KR20020037416A - Method of Phone Lock for Terminal - Google Patents

Abstract

PURPOSE: A method for locking a telephone of a terminal is provided to prevent other person from watching information of the owner of a terminal by transmitting a pre-stored coded string using a short character service, thereby making the terminal be locked automatically when the terminal having important data of the owner is lost. CONSTITUTION: A user coded string is stored in a mobile terminal(50). When the terminal is lost, a short message is transmitted to the first base station through the coded string using other terminal(51). The lost terminal receives the short character service through a switching center(51). The lost terminal analyzes the message received from the second base station(52) and compares the message with a pre-stored coded string(53). If the message is identified with the pre-stored coded string, a locking function is executed in the lost terminal and the screen of the lost terminal is changed into a locking status(54,55). A telephone locking status is displayed on the screen of the status-changed terminal(57).

Description

Method of Phone Lock for Terminal}

The present invention relates to an automatic lock of a mobile communication terminal, and in particular, a short text service (SMS, Short Message) to protect personal data efficiently and safely against a problem that may occur when a terminal is lost in a state where important personal data is recorded. The present invention relates to a method for automatically performing a lock function by transmitting an encrypted string using a service.

Conventional terminal locking method uses the phone lock function using a code related to the user interface (UI) of the terminal, but preserves the user's information when the terminal is lost without the user setting the phone lock function There is no function for doing so or keeping it secret.

In addition, the prior art is to set a function for locking the phone in the user interface to specify a user password, and when using the terminal after setting the user password to unlock (Lock) to use.

However, if the terminal is lost while the terminal is not locked, the method for this is not used now.

1 is a flowchart illustrating a terminal lock of a conventional mobile communication terminal.

First, the user encryption string for the phone lock function can be set and edited by the user using the user interface.

The user selects a user password code input menu using a keypad (not shown) of the terminal (step 10).

Thereafter, when an encryption code for performing the phone lock function is input, the phone code is stored in the terminal memory and the phone lock function is selected by the user (steps 11, 12, 13).

If the user does not enter an encryption code, the user uses the terminal without setting the phone lock (step 14).

However, in the related art, a user password must be pressed each time the terminal is used, and when the terminal is lost without executing the lock function again after use, there is a fear that the personal information of the user is unprotected.

In addition, the current terminal is moving away from the existing simple telephone function to the concept of personal digital assistants (PDAs), so that various functions (schedule, memo, name book, etc.) are provided for the user's convenience. When a terminal is lost, a lot of user's personal information may be exposed as it is.

Therefore, the present invention was created to solve the above problems, and when a terminal containing important data of a user is lost, a lost terminal is automatically locked by transmitting a predetermined encryption string using a short text service. An object of the present invention is to provide a phone lock method of a terminal for preventing other users from leaking stored information.

In addition, another object of the present invention is to provide a message indicating that the terminal is locked when the phone lock function is performed.

1 is a flow chart of a terminal lock of a conventional mobile communication terminal

2 is a block diagram of a method for locking a phone in a mobile communication terminal using a short text service according to an embodiment of the present invention.

3 illustrates an embodiment of storing a user encrypted string of the present invention.

4 is a communication procedure between a terminal and an exchange station for implementing a phone lock according to the present invention.

5 is a flowchart illustrating a procedure of performing a phone lock function according to the present invention.

The present invention provides a method of locking a phone, the method comprising: storing a user encryption string; Comparing the received encrypted string with a received message for equality; Executing a phone lock when the encryption string and the received message are the same; If the encrypted string and the received message are not the same, processing the general text message; And displaying a message indicating that the phone lock function is performed when the encryption string and the received message are the same.

In addition, the present invention can be carried out using a short text service between the terminal and the base station and Figure 2 is a block diagram of a system for locking a mobile communication terminal using a short text service according to an embodiment of the present invention.

As shown therein, any terminal 1 for transmitting the information necessary for performing the phone lock function of the present invention, the first base station 2 for transmitting and receiving with the terminal, the first base station and the lost terminal ( 5) and an exchange station 3 which connects the second base station 4 to transmit and receive.

The operation between the block diagrams of FIG. 2 will be described in detail, and a short message is sent to the first base station 2 using an arbitrary terminal 1 in an encrypted string.

Then, the encryption string is transmitted from the second base station 4 to the lost terminal 5 via the switching center 3.

In the lost terminal 5, when the received message is matched with the encryption string already assigned to the terminal, the terminal is locked and the phone is locked on the screen.

3 shows an example of storing a user encryption string.

Here, the header indicates a protocol that can be recognized by the base station when a short text message is sent, and # / # is arbitrarily designated to indicate that the encryption mode is used, and P / H / O / N / E / A / U / T / O / L / O / C / K can be customized.

4 is a communication procedure between a terminal and an exchange station for implementing a phone lock using the short text service of the present invention. First, there must be a service request according to a user's request between the transmitting terminal 1 and the switching center 3.

That is, the user sends a short text message to the switching center 3 in an encrypted string using the terminal keypad (step 40).

The switching center 3 transmits the short text message requested by the user to the lost terminal 5 in an encrypted string state (step 41).

The lost terminal 5 receiving the short text message transmits an acknowledgment (ACK) message to the switching center 3 (step 42).

Therefore, the terminal 5 lost after completing the above steps 40, 41, 42 compares the received string with the string defined therein and switches to the locked state if it matches. If it does not match, it is treated as a normal text message.

When comparing the encryption string, first identify the header part, and then compare P / H / O / N / E / A / U / T / O / L / O / C / K in order.

5 is a flowchart illustrating a procedure of performing a locking function by a short text service in a mobile communication terminal according to the present invention, which will be described in detail with reference to FIGS. 2 to 4.

First, the user encryption string is stored in the terminal (step 50).

When the terminal is lost, a short message is sent to the first base station 2 using an arbitrary terminal 1 as an encrypted string as shown in FIG. Then, the lost terminal 5 via the switching center 3 receives the short text service from the base station 4 (step 51).

The lost mobile communication terminal 5 analyzes the message received from the second base station 4 (step 52) and compares it with the previously stored encryption string (step 53).

If the message received in the above process is the same, the lock screen of the lost terminal is executed, and then the screen of the terminal is switched to the locked state (steps 54 and 55). If not, the message is processed as a general text message (steps 54 and 56).

The terminal 5 whose state has been switched shows a phone lock state on the screen (step 57).

As described above, according to the present invention, in the method for locking a phone, the user locks the user encryption string in the terminal and compares the stored encryption string with the received message to execute the phone lock when the encryption string and the received message are the same. If the encryption string and the received message is not the same, the method relates to a phone lock method characterized in that it is processed as a general text message and displays a message indicating that it is performed when the phone lock function is performed according to the above process.

Therefore, it is possible to prevent a situation in which the user's information is leaked when the terminal is lost by the method to be applied in the present invention.

As described above, the method for activating the phone lock function of the mobile communication terminal using the short text service according to the present invention can effectively prevent the problem of personal information leakage caused when the terminal is lost.

Therefore, the user does not have to worry about the leakage of information that may occur when the terminal is lost.

The present invention can be applied to all kinds of mobile communication terminals currently used.

Claims (2)

In the phone lock method of the terminal, Storing a user encrypted string; Receiving and analyzing an encrypted string message from a base station; And comparing the stored encryption string with a received message to perform a phone lock function if the same is the same. The method of claim 1, further comprising displaying a message indicating that a phone lock function is performed when the encryption string and the received message are the same.