KR20100074765A - A mobile telecommunication device and a display control method - Google Patents

Abstract

PURPOSE: A mobile communication terminal and a display control method using the same are provided to control text and backgrounds according to a user's setup. CONSTITUTION: A display unit(151) includes electronic paper. Through the control of a controller(180), the color of text and a background to be displayed through the display unit is changed to improve clarity. A memory(160) stores the complementary color information of the text and background and the setup information of a user. The controller controls the color of the text and background to be displayed according to the information stored in the memory.

Description

Mobile communication terminal and display control method using same {A mobile telecommunication device and a display control method}

The present invention relates to a mobile communication terminal having an electronic paper and a display control method using the same.

In general, the terminal refers to a device having at least one voice / video call function, information input / output function, and data storage function. Terminal can move It may be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal depending on whether or not. The mobile terminal may be further classified into a handheld terminal and a vehicle mount terminal according to whether a user can directly carry it.

Recently, in addition to the above-described functions, the terminal can perform various functions such as shooting a still image or a video, playing a multimedia file such as a music file or a video file, playing a game, receiving / outputting a broadcast, and a road guidance service. As a result, it is being implemented in the form of a comprehensive multimedia player.

Many new attempts are being applied to these multimedia devices in terms of hardware or software to implement complex functions. For example, in order to allow a user to search for or select a function easily and conveniently, a user interface (UI) environment implemented in various forms is provided.

Today, the development of e-paper technology has the advantage of being able to bend as a flexible display, due to the need to transform it into a method of information transfer and sharing that corresponds to an information society that requires a new paradigm. And is entering the commercial development stage.

Electronic paper is much cheaper to produce than conventional flat panel display panels. Like liquid crystal display devices, electronic paper does not require backlighting or continuous recharging, so it can be driven with very little energy. In addition, electronic paper has a wide viewing angle and a memory function that does not completely disappear even in the absence of power.

These great advantages make it possible for electronic paper to be used in a wide range of applications, such as e-books with paper-like sides and moving illustrations, self-renewable newspapers, reusable paper displays for mobile phones, disposable TV screens and electronic wallpaper. It has a huge potential market.

An object of the present invention is to provide a mobile communication terminal including an electronic paper with improved visibility and a display control method using the same.

Another object of the present invention is to provide a mobile communication terminal capable of changing the complementary color according to a user's setting and a display control method using the same.

The mobile communication terminal according to the present invention for achieving the above object is characterized in that the text and background output on the electronic paper to change the complementary color with high clarity and output.

The mobile communication terminal according to the present invention is characterized by changing the color of the text and the background output on the electronic paper to complementary colors according to the user's setting.

Features of a detailed configuration of a mobile communication terminal according to the present invention includes a display unit including an e-paper; It includes a control unit for controlling to change the color of the text and the background to be displayed through the display to a color with a high clarity.

Other detailed configuration features of the mobile communication terminal according to the present invention further includes a memory storing text and background complementary information to be displayed through the display unit and setting information of the user. This is to control the color of the text and background to be displayed.

Another detailed configuration feature of the mobile communication terminal according to the present invention further includes an optical sensor for detecting an amount of ambient light and transmitting a detection result to the controller, wherein the controller is to be displayed according to the information provided from the optical sensor. This is to control the color of the text and the background.

A display control method using a mobile communication terminal according to the present invention is a method of controlling the color of data displayed on an electronic paper in a mobile communication terminal including an electronic paper on a display unit, the text being displayed on the electronic paper and a background. Temporarily storing color information; Calculating complementary color information of the text and the background; And controlling to display the text and the background on the electronic paper according to the calculated information.

According to another aspect of the present invention, there is provided a display control method using a mobile communication terminal. The mobile communication terminal further includes a memory storing information of complementary text and background to be displayed through a display unit, and setting information of a user. The method may further include controlling the color of the text and the background to be displayed according to the detailed description.

Another detailed feature of the display control method using the mobile communication terminal according to the present invention comprises the steps of: sensing the amount of light around the mobile communication terminal; The method may further include controlling the color of the text and the background to be displayed on the electronic paper according to the light quantity detection result.

Effects of the mobile communication terminal and the display control method using the same according to the present invention can be expected.

1. It can improve the visibility in electronic paper without backlight.

2. Text and background displayed on the electronic paper can be controlled according to the user's setting.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Detailed descriptions thereof will be omitted for those known technologies that may deteriorate the gist of the present invention.

The terminal described herein includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), navigation, Digital cameras, MP3P (MPEG layer 3 Player) and the like. Of course, the terminal to which the present invention is applicable is not limited to the above-described type, and it is natural that one terminal can be included.

Referring to FIG. 1, a terminal related to the present invention will be described in terms of components according to functions. 1 is a block diagram of a terminal related to an embodiment of the present invention.

The terminal 100 illustrated in FIG. 1 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, and a memory 160. ), An interface unit 170, a controller 180, a power supply unit 190, and the like. 1 illustrates a terminal having various components. However, not all illustrated components are essential components. The terminal may be implemented by more components than the illustrated components, or the terminal may be implemented by fewer components.

Hereinafter, the components constituting the terminal 100 illustrated in FIG. 1 will be described.

The wireless communication unit 110 may include one or more components for performing wireless communication between the terminal 100 and a wireless communication system or wireless communication between the terminal 100 and a network in which the terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

Here, the broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a pre-generated broadcast signal and / or broadcast related information and transmits the same to a terminal. In addition, broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. In addition, the broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

Meanwhile, broadcast related information may also be provided through a mobile communication network, and in this case, may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems, and in particular, digital multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), and media forward link only (MediaFLO). The digital broadcast signal may be received using a digital broadcasting system such as Digital Video Broadcast-Handheld (DVB-H) or Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 is configured to be suitable for all broadcast systems providing broadcast signals as well as the digital broadcast system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

In addition, the mobile communication module 112 transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access and may be built in or external to the terminal 100.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

In addition, the location information module 115 is a module for checking or obtaining the location of the terminal 100. One example is the Global Position System (GPS) module. The GPS module receives location information from a plurality of satellites. Here, the location information may include coordinate information represented by latitude and longitude. For example, the GPS module can calculate the current position according to the triangulation method of three different distances using time and distance accurately measured from three or more satellites. For example, a method of obtaining distance and time information from three satellites and correcting an error with one satellite may be used. In particular, the GPS module can obtain not only the location of latitude, longitude, and altitude but also accurate time together with three-dimensional speed information from the location information received from the satellite.

Meanwhile, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to a configuration aspect of the terminal 100.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 receives an input operation from the user and generates input data for controlling the operation of the terminal 100. The user input unit 130 may include a key pad, a dome switch, a touch pad (constant voltage / capacitance), a jog wheel, a jog switch, and the like. In particular, when the touch pad has a mutual layer structure with the display unit 151 described later, this may be referred to as a touch screen.

The sensing unit 140 is in a current state of the terminal 100, such as an open / closed state of the terminal 100, a position of the terminal 100, presence or absence of a user contact, orientation of the terminal 100, acceleration / deceleration of the terminal 100, and the like. Detects and generates a sensing signal for controlling the operation of the terminal 100. For example, when the terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, it may also be responsible for sensing functions related to whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to an external device, and the like.

The interface unit 170 serves as an interface with all external devices connected to the terminal 100. For example, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input / output (I / O) ports, Video I / O (Input / Output) port, earphone port, etc. may be included.

Here, the identification module is a chip that stores various information for authenticating the use authority of the terminal 100, and includes a user identification module (UIM) and a subscriber identify module (SIM). , Universal Subscriber Identity Module (“USIM”), and the like. In addition, a device equipped with an identification module (hereinafter, referred to as an “identification device”) may be manufactured in the form of a smart card. Therefore, the identification device may be connected to the terminal 100 through a port. The interface unit 170 receives data or power from an external device, and transmits the data to each component inside the terminal 100 or transmits the data inside the terminal 100 to an external device.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, a sound output module 152, an alarm unit 153, and the like.

The display unit 151 displays and outputs information processed by the terminal 100. For example, when the terminal is in a call mode, the terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the terminal 100 is in a video call mode or a photographing mode, the terminal 100 displays a photographed and / or received image, a UI, or a GUI.

Meanwhile, as described above, when the display unit 151 and the touch pad form a mutual layer structure to form a touch screen, the display unit 151 may be used as an input device in addition to the output device. The display unit 151 may be a flexible display such as a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, an electronic paper, or the like. The display device may include at least one of a flexible display and a 3D display. And, depending on the form of the terminal 100, two or more display units 151 may exist. For example, an external display unit (not shown) and an internal display unit (not shown) may be simultaneously provided in the terminal 100.

The sound output module 152 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. In addition, the sound output module 152 outputs a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed by the terminal 100. The sound output module 152 may include a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the terminal 100. Examples of events occurring in the terminal include call signal reception, message reception, and key signal input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal can be output in the form of vibration. When a call signal is received or a message is received, the alarm unit 153 may output a vibration to inform this. Alternatively, when a key signal is input, the alarm unit 153 may output a vibration in response to the key signal input. Through the vibration output as described above, the user can recognize the occurrence of the event. Of course, the signal for event occurrence notification may be output through the display unit 151 or the sound output module 152.

The memory 160 may store a program for processing and controlling the controller 180 and may provide a function for temporarily storing input / output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM Random Access Memory (RAM) Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM) magnetic memory, It may include at least one type of storage medium of the optical disk. In addition, the terminal 100 may operate a web storage that performs a storage function of the memory 160 on the Internet.

And the controller 180 typically controls the overall operation of the terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

The various embodiments described herein may be implemented in a computer readable recording medium using, for example, software, hardware or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs). It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing functions. In some cases such embodiments may be implemented by the controller 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. In addition, the software codes may be stored in the memory 160 and executed by the control unit 180. [

In the above, the terminal related to the present invention has been described in terms of components according to functions. Hereinafter, referring to FIGS. 2 and 3, the terminal related to the present invention will be further described in terms of components according to appearance. Hereinafter, for simplicity, a slider type terminal is described as an example among various types of terminals such as a folder type, a bar type, a swing type, a slider type, and the like. Therefore, the present invention is not limited to the slider type terminal, but can be applied to all types of terminals including the above-described type.

Figure 2 is a perspective view of the terminal according to an embodiment of the present invention from the front.

The terminal 100 according to the present invention includes a first body 200 and a second body 205 configured to be slidable in at least one direction on the first body 200.

Meanwhile, in the case of a folder type, the terminal 100 according to the present invention includes a first body and a second body configured to be folded or unfolded at least one side of the first body.

A state in which the first body 200 is disposed to overlap the second body 205 may be referred to as a closed configuration, and as shown in the drawing, the first body 200 may be referred to as the second body 205. The exposed state of at least a portion of the N may be referred to as an open configuration.

Although the terminal 100 operates mainly in the standby mode in the closed state, the standby mode may be released by a user's operation. In addition, the terminal 100 operates mainly in a call mode or the like in an open state, but may be switched to a standby mode by a user's operation or a lapse of a predetermined time.

The case (casing, housing, cover, etc.) forming the exterior of the first body 200 is formed by the first front case 220 and the first rear case 225. Various electronic components are embedded in the space formed by the first front case 220 and the first rear case 225. At least one intermediate case may be further disposed between the first front case 220 and the first rear case 225.

The cases may be formed by injecting a synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the sound output module 152, the camera 121, or the first user input unit 210 may be disposed on the first body 200, specifically, the first front case 220.

The display unit 151 includes a liquid crystal display (LCD), organic light emitting diodes (OLED), and the like, which visually express information.

In addition, since the touch pad is superimposed on the display unit 151 in a layer structure, the display unit 151 may operate as a touch screen to enable input of information by a user's touch.

The sound output module 152 may be implemented in the form of a speaker.

The camera 121 may be implemented to be suitable for capturing an image or a video of a user or the like.

Like the first body 200, the case forming the exterior of the second body 205 is formed by the second front case 230 and the second rear case 235.

The second user input unit 215 may be disposed on the second body 205, specifically, on the front face of the second front case 230.

The third user input unit 245, the microphone 122, and the interface unit 170 may be disposed on at least one of the second front case 230 or the second rear case 235.

The first to third user input units 210, 215, and 245 may be collectively referred to as the user input unit 130, and may be employed in any manner as long as the user is tactile in a tactile manner.

For example, the user input unit 130 may be implemented as a dome switch or a touch pad that may receive a command or information by a user's push or touch operation, or may be operated by a wheel or jog method or a joystick that rotates a key. Or the like.

In the functional aspect, the first user input unit 210 is for inputting a command such as start, end, scroll, etc., and the second user input unit 215 is for inputting numbers, letters, symbols, and the like. In addition, the third user input unit 245 may operate as a hot-key for activating a special function in the terminal.

The microphone 122 may be implemented in a form suitable for receiving a user's voice, other sounds, and the like.

The interface unit 170 serves as a path for allowing a terminal related to the present invention to exchange data with an external device. For example, the interface unit 170 is wired or wirelessly, a connection terminal for connecting to the earphone, a port for short-range communication (for example, an infrared port (IrDA port), Bluetooth port (Bluetooth port), wireless LAN port ( wireless Lan port), or the like, or at least one of power supply terminals for supplying power to the terminal.

The interface unit 170 may be a card socket that accommodates an external card such as a subscriber identification module (SIM) or a user identity module (UIM) and a memory card for storing information.

The power supply unit 190 for supplying power to the terminal 100 is mounted on the second rear case 235 side.

The power supply unit 190 may be detachably coupled for charging, for example, as a rechargeable battery.

3 is a perspective view of the terminal shown in FIG.

Referring to FIG. 3, a camera 121 may be additionally mounted on the rear surface of the second rear case 235 of the second body 205. The camera 121 mounted on the second body 205 has a photographing direction substantially opposite to that of the camera 121 of the first body 200, and is different from the camera 121 of the first body 200. It can have

For example, the camera 121 of the first body 200 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call, and the camera 121 of the second body 205 is provided. ), It is desirable to have a high pixel, because it usually takes a photograph of a general subject and do not transmit it immediately.

The flash 250 and the mirror 255 may be additionally disposed adjacent to the camera 121 of the second body 205. The flash 250 emits light toward the subject when the subject is photographed by the camera 121 of the second body 205. The mirror 255 allows the user to see his / her own face or the like when the user wishes to photograph (self-photograph) the user using the camera 121 of the second body 205.

The sound output module 152 may be further disposed on the second rear case 235.

The sound output module 152 of the second body 205 may implement a stereo function together with the sound output module 152 of the first body 200, and may be used for a call in the speakerphone mode.

In addition, an antenna 260 for receiving broadcast signals may be disposed on one side of the second rear case 235. The antenna 260 may be installed to be pulled out of the second body 205.

A portion of the slide module 265 that slidably couples the first body 200 and the second body 205 to the first rear case 225 side of the first body 200 is disposed.

The other part of the slide module 265 may be disposed on the second front case 230 side of the second body 205 and may not be exposed to the outside as shown in the drawing.

In the above description, the camera 121 and the like have been described as being disposed on the second body 205, but are not necessarily limited thereto.

For example, at least one or more of the configurations described as being disposed in the second rear case 235, such as the camera 121 of the second body 205, may be the first body 200, mainly the first rear case ( 225 may also be mounted. If so, there is an advantage that the configuration (s) disposed in the first rear case 225 in the closed state are protected by the second body 205. In addition, even if the camera 121 of the second body 205 is not provided separately, the camera 121 of the first body 200 is rotatably formed so that the photographing direction of the camera 121 of the second body 205 is rotated. It may be configured to shoot until.

The terminal 100 illustrated in FIGS. 1 to 3 includes a wired / wireless communication system and a satellite-based communication system so as to be operable in a communication system capable of transmitting data through a frame or packet. Can be configured.

Hereinafter, a wireless communication system in which a terminal according to an embodiment of the present invention can operate will be described with reference to FIG. 4.

The communication system may use different air interfaces and / or physical layers. For example, a wireless interface available by a communication system may include frequency division multiple access (FDMA), time division multiple access (TDMA), code division multiple access (Code Division Multiple Access). Access (CDMA), Universal Mobile Telecommunications Systems (UMTS) (in particular, Long Term Evolution (LTE), Global System for Mobile Communications (GSM)), and the like. In the following description, for convenience of explanation, the description will be limited to CDMA, but the present invention is naturally applicable to all communication systems including the CDMA wireless communication system.

As shown in FIG. 4, the CDMA wireless communication system includes a plurality of terminals 100, a plurality of base stations (BS) 270, and base station controllers (BSCs) 275. And a mobile switching center (MSC) 280. The MSC 280 is configured to be connected to a Public Switched Telephone Network (“PSTN”) 290 and is also configured to be connected to BSCs 275. The BSCs 275 may be connected to the BS 270 through a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs 275 may be included in the system shown in FIG.

Each BS 270 may include at least one sector, and each sector may include an omnidirectional antenna or an antenna pointing in a radial direction from BS 270. In addition, each sector may include two or more antennas of various types. Each BS 270 may be configured to support a plurality of frequency assignments, each of which has a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of sectors and frequency assignments may be called a CDMA channel. BS 270 may be called Base Station Tranceiver Subsystem ('BTSs'). In such a case, the word “base station” may be called the sum of one BSC 275 and at least one BS 270. The base station may also indicate “cell site”. Alternatively, each of the plurality of sectors for a particular BS 270 may be called a plurality of cell sites.

As shown in FIG. 4, the broadcasting transmitter (BT) 295 transmits a broadcast signal to the terminals 100 operating in the system. The broadcast receiving module 111 illustrated in FIG. 1 is provided in the terminal 100 to receive a broadcast signal transmitted by the BT 295.

In addition, FIG. 4 illustrates multiple satellite positioning systems (GPS) satellites 300. The satellites 300 help to locate the at least one terminal of the plurality of terminals 100. Although two satellites are shown in FIG. 4, useful location information may be obtained by two or less or more satellites. The location information module 115 shown in FIG. 1 cooperates with the satellites 300 to obtain desired location information. Here you can track your location using GPS tracking technology as well as any technology that can track your location. In addition, at least one of the GPS satellites 300 may optionally or additionally be responsible for satellite DMB transmission.

During typical operation of a wireless communication system, BS 270 receives a reverse link signal from various terminals 100. At this time, the terminals 100 are connecting a call, transmitting or receiving a message, or performing another communication operation. Each of the reverse link signals received by a particular base station 270 is processed within by a particular base station 270. The data generated as a result of the processing is transmitted to the connected BSC 275. BSC 275 provides call resource allocation and mobility management functionality, including the organization of soft handoffs between base stations 270. In addition, the BSC 275 transmits the received data to the MSC 280, and the MSC 280 provides an additional transmission service for the connection with the PSTN 290. Similarly, PSTN 290 connects with MSC 280, MSC 280 connects with BSCs 275, and BSCs 275 send BSs 270 to transmit a forward link signal to terminals 100. ).

The mobile communication terminal according to the present invention includes an e-paper on the display unit 151. The entire display unit 151 may be made of electronic paper, or may be configured as an auxiliary display unit. In this case, in the case of the auxiliary display unit, a detachable form or a method of transmitting and receiving data in a non-contact manner with the main body is also possible. The present invention relates to a method for controlling the color of text and background displayed on the electronic paper. Therefore, the configuration of the electronic paper can be applied to a general technique and assumes that it has a color display function.

The controller 180 controls to change the color of the text and the background to be displayed through the display to a color having high clarity and to output the same. In this case, the color change of the text and the background may be automatically changed in the order of high clarity or may be controlled by referring to user setting information stored in the memory 160. Users with color vision may have invisible colors, so it is also necessary to control the color according to the user's preferences.

When the sensor unit 140 further includes an optical sensor for detecting an amount of ambient light and transmitting a detection result to the controller 180, the controller is configured to display text and background colors to be displayed according to information provided from the optical sensor. The manner of controlling the may also be implemented.

The memory 160 stores the threshold value for the brightness for the controller 180 to determine the degree of light and dark of the surrounding environment. The memory 160 is the color of the text and the background to be output to the electronic paper included in the display unit according to the embodiment of the present invention according to the user's setting information or according to the surrounding environment information obtained from the light sensor It stores a lookup table or information to change the.

The lookup table is to reduce the amount of calculation required by the controller 180. If the lookup table is stored in the memory, the controller 180 controls to display the color information found by searching in the lookup table on the electronic paper based on information on a situation in which a complementary color component is required.

For example, the order of high clarity is

1) Black: Yellow ＞ 2) Green: White ＞ 3) Red: White ＞ 4) Blue: White ＞ 5) Black: Gray

In the color change of the text and the background, it is preferable to change the text and the background to be displayed to the color having the largest color difference, that is, the color having a high complementary color relationship. However, instead of changing to a form with high clarity unconditionally, it may be set to change the contrast with the color most similar to the original.

5 is a flowchart illustrating a process of a display display control method according to the present invention.

The data output through the display unit is temporarily stored according to the use of the terminal. Since the implementation of the present invention changes the color of the text and the background, in the following description, the output of the image is not taken as an example, but the change of the image color may also be applicable to the present invention. In general, data output in the form of text may exist in various ways. For example, it may be in various forms such as a phone book, a text message or text data included in a web page received through the Internet (S501).

Subsequently, it is checked whether the memory 160 includes color setting information on the text and the background to be output on the electronic paper (S502). If the setting information is stored in the memory, the corresponding information is read. If there is no information individually set by the user, the controller 180 uses the default value (S503).

The text and background data stored in the memory are converted into complementary color information by using information set by a user or a value determined by default by the controller. In other words, the text and the background to be displayed are changed to the color with the largest color difference, that is, the color that has a high clarity complementary color. Change it. If there is a value set by the user, the nearest complementary color information is extracted (S504).

The text and the background temporarily stored in the memory 160 are output through the electronic paper using the extracted complementary color information (S505).

Therefore, it is possible to secure visibility at night and in an external environment in an ink type electronic paper having no backlight such as a liquid crystal display device.

In addition, according to an embodiment of the present invention, the above-described method may be embodied as computer readable codes on a medium in which a program is recorded. The computer readable medium includes all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, and may also be implemented in the form of carrier waves (eg, transmission over the Internet). Include. Also, the computer may include a control unit 180 of the terminal.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings. In addition, the above-described embodiments may be configured by selectively combining all or part of the embodiments so that various modifications may be made.

1 is a block diagram of a terminal according to an embodiment of the present invention.

2 is a front perspective view of a terminal according to an embodiment of the present invention.

3 is a rear configuration diagram of a terminal according to an embodiment of the present invention.

4 is a block diagram of a wireless communication system in which a terminal according to an embodiment of the present invention may operate.

5 is a flowchart illustrating a process of a display control method according to the present invention.

Claims (6)

A display unit including an e-paper; And a controller which controls to change the color of the text and the background to be displayed through the display to a color having high clarity. The display apparatus of claim 1, further comprising a memory configured to store complementary color information of the text and the background to be displayed through the display unit and setting information of the user. The control unit may further include a color of the text and the background to be displayed according to the information stored in the memory. Mobile communication terminal, characterized in that for controlling. The display apparatus of claim 1, further comprising an optical sensor configured to detect an amount of ambient light and transmit a detection result to the controller, wherein the controller controls the color of the text and the background to be displayed according to the information provided from the optical sensor. Characterized in a mobile communication terminal. In the method of controlling the color of the data displayed on the electronic paper in the mobile communication terminal including the electronic paper on the display, Temporarily storing the color information of the text and the background to be displayed on the electronic paper; Calculating complementary color information of the text and the background; And displaying the text and the background on the electronic paper according to the calculated information. 5. The mobile terminal of claim 4, wherein the mobile communication terminal further comprises a memory storing information on complementary colors of the text and the background to be displayed through the display unit and setting information of the user. Display control method using a mobile communication terminal, characterized in that it further comprises the step of controlling the color of the. The method of claim 4, wherein Sensing the amount of light around the mobile communication terminal; And controlling the color of the text and the background to be displayed on the electronic paper according to the light quantity detection result.

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