CN101782950B - Communication control system and method between mainboard and on-board equipment - Google Patents
Communication control system and method between mainboard and on-board equipment Download PDFInfo
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- CN101782950B CN101782950B CN2009101051207A CN200910105120A CN101782950B CN 101782950 B CN101782950 B CN 101782950B CN 2009101051207 A CN2009101051207 A CN 2009101051207A CN 200910105120 A CN200910105120 A CN 200910105120A CN 101782950 B CN101782950 B CN 101782950B
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Abstract
The invention discloses a communication control system between a mainboard and onboard equipment, which comprises: when the mainboard is started, the main BIOS unit has the system boot control right; the extended BIOS unit is connected with the main BIOS unit and used for obtaining the boot control right from the main BIOS unit and judging whether the system meets the preset control condition or not, if so, the boot control right is returned to the main BIOS unit; and the onboard operating system is connected with the extended BIOS unit and is used for carrying out communication data interaction with the extended BIOS unit under the condition that the extended BIOS unit has the boot control right. The invention also discloses a corresponding communication control method between the mainboard and the onboard equipment. The invention provides a novel security encryption and verification scheme with high confidentiality and high expandability.
Description
Technical field
The present invention relates to Computerized Information Processing Tech, relate in particular to a kind of mainboard and plate and carry communication control system and method between the equipment.
Background technology
In the prior art, normally adopt following two kinds of methods that master operating system is carried out the security information checking, comprise enciphering/deciphering configuration, enciphering/deciphering etc.:
1, the security information checking of when master operating system starts, carrying out, in this case, the assailant is easy to crack its safety verification information, invasive system;
2, be that before master operating system started, (Basic Input/Output System BIOS) carried out the security information checking to user or access device to the Basic Input or Output System (BIOS) of mainboard as a additional project to above-mentioned safe verification method.But, because the safety verification information of BIOS is unified usually, therefore; As long as the assailant knows the authorization information of BIOS; Also be easy to crack the safety verification of BIOS, even also occurred the software of some brush BIOS at present, even do not knowing under the situation of authorization information; Use this software that BIOS is refreshed, also can crack its safety verification function.
In sum, no matter be the safety verification function of master operating system or BIOS, its reliability is all very low.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of mainboard and plate to carry the communication control system between the equipment, this system can provide reliable safety verification function, under the situation that main BIOS checking was lost efficacy, still can carry out effective safety certification to system.
The further problem to be solved of the present invention is: provide a kind of mainboard and plate to carry the communication control method between the equipment, this method can provide reliable safety verification scheme, under the situation that main BIOS checking was lost efficacy, still can carry out effective safety certification to system.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of mainboard and plate carry the communication control system between the equipment, comprising:
When mainboard starts, have the main BIOS unit of system bootstrap control; And
Expanded BIOS unit links to each other with said main BIOS unit, is used for obtaining to guide control from said main BIOS unit, and judges whether system satisfies preset controlled condition, if then will guide control to return main BIOS unit;
Plate carries operating system, links to each other with said expanded BIOS unit, is used for having under the state that guides control in said expanded BIOS unit, communicates data interaction with said expanded BIOS unit,
Link to each other with said main BIOS unit, through the master operating system of said main BIOS unit guides startup; And
The interface driver element carries operating system with said master operating system and plate and links to each other, and is used to realize that the communication data that said master operating system and plate carry between the operating system is mutual.
Correspondingly, the invention also discloses a kind of mainboard and plate and carry the communication control method between the equipment, comprising:
Obtain guiding power step, when mainboard started, main BIOS unit detected plate and carries equipment and have expanded BIOS unit, then will guide control to give said expanded BIOS unit;
The Control on Communication step has under the state that guides control in expanded BIOS unit, and plate carries operating system and said expanded BIOS unit communicates data interaction;
Guiding power is returned step, and the result of communication that carries operating system and expanded BIOS unit based on plate judges whether system satisfies preset controlled condition, if, then will guide control to return main BIOS unit,
Said Control on Communication step specifically includes:
Encryption and decryption performance element in the expanded BIOS unit sends the decoding request of asking to obtain encrypted device decrypts information through the configuration performance element to the configuration response module that plate carries operating system;
The encryption and decryption respond module receives after the decoding request that the configuration response module issues, and the decryption information of said encrypted equipment is returned to the configuration performance element through the configuration response module;
The encryption and decryption performance element is carried out decryption oprerations according to the decryption instructions that the configuration performance element issues to encrypted equipment, and decrypted result is returned to said configuration performance element;
The control buanch unit of expanded BIOS unit obtains decrypted result from said configuration performance element, and judges whether successful decryption, if, then will guide control to return main BIOS unit, otherwise, continue to hold the guiding control.
The invention has the beneficial effects as follows:
Embodiments of the invention are through utilizing plate and carry the operation of equipment system and mainboard communicating data interaction; Mainboard is carried out safety verification; A kind of new reliable safety verification scheme is provided, under the situation that main BIOS checking was lost efficacy, still can have carried out effective safety certification system.
Below in conjunction with accompanying drawing the present invention is made further detailed description.
Description of drawings
Fig. 1 is the composition structural drawing that mainboard provided by the invention and plate carry the embodiment of communication control system between the equipment.
Fig. 2 is the method flow diagram that mainboard provided by the invention and plate carry the embodiment of communication control method between the equipment.
Fig. 3 is that mainboard provided by the invention and plate carry the method flow diagram of carrying out a decryption processing when under the HD encryption pattern, starting shooting among the embodiment of communication control method between the equipment.
Fig. 4 is that mainboard provided by the invention and plate carry the method flow diagram of carrying out a decryption processing when under the HD encryption pattern, starting shooting among the embodiment of communication control method between the equipment.
Fig. 5 is that mainboard provided by the invention and plate carry among the embodiment of communication control method between the equipment
Embodiment
With reference to figure 1, this figure is the composition structural drawing that mainboard provided by the invention and plate carry the embodiment of communication control system between the equipment; As shown in the figure, present embodiment mainly includes:
When mainboard starts, have the main BIOS unit 1 of system bootstrap control; And
Expanded BIOS unit 2; Link to each other with said main BIOS unit 1, be used for obtaining to guide control, and judge whether system satisfies preset controlled condition from said main BIOS unit; If; Then will guide control to return main BIOS unit, when specifically realizing, said preset controlled condition can be start successful decryption, configuration successful etc.;
Plate carries operating system 3, links to each other with said expanded BIOS unit, is used for having under the state of said guiding control in expanded BIOS unit communicating data interaction with said expanded BIOS unit.
In addition, present embodiment also includes:
Link to each other with said main BIOS unit 1, through the master operating system 4 of said main BIOS unit guides startup; And
Interface driver element 5; Carrying operating system with said master operating system 1 with plate links to each other; Be used to realize that said master operating system and plate carry the communication data mutual (security information exchange) between the operating system; During concrete the realization, said interface driver element 5 can comprise the PCI driver element that depends on master operating system and depend on two parts of PCI driver element that plate carries operating system.
During concrete the realization, said plate carries operating system 3 and can further include:
Configuration response module 31; Link to each other with said expanded BIOS unit; Be used for after the configuring request that carries encrypted facility information that receives from expanded BIOS unit, said encrypted facility information carried out enciphering/deciphering handle, and return the configuration echo message to said expanded BIOS unit;
Encryption and decryption respond module 32 links to each other with said configuration response module 31, is used for instructing according to the encryption and decryption that carries encrypted facility information that configuration response module 31 issues, and implements corresponding encryption and decryption and handles, and will return result to configuration response module 31.
The enciphered message of said encrypted equipment is returned to said master operating system through said interface driver element, and when specifically realizing, said encrypted instruction generally is carried in master operating system and carries in the shutdown command of operating system to plate;
Control detection module 33; Link to each other with said expanded BIOS unit; Be used to detect the expanded BIOS unit and whether have said guiding control, if then control said plate and carry operating system and communicate by letter with said expanded BIOS unit; Otherwise, control said plate and carry operating system and communicate by letter with said master operating system through the interface driver element.
Accordingly, said expanded BIOS unit 2 can further include:
Configuration performance element 21; Link to each other with said configuration response module 31; Be used for sending configuring request, and receive the response based on the configuration that the configuration response module is returned and to implement the enciphering/deciphering configuration, and said layoutprocedure and object information are returned to said configuration response module to said configuration response module;
Encryption and decryption performance element 22; Link to each other with said configuration performance element 21,, be used for the enforcement enciphering/deciphering configuration order that issues based on the configuration Executive Module; Carry out corresponding enciphering/deciphering and handle, and enciphering/deciphering is disposed result of implementation return to said configuration performance element 21;
Control buanch unit 23 is used for when mainboard starts, and 1 obtains the guiding control from said main BIOS unit, and determines whether to guide control to give back main BIOS unit based on the result of communication that plate carries operating system and expanded BIOS unit; During concrete the realization, said preset controlled condition can be start successful decryption, configuration successful etc.;
Said master operating system 4 can include:
Encrypt performance element 41; Link to each other with said configuration response module 31 through said interface driver element 5; The enciphering request that is used for carrying encrypted facility information sends to configuration response module 31 through interface driver element 5; Enciphered message according to the configuration response module is returned is carried out encryption to encrypted equipment, and encrypted result is returned to said configuration response module.
During concrete the realization, present embodiment also can include:
Plate carries IO driver element 6, is connected said expanded BIOS unit and plate and carries between the operating system, is used to carry out the communication data that said expanded BIOS system and said plate carry between the operating system and transmits.
Network control module 7; Being arranged on plate carries in the equipment; Carrying operating system with said plate links to each other with extraneous server; Be used for said configuration information, enciphered message or decryption information sent on the extraneous server and preserve, and obtain configuration information, enciphered message or the decryption information of its preservation from extraneous server.
During concrete the realization, said plate carries operating system can adopt (SuSE) Linux OS.
In addition,, also can carry a upgrading module is set in the operating system, be used for plate is carried operating system and expanded BIOS unit is carried out firmware upgrade at said plate for the extendability that guarantees present embodiment is considered.
Describe the embodiment that mainboards provided by the invention and plate carry the communication control method between the equipment in detail with reference to figure 2 below.As shown in Figure 2, the Control on Communication that mainboard of present embodiment execution and plate carry between the equipment mainly comprises following flow process:
Obtain guiding power step S1, when mainboard started, main BIOS unit detected plate and carries equipment and have expanded BIOS unit, then will guide control to give said expanded BIOS unit;
Control on Communication step S2, plate carry operating system and detect expanded BIOS unit and have the guiding control, then communicate data interaction with said expanded BIOS unit;
Guiding power is returned step S3; The result of communication that carries operating system and expanded BIOS unit according to plate judges whether system satisfies preset controlled condition; If; Then will guide control to return main BIOS unit, when specifically realizing, said preset controlled condition can be start successful decryption, configuration successful etc.
During concrete the realization, said expanded BIOS unit and plate carry and carry the IO driver module through plate between the operating system and communicate data forwarding.
During concrete the realization; After main BIOS unit obtains the guiding control, can guide control to start master operating system, after master operating system starts; Plate carries operating system and detects master operating system and have control, can communicate data interaction through interface driver element and master operating system.
The hypothesis access device is a hard disk below, to be encrypted as example during shutdown under deciphering during start, the HD encryption pattern under HD encryption or deciphering configuration, the HD encryption pattern, describes the communication control process of present embodiment in detail respectively.
With reference to figure 3, on the one hand, carry out a decryption processing when present embodiment is started shooting and specifically may further comprise the steps under the HD encryption pattern:
When S10, main BIOS unit starting, detect expanded BIOS unit, then will guide control to give expanded BIOS unit;
S11, plate carry operating system and detect expanded BIOS unit and have the guiding control; Then communicate by letter, and the encryption and decryption performance element of expanded BIOS unit sends the decoding request of asking to obtain encrypted device decrypts information through the configuration performance element to the configuration response module that plate carries operating system with expanded BIOS unit;
S12, encryption and decryption respond module receive after the decoding request that the configuration response module issues, and the decryption information of said encrypted equipment is returned to the configuration performance element through the configuration response module;
S13, encryption and decryption performance element are carried out decryption oprerations according to the decryption instructions that the configuration performance element issues to encrypted equipment, and in step S14, decrypted result are returned to said configuration performance element;
After S15, said process finished, the configuration response module can be preserved decrypted result information.
After S16, decrypting process finished, the control buanch unit of expanded BIOS unit obtained decrypted result from said configuration execution module, and judges whether successful decryption; If; Then will guide control to return main BIOS unit, otherwise, continue to hold the guiding control; And where necessary, the prompting user handles it.
Carrying out an encryption when on the other hand, present embodiment shuts down under the HD encryption pattern specifically may further comprise the steps:
When S20, master operating system carried operating system transmission shutdown command to plate, it was encrypted performance element and in shutdown command, adds the encrypted instruction that carries hard disk information, sends to the configuration response module that plate carries operating system through the interface driver element;
S21, configuration response module issue encrypted instruction to the encryption and decryption execution module, and the enciphered message that the encryption and decryption execution module returns is returned to said encryption performance element through said interface driver element;
S23, encryption performance element are encrypted with according to said enciphered message hard disk being carried out, and in step S24, encrypted result are returned to said configuration response module.
After S25, said process finished, the configuration response module can be preserved said encrypted result.
With reference to figure 5, on the other hand, present embodiment is carried out a hard disk enciphering/deciphering configuration process and specifically may further comprise the steps:
S30, at first; When main BIOS starts; The user can be by prompting input validation password; Promptly get into the configuration interface of expanded BIOS unit after checking is passed through, this interface provides two kinds of configuration modes: HD encryption pattern or decryption mode, and the user can choose any one kind of them based on needs; During concrete the realization; Select the user under the situation of encryption mode, expanded BIOS unit is obtained the hard disk information that needs in step S31;
After expanded BIOS unit was accepted the configuration mode of user's selection, configuration procedure formally begins, and was specific as follows:
The configuration performance element of S32, expanded BIOS unit sends configuring request to the configuration response module that plate carries operating system, when specifically realizing, if be encryption mode, carries hard disk information in this request;
After S33, configuration response module receive said configuring request, hard disk information is implemented encryption/decryption process, and in step S34, return configuration to said configuration performance element and receive the response;
S35, configuration performance element implement enciphering/deciphering and handle according to receive the response in the bag hard disk information that carries of configuration, and layoutprocedure and object information are returned to said configuration response module;
After S36, configuration response module are received configuration result information, can it be preserved.
After above-mentioned steps was accomplished, in step S37, expanded BIOS unit can be sent one to main BIOS unit and restarted request, after the system restart, and configuration take-effective.
During concrete the realization; In said encrypting step, decryption step or configuration step; The configuration response module sends to the enciphering/deciphering configuration information on the extraneous server through network control module and preserves, and obtains the enciphering/deciphering configuration information of its preservation from extraneous server.Because above-mentioned various security information are stored in the extraneous server, thereby make safety verification information not influenced by local hardware, and are more reliable.
In addition, present embodiment also provides the disposal route of the abnormal conditions that in the practical implementation process, possibly occur.It can reduce unusually and be described below:
Configuration takes place to divide following several kinds of situation unusually when 1, starting shooting,
A, when the HD encryption pattern configurations is the hard disk decryption mode, take place unusual, comprising:
What taken place when A1, configuring request have been sent out is unusual;
A2, hard disk decryption information issue, and expanded BIOS unit has received that this information is unusual when still implementing HD encryption;
A3, hard disk decryption information issue, and expanded BIOS unit is not received the unusual of this information;
A4, the deciphering of enforcement hard disk are accomplished, and be inconsistent but the FLASH of expanded BIOS unit and plate carry the state value of storing on the equipment;
B, when the hard disk decryption mode is configured to the HD encryption pattern, take place unusual, comprising:
What taken place when B1, configuring request have been sent out is unusual;
B2, HD encryption information issue, and is unusual but expanded BIOS unit has been received when implementing HD encryption;
B3, HD encryption information issue, and expanded BIOS unit is not received the unusual of this information;
B4, enforcement HD encryption are accomplished, and be inconsistent but the FLASH of expanded BIOS unit and plate carry the state value of storing on the equipment;
Take place unusual when C, initial configuration HD encryption pattern.
2, the abnormal conditions of start deciphering under the encryption mode are with above-mentioned similar.
3, the abnormal conditions that shutdown is encrypted under the encryption mode are with above-mentioned similar.
During concrete the realization, can compare and the hard disk information that both sides have compared through the state value that mainboard and plate is carried the equipment both sides and eliminate unusually, it is recovered normally.
The present invention is through utilizing plate and carry the operation of equipment system and mainboard communicating data interaction; Mainboard is carried out safety verification; A kind of new reliable safety verification scheme is provided, under the situation that main BIOS checking was lost efficacy, still can have carried out effective safety certification system.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also are regarded as protection scope of the present invention.
Claims (8)
1. mainboard and plate carry the communication control system between the equipment, it is characterized in that this system includes:
When mainboard starts, have the main BIOS unit of system bootstrap control; And
Expanded BIOS unit links to each other with said main BIOS unit, is used for obtaining to guide control from said main BIOS unit, and judges whether system satisfies preset controlled condition, if then will guide control to return main BIOS unit;
Plate carries operating system, links to each other with said expanded BIOS unit, is used for having under the state that guides control in said expanded BIOS unit, communicates data interaction with said expanded BIOS unit;
Link to each other with said main BIOS unit, through the master operating system of said main BIOS unit guides startup; And
The interface driver element carries operating system with said master operating system and plate and links to each other, and is used to realize that the communication data that said master operating system and plate carry between the operating system is mutual.
2. mainboard as claimed in claim 1 and plate carry the communication control system between the equipment, it is characterized in that, said plate carries operating system and further includes:
The control detection module; Link to each other with said expanded BIOS unit; Be used to detect expanded BIOS unit and whether have said guiding control, if then control said plate and carry operating system and communicate by letter with said expanded BIOS unit; Otherwise, control said plate and carry operating system and communicate by letter with said master operating system through the interface driver element;
The configuration response module; Link to each other with said expanded BIOS unit; Be used for after the configuring request that carries encrypted facility information that receives from expanded BIOS unit, said encrypted equipment carried out enciphering/deciphering handle, and return configuration to said expanded BIOS unit and receive the response;
The encryption and decryption respond module links to each other with said configuration response module, is used to receive the enciphering/deciphering that the issues instruction of configuration response module, carries out corresponding enciphering/deciphering and handles, and return process information to said configuration response module.
3. mainboard as claimed in claim 2 and plate carry the communication control system between the equipment, it is characterized in that, said expanded BIOS unit further includes:
The configuration performance element; Link to each other with said configuration response module; Be used for sending configuring request, and implement the enciphering/deciphering configuration, and configuration result information is returned to said configuration response module based on the configuration echo message that the configuration response module is returned to said configuration response module;
The encryption and decryption performance element links to each other with said configuration performance element, is used for carrying out corresponding enciphering/deciphering and handling according to the enforcement enciphering/deciphering configuration order that issues of configuration performance element, and enciphering/deciphering is disposed result of implementation returns to said configuration performance element;
The control buanch unit; Be used for when mainboard starts, obtain the guiding control from said main BIOS unit, and judge the whether satisfied controlled condition of presetting of system based on the result of communication that plate carries operating system and expanded BIOS unit; If then will guide control to give back main BIOS unit;
And said master operating system includes:
Encrypt performance element; Link to each other with said configuration response module through said interface driver element; The enciphering request that is used for carrying encrypted facility information sends to said configuration response module through said interface driver element; Enciphered message according to the configuration response module is returned is carried out encryption to encrypted equipment, and encrypted result is returned to said configuration response module.
4. mainboard as claimed in claim 3 and plate carry the communication control system between the equipment, it is characterized in that, this system also includes:
Plate carries the IO driver element, is connected said expanded BIOS unit and plate and carries between the operating system, is used to carry out the data message that said expanded BIOS unit and said plate carry between the operating system and transmits;
Network control module; Being arranged on plate carries in the equipment; Carry operating system with said plate and link to each other, be used for enciphered message or decryption information sent on the extraneous server and preserve, and obtain configuration information, enciphered message or the decryption information of its preservation from extraneous server with extraneous server.
5. mainboard and plate carry the communication control method between the equipment, and this method is carried the communication control system between the equipment based on mainboard as claimed in claim 3 and plate, it is characterized in that, this method includes:
Obtain guiding power step, when mainboard started, main BIOS unit detected plate and carries equipment and have expanded BIOS unit, then will guide control to give said expanded BIOS unit;
The Control on Communication step has under the state that guides control in expanded BIOS unit, and plate carries operating system and said expanded BIOS unit communicates data interaction;
Guiding power is returned step, and the result of communication that carries operating system and expanded BIOS unit based on plate judges whether system satisfies preset controlled condition, if, then will guide control to return main BIOS unit,
Said Control on Communication step specifically includes:
Encryption and decryption performance element in the expanded BIOS unit sends the decoding request of asking to obtain encrypted device decrypts information through the configuration performance element to the configuration response module that plate carries operating system;
The encryption and decryption respond module receives after the decoding request that the configuration response module issues, and the decryption information of said encrypted equipment is returned to the configuration performance element through the configuration response module;
The encryption and decryption performance element is carried out decryption oprerations according to the decryption instructions that the configuration performance element issues to encrypted equipment, and decrypted result is returned to said configuration performance element;
The control buanch unit of expanded BIOS unit obtains decrypted result from said configuration performance element, and judges whether successful decryption, if, then will guide control to return main BIOS unit, otherwise, continue to hold the guiding control.
6. mainboard as claimed in claim 5 and plate carry the communication control method between the equipment, it is characterized in that, said Control on Communication step also includes:
The encryption performance element of master operating system sends the encrypted instruction that carries encrypted facility information through the interface driver element to the configuration response module that plate carries operating system;
The configuration response module issues encrypted instruction to the encryption and decryption respond module, and the enciphered message that the encryption and decryption respond module is returned is returned to said encryption performance element through said interface driver element;
Encrypt performance element and encrypted equipment is carried out encryption, and encrypted result is returned to said configuration response module according to said enciphered message.
7. mainboard as claimed in claim 6 and plate carry the communication control method between the equipment, it is characterized in that, said Control on Communication step also includes:
Under encryption mode, the configuration performance element of expanded BIOS unit sends the configuring request that carries hardware information to the configuration response module that plate carries operating system;
After the configuration response module receives said configuring request, hardware information is implemented encryption/decryption process, and return configuration to said configuration performance element and receive the response;
The configuration performance element is receiveed the response according to said configuration and is implemented the enciphering/deciphering processing, and said layoutprocedure and object information are returned to said configuration response module.
8. mainboard as claimed in claim 7 and plate carry the communication control method between the equipment, it is characterized in that, said expanded BIOS unit and plate carry between the operating system and carry IO driver element forwarding data message through plate;
In said encrypting step, decryption step or configuration step, plate carries operating system and through network control module the enciphering/deciphering configuration information is sent on the extraneous server and preserve, and obtains the enciphering/deciphering configuration information of its preservation from extraneous server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101051207A CN101782950B (en) | 2009-01-16 | 2009-01-16 | Communication control system and method between mainboard and on-board equipment |
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| CN2009101051207A CN101782950B (en) | 2009-01-16 | 2009-01-16 | Communication control system and method between mainboard and on-board equipment |
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| CN101782950A CN101782950A (en) | 2010-07-21 |
| CN101782950B true CN101782950B (en) | 2012-05-30 |
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| CN103593629B (en) * | 2013-10-15 | 2016-09-14 | 航天科工深圳（集团）有限公司 | A kind of board identification encryption device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0936548A1 (en) * | 1998-02-05 | 1999-08-18 | Compaq Computer Corporation | Automatic system recovery |
| CN1514970A (en) * | 2001-06-29 | 2004-07-21 | 英特尔公司 | Automatic replacement of corrupted BIOS image |
| CN101105755A (en) * | 2006-06-29 | 2008-01-16 | Lg电子株式会社 | Portable apparatus supporting multiple operating systems and supporting method therefor |
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2009
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0936548A1 (en) * | 1998-02-05 | 1999-08-18 | Compaq Computer Corporation | Automatic system recovery |
| CN1514970A (en) * | 2001-06-29 | 2004-07-21 | 英特尔公司 | Automatic replacement of corrupted BIOS image |
| CN101105755A (en) * | 2006-06-29 | 2008-01-16 | Lg电子株式会社 | Portable apparatus supporting multiple operating systems and supporting method therefor |
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