KR100575717B1 - Lcd driving method for mobile communication terminal - Google Patents

Abstract

The present invention relates to a method of driving an LCD of a mobile communication terminal, and partially reduces the power consumption of the battery by partially driving the LCD screen according to the battery residual voltage. To this end, the present invention includes the steps of detecting the battery residual voltage at a predetermined main interval, and comparing the battery residual voltage with a reference voltage; Displaying the screen on the entire region of the LCD when the battery residual voltage is greater than the reference voltage as a result of the comparison; As a result of the comparison, if the battery residual voltage is less than the reference voltage, the LCD is enabled at predetermined pixel intervals to display the screen in a mosaic form.

Description

LCD DRIVING METHOD FOR MOBILE COMMUNICATION TERMINAL}

1 is a perspective view showing a general folder type mobile communication terminal folder is opened.

2 is a perspective view of a closed state of a folder in a typical clamshell mobile communication terminal;

Figure 3 is a block diagram showing the configuration of the LCD driving apparatus of the conventional mobile communication terminal.

4 is a flowchart illustrating a method of driving an LCD of the present invention.

FIG. 5 is a diagram showing a state in which the screen is displayed on the entire area of the CD in FIG. 4; FIG.

6 is a view showing a state in which the screen is displayed in the center of the LCD in FIG.

7 is a view showing a screen in a mosaic form in the LCD in Figure 4;

8 is a view showing a state in which the screen is displayed in the form of a scan in the LCD in FIG.

9 is a view showing a screen displayed in accordance with the menu in Figure 4;

10 is a view showing a state in which the upper or lower screen is an important display portion in Figure 4;

The present invention relates to a method of driving an LCD of a mobile communication terminal, and more particularly, to a method of driving an LCD of a mobile communication terminal to reduce the power consumption of the LCD to increase the use time of the mobile communication terminal.

FIG. 1 is a perspective view of a folder opened in a general folder type mobile communication terminal, and FIG. 2 is a perspective view of a folder of a general folder type mobile communication terminal closed.

The folder type mobile communication terminal illustrated in FIGS. 1 and 2 is connected to the main body 100, the folder 200, and the main body 100 and the folder 200 to open and close the folder (not shown). It is composed largely.

Therefore, the folder 200 is opened and closed by the rotational movement around the rotation axis of the connecting device in the main body 100.

The main body 100 is equipped with a keypad 120 including a number key, a power key, and a plurality of function keys, and a microphone 110 for inputting a user's voice is provided below the keypad 120.

And, inside the folder 200, as shown in Figure 1, the LCD 210 for displaying a plurality of data is mounted, the upper portion of the LCD 210 for outputting audio signals such as voice or voice messages of the other party A speaker 220 is provided.

Meanwhile, as illustrated in FIG. 2, another folder 230 is provided outside the folder 200 to display a plurality of pieces of information such as battery remaining amount, reception sensitivity, month day, day of the week, and time information.

In addition, the main body 100 and the folder 200 are each provided with a switching contact is further provided with a folder opening and closing detection unit 130 for detecting the opening and closing of the folder 200 according to the on / off of the switching contact.

With reference to the accompanying drawings for the LCD drive device of such a folder-type mobile communication terminal will be described.

3 is a schematic block diagram of an LCD driving apparatus of a folder type mobile communication terminal according to the prior art, and includes an RF processing unit 10, a sensing unit 11, a control unit 12, a key input unit 13, It consists of the 1st, 2nd drive part 14 and 15 and the 1st, 2nd display part 16 and 17. FIG.

The first display unit 16 is an LCD mounted inside the folder, and the second display unit 17 is an LCD mounted outside the folder.

The RF processor 10 demodulates an RF signal including a plurality of pieces of information (received electric field strength, current time, date, day of the week information, etc.) received through an antenna, and outputs the demodulated RF signal to the controller 12, and the controller 12. A plurality of transmission data received through the RF modulated to transmit through the antenna.

The detection unit 11 detects the opening and closing of a folder of the mobile communication terminal and provides a detection signal to the control unit 12, and the key input unit 13 provides a corresponding signal according to a user's key selection to the control unit 12, respectively. .

When the folder open / close detection signal output from the detector 11 is a folder open signal, the controller 12 controls the first display unit 16 driving control signal and the RF process to the first driver 14. A display control signal for displaying a large amount of information is provided.

Accordingly, the first driver 14 drives the first display unit according to a control signal provided from the controller 12, and displays the plurality of information, that is, the battery remaining amount, the received electric field strength, the current time, the month day, and the day of the week information. do.

In addition, when the folder is opened, the control unit 12 provides the second display unit 17 driving blocking control signal to the second driving unit 15 to cut off the power provided to the second display unit 17, that is, the second display unit. The power supplied to (17) is turned off.

On the other hand, when the folder open / close detection signal provided by the detection unit 11 is a folder close signal, the control unit 12 operates in the opposite manner to the case where the folder open / close detection signal is an open detection signal.

That is, when the folder is opened, the internal LCD 16 is turned off, and only the external LCD 17 is turned on to display state information and time information of the terminal.

As a result, the LCD driving apparatus of the folder-type mobile communication terminal according to the related art displays the state and time information of the terminal when the external LCD is turned off when the folder is opened, only the internal LCD is turned on, and the internal LCD is closed when the folder is closed. Is turned off and only the external LCD is turned on to display the status information and time information of the terminal.

However, in the related art, when the user does not use the terminal for a long time in a state in which the user closes the folder, since the external LCD is continuously supplied with power and driven, unnecessary battery consumption occurs.

In addition, in the case of the flip type mobile communication terminal, since power must always be supplied to the LCD, unnecessary battery consumption occurs due to the driving of the LCD.

The present invention has been made to solve the above problems, and the object of the present invention is to provide a method for driving an LCD of a mobile communication terminal to reduce the power consumption of the battery by partially driving the LCD screen according to the remaining battery voltage. have.

According to an aspect of the present invention, there is provided a mobile communication terminal, comprising: detecting a battery residual voltage at a predetermined main interval, and comparing the battery residual voltage with a reference voltage; Displaying the screen on the entire region of the LCD when the battery residual voltage is greater than the reference voltage as a result of the comparison; As a result of the comparison, when the battery residual voltage is less than the reference voltage, the LCD is enabled at predetermined pixel intervals to display the screen in a mosaic form.

Hereinafter, with reference to the accompanying drawings, the operation and effects of the LCD driving method of the mobile communication terminal according to the present invention will be described in detail.

First, the apparatus to which the LCD driving method of the present invention mobile communication terminal is applied is the same as that of FIG.

4 is a flowchart illustrating a method of driving an LCD of a mobile communication terminal according to an exemplary embodiment of the present invention. As shown in FIG. 4, the battery residual voltage is detected at a predetermined main interval, and the battery residual voltage is compared with a reference voltage. (SP1, SP2); Displaying the screen on the entire area of the LCD when the battery residual voltage is greater than the reference voltage (SP4); As a result of the comparison, when the battery residual voltage is less than the reference voltage, the power saving mode is selected by the user, and the display is performed on the partial region of the LCD (SP3). The operation of the present invention will be described. .

First, the battery residual voltage of the mobile communication terminal is detected and the battery residual voltage is compared with a preset reference voltage (SP1, SP2).

As a result of the comparison, when the battery residual voltage of the mobile communication terminal is larger than the preset reference voltage, a screen is displayed on the entire area of the LCD as shown in FIG. 5 (SP4).

If the battery residual voltage of the mobile communication terminal is smaller than the preset reference voltage, the power saving mode is selected by the user to display the screen in the partial region of the LCD (SP3). At this time, when the battery residual voltage is less than the reference voltage, an alarm signal for notifying the user of the battery low is generated.

Referring to the method of displaying the screen in the partial region of the above-described LCD in detail, first, as shown in Fig. 6, only a predetermined line in the center of the LCD is enabled and the remaining lines are disabled to display the screen only in the center of the LCD, or Fig. 7 Like this, the LCD is enabled at predetermined pixel intervals to display the screen in a mosaic form.

In addition, as shown in FIG. 8, the LCD is enabled at predetermined line intervals to display a screen in a scan mode, or as shown in FIG. 9, the selection menu area of the LCD is displayed, or only an important display portion of the LCD is enabled as shown in FIG. Display the screen.

On the other hand, when the user selects a power saving mode and displays a screen in the partial area of the LCD, if the mobile communication terminal is a dual LCD, only the sub LCD is enabled, and the main LCD is disabled so that only the sub LCD is displayed. .

In other words, the present invention minimizes the power consumption of the battery by partially driving the screen of the LCD in accordance with the remaining battery voltage.

The specific embodiments or examples made in the detailed description of the present invention are intended to clarify the technical contents of the present invention to the extent that they should not be construed as limited to these specific embodiments and should not be construed in consultation. Various changes can be made within the scope of.

As described in detail above, the present invention has the effect of reducing the power consumption of the battery by partially driving the LCD screen according to the remaining battery voltage.

Claims (7)

In the mobile communication terminal, Detecting the battery residual voltage at a predetermined main interval and comparing the detected battery residual voltage with a reference voltage; Displaying the screen on the entire region of the LCD when the battery residual voltage is greater than the reference voltage as a result of the comparison; And comparing the battery with a predetermined pixel interval if the battery residual voltage is less than the reference voltage, displaying the screen in a mosaic form. The method of claim 1, further comprising generating an alarm signal informing of a low battery when the battery residual voltage is less than a reference voltage. delete delete The method of claim 1, wherein displaying the screen in a mosaic form comprises: And a user selected to enable the LCD at predetermined line intervals and to display the screen in a scan form. The method of claim 1, wherein displaying the screen in a mosaic form comprises: The method of driving an LCD of a mobile communication terminal, which is selected by a user and enables the display to display a screen by enabling only a selection menu area and an important display portion of the LCD. The method of claim 1, wherein displaying the screen in a mosaic form comprises: In the case of dual LCD, the method of driving the LCD of the mobile communication terminal, characterized in that it is selected by the user to enable only the sub-CD, the main LCD is disabled.

Images