KR20060081859A - Method for protecting data in portable terminal - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a method of protecting stored data in a portable terminal.

2. The technical problem to be solved by the invention

The present invention, by validating the data received from the external device (computer) and processing in accordance with the corresponding command, the storage in the portable terminal to prevent data loss stored in the wireless communication terminal due to user carelessness Its purpose is to provide data protection methods.

3. Summary of Solution to Invention

According to an aspect of the present invention, there is provided a method of protecting stored data in a portable terminal, comprising: a receiving step of receiving data and a data processing command (eg, a Diag packet) from an external device; A determination step of determining the validity of the received data; A notification step of notifying the external device that the data is invalid if the received data is not valid as a result of the determination in the determination step; A data processing step of processing a corresponding command of the received data according to the determination result of the determining step as the received data is valid; And transmitting the processing result to the external device.

4. Important uses of the invention

The present invention is used in a wireless communication terminal.

Data validation, stored data protection method, portable terminal

Description

Method for protecting data in portable terminal             

1 is a view showing an embodiment of a connection between an external device and a wireless communication terminal to which the present invention is applied;

2 is a diagram illustrating an embodiment of a wireless communication terminal to which the present invention is applied;

3 is a flowchart illustrating a method of protecting stored data in a wireless communication terminal according to the present invention.

* Explanation of symbols for the main parts of the drawings

21: USB Hardware 22: USB Driver

23: DIAG packet processing unit 24: data protection unit

25: File System 26: Flash Memory Driver

27: flash memory hardware

The present invention relates to a method of protecting stored data in a portable terminal, and more particularly, by validating data received from an external device (computer) and processing the data according to a corresponding command, thereby storing the wireless data in a wireless communication terminal due to user's carelessness. The present invention relates to a method of protecting stored data in a portable terminal for preventing data loss.

In the present invention, a portable terminal is a mobile multimedia terminal as well as a wireless communication terminal such as a mobile communication terminal, a personal digital communication terminal (PCS), a personal digital terminal (PDA), a smartphone, a next generation mobile communication terminal (IMT-2000), a wireless LAN terminal, and the like. A portable terminal such as a player (PMP), a digital camera, a game machine, or the like.

In the following embodiment, a wireless communication terminal will be described as an example of a portable terminal.

Meanwhile, the following embodiment will be described using an example of a universal serial bus (USB) for interfacing with an external device.

The Universal Serial Bus (“USB”) is Intel, Microsoft, Compaq, and IBM, the leaders in telecommunications that recognize the need for interconnections to grow the computer telephony integration (CTI) industry. A bus standard for personal computer (P) peripherals for true plug and play (PnP), developed by NEC, DEC, and Nortel, etc., provided that the personal computer has only one USB connector. Up to 127 lights can be connected in star or radial form. In other words, USB allows you to connect all peripheral devices to the same USB connector without setting up software or hardware when connecting peripheral devices to a PC. This greatly reduces the number of ports and makes installation easy and portable. The advantage is that the PC can be miniaturized.

The biggest advantage of USB is its ability to conveniently handle the interface between people and computers or peripherals. Provision of such a function is a function supported through a communication function. Previously, a large number of communication ports were built into the computer to support this feature, but USB has the advantage that up to 127 peripherals can be easily supported.

Various external devices exist in a computer. For example, in addition to storage devices such as hard disk drives, CD-ROM drives, and ZIP drives, modems, keyboards, mice, and the like are applicable. For reference, printers, scanners, and speakers are peripheral devices. These external devices are devices that need to be connected inside a computer using connectors or to a predetermined port, adding components that provide an external interface such as SCSI (SSC), or existing serial / parallel ports. Should be used. Therefore, there is a limit to the number of devices that can be connected, and simply provides a communication function, thus requiring a separate power supply device for driving the device.

This reduces the portability and convenience of external devices. In contrast, the USB port can supply 100mA per device by default and up to 500mA from the hub. Therefore, even if the external device does not have a separate power supply, it can be used immediately by connecting a USB cable.

According to this principle, when a wireless communication terminal is connected to an external computer using a USB cable, communication can be performed with each other.

However, inadvertent loss of data is often caused by carelessness during the use of various programs that can exchange data with each other.

For example, in the case of a program called "PC-Sync" defined for each wireless communication terminal, data of the wireless communication terminal may be transferred to a computer and stored and stored in the wireless communication terminal whenever necessary.

However, data is often lost due to incorrect use of the program.

1 is a diagram illustrating an embodiment of a connection between an external device and a wireless communication terminal to which the present invention is applied.

As shown in FIG. 1, the wireless communication terminal 11 is connected to an external device (computer) 13 through a cable 12.

The wireless communication terminal 11 and the external computer 13 are usually connected by a USB cable or a serial cable to communicate by a predetermined protocol between the two.

In general, data exchange protocols exchange data directly, and in the file unit where the data is written. This exchange can only be written and read by the protocol without any special procedure.                         

Since this protocol only defines data related to transmission and reception of data, no processing is performed according to the contents of the data in the middle, resulting in loss of unwanted data due to user error.

The external computer transmits a packet in a protocol previously agreed with the wireless communication terminal. The wireless communication terminal checks whether the packet received from the external computer is correctly transmitted, divides each command, and performs an operation according to each command.

At this time, operations related to flash memory storage include writing and reading of data. Reading is reading the desired data from the flash memory and transferring it to a computer, and writing is writing the data received from the computer to the flash memory. At this time, the wireless communication terminal determines whether the data has been correctly written to the flash memory without any abnormality, and if it is correctly written, sends an OK signal back to the computer to inform that the writing operation has been performed without any abnormality.

When the computer transmits an arbitrary command to the terminal while the wireless communication terminal and the computer are connected (in communication), the terminal receives the packet and processes the packet according to the predetermined command.

However, when the computer sends a command to store an empty telephone number, the wireless communication terminal does not recognize the wrong state of the data and simply processes it according to the command. That is, it checks only that the packet has been transmitted without abnormality and stores an empty telephone number.

Currently, the functions of wireless communication terminals are very wide ranging from storing phone numbers to exchanging business cards. The contents of the wireless communication terminals have become more important than those of electronic notebooks. However, as in the conventional wireless communication terminal, there is a problem that by storing the empty data without recognizing the wrong state of the data, the previously stored contents can be erased by a minor mistake.

The present invention has been proposed to solve the above problems, and by validating the data received from the external device (computer) and processing according to the corresponding command, it is possible to prevent data loss stored in the wireless communication terminal due to user carelessness It is an object of the present invention to provide a method for protecting stored data in a portable terminal.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. In addition, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to an aspect of the present invention, there is provided a method of protecting stored data in a portable terminal, comprising: a receiving step of receiving data and a data processing command (eg, a Diag packet) from an external device; A determination step of determining the validity of the received data; A notification step of notifying the external device that the data is invalid if the received data is not valid as a result of the determination in the determination step; A data processing step of processing a corresponding command of the received data according to the determination result of the determining step as the received data is valid; And transmitting the processing result to the external device.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, some terms used in the present invention will be described.

Task is a software division of all the work done inside the terminal. All tasks defined as tasks are configured to work independently, as each program runs independently on the computer. For example, a task includes a UI task, a Diag task, and the like.

The infant task is responsible for the screen configuration, the phone book, SMS, photos, etc. that all users see.

On the other hand, the DAG task is responsible for the work of Qualcomm's own data packet exchange method to be controlled by the computer. Through this packet exchange, the status information of the terminal can be obtained from the computer, and the data existing in the terminal can be written and erased.

In this case, tasks may be exchanged with each other. In this case, the defined signals may be exchanged to exchange information with each other.

2 is a configuration diagram of an embodiment of a wireless communication terminal to which the present invention is applied.

As shown in FIG. 2, the wireless communication terminal to which the present invention is applied includes a USB hardware 21 for physically connecting through a cable 12 to transmit and receive data with an external computer 13, and the USB. USB driver 22 for processing the transmission and reception data between the hardware 21 and the diamond packet processing unit 23, DIAG packet processing unit for processing the diamond packet received through the USB driver 22 ( 23, a data protection unit 24 for verifying the data processed by the diamond packet processing unit 23, a file system 25 for storing the verified data, the file system 25 and the flash memory Flash memory driver 26 for processing data transmitted and received between the hardware 27, and flash memory for physically storing data received through the flash memory driver 26 Mori hardware 27 is included.

3 is a flowchart illustrating a method of protecting stored data in a wireless communication terminal according to the present invention.

First, when the diamond task 31 receives a diamond packet from the computer 13 (301), the infant transmits a data validation request signal (UI_CHECK_DATA_PROTECTION_SIG) to the task 32 (302).                     

In operation 303, the infant task 32 determines whether data is valid according to the data validation request signal.

As a result of the determination 303, as valid data, the validity OK signal DIAG_CHECK_DATA_OK_SIG is transmitted to the diamond task 31 (304).

Then, as the diag task 31 receives the valid OK signal DIAG_CHECK_DATA_OK_SIG, the diag task 31 processes an instruction of the corresponding diag packet (305), and transmits a response packet to the computer 13 (306).

In response to the determination result 303, the data is not valid data, and a valid Not OK signal DIAG_CHECK_DATA_NOTOK_SIG is transmitted to the diamond task 31 (307).

Thereafter, the plug task 31 transmits a response packet to the computer 13 in response to receiving the valid Not OK signal DIAG_CHECK_DATA_NOTOK_SIG.

Hereinafter, the data protection method according to the present invention will be described in more detail.

First, the diag task 31 has a diag command in the first part (header) of each packet that can be recognized by the diag command (diagram task), and the packet performs some work. If it is necessary to determine whether it is necessary to check the validation of data, the infant sends a data validation request signal (UI_CHECK_DATA_PROTECTION_SIG) to task 32 to check the data.

Afterwards, the infant 32 receiving the data validation request signal UI_CHECK_DATA_PROTECTION_SIG analyzes the data delivered by the diamond task 31.

In this case, the infant task 32 determines whether the received data is a phone book, a short message (SMS), a video, and the like, and if the data is empty or not, the time when the data is generated is data of the wireless communication terminal. If it is determined that it is older than the above, it is determined that it may be stored in the wireless communication terminal, and the process proceeds to "304".

Thereafter, when the infant checks the validity of the data, the child 32 transmits a validity OK signal DIAG_CHECK_DATA_OK_SIG to the diamond task 31. The diamond task 31 then processes the packet.

After that, the diag command 31 processes the diag command without error and transmits the corresponding command processing completion packet to the computer 13.

On the other hand, if the infant checks that the task 32 is incorrect data, the toddler task 31 transmits a valid NOT OK signal DIAG_CHECK_DATA_NOTOK_SIG. Then, the diamond task 31 recognizes that the data is wrong, and then transmits a response packet to the computer 13 indicating that the data is wrong.

In the present invention, the wireless communication terminal has a process of confirming the validity of the data contained in the packet received from the computer to check the validity of the packet data and then process it. Therefore, in terms of processing time of the wireless communication terminal, a little damage is required, but the processing time does not take so long because only a validity check corresponding to a small unit of packet is processed.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, by validating the data received from the external device (computer) by processing in accordance with the corresponding command, there is an effect that can prevent the loss of data stored in the wireless communication terminal due to user carelessness.

Claims (2)

In the storage data protection method in a portable terminal, A receiving step of receiving data and a data processing command (eg, a diamond packet) from an external device; A determination step of determining the validity of the received data; A notification step of notifying the external device that the data is invalid if the received data is not valid as a result of the determination in the determination step; A data processing step of processing a corresponding command of the received data according to the determination result of the determining step as the received data is valid; And Transmitting the processing result to the external device Storage data protection method in a portable terminal comprising a. The method of claim 1, The determining step, And determining whether the received data is empty data or whether the received data is older than the data previously stored in the portable terminal.

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