KR20040103186A - A method and a device of saving battery current for gsm type mobile phone - Google Patents

Abstract

PURPOSE: A device for saving power supply of a portable terminal and a method therefor are provided to minimize power consumption by periodically detecting paging signals and detect interrupt signals by operating an interrupt routine, thereby increasing hours for using a battery of a portable terminal. CONSTITUTION: A power supply unit(110) outputs operating power supply to each functional unit of a mobile terminal. A control unit(200) monitors and controls each functional unit. A clock unit(300) selectively outputs an inner clock signal by a control signal applied from the control unit. A digital baseband unit(400) processes a digital baseband signal by the inner clock signal and wirelessly connects to a base station. A flash memory(500) outputs a stored program. An SRAM(Static Random Access Memory)(600) stores variable data and outputs the stored data. A melody camera unit(700) outputs a melody signal and processes an image signal. An audio unit(900) processes a voice signal.

Description

Power saving device and method of mobile terminal {A METHOD AND A DEVICE OF SAVING BATTERY CURRENT FOR GSM TYPE MOBILE PHONE}

The present invention is to suppress unnecessary current consumption in the deep sleep state of the GSM mobile terminal, in particular, to ensure that the operating power is supplied to the minimum required unit of the functional unit for maintaining the deep sleep state, and the other function block the power supply The present invention relates to a power saving device and method for a portable terminal which reduces unnecessary battery current consumption and increases standby time and usage time.

The mobile communication system uses a registered mobile terminal (MS: MOBILE STATION), moves freely within the corresponding service area and communicates with the other party at any time and anywhere by wireless communication, and moves simultaneously using limited radio frequency resources. The advanced technology for communicating is applied, and is classified into a code division multiple access (CDMA) method, a GSM method, and the like according to the channel allocation method using the limited frequency resources as described above.

The GSM (GLOBAL SYSTEM FOR MOBILE COMMUNICATION) mobile communication system is a hybrid of the frequency division multiple access (FDMA: FREQUENCY DIVISION MULTIPLE ACCESS) and the time division multiple access (TDMA) By dividing and allocating frequency resources into a plurality of channels, a mobile terminal (MS: MOBILE STATION or UE: USER EQUIPMENT) allows a digital mobile communication system to simultaneously allocate and occupy each channel.

The SM method is a standard mobile communication system operating method adopted mainly in Europe (EUROPE), and the code division multiple access (CDMA) method is a standard mobile communication system operating method adopted mainly in Korea and the United States.

The mobile terminal MS of the mobile communication system is supplied with operating power from a battery having a limited capacity, and it is important to reduce the current consumption so that it can be used for a long time. In general, the mobile terminal has a communication or built-in function. Since the idle time (IDLE or STANDBY) time is longer than the time used for the operation of the operation, minimizing the current consumption in the standby state can extend the use time or life of the battery.

Reducing the current consumption of the mobile terminal in the standby (IDLE or STANDBY) state is a DEEP SLEEP operation method, the deep sleep operation method is to reduce the current consumption to the minimum in the standby state, the standby Reducing the current consumption in the state further extends the service life of the battery.

Hereinafter, a power saving method of a portable terminal according to the prior art will be described with reference to the accompanying drawings.

It is attached to explain the prior art, Figure 1 is a functional configuration of the power saving device of the portable terminal according to the prior art, Figure 2 is a flow chart of the power saving method of the portable terminal according to the prior art.

Hereinafter, a power saving device of a gsm portable terminal according to the prior art will be described with reference to FIG.

An analog baseband unit (ABB: ANALOG BASEBAND) (ABB) 10 for processing baseband analog signals of a GSM type mobile terminal (MS); A power supply unit (LDO: LOW DROP REGULATOR) 15 for supplying the operation power to each functional unit of the portable terminal by processing the operation power included in the analog baseband unit 10 and applied from a battery; A control unit 20 receiving operating power from the power supply unit 15 and monitoring and controlling each functional unit of the portable terminal; A clock unit 30 receiving operating power from the power supply unit 15 and outputting an internal clock signal under the control of the control unit 20; A digital baseband unit (DBB) 40 which is supplied with operating power from the power supply unit 15 and operated by an internal clock applied from the clock unit 30; A memory unit 50 for receiving operation power from the power source unit 15 and storing data; A melody camera unit 60 receiving operating power from the power supply unit 15, outputting a melody signal, and photographing an image signal; A bias unit 70 receiving operating power from the power supply unit 15 and applying a bias voltage to a corresponding functional unit; An audio unit 80 receiving a bias voltage from the power supply unit 15 and processing a voice level signal; The high frequency unit 90 is connected to the digital baseband unit 40 to process a high frequency (RF) signal.

Hereinafter, according to the prior art of the configuration described above, the power saving device of the SM type mobile terminal will be described in detail with reference to the accompanying drawings.

The control unit 20 monitors and controls each function unit. An interrupt signal, to which a control command is applied, is detected from a keyboard constituting the analog baseband unit 10 or is called through the high frequency unit 90. It is checked whether a PAGING signal is detected, and if the PAGING or interrupt signal is not detected, the clock is controlled by the clock unit 30 so that an internal clock is applied to the digital baseband unit 40. Do not print.

As described above, the digital baseband unit 40, which is not supplied with the internal clock, is supplied with operating power from the power supply unit 15, but does not consume current because it cannot perform signal processing, and the digital baseband unit 40 The memory unit 50, the melody camera unit 60, the bias unit 70, and the audio unit 80, which are connected and operated, also operate from the power supply unit 15 because the digital baseband unit 40 does not perform signal processing. Power is supplied, but the current cannot be consumed because it cannot perform its function.

As described above, the clock unit 30 does not output the internal clock to the digital baseband unit 40 according to the control signal of the control unit 20, and thus another functional unit including the digital baseband unit 40 also operates. It is powered but operates in DEEP SLEEP which consumes minimum current due to inability to process signals.

In the case of operating in the deep sleep state as described above, as an example, the current consumption of about 95% is reduced than in the case of normal operation, thus extending the use time or life of the battery power supply.

The power supply unit LDO 15 converts a DC voltage applied from a battery to a voltage level suitable for each functional unit. For example, the voltage of the battery may vary depending on a discharge state. In general, the DC voltage ranges from 4.2 V to 3.4 V, and converts the battery voltage into a DC voltage of about 2.8 V required by each functional unit, also called a DC-to-DC converter. It is included in the analog baseband unit (ABB) 10 to supply the corresponding operating power required for each functional unit of the portable terminal.

When the GSM mobile terminal is in a standby state that is not used for communication or function operation, that is, an interrupt signal for inputting various control commands through the corresponding keyboard is not generated or detected or a call received by a called ( If the PAGING signal is not detected from the high frequency unit 90, the function is operated in the deep sleep mode and the clock unit 30 does not output the internal clock signal. Therefore, each functional unit consumes only a minimum current. Likewise, it reduces current consumption by about 95%.

Hereinafter, a power saving method of a conventional GSM mobile terminal will be described with reference to FIG. 2.

The control unit 20 of the GSM mobile terminal is configured to continuously determine whether an INTERRUPT signal to which a control command is input or a PAGING signal is detected from the high frequency unit 90. 1 step (S10); If the reception call (PAGING) or the interrupt signal is not detected by the determination in the step (S10), the clock unit 30 is operated from the power supply unit (LDO) 15 while the operating power is continuously supplied to each functional unit. A second step (S20) of controlling to prevent the internal clock from being supplied to the corresponding functional unit by controlling; A third step (S30) of operating the DEEP SLEEP mode in which each function unit does not perform signal processing and consumes only a minimum current by the control of the step; When the interrupt signal or the PAGING signal is detected as determined in the first step S10, the clock unit 30 is provided with the corresponding operating power supplied from the power supply unit 15 to each functional unit. A fourth step (S40) of controlling the internal clock to supply an internal clock to the corresponding functional unit; In the step S40, a fifth step S50 is performed in which communication is performed by each function unit that is normally supplied with the operating power source and the internal clock signal, or the selected function is operated.

Hereinafter, a power saving method of a GSM mobile terminal according to the related art having the above configuration will be described in detail with reference to the accompanying drawings.

The control unit 20 of the GSM mobile terminal monitors the analog baseband unit to monitor whether an interrupt signal is detected and continuously monitors whether a PAGING signal is detected from the high frequency unit 90 (S10). ).

As a result of the monitoring of the step S10, when no incoming call or interrupt signal is detected, the control unit 20 performs an operation voltage suitable for each functional unit by the power supply unit 15 processing the voltage of the battery. In this state, the clock unit 30 is controlled to prevent the internal clock signal from being output (S20), so the SM type portable terminal consumes a minimum power. It is operated as (S30).

In addition, when the reception call (PAGING) or interrupt signal is detected as a result of monitoring in the step (S10), the control unit 20 is the clock unit in the state that the operating power is supplied from the power supply unit 15 to each functional unit Since the control unit 30 controls the internal clock signal to be output (S40), the GSM mobile terminal communicates or operates the corresponding function (S50).

The mobile terminal may communicate by originating in addition to communication by reception, and may operate various functions such as an electronic book, a game, a schedule management, and the like.

Therefore, according to the prior art as described above, the deep sleep mode power saving method of the mobile terminal is to consume the minimum current in the standby state, according to one experimental example, the power supply to about 95% compared to the normal operation state You can save.

However, the SM type mobile terminal has developed a multimedia technology for transmitting a video signal and various additional functions have been developed and added, and thus consumes a lot of power as the time for normal operation increases, thereby reducing the usage time of the battery provided in the power unit. there is a problem.

The present invention sets a predetermined period in the mobile terminal according to the multi-frame signal received from the mobile communication base station, detects the paging signal in the period, and operates the interrupt routine to detect the interrupt signal, thereby minimizing the power consumption of the mobile terminal. It is an object to provide a power saving device and method.

The present invention has been made in order to achieve the above object, the power supply unit for outputting the corresponding operation power to each functional unit of the portable terminal; A control unit receiving operating power from the power unit and monitoring and controlling each functional unit; A clock unit receiving operating power from the power unit and outputting or not outputting an internal clock signal according to a control signal applied from the control unit; A digital baseband unit which receives operating power from the power supply unit, processes the digital baseband signal according to an internal clock signal applied from the clock unit, and wirelessly connects to the base station by the high frequency unit; A flash memory receiving operating power from the power supply unit and outputting various programs; An SRAM receiving operating power from the power supply unit to record, store, and output variable data; A melody camera unit receiving an operating power from the power supply unit, outputting a melody signal, and processing an image signal; Characterized in that the configuration is composed of an audio unit for receiving the operating power from the power supply unit for processing a voice level signal.

The present invention also provides a paging process for determining whether a paging signal is detected by the controller of the portable terminal when the multi-frame cycle time is reached; Determining that the paging signal is detected in the above process and supplying power to each functional unit normally and communicating with each other; An interrupt process for determining whether an interrupt signal is detected in the process and returning to the communication operation process when an interrupt signal is detected; If the interrupt signal is not detected as determined in the above process, the interrupt routine may be operated, and the deep sleep process may be performed to save power by operating the DB power supply unit and the SRAM power supply unit.

1 is a functional block diagram of a power saving device of a portable terminal according to the prior art;

2 is a flowchart of a method for saving power of a portable terminal according to the prior art;

3 is a functional diagram of a power saving device of a gsm mobile terminal according to the present invention;

4 is a flowchart of a method for saving power of a GSM portable terminal according to the present invention;

5 is a multiframe time state diagram of a predetermined period according to the present invention;

** Explanation of symbols on the main parts of the drawing **

100: analog baseband section 110: power section

111: power control unit 112: DVD power unit

113: flash power unit 114: SRAM power unit

115: input and output power supply unit 116: analog power supply unit

200: control unit 300: clock unit 400: digital baseband unit

500: flash memory 600: SRAM

700: melody camera portion 800: bias portion 900: audio portion

Hereinafter, the present invention will be described with reference to the accompanying drawings, a power saving device and method of a GSM mobile terminal.

To illustrate the present invention, Figure 3 is a functional block diagram of a power saving device of the GSM portable terminal according to the present invention, Figure 4 is a flow chart of a power saving method of the GSM mobile terminal according to the present invention, Figure 5 The multiframe time state diagram of the predetermined period by this invention is shown.

Hereinafter, a power saving device of a GSM mobile terminal according to the present invention will be described with reference to FIG.

Outputting the respective operating power to the respective functional units of the GSM mobile terminal, which is included in the analog baseband unit (ABB) (Analog Baseband) (100), and the control unit 200 to be described later A DB power supply 112 for supplying a corresponding operating power to the clock unit 300 and the digital baseband unit (DBB) 400; A flash power supply 113 supplying a corresponding operation power to a flash memory 500 to be described later; An S-RAM power supply unit 114 for supplying a corresponding operation power to an S-RAM to be described later; An input / output power supply unit 115 for supplying a corresponding operating power to the melody camera unit 700 and the bias unit 800 which will be described later; An analog power supply unit 116 for supplying operating power to an audio unit 900 to be described later; A power control unit that monitors and controls the operation power output of each power unit, and controls the flash power unit 113, the input / output power unit 115, and the analog power unit 116 to output or not output the operating power under the control of the controller 200. A power supply unit (LDO) LOW DROP REGULATOR 110 formed of 111;

The operation power is received from the DB power supply unit 112 of the power supply unit 110 and monitors and controls each functional unit of a GSM type mobile terminal, and analyzes the multiframe number input from the digital baseband unit. Processing to set a multiframe time, which is a paging signal detection period, and control the clock unit 300 to output an internal clock signal to the digital baseband unit 400 at the multiframe time, which is the paging signal detection period. If the detection period is not the multiframe time, the operation power supply is cut off to all the functional units while only the interrupt routine is operated, and if the paging signal is detected during the multiframe time, the paging signal detection period. By controlling the power supply unit 110 so that all the operating power is supplied, and by controlling the clock unit 300 to continue to output the internal clock And a controller 200 that,

A clock unit 300 that receives the corresponding operating power from the DB power supply unit 112 of the power supply unit 110 and outputs or does not output an internal clock signal according to a control signal applied from the control unit 200; ,

The operation power is received from the DB power supply 112 of the power supply unit 110 and the digital baseband signal is processed by an internal clock signal applied from the clock unit 300. And a digital baseband unit (DBB) which wirelessly connects to a base station (BS) by a connected high frequency unit and receives a multi-frame number of a mobile communication system and applies it to the control unit 200. 400,

A flash memory 500 that receives a corresponding operation power from the flash power supply 113 of the power supply 110 and outputs various programs stored therein;

S-RAM (600) for receiving the corresponding operating power from the SRAM power supply unit 114 of the power supply unit 110 to record and store and output variable data;

A melody camera unit 700 which receives a corresponding operating power from the input / output power source 115 of the power source 110 and outputs a melody signal, and processes an image signal;

A bias is added to the melody camera unit 700 and receives a corresponding operating power from the input / output power supply unit 115, and outputs a bias, pull up, and pull down power signals of each functional unit. Part 800,

The audio unit 900 receives a corresponding operating power from the analog power unit 116 of the power unit 110 and processes an audio signal.

Hereinafter, according to the present invention having the configuration described above, the power saving device of the portable terminal will be described in detail with reference to the accompanying drawings.

The control unit 200 constituting the GSM type mobile terminal (MS) is wirelessly connected to a base station (BS) through a high frequency unit, receives a multiframe number from the base station (BS), and receives the received multi When the frame number (MULTI-FRAME NUMBER) is analyzed to generate a multiframe signal, which is a periodic signal for receiving a PAGING signal, and becomes a periodic time due to the multiframe signal. The internal clock signal is applied to the digital baseband unit 400 by controlling the clock unit 300 to generate an internal clock signal.

The multi-frame number is generated in the base station, and the number of times indicating the number of the multi-frame is increased as the radio wave environment is good, and about 235 ms time in which 51 data of 4.615 ms units are repeated as one frame. The worse the radio propagation environment, the smaller the multiframe number.

For example, in the GSM method of Hong Kong and South Africa, which has a good radio wave environment, the multiframe number is assigned to 9, the European area to 6, and the radio environment to China, which is assigned to 2, As shown in FIG. 5, the multiframe cycle time in the GS scheme is in the range of 230 ms to 2.2 s.

When the controller 200 outputs a multiframe signal to the clock unit 300 at a periodic multiframe time as described above, and the clock unit 300 receives the multiframe signal, the digital baseband unit An internal clock signal is output to 400.

The control unit 200 outputs a control signal to the power control unit 111 configured in the power supply unit 100 of the analog baseband unit 100 when the multiframe time is not reached as described above. All power units except for the 112 and the SRAM power supply 114 are controlled to not output the operating power, and thus only operate the control unit 200, the clock unit 300, the digital baseband unit 400, and the SRAM 600. Power is supplied and other functional units are not powered.

Since the SRAM 600 records and stores variable data, in order to store and maintain the variable data, the corresponding power supply needs to be continued, and the control unit operates only an interrupt routine (INTERRUPT ROUTINE). By detecting the case that the control command is directly input.

Since the digital baseband unit 400 and the clock unit 300 detect whether a PAGING signal is received only at the time when the multiframe signal is applied from the controller 200, the multiframe signal is received from the controller 200. If it is not applied, it operates in the standby (IDLE or STANDBY) state while consuming the minimum operating power, and in the standby state, the digital baseband unit 400 detects a control command directly input through the mobile terminal. Only interrupt routine (INTERRUPT ROUTINE) is run.

As described above, the operating state operating at the minimum current is the DEEP SLEEP operating state according to the present invention.

That is, since the clock signal is not applied to the digital baseband unit 400 in the deep sleep state, the signal is operated in a state in which no signal other than the interrupt signal is processed, thereby minimizing the current consumption and directly inputting to the portable terminal. Since only the interrupt routine for detecting the control command is operated, the flash memory 500 is operated so that the operating power is not supplied. Therefore, the operation is stopped to consume no current, and the SRAM 600 does not operate but is written. To maintain the storage state of the variable data consumes a minimum of current, the melody camera unit 700 is operated so as to completely stop the operation does not consume the current, the bias unit 800 is a minimum for maintaining the bias The current is continuously consumed, and the audio unit 900 is not operated but is applied by the bias unit 800. It will consume a small current by the bias voltage.

The current consumed by the GS-type portable terminal in the deep sleep operation state is, according to an experimental example, that the current consumed by the analog baseband unit 100 and the digital baseband unit 400 is about 1 mA. In the display portion of the LCD, a current of about 0.3 to 0.5 mA is consumed, and a current consumed by SRAM and other DEVICEs and elements for the variable data is about 0.3 mA / H to 0.5 mA / H.

As described above, the minimum current consumed in the deep sleep state is referred to as a base current (BASECURRENT), and when the sum is about 1.5 mA / H to 2 mA / H.

As described above, the operation power output state control of the power supply unit (LDO) 110 is performed by a control signal applied from the control unit 200. In the deep sleep state, the SRAM power supply unit 114 and the DB power supply unit 112 are used. Only the LDOs that make up the) will work.

When the controller 200 generates a multiframe signal at a multiframe time by the corresponding process, that is, when it is time to detect a PAGING signal transmitted from the BS base station BS, the controller ( The control unit 200 controls the clock unit 300 to output an internal clock signal only to the digital baseband unit 400, and the digital baseband unit 400 detects a paging signal through a high frequency unit and outputs the detection result. The control unit 200 applies.

When the paging signal is detected as described above, that is, when the multi-frame signal is output, the GS type mobile terminal MS temporarily wakes up from the deep sleep state and operates the high frequency part, thus about 70 mA / H to 80 mA. Consumes a current of / H.

When the multiframe signal is output but the paging signal is not transmitted from the base station, and when the paging signal detection period due to the multiframe period is 2.2 s, the sum of the base current and the current consumption for the paging signal is summed. The current consumed per hour H is about 3 mA to 4 mA.

Therefore, as an experiment example, it is assumed that the battery capacity of the power supply unit 110 is 800 mA, and when the user does not perform any operation using the mobile terminal MS, the interrupt signal is not detected, about 200 to 270. The time H can be maintained as a standby (IDLE or STANDBY) time.

That is, in the related art, since the power supply unit 110 maintains all of the operating state, a large amount of current is consumed even in the deep sleep state, but the present invention blocks some components of the power supply unit 110 from outputting the operating power in the deep sleep state. In this way, the functional unit that is not supplied with the operating power does not consume the current and does not consume the leakage current.

According to one experimental example, the current improved as described above by the present invention is about 0.5 mA / H to 1 mA / H, and increases the standby time of 40 hours to 80 hours based on the battery of the 800 mA / H capacity This will increase the waiting time by about 45%.

Hereinafter, a power saving method of the mobile terminal according to the present invention will be described with reference to FIG. 4.

The control unit 200 of the GSM type mobile terminal MS transmits a paging signal transmitted from the base station when the multiframe cycle time is generated by analyzing the received multiframe number transmitted from the base station BS. Determining whether it is detected by the controller 200 to determine whether the multi-frame time for detecting the paging signal of the base station at a predetermined period is reached (S100); A paging process comprising a step S110 of determining whether a paging signal transmitted from the base station BS is detected when the multi-frame time has been determined in the step S100;

When the paging signal is detected in the paging process, the power is normally supplied to each functional unit and communication operation is performed. The control unit 200 controls the power unit 110 to supply the operating power of each functional unit normally. Process (S120); In the process (S120) by the operating power normally supplied to the mobile terminal (MS) is a communication operation process consisting of a process (S130) for communicating or performing the operation,

In the process, it is determined whether an INTERRUPT signal for directly inputting a control command is detected, and if an interrupt signal is detected, an interrupt process (S140) for feeding back to the communication operation process (S120), and

If the interrupt signal is not detected as determined in the interrupt process (S140), only the interrupt routine is operated in the digital baseband unit 400, and only the DB power unit 112 and the SRAM power unit 114 operate power. The controller 200 operates only an interrupt routine for detecting a control command directly applied to the mobile terminal MS in the digital baseband unit 400 and generates another routine (ROUTINE). Is not operating process (S150); The DC power supply 112 for controlling the power supply unit 110 to supply operating power to the digital baseband unit 400 and the SRAM power supply 114 for supplying operating power to the SRAM 600 output power. And blocking operation power output of another power supply unit (S160); The process (S160) consists of a deep sleep process consisting of a process (S170) for operating in a deep sleep power saving mode to minimize power consumption.

Hereinafter, according to the present invention having the above-described configuration, since the GSM type mobile terminal MS analyzes and processes the multiframe number received from the BS base station BS, the multiframe time generated or generated is It is determined whether or not (S100).

When the multiframe time is reached in the determination S100, the controller 200 outputs a multiframe signal to the clock unit 300, and the clock unit 300 outputs an internal clock signal to the digital baseband unit 400. Since the digital baseband unit 400 operates by the internal clock signal, the digital baseband unit 400 searches for the corresponding high frequency unit to determine whether a PAGING signal is received from the base station BS (S110).

When the paging signal is received in the determination (S110), the control unit 20 controls the power control unit 111 of the power supply unit 110 to perform a normal power supply (S120), and receives a normal power supply as described above. The mobile terminal MS communicates in response to the received paging (S130).

In addition, when the paging signal is not received in the paging process (S110), the controller 200 determines whether an interrupt signal is detected from the digital baseband unit 400 (S140), and the interrupt signal is detected in the determination. When the control unit returns to the communication operation process (S120), normal power is supplied to the mobile terminal (S120), and operation is performed by the input control command (S130).

The operation is to call the other party or to use various functions provided in the mobile terminal.

When the interrupt signal is not detected as determined in the interrupt process (S140), the controller 200 controls the digital baseband unit 400 to operate only an interrupt routine (S150) and the power unit 110. By controlling the other power supply unit 113, 115, 116 except for the power supply unit 112 and the SRAM power supply 114, so as not to output the operating power, the control unit 200, the clock unit 300, the digital baseband unit ( The operating power is supplied only to the 400 and the SRAM 600 (S160), and the controller 200 controls the clock unit 300 to operate in the DEEP SLEEP mode. ) Operates in a power saving operation that consumes minimal current.

Accordingly, the present invention controls the power supply unit 100 to partially operate in the deep sleep mode, thereby minimizing the current consumption, thereby increasing the use time of the battery compared to the conventional method of operating all the power supply units.

According to the present invention having the above configuration, when the SM-type portable terminal does not operate by communication and interruption, the power supply is partially supplied, so that the minimum current is consumed and the leakage current is blocked, thereby increasing the battery usage time. There is an industrial use effect.

In addition, since the battery usage time of the portable terminal increases, it is possible to communicate and operate for a long time, thereby improving the reliability of the user.

In addition, since the battery is used for a long time, there is an industrial use effect to prevent environmental pollution and save resources.

Claims (11)

A power supply unit for outputting a corresponding operation power to each functional unit of the portable terminal; A control unit for receiving operating power from the power unit and monitoring and controlling each functional unit; A clock unit receiving operating power from the power unit and outputting or not outputting an internal clock signal by a control signal applied from the control unit; A digital baseband unit which receives operating power from the power supply unit, processes the digital baseband signal according to an internal clock signal applied from the clock unit, and wirelessly connects to the base station through a high frequency unit; A flash memory receiving an operating power from the power supply unit and outputting a stored program; SRAM for receiving and receiving operating power from the power supply unit to record and store the variable data, and A melody camera unit for receiving an operating power from the power unit and outputting a melody signal to process an image signal; And an audio unit configured to receive an operational power from the power unit and to process a voice level signal. The method of claim 1, wherein the digital baseband unit, And a multiframe number, which is wirelessly received from a base station through the high frequency unit, to the controller. The method of claim 1, wherein the control unit, Paging signal detection period is set by analyzing the multiframe number inputted from the digital baseband part, Controls the clock unit to output the internal clock signal to the digital baseband unit during the paging signal detection period, cuts off the operation power supply to all the functional units while operating only the interrupt routine at a time other than the detection period, And when the paging signal is detected during the paging signal detection period, controlling the power supply unit to supply all operating power, and controlling the clock unit to continuously output the internal clock. According to claim 1, The melody camera unit further comprises a bias unit for outputting a bias and pull-up and pull-down power signals of each functional unit. The method of claim 1, wherein the power supply unit, A DB power supply unit supplying operation power to the control unit, the clock unit and the digital baseband unit; A flash power supply unit supplying operation power to the flash memory; An SRAM power supply unit for supplying operation power to the SRAM; An input / output power supply unit supplying operation power to the melody camera unit; An analog power supply unit supplying operation power to the audio unit; And a power controller configured to monitor and control the operation power output of each power unit. According to claim 1, The power supply unit of claim 1, wherein the power supply unit is included in the analog baseband unit. The method of claim 5, wherein the power control unit, And a control unit configured to control the flash power unit, the input / output power unit, and the analog power unit to not output or output operating power by the control of the controller. The control unit of the mobile terminal determines the paging signal is detected when the cycle time of the multi-frame, and Determining that the paging signal is detected in the above process, supplying power to each functional unit normally, and performing communication operation; An interrupt process for determining whether an interrupt signal is detected in the process and returning to the communication operation process when an interrupt signal is detected; If the interrupt signal is not detected in the above process, the interrupt routine is operated, and the power saving of the portable terminal is characterized in that the deep sleep process is performed to control the output of the DB power unit and the SRAM power unit so as to save power. Way. The method of claim 8, wherein the paging process, Determining whether the controller of the portable terminal has reached a multi-frame time for detecting a paging signal at a predetermined period; And determining whether a paging signal transmitted from a base station is detected when the multi-frame time has been determined in the above process. The method of claim 8, wherein the communication operation process, Controlling the power supply unit to control the power supply unit to supply operation power of each functional unit normally; The power saving method of the portable terminal, characterized in that the portable terminal is made by the communication and operation process by the normally supplied operating power. The method of claim 8, wherein the deep sleep process, Operating an interrupt routine for detecting a control command directly applied by the controller and not operating another routine; Controlling the power unit to output the power to the DB power supply unit supplying the operation power to the digital baseband unit and the SRAM power supply unit to supply the operation power to the SRAM and to cut off the operation power output of the other power unit; The power saving method of the mobile terminal, characterized in that the process made to operate in the deep sleep power saving mode to minimize the power consumption by the above process.