of data protection.Yet, data in above-mentioned predeterminable area do not revert back to before the original data as yet, when the system that uses a computer carries out data read to storage device, because the data in the above-mentioned default section are the special data example edition still, make computer system can't do the action of normal access to the data in the above-mentioned default section of storage device.Therefore, the present invention can protect the stored data of storage device effectively.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and be described with reference to the accompanying drawings as follows.
Description of drawings
Figure 1 shows that system architecture calcspar according to the computer system of one embodiment of the invention.
Fig. 2 A and Fig. 2 B are depicted as the data guard method process flow diagram according to one embodiment of the invention.
Fig. 3 A and Fig. 3 B are depicted as a kind of data guard method process flow diagram according to another embodiment of the present invention.
Fig. 4 A and 4B are depicted as the storage device access authority management method process flow diagram according to one embodiment of the invention.
Figure 5 shows that partial structurtes calcspar according to another computer system of one embodiment of the invention.
Embodiment
Figure 1 shows that system architecture calcspar according to the computer system of one embodiment of the invention.Please refer to Fig. 1, the computer system 100 that present embodiment provided can comprise central processing unit 110, chipset 120, internal memory 130, storage device 140, reach Basic Input or Output System (BIOS) (Basic Input OutputSystem is hereinafter to be referred as BIOS) unit 150.Above-mentioned central processing unit 110 can be coupled to chipset 120.Generally speaking, chipset 120 can comprise north bridge chips and South Bridge chip.By this, central processing unit 110 can be coupled to internal memory 130, storage device 140 and BIOS unit 150 by chipset 120.
In the present embodiment, internal memory 130 can be dynamic RAM (DRAM), static RAM (SRAM), Synchronous Dynamic Random Access Memory (SDRAM) or two random access memory (DDRAM).In addition, storage device 140 for example is a hard disk, and in other embodiments, storage device 140 can be a flash memory.150 of above-mentioned BIOS unit can be flash memory or ROM (read-only memory), and BIOS unit 150 stores relevant bios program code.
In addition, computer system 100 can also connect default external storage device 170 by connecting interface 160 except the storage device 140 of inside.In certain embodiments, connecting interface 160 can be a universal serial bus (USB) interface, IEEE 1394 interfaces, SATA interface or ide interface, default external storage device 170 then can be the non-volatile memory device with corresponding connecting interface, for example: coil with oneself.
In addition, the computer system 100 of the present embodiment program that can carry out data protection to storage device 140.The process of how storage device being carried out data protection is described below with reference to process flow diagram.
Fig. 2 A and Fig. 2 B are depicted as the data guard method process flow diagram according to one embodiment of the invention, go for computer system shown in Figure 1 100.Please merge the A that sees figures.1.and.2 earlier, the data guard method that present embodiment provided can utilize the bios program (may reside in the BIOS unit 150) in the computer system 100 to realize.When a user when BIOS sets in the picture this guard method activation, computer system 100 can be carried out shutdown programm as described in the step S202.Wherein, before BIOS setting picture was meant that computer system 100 start fashion do not enter operating system, the user (for example: the setting picture that the F8 key) enters pushed programmable button.
When computer system 100 entered shutdown programm, the central processing unit 110 of computer system 100 also can be carried out the program code in the BIOS unit 150, whether was connected to computer system 100 (step S203) to check default external storage device 170.In certain embodiments, computer system 100 can judge that whether default external storage device 170 is to be connected to computer system 100 by the state that detects a default mark.Wherein, above-mentioned default mark can be in the buffer of central processing unit 110 or in internal memory 130 (not shown).
For instance, if the state of default mark is 1 o'clock, the default external storage device 170 of expression has been connected to computer system 100 ("Yes" shown in the step S203).
In step S204, computer system 100 is extremely preset the data backup of the default section of one in the storage device 140 in the external storage device 170, and produces a Backup Data.In the present embodiment, storage device 140 for example is a hard disk.Therefore, the data of above-mentioned default section can be the data in the main start sector in the hard disk.
In addition, if the state of default mark is 0 o'clock, the default external storage device 170 of expression may not be connected to computer system 100 ("No" shown in the step S203), and then computer system 100 is directly finished shutdown (step S206).
As mentioned above; in step S205; associated component (for example: central processing unit 110 and chipset 120) in the performed bios program code control computer system 100 of computer system 100 writes a special data example edition to the above-mentioned default section of storage device 140; and the data to the default section Central Plains beginning cover, to realize the effect of data protection.In the present embodiment, but above-mentioned special data example edition can be special string or through the character string of coding and self-examination.
After step S205 executed, computer system 100 just continued to carry out the associative operation of shutdown programm, to finish computer shutdown (step S206).
In the present embodiment, storage device 140 is to utilize hard disk to realize.In general, the data in the main start section of hard disk have comprised the start address and the end address of each sector of hard disk, if the data in the main start sector of hard disk are destroyed, then the data in this hard disk just can't be by access.In addition, in the present embodiment, default external storage device 170 for example is carry-on dish.Therefore, by the data guard method that present embodiment provided, the user just can pull down and carries presetting external storage device 170, and does not allow nonpermissive user read data on the claimed storage device.
Afterwards, when the user desires to make when reusing computer system 100, the user just can utilize default external storage device 170 to finish boot program, and wherein this default external storage device 170 stores the data of the default section in the storage device 140 of this computer system 100.Relevant its further specifies, please be with reference to following explanation.
Please merge the B that sees figures.1.and.2, when a user restarts computer system 100, and computer system 100 is carried out boot program as described in the step S222.Whether in start process, the program code in the BIOS unit 150 can be performed, be special example edition data (step S223) with the data in the default section of checking storage device 140.
If the program code in the BIOS unit 150 checks out that the data in the default section of storage device 140 are not special data example edition ("No" shown in the step S223), then computer system 100 is carried out the normal boot-strap program to finish start (step S227).
If the data in the default section of the discovery of the program code inspection in the BIOS unit 150 storage device 140 are special data example edition ("Yes" shown in the step S223), then computer system 100 continues execution in step S224.
In step S224, the program code in the BIOS unit 150 can check whether default external storage device 170 is connected to computer system 100.
As mentioned above, because the data of the start section of storage device 140 are covered by the special data example edition, if the program code in the BIOS unit 150 is checked out default external storage device 170 and may be connected to computer system 100 ("No" shown in the step S224), computer system 100 execution in step S228 then, interrupting boot program, that is this moment, computer system 100 can't be finished the action of start by the raw data of the main start section of storage device 140.
In other words, be connected to computer system 100 ("Yes" shown in the step S224), then continue execution in step S225 if the program code in the BIOS unit 150 is checked out default external storage device 170.
In step S225, the associated component (for example: central processing unit 110 and chipset 120) in the performed bios program code control computer system 100 of computer system 100 can be checked the Backup Data of the main start section that whether stores storage device 140 in the default external storage device 170.
If no Backup Data ("No" shown in the step S225), then computer system 100 execution in step S228 in the default external storage device 170.
If store Backup Data (being exactly the "Yes" that step S225 is indicated) in the default external storage device 170, then computer system 100 continues execution in step S226.
In step S226, the Backup Data that computer system 100 will be preset in the external storage device 170 by connecting interface 160 and chipset 120 writes back in the default section of storage device 140, to reply the raw data in the default section, make storage device 140 can reply the action of normal access.Then, computer system 100 continues to carry out relevant boot program to finish start (step S227).
The foregoing description is to carry out under the shutdown programm in computer system 100, storage device 140 is carried out the action of data protection, yet the invention is not restricted to this.Below will illustrate for another embodiment.
Fig. 3 A and Fig. 3 B are depicted as a kind of data guard method process flow diagram according to another embodiment of the present invention.Please merge earlier with reference to Fig. 1 and Fig. 3 A, be different from the embodiment among Fig. 2 A, the guard method that present embodiment provided can utilize an application program to realize.When a user from the operating system of computer system; during with this guard method activation; and the operating system of computer system 100 is as described in the step S302; when computer system 100 enters improper user mode; the application program that then is installed in the computer system 100 can be carried out step S303, whether is connected to computer system 100 to check default external storage device 170.
In the present embodiment, above-mentioned improper user mode can be dormant state, power down mode or user's exit state.In addition, in certain embodiments, application program can judge that whether default external storage device 170 is to be connected to computer system 100 by the state that detects a default mark.
In addition; the process that whether is connected to computer system 100 at the default external storage device 170 of judgement can be with reference to the explanation of last embodiment; and step S204, S205 at the step S304, the S305 that storage device 140 are carried out data protection and Fig. 2 A are same or similar, so repeat no more.At last, in step S306, computer system 100 continues the associative operation of executive operating system under improper user mode.By this, present embodiment still can carry out data protection to storage device 140.
Please refer to Fig. 3 B, be different from the embodiment among Fig. 2 B, the guard method that present embodiment provided also can utilize application program to realize.The difference of Fig. 3 B and Fig. 2 B is: the guard method of Fig. 2 B is to carry out under the state of computer system 100 start, and carries out under the guard method of Fig. 3 B state that to be the operating system in computer system 100 restart.
In addition, the step S223 of Fig. 2 B, S224, S225 are the actions that computer system 100 utilizes the program code in the BIOS unit 150 to check, the step S323 of Fig. 3 B, S324, S325 then are that computer system 100 is carried out the action that other application program is checked.Therefore, the guard method of Fig. 3 B can be with reference to Fig. 2 B, so repeat no more.
Please continue B with reference to Fig. 3, because in step S323, being installed in the data that Application inspection in the computer system 100 goes out the main start section of storage device 140 is covered by the special data example edition, therefore when carrying out step S324 and S325, the result who is judged is a "No", then can directly carry out step S328, the operating system that is exactly computer system 100 can't return back to normal operating condition by the raw data in the storage device 140.
From above several embodiment as can be known, the invention provides a kind of data guard method.And above embodiment is applied, then can extend a kind of management method of storage device access right, shown in Fig. 4 A and Fig. 4 B.And the flow process of this management method also can be with reference to Fig. 2 A, Fig. 2 B, Fig. 3 A and Fig. 3 B of previous embodiment, so repeat no more.In addition, the management method that present embodiment provided goes for managing the computer system 500 with a plurality of storage devices, is depicted as Fig. 5.Please merge with reference to Fig. 4 and Fig. 5, in the computer system 500 that present embodiment provided, can comprise a plurality of storage device 510_1,510_2 ..., 510_n, it is coupling chip group 520 jointly.
Suppose; computer system 500 has the guard method that above-mentioned Fig. 2 A and Fig. 2 B or Fig. 3 A and Fig. 3 B are depicted as; and a user A has started above-mentioned guard method when the system 500 of using a computer, and user A startup storage device 510_1 comes operational computations machine system 500.
When computer system 500 shutdown or its operating system improper user mode (being dormant state, power down mode or user's exit state); then can be corresponding to the data protection flow process of 2A or Fig. 3 A; the data of the default section of storage device 510_1 are backuped among the default external storage device A; and after data backup is finished; write a special data example edition to the default section of storage device 510_1, with the data among the protection storage device 510_1.
Yet, when user B uses a computer system 500, and utilize storage device 510_1 to carry out computer system 500 start or the operating system of computer system 500 replied and be normal operating condition.When computer system 500 enters boot program or the operating system of computer system 500 when restarting, may find that default external storage device is not connected with computer system 500, then computer system 500 can't be finished the action of start or its operating system will be returned back to normal operating condition by the raw data of presetting section of storage device 510_1.
In addition,, in advance a default external storage device B is connected to computer system 500, again computer system 500 is started or the operating system of computer system 500 is reverted back to normal operating condition if user B is when the system 500 of using a computer.Though, computer system 500 can be found that default external storage device B has with computer system 500 and be connected, owing to do not have the raw data of the default section of storage device 510_1 among the default external storage device B, therefore, computer system 500 still can't finish the start or the operating system of computer system 500 still can't return back to normal operating condition.
In addition; because storage device 510_2～510_n there is no the restriction that is subjected to data protection; therefore, user B can choose one of them stored data of storage device 510_2～510_n and starts computer system 500 or the operating system of computer system 500 is reverted back to normal operating condition.Though, the user B system 500 that can normally use a computer, because the data of storage device 510_1 are protected, then user B still can't use storage device 510_1.
Come access data when user B selects storage device 510_2, and after data access finishes, similarly started above-mentioned guard method.So; when the operating system of computer system 500 shutdown or computer system 500 during in improper user mode; computer system 500 also can be corresponding to the data protection flow process of 2A or Fig. 3 A; the data of the default section of storage device 510_2 are backuped among the default external storage device B; and after data backup is finished; write special example edition data again to the default section of storage device 510_2, with the data among the protection storage device 510_2.
Afterwards, when user A reuses computer system 500, user A just can utilize default external storage device A to allow computer system 500 finish boot program or allowing the operating system of computer system 500 reply is normal operating condition, and wherein default external storage device A stores the data of the default section among the storage device 510_1 of computer system 500.
Finish start or the operating system of computer system 500 is replied to behind the normal operating condition in computer system 500, user A then can use hard disk 510_1 to carry out the action of data access, also can use storage device 510_3～510_n.But, because the data among the storage device 510_2 are protected, then user A still can not use storage device 510_2.Therefore, the storage device that is protected is not before replying raw data, and the user also can not carry out the action of data access to above-mentioned storage device, to reach the effect of data protection.
In sum, the present invention backs up by the data of default external storage device with a default section in the storage device.Afterwards, write a special data example edition again to above-mentioned preset areas section,, finish the effect of data protection to cover the data of default section Central Plains elder generation.In addition, data in the predeterminable area of storage device do not return back to before the original data as yet, when the system that uses a computer carries out data read to storage device, because the data in the above-mentioned default section are the special data example edition still, make computer system can't do the action of normal access to the data in the above-mentioned section.Therefore, the present invention can protect the data in the storage device effectively.
Though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.Those skilled in the art can do various changes and retouching under the premise without departing from the spirit and scope of the present invention.Therefore, protection scope of the present invention is as the criterion with claims of the present invention.
Claims (16)
1. a data guard method is applicable to a computer system, and aforementioned calculation machine system comprises a storage device, it is characterized in that above-mentioned data guard method comprises the following steps:
When aforementioned calculation machine system carries out a shutdown programm, check whether a default external storage device is connected to aforementioned calculation machine system; And
When carrying out above-mentioned shutdown programm in aforementioned calculation machine system, above-mentioned default external storage device is connected to aforementioned calculation machine system, then with the data backup of a default section in the said storage unit to above-mentioned default external storage device, and produce a Backup Data, then write a special data example edition to above-mentioned preset areas section, to cover the above-mentioned default section Central Plains data of beginning.
2. data guard method according to claim 1 is characterized in that also comprising the following steps:
When aforementioned calculation machine system boot, check whether the data in the above-mentioned default section are above-mentioned special data example edition;
When the data in check finding above-mentioned default section are above-mentioned special data example edition, check then whether above-mentioned default external storage device is connected to aforementioned calculation machine system;
When above-mentioned default external storage device at aforementioned calculation machine system boot, and the data in the above-mentioned default section connect aforementioned calculation machine system when being above-mentioned special data example edition, check then in the above-mentioned default external storage device whether above-mentioned Backup Data is arranged; And
When in checking the above-mentioned default external storage device of discovery, above-mentioned Backup Data being arranged, then above-mentioned Backup Data is write back in the above-mentioned default section.
3. data guard method according to claim 1 is characterized in that wherein above-mentioned default external storage device is a non-volatile memory device.
4. data guard method according to claim 1 is characterized in that wherein above-mentioned default external storage device is to be connected to aforementioned calculation machine system by a connecting interface.
5. data guard method according to claim 1 is characterized in that wherein above-mentioned default section is a main start section.
6. a data guard method is applicable to a computer system, and aforementioned calculation machine system comprises a storage device, it is characterized in that above-mentioned guard method comprises the following steps:
When the operating system of aforementioned calculation machine system during, check whether a default external storage device is connected to aforementioned calculation machine system in an improper user mode; And
When being in above-mentioned improper user mode in the aforesaid operations system, above-mentioned default external storage device is connected to aforementioned calculation machine system, then with the data backup of a default section in the said storage unit to above-mentioned default external storage device, and produce a Backup Data, then write a special data example edition to above-mentioned preset areas section, to cover the above-mentioned default section Central Plains data of beginning.
7. data guard method according to claim 6 is characterized in that also comprising the following steps:
When the aforesaid operations system restart, check whether the data in the above-mentioned default section are above-mentioned special data example edition;
When the data in check finding above-mentioned default section are above-mentioned special data example edition, check then whether above-mentioned default external storage device is connected to aforementioned calculation machine system;
When above-mentioned default external storage device in the aforesaid operations system restart, and the data in the above-mentioned default section connect aforementioned calculation machine system when being above-mentioned special data example edition, check then in the above-mentioned default external storage device whether above-mentioned Backup Data is arranged; And
When in checking the above-mentioned default external storage device of discovery, above-mentioned Backup Data being arranged, then above-mentioned Backup Data is write back in the above-mentioned default section, to reply the original data in the above-mentioned default section.
8. data guard method according to claim 6 is characterized in that wherein above-mentioned improper user mode comprises dormant state, power down mode or user's exit state.
9. data guard method according to claim 6 is characterized in that wherein above-mentioned default external storage device is a non-volatile memory device.
10. data guard method according to claim 6 is characterized in that wherein above-mentioned default external storage device is to be coupled to aforementioned calculation machine system by a connecting interface.
11. data guard method according to claim 6 is characterized in that wherein above-mentioned default section is a main start section.
12. the management method of a storage device access right is suitable for managing the computer system with a plurality of storage devices, it is characterized in that above-mentioned management method comprises the following steps:
System carries out a shutdown programm when the aforementioned calculation machine, and the operating system of aforementioned calculation machine system checks whether a default external storage device is connected to aforementioned calculation machine system when an improper user mode the two one of them; And
When checking that the above-mentioned default external storage device of discovery has connected aforementioned calculation machine system, then select above-mentioned these storage devices at least the data backup in the default section of one in one of them to above-mentioned default external storage device, and produce a Backup Data, then write a special data example edition to above-mentioned preset areas section, to cover the above-mentioned default section Central Plains data of beginning, so that the data in the selecteed storage device can't be normally by access.
13. management method according to claim 12 is characterized in that also comprising the following steps:
When aforementioned calculation machine system boot or aforesaid operations system restart, check whether the data in the above-mentioned default section are above-mentioned special data example edition;
When the data in check finding above-mentioned default section are above-mentioned special data example edition, check then whether above-mentioned default external storage device is connected to aforementioned calculation machine system;
When above-mentioned default external storage device at aforementioned calculation machine system boot, and the data in the above-mentioned default section connect aforementioned calculation machine system when being above-mentioned special data example edition, check then in the above-mentioned default external storage device whether above-mentioned Backup Data is arranged; And
When in check finding above-mentioned default external storage device, above-mentioned Backup Data being arranged, then above-mentioned Backup Data is write back in the above-mentioned default section of storage device of selected protection, so that the storage device of selected protection can be normally by access.
14. management method according to claim 12 is characterized in that wherein selecting the step of storage device, according to the state of a default mark, and selects above-mentioned these storage devices wherein to protect one of at least.
15. management method according to claim 12 is characterized in that wherein above-mentioned improper user mode comprises dormant state, power down mode or user's exit state.
16. management method according to claim 12 is characterized in that wherein above-mentioned default section is a main start section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710181606XA CN101414284A (en) | 2007-10-19 | 2007-10-19 | Data protection method and access authority management method |
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| CNA200710181606XA CN101414284A (en) | 2007-10-19 | 2007-10-19 | Data protection method and access authority management method |
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| CN101414284A true CN101414284A (en) | 2009-04-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226680A (en) * | 2013-04-27 | 2013-07-31 | 三星半导体(中国)研究开发有限公司 | Shutdown protection method and device |
| CN105528307A (en) * | 2015-11-27 | 2016-04-27 | 联想(北京)有限公司 | Information processing method and electronic device |
| WO2016112567A1 (en) * | 2015-01-14 | 2016-07-21 | 宇龙计算机通信科技(深圳)有限公司 | Safety information management method, device and terminal |
| CN110365839A (en) * | 2019-07-04 | 2019-10-22 | Oppo广东移动通信有限公司 | Closedown method, device, medium and electronic equipment |
-
2007
- 2007-10-19 CN CNA200710181606XA patent/CN101414284A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226680A (en) * | 2013-04-27 | 2013-07-31 | 三星半导体(中国)研究开发有限公司 | Shutdown protection method and device |
| WO2016112567A1 (en) * | 2015-01-14 | 2016-07-21 | 宇龙计算机通信科技(深圳)有限公司 | Safety information management method, device and terminal |
| CN105847221A (en) * | 2015-01-14 | 2016-08-10 | 宇龙计算机通信科技(深圳)有限公司 | Security information management method and apparatus, and terminal |
| EP3139300A4 (en) * | 2015-01-14 | 2017-09-20 | Yulong Computer Telecommunication Scientific (Shenzhen) Co., Ltd. | Safety information management method, device and terminal |
| CN105847221B (en) * | 2015-01-14 | 2019-10-11 | 宇龙计算机通信科技(深圳)有限公司 | A kind of management method of security information, device and terminal |
| CN105528307A (en) * | 2015-11-27 | 2016-04-27 | 联想(北京)有限公司 | Information processing method and electronic device |
| CN105528307B (en) * | 2015-11-27 | 2019-03-29 | 联想(北京)有限公司 | A kind of method and electronic equipment of information processing |
| CN110365839A (en) * | 2019-07-04 | 2019-10-22 | Oppo广东移动通信有限公司 | Closedown method, device, medium and electronic equipment |
| CN110365839B (en) * | 2019-07-04 | 2020-08-28 | Oppo广东移动通信有限公司 | Shutdown method, shutdown device, shutdown medium and electronic equipment |
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