KR100835315B1 - apparatus and method for battery controll of mobile device - Google Patents

Abstract

The present invention relates to a power supply control apparatus and method for a portable terminal, and more particularly, a portable terminal for improving power consumption of a battery by adjusting an application of power according to an arbitrary key input and thus increasing the use time of the portable terminal to the maximum. The present invention relates to a power supply control apparatus and method.

In addition, the main unit for performing various functions by the power supplied from the battery; A power supply adjusting unit for supplying or cutting off power of the battery to the main unit and a key signal generating unit for outputting a power on key signal for controlling the power of the battery to be supplied to the main unit;

The main unit outputs a power-off signal to the power supply adjusting unit to control to cut off the battery connected by the power on key signal output from the key signal generating unit and the main unit.

Handheld, terminal, battery, standby, button

Description

Power control apparatus and method for a mobile terminal {apparatus and method for battery controll of mobile device}

1 is a front view and a side view showing the appearance of a portable terminal that can be applied to the present invention,

2 is an electrical block diagram showing a power control device for a portable terminal according to an embodiment of the present invention;

3 is a circuit diagram showing a power supply control apparatus for a portable terminal according to another embodiment of the present invention;

4 is a flowchart illustrating a power control method of a portable terminal according to an embodiment of the present invention.

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

100, 200, 300: portable terminal

110: LCD window 120,241,320: Standby button

130,247: Volume button 140,258: Earphone / USB jack

150,243: power button 160,245: reset button

170,255: microphone 210: key signal generator

220: power supply control unit 230: battery

250: main unit 251: control unit

252: Image processor 253: Display

256: speaker 257: interface unit

259: storage 310: comparator

330: power / reset button

The present invention relates to a power supply control apparatus and method for a portable terminal, and more particularly, a portable terminal for improving power consumption of a battery by adjusting an application of power according to an arbitrary key input and thus increasing the use time of the portable terminal to the maximum. The present invention relates to a power supply control apparatus and method.

Handheld-based portable terminals, such as MP3 players, personal digital assistants (PDAs), and portable multimedia players (PMPs), generally do not switch to active mode to reduce limited battery current consumption. Will operate in a sleep mode that consumes a minimum of current, for example at least 1mA.

However, when the portable terminal is placed in a standby mode, that is, unused state, a small amount of electric current consumed at this time may cause the electric charge charged in the battery to be completely discharged. Therefore, the user is often troublesome to charge the portable terminal, and the life of the battery is also shortened by frequent charging / discharging.

In other words, there is a problem in that the operation of the conventional standby mode can not be a fundamental suppression of the discharge of the battery. In particular, the development trend of the portable terminal is often focused on how compact the device can be made while having the same or superior function as the products of other companies, the battery is also miniaturized. Therefore, as the portable terminal becomes smaller, the above-mentioned problems have a more direct effect on using the product.

The present invention has been made to solve the above-described problem, and in order to prevent current consumption due to the standby mode, the portable device is to cut off the power supply of the battery when not in the active mode, and to apply power according to any key input. It is an object of the present invention to provide a power supply control apparatus and method for a terminal.

In order to achieve the above object, a power supply control apparatus for a portable terminal according to an embodiment of the present invention includes a main unit that performs various functions with power supplied from a battery; A power supply adjusting unit for supplying or cutting off power of the battery to the main unit and a key signal generating unit for outputting a power on key signal for controlling the power of the battery to be supplied to the main unit;

The main unit outputs a power-off signal to the power supply adjusting unit to control to cut off the battery connected by the power on key signal output from the key signal generating unit and the main unit.

In the above configuration, it is preferable that the key signal generation unit includes a comparator having an input terminal connected to the battery and a predetermined key button and an output terminal connected to the power supply adjusting unit.

The main unit may output the power off signal after a predetermined time elapses from the time when the battery is supplied with power, and the comparator may be configured to apply a voltage applied by the key button to the battery through the battery. When the voltage is lower than the voltage, it is preferable to output the power on key signal.

According to another aspect of the present invention, there is provided a method for controlling a power supply of a portable terminal after a step (a) and a step (a) of switching to a standby mode electrically connected to a battery in an inactive mode in which power supply is cut off from the battery. (B) switching from the standby mode to the inactive mode when no key signal is input for a time.

In the above-described configuration, the step (b) includes a step of performing a predetermined function with the power of the battery, wherein the function is preferably a clock display.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the power supply control apparatus and method of a portable terminal according to an embodiment of the present invention.

1 is a front view and a side view showing the appearance of a portable terminal that can be applied to the present invention, illustrating a portable terminal whose main functions are a music player and an image viewer.

As shown in FIG. 1, the portable terminal 100 according to the present invention includes a battery, a main module performing the same function as the music player with the power supplied from the battery, and adjusting the connection between the battery and the main module. Power control module is built in.

In addition, an LCD window 110 displaying various characters, graphic elements, still images, moving images, and the like, which are indicative of the operation and operation state of the portable terminal 100, is disposed in front of the LCD terminal 110. Used to select or receive various functions provided in the portable terminal 100, in particular, the standby mode button 120 used to switch the portable terminal 100 from the inactive mode (sleep mode) to (sleep mode) is It is arranged. Herein, the modes of the portable terminal 100 are classified into an inactive mode, a standby mode, and an active mode according to the connection between the battery and the main module, that is, whether the power is on or off and the operation of the main module. The state of is shown through Table 1 below. That is, Table 1 is interpreted as a classification by the power consumption of the battery.

Battery power supply state Operation state of the portable terminal Inactive mode OFF X Standby mode ON X Active mode ON O

In addition, there are earphones / USB terminal 140 compatible with the earphones, the USB and the adapter for charging the battery, and the microphone hole 170 communicating with an internal microphone (not shown). The reset button hole 160, which is in communication with the reset button for changing the setting of the portable terminal 100 to the initial state, is drilled, and the power button 150 for turning on / off the power and the volume for adjusting the volume The button 130 is arranged.

On the other hand, the front portion of the portable terminal 100 can be seen as seen from the side view of the four sides shown in Figure 1 is preferably a button type, the earphone / USB terminal 140 is USB 2.0 capable of ultra-fast data reception of about 480Mbps It is preferable that it is a terminal that supports.

2 is an electrical block diagram illustrating a power control device of a portable terminal according to an embodiment of the present invention.

As shown in FIG. 2, the electrical configuration of the portable terminal 200 according to the present invention generates a corresponding key signal according to the operation of the battery 230, the key button 240, and the key button 240. The main unit 250 for driving various functions of the portable terminal 200 with the power supplied from the battery 230 based on the key signal generator 210 and various key signals input from the key signal generator 210. And a power supply adjusting unit 220 for adjusting a power supply from the battery 230 to the main unit 250 by a predetermined key signal generated by the key signal generating unit 210. .

In the above-described configuration, the key button 240 includes a standby mode button 241, a power button 243, a reset button 245, and a volume button 247 for each function, with reference to FIG. 1. It performs the same function as each button described.

In particular, the key signal generation unit 210 generates a standby mode key signal based on the operation of the standby mode button 241 and outputs this signal to the power supply adjustment unit 220, whereby the power supply adjustment unit 220 The battery 230 connects the battery 230 and the main part 250 to supply power to the battery 230.

The main unit 250 includes an image processing unit 252 for processing an image signal and outputting the same to the display unit 253, a microphone 255 for converting external sound waves into a corresponding sound signal, and a speaker for converting an audio signal into a corresponding sound wave. (256), the audio processing unit 254 for encoding and receiving the audio signal input from the microphone 255 or decoding the audio signal generated inside the main unit 250 and outputting the audio signal to the speaker 256. , The earphone / USB terminal 258 to which the earphone or portable USB memory is mounted, the portable USB memory mounted on the earphone / USB terminal 258 and various data transmitted / received or connected to the earphone / USB terminal 258 Interface unit 258 for outputting a voice signal, various application programs or firmware (firmware) necessary for the operation of the portable terminal 200, MPEG 1/2 / 2.5 Layer 3, WMA, ASF, OGG, MP3 or BMP Where files of the same format as And a control unit 251 for controlling them collectively based on various key signals generated by the key signal generating unit 210, in particular, the control unit 251 based on a preset algorithm. The power supply adjusting unit 220 is controlled to be turned off between the 230 and the main unit 250.

In addition, although not shown in the main unit 250, a broadcast receiving module for receiving DMB (Digital Multimedia Broadcasting) or AM / FM radio broadcast or recording the received broadcast, and performing a clock display, alarm or broadcast reservation recording function. A real time clock (RTC) module and a recording module for performing voice recording through the microphone 255 may be further provided.

3 is a circuit diagram illustrating a power control apparatus for a portable terminal according to another exemplary embodiment of the present invention. In particular, FIG. 3 is a circuit diagram illustrating a key button 240 and a key signal generator 210 described in the above block configuration.

As shown in FIG. 3, in the circuit configuration of the portable terminal 300 according to the present invention, a Vcc and a GND terminal are connected to a battery 3V to receive a driving current from the battery, and a reference applied through a + IN terminal. a comparator 310 for comparing a reference voltage with an arbitrary voltage applied through the -IN terminal and outputting a predetermined current corresponding thereto, that is, a standby mode signal to the OUT terminal; A predetermined number of standby mode buttons 320 and a power / reset button 330 for turning on / off the -IN terminal of the comparator 310 and the + terminal of the battery and the-terminal of the battery; Including the 'KEY' output terminal for outputting the current generated by the operation of the standby mode button 320 and the power / reset button 330 or the current input through the 'RTC' input terminal to the control unit 251, The OUT terminal of the comparator 310 is connected to the power supply adjusting unit 220.

More specifically, the comparator 310 outputs a predetermined current to the voltage supply adjusting unit 220 when a voltage equal to or lower than the reference voltage according to the operation of the standby mode button 320 is applied through the -IN terminal. By connecting the battery 230 and the main unit 250, the operating state of the portable terminal 300 is switched from the inactive mode to the standby mode.

The standby mode button 320 is used to select or input various functions provided in the portable terminal 300 when the portable terminal 300 is in standby mode, in addition to being used to switch the portable terminal 300 from the inactive mode to the standby mode. In addition, according to this, the main unit 250 performs a predetermined function corresponding to the A (amplitude degree) of the current input from the KEY output terminal. In other words, the main unit 250 is switched from the standby mode to the active mode based on the operation of the standby mode button 320 to consume power of the battery.

On the other hand, the standby mode button 320 or the power / reset button 330 is preferably implemented as a dome switch (dome switch).

4 is a flowchart illustrating a power control method of a portable terminal according to an embodiment of the present invention, which will be described with reference to the portable terminal illustrated in FIGS. 1 to 3.

First, in step S11 the key signal generator 210 generates a standby mode key signal corresponding to the operation of the standby mode button 241 and outputs it to the voltage supply adjusting unit 220.

Next, in step S13, the voltage supply adjusting unit 220 connects the battery 230 and the main unit 250 to change the portable terminal state from the inactive mode to the standby mode. Accordingly, the main unit 250 is supplied with power, and in step S15, the controller 251 controls the image processor 252 to display a clock through the LCD window 110. Here, step S15 is an algorithm pre-programmed in the product to inform the user that the state of the portable terminal has been switched from the inactive mode to the standby mode. Therefore, this step S15 can also be performed with other various methods, for example, a predetermined voice output through the speaker.

Next, in step S17, after the control unit 251 switches to the standby mode, an arbitrary key signal is input from the key signal generator 210 to the main unit 250 for a predetermined time, for example, 10 seconds. Determine if you can. As a result of the determination in step S17, when no key signal is generated during a predetermined time, the flow proceeds to step S25 to control the power supply adjusting unit 220 to turn off the battery 230 and the main unit 250. Accordingly, the portable terminal automatically switches from the standby mode to the inactive mode.

On the other hand, when the key signal is generated during the predetermined time as a result of the determination in step S17, the process proceeds to step S19 to perform an operation corresponding to the key signal. That is, the main unit 250 switches from the standby mode to the active mode. When the execution of the operation in the step S19 is completed, the main unit 250 is switched to the standby mode again (step S21).

Next, in step S23, after the control unit 251 is switched to the standby mode, it is determined whether the power off key signal is input from the key signal generator 210. As a result of the determination in step S23, when the power off key signal is not input, the process returns to step S17. On the other hand, when the power off key signal is input, the process proceeds to step S25.

The apparatus and method for controlling a power supply of a portable terminal of the present invention is not limited to the above-described embodiments and can be modified in various ways within the scope of the technical idea of the present invention.

According to the power control apparatus and method of the portable terminal of the present invention as described above, the power is discharged by cutting off the power supply of the battery in the state that the portable terminal is not used, and the power is applied according to a predetermined key input. Minimize and maximize the use time of the portable terminal.

Claims (7)

A main unit which performs various functions with power supplied from a battery; A power supply adjusting unit which supplies or cuts off power of the battery to the main unit; It includes a key signal generation unit for outputting a power on key signal for controlling the power of the battery to be supplied to the main unit to the power supply adjustment unit, And the main unit outputs a power off signal to the power supply adjusting unit for controlling the main unit to cut off the battery connected by the power on key signal output from the key signal generator. The method of claim 1, The key signal generator includes a comparator having an input terminal connected to the battery and a key button, and an output terminal connected to the power supply adjusting unit. The method of claim 1, And the main unit outputs the power off signal after a predetermined time elapses from the time when the battery power is supplied. The method of claim 2, And the comparator outputs the power on key signal when the voltage applied by the key button is lower than the reference voltage applied through the battery. delete delete delete

Images