KR20070075658A - Apparatus and method for controlling a liquid crystal display in a mobile communication terminal - Google Patents

Abstract

An LCD(Liquid Crystal Display) screen control device of a mobile communication terminal and a method thereof are provided to control driving of an LCD screen or brightness thereof according to an event set by a user when a navigation function is serviced, thereby minimizing battery consumption caused by the driving of the LCD screen. A memory unit(14) stores map data and an application program for providing a navigation function. A user setup information storage(16) stores user setup information for controlling brightness and driving of an LCD screen(19) while the navigation function is executed. A main controller(17) controls the navigation function by using the map data and the application program, confirms the user setup information while the navigation function is executed, and outputs a control command for controlling the LCD screen(19) according to an event generated by the navigation function. An LCD screen driver(18) controls brightness and the driving of the screen by the LCD screen control command of the main controller(17).

Description

Apparatus and method for controlling LCD screen of mobile communication terminal {APPARATUS AND METHOD FOR CONTROLLING A LIQUID CRYSTAL DISPLAY IN A MOBILE COMMUNICATION TERMINAL}

1 is a block diagram showing the configuration of a liquid crystal display control device of a mobile communication terminal of the present invention.

Figure 2 is a flow chart showing the operation of the LCD screen control method of the present invention mobile communication terminal.

*** Description of the symbols for the main parts of the drawings ***

10 antenna 11: wireless transceiver

12: GPS antenna 13: GPS receiver

14: memory unit 15: key input unit

16: user setting information storage unit 17: main control unit

18: LCD screen driver 19: LCD screen

20: satellite

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal, and in particular, to a mobile communication terminal providing a navigation function through a telematics service, to provide a navigation function to a user, such as a navigation guidance voice, a speeding warning voice, and a map display. In this case, by controlling the driving of the LCD screen or adjusting the brightness according to the event set by the user, the battery charging due to the driving of the LCD screen is minimized while providing the navigation function for a long time. In addition, the present invention relates to an apparatus and method for controlling a liquid crystal screen of a mobile communication terminal which enables a user to receive a navigation service for a long time without worrying about running out of a battery.

In general, telematics is a wireless data service that provides information during the movement of a vehicle. Computers, wireless communication technology, global positioning system (GPS), and the Internet are embedded in transportation equipment such as vehicles, aviation, and ships. Is a wireless data service that can send and receive information by technology that changes text and voice signals.

In-vehicle telematics service combines mobile communication technology with location tracking technology to provide real-time vehicle accidents, theft detection, driving directions, traffic and life information, and games to drivers.

Recently, a telematics function has been added to a mobile communication terminal, and a navigation service in which a moving user receives directions through the shortest path, optimal route, and safe speed maintenance through a mobile communication terminal having map information and a GPS chip. Can be provided.

In this case, the user of the mobile communication terminal has the advantage that the navigation service can be provided not only in his vehicle but also in other vehicles, but the backlight of the LCD screen is turned on while receiving the directions through voice or display on the LCD screen. There is a disadvantage in that the battery consumption is increased, when the user does not have a vehicle charging kit, there is a problem that the battery is exhausted or unable to receive important call service before reaching the destination.

Accordingly, the present invention has been proposed to solve the above-mentioned conventional problems, and in a mobile communication terminal that provides a navigation function through a telematics service, a road guidance voice, a speed warning voice, An object of the present invention is to provide an apparatus and method for controlling the driving of the LCD screen or adjusting the brightness according to an event set by a user when providing a navigation function such as a map display.

According to an aspect of the present invention, there is provided a mobile communication terminal that provides a navigation function according to a telematics service, and includes a memory unit for storing an application program and a map data providing a navigation function. ; A user setting information storage unit for storing user setting information for controlling driving and brightness of the LCD screen during execution of a navigation function from a user input through a keypad; The navigation function is controlled using the navigation application program and the map data stored in the memory unit, and the user setting information of the user setting information storage unit is checked during execution of the navigation function, and according to an event generated by the navigation function. A main control unit for outputting a control command for controlling the LCD screen; It characterized in that it comprises a liquid crystal screen driver for controlling the driving and brightness of the liquid crystal screen according to the control screen control command of the main controller.

In addition, in a mobile communication terminal providing a navigation function according to a telematics service, receiving and storing user setting information for controlling driving and brightness of a liquid crystal display during execution of a navigation function from a user Wow; When the navigation function is activated, the main control unit determines whether a navigation related event occurs during the execution of the navigation function, and adjusts whether the LCD screen is driven and the brightness degree according to the stored user setting information.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of an LCD screen control apparatus of a mobile communication terminal according to the present invention. As shown in FIG. 1, an antenna is provided in a mobile communication terminal providing a navigation function according to a telematics service. A wireless transceiver 11 for processing a radio signal transmitted and received through 10; A GPS receiver 13 which receives coordinate signals from the satellites 20 through the GPS antenna 12 and provides position information; A memory unit 14 for storing an application program and a map data providing a navigation function; A key input unit 15 for receiving various key commands from a user; A user setting information storage unit (16) for storing user setting information inputted by the user through the key input unit (15) to control driving and brightness of the LCD screen during the execution of a navigation function; Based on the location information of the GPS receiver 13 and traffic information received through a mobile communication network, the navigation function is controlled using a navigation application program and map data stored in the memory unit 14, and the navigation function is controlled. A main control unit 17 for checking the user setting information of the user setting information storage unit 16 during the execution of the control unit, and outputting a control command for controlling the LCD screen 19 according to an event generated by the navigation function; A liquid crystal display driver 18 for controlling whether the liquid crystal display 19 is driven and brightness according to the liquid crystal display control command of the main controller 17; According to the control of the LCD screen driver 18, the LCD screen 19 is configured to display map data and various data.

In addition, the operation of the method of controlling the LCD screen of the mobile communication terminal of the present invention, as shown in Figure 2, in the mobile communication terminal to provide a navigation (navigation) function according to a telematics service (telematics service), the navigation from the user Receiving and storing user setting information for controlling driving and brightness of the LCD screen during execution of the gaming function (S20); When the navigation function is activated, the main control unit checks whether a navigation related event occurs during the execution of the navigation function, and adjusts whether the LCD screen is driven and the brightness degree according to the stored user setting information (S21 to S26). .

Through the above configuration, the present invention provides a navigation function, such as a road guidance voice, speeding warning voice, map display to the user in a mobile communication terminal that provides a navigation function through a telematics service (telematics service) By controlling the driving of the LCD screen or adjusting the brightness according to an event set by the user, the battery consumption due to the driving of the LCD screen is minimized while providing a navigation function for a long time, even when there is no vehicle charging kit. The user can be provided with the navigation service for a long time without worrying about running out of battery.

It is assumed that the mobile communication terminal of the present invention provides a navigation function through a telematics service, wherein the mobile communication terminal is, in addition to a general mobile communication terminal, a personal digital assistant (PDA), a notebook computer, a PMP. Means a portable communication device that provides a navigation function, such as (Portable Multimedia Player).

In FIG. 1, the wireless transmission / reception unit 11 processes a radio signal transmitted and received through the antenna 10 by modulation, demodulation, amplification, band conversion, and the like, and the GPS receiver 13 includes a GPS antenna 12. Receiving a coordinate signal from the satellite 20 through the to provide the location information to the main control unit 17, the memory unit 14 stores the application program and the map data to provide a navigation function.

The key input unit 15 receives various key commands from the user, and the user setting information storage unit 16 drives the LCD screen during the execution of the navigation function, which is input by the user through the key input unit 15. And user setting information for controlling brightness.

In addition, the main control unit 17 refers to a processor that is in charge of the overall control of the mobile communication terminal, such as voice communication, data communication, such as MSM (Mobile Station Modem) (BaseBand Analog processor), location information of the GPS receiver 13 And based on the traffic information received through the mobile communication network, and the like to control the provision of the navigation function to the user using the navigation application program and the map data stored in the memory unit 14, and during the execution of the navigation function. It checks the user setting information of the setting information storage unit 16, and outputs a control command for controlling the LCD screen 19 according to an event generated by the navigation function.

In addition, the LCD screen driver 18 adjusts whether the LCD screen 19 is driven or the brightness according to the LCD screen control command of the main controller 17, and the LCD screen 19 includes a liquid crystal display (LCD). The map data and various data are displayed under the control of the LCD screen driver 18.

Referring to Figure 2 attached to the operation of the present invention, before the navigation function using the mobile communication terminal by the user, the main control unit 17 from the user via the key input unit 15, the navigation function of the In response to an event generated by the navigation function during execution, user setting information for controlling driving and brightness of the LCD screen is received (S20).

Here, the user setting information is information for specifying a case in which it is determined that the user does not need to drive the LCD screen 19 or adjusts the brightness while receiving the road guidance according to the navigation function. In the event of a straight run, when there is no change of direction when entering the intersection, the backlight of the LCD screen 19 is always turned off or at predetermined time intervals for each event generated by the navigation function. This is a value set and stored by the user in such a manner as to be left in an off state or to leave a difference in brightness of the liquid crystal display 19, which is stored in the user setting information storage unit 16.

At this time, the main control unit 17, in order to receive the user setting information as described above, should provide a user interface for displaying a menu window for specifying the user setting information, a selection button for each event.

Then, when the navigation function is activated (S21), the main control unit 17 reads and executes the navigation application program stored in the memory unit 14, reads the map data, and then moves the position information provided by the GPS receiver 13 and moves. Each part is controlled to provide a navigation function for providing a road guidance voice, a speed warning voice, a map, etc. to a destination designated by the user according to traffic information received by the wireless transmission / reception unit 11 through a communication network.

At this time, the main control unit 17 checks whether a navigation related event occurs during the execution of the navigation function (S22), and when a navigation related event such as a road guidance voice output, a speed warning voice, and a map display occurs, the user setting information storage unit By extracting the user setting information stored in (16) (S23), by outputting a control command for controlling the LCD screen 19 to the LCD screen driver (18) (S24), the main screen in the LCD screen driver 18 In accordance with the liquid crystal display control command of the unit 17, the driving and brightness of the liquid crystal display 19 are adjusted (S25).

Here, when executing the navigation function with reference to the user setting information in step S22, when an event not related to the navigation function occurs, such as a call connection request or a user's key input, the main control unit 17 is typically The LCD screen 19 is adjusted to the brightness of the LCD screen 19 set in the standby state (S26).

Therefore, a user who uses the navigation function typically relies on voice guidance such as a change of direction and a speed warning, rather than looking at the liquid crystal display 19 of the mobile communication terminal. Since the LCD screen 19 is hardly seen, the driving and the brightness of the LCD screen 19 are adjusted according to the present invention, thereby reducing battery consumption due to the driving of the LCD screen 19.

As described above, the present invention is a mobile communication terminal that provides a navigation function through a telematics service, when providing a navigation function such as a voice prompt, speed warning voice, map display to the user By controlling the driving of the LCD screen or adjusting the brightness according to an event set by the user, the battery consumption due to the driving of the LCD screen is minimized while providing a navigation function for a long time, even when there is no vehicle charging kit. There is an effect that the user can be provided with the navigation service for a long time without worrying about running out of battery.

Claims (7)

A mobile communication terminal providing a navigation function according to a telematics service, comprising: a memory unit for storing an application program and a map data providing a navigation function; A user setting information storage unit for storing user setting information for controlling driving and brightness of the LCD screen during execution of a navigation function from a user input through a keypad; The navigation function is controlled using the navigation application program and the map data stored in the memory unit, and the user setting information of the user setting information storage unit is checked during execution of the navigation function, and according to an event generated by the navigation function. A main control unit for outputting a control command for controlling the LCD screen; And a liquid crystal screen driver for controlling whether the LCD screen is driven and brightness according to the LCD screen control command of the main controller. The apparatus of claim 1, wherein the main control unit is configured to display user setting information indicating that the user does not need to drive the LCD screen for each event generated by the navigation function or adjusts the brightness while the user receives the directions according to the navigation function. And a user interface for displaying a menu window and a selection button for designation of user setting information. A mobile communication terminal providing a navigation function according to a telematics service, the mobile communication terminal comprising: receiving and storing user setting information for controlling driving and brightness of a liquid crystal display during execution of a navigation function from a user; When the navigation function is activated, the main control unit checks whether a navigation related event occurs during execution of the navigation function, and adjusts whether the LCD screen is driven and the brightness degree according to the stored user setting information. LCD screen control method of communication terminal. The method of claim 3, wherein the user setting information is information in which a user specifies whether the LCD screen is driven and the degree of brightness thereof according to an event generated by the navigation function. The method of claim 4, wherein the event generated by the navigation function is a road guidance voice output, a speed warning voice, and a map display event. The method of claim 3, further comprising: extracting user setting information stored in a user setting information storage unit from a main control unit when a navigation related event occurs during execution of the navigation function; And outputting a control command for controlling the LCD screen to the LCD screen driver according to the user setting information, and controlling whether the LCD screen is driven and the degree of brightness. . 4. The mobile communication method of claim 3, further comprising: adjusting, by the main controller, the LCD screen to a brightness value which is normally set in a standby state when no navigation related event occurs during execution of the navigation function. LCD screen control method of the terminal.

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