KR20080095520A

KR20080095520A - Apparatus and method of power control in apparatus

Info

Publication number: KR20080095520A
Application number: KR1020070040109A
Authority: KR
Inventors: 김종대
Original assignee: 엘지전자 주식회사
Priority date: 2007-04-25
Filing date: 2007-04-25
Publication date: 2008-10-29

Abstract

The present invention relates to a power supply control apparatus and a method for controlling a power supply to perform a smooth operation of the terminal device.

The power control method in the terminal according to the present invention, when the power is applied to the terminal determines whether the temperature is below a certain temperature, and if it is below a certain temperature to display a selection list of whether to supply power to the peripheral device input power supply command from the user When the power supply to the peripheral device is started and the terminal is booted when a predetermined temperature or more, as a normal, there is an effect that allows the terminal to operate smoothly.

Description

Apparatus and Method of power control in apparatus

1 is a view showing the configuration of a terminal according to an embodiment of the present invention.

2 is a flowchart illustrating a power supply control process of a peripheral device according to an exemplary embodiment of the present invention.

Most of the terminals released these days have a hard disk drive.

For example, a 2.5-inch hard disk is built into a portable multimedia player ("PMP") or navigation.

In order to provide a large amount of content or to play a map or a program, a configuration including a hard disk is essential.

In particular, the PMP has a built-in navigation function, so when you carry it, you can watch movies, watch TV, and listen to music.

On the contrary, in recent years, the navigation of the car has been added to the movie, music and TV functions, which can be used in the car.

As such, a hard disk drive must be present in a terminal that performs various functions.

However, when trying to operate a system with a built-in hard disk left in a vehicle in sub-zero weather in winter, the hard disk may not work under the specification of the hard disk.

In this case, since the system does not operate normally, a problem arises in that the user increases the temperature inside the vehicle and waits for the system to operate normally.

Of course, when the temperature sensor inside the battery in the terminal is connected to the charging circuit and the battery becomes hot or cold, the charging circuit of the charging circuit battery automatically turns off (OFF) to prevent damage to the battery.

However, when the temperature is low, the battery performs low temperature sensing (sensing), but the system does not meet the low temperature specification of the hard disk.

An object of the present invention is to provide an apparatus and method for controlling power in a terminal for preventing malfunction of a hard disk at a predetermined temperature or less.

Another object of the present invention is to provide a power control apparatus and method for increasing the temperature of a system before normal booting when it is below a certain temperature.

According to an aspect of the present invention, there is provided a power control apparatus for a terminal, including: a key input unit configured to receive input signals for power supply and shutdown commands; A battery unit configured to detect a temperature of a terminal when a power supply command signal is transmitted from the key input unit; A power management unit determining whether the temperature measured by the battery unit is lower than or equal to a predetermined temperature; And a controller configured to control power supply of peripheral devices by using temperature information received from the power manager.

As one example, the power management unit is a circuit for adjusting the power supply to the devices, it characterized in that the terminal to supply the power of the device in sequence until a certain temperature.

As an example, the control unit may control to supply power to peripheral devices when the temperature measured by the temperature sensor is below a predetermined temperature.

In one example, the control unit supplies power to the peripheral devices, characterized in that the control of the peripheral devices is turned on through the GPIO.

As an example, when the terminal starts to boot and detects that the terminal temperature is lower than a predetermined temperature, the controller displays a selection list on whether to increase power by supplying power to the peripheral device.

As one example, the control unit is characterized in that the control to proceed to boot normally if the temperature measured by the temperature sensor is above a certain temperature.

Power control method in the terminal according to the present invention for achieving the above object, (a) determining whether the temperature is below a certain temperature when the power is applied; (b) displaying a selection list on whether to supply power to a peripheral device when the temperature is below a predetermined temperature as a result of the determination of step (a); (c) starting to supply power to a peripheral device when a power supply command is input as a result of the determination of step (b); (d) proceeding to boot normally when a predetermined temperature or more is reached.

As an example, when the power supply cancel command is input as a result of the determination of step (b), the method may further include shutting off the supply of power to the peripheral device.

As an example, after the step (c), if the stop command of the power supply to the peripheral device is input, characterized in that it further comprises the step of shutting off the power supply.

As an example, step (a) is characterized in that the temperature detected by the temperature sensor in the battery is transmitted to the control unit through the power management unit.

Referring to the accompanying drawings, a power control apparatus and method in a terminal according to an embodiment of the present invention as described above are as follows.

Referring to FIG. 1, the terminal device 100 according to the present invention is a terminal for receiving an input signal for a power supply and shutdown command and a power supply command signal from the key input unit 102. When the temperature of the battery rises through the sensor inside the battery while charging the battery and the battery unit 104 to detect the temperature of the charging circuit 106 and the battery unit to prevent the battery damage by cutting off the charge Peripheral device using the power management unit 108 to determine whether the temperature measured at 104 is below a predetermined temperature and the peripheral device 110 for performing various functions of the terminal and the temperature information received from the power management unit 108 It is a configuration that includes a control unit 122 for controlling the power supply of (110).

The peripheral device 110 displays a screen according to an operation and receives a key input command from a user in a touch screen format. The peripheral device 110 stores data and a storage device 114 and a PC (PC) in which a program is built. Network unit 116 for a network or Internet connection or a network connection between terminals, a DMB receiver 118 for receiving a multimedia broadcast, and a decoder IC 120 for smooth video playback.

The storage device 114 includes at least one hard disk and a flash memory of a 2.5-inch type.

The terminal device 100 is a device with a built-in hard disk.

The key input unit 102 includes a power button located outside the terminal, and includes an input key input through the display unit 112 of a touch screen type.

The battery unit 104 supplies power to the entire system, and when the temperature sensor therein communicates with the charging circuit 106 and is at a high temperature (for example, 70 degrees), the voltage value measured by the temperature sensor becomes 218 mV. 106 recognizes this as a low (LOW) to turn off the charge of the battery (OFF).

In addition, in the case of -1 ℃, the voltage value measured by the temperature sensor is about 2.337V and less than or equal to 2.4V, this analog value is recognized through the ADC of the voltage management unit 108.

The power management unit 108 is a circuit for controlling the power supply, and supplies power in sequence to the power timing of the control unit 122 and other peripheral devices.

The controller 122 transfers information using a communication scheme such as an I2C interface.

When the system is turned on at a low temperature of -1 ° C or less, the power measured by the temperature sensor from the battery becomes 2.4V, and the power management unit 108 sends information to the control unit 122 at a low temperature of -1 ° or less. To pass.

The controller 122 may set a power level value of each of the power managers 108 through an I2C interface.

The controller 122, when the system starts to boot, when the system temperature is below zero, receives the low temperature of -1 ° C or less from the power management unit 108 through I2C. ), Peripheral devices including the display unit 112, the storage unit 114, the network unit 116, the DMB receiving unit 118, and the decoder IC 120 are turned on through a general purpose input / output pin (GPIO). ON) to control each device to generate heat.

At this time, the hard disk drive may be supplied with power to generate heat.

The charging circuit 106 stops charging the battery when the temperature of the battery rises through the sensor inside the battery while charging the battery to prevent the battery from being damaged.

Referring to FIG. 2, when power is applied (S200), the system starts booting (S202).

At this time, it is determined whether the temperature of the system is a temperature of -1 ℃ or less (S204).

Determining whether the temperature of the system is below -1 ° C detects that the current temperature is below -1 ° C through the battery temperature sensor and power management unit in the boot loader stage.

In this case, a menu is displayed on the display unit so that the user can select whether to warm up the system by supplying power to the peripheral device or to turn off the power without using the system (S206).

As a result of step 206, when a selection command for warming up the system is input from the user, the controller starts to supply power to the peripheral devices (S210).

When the peripherals start to power up, the IC itself dissipates heat, increasing the ambient temperature of the hard disk.

As a result of step 206, when a selection command for not warming up the system is input from the user, the power is turned off (S212).

If a warm-up stop command is input from the user during warm-up, the power is turned off (S210).

When the power is supplied to the peripheral devices and the temperature is 0 ° C. or higher, the system boots normally (S216).

When booting the system below a certain temperature, power is supplied to the peripheral devices in advance to make the temperature of the terminal or the hard disk drive above a certain temperature so that the system can be booted safely and smoothly.

So far, the present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be implemented. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

According to the present invention there is an effect that the normal booting at a stable temperature by supplying power to the peripheral device by detecting the temperature at the time of system booting of the terminal device in advance.

According to the present invention, since the temperature of the terminal device is booted at a predetermined temperature or more, there is an effect of extending the service life of the hard disk drive.

According to the present invention, by performing a normal boot at a predetermined temperature or more, there is an effect that can reduce the malfunction at the start of system operation.

According to the present invention, by enabling the temperature control of the system in the terminal itself, there is an effect that does not waste other unnecessary power.

Claims

A key input unit for receiving an input signal for power supply and shutdown command;

A battery unit configured to detect a temperature of a terminal when a power supply command signal is transmitted from the key input unit;

A power management unit determining whether the temperature measured by the battery unit is lower than or equal to a predetermined temperature;

And a control unit for controlling the power supply of the peripheral apparatuses using the temperature information received from the power management unit.

The method of claim 1,

The power management unit is a circuit that controls the power supply to the devices, the power control device in the terminal, characterized in that to supply the power of the devices in sequence until the terminal reaches a certain temperature.

The method of claim 1,

The control unit is a power control device in a terminal, characterized in that for controlling the power supply to the peripheral devices when the temperature measured by the temperature sensor is below a certain temperature.

The method of claim 3, wherein

The control unit supplies power to the peripheral devices, wherein the control unit controls the operation of the peripheral devices through the GPIO.

The method of claim 1,

The control unit is a power control device for a terminal characterized in that when the terminal starts to boot up to detect a certain temperature or less to display a selection list to supply the power to the peripheral device to increase the temperature.

The method of claim 1,

The control unit is a power control device for a terminal, characterized in that for controlling the boot to proceed normally if the temperature measured by the temperature sensor is above a certain temperature.

(a) determining whether the temperature is lower than a predetermined temperature when power is applied;

(b) displaying a selection list on whether to supply power to a peripheral device when the temperature is below a predetermined temperature as a result of the determination of step (a);

(c) starting to supply power to a peripheral device when a power supply command is input as a result of the determination of step (b);

(d) normally booting when the temperature is higher than a predetermined temperature.

The method of claim 7, wherein

When the power supply cancellation command is input as a result of the determination of the step (b), the power control method of the terminal further comprising the step of shutting off the power supply to the peripheral device.

The method of claim 7, wherein

After the step (c), the power supply control method of the terminal further comprising the step of shutting off the power supply when a command to stop the power supply to the peripheral device.

The method of claim 7, wherein

The step (a) is a power control method in a terminal characterized in that the temperature sensed by the temperature sensor in the battery is transmitted to the control unit through the power management unit.