KR20030034353A - Apparatus and method for saving a power using a LID switch - Google Patents

Abstract

PURPOSE: An electric power reducing system and method is provided to install an LID(Leadless Inverted Device) switch at a lower part of an LCD panel, e.g. of a notebook computer for outputting the on or off signal according as the LCD panel is rotationally open or close. CONSTITUTION: The system comprises an LID switch(20), a keyboard controller(21), and a power management module(22). The LID switch(20) outputs the on or off signal according as it makes an electric or mechanical contact with an LCD panel or is detached from an LCD panel when an LCD panel rotationally gets open or close. The output on or off signal is input into the keyboard controller(21). The keyboard controller(21) controls the power management module(22) in a case that a notebook system power button or a bluetooth module power button is turned on or off. Also the keyboard controller(21) controls the operation of the power management module(22) according to the on or off signal of the LID switch(20). So if the LCD panel is rotationally closed, other notebook components(23, 24, 25, 26) are put into a power save mode.

Description

Power saving device and method using reed switch {Apparatus and method for saving a power using a LID switch}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power saving device and method using a reed switch. More particularly, the present invention relates to a lower power storage device and a method of installing a closed liquid crystal panel such as a notebook computer. The present invention relates to a power saving device and a method using a lead (LID) switch for outputting an off signal.

1 illustrates a configuration of a power saving device using a general reed switch. For example, the reed switch 10 provided in the lower portion of a liquid crystal panel of a notebook computer may be used when the liquid crystal panel is rotated open or closed. , And outputs a corresponding Reed Switch On / Off signal (LID SW_On / Off).

Meanwhile, the reed switch on / off signal is applied to the backlight module 13 of the liquid crystal panel as shown in FIG. 1, and the reed switch on / off is applied to the backlight module 13 of the liquid crystal panel. When the liquid crystal panel is rotated open, for example, the backlight of the liquid crystal panel is supplied with power in accordance with the reed switch off signal (LID SW_Off) output from the reed switch 10, thereby providing a backlight having normal brightness. Allow the light to emit light.

On the other hand, when the liquid crystal panel is rotated close, the backlight module 13 of the liquid crystal panel, the power applied to the backlight of the liquid crystal panel according to the reed switch on (LID SW_On) signal output from the reed switch This prevents unnecessary power consumption in the state where the liquid crystal panel is closed.

Therefore, when the user who is using the notebook computer rotates or closes the liquid crystal panel while the system power is turned on as it is, in the backlight module 13, mechanical contact with the liquid crystal panel or In response to an electrical contact, a power saving operation for selectively shutting off or supplying power to the backlight of the liquid crystal panel is automatically performed corresponding to the reed switch on / off signal output from the reed switch 10.

However, even when the liquid crystal panel is closed as described above, the liquid crystal panel is rotated in another configuration means provided in the notebook computer, for example, a Bluetooth module for short-range wireless communication, a central processing unit, and a hard disk. Since the same power is continuously supplied as when it is opened, there is a problem that unnecessary power is continuously consumed even when the notebook computer is not used for a long time.

Therefore, the present invention was created to solve the above problems, and the backlight of the liquid crystal panel using a reed switch that outputs an on / off signal according to a state in which a liquid crystal panel such as a notebook computer is rotated open or closed. In addition to selectively supplying or interrupting power, the power-saving operation for components such as a Bluetooth module included in a notebook computer, etc., in a closed state of the liquid crystal panel can be simultaneously performed according to a user's selection, thereby enabling more efficient power-saving operation. It is an object of the present invention to provide a power saving device and method using a reed switch to perform this.

1 schematically illustrates a configuration of a general notebook computer,

2 illustrates a configuration of a notebook computer to which a power saving device using a reed switch according to the present invention is applied.

3 is a flowchart illustrating an operation of a power saving method using a reed switch according to the present invention.

※ Explanation of code for main part of drawing

10,20: reed switch 11,21: keyboard controller

12,22: power management unit 13,23: backlight module

14,24: Bluetooth communication module 15,25: central processing unit

16,26: hard disk

A power saving device using a reed switch according to the present invention for achieving the above object, the display means is in close contact with the computer main body or rotated to be opened by a rotation operation; Detecting means for detecting an open / close of the display means and outputting an on / off signal corresponding thereto; And control means for selectively blocking power applied to the display means according to the output on / off signal, and selectively shutting off power applied to another configuration means provided in the computer main body. Characterized in that configured,

In addition, the power saving method using the reed switch according to the present invention, when the display means close to the computer main body by the rotation operation, the first step of shutting off the power applied to the display means; Checking a predetermined type of power saving mode when a predetermined time elapses with the display means being in close contact; And three steps of selectively performing a power saving operation for another configuration means provided in the computer main body, according to the identified type of power saving mode.

Hereinafter, exemplary embodiments of a power saving device and method using a reed switch according to the present invention will be described in detail with reference to the accompanying drawings.

2 shows a configuration of a power saving device using a reed switch according to the present invention. For example, the reed switch 20 provided in the lower part of a liquid crystal panel of a notebook computer may be rotated and opened. Alternatively, when closed, the reed switch on / off signal may be generated and output by mechanical contact or electrical contact with the liquid crystal panel, wherein the reed switch on / off signal is shown in FIG. 2. As shown in the drawing, input is performed to the keyboard controller 21 included in the notebook computer.

Meanwhile, when the system power button or the Bluetooth module power button of the notebook computer is turned on / off, the keyboard controller 21 controls the power management unit 22 included in the notebook computer, and the reed switch. According to the on / off signal outputted from 20, the power management unit 22 is controlled to operate.

For example, in the keyboard controller 21, when the liquid crystal panel of the notebook computer is rotated closed and a reed switch on signal (LID SW_On) is received from the reed switch 20, the power management unit 22 is turned on. The operation control prevents unnecessary power consumption of the backlight of the liquid crystal panel and cuts off power applied to any other constituent means designated by the user, for example, the Bluetooth module 24. In a state where the liquid crystal panel of the computer is closed, unnecessary power consumption can be prevented more efficiently.

In the keyboard controller 11, when a reed switch on signal (LID SW_On) is received from the reed switch 10, a normal power save for the entire system is set by the user. After confirming the operation, the power management unit 12 is operated to automatically switch the operation state of each constituent means such as the central processing unit and the hard disk to the power saving mode.

On the other hand, when the liquid crystal panel of the notebook computer is rotationally closed as described above, a user power save mode for performing a power saving operation for a specific configuration means arbitrarily designated by the user, and a power saving operation for the entire system. The normal power saving mode is automatically performed when a predetermined time elapses after the liquid crystal panel is closed. The operation will be described in detail as follows.

3 is a flowchart illustrating an operation of a power saving method using a reed switch according to the present invention. For example, when a user who is using a notebook computer turns on system power, In the case of rotating closing the liquid crystal panel, the reed switch 20 provided at the lower side of the liquid crystal panel outputs the reed switch on (LID SW_On) signal to the keyboard controller 21 by mechanical or electrical contact. .

Accordingly, the keyboard controller 21 detects that the liquid crystal panel has been rotated closed by the main body of the notebook computer based on the reed switch-on signal (S10), and controls the power management unit 22 to operate. .

That is, the power manager 22 cuts off the power applied to the backlight module 23 of the liquid crystal panel (S11), thereby preventing the backlight from emitting light in a state of being closed by the liquid crystal panel. In the keyboard controller 21, when a predetermined time, for example, 60 seconds elapses after the liquid crystal panel is rotated closed as described above (S12), it is checked whether the user has previously selected the power saving mode. (S13).

If the power saving mode is set as a result of the check, the power saving mode is a normal power save mode for performing a climax operation for the entire system, or a specific configuration means arbitrarily designated by the user. It identifies whether it is a user power save mode that performs a power saving operation.

On the other hand, when the power saving mode corresponds to the user power saving mode (S14), the keyboard controller 21 controls the power management unit 22 to operate, and to specify specific configuration means designated by a user, for example, a Bluetooth module ( By turning off the power applied to 24 (S15), in a state where a predetermined time has elapsed since the liquid crystal panel is closed, unnecessary power is prevented from being consumed by the Bluetooth module.

When the power saving mode corresponds to the normal power saving mode, the keyboard controller 21 controls the power management unit 22 to operate the Bluetooth module 24 as well as the central processing unit 25 and the power saving mode. By entering the normal power saving mode for variably controlling the supply power applied to the hard disk 16 or the like (S16), the power consumption is minimized.

On the other hand, by turning off the backlight power of the liquid crystal panel through the above process, when the user rotates and opens the liquid crystal panel in a state where the user power saving mode or the normal power saving mode is set, In the reed switch 20 provided in the lower part, the reed switch off (LID SW_Off) signal is output to the said keyboard controller 21 by mechanical or electrical contact.

Accordingly, the keyboard controller 21 detects that the liquid crystal panel has been rotated open from the main body of the notebook computer on the basis of the reed switch off signal (S17), and controls the power management unit 22 to operate. .

In addition, the power management unit 22 applies the power that has been turned off to the backlight module 23 of the liquid crystal panel again, releases the user power saving mode or the normal power saving mode (S18). The power required for each component is normally reapplied so that it is restored to the operating state before it was closed.

The above-described preferred embodiment of the present invention has been disclosed for the purpose of illustration, and the reed switch may be used as a switch of another shape, and the keyboard controller may have a control function in a notebook computer or the like. The notebook computer may also be replaced by another portable computer device in which display means such as a liquid crystal panel is rotated open / closed from the main body, and the present invention disclosed in the appended claims. Within the spirit and scope of the present invention, various other embodiments may be improved, changed, replaced or added.

The power saving device and method using the reed switch according to the present invention constructed and configured as described above are installed at the lower side of a liquid crystal panel such as a notebook computer, and output a corresponding on / off signal when the liquid crystal panel is rotated open or closed. By using the reed switch to selectively supply or cut off the backlight power of the liquid crystal panel, the power saving operation for the constituent means such as the Bluetooth module included in the notebook computer or the like in the state in which the liquid crystal panel is closed, In parallel with each other, it is a very useful invention that more efficient power saving operation can be performed in a portable computer device such as a notebook computer using a limited capacity battery power,

Claims (8)

Display means which are closed by the rotation operation, close to the computer main body, or are opened to be spaced apart from each other; Detecting means for detecting an open / close of the display means and outputting an on / off signal corresponding thereto; And And control means for selectively blocking power applied to the display means in accordance with the output on / off signal, and selectively shutting off power applied to another configuration means provided in the computer main body. Power saving device using a reed switch, characterized in that. The method of claim 1, The control means, when the display means is elapsed for a predetermined time in a state close to the computer main body, checks the type of the power saving mode is set in advance, so that the power saving operation corresponding to the type is automatically performed. Power saving device using a reed switch. The method of claim 2, The control means, according to the type of the power saving mode, of the plurality of configuration means provided in the computer main body, the power switch operation to selectively perform a power saving operation for a specific configuration means arbitrarily designated by the user Power saving device used. A step of turning off power applied to the display means when the display means is close to the computer body by the rotation operation; Checking a predetermined type of power saving mode when a predetermined time elapses with the display means being in close contact; And And a three step of selectively performing a power saving operation for another configuration means provided in the computer main body according to the identified type of power saving mode. The method of claim 4, wherein The type of power saving mode includes a user power saving mode for allowing a power saving operation to be performed only for specific configuration means arbitrarily designated by a user among a plurality of other configuration means provided in the computer main body, and a power saving operation for the entire computer. Power saving method using a reed switch, characterized in that the normal power saving mode to be included. The method of claim 5, In the third step, when the identified type of the power saving mode is the user power saving mode, the power saving method using the reed switch, characterized in that to cut off the power applied to a predetermined specific configuration means. The method of claim 4, wherein After the step 3, when the display means is opened from the computer main body, the power is applied to the display means, and the power saving operation is automatically released so that the display means is in an operation state before the display means is closely closed. Power saving method using a reed switch, characterized in that further comprising the step of. The method according to claim 1 or 4, The configuration means is a power saving method using a reed switch, characterized in that the Bluetooth (Blue Tooth) module for short-range wireless communication.