KR100521025B1 - Device and the Method for controlling the user data of mobile phone - Google Patents

Abstract

The present invention is to prevent the loss of user data by switching the power supply such as sudden disconnection of the battery before the user's data stored in the temporary storage device such as volatile memory is stored in the permanent storage device such as non-volatile memory. An object of the present invention is to provide a user data loss prevention control apparatus and a control method of the mobile communication terminal.

To this end, the present invention provides a microprocessor having an input / output (IO: Input Output) port for recognizing the moment when the battery of the terminal is separated from the main body of the terminal, and the microprocessor is detected when the battery is separated through the input / output port. It includes a data storage unit for storing user data stored in volatile memory under non-volatile flash memory under the control of the processor, and provides a useful effect of preventing user data loss due to sudden power supply change of the terminal.

Description

Control device for preventing user data loss of mobile communication terminal and its control method {Device and the Method for controlling the user data of mobile phone}

The present invention relates to a control device and method for preventing user data loss in a mobile communication terminal, and more particularly, user data stored in a temporary storage device such as a volatile memory is permanent storage such as a nonvolatile memory. The present invention relates to a user data loss prevention control device of a mobile communication terminal and a control method thereof for preventing a loss of user data due to a power supply such as sudden removal of a battery before being stored in a device.

In general, portable electronic devices use a battery as a source of power required for operation. The battery converts chemical energy of an internal active material into electrical energy by an electrochemical reaction, which plays a decisive role in the opening of the information age. Batteries are essential for all portable electronics, from toys to advanced products.

However, since the battery has a limited use time, it causes a lot of restrictions on the use of portable electronic products. Thus, the battery is classified into a primary battery that is disposed of in one use and a secondary battery that can be repeatedly recharged. The battery occupies an indispensable place in wireless communication devices such as mobile phones, mobile communication terminals, common frequency communicators, wireless data transceivers, and position measuring systems, as well as laptops and camcorders.

These portable devices require lightweight secondary batteries and continuous use for a long time. For this purpose, nickel-cadmium (Ni-Cd) batteries, nickel-hydrogen (Ni-MH) batteries, lithium-ion (Li-ion) batteries, and lithium polymers ( Li-Polymer) batteries have been developed and used. In recent years, lithium-ion (Li-ion) batteries, which have excellent characteristics in energy density, cycle life and other performances, have been commonly used.

The power source of the mobile communication terminal uses a battery as described above, and is generally designed to separate the battery pack by a drop shock to prevent damage when the terminal falls.

At this time, since the terminal is not normally terminated, data which is still stored in the temporary storage device such as volatile memory among the user data is not stored in the nonvolatile memory and is lost.

As the function of the terminal increases, the amount of user data of the terminal continues to increase. Accordingly, a file system using a flash memory is used in the terminal.

In the flash memory, a write operation and an erase operation are distinguished, and thus, if the above situation occurs during the update of the flash memory, the file system may be damaged.

Accordingly, the present invention has been proposed to solve the above-described problems, and the user may suddenly disconnect the battery before the user data stored in the temporary storage device such as the volatile memory is stored in the permanent storage device such as the nonvolatile memory. It is an object of the present invention to provide a user data loss prevention control apparatus and a control method of the mobile communication terminal for preventing the same power is switched to lose user data.

Control device for preventing user data loss of a mobile communication terminal according to the present invention for achieving the above object inputs an interrupt signal generated from the power supply unit at the moment when the battery is separated from the main body during normal operation of the terminal A microprocessor that minimizes power consumption by switching the power supply of a device that consumes a large amount of power by recognizing it through an input, and when the battery is separated from the main body, maintains the power supply under control of the microprocessor. And a data storage unit for moving and storing user data stored in the volatile memory to the nonvolatile flash memory.

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In the movement storage of the user data, the power supply is maintained for a very short time (several to several hundreds ms) from the time when the power is stopped by the battery separation by adjusting the time constant value of the RC (resistance and condenser) circuit of the power supply unit. And a separate small capacity rechargeable backup battery to maintain power when the battery is disconnected from the body.

According to an aspect of the present invention, there is provided a method of controlling user data loss prevention of a mobile communication terminal, the method comprising: generating an interrupt signal from a power supply unit and transmitting the interrupt signal to a microprocessor when a battery is separated from a terminal body during normal operation of the terminal; The microprocessor receives the interrupt signal to drive an interrupt service routine to switch power supply to a device that consumes a lot of power, thereby minimizing power usage of the terminal main body and non-volatile flash of user data stored in the current volatile memory. Moving to memory and storing.

The user data stored in the volatile memory is adjusted for a time constant value of the RC (resistance and condenser) circuit of the power supply unit to supply power for a very short time (several to several hundreds ms) from the point where the power is interrupted by the battery separation. While this is maintained, it is moved to a nonvolatile flash memory and stored, and the power supply is maintained by a small capacity rechargeable backup battery separately provided when the battery is separated from the terminal body.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an internal operating state of a terminal according to an embodiment of a user data loss prevention control apparatus of a mobile communication terminal to which the present invention is applied. Describe the operation.

The microprocessor 110 controls the control operation for preventing the overall user data loss according to the present invention, and has a ROM for storing a predetermined user data loss prevention control operation program, the data storage unit 180 And a flash ROM for permanently storing data and user data generated during the execution of the operation program of the microprocessor 110, and a RAM temporarily storing data related to the user data loss prevention control and user data.

The audio unit 120 receives voice data from the microprocessor 110 and simultaneously amplifies the voice data, converts the voice data into a mechanical audio signal that can be heard by the user, and outputs the converted audio signal.

The RF transceiver 150 converts an RF signal including voice data and image data from a transceiver end of a terminal into a radio signal and transmits the signal to a base station through an antenna, while receiving an RF signal from the base station and receiving an intermediate frequency (IF). The signal is converted into a signal and output to the microprocessor 110.

The key input unit 130 includes both a key provided on the side of the terminal and a plurality of numeric keys and function keys provided on the keypad, and outputs key data for the keys to the microprocessor 110, and the LCD. The display unit 140 receives and displays display data on key data input from the key input unit 130 from the microprocessor 110, and displays an operation state and time of the mobile communication terminal.

The present invention provides a microprocessor 110 with an input / output (IO: Input Output) port for recognizing the moment when the battery 170 is separated from the main body of the terminal through the power supply unit 160. When it is detected that the battery is disconnected from the terminal by causing an interrupt to occur in the 110, the microprocessor 110 may use other components such as the RF transmitter / receiver 150 and the LCD display 140 that have high power consumption to minimize power consumption. The power supply of the device is switched to supply power only to the microprocessor 110 and the data storage unit 180 of the terminal, and user data still stored in the volatile memory (RAM) is stored in the nonvolatile memory (flash ROM). To prevent loss of user data.

The power supply unit 160 uses RC (resistance and condenser) circuits for stable supply of power. When the time constant value of the RC circuit is properly adjusted, the power supply unit 160 has a very short time (several to hundreds of hundreds) from the point where the power is interrupted by battery separation. ms) power supply can be maintained and during this time it is possible to store user data from RAM to non-volatile flash memory (ROM).

FIG. 2 is a diagram illustrating an operation process of a control routine for preventing user data loss when an interrupt occurs in a terminal of the present invention. When the battery 170 is separated from the terminal main body, it is determined by an input / output (IO) port of the microprocessor 110. Interrupt is generated 111, the Interrupt Service Routine (ISR) 112 of the microprocessor 110 controls the power block to minimize the power consumption once, the task that handles the user data, that is, the user interface Signals that the battery 170 has been separated from the main body of the terminal, such as the task (UI Task) 113 and the file system task (FS Task) 114, respectively, the corresponding task receives the signal is a data volatile memory (RAM) ) Into a nonvolatile flash memory (ROM).

In order to maintain power when the battery 170 is detached from the terminal body, another method may be installed in addition to the above method.

3 is a flowchart illustrating the overall operation flow according to the control method for preventing user data loss according to an embodiment of the present invention. When the operation is started, the battery 170 is separated from the terminal body in the normal operation 301 of the mobile communication terminal. Determine (302).

If the battery 170 is disconnected from the terminal body as a result of the determination 302, the power supply unit 160 generates an interrupt signal indicating that the battery 170 is disconnected from the terminal body in operation 303, and then input / output (IO) port of the microprocessor 110. In step 304.

The microprocessor 110 receives an interrupt signal indicating that the battery 170 is disconnected from the main body of the terminal from the power supply unit 160 and operates an interrupt service routine (ISR) in the microprocessor 110 to minimize power consumption of the terminal (305). .

Minimizing the power consumption of the terminal 305 is to switch the power supply of the other power supplies such as the RF transmission and reception unit 150, LCD display unit 140, such as high power consumption, the microprocessor 110 and the data storage unit of the terminal Only power 180 is supplied.

Then, the user interface task 113 and the file system task 114 respectively transmit a signal indicating that the battery 170 is disconnected from the main body of the terminal, and the corresponding tasks receiving the signal transmit current data from the volatile memory (RAM). Moving storage 306 to a non-volatile flash memory (ROM).

As described above, the user data, which is still stored in the volatile memory, is stored in the nonvolatile memory (flash memory) to prevent the user data from being lost.

As described in detail above, the present invention provides a sudden power supply of a terminal by storing user data stored in a temporary storage device such as volatile memory in case of an emergency such as sudden battery detachment from the terminal body. It provides a useful effect of preventing user data loss due to a supply change.

1 is a block diagram showing an internal operating state of a terminal according to an embodiment of a user data loss prevention control apparatus of a mobile communication terminal to which the present invention is applied.

2 is a view showing the operation of the control routine for preventing user data loss when an interrupt occurs in the terminal of the present invention.

3 is a flow chart showing the overall operation flow according to the user data loss prevention control method of an embodiment of the present invention.

Claims (10)

In the control device for preventing user data loss in the mobile communication terminal, Recognizes the moment when the battery is separated from the main body during normal operation of the terminal by receiving the interrupt signal generated from the power supply through the input port (IO: Input Output) to minimize power consumption by switching the power supply of the device with high power consumption. With a microprocessor, And a data storage unit configured to move the user data stored in the volatile memory to the non-volatile flash memory under the control of the microprocessor when the battery is separated from the main body. Device for preventing user data loss of the terminal. delete delete The method according to claim 1, The movement and storage of the user data is performed while the power supply is maintained for a very short time (tens of tens to hundreds of ms) from the time when the power is interrupted by the battery separation by adjusting the time constant value of the RC (resistance and condenser) circuit of the power supply unit. Control device for preventing user data loss of a mobile communication terminal. The method according to claim 1 or 4, And a separate small capacity rechargeable backup battery to maintain power when the battery is separated from the main body. In the method for preventing user data loss in the mobile communication terminal, Generating an interrupt signal from a power supply unit and transmitting the interrupt signal to a microprocessor when the battery is separated from the terminal body during normal operation of the terminal; The microprocessor receives the interrupt signal to drive an interrupt service routine to switch power supply to a device that consumes a lot of power, thereby minimizing power usage of the terminal main body and non-volatile flash of user data stored in the current volatile memory. Control method of preventing user data loss of a mobile communication terminal comprising the step of moving to the memory. delete delete The method according to claim 6, By supplying the user data stored in the volatile memory to the time constant value of the RC (resistance and condenser) circuit of the power supply unit, a very short time (several to hundreds of ms) of power supply from the point of time when the power is interrupted by the battery separation is achieved. A control method of preventing user data loss of a mobile communication terminal which is moved to and stored in the nonvolatile flash memory while being maintained.  The method according to claim 6 or 9, Control method of preventing user data loss of a mobile communication terminal to maintain power supply by a separate small capacity rechargeable backup battery when the battery is separated from the terminal body.