KR100626517B1 - Method for downloading for a operating system program in a mobile communication terminal - Google Patents

Abstract

The present invention relates to a method for downloading an operating system program in a mobile communication terminal.

The present invention provides a method comprising: securing an empty data area in addition to a current operating system data area stored in a memory unit when connected to an external computer to download an operating system program; Downloading a new operating system program from the computer and storing it in the secured data area; Checking whether the download is normally completed by executing booting after the download is completed; According to the check result is configured to include a method comprising the step of completing the boot to the new operating system or the existing existing operating system downloaded.

Therefore, when the operating system program (or firmware) is downloaded by connecting an external computer or the like to the mobile communication terminal, the present invention secures a free space in a data area of a memory in which the operating system program is stored in the mobile communication terminal. By downloading new operating system data while maintaining the operating system area of the system, you can boot to the current operating system area even if an error occurs during the download and the download is interrupted. By using a method that supports a high transmission speed, such as continuing to perform an interrupted download, there is an effect of increasing the stability in downloading the operating system program.

Description

How to download operating system program on mobile terminal {METHOD FOR DOWNLOADING FOR A OPERATING SYSTEM PROGRAM IN A MOBILE COMMUNICATION TERMINAL}

1 is a flow chart showing the operation of the operating system program download method in the mobile communication terminal of the present invention.

Figure 2 is a block diagram showing a simplified configuration of an apparatus for implementing an operating system program download method in a mobile communication terminal of the present invention.

*** Description of the symbols for the main parts of the drawings ***

10: mobile communication terminal 11: a wireless transceiver

12 input / output unit 13 memory unit

14: external interface unit 15: main control unit

20: computer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal. In particular, when an external computer is connected to a mobile communication terminal to download an operating system program (or firmware), the present invention relates to a data area of a memory in which the operating system program is stored in the mobile communication terminal. By downloading new operating system data while freeing up space and maintaining the current operating system area, users can boot to the current operating system area even if an error occurs during the download and the download is interrupted. A method for downloading an operating system program in a mobile communication terminal that not only continuously interrupts download by using a method such as USB (Universal Serial Bus) such as USB, but also improves stability in downloading an operating system program. will be.

In general, when downloading an operating system program called firmware (Firmware) to the mobile terminal, the terminal is connected to the administrator's computer and the download is executed. During this download, the cable between the terminal and the computer is removed or an unexpected error occurs. The download is interrupted.

Then, JTAG installed for debugging inside the Universal Asynchronous Receiver Transmitter (UART) port that directly connects the mobile terminal to the computer, such as the data communication port, or the modem chip (for example, mobile station modem (MSM), etc.) of the terminal. (Joint Test Action Group) By using the port to continue the interrupted download to save the entangled mobile communication terminal, the terminal is no longer downloaded in a way that supports high speed transmission speed, such as Universal Serial Bus (USB) It is impossible to do this, and there is a problem in that it is inconvenient to visit a service center in order to use a UART port or a JTAG port.

Accordingly, the present invention has been proposed to solve the above-mentioned problems. When the operating system program (or firmware) is downloaded by connecting an external computer or the like to the mobile communication terminal, the operating system program is executed in the mobile communication terminal. The purpose of the present invention is to provide a way to download new operating system data while maintaining the current operating system area by securing free space in the data area of the memory to be stored.

In order to achieve the above object, the present invention provides a method of providing an empty data area in addition to a current operating system data area stored in a memory unit when connected to an external computer to download an operating system program; Downloading a new operating system program from the computer and storing it in the secured data area; Checking whether the download is normally completed by executing booting after the download is completed; And completing the booting of the downloaded new operating system or existing existing operating system according to the check result.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating an operating process of an operating system program download method in a mobile communication terminal according to the present invention. As shown in FIG. 1, an operating system stored in a memory unit is connected to an external computer to download an operating system program. Securing an empty data area other than the data area (S10 to S11); Downloading new operating system programs from the computer and storing them in the secured data area (S12 to S15, S21); Checking whether the download is normally completed by executing a boot after the download is completed (S16, S17); Comprising the new operating system or the existing operating system downloaded according to the result of the check and if there is a data area backed up to the computer, and restores it to the memory unit (S16 ~ S20).

In addition, a simplified configuration of the apparatus for implementing the present invention, as shown in Figure 2, the wireless transmission and reception unit 11, input and output unit 12, memory unit 13, external interface unit 14 and main control unit A mobile communication terminal 10 including a mobile station modem (MSM) 15 and an external computer 20 are included.

The mobile communication terminal 10 supports voice calls, data communication, and other wireless communication services, and provides a user interface and a data processing module for downloading an operating system program through a connection with an external computer 20. The wireless transceiver 11 transmits and receives a radio signal (RF, Radio Frequency) to and from the mobile communication system side, and the input / output unit 12 consists of a keypad and a liquid crystal display, and the user inputs various data or outputs the processing result thereof. The memory unit 13 includes a multi chip package (MCP) in which a NAND flash memory and a synchronous dynamic random access memory (SDRAM) are combined, and the external interface unit 14 Supports a communication method such as USB (Universal Serial Bus), and when connected to an external device through a wired cable performs data communication, charging, etc., the main control unit 15 is a terminal In addition to being in charge of the overall control in the device 10 and controls the process of downloading a new operating system program according to the present invention.

The computer 20 includes a manager program for downloading an operating system program and the like to the mobile communication terminal 10 and is connected to the terminal 10 via an external interface unit 14 and downloaded to the terminal 10. When the operating system program is downloaded, the data of the data area stored in the memory unit 13 of the terminal 10 is backed up and stored, and after the download is completed, restores to the memory unit 13 again. do.

Through the above configuration, when the external computer is connected to the mobile communication terminal to download an operating system program (or firmware), the present invention secures a free space in a data area of a memory in which the operating system program is stored. By downloading new operating system data while maintaining the current operating system area, users can boot to the current operating system area even if an error occurs during the download and the download is interrupted. By using a method that supports a high transmission speed such as), it is possible to continue the interrupted download and increase the stability in downloading the operating system program.

In the case of the recent mobile communication terminal 10, NAND flash memory (SDRAM) and SDRAM (synchronous dynamic random access memory) are stored in the memory unit 13 to store a video, an image, etc. as multimedia functions are enhanced. It uses a multi chip package (MCP) in the form of a combined memory.

In this case, the NAND flash memory stores an operating system program (or firmware), various application programs, and user data (data such as a phone book, a video, and an image stored by a user), and the main control unit 15 is stored in the SD RAM. Is used to temporarily store data stored in the NAND flash memory in order to process various data. For example, when the mobile communication terminal 10 boots, the main control unit 15 stores an operating system area stored in the NAND flash memory. After copying to RAM, booting of the terminal 10 is performed.

Therefore, the present invention can be applied to a case where an operating system program is downloaded from a mobile communication terminal having a memory having a multi-chip package form as described above, wherein the NAND flash memory of the multi-chip package is larger than the data size of the operating system program. Assume that the memory is more than doubled.

Prior to applying the present invention, the mobile communication terminal 10 is connected to an external computer 20 through a communication cable such as USB, and downloads to the computer 20 to download an operating system program through the connection. The manager program must be running.

When the operating system program is downloaded from an external computer 20 and connected to the computer 20 through the external interface unit 14 of the mobile communication terminal 10 (S10), the main control unit 15 downloads a new operating system program. Prior to the following, an empty data area other than the current operating system data area stored in the memory unit 13 is secured. For this purpose, the storage space of the memory unit 13 is checked to determine whether a new operating system program can be downloaded.

As a result of the determination, if there is free space in the memory unit 13, the main control unit 15 sets the free space as a data area for downloading a new operating system program, otherwise, NAND flash of the memory unit 13 After backing up the data area other than the current operating system data area stored in the memory to the computer 20 (S11), after the download is completed, booting into the new operating system and existing existing operating system area Next, the data area backed up by the computer 20 is restored to the memory unit 13 after the deletion thereof (S19).

Here, it is possible to back up only a part of the data of the 'other data area' so that the main control unit 15 does not back up all the data and secures a storage space for storing a new operating system program. The data area of the memory unit 13 to be downloaded should be at least the size of the new operating system program to be downloaded.

As shown in FIG. 1, the NAND flash memory may be divided into a "current operating system area" in which an operating system program is stored, and a "other data area" in which various application programs and user data are stored. In the case of downloading a new operating system program, it is assumed that all data stored in the 'other data area' is backed up to a storage device in the computer 20 to secure a storage space for downloading a new operating system program later. When the backup of the 'other data area' is completed, the NAND flash memory is in a state of 'current operating system area' and 'empty area' with no data.

Subsequently, the main controller 15 downloads and stores a new operating system program from the computer 20 while freeing space in the data area of the NAND flash memory of the memory unit 13 to maintain the current operating system area. (S12 to S15, S21), that is, after the download of the new operating system program is started, the main controller 15 checks whether an error occurs in the download (S12, S13), and the NAND flash memory of the memory unit 13. Set the error checking area to indicate whether an error has occurred and complete the download (S14, S15, S21).

Here, the main controller 15 recognizes that an error occurs in the download when the download is interrupted because the communication cable connected between the corresponding terminal 10 and the computer 20 is removed or a data transmission error occurs during the download. At this time, the displayed error check region is allocated one bit of the data area of the NAND flash memory of the memory unit 13 to become '0' or '1' depending on the download error.

Therefore, after the download of the new operating system program is completed, the NAND flash memory is allocated with the 'current operating system area', 'error checking area', and 'new operating system area' as shown in FIG.

Then, when the download is completed and the setting of the error check area related to the download, the main control unit 15 is notified of the result of checking the error checking area in the boot loader (boot loader) by rebooting the mobile communication terminal 10 It is determined whether the download is normally completed (S16, S17).

In this case, if the download is normally completed, the main control unit 15 reads the data of the 'new operating system area' from the NAND flash memory of the memory unit 13 to the SD memory in the initial stage of booting, and when booting is completed, Delete the data stored in the 'current operating system area' (S18), copy the data of the 'data area' backed up to the external computer 20 in the step (S11) to the NAND flash memory of the memory unit 13 The download is terminated by restoring the original (S19). Here, when the data stored in the 'current operating system area' is deleted, the data stored in the 'error checking area' is also deleted. As a result, the NAND flash memory has a status of 'new operating system area' and 'other data area' as shown in FIG. Becomes

On the other hand, if the download is not completed normally because the communication cable connected between the terminal 10 and the computer 20 or the download is interrupted due to a data transmission error during the download, booting from the main control unit 15 is initiated. Read the data stored in the 'current operating system area' to complete booting into the current operating system, and in step S11, the data of the 'data area' backed up to the external computer 20 in the step (S11) of the NAND flash of the memory unit 13. The download is terminated by copying to the memory and restoring the original (S19).

At this time, if the download is not completed as described above, after completing the booting to the current operating system in the step (S20) and before restoring the data backed up to the external computer 20, an error occurs in the download to the user It is also possible to check whether or not to retry the download and to retry the download accordingly.

As described above, in the present invention, when an operating system program (or firmware) is downloaded by connecting an external computer or the like to the mobile communication terminal, the present invention provides a free space in a data area of a memory in which the operating system program is stored in the mobile communication terminal. By downloading the new operating system data while maintaining the current operating system area, it is possible to boot to the current operating system area even if an error occurs during the download and the download is interrupted. By using a method such as (Universal Serial Bus) to support a high-speed transfer rate, it is possible to not only continue to download interruptedly, but also to increase stability in downloading an operating system program.

Claims (8)

Securing an empty data area in addition to the current operating system data area stored in the memory unit when the operating system program is downloaded in connection with an external computer; Downloading a new operating system program from the computer and storing it in the secured data area; Checking whether the download is normally completed by executing booting after the download is completed; Comprising the step of completing the booting to the new operating system or the existing operating system downloaded in accordance with the result of the check. The method of claim 1, wherein securing a data area other than the current operating system data area stored in the memory unit comprises: checking whether a new operating system program can be downloaded by checking a free space of the memory unit; As a result of the determination, if there is free space in the memory unit, the free space is set as a data area for downloading a new operating system program, otherwise, a data area other than the current operating system data area is backed up to the computer. Operating system program download method in a mobile communication terminal comprising the step of. 3. The method of claim 2, wherein a data area other than the current operating system data area of the memory unit backed up to the computer is at least the size of a new operating system program to be downloaded. The method of claim 1, wherein downloading a new operating system program from the computer and storing the new operating system program in the secured data area comprises setting an error checking area in a memory unit to download a new operating system program according to whether an error occurs during the download. Operating system program download method in a mobile communication terminal, characterized in that. The method of claim 4, wherein the error checking area indicates whether a download error occurs by allocating 1 bit from a data area of a memory unit. The method of claim 1, wherein the checking of whether the download is normally completed by performing booting after completing the downloading is performed by checking an error checking area in a boot loader at boot time to determine whether the download is normally completed. Operating system program download method in a mobile communication terminal, characterized in that. The booting method of claim 1, wherein the booting of the new operating system or the existing operating system downloaded according to the checking result is performed after booting to the new operating system at the initial booting stage when the download is normally completed. Deleting the current operating system area existing when it is completed; If the download is not normally completed, the method of downloading an operating system program in a mobile communication terminal, characterized in that further comprising the step of completing the boot to the current operating system existing at the beginning of the boot. The method of claim 1, wherein the booting of the new operating system or the existing operating system that has been downloaded according to the checking result comprises: when a data area other than the current operating system data area of the memory unit is backed up to a computer, After the booting of the operating system is completed and the existing operating system area is deleted, the operating system program download of the mobile communication terminal further comprising the step of restoring the data area backed up by the computer to the memory unit. Way.

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