KR20060127460A - Mobile communication terminal having a display control function and a display control method using the same - Google Patents

Abstract

The present invention relates to a mobile communication terminal having a display control function and a display control method using the same. The present invention provides a display control method of a mobile communication terminal, comprising: (1) determining a display mode of a terminal screen according to whether a voice signal is detected during a call; and (2) a terminal screen according to whether a voice signal is detected during a call. A control unit for outputting a display mode control signal; And it provides a mobile communication terminal having a display control function comprising a display unit controlled in accordance with the control signal.

Therefore, according to the present invention, it is possible to provide various information necessary for the user through the screen of the terminal by keeping the screen illumination to a minimum according to whether a voice signal is detected during a call, and thus reduce the power consumption of the terminal.

Description

Mobile communication terminal with display control function and display control method using the same {Mobile Communication Terminal with Controlling Display and Method of Controlling Display Using Same}

1 is a diagram illustrating an example of a change process and power consumption of a display mode of a terminal according to the related art.

2 is a flowchart of a display control method of a mobile communication terminal according to a preferred embodiment of the present invention.

3 is a flowchart illustrating a display mode determination process according to a preferred embodiment of the present invention.

4 is a block diagram showing the configuration of a mobile communication terminal having a display control function according to a preferred embodiment of the present invention.

5 is a view showing the level of the audio signal over time in the microphone path or the ear path.

The present invention relates to a mobile communication terminal, and more particularly, a mobile communication terminal having a display control function capable of reducing power consumption while providing various information to a user through a screen of a mobile communication terminal during a call and a display control method using the same. It is about.

At present, the mobile communication terminal has evolved into a complex terminal capable of implementing various functions such as digital multimedia broadcasting (DMB), MP3, and games beyond simple communication means. The display function of the terminal is an important factor in implementing these various functions. In other words, consumers are increasingly demanding color reproduction of LCDs in a terminal having various functions, and accordingly, the use of QVGA-class LCDs is rapidly increasing.

1 is a diagram illustrating an example of a process of changing a display mode and a current consumption of a terminal according to the related art.

Referring to FIG. 1, a process of changing a display mode according to the related art and an example of the current consumption according to the related art are as follows.

According to the related art, the user may set the display mode of the terminal through the screen lighting menu. That is, the screen lighting can be turned on continuously, the dimming mode in which the screen light becomes dark when a certain time passes while the terminal is in use, and the off mode in which the screen light turns off when more time elapses. Can be set.

The current consumption when the LCD is not powered is about 40mA [S100]. After that, when power is supplied to the LCD by receiving a command signal from the user, the current consumption increases to about 250 mA [S110].

When a user connects a call and talks, a current of about 470 mA is consumed [S130], and after a predetermined time, the user enters a dimming mode to reduce the current consumption to about 360 mA [S140]. After a while during the call, the LCD will be powered off and switched off, reducing current consumption. However, in this case, since the call continues, the current consumption is maintained at about 280 mA [S150].

When a user watches a broadcast with a mobile communication terminal (eg, a DMB phone) capable of receiving a broadcast, a current of about 650 mA is consumed. If the LCD is turned off after a predetermined time while the broadcast is still being received, about 540 mA of current is consumed [S160].

On the other hand, in the case of the FS type LCD, a lot of current consumption is required, and there is no function to turn off the back light of the LCD because it does not use the back light like the existing LCD. Thus, conventionally, when a call is in progress or the terminal is not used for a certain time, a function of reducing power consumption by implementing a dimming mode on the LCD and then turning off the LCD has been implemented. If the LCD is always on by supplying a constant power without using such a function, there is a problem in that the power loss becomes very large. In addition, when the LCD is off, the user should turn on the LCD by using a key provided in the terminal in order to check necessary information such as usage time during a call. At this time, there is a problem that the sound of pressing the key is transmitted to the other party, which may act as unnecessary noise.

The present invention is to solve the above problems, the present invention provides a mobile communication terminal having a display control function that can control the screen illumination of the display according to whether or not a voice signal is detected during a call and a display control method using the same. Its purpose is to.

Another object of the present invention is to provide a mobile communication terminal having a display control function and a display control method using the same, which can provide various information to a user without turning on the display by pressing a key of the terminal during a call. .

As an aspect of the present invention for achieving the above object, the display control method of the mobile communication terminal according to the present invention is characterized in that the display mode of the terminal screen is determined according to whether or not a voice signal is detected during a call.

In another aspect of the present invention, a display control method of a mobile communication terminal, the method comprising: detecting a voice signal in a mobile communication terminal connected to a call; Determining a display mode of the terminal screen according to the detection; And displaying the terminal screen according to the determined display mode.

As another aspect of the present invention, a control unit for outputting a display mode control signal of the terminal screen according to whether or not a voice signal during a call according to the present invention; And a display unit controlled according to the control signal.

Preferably, the display mode is determined to be an off mode if a voice signal is not detected for a predetermined time and a dimming mode if a voice signal is detected.

The terms used in the present invention are described as follows.

(1) A mobile communication terminal is a personal communication device (PCS), a personal digital terminal (PDA), a smart phone, a next generation mobile communication terminal (IMT-2000), a DMB phone, a wireless LAN terminal, etc. Say this is possible terminal.

(2) The display mode indicates an illumination state of a screen such as an on mode, a dimming mode, and an off mode, and refers to a power state supplied to a terminal screen such as an LCD. The on mode is the state where the power is maximized, and the terminal user can see the screen most clearly. In addition, the dimming mode is a step of supplying only a constant power level below the maximum power level, and refers to a dark state to the terminal user. The off mode is a state in which the power supply is cut off, and the terminal screen is not visible to the user.

The above objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like numbers refer to like elements throughout. In addition, when it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a flowchart of a display control method of a mobile communication terminal according to a preferred embodiment of the present invention.

3 is a flowchart illustrating a display mode determination process according to a preferred embodiment of the present invention.

4 is a block diagram showing the configuration of a mobile communication terminal having a display control function according to a preferred embodiment of the present invention.

2 to 4, a preferred embodiment of a mobile communication terminal having a display control function and a display control method using the same according to the present invention will be described.

The mobile communication terminal according to an exemplary embodiment of the present invention includes a wireless communication unit 400, a control unit 410, a microphone 420, a speaker 430, and a display unit 460. The wireless communication unit 400 is a device capable of transmitting and receiving data through a mobile communication network.

First, the controller 410 detects a voice signal during a call [S200]. Here, the voice signal may pass through the microphone (MIC) path 440 or pass through the EAR path 450. The voice signal of the terminal user is input from the microphone 420, passes through the microphone path 440, and then is transmitted to the outside through the wireless communication unit 400. In addition, the voice signal of the other party in a call state with the user of the terminal is received from the mobile communication network through the wireless communication unit 400, and then outputs through the ear path 450 to the speaker 430.

Thereafter, the controller 410 determines the display mode according to whether the voice signal during the call is detected [S210]. Here, the process of determining the display mode will be described.

It is determined whether a voice signal is detected in the microphone path 440 or the ear path 450 [S300]. If a voice signal is detected, it is determined whether the detected voice signal is equal to or greater than a predetermined signal strength [S310]. If the detected voice signal is equal to or greater than the set signal strength, the display mode is determined as a dimming mode [S320]. If the detected voice signal is less than the set signal strength, the process returns to step S300 to determine whether the voice signal is detected. As described above, the dimming mode is determined only when the detected voice signal is equal to or greater than the set signal strength, in order to exclude a case where other voice signals such as ambient noise are detected instead of the speaker's voice signal. As a reference for selectively detecting only the speaker's voice signal, a frequency band or the like may be set in addition to the signal strength. Here, the set signal strength may be set in advance or set by a user of the terminal.

If the voice signal is not detected, it is determined whether the voice signal non-detection state has elapsed a predetermined time [S330]. If the set time has elapsed, the display mode is determined to be an off mode [S340]. . If the set time has not elapsed, the process returns to step S300 to determine whether a voice signal is detected. In this case, the set time may be preset in advance or set by a user of the terminal.

After the display mode is determined, the controller 410 outputs a display mode control signal according to the determined display mode to be displayed on the display unit 460 [S220].

5 is a view showing the level of the audio signal over time in the microphone path or the ear path.

Referring to FIG. 5, a preferred embodiment of a display mode controlled according to the present invention will be described below. Here, only the microphone path is assumed.

A region 500 and B region 510 indicate a state in which a voice signal passes through the microphone path 440. In addition, the C region 520 and the D region 530 represent a state in which a voice signal does not pass through the microphone path 440.

A voice signal is detected in the area A 500, but the signal strength of the detected voice signal is recognized as noise as less than a predetermined set strength. Thus, the display mode is maintained in the off mode without changing to the dimming mode. In the region B 510, the detected voice signal is recognized as the voice of the terminal user as the predetermined intensity or more. Therefore, the display mode is determined as the dimming mode, so that the terminal user can receive various information such as the other party, the talk time, and the current time on the screen.

The voice signal of the user is not detected in the C region 520, but the undetected time of the voice signal is too short as less than a predetermined set time. Therefore, the display mode does not change to the off mode and maintains the dimming mode. In the D region 530, the display mode is determined to be an off mode because the undetected time of the audio signal is sufficiently long as more than a predetermined set time. Therefore, the display is turned off in the area D to prevent power loss.

Subsequently, the display mode is determined through the same process as above, and the state of the display is controlled accordingly.

In addition, when a user of a folder type terminal calls using an ear jack, the display may be controlled through the display mode control method according to the present invention only when the folder is open.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

Referring to the effects of a mobile communication terminal having a display control function and a display control method using the same according to the present invention described above are as follows.

First, according to the present invention, since the display can be kept to a minimum by controlling the display according to whether a voice signal is detected during a call, power consumption can be reduced.

Second, according to the present invention, since screen illumination is controlled according to whether a voice signal is detected during a call, various information such as talk time in a state of minimal power consumption without the user pressing a key of the terminal during a call and turning on the display. Can be provided.

Claims (16)

The display control method of the mobile communication terminal, characterized in that for determining the display mode of the terminal screen according to whether or not the voice signal during the call. The method of claim 1, wherein the display mode, If the audio signal is not detected for a predetermined time period is determined in the off (Off) mode, if the audio signal is detected in the dimming (Dimming) mode of the display control method of the mobile terminal. The method of claim 1 or 2, wherein the audio signal, Display control method of a mobile communication terminal, characterized in that passing through the microphone (MIC) path. The method of claim 1 or 2, wherein the audio signal, The display control method of the mobile communication terminal, characterized in that passing through the (EAR) path. In a mobile terminal connected to a call (Call), Detecting a voice signal; Determining a display mode of the terminal screen according to the detection; And Displaying a terminal screen according to the determined display mode; Display control method of a mobile communication terminal comprising a. The method of claim 5, wherein the determining of the display mode comprises: If the voice signal is not detected for a predetermined time period is determined in the Off mode, and if the voice signal is detected in the dimming mode display control method of a mobile communication terminal. The method of claim 5 or 6, wherein the audio signal, Display control method of a mobile communication terminal, characterized in that passing through the microphone (MIC) path. The method of claim 5 or 6, wherein the audio signal, The display control method of the mobile communication terminal, characterized in that passing through the (EAR) path. The method of claim 5 or 6, wherein the detected audio signal, Display control method of a mobile communication terminal, characterized in that more than a predetermined predetermined signal strength. The method of claim 6, wherein the predetermined time, Display control method of a mobile communication terminal, characterized in that settable by the user of the terminal. A controller for outputting a display mode control signal of a terminal screen according to whether a voice signal is detected during a call; And A display unit controlled according to the control signal A mobile communication terminal having a display control function. The method of claim 11, wherein the display mode, A mobile communication terminal having a display control function, characterized in that it is determined to be an off mode if a voice signal is not detected for a predetermined time, and to a dimming mode if a voice signal is detected. The method of claim 11 or 12, wherein the audio signal, A mobile communication terminal having a display control function, characterized by passing through a microphone (MIC) path. The method of claim 11 or 12, wherein the audio signal, A mobile communication terminal having a display control function, characterized by passing through an EAR path. The method of claim 11 or 12, wherein the detected audio signal, Display control method of a mobile communication terminal, characterized in that more than a predetermined predetermined signal strength. The method of claim 12, wherein the predetermined time, Display control method of a mobile communication terminal, characterized in that settable by the user of the terminal.

Images