KR100886235B1 - Method and system for synchronizing data of personal mobile terminal - Google Patents

Abstract

The present invention provides a method for synchronizing data between a personal digital assistant and a personal computer, by which encrypted data can be transmitted to an authenticated personal digital assistant so that predetermined digital copyright protection can be performed on the personal digital assistant side. A method and system for performing data synchronization are provided.

According to an aspect of the present invention, there is provided a method for synchronizing data in a personal portable terminal, wherein the authentication data recorded in the first memory area of the personal portable terminal is accessible from the personal computer. Loading into a memory area; Transmitting a data synchronization request between a personal computer and the personal portable terminal; Establishing a session for data transmission with a predetermined application installed on the personal computer; Transmitting the authentication data loaded into the second memory area to the application to determine validity; And if it is determined that the authentication data is valid, performing data synchronization between the personal computer and the personal portable terminal according to the control of the application.

Personal digital assistant, encryption, decryption, authentication data, DRM

Description

A method of synchronizing data of a personal mobile device and its system {A METHOD OF SYNCHRONIZING DATA OF PERSONAL PORTABLE DEVICE AND A SYSTEM THEREOF}

1 is a diagram showing the configuration of a system for implementing a digital content protection method according to the prior art.

2 is a block diagram showing the configuration of an application installed in a personal portable terminal and a personal computer according to an embodiment of the present invention.

3A is a flowchart illustrating an example of a method of loading authentication data of a personal portable terminal into a predetermined memory area when power is applied to the personal portable terminal according to one embodiment of the present invention.

3B is a flowchart illustrating an example of a data synchronization method of a personal portable terminal according to an embodiment of the present invention.

4 is a flowchart illustrating an example of a data synchronization method of a personal portable terminal according to an embodiment of the present invention.

5A and 5B are diagrams illustrating an example of an authentication data structure recorded in the first and second memory areas according to an embodiment of the present invention.

6 is an internal block diagram of a general-purpose computer system that may be employed in the method and system for performing data synchronization of a personal portable terminal according to the present invention.

The present invention relates to a method for performing data synchronization between a personal digital assistant and a personal computer, and more particularly, to transmit encrypted data to an authorized personal digital assistant in synchronizing data between the personal digital assistant and the personal computer. The present invention relates to a method and a system for performing data synchronization of a personal portable terminal so that predetermined digital copyright protection can be performed on the side.

As a method for managing data recorded on a personal portable terminal such as an MP3 player, a PDA, a handheld PC, or a mobile communication terminal, a method of synchronizing data and files between a personal computer (PC) and a personal portable terminal is generally used. there was. This synchronization method is a connection method of a personal computer to a personal portable terminal using a wired method such as a serial port or a universal serial bus (USB) port, commonly called cradle synchronization, or an infrared port, Bluetooth, There is a connection method of a personal computer to a personal portable terminal using a wireless method such as Wi-Fi. In addition, as a method of transmitting data to a personal portable terminal which is widely activated at present, the personal portable terminal connected through a universal serial bus (USB) or the like from a personal computer is recognized as a mass storage device as a file. Alternatively, a UMS (USB Mass Storage) method for freely transmitting data is used. As will be appreciated by those skilled in the art, the file or data transfer through this UMS method merely performs the transfer of the file or data, but is completely supported by algorithms that can perform security or digital copyright protection for the transmitted file or data. It is not happening.

Various methods have been devised to protect the rights of original authors for such digital contents. In other words, as the digital content itself is treated as a work and the recognition of protecting the rights of copyright holders is spreading, the perception of a large number of users who think that digital content is free is changing. The following methods are suggested as a copyright protection method for such digital content.

One of the methods proposed for copyright protection of digital content is watermarking technology, which conceals copyright-related information in the digital content itself. This watermarking technology is largely based on 1) copyright protection, that is, for the protection of intellectual property rights, a content owner inserts a watermark indicating copyright information in his or her content, and proves ownership in court when someone infringes on his or her copyright. And 2) content owners insert a different watermark, such as ID or serial number, for each user who receives the content to track the source of finger printing, i.e., piracy of digital content. Not only can it be used to find users who have violated license agreements and illegally distribute them, but 3) information stored in watermarks can also be used to directly control digital recording devices for the purpose of copy protection.                         

In addition, another method for protecting copyright of digital content is a digital rights management (DRM) system. Such a digital rights management system refers to a system implementation technology for securely delivering various contents in a network from a content provider (CP) to a client and preventing the customer from illegally distributing the content. The most important technology in the DRM system is encryption technology. The digital content is encrypted / decrypted by using the customer's password or the unique number of the customer's computer as the encryption / decryption key value data. Even if distributed to a third party, the digital content cannot be used unless it has the key value data. The key value data may be 1) a method of modifying a unique identifier of a customer's computer, or 2) a method of using a customer's public key infrastructure (PKI) key or a secret private key.

1 is a diagram showing the configuration of a system for implementing a digital content protection method according to the prior art.

1 is an example of a digital content providing system using DRM, the DRM center 120 is connected to the content providing server 110 for providing digital content and the payment system (Payment Gateway) 130 to protect the digital rights The content is encrypted and provided to the user 140. When the user 140 requests viewing of digital content such as an image, audio, video, etc. through a network such as the Internet and pays a predetermined fee therefor, the payment system 130 notifies the payment approval, and the DRM center ( In operation 120, the digital content is encrypted and provided to the user 140 according to a predetermined algorithm. Recently, a tempering technique for restoring the source code of the corresponding digital content by using an executable file encrypted and transmitted to the user has emerged. Therefore, the DRM center 130 requires a technique for effectively preventing such hacking techniques such as tampering. It is becoming.

As described above, various technologies have been developed for copyright protection of various digital contents provided on the Internet. However, this is a digital copyright protection method performed by the content provider that provides digital content, and because of its characteristics, a single technology among various content providers Not only is it difficult to integrate and operate as a standard, there is a problem that the rights of the original copyright holder of digital contents may be unjustly infringed by the incapacitation of digital copyright protection through various methods such as the above-described tampering technique.

In addition, in the conventional copyright protection method of digital content, since a lot of pre-processing is performed at the server side, as the amount or type of digital content increases, a system implementation cost and a system load for processing the digital content increase. There is this.

In order to solve this problem of the prior art, a new technique for a digital copyright protection method that can be performed on the personal portable terminal side of a user who uses such digital content for copyright protection of digital content has been desired.

The method and system for performing data synchronization of a personal portable terminal according to the present invention are to solve the above-mentioned problems of the prior art, and to provide a copyright protection method of digital content implemented on the user's personal portable terminal. do.

In addition, the method and system for performing data synchronization of a personal portable terminal according to the present invention records predetermined authentication data on the personal portable terminal so that the digital content can be used only in the authenticated personal portable terminal. It is an object of the present invention to prevent unauthorized copying or distribution of digital content by disabling the digital content.

In addition, the method and system for performing data synchronization of a personal portable terminal according to the present invention is a digital mass transfer (UMS) method of increasing the utilization of data between the personal portable terminal and the personal computer of the UMS (USB Mass Storage) method, the transmission of digital content to be transmitted Its purpose is to help protect copyrights.

In addition, the method and system for performing data synchronization of a personal portable terminal according to the present invention provides a smooth data transfer between both devices as well as digital copyright protection of the transmitted data without a separate driver for data synchronization between the personal portable terminal and the personal computer. Its purpose is to make it possible.

In order to achieve the above object, a method for performing data synchronization in a personal portable terminal according to an embodiment of the present invention, accessing the authentication data recorded in the first memory area of the personal portable terminal from the personal computer Loading into a second memory area of the personal portable terminal where possible; Transmitting a data synchronization request between a personal computer and the personal portable terminal; Establishing a session for data transmission with a predetermined application installed on the personal computer; Transmitting the authentication data loaded into the second memory area to the application to determine validity; And if it is determined that the authentication data is valid, performing data synchronization between the personal computer and the personal portable terminal according to the control of the application.

In addition, a method for performing data synchronization with a personal portable terminal according to another aspect of the present invention, the method comprising: receiving a data synchronization request from the personal portable terminal; Establishing a session for data synchronization with the personal mobile terminal; Receiving authentication data from the personal portable terminal, wherein the personal portable terminal loads the authentication data recorded in the first memory region of the personal portable terminal into a second memory region of the personal portable terminal accessible from the personal computer; -; Determining validity of the transmitted authentication data; And if it is determined that the authentication data is valid, performing data synchronization between the personal computer and the personal portable terminal.

The personal portable terminal widely used herein includes a predetermined memory means such as a PDA (Personal Digital Assistant), an MP3 player, a handheld PC, an electronic dictionary, a mobile phone, and the like by mounting a predetermined microprocessor. It is a concept that collectively refers to the terminal with the computing power. In addition, data synchronization may include maintaining data consistency through two-way communication between a personal portable terminal and a personal computer, as well as transmitting predetermined data or files stored in the personal computer to the personal portable terminal. Concept.

Hereinafter, a method and system for performing data synchronization of a personal portable terminal according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing the configuration of an application installed in a personal portable terminal and a personal computer according to an embodiment of the present invention.

The personal portable terminal 200 according to the present invention records a predetermined firmware 210 and authentication data for authentication of the personal portable terminal 200 and is configured to be unrecognizable by the personal computer. Area 220, digital content such as video or audio data transmitted from the personal computer, and a second memory area 230 for holding the authentication data loaded in the first memory area 220, and data to be transmitted. It may include an interface module 240 for performing communication with a predetermined application 250 installed in the personal computer storing the.

Predetermined authentication data for authenticating the personal portable terminal 200 is recorded in the first memory area 220. The authentication data includes predetermined version information, a terminal identifier (ID) of the personal portable terminal 200, a predetermined status code, key value data for encrypting or decrypting data transmitted and received between personal computers, And predetermined checksum bits for checking the integrity of the terminal identifier or the key value data. Specific examples of such authentication data will be described in detail with reference to FIGS. 5A and 5B. In addition, in the initial release state of the personal mobile terminal 200, the first memory area 220 may be in a NULL state in which no data is recorded. In the case of the personal portable terminal 200 in the initial release state, the authentication data management module 212 of the firmware 210 generates authentication data request information having a predetermined status code to authenticate the application 250 installed in the personal computer. The electronic device may communicate with the data management module 252, and receive predetermined authentication data from the application 250 and record the authentication data in the first memory area 220.

In the second memory area 230, digital content such as audio or video data transmitted from a personal computer is recorded. In addition, when the personal portable terminal 200 synchronizes with the personal computer, authentication data stored in the first memory area 220 is loaded in the second memory area 230.

The first memory area 220 and the second memory area 230 may be implemented in one memory means, and in this case, the first memory area 220 may be set to be inaccessible to the personal computer. That is, by setting the first memory area 220 as a bad block, even if the personal portable terminal 200 is recognized as a universal serial bus mass storage device (USB Mass Storage) by the personal computer, the personal computer may remove the bad block. It is also possible to implement such that the first memory area 220 cannot be recognized. In addition, according to another embodiment of the present invention, the first memory region 220 may be implemented as a memory means separate from the second memory region 230. Even in this case, the first memory area 220 may be implemented so that the personal computer cannot recognize it. This is to prevent the authentication data for authentication of the personal portable terminal 200 from being deleted due to the immaturity of the user's operation.

The firmware 210 is a kind of operating system that is recorded in a memory means such as a ROM of the personal portable terminal 200 and performs operation control of the personal portable terminal 200. The firmware 210 is a kind of software designed to be updated when necessary. . The ROM may be an EEPROM (Electrically Erasable and Programmable Read Only Memory) capable of writing updated firmware and erasing previous firmware.

The firmware 210 may include one or more software modules, which may include an authentication data input / output module 211, an authentication data management module 212, a decoder 213, a decryption module 214, and a control. It may be composed of a module 215.

The authentication data input / output module 211 is a module for performing input / output of authentication data recorded in the first memory area 220. Read the authentication data recorded in the first memory area 220 and transmit it to the authentication data management module 212, and write the authentication data transmitted from the authentication data management module 212 to the first memory area 220. In charge of.

The authentication data management module 212 is a module for analyzing the authentication data transmitted from the authentication data input / output module 211 and loading the authentication data into the second memory area 230. When the authentication data transmitted from the authentication data input / output module 211 does not include the terminal identifier or the key value data of the personal portable terminal 200, the authentication data request information is generated and loaded into the second memory area 230. do. In addition, the authentication data management module 212 may be implemented to verify the integrity of the terminal identifier or key value data by using the checksum bits recorded in the first memory area 220. As will be appreciated by those skilled in the art, it is possible to determine whether or not the corresponding data is defective through a predetermined checksum bit, and when the authentication data management module 212 determines that the terminal identifier or key value data is defective, Instead of the defective terminal identifier or key value data, the authentication data request information may be generated and loaded into the second memory area 230. An example of such authentication data and authentication data request information is described in detail with reference to FIGS. 5A and 5B.

The decoder 213 restores the compressed or encoded digital content and outputs it to the user of the personal mobile terminal. For example, digital content encoded in a specific format such as mp3 (MPEG Layer 3), wma (window media audio file), wav (wave file), avi (audio video interleaved), or asf (MS advanced streaming format file) It can be decoded and played back in the personal mobile terminal 200.

The decryption module 214 decrypts the digital content encrypted using the key value data of the authentication data using the key value data recorded in the personal portable terminal 200. That is, if the key value data included in the authentication data recorded in the personal portable terminal 200 is not valid, the encryption module 253 of the application 250 may not decrypt the digital content encrypted with the key value data. do.

The control module 215 is a module for controlling the operation of the personal portable terminal 200 and the operation of the software modules. The control module 215 may include a plurality of software modules for controlling the operation of the personal portable terminal 200 of the conventional firmware.

The application 250 is an entity implemented as a kind of software installed in a personal computer for performing data synchronization with the personal portable terminal 200. The application 200 performs a function of performing data transmission / reception with the personal portable terminal 200 and encrypting data transmitted and received, and managing authentication data for performing authentication of the personal portable terminal 200.

The application 200 may include a USB mass storage device automatic detection module 251, an authentication data management module 252, and an encryption module 253.

The USB mass storage device automatic detection module 251 detects the connection when the personal portable terminal 200 is connected through the universal serial bus, and recognizes the personal portable terminal 200 as the mass storage device. As will be appreciated by those skilled in the art, a universal serial bus (USB) is implemented to connect peripherals of a personal computer and is comprised of a USB hub, a USB node, and a USB host. As described above, according to an exemplary embodiment of the present invention, the USB mass storage device automatic detection module 251 may recognize the mass storage device as the second memory area 230.

The authentication data management module 252 receives the authentication data loaded in the second memory area 230 of the personal portable terminal 200 and performs a function of determining the validity of the authentication data. In addition, when the authentication data loaded into the second memory area 230 of the personal mobile terminal 200 does not include the terminal identifier or the key value data, the authentication data management module 212 generates the second memory area ( The new authentication data may be transmitted to the personal portable terminal 200 in response to the authentication data request information loaded in 230.

The encryption module 253 encrypts digital content such as audio or video data transmitted to the personal portable terminal 200 using key value data included in the authentication data. The digital content encrypted by the encryption module 253 is transmitted to the personal portable terminal 200, and the encrypted digital content is decrypted by the decryption module 214 of the personal portable terminal 200.

3 is a flowchart illustrating an example of a data synchronization method of a personal portable terminal according to an embodiment of the present invention.

3A is a flowchart illustrating an example of a method of loading authentication data of a personal portable terminal into a predetermined memory area when power is applied to the personal portable terminal according to one embodiment of the present invention.

When the power of the personal portable terminal is turned on, the authentication data input / output module of the personal portable terminal searches for authentication data recorded in the first memory area and reads the authentication data (step 301). The read authentication data is transmitted to the authentication data management module, and the authentication data management module determines whether terminal identifier or key value data exists in the read authentication data (step 302). In order to determine whether there is a terminal identifier or key value data in the authentication data read in step 302, the status code included in the authentication data may be examined. That is, the status code included in the authentication data may be used to indicate the current state of the authentication data. For example, when the status code is 0x00, the initial state of the memory of the personal mobile terminal is used, and when the status code is 0x01, the terminal identifier is used. Alternatively, the state in which the key value data is normally set may be implemented, and when the status code is 0x02, it may be implemented to indicate a state in which a new terminal identifier or key value data should be requested to the application. Similarly, the status code included in the authentication data loaded into the second memory area may be read to perform a routine corresponding to the corresponding code. A detailed description of the status code will be given later with reference to FIG. 5A.

If it is determined in step 302 that the authentication data is authentication data including terminal identifier or key value data, the integrity of the terminal identifier or key value data is reviewed using the checksum bit stored in the first memory area (step 303). . It is determined whether there is a defect in the terminal identifier or key value data included in the authentication data (step 304). If it is determined that there is no defect in the authentication data, the authentication data is loaded into the second memory area (step 305). According to another embodiment of the present invention, the authentication data integrity check performed in the above-described step 303 and step 304 may be omitted. By performing the above steps 301 to 305, the authentication data recorded in the first memory area of the personal portable terminal is loaded into the second memory area recognizable by the personal computer, and by a predetermined connection method (for example, UMS connection). Preprocessing for transmitting the authentication data to a predetermined application installed in a personal computer may be completed. If it is determined in step 302 that there is no terminal identifier or key value data in the authentication data read out from the first memory area, or if it is determined in step 304 that the authentication data read out from the first memory area is defective, it is shown in FIG. 4. Branching is made to the routine (step 306).

3B is a flowchart illustrating an example of a data synchronization method of a personal portable terminal according to an embodiment of the present invention.

The personal portable terminal is connected to the personal computer through a universal serial bus or the like and requests data synchronization with an application installed in the personal computer (step 351). The data synchronization request in step 301 may be performed by turning on the power of the personal portable terminal in a state where a physical connection is made between the personal portable terminal and the personal computer or by manipulating the personal portable terminal to command data synchronization. The application receives a data synchronization request from the personal portable terminal (step 352) and establishes a session with the personal portable terminal (step 353). According to an embodiment of the present invention, the session may be established by the personal computer recognizing the personal portable terminal as a universal serial bus mass storage (UMS).

When a session with an application installed in the personal computer is established, the authentication data loaded into the second memory area in step 305 of FIG. 3A is transmitted to the application through the UMS connection (step 354), and the authentication data management module of the application receives an image. The validity of the existing authentication data is determined (step 355 and step 356). If it is determined in step 356 that the transmitted authentication data is valid, data synchronization with the personal portable terminal is performed (step 357), and the synchronization routine ends. If it is determined in step 356 that the authentication data is not valid, the personal portable terminal determines that it is not authenticated and ends the data synchronization routine.

3A and 3B may be performed in time series, but according to another embodiment of the present invention, in step 351 of FIG. 3B, the personal portable terminal requests data synchronization, and in step 353 of the personal computer, After the application and the session are established, the second memory area load of the authentication data shown in FIG. 3A may be performed.

4 is a flowchart illustrating an example of a data synchronization method of a personal portable terminal according to an embodiment of the present invention.

Branching at step 306 of FIG. 3A, the authentication data management module of the personal digital assistant loads authentication data request information into a second memory area, and the authentication data request information is transmitted to the application via a UMS connection (step 401). . The application receives the authentication data request information (step 402) and transmits the received authentication data request information to the authentication data management module. The authentication data management module transmits new authentication data including a predetermined or newly created terminal identifier or key value data to the personal portable terminal according to the authentication data request information (step 404), and the personal portable terminal transmits the new authentication data. The received new authentication data is received and recorded in the first memory area of the personal mobile terminal through the authentication data input / output module (step 405). What is written in the first memory area in step 405 may be implemented to receive new authentication data and record it in the second memory area, and then to record the new authentication data in the first memory area when the personal portable terminal is reset or the power is turned on again. When the new authentication data is recorded in the first memory area, when reconnecting the personal portable terminal, the process branches back to step 301 of FIG. 3A to perform a preprocessing routine for data synchronization.

5A and 5B are diagrams illustrating an example of an authentication data structure recorded in the first and second memory areas according to an embodiment of the present invention.

FIG. 5A shows the data structure of authentication data (a) and authentication data request information (b) loaded into the second memory area of the personal portable terminal and the data structure of new authentication data transmitted from the application in response to the authentication data request information (c). Is an illustration of one example).

Referring to (a) of FIG. 5A, (a) illustrates an example of a data structure of authentication data loaded into a second memory area when terminal identifier or key value data exists in the first memory area. When the terminal identifier or key value data exists in the first memory area, the authentication data loaded into the second memory area includes 2 bytes of version information of the authentication data, 1 byte of status code, 8 bytes of terminal identifier, and key value. 16 bytes of data and 16 bytes of checksum bits. Version information is information recorded for version compatibility between the authentication data recorded in the personal portable terminal and the authentication data recorded in the personal computer. The authentication data loaded into the second memory area of the personal portable terminal is determined by the application's authentication data management module to determine whether it is the latest version, and if the version does not match the authentication data processed by the application, the authentication is recorded on the personal portable terminal. Operate to update data. In addition, the status code is a code indicating the status of the authentication data loaded in the second memory area. For example, in the case of (a), the status code may be 0x01, and the status code is normally set by the terminal identifier or key value data. It may mean the case. The terminal identifier may be a unique identifier for identifying the corresponding personal portable terminal, and when the size of the terminal identifier is 8 bytes as shown in (a) of FIG. 5A, a unique terminal identifier of 64 powers of 2 may be generated. The key value data is for encrypting / decrypting digital content transmitted to the personal portable terminal. In addition, the checksum bit is inserted to check the integrity of the terminal identifier or key value data included in the authentication data. According to the present invention, the checksum bit may be a cyclic redundancy checking (CRC) code.

Referring to (b) of FIG. 5A, (b) indicates that there is no terminal identifier or key value data in the first memory area, or that there is a defect in the recorded terminal identifier or key value data (via the checksum bit). Integrity Check) An example of a data structure of authentication data request information for requesting new authentication data from an application. In this case, the status code may be, for example, 0x02, and the status code may refer to a case where new authentication data is requested because the terminal identifier or key value data is not normally set.

Referring to (c) of FIG. 5A, (c) is an example of a data structure of new authentication data transmitted from an application to a personal portable terminal. The new authentication data may include 2 bytes of version information, 1 byte of status code, 8 bytes of terminal identifier, 16 bytes of key value data, 4 bytes of random number, and 16 bytes of checksum bits. The random number may be used to determine the security of the transmitted new authentication data, that is, whether the new authentication data has been transmitted to the personal portable terminal that transmitted the authentication request information. For example, the personal portable terminal generates a predetermined random number when requesting the terminal identifier or key value data from the application, transmits the random number to the application along with the authentication data request information, and records the transmitted random number in the first memory area. . The application receives the authentication data request information from the personal portable terminal, and retransmits the random number received together with the request information to the second memory area of the personal portable terminal together with the new authentication data transmission. When the personal portable terminal receiving the new authentication data is reset, the personal portable terminal inspects the first memory area, reads the new authentication data received from the application from the second memory, and reads the random number recorded in the first memory area. The random number received together with the new authentication data may be compared to determine whether it is a response to the authentication data request information from the personal portable terminal. Such random number comparison may be performed in the authentication data management module of the personal digital assistant. Even when the authentication data loaded into the second memory of the personal portable terminal is illegally leaked or illegally copied and stored in the personal portable terminal of a third party, the validity of the authentication data can be easily verified by comparing the random number. You can secure it. In the case of (c), the status code may be, for example, 0x03, and the authentication data management module of the personal mobile terminal analyzing the status code transmits the authentication data to the first memory area of the personal mobile terminal through an authentication data input / output module. Can be recorded. When writing to the first memory area, the status code may be adjusted to 0x01, that is, a code indicating that the terminal identifier or key value data is normally set.

5B is a diagram showing a data structure of authentication data recorded in the first memory area of the personal portable terminal.

First, in the initial release state of the personal portable terminal, the first memory area may be in a NULL state in which nothing is recorded. In the initial release state, when the personal mobile device first requests data synchronization, the authentication data management module of the personal mobile device adjusts the status code to 0x00 and loads it into the second memory area, and the application analyzes the status code. It is implemented to transmit authentication data for the personal portable terminal, which may have a data structure as shown in FIG. 5A (c), to the personal portable terminal.

Referring to FIG. 5B, (a) is an example of a data structure of authentication data recorded in the first memory area when the terminal identifier or key value data is normally set. When terminal identifier or key value data is normally set, the authentication data recorded in the first memory area may include, for example, a status code of 1 byte, a terminal identifier of 8 bytes, key value data of 16 bytes, and a checksum bit of 16 bytes. In this embodiment, the status code may be set to 0x01.

Referring to FIG. 5B, (b) illustrates an example of a data structure of authentication data recorded in the first memory area when no terminal identifier or key value data exists in the first memory area. In this case, the authentication data may be composed of a status code 1 byte and the above-described random number 4 bytes, the random number is a random number included when transmitting the authentication data request information to the application, as shown in (b) of FIG. It may be the same. In this embodiment, the status code may be set to 0x02.

Embodiments of the invention may include a computer readable medium containing program instructions for performing various computer-implemented operations. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like. Examples of program instructions include machine code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter.

6 is an internal block diagram of a general-purpose computer system that can be employed in the method and system for performing data synchronization of a personal portable terminal according to the present invention.

The computer system includes one or more processors 640 connected to a main memory including random access memory (RAM) 660 and read only memory (ROM) 670. The processor 640 is also called a central processing unit (CPU). As is well known in the art, the ROM 670 serves to pass data and instructions to the CPU unidirectionally, and the RAM 660 typically transfers data and instructions bidirectionally. Used to. RAM 660 and ROM 670 may include any suitable form of computer readable media. Mass storage 610 is bi-directionally coupled to processor 640 to provide additional data storage capability and may be any of the computer readable recording media described above. The mass storage device 610 is used to store programs, data, and the like, and is a secondary memory device such as a hard disk which is generally slower than the main memory device. Certain mass storage devices such as CD ROM 620 may be used. The processor 640 may include one or more input / output interfaces, such as a video monitor, trackball, mouse, keyboard, microphone, touchscreen display, card reader, magnetic or paper tape reader, voice or handwriting reader, joystick, or other known computer input / output device. 630 is connected. Finally, the processor 640 may be connected to a wired or wireless communication network through the network interface 650. Through this network connection, the procedure of the method described above can be performed. The apparatus and tools described above are well known to those skilled in the computer hardware and software arts.

The hardware device may be configured to operate as one or more software modules to perform the operations of the present invention.

According to the method and system for performing data synchronization of a personal portable terminal according to the present invention, it is possible to provide an effect of providing a method for protecting copyright of digital content on the user's personal portable terminal.

In addition, according to the method and system for performing data synchronization of a personal portable terminal according to the present invention, by recording the predetermined authentication data on the personal portable terminal, the digital content can be used only in the authenticated personal portable terminal, the unauthorized personal portable In the terminal, it is possible to prevent unauthorized copying or distribution of digital content by disabling the digital content.

In addition, according to the method and system for performing data synchronization of a personal portable terminal according to the present invention, in the data transmission between the personal portable terminal of the UMS (USB Mass Storage) method and the personal computer, which is currently increasing in utilization, The effect of protecting the copyright of the content can be obtained.

In addition, according to the method and system for performing data synchronization of a personal portable terminal according to the present invention, even if there is no separate driver for data synchronization between the personal portable terminal and the personal computer, smooth data transmission between the two devices as well as digital copyright of the transmitted data The effect is that protection can be achieved.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. It is obvious that modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

Claims (10)

In the method for performing data synchronization in a personal portable terminal, Loading authentication data recorded in the first memory area of the personal portable terminal into a second memory area of the personal portable terminal accessible by the personal computer; If the authentication data is not recorded in the first memory area, transmitting predetermined authentication data request information to a predetermined application installed in the personal computer; Receiving new authentication data from the application; Writing the new authentication data into the first memory area; Transmitting a data synchronization request between the personal computer and the personal portable terminal; Establishing a session for data transmission with the application; Transmitting the authentication data loaded into the second memory area to the application to determine validity; And If it is determined that the authentication data is valid, performing data synchronization between the personal computer and the personal portable terminal according to the control of the application; Method of performing data synchronization of a personal portable terminal comprising a. In the method for performing data synchronization with a personal digital device, Receiving a data synchronization request from the personal mobile terminal; Establishing a session for data synchronization with the personal mobile terminal; Receiving authentication data from the personal portable terminal, wherein the personal portable terminal loads the authentication data recorded in the first memory region of the personal portable terminal into a second memory region of the personal portable terminal accessible from the personal computer; -; Receiving authentication data request information from the personal portable terminal when the authentication data is not recorded in the first memory area; Transmitting new authentication data to the personal mobile terminal; Determining validity of the transmitted authentication data; And If it is determined that the authentication data is valid, performing data synchronization between the personal computer and the personal portable terminal. Method of performing data synchronization of a personal portable terminal comprising a. delete delete The method according to claim 1 or 2, The personal portable terminal is any one of an MP3 player, a PDA, a mobile phone. The method according to claim 1 or 2, The session is established by the personal computer recognizing the personal portable terminal as a universal serial bus mass storage device (USB Mass Storage; UMS), Wherein the first memory area is a bad block processed memory area that is not recognizable by the personal computer, and the second memory area is a memory area recognizable as UMS in the personal computer. How to perform data synchronization on the terminal. The method according to claim 1 or 2, The authentication data includes version information, a terminal identifier of the personal portable terminal, and a status code, wherein the status code has a different bit value depending on whether the authentication data is recorded in the first memory of the personal portable terminal. / Decryption key value data, and one or more of predetermined checksum bits for checking the integrity of the terminal identifier or the key value data. The method according to claim 1 or 2, The new authentication data checks version information, an identifier of the personal portable terminal, a status code, encryption / decryption key value data, random number data having a predetermined size, and integrity of the terminal identifier or the key value data. And at least one of predetermined checksum bits for performing the data synchronization. delete In the personal portable terminal to perform data synchronization with a personal computer, An interface module for communicating with a predetermined application installed in the personal computer; A first memory area for recording authentication data for authentication of the personal portable terminal, the first memory area not being recognized by the personal computer; A second memory area for recording data transmitted from the personal computer and the authentication data loaded in the first memory area; And A firmware for controlling the operation of the personal mobile terminal, The firmware is, An authentication data input / output module for performing input / output of the authentication data recorded in the first memory area; An authentication data management module for loading the authentication data into the second memory area and transmitting the authentication data to the application; And A decryption module for decrypting the data recorded in the second memory area using a predetermined key value included in the authentication data when the application determines that the authentication data is valid; Personal portable terminal comprising a.

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