KR20060042587A - Apparatus for providing power of the mobile terminal - Google Patents

Abstract

The present invention relates to a power supply device of a mobile communication terminal for further increasing the use time of the terminal, MSM (Mobile Station Modem); A first power supply unit for supplying driving power of various loads and driving power of the MSM; A second power supply unit for supplying driving power of the MSM; A first switching unit for selectively outputting power supplied from the first power supply unit or the second power supply unit to the MSM; In addition, output power supplied from the first power supply unit in the normal mode, and selectively output power supplied from the first power supply unit or the second power supply unit according to the remaining power of the second power supply unit in the sleep mode. And a first control unit for controlling the first switching unit to control the first switching unit.

Therefore, the present invention can be equipped with a separate internal rechargeable battery in addition to the battery power to use this as a system power in the sleep mode to reduce the battery consumption can increase the use time of the terminal.

Mobile terminal / battery / power / sleep mode

Description

Apparatus for Providing Power of The Mobile Terminal}

1 is a block diagram showing a power supply apparatus of a mobile communication terminal according to the present invention

* Explanation of symbols for main parts of the drawings

10: MSM 20: external power supply

30: first power supply unit 32: first LDO

40: second power supply 42: second LDO

44: voltage detector 50: first switching unit

60: first control unit 70: second control unit

72: second switching unit

The present invention relates to a mobile communication terminal, and more particularly, to a power supply apparatus of a mobile communication terminal for further increasing the use time of the terminal.

A commonly used portable mobile communication terminal includes user information input means for inputting user information, and a display device for displaying the input information and schedule information in a visible state.

For example, information processing devices such as computers, notebook computers, electronic notebooks, and personal digital assistants (PDAs) for processing a large amount of information are popular, and the next most prominent ones are digital portables, which are being used as communication means. Telephones (cellular phones), personal digital assistants (PCS), and IMT-2000.

Among them, portable mobile communication terminals usually perform user functions and perform various functions according to a user's request. In general, there are methods for performing a corresponding function according to a menu selection input or a shortcut key.

This is done by designating a menu corresponding to a predetermined function and then displaying a designated menu according to a predetermined request input so that when a user selects the menu, a predetermined function according to the selected menu is performed.

In addition, recently, if there is a function that requires the user to perform an icon by selecting each menu, a method of performing the corresponding function is performed by selecting the corresponding icon accordingly, which is proposed to further increase the user's convenience. Way.

On the other hand, while researches are being made to reduce the weight and size of portable mobile communication terminals, as an important factor to be considered to make the terminal lighter and smaller, the capacity and size of the battery have emerged as important factors. There is also active research on the methods available.

In general, the current portable mobile communication terminal has to continue the battery consumption because it must maintain the process of periodically searching for the message coming from the base station through the paging channel (Paging) for the call reception, which is the basic function of the terminal.

That is, the portable mobile communication terminal is in an idle state to obtain information of the base station from time to time, and the power is continuously used for registration, which causes unnecessary battery consumption.

In order to solve this problem, in order to save the battery of the terminal, the slot search method (Slotted Mode) is used to receive the message on the paging channel at regular intervals.

Since this method searches messages only for a certain period, battery consumption can be reduced by putting the terminal to a sleep state except at a slot search time.

Here, the sleep state refers to a state in which only a minimum function (such as a lock search) of the terminal is operated through the minimum power consumption.

However, this method also results in battery consumption due to slot searching in the paging channel by performing slot searching even when no call reception is desired.

The present invention is to solve the above problems, it is an object of the present invention to provide a power supply for further increasing the use time of the terminal.                         

Another object of the present invention is to provide a power supply device using the charging power of the terminal more efficiently.

In order to achieve the above object, the present invention provides a mobile station modem (MSM); A first power supply unit for supplying driving power of various loads and driving power of the MSM; A second power supply unit for supplying driving power of the MSM; A first switching unit for selectively outputting power supplied from the first power supply unit or the second power supply unit to the MSM; In addition, output power supplied from the first power supply unit in the normal mode, and selectively output power supplied from the first power supply unit or the second power supply unit according to the remaining power of the second power supply unit in the sleep mode. The present invention provides a power supply device for a mobile communication terminal including a first control unit for controlling the first switching unit.

The present invention also provides an external power supply for supplying charging power for charging the first power supply and the second power supply, a second switching unit for switching the output of the charging power supplied from the external power supply, and the second power supply. Outputting the charging power supplied from the external power supply to the second power supply when the voltage detection unit for detecting the remaining power supply of the power supply is connected to the external power supply and the remaining power supply of the second power supply detected by the voltage detection unit is equal to or less than a preset level. It further comprises a second control unit for controlling the second switching unit has another feature.

Therefore, according to the present invention, by additionally configuring a separate internal rechargeable battery in addition to the existing power battery, it is possible to selectively output the power of the terminal to increase the use time.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

Referring to FIG. 1, an embodiment of a power supply device for a mobile communication terminal according to the present invention will be described.

As shown, the power supply of the mobile communication terminal according to the present invention is MSM (Mobile Station Modem) (10); A first power supply unit 30 for supplying driving power of various loads and driving power of the MSM 10; A second power supply unit 40 for supplying driving power of the MSM 10; A first switching unit (50) for selectively outputting power supplied from the first power supply unit (30) or the second power supply unit (40) to the MSM (10); In addition, the first power supply unit 30 outputs power supplied from the first power supply unit 30 in the normal mode, and according to the remaining power of the second power supply unit 40 in the sleep mode. It comprises a first control unit 60 for controlling the first switching unit 50 to selectively output the power supplied from the power supply unit 40.

And, in the embodiment of the present invention as a configuration for charging the first power supply unit 30 and the second power supply unit 40, the power supply of the mobile communication terminal is the first power supply unit 30 and the second power supply unit 40. The external power supply unit 20 for supplying the charging power for charging the charge, the second switching unit 72 for switching the output of the charging power supplied from the external power supply unit 20, the second power supply unit 40 When the voltage detector 44 for detecting the remaining power level and the external power source 20 are connected and the remaining power level of the second power source 40 detected by the voltage detector 44 is equal to or lower than a predetermined level, the external power source ( And a second control unit 70 for controlling the second switching unit 72 to output the charging power supplied from the 20 to the second power supply unit 40.

In addition, the first low drop output (LDO) 32 for rectifying the input voltage provided from the first power supply unit 30 and the charge of the external power supply unit 20 output through the second switching unit 72. And a second LDO 42 for rectifying the voltage.

The mobile communication terminal of the present invention uses a removable external battery as the first power supply unit 30 for supplying the driving power of the entire system in the normal mode, and only the driving voltage of the MSM 10 in the sleep mode. As a second power supply unit 40 for supplying, a separate small rechargeable battery is mounted therein and used.

Referring to the operation of the embodiment according to the present invention configured as described in detail as follows.

First, referring to the normal mode operation of the mobile communication terminal, the driving voltage supplied from the first power supply unit 30 is rectified through the first LDO 32 and then loaded into various loads (not shown) and the MSM 10. Supplied.

In other words, the MSM 10 transmits a control signal corresponding to a normal mode state to the first control unit 60, in which the first control unit 60 generates a control signal according to the control signal input from the MSM 10. The switching operation of the first switching unit 50 is controlled to connect the signal line of the first LDO 32 to the power port of the MSM 10.

That is, the first power supply unit 30 is used as a driving power source of the MSM 10.

When the external power supply unit 20, which is a charging device, is connected, a charging voltage of about 4.2 V is supplied from the external power supply unit 20 to the first power supply unit 30 to charge the first power supply unit 30.

On the other hand, when the terminal is switched to the sleep mode according to the user's request, the MSM 10 outputs a sleep mode signal to the first control unit 60, the first control unit 60 is input from the MSM (10) The switching operation of the first switching unit 50 is controlled according to the control signal to connect the signal line of the second power supply unit 40 to the power port of the MSM 10.

That is, the second power supply unit 40 is used as the driving power source of the MSM 10.

However, when the remaining power of the second power supply 40 is discharged below the driving voltage of the MSM 10, the first power supply 30 may be driven by the driving power of the MSM 10 even when the MSM 10 is in the sleep mode. ).

In detail, the voltage detector 44 may receive the voltage of the signal line connected to the second power supply 40 to detect the remaining power of the second power supply 40.

In this case, the first controller 60 periodically receives the remaining amount of the second power source 40 detected by the voltage detector 44, and if the remaining amount of the second power source 40 is less than or equal to a preset level, the first controller 60 receives the first amount. The switching operation of the switching unit 50 is controlled to use the first power supply unit 30 as a driving power source of the MSM 10.

In addition, the second control unit 70 periodically receives the remaining amount of the second power supply unit 40 from the voltage detection unit 44, and the remaining amount of the second power supply unit 40 while the external power supply unit 20 is connected. If less than the set level, the charging power supplied from the external power supply unit 20 is output to the second LDO 42 through the switching operation of the second switching unit 72.

Thereafter, the voltage received from the external power supply unit 20 is rectified through the second LDO 42 and then the second power supply unit 40 is supplied to charge the second power supply unit 40.

That is, the second power supply unit 40 may be charged only when the external power supply unit 20 is connected and the second power supply unit 40 is discharged to a predetermined level or less.

Therefore, in the present invention, a separate rechargeable battery (second power supply) is mounted therein for use as a system power supply in a sleep mode, and a rechargeable battery power supply (second power supply) is used instead of a battery power supply (first power supply) in the sleep mode. By using it, the current consumption of the battery can be reduced and the usage time of the terminal can be increased.

The present invention is not limited to the above-described embodiments, and can be modified by those skilled in the art as can be seen from the appended claims, and such modifications are within the scope of the present invention.

The power supply device of the mobile communication terminal according to the present invention described above has the following effects.

First, by installing a separate internal rechargeable battery in addition to the battery power, it is possible to use the power of the terminal more efficiently by selectively changing the system power according to the operating state (Sleep Mode, Normal Mode) of the terminal.

Second, by using a separate internal rechargeable battery as a system power in the sleep mode, the battery consumption can be reduced, resulting in increased terminal usage time.

Claims (2)

Mobile Station Modem (MSM); A first power supply unit for supplying driving power of various loads and driving power of the MSM; A second power supply unit for supplying driving power of the MSM; A first switching unit for selectively outputting power supplied from the first power supply unit or the second power supply unit to the MSM; And, Outputting power supplied from the first power supply unit in the normal mode, and selectively outputting power supplied from the first power supply unit or the second power supply unit according to the remaining power of the second power supply unit in the sleep mode; The power supply of the mobile communication terminal, characterized in that it comprises a first control unit for controlling the first switching unit. The method of claim 1, An external power supply unit supplying charging power for charging the first power supply unit and the second power supply unit; A second switching unit for switching an output of charging power supplied from the external power supply unit; A voltage detector for detecting a remaining power supply of the second power supply; A second control unit which controls the second switching unit to output the charging power supplied from the external power unit to the second power unit when the external power unit is connected and at the same time the remaining power of the second power unit detected by the voltage detector is less than or equal to a predetermined level; Power supply of the mobile communication terminal, characterized in that it further comprises.

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