KR20100010902A - Mobile terminal operation lock system and method thereof - Google Patents

Abstract

PURPOSE: A mobile terminal operation lock system and a method thereof are provided to notice a reply contact number of a person who originally owns a mobile terminal on a standby screen, thereby easily recognizing the reply contact number. CONSTITUTION: When a reply contact setup signal is received, a command performing unit(108) controls a display unit(112) to notice a loss guide message including a reply message. When a terminal lock signal is received, the command performing unit controls an input unit(114) to ignore a part of input signals. The display unit notices the loss guide message including the reply contact. The input unit ignores an input signal except a signal for call origination to the reply contact and an incoming call by control of the command performing unit.

Description

Mobile terminal operation lock system and method

The present invention relates to a mobile terminal function locking system and method thereof. In more detail, a function lock command and a reply contact are sent to a mobile terminal that needs to restrict the function for reasons such as theft or loss, so that the mobile terminal locks all functions except for call origination to the reply contact. The present invention relates to a mobile terminal function lock system and a method for posting a lost guidance message including the reply contact information on a display provided in the mobile terminal.

Until now, when a user loses or is stolen a mobile terminal, it has been a general solution to limit the communication function of the terminal. In other words, the use of the terminal by the lost terminal learner is prevented by the method of stopping the call or stopping the receiving and sending. If the above communication function restriction method is used, the use of the mobile communication network of the terminal can be prevented from being charged, but the best solution is not to induce the terminal learner to contact the owner of the terminal. Could not be.

In addition, recent mobile terminals are often provided with functions for storing and managing personal information as well as sending and receiving calls and text messages. If such a mobile terminal is lost, leakage of personal information stored in the terminal also becomes a problem. . Therefore, there is a need for a terminal function remote control platform including a call function limitation, a restriction on the viewing function of personal information, and the like. The platform should have a hardware-independent structure to be applied to terminals of different models.

Made in response to this demand, the Lock And Wipe Mobile Object standard (hereinafter referred to as the "LAWMO standard") of the Open Mobile Alliance (hereinafter referred to as "OMA"). The standard is not officially published and is still a candidate version. However, if it is necessary to limit the function of a mobile terminal such as lost or stolen, the command is transmitted to the mobile terminal by wireless communication. A system for limiting the function of the mobile terminal is defined.

However, according to the LAWMO standard, there is only a function to lock the function of the mobile terminal as a whole, or to lock some functions, to post the contact of the elementary user to recover the lost or stolen mobile terminal, and to call the elementary user to the contact. There is a problem that there is no function for inducing outgoing.

The technical problem to be solved by the present invention is to solve the above problems, when the function limit signal and the return contact setting signal is provided, the function is limited, the display unit provided with a lost guidance message including the reply contact It is to provide a mobile terminal to publish.

The technical problem to be solved by the present invention is to solve the above problems, to provide a mobile terminal function limitation system and method for limiting the function of the mobile terminal according to the request of the original owner.

The technical problem to be solved by the present invention is to solve the above problems, and not only to limit the function of the lost or stolen mobile terminal, but also to contact the owner of the element user in the mobile terminal so that the learner can easily contact the element owner It is to provide a system and method for limiting the mobile terminal function to post.

The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, a mobile terminal controls a display unit to post a lost guidance message including a reply contact when a reply contact setting signal including a reply contact is received, and a terminal lock scene. A command execution unit that controls the input unit to ignore some input signals when a call is received; A display unit for posting a lost guidance message including the reply contact number under the control of the command execution unit; And an input unit for ignoring an input signal except for answering an incoming call and originating a call to the reply contact number under the control of the command execution unit.

The mobile terminal function locking system according to another aspect of the present invention for achieving the above technical problem is a device management server for transmitting a terminal contact signal including a reply contact setting signal including a reply contact or a terminal lock signal to lock a part of the terminal to the mobile terminal; ; And receiving the reply contact setting signal from the device management server, posting a lost guidance message including the reply contact, receiving the terminal lock signal from the device management server, and responding to a call origination or incoming call to the reply contact. It includes a mobile terminal to lock the excluded function.

According to another aspect of the present invention, there is provided a method for locking a function of a mobile terminal, comprising: receiving a reply contact setting signal and a terminal lock signal including a reply contact; And receiving the reply contact setting signal and posting the reply contact on a display provided with the reply contact, receiving the terminal lock signal, and locking all functions except the function of sending a call to the reply contact and answering an incoming call. Include.

Mobile terminal function lock control method according to another aspect of the present invention for achieving the above technical problem is a control initialization signal to execute a DM client for transmitting and receiving signals by the OMA (Open Mobile Alliance) Device Management (DM) protocol Transmitting to the lost terminal; Receiving a DM client execution result from the lost terminal; And if the DM client execution result is successful, transmitting a reply contact setting signal including a reply contact and a terminal lock signal to the lost terminal. The reply contact setting signal and the terminal lock signal are based on an OMA LAWMO (Lock And Wipe Management Object) standard, and the terminal lock signal is one of a FullyLock and PartiallyLock command (Operation), and the reply contact setting signal Is a first node for storing the reply contact added as a child node of the Ext node of the Lock And Wipe (LAW) managed object structure, a second node for posting the reply contact, and the reply contact as the called number when calling. Based on the designating third node, storing the reply contact in the first node, executing the second node, and executing the third node.

According to the present invention as described above, by posting the reply contact of the original owner on the display unit of the mobile terminal, in particular, the standby screen, the learner can easily recognize the reply contact, thereby inducing the contact of the learner.

In addition, by limiting other functions except for the call origination function to the reply contact, there is an effect of preventing an unexpected charge or leaking of personal information stored in the mobile terminal.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms. The embodiments of the present invention make the posting of the present invention complete and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the configuration and operation of a mobile terminal according to an embodiment of the present invention will be described.

First, the configuration and operation of the mobile terminal according to the present embodiment will be described with reference to FIG. 1. 1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 1, the mobile terminal 100 according to the present embodiment includes a communication module 102, an initialization module 104, a termination module 106, a command execution unit 108, a HAL 110, and a display unit. 112, an input unit 114, and a sound output unit 116 may be included.

The communication module 102 is a module for transmitting and receiving a signal through a wireless communication method, and the communication method is, for example, Global Systems for Mobile (GSM), Code Divisional Multiple Access (CDMA), and Wideband Code Divisional Multiple Access (W-CDMA). And the like can be used. The communication module 102 connects the initialization module 104, the termination module 106, and the command execution unit 108 with an external wireless network (not shown) to relay transmission and reception of signals.

When the control initialization signal is received, the initialization module 104 executes the command execution unit 108 if the command execution unit 108 is not running.

The termination module 106 terminates the instruction execution unit 108 when the control execution signal is received, if the instruction execution unit 108 is running.

The command execution unit 108 controls each physical device provided in the terminal through the HAL 110, and in particular, when a reply contact setting signal including the reply contact is received through the communication module 102, the display unit ( Posts the reply contact to 112 and reproduces the alarm sound through the audio output unit 116, and when a terminal lock signal is received through the communication module 102, a part of the input signal input through the input unit 114 Ignore it. The instruction execution unit 108 is executed by the control of the initialization module 104 and is terminated by the control of the termination module 106. The command execution unit 108 may set the lost guidance message to be posted after booting, and input signals other than those for the response of the incoming call and the call origination to the replying contact may be ignored, and then the mobile terminal may be rebooted. . The command execution unit 108 may control the input unit 114 to ignore all input signals except for the call button, and when the call button is pressed, generate a call connection signal using the reply contact as the called party.

The reply contact may be, for example, the telephone number or e-mail of the owner of the mobile terminal member, the home or office address.

The detailed structure of the command execution unit 108 will be described with reference to FIG. 2. The command execution unit 108 may include a LAWMO agent 180 and a device management (DM) client 182 as shown in FIG. 2. The DM client 182 is executed by the initialization command of the initialization module 104 and then initialized, terminated by the termination command of the termination module 106, and received from the communication module 102 of the LAWMO agent 180. Acting as a function call and providing the result via communication module 102.

The LAWMO agent 180 locks all functions (hereinafter referred to as 'FullyLock'), some function locks (hereinafter referred to as 'PartiallyLock'), unlocks (hereinafter referred to as 'UnLock'), and deletes personal information. The operation described in the LAWMO standard (hereinafter, referred to as 'Wipe') is performed, and the result is reported to the DM client 182.

Specific operations of the LAWMO agent 180 and the DM client 182 not mentioned are in accordance with the LAWMO standard version 1.0.

HAL (Handset Adaptation Layer) 110 is a middleware to control the hardware of the mobile terminal 100 including the display unit 112, the input unit 114, the audio output unit 116, the command The execution unit 108 provides each control interface to control the display unit 112, the input unit 114, and the sound output unit 116 of the mobile terminal.

Under the control of the command execution unit 108 through the HAL 110, the display unit 112 posts a lost guidance message including a reply contact. The input unit 114 ignores some input signals under the control of the command execution unit 108 through the HAL 110. The input unit 114 may be, for example, a touch screen or a button. The input unit 114 may ignore the input signal of all buttons except for the call button, for example. The sound output unit 116 reproduces the alarm sound under the control of the command execution unit 108.

Hereinafter, the operation of the mobile terminal 100 according to the present embodiment will be described.

First of all, a control initialization signal is received from an external wireless network (not shown) via the communication module 102. The control initialization signal may be included in, for example, a Short Message Service (SMS) signal. In more detail, PID (Protocol ID) of the SMS header is a value indicating a control initialization signal, and ContentsData parameter of a wireless session protocol (WSP) may also be a signal indicating a control initialization signal. In this case, the initialization module 104 may perform the detection of the control initialization signal by monitoring the PID and ContentsData parameters of the SMS signal. The control initialization signal may mean, for example, package 0 of the OMA DM (Device Management) protocol described in the OMA standard.

When the initialization module 104 detects the control initialization signal, it is determined whether the command execution unit 108 is being performed, and if not, the command execution unit 108 is initialized. In more detail, the DM client 182 of the command execution unit 108 may be initialized. The DM client 182 may perform an authentication operation on the control initialization signal with a digest included in the package 0.

The DM client 182 generates a session ID and generates an initialization report signal including the session ID. The initialization report signal may mean package 1 of the OMA DM protocol.

Thereafter, a reply contact setting signal including the reply contact is received from the external wireless network (not shown) via the communication module 102. In addition, the terminal lock signal may be further received. When the command execution unit 108 receives the reply contact setting signal from the communication module 102, the command execution unit 108 controls the display unit 112 to post the reply contact via the HAL 110. In addition, an alarm sound may be reproduced through the sound output unit 116 through the HAL 110 so that a learner can easily confirm the reply contact.

When the command execution unit 108 receives the terminal lock signal from the communication module 102, the command execution unit 108 controls the input unit 114 to ignore some input signals through the HAL 110. For example, the input unit 114 may be controlled to ignore input signals of all buttons except the call button. On the other hand, when the call button is pressed, the command execution unit 108 may provide a call origination signal to the communication module 102 so that the reply contact is the called party.

It should be noted that, by the control of the input unit 114 as described above, the mobile terminal 100 should not be able to perform any operation other than the operation of the device for receiving a call or the operation of the device for sending a call to the reply contact.

The terminal lock signal and the reply contact setting signal may mean package 2 of the OMA DM protocol. In addition, the terminal lock signal and the return contact setting signal may be based on the LAWMO standard. Hereinafter, a case in which the terminal lock signal and the reply contact setting signal are based on a LAWMO standard will be described.

First, the structure of Lock And Wipe Management Object (hereinafter, referred to as "LAW management object") according to the present embodiment will be described for clarity. 3 is a diagram illustrating a LAW management object structure according to the present embodiment in a tree form. According to FIG. 3, the LAW management object structure according to the present embodiment may include '<x>' among Lock and Wipe management objects (OMA-TS-LAWMO-V1_0-20090317-C, 5.1 Figure of the Management Object) described in the LAWMO standard. In the / Ext 'node (hereinafter referred to as an' extension node '), three leaf nodes,' ContactNum ',' DisplayContactNum ', and' SetReceiverContactNum ', are added.

The Lock And Wipe managed object described in the LAWMO standard has no value set in the extension node. However, according to the present embodiment, the extension node may have three child nodes as child nodes.

The child nodes of the extension node are as follows. '<X> / Ext / ContactNum' leaf node, which stores reply contact data, and '<x> / Ext / ContactNum' leaf node. leaf node '<x> / Ext / SetReceiverContactNum', which controls to designate a returning contact number when a call originates, is stored in the leaf node x> / Ext / DisplayContactNum 'and the' <x> / Ext / ContactNum 'node. It is a child node of the extension node.

Hereinafter, each child node of the extension node will be described in more detail.

TABLE 1

<x> / Ext / ContactNum

Status Occurrence Format Min. Access types Optional ZeroOrOne string Get, Replace

Table 1 shows parameters of the '<x> / Ext / ContactNum' node. The '<x> / Ext / ContactNum' node added in this example is not required (optional) or may be absent, if any, the data type is string, and the access type for ContactNum is at least Notice that it includes Get and Replace. Since Table 1 is only one embodiment, it should be noted that the parameter of the node '<x> / Ext / ContactNum' may not be the same as Table 1.

TABLE 2

<x> / Ext / DisplayContactNum

Status Occurrence Format Min. Access types Optional One null Exec

Table 2 shows parameters of the '<x> / Ext / DisplayContactNum' node. The '<x> / Ext / DisplayContactNum' node added in this embodiment is not necessarily required (Optional), there can be one, it can be seen that the node (Execution) rather than the node that stores a certain value. Since Table 2 is only one embodiment, it should be noted that the parameter of the '<x> / Ext / DisplayContactNum' node may not exist as shown in Table 2.

TABLE 3

<x> / Ext / SetReceiverContactNum

Status Occurrence Format Min. Access types Optional One null Exec

Table 3 shows parameters of the '<x> / Ext / SetReceiverContactNum' node. The '<x> / Ext / SetReceiverContactNum' node added in this embodiment is not necessarily required (Optional), there can be one, it can be seen that the node (Execution) node, not a node that stores any value. Since Table 3 is only an embodiment, it should be noted that a parameter of the node '<x> / Ext / DisplayContactNum' may not exist as shown in Table 3.

Hereinafter, the content of the reply contact setting signal using the child node of the extension node will be described.

The reply contact setting signal replaces the data stored in the '<x> / Ext / ContactNum' node with the data of the reply contact included in the reply contact setting signal, and then executes the '<x> / Ext / DisplayContactNum' node. Post reply contacts stored in the '<x> / Ext / ContactNum' node to the display unit 112 and execute the '<x> / Ext / DisplayContactNum' node to designate the reply contact as a called number when the call is originated. It may be to control to.

When the reply contact setting signal is in the above example, the DM client 182 receives the reply contact setting signal from the communication module 102 and transmits the '<x> / Ext / ContactNum' node to the LAWMO agent 180. Command to replace the value with the reply contact included in the reply contact set signal. In addition, the DM client 182 instructs the LAWMO agent 180 to execute the '<x> / Ext / DisplayContactNum' node. Finally, the DM client 182 instructs the LAWMO agent 180 to execute the '<x> / Ext / SetReceiverContactNum' node. Note that the SetReceiverContactNum node may be executed before the DisplayContactNum node.

The LAWMO agent 180 sets the value of the '<x> / Ext / ContactNum' node as the reply contact data included in the reply contact setting signal according to the command of the DM client 182, and through the HAL 110. The display 112 is controlled to post the reply contact. 4 is an example in which the lost guidance message including the reply contact information is posted on the display 112. In addition, the reply contact is designated as the called number when the call originated.

The terminal lock signal may be at least one of a FullyLock command and a PartiallyLock operation of the LAWMO standard. That is, the terminal lock signal may be, for example, executing at least one of a '<x> / Operations / FullyLock' node or a '<x> / Operations / PartiallyLock' node. In this case, the DM client 182 receives the terminal lock signal from the communication module 102 and transmits the LAWMO agent 180 to the '<x> / Operations / FullyLock' node or the '<x> / Operations / PartiallyLock' node. Instruct at least one to execute. The LAWMO agent 180 controls the input unit 114 through the HAL 110 to ignore some input signals by the command. For example, the input unit 114 may be controlled to ignore input signals of all buttons except the call button. It should be noted that, as a result of the execution of the FullyLock or PartiallyLock, the mobile terminal 100 should not be able to perform any operation other than the operation of the device for receiving a call or the operation of the device for sending a call to the reply contact.

The LAWMO agent 180 provides the DM client 182 with a signal for reporting the execution result of the command corresponding to the reply contact setting signal and the terminal lock signal. The report signal may mean, for example, Package 3 of the OMA DM protocol.

Finally, a control end signal is received from the external wireless network (not shown) via the communication module 102. The control end signal may mean package 4 of the OMA DM protocol. The termination module 106 receives the control termination signal from the communication module 102 to terminate the DM client 182.

The DM client 182 may set the command corresponding to the reply contact setting signal and the terminal lock signal to be executed after booting, and then allow the mobile terminal 100 to reboot. The rebooting is preferably performed only when the mobile terminal 100 is locked when the reply contact setting signal and the terminal lock signal are received. Whether it is locked can be determined by checking the value of the State node of the LAWMO standard.

Hereinafter, the configuration and operation of a mobile terminal function locking system according to another embodiment of the present invention will be described with reference to FIG. 5. 5 is a configuration diagram of a mobile terminal function lock system according to the present embodiment. As shown in FIG. 5, the mobile terminal function locking system according to the present embodiment may include a message server 500, a central management server 502, a device management server 504, and a mobile terminal 100.

The central management server 502 receives and stores the identification number of the lost terminal and the telephone number of the reply terminal from the original owner of the lost terminal, and transmits a control initialization signal to the message server as the called party. Provide the request signal. The lost terminal identification number may be, for example, at least one of a mobile subscriber ISDN (MSISDN), a terminal identification number (International MS Equipment Identity (IMEI)), and a serial number assigned by the terminal manufacturer.

The central management server 502 provides the lost terminal identification number and the return terminal telephone number to the device management server 504.

The message server 500 generates the control initialization signal when receiving the control initialization signal transmission request from the central management server 502. The control initialization signal is preferably included in the SMS signal. In more detail, the PID of the SMS header may be a value indicating a control initialization signal, and the ContentsData parameter of the WSP may also be a signal indicating a control initialization signal. The message server 500 transmits the generated control initialization signal using the lost terminal number as a called party.

A device management server (DMS) 504 is a device for providing the terminal reply contact setting signal or the terminal lock signal to the mobile terminal 100 through a DM protocol.

The mobile terminal 100 receives the control initialization signal from the message server 500 and generates a communication session with the device management server 504. The mobile terminal 100 receives the reply contact setting signal from the device management server 504 through the communication session and posts the reply contact to the display unit. When the mobile terminal 100 receives the reply contact setting signal, the mobile terminal 100 may reproduce an alarm sound so that the learner can recognize the response.

In addition, the mobile terminal 100 may receive a terminal lock signal from the device management server 504 through the communication session to lock all functions except call origination and call reception for the reply contact.

The protocol used for the communication session between the mobile terminal 100 and the device management server 504 may be a device management (DM) protocol of the OMA standard.

In addition, the reply contact setting signal provided by the device management server 504 to the mobile terminal 100 may refer to the reply contact included in the reply contact setting signal by using the value of the node '<x> / Ext / ContactNum' as mentioned above. After replacing with, it may be to execute a '<x> / Ext / DisplayContactNum' node to post a reply contact stored in the '<x> / Ext / ContactNum' node.

In addition, the terminal lock signal provided by the device management server 504 to the mobile terminal 100 instructs the execution of at least one of the '<x> / Operations / FullyLock' node or the '<x> / Operations / PartiallyLock' node. It may be. The locking of the function can be achieved, for example, by ignoring all keystrokes except the call button.

When the reply contact setting signal and the terminal lock signal are based on the LAWMO standard as described above, the device management server 504 and the mobile terminal 100 may operate as follows.

(1) Package 0 (from message server 500 to mobile terminal 100)

A signal for initializing the DM client 182 of the mobile terminal 100. According to the present embodiment, the control initialization signal corresponds to this. Server authentication procedures can be performed.

(2) Package 1 (from mobile terminal 100 to device management server 504)

The initialization result of the DM client 182 and the device related information of the mobile terminal 100 are transmitted to the device management server 504. Client authentication procedures may be performed.

(3) Package 2 (from device management server 504 to mobile terminal 100)

If the client authentication is successful, it is a signal for the DM client 182 to execute the initial management operation and to execute some additional operation. According to the present embodiment, the LAWMO agent 180 replaces the value of the '<x> / Ext / ContactNum' node with the reply contact included in the reply contact setting signal to set the reply contact, and then sets the << x> / It may be a signal for controlling the DM client 182 to execute the Ext / DisplayContactNum 'node and to execute the' <x> / Ext / SetReceiverContactNum 'node.

In addition, the LAWMO agent 180 may be a signal for controlling the DM client 182 to execute at least one of the '<x> / Operations / FullyLock' node or the '<x> / Operations / PartiallyLock' node.

(4) Package 3 (from mobile terminal 100 to device management server 504)

The signal includes an execution result of the command included in the package 2.

(5) Package 4 (from device management server 504 to mobile terminal 100)

If the execution result of the command included in the package 2 is not successful, the package 2 is retransmitted. If the execution result is success, the communication session between the mobile terminal 100 and the device management server 504 is terminated. It is a signal. If the package 4 includes the communication session termination signal, the termination module 106 of the mobile terminal 100 terminates the DM client 182. In addition, the termination module 102 may reboot the mobile terminal 100 after setting a command corresponding to the reply contact setting signal and the terminal lock signal to be executed after booting.

Hereinafter, a method for locking a function of a mobile terminal according to another embodiment of the present invention will be described with reference to FIG. 6.

When the terminal loss report or theft report is received, the phone number and reply contact information of the lost terminal from the element owner of the terminal is stored in the server (S600).

The server transmits a reply contact setting signal including the reply contact and a terminal lock signal by using the telephone number of the lost terminal as the called party (S602). The reply contact setting signal and the terminal lock signal may be according to the LAWMO standard, in which case the server may further transmit a DM client initialization signal before the reply contact setting signal and the terminal lock signal are transmitted.

The reply number setting signal and the terminal lock signal are based on the LAWMO standard of OMA, the terminal lock signal is one of FullyLock and PartiallyLock Operation, and the reply number setting signal is a child of an Ext node in the LAW management object structure. Based on a first node for storing the reply contact added as a node, a second node for posting the reply contact, and a third node for designating the reply contact as a called number when a call is originated; It may be stored in one node, and the command to run the second node, the third node.

The mobile terminal receiving the reply contact setting signal and the terminal lock signal determines whether it is currently locked (S604). Whether it is locked can be known, for example, by checking the value of the 'State' node of the LAWMO managed object. In the current locked state, the lost terminal replaces the reply contact being posted with the reply contact included in the reply contact setting signal and posts it (S606).

If it is not currently locked, the lost terminal is set to lock the terminal after the reboot and display the contact information (S608). The locked state may be all functions except the function of sending to the replying contact or the function of receiving a call. The locked state can be achieved, for example, by ignoring the input of all buttons except the call button. That is, when the call button is pressed on the terminal that has been key-locked, the call is unconditionally sent only to the reply contact received from the server, and when the incoming call is received on the terminal, the call is made possible by pressing the call button. The reply contact is a reply contact included in the reply contact setting signal. The lost terminal posts the reply contact to the display unit. In particular, it is desirable to post on the standby screen.

After the setting is finished, the lost terminal reboots the terminal (S610).

After the rebooting, the lost terminal locks all except the function of sending the function of the terminal to the reply contact or the call forwarding function, and posts the reply contact on the standby screen (S612).

Hereinafter, a mobile terminal function locking method based on the LAWMO standard according to another embodiment of the present invention will be described with reference to FIG. 7.

First, when receiving a lost / stolen report of the terminal stores the phone number of the lost terminal and the telephone number of the reply terminal in the server (S700).

The server transmits a control initialization signal to the lost terminal (S702). The control initialization signal may be included in the SMS signal. In more detail, PID (Protocol ID) of the SMS header is a value indicating a control initialization signal, and ContentsData parameter of a wireless session protocol (WSP) may also be a signal indicating a control initialization signal. The control initialization signal may mean package 0 of the OMA DM (Device Management) protocol described in the OMA standard.

The lost terminal receives the control initialization signal to execute a DM client (S704). The lost terminal may not normally execute the DM client, but may execute the DM client by detecting the control initialization signal by monitoring the PID and ContentsData parameters of the received SMS signal.

The lost terminal transmits a result of DM client initialization (S706). The initialization result signal may mean Package 1 of the OMA DM protocol described in the OMA standard.

If the initialization result is successful, the server transmits a reply contact setup signal and a terminal lock signal based on the LAWMO standard to the lost terminal (S708). The reply contact setting signal may be, for example, a '<x> / Ext / ContactNum' leaf node that stores reply contact data in an extension node of a LAW managed object structure, and a command for displaying the reply contact data. '<X> / Ext / SetReceiverContactNum, a command that controls the corresponding' <x> / Ext / DisplayContactNum 'leaf node and the reply contact stored in the' <x> / Ext / ContactNum 'node as the called party number when calling You can use LAW managed objects with leaf nodes added. In more detail, after replacing the value of the node '<x> / Ext / ContactNum' with the reply contact included in the reply contact setting signal, the '<x> / Ext / DisplayContactNum' node is executed to execute the '<x>'. / Ext / ContactNum 'node may post a reply contact stored in the lost terminal, and execute the' <x> / Ext / SetReceiverContactNum 'node. The reply contact post signal or lock signal may mean Package 2 of the OMA DM protocol described in the OMA standard.

The lost terminal receives the reply contact setting signal and the terminal lock signal to post a reply contact, and locks some functions of the lost terminal (S710). When the DM client transmits the received reply contact setting signal and the terminal lock signal to the LAW agent, the LAW agent displays the reply contact and locks a part of the lost terminal through the HAL.

The lost terminal may play an alarm sound to attract the learner's attention when the reply contact is posted.

The lost terminal transmits a result of executing a reply contact post and lock function to the server (S712). The result signal of the function execution may mean package 3 of the OMA DM protocol described in the OMA standard.

If the result of the function execution is successful, the server transmits a signal to the lost terminal to terminate the communication session between the server and the lost terminal (S714). The session end signal may mean Package 4 of the OMA DM protocol described in the OMA standard.

When the lost terminal receives the session end signal from the server (S712), it terminates the DM client (S716). However, the lost terminal may allow the reply contact to be posted after booting, and may reboot after locking all functions except call origination and call reception to the reply contact.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

2 is a detailed structural diagram of a command execution unit according to an embodiment of the present invention.

3 is a diagram illustrating a LAW management object structure in a tree form according to an embodiment of the present invention.

4 is an example in which a lost guidance message including a reply contact is posted on a display unit according to an exemplary embodiment.

5 is a block diagram of a mobile terminal function lock system according to an embodiment of the present invention.

6 is a first flowchart illustrating a method for locking a mobile terminal function according to an embodiment of the present invention.

7 is a second flowchart illustrating a method for locking a mobile terminal function according to an embodiment of the present invention.

Claims (16)

When the reply contact setting signal including the reply contact is received, the display unit controls the display unit to post the lost guidance message including the reply contact, and when the terminal lock signal is received, the command to control the input unit to ignore some input signals. part; A display unit for posting a lost guidance message including the reply contact number under the control of the command execution unit; And And an input unit for ignoring an input signal except for answering an incoming call and originating a call to the reply contact number under the control of the command execution unit. The method of claim 1, Further comprising a sound output unit for reproducing the alarm sound under the control of the command execution unit, The command execution unit, When the reply contact setting signal is received, the mobile terminal for controlling the sound output unit to reproduce the alarm sound. The method of claim 1, The command execution unit, After booting, the lost guidance message is posted, the mobile terminal is set to ignore the input signal except for the response of the incoming call and the call origination to the return contact and then control the mobile terminal to reboot. The method of claim 1, The display unit, A mobile terminal for posting the lost guidance message on the standby screen. The method of claim 1, The command execution unit, And controlling the input unit to ignore all input signals except for a call button, and generating a call connection signal using the reply contact as a called party when the call button is pressed. The method of claim 1, The reply contact setting signal and the terminal lock signal, A mobile terminal based on the Lock And Wipe Mobile Object (LAWMO) standard. The method of claim 6, The command execution unit, When the reply contact setting signal is received, the data stored in the first node is replaced with the data of the reply contact using a first node added as a child node of an Ext node in a Lock And Wipe (LAW) managed object structure. Mobile terminal to replace. The method of claim 7, wherein The command execution unit, When the reply contact setting signal is received, Run two command nodes, a second node and a third node, which are further added as child nodes of the Ext node, respectively. The second node is a command node for controlling to post a lost guidance message including a reply contact to the display unit, and the third node is a command node for controlling to designate the reply contact as a called number when calling. . A device management server for transmitting a reply contact setting signal including a reply contact or a terminal lock signal for locking a part of the terminal to the mobile terminal; And Receives the reply contact setting signal from the device management server and posts a lost guidance message including the reply contact, and receives the terminal lock signal from the device management server, excluding a call origination or an incoming call response to the reply contact. A mobile terminal function locking system comprising a mobile terminal for locking a function. The method of claim 9, The reply contact setting signal and the terminal lock signal, Mobile terminal function locking system based on LAWMO (Lock And Wipe Mobile Object) standard. The method of claim 10, A message server for transmitting a control initialization signal included in a short message service (SMS) signal to the mobile terminal; The mobile terminal, And receiving the control initialization signal from the message server to form a communication session with the device management server through a device management (DM) protocol. The method of claim 11, And a central management server for receiving the identification number of the lost terminal and returning contact information, storing the received identification number, and requesting the message server to transmit the control initialization signal to the lost terminal. Receiving a reply contact setting signal and a terminal lock signal including the reply contact; And Receiving the reply contact setting signal and posting the reply contact to a display provided with the reply contact; receiving the terminal lock signal and locking all functions except for the function of receiving a call and replying an incoming call to the reply contact; Method for locking the function of the mobile terminal. The method of claim 13, After receiving the reply contact setting signal and the terminal lock signal, Determining whether the terminal is locked when receiving the reply contact setting signal and the terminal locking signal; And If the terminal is not locked, rebooting the terminal. The method of claim 13, The reply contact setting signal and the terminal lock signal, Based on the Open Mobile Alliance (OMA) Lock and Wipe Management Object (LAWMO) standard, the terminal lock signal is one of a FullyLock and PartiallyLock command (Operation), the reply contact setting signal is a lock and Wipe (LAW) Based on a first node for storing the reply contact added as a child node of an Ext node in the managed object structure, a second node for posting the reply contact, and a third node for designating the reply contact as a called number when calling; And storing the reply contact in the first node, executing the second node, and executing the third node. Transmitting a control initialization signal to a lost terminal to cause a DM client to transmit and receive a signal according to an Open Mobile Alliance (OMA) Device Management (DM) protocol; Receiving a DM client execution result from the lost terminal; And If the DM client execution result is successful, transmitting a reply contact setting signal including a reply contact and a terminal lock signal to the lost terminal, The reply contact setting signal and the terminal lock signal are based on a lock and wipe management object (LAWMO) standard of OMA, and the terminal lock signal is one of FullyLock and PartiallyLock commands (Operation), and the reply contact setting signal is Designating a first node for storing the reply contact added as a child node of an Ext node of a Lock And Wipe (LAW) managed object structure, a second node for posting the reply contact, and the reply contact as a forwarding number upon call origination And storing the reply contact in the first node, executing the second node, and executing the third node based on the third node.

Images