KR100768854B1 - Mobile terminal supplying low power operation and driving method thereof - Google Patents

Abstract

The present invention relates to a mobile terminal equipped with a low power function and a driving method thereof, and in particular, an object of the present invention is to enable a call or shooting even when a battery capacity is insufficient by driving only a block related to a call function or a shooting function in a low power mode. The present invention for this purpose is a mobile phone equipped with a shooting function, and controls the entire operation of the terminal during normal operation, the host module 220 to drive only the high frequency module 210 when the low power mode of the call function is set, and the shooting, A sub memory 260 storing a low power booting program having a function, and the boot program is received from the host module 220 in a normal operation, and includes an LCD unit 240, a sub memory 260, an external memory 270, and a camera module. In operation 280, in the low power mode of the photographing function, a booting program included in the sub memory 260 drives a photographing-related key of the LCD unit 240, the camera module 280, and the keypad 290. It is characterized by comprising a multimedia module 260 to.

Description

Mobile terminal with low power function and its driving method {MOBILE TERMINAL SUPPLYING LOW POWER OPERATION AND DRIVING METHOD THEREOF}

1 is a block diagram of a general decaphone.

Figure 2 is a block diagram of a di-car phone according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

210: high frequency module 220: host module

230,260, 270: Memory 240: LCD

250: multimedia module 280: camera module

290: keypad

The present invention relates to a mobile terminal, and more particularly, to a mobile terminal having a low power function and a driving method thereof.

In general, a mobile communication terminal (hereinafter referred to as a mobile phone) requires a boot time until the power is turned on to make a call.

The boot time is the time required for the mobile phone to be in an operating state so that the phone can be turned on.

In general, the booting process of the mobile phone is performed by performing a hardware initialization when the mobile phone is turned on, and simultaneously driving an RF module, a logic module, and an LCD module when the hardware initialization is completed. The process is as follows.

If the power button is pressed while the phone is off, all the hardware inside the phone is initialized.

Afterwards, when the hardware initialization inside the mobile phone is completed, the RF module, the LCD module, and the logic module (eg, MSM, DSP, keypad, etc.) are simultaneously driven.

The RF module is provided with a searcher (Searcher) to find the base station and transmit and receive the necessary information, and through this registers the mobile phone information to the base station to enable a call from the mobile phone.

This mobile phone boot takes 10 seconds or more.

However, in general, a mobile communication terminal has a characteristic of being cut off when a voltage (or current) that cannot drive a basic function is input. This is because the power of the terminal below the cut-off voltage cannot guarantee 100% of the performance of the mobile communication terminal.

However, if you use practically some functions, they can operate below the normal cutoff voltage. This is achieved by low power booting.

In general, a mobile phone to which a digital camera is coupled (hereinafter referred to as a “di-car phone”), as shown in FIG. 1, the high frequency module 110, the host module 120, the main memory 130, and the LCD unit 140. , A multimedia module 150, a sub memory 160, an external memory 170, a camera module 180, and a keypad 190.

The high frequency module 110 is generally responsible for the function for wireless communication.

The host module 120 is connected to the high frequency module 110, the main memory 130, the multimedia module 150, and the keypad 190, and controls the overall operation of the terminal. The host module 120 may be configured as an MSM chip in the case of a CDMA terminal.

The main memory 130 stores a program for executing a terminal operation (call and data communication) and data according to the terminal operation.

The LCD 140 is connected to the multimedia module 150 to display an image according to the operation of the terminal, and comprises a main LCD and a sub LCD. The LCD may be composed of an OLED.

The multimedia module 150 is connected to the host module 120, the LCD 140, the sub memory 160, the external memory 170, and the camera module 180, and processes an image according to the operation of the terminal. Multimedia module 150 of this function is composed of an ASIC for DSP or camera image processing.

The sub memory 160 stores a program for image processing of the multimedia module 150 and data according to image processing.

The external memory 170 is connected to the multimedia module 150 to operate as an extended memory, and may be composed of various types of memory (eg, SD card, CD card, MS card, etc.).

The keypad 190 is mapped to the host module 120 and is responsible for inputting letters, numbers, and specific symbols and setting specific functions.

When the low power boot for the emergency shooting function is executed, the decaphone of such a configuration is switched to a low power state after driving only the remaining blocks except the high frequency module 110.

The reason why the high frequency module 110 is not driven in the low power booting process is that the block consumes a lot of power.

However, in the related art, a block which is substantially not used at the initial low power booting stage for digital camera operation has a disadvantage of shortening the terminal use time by maintaining the low power state after turning on.

That is, conventionally, even if a low power boot is performed, a block that is not used for a digital camera operation also operates in a low power state, and thus a low power state does not last long.

Accordingly, the present invention provides a mobile terminal with a low-power function and its driving to create an emergency call or shooting even in the state of low battery capacity by driving only the module related to the call or shooting function in a low power mode to improve the disadvantages of the prior art The purpose is to provide a method.

The present invention is a mobile terminal equipped with a shooting function in order to achieve the above object, the high frequency module to control the entire drive associated with the call function and the shooting function of the terminal at the time of booting normal operation, if the low power mode of the call function is set A host module for driving only, a sub memory for storing a program for low power booting of the shooting function, and a low power booting program stored in the sub memory when the low power mode of the shooting function is set, to identify the camera module, the LCD and the keypad. And a multimedia module that drives only a key to perform photographed image processing.

In addition, the present invention provides a method of driving a mobile terminal having a recording function in order to achieve the above object, the step of checking whether the low power mode of the shooting function is set, the multimedia module, the LCD module, Driving only a keypad and a camera module, switching the driven modules and the keypad to a low power state, and converting the modules and keypad being driven to the low power state to a normal operation state when a photographing operation is set; Characterized in that configured to perform.

In addition, the present invention provides a method of driving a mobile terminal equipped with a shooting function to achieve the above object, the step of checking whether the low power mode is set, and if the low power mode is set, whether the low power mode of the call function or the shooting function Determining whether the device is in a low power mode; when the low power mode of the call function is determined; switching the host module to a low power state after driving only the high frequency module and the keypad; And driving only the module, the keypad and the camera module, and then switching to the low power state.

In the method, it characterized in that configured to perform the step of turning off the backlight of the keypad when the low power mode is set.

In the apparatus and method, low power booting is performed by specific key input or menu selection of the keypad.

Hereinafter, the present invention will be described in detail with reference to the drawings.

Technical configuration of the present invention will be described in detail in the preferred embodiment. In the preferred embodiment of the present invention will be described a number of specific details such as a specific processing flow as well as accompanying drawings to help the overall understanding of the present invention. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

Figure 2 is a block diagram of a mobile phone for an embodiment of the present invention, as shown therein, the high frequency module 210, the host module 220, the main memory 230, the LCD unit 240, the multimedia module 250 , A sub memory 260, an external memory 270, a camera module 280, and a keypad 290, wherein the keypad 290 is mapped to the host module 220 in a normal operation and multimedia in a low power operation. The module 250 is configured to map only the photography related key.

Since the high frequency module 210, the LCD unit 240, and the camera module 280 perform the same functions as those of the block of FIG. 1, a detailed description thereof will be omitted.

The host module 220 is configured to drive only the high frequency module 210 when the low power mode for the call function is set.

The multimedia module 250 receives the boot program from the host module 220 to drive the LCD unit 240, the sub memory 260, the external memory 270, and the camera module 280 during normal operation. In the low power mode, a booting program included in the sub-memory 260 is used to drive the shooting-related keys of the LCD 240, the camera module 280, and the keypad 290.

That is, the multimedia module 250 has a self-booting function, receives a booting program from the host module 220 to execute a booting operation during normal operation, and operates a low power mode item on a menu or a specific key of the keypad 290. When the low power mode is set, the low power booting operation is executed using a booting program stored in the sub memory 260.

The keypad 290 includes a specific key for low power booting, and includes two keys for low power operation of a call function and low power operation of a photographing function. Here, although only one key is input for each low power operation, a plurality of keys may be combined to set a low power mode if necessary.

Referring to the operation and effect of the embodiment of the present invention configured as described above are as follows.

First, when a power key is input while the power is off, the host module 220 executes a boot program stored in the main memory 230 after the mobile phone is initialized, and then the high frequency module 210 and the multimedia module 250. And a boot program to the multimedia module 250.

Accordingly, the multimedia module 250 executes the boot program received from the host module 220 to drive the LCD unit 240, the sub memory 260, the external memory 270, and the camera module 280.

Thereafter, the host module 220 controls the high frequency module 210 and the multimedia module 250 to execute a call or a photographing operation by a user's key manipulation.

In addition, in an embodiment of the present invention, a low power mode may be set by pressing a specific key in a state in which the terminal power is turned off or in a current operation state. In addition, in the embodiment of the present invention, when it is determined that the battery capacity is insufficient in the operating state, the low power mode may be set by menu selection or specific key selection of the keypad 290.

However, in the embodiment of the present invention, when the low power mode is set as the specific key input and the low power mode is set as the menu input, the operation for the low power is the same. Therefore, only the case of the specific key input will be described.

First, when the user inputs a key for the low power mode of the call function in the keypad 290 while the power is turned off, the host module 220 executes a low power booting program stored in the main memory 230 to execute a high frequency module ( Only 210 is driven.

In this case, the multimedia module 250, the LCD unit 240, the sub memory 260, the external memory 270, and the camera module 280 remain in an off state, and the keypad 290 maps only to the host module 220. do.

Thereafter, the host module 220 switches to the low power mode so that the state in which the call can be made is maintained.

In addition, when the user inputs a key for the low power mode of the shooting function in the keypad 290 while the power is turned off, the host module 220 and the high frequency module 210 remain in an off state and recognize the key input. The multimedia module 250 executes a low power booting program stored in the sub memory 260 to initialize and drive only the LCD 240 and the camera module 280 related to photographing.

In this case, the keypad 290 only maps keys related to the photographing function to the multimedia module 250, and the backlight is turned off. This is to reduce battery power consumption by unnecessary key driving and backlight driving.

However, the LCD 240 may select whether to use the backlight as an option, and allow the LCD 240 to drive only the main LCD or the sub LCD. However, the driving of the sub LCD may be applied only when the sub LCD has a function of displaying a captured image.

Thereafter, the multimedia module 250 switches to the low power mode to wait for the photographing operation to be executed.

On the other hand, while the preferred embodiment of the present invention has been described above, the present invention is not limited to the above embodiments, those skilled in the art related to the present invention and the spirit of the present invention described in the claims Various modifications and variations of the present invention will be possible without departing from the scope thereof.

As described in detail above, when the low power mode is set, the present invention operates only a block for a call function or a photographing function, so that a desired function can be executed even in a state in which battery power is low, thereby improving user convenience. Can be achieved.

Claims (8)

A host module that controls the overall operation related to the call function and the photographing function of the terminal at the time of normal booting; A sub memory for storing a program for low power booting of a recording function; When the low power mode of the shooting function is set, the low power function includes a multimedia module configured to execute a low power booting program stored in the sub memory to drive only the camera module, the LCD and the keypad, and to process the captured image. Mobile terminal. Key pad with key for low power mode setting of call function and key for low power mode setting of shooting function, A host module which controls the entire driving related to the call function and the photographing function of the terminal when the normal operation is booted, and drives the high frequency module and the keypad only when the low power mode of the call function is set by the key input of the keypad; A sub memory for storing a program for low power booting of a recording function; When the low power mode of the shooting function is set by the key input of the keypad, a low power booting program stored in the sub memory is executed to include a camera module, an LCD unit, and a multimedia module configured to perform photographed image processing while driving only the keypad. Mobile terminal equipped with a low power function, characterized in that. The mobile terminal of claim 1, wherein the multimedia module is configured to execute an operation of a low power mode by a specific key input or menu selection of a keypad. The mobile terminal according to claim 1 or 2, wherein the keypad is configured to drive only a specific key related to shooting in the low power mode of the shooting function. Checking whether the low power mode of the shooting function is set, Driving only the multimedia module, the LCD module, the keypad, and the camera module when the low power mode is set; Transitioning the driven modules and keypad to a low power state; And when the photographing operation is set, converting the modules and the keypad which are driven in the low power state to a normal operation state. Verifying that the low power mode is enabled, Determining whether the low power mode of the call function or the low power mode of the shooting function is set when the low power mode is set; If it is determined that the call function is a low power mode, the host module drives only the high frequency module and the keypad and then switches to the low power state; And when the multimedia module determines the low power mode of the capturing function, converts the multimedia module into a low power state after driving only the LCD module, the keypad, and the camera module. The method of claim 5 or 6, wherein the low power mode is set by menu selection or a specific key operation. The method of claim 5 or 6, further comprising: turning off the backlight of the keypad and the LCD when the low power mode is set.

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