KR20060084694A - Mobile communication terminal and method for outputting multimedia image displayed thereby to external display device - Google Patents

Abstract

The present invention relates to a mobile communication terminal, and more particularly, to a mobile communication terminal capable of manipulating a terminal screen output to an external display device through movement of the terminal and a method of outputting a multimedia playback screen of the terminal to an external display device. It is about.

According to an aspect of the present invention, there is provided a mobile communication terminal for outputting an image signal displayed on an LCD display to an external display device through a cable, the mobile communication terminal comprising: an acceleration sensor for sensing an acceleration of the mobile communication terminal; A controller including a coordinate calculator configured to calculate motion coordinate data according to the movement of the mobile communication terminal by using the acceleration data detected by the acceleration sensor; A signal processor configured to output an image signal to an external display device according to a control signal of the controller, and output a synthesized pointer image corresponding to the motion coordinate data calculated from the coordinate calculator to the output image signal; An image converter converting the video signal output from the signal processor into a television signal; It characterized in that it comprises an interface for outputting the image output from the image conversion unit to the outside.

Mobile terminal, television, acceleration sensor

Description

Mobile communication terminal and method for outputting multimedia image displayed thereby to external display device}

1 is a view schematically showing the configuration of a mobile communication terminal according to the present invention.

2 is a flowchart illustrating a screen output process of a mobile communication terminal according to the present invention;

3 is a view showing an example screen of the television screen according to the movement of the mobile communication terminal according to the present invention.

<Explanation of symbols for the main parts of the drawings>

110: control panel

120: RF transceiver

130: memory

140: acceleration sensor

150: control unit

151: coordinate calculation unit

152: button execution processing unit

153: Game Progress

160: signal conversion unit

161: image generation unit

162: video input unit

163: video synthesis unit

164: video output unit

170: LCD display unit

180: image converter

190: interface unit

300: external display device

The present invention relates to a mobile communication terminal, and more particularly, to a mobile communication terminal capable of manipulating a terminal screen output to an external display device through movement of the terminal and a method of outputting a multimedia playback screen of the terminal to an external display device. It is about.

Recently, the mobile communication terminal has advanced from the conventional simple call function, and has become multimedia by providing various additional functions such as wireless internet connection and digital camera function as well as transmitting and receiving text data.

In addition, the mobile communication terminal has a function of downloading and providing various contents such as photographs and movies as well as searching for various information through a wireless Internet connection. Recently, the demand for downloading and viewing various video contents or games, especially among young people, is gradually increasing.

However, the liquid crystal screen of the mobile communication terminal currently used is relatively larger than the size of the mobile communication terminal, but when the user plays a movie or a game through the liquid crystal screen, the output image is limited to the size of the liquid crystal screen, thereby widening the wide screen. There is a need to enjoy using an external video device.

In order to cope with this need, a technology for outputting an image output from a mobile communication terminal to an external image device to view an image of the terminal through an external image device is known. According to this technology, a video is input from a terminal through a cable and a video is driven from an external video device by a microcomputer for driving the video data.

Accordingly, various pictures or videos downloaded from the Internet or a computer can be viewed through a wide screen of an external video device.

However, since the image output to the external video device can be selected only by the direction key provided in the mobile communication terminal according to the prior art, it is troublesome to operate the direction key one by one when controlling the output image.

In particular, when the video output to an external video device is a game video, the game video output to the external video device is manipulated only by the direction keys of the terminal, so that the type of game that can be played while viewing the screen of the external video device is simple. There is a problem that is limited to select games.

The present invention has been made to solve the above problems, an object of the present invention is to provide a mobile communication terminal that can manipulate the image of the terminal output to the external display device through the movement of the terminal.

In particular, when an image output to an external display device is a game image, an object of the present invention is to provide a mobile communication terminal that can more easily manipulate a game through the movement of the terminal.

A mobile communication terminal according to an aspect of the present invention for achieving the above object is a mobile communication terminal for outputting a video signal displayed on the LCD display to the external display device via a cable, the mobile communication terminal is a mobile communication terminal A control unit including an acceleration sensor for sensing an acceleration of the control unit; a coordinate calculation unit configured to calculate motion coordinate data according to the movement of the mobile communication terminal using the acceleration data detected by the acceleration sensor; and an image signal according to a control signal of the control unit. And a signal processor for synthesizing and outputting a pointer image corresponding to the motion coordinate data calculated from the coordinate calculator to the output image signal, and converting the image signal output from the signal processor into a television signal. Video conversion unit And an image output from the image conversion unit comprising an interface for outputting to the outside.

According to such a configuration, the mobile communication terminal according to the present invention synthesizes and outputs a pointer image according to the movement of the terminal to an image output to an external display device through an acceleration sensor provided inside the terminal, thereby outputting to the external display device. The video can be manipulated simply by moving the terminal.

In particular, when the image output to the external display device is a game image, the game can be more easily manipulated through the movement of the terminal without a key operation such as a direction key.

In addition, a method for outputting a multimedia playback screen of a mobile communication terminal to an external display device according to another aspect of the present invention for achieving the above object is to output an image signal displayed on the mobile communication terminal to an external display device via a cable. In the method, a motion detection step of sensing the acceleration according to the movement of the mobile communication terminal, a coordinate calculation step of calculating the motion coordinates according to the movement of the mobile communication terminal using the detected acceleration data, and input image signal A signal processing step of synthesizing and outputting a pointer image corresponding to the motion coordinates calculated to the output image signal, and outputting the converted video signal to a television signal; It features.

The invention will become more apparent through the preferred embodiments described below with reference to the accompanying drawings. Hereinafter will be described in detail to enable those skilled in the art to easily understand and reproduce through these embodiments.

1 is a view schematically showing the configuration of a mobile communication terminal according to a preferred embodiment of the present invention.

The mobile communication terminal according to the present invention can output an image output to the LCD display of the terminal to an external display device through a cable. Hereinafter, the configuration of the mobile communication terminal according to the present invention will be described in detail with reference to a television. do.

As shown in the figure, the mobile communication terminal according to the present invention includes an acceleration sensor 140, a controller 150, a signal processor 160, an image converter 180, and an interface 190.

In addition, the RF transceiver 120 for transmitting and receiving voice and data through communication with the base station, a ROM region in which a control program controlling the operation of the terminal is stored, and a RAM region in which data generated during the terminal control operation are temporarily stored. It includes a memory 130 made up of. In addition, the mobile communication terminal includes an operation unit 110 that receives a user's command and transmits it to the controller 150, and an LCD display unit 170 which outputs an image input from the signal processor 160. The operation unit 110 and the LCD display unit 170 may be one of the well-known configuration. And in the present invention, the operation unit 110 includes an operation button for manipulating the pointer image synthesized to the image output to the television in accordance with a preferred aspect. Here, the operation button may be formed separately on the side of the terminal, it may be one of a plurality of buttons provided on the operation unit.

Although not shown in the drawing, the camera may be provided with a camera for converting and outputting an image signal input from the lens system into an electrical signal.

Meanwhile, the acceleration sensor 140 according to the characteristic aspect of the present invention senses the movement of the mobile communication terminal and outputs the acceleration of the terminal according to the movement to the controller 150. The acceleration sensor 140 detects the movement of an object by using an inertial force, an electric deformation, and an application principle of a gyro.

In another embodiment, a micro geomagnetic sensor may be used as the sensing means for sensing the movement of the terminal. This micro geomagnetism sensor uses micro-electromechanical system (MEMS) technology to provide direction, velocity, and position information simultaneously. As a result, it can operate with less power and has various functions such as direction indication, display rotation, motion control and tilt compensation.

Since the acceleration sensor and the ultra-small geomagnetic sensor are already known technologies before the filing date of the present application, a description thereof will be omitted.

In addition, the controller 150 controls driving of the entire apparatus and outputs the voice and various data processed therein to the speaker (not shown) and the LCD display unit 170. In a preferred embodiment of the present invention, the control unit 150 is an integrated circuit, commonly referred to as an MSM chip, and includes dedicated hardware for processing communication therein, a digital signal processor, and a general purpose microprocessor.

The video signal processed by the control unit having such a configuration is distributed on the bus in a single format, which in one embodiment is YUV format.

Accordingly, when the controller processes an image signal input from the outside, the controller converts the internal output into a YUV format and outputs the internal input. The video signal processed by the controller is output to the television through a signal processor to be described later.

In addition, the control unit 150 outputs an image signal to the television 300 according to a characteristic aspect of the present invention, and includes a coordinate calculation unit 151 for synthesizing and outputting a pointer image to the output image signal. The coordinate calculator 151 calculates motion coordinate data according to the movement of the terminal by using the acceleration data input from the acceleration sensor 140. The motion coordinate data calculated through the coordinate calculator is used as source data to generate a pointer image, which will be described later.

Accordingly, when the user moves the terminal, the mobile communication terminal according to the present invention calculates coordinate data of the movement through the coordinate calculator.

However, in the case of the coordinate calculation unit 151 described above, it is not necessarily a necessary configuration of the control unit 150. That is, in the preferred embodiment of the present invention, the acceleration sensor is used as the motion detection means of the terminal. However, as described above, in the case of the ultra-small geomagnetic sensor, the coordinate calculation unit 151 may be omitted. This is because the geomagnetic sensor is provided with the movement coordinate data according to the movement through a microprocessor provided therein.

Therefore, since the coordinate calculation unit that calculates the motion coordinates in the control unit is not necessary when using the ultra-small geomagnetic sensor, the processing load of the microprocessor in the control unit can be lowered and the real-time processing can be made easier, resulting in a wide variety of multimedia contents, for example, It can easily handle multimedia files such as videos or games.

According to an additional aspect of the present invention, the controller 150 further includes a button execution processor 152 for stopping the motion calculation operation of the coordinate calculator 151 as the operation button is pressed.

Accordingly, when outputting the terminal screen to the television 300, if the terminal is moved while pressing the operation button, the operation of the coordinate calculating unit 151 is stopped while the terminal is pressed, so that the pointer is output to the television even if the terminal is not moved greatly in space. You can easily manipulate the image.

That is, even if the user moves the terminal in a predetermined space and then moves to the original position while pressing the operation button, the coordinate calculation unit of the controller does not operate with respect to this movement, so that the pointer image to be described later can be easily manipulated.

Meanwhile, the signal processor 160 converts the YUV signal output from the controller 150 into an RGB signal output to the LCD display 170. According to a preferred embodiment of the present invention, the signal processor 160 implementing such a function outputs an image signal to the television 300 which is an external display device according to a control signal of the controller 150.

According to a characteristic aspect of the present invention, the signal processor 160 synthesizes and outputs a pointer image corresponding to the movement of the terminal to the output image signal. That is, the signal processor 160 according to the present invention includes an image generator 161, an image input unit 162, an image synthesizer 163, and an image output unit 164 as shown in the drawing.

The image generator 161 generates a pointer image corresponding to the movement of the terminal according to the user's manipulation. That is, the image generator 161 generates a pointer image indicating the current position of the terminal with reference to the negative coordinate data input from the coordinate calculator 151 of the controller.

The image input unit 162 receives an image signal processed by the controller 150. In a preferred embodiment, the video signal input to the video input unit 162 is a game progress video. In this case, the controller 150 further includes a game progress unit 153 for generating a game progress image by generating a game progress image according to a user's operation signal and outputting the generated game progress image to the image input unit 162. have. In another embodiment, the video signal input to the video input unit 162 may be a video signal received through a TV tuner when the terminal is a TV phone. Further, in another embodiment, the image signal input to the image input unit 162 may be a still image captured by a camera or a video signal downloaded from the outside.

The image synthesizer 163 synthesizes two image signals input from the image input unit 162 and the image generator 161. That is, the video output unit 162 synthesizes the moving image, the moving image, and the still image such as a picture and the pointer image indicating the movement of the terminal output from the image generating unit 161 and outputs it.

As such, the image signal output from the image synthesizing unit 163 is output to the television 300 through the image output unit 164 according to the control signal of the controller 150. At this time, the video signal output through the video output unit 164 is output in the 16-bit RGB data format.

According to this configuration, the mobile communication terminal according to the present invention synthesizes and outputs a pointer image according to the movement of the terminal to an image signal output to the television through the signal processor. In other words, the pointer image according to the movement of the terminal is synthesized with the original image input from the control unit and output to the output image on the television.

As described above, when the user moves the terminal without pressing the operation button, the output screen output to the television is displayed while the pointer image according to the movement is changed on the screen of the television.

The image converter 180 converts the image signal output from the signal processor 160 into a television signal. That is, the image converter 180 converts the 16-bit RGB data format output from the signal processor 160 into an NTSC format, which is a television signal, and outputs the converted signal.

The image converted into a television signal through the image converter 180 is output to the television 300 through the interface 190. In a preferred embodiment of the present invention, the interface unit 190 is a physical kit connected to a 24-pin common connector of a cable, and the mobile communication terminal according to the present invention is physically connected to a television through a cable connected to the interface unit. And outputs the screen of the terminal to the television.

Therefore, unlike the conventional method in which the mobile communication terminal according to the present invention operates the output screen of the television by using the direction key, it is possible to simply operate the output screen of the television through the movement of the terminal. to provide. Accordingly, the user can easily manipulate the output screen output to the television through the movement of the terminal.

Hereinafter, a method of outputting an image displayed on a television through a mobile communication terminal having the above configuration will be described with reference to FIGS. 1 to 3, and the output mode described will be described on the assumption of a television output mode. Shall be.

2 is a flowchart illustrating a screen output process of a mobile communication terminal according to the present invention, and FIG. 3 is a diagram illustrating an example screen of a television screen according to the movement of the mobile communication terminal according to the present invention.

First, the mobile communication terminal detects the movement of the terminal itself by the user (S110). That is, when the user moves the mobile communication terminal, the acceleration sensor 140 provided therein detects the movement of the terminal to detect the acceleration according to the movement. Accordingly, the mobile communication terminal according to the present invention recognizes the movement of the terminal through the acceleration sensor.

At this time, the controller 150 of the mobile communication terminal calculates a motion coordinate according to the movement of the terminal from the acceleration data detected by the acceleration sensor 140 according to the signal input from the operation button (S120). In other words, when the signal input from the operation button is a signal in the pressed state, the terminal does not calculate the motion coordinate data according to the motion even if the terminal recognizes the movement, and enters the process again at step S110 (S130). However, if the input signal is a signal in a state that is not pressed, it calculates the coordinate data moved accordingly and enters the next step (S140).

Next, a pointer image corresponding to the movement of the terminal is synthesized and output to the output video signal (S150). That is, the mobile communication terminal synthesizes and outputs a pointer image corresponding to the motion coordinates of the terminal calculated in step S140 to an image signal output to the television through the signal processor 160.

As described above, a process of signal processing in which a pointer image is synthesized and output to an image input from the controller 150 will be described in detail.

First, the signal processor 160 generates a pointer image corresponding to the motion coordinates calculated in the above-described coordinate calculation step through the image generator 161 (S151). Then, the pointer image generated by the image generator 161 is synthesized with the image signal input from the controller 150 through the image synthesizer 163 (S152). At this time, in the preferred embodiment of the present invention, the video signal input from the controller 150 is a game progress image input from the game progress unit 153 of the controller. In another embodiment, the video signal input to the video input unit 162 may be a video signal received through a TV tuner when the terminal is a TV phone. Further, in another embodiment, the image signal input to the image input unit 162 may be a still image captured by a camera or a video signal downloaded from the outside.

Accordingly, the signal processor 160 displays the movement of the terminal output from the image generator 161 on a still image such as a game progress image, a video, or a photo output from the image input unit 162 through the image synthesizer 163. It outputs by compositing with pointer image.

The image output unit 164 outputs the image signal synthesized in step S152. At this time, the output video signal is output in the 16-bit RGB data format output to the LCD display (S153).

 Therefore, the mobile communication terminal according to the present invention outputs a single screen synthesized with a pointer image according to the movement of the terminal to the original image input from the controller through a signal processing process. When the user moves the terminal without pressing the operation button, the image output to the television is displayed with the pointer image according to the movement at different positions on the screen of the television each time it is moved.

In this way, the video signal processed in step S150 is converted into a television signal and output to the television. That is, 16-bit GRB data, which is an image signal output from the image output unit 164 of the signal processing unit 160, is converted into an NTSC signal, which is a television signal, through the image conversion unit 180 and output.

Accordingly, as shown in FIG. 3, the image output to the television by the method described above is displayed by superimposing a pointer image indicating the movement of the terminal on the original image input from the controller according to the movement of the terminal.

Accordingly, when the user moves the terminal left and right up and down without pressing the operation button, the pointer image according to the movement is displayed in different positions on the screen of the television every time the user moves the output. The screen can be operated easily.

As described in detail above, the method for outputting the multimedia communication screen of the mobile communication terminal and the mobile communication terminal according to the present invention to the external display device includes a pointer image according to the movement of the terminal through an acceleration sensor provided inside the terminal. By synthesizing and outputting the video output to the display device, unlike the conventional method of operating the TV's output screen using the direction keys, it provides convenience to simply operate the output screen of the television through the movement of the terminal. .

Accordingly, the user can easily manipulate the output screen output to the television through the movement of the terminal.

In particular, when the image output to the external display device is a game image, the game can be more easily manipulated through the movement of the terminal without a key operation such as a direction key.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many different and obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Claims (8)

In the mobile communication terminal for outputting the video signal displayed on the LCD display to the external display device via a cable, The mobile communication terminal: An acceleration sensor for sensing an acceleration of the mobile communication terminal; A controller including a coordinate calculator configured to calculate motion coordinate data according to the movement of the mobile communication terminal by using the acceleration data detected by the acceleration sensor; A signal processor configured to output an image signal to an external display device according to a control signal of the controller, and output a synthesized pointer image corresponding to the motion coordinate data calculated from the coordinate calculator to the output image signal; An image converter converting the video signal output from the signal processor into a television signal; An interface unit which outputs an image output from the image conversion unit to the outside; Mobile communication terminal comprising a. The method of claim 1, The mobile communication terminal further includes an operation button, And a button execution processor configured to stop the movement calculation operation in the coordinate calculation unit as the control unit is pressed. The method of claim 1 or 2, wherein the signal processing unit: An image generator which generates a pointer image corresponding to the motion coordinate data inputted from the coordinate calculator; An image input unit to which an image signal processed by the controller is input; An image synthesizing unit for synthesizing a pointer image generated by the image generating unit with an image signal input from the image input unit; And a video output unit configured to output a synthesized video signal inputted from the video synthesizing processor. The method of claim 3, wherein the control unit: And a game progress unit configured to generate a game progress image by generating a game progress image according to a user's manipulation signal, and output the generated game progress image to the image input unit. In the method for outputting the video signal displayed on the mobile communication terminal to the external display device via a cable, A motion detecting step of sensing an acceleration according to the movement of the mobile communication terminal; A coordinate calculation step of calculating movement coordinates according to the movement of the mobile communication terminal by using the detected acceleration data; A signal processing step of outputting an input image signal to an external display device and synthesizing and outputting a pointer image corresponding to a motion coordinate calculated on the output image signal; A video output step of converting the output video signal into a television signal and outputting the converted video signal; And outputting a multimedia playback screen of the mobile communication terminal to an external display device. The method of claim 5, wherein Method for outputting the multimedia playback screen of the mobile communication terminal to an external display device: And a button execution processing step of stopping a motion calculation operation in the coordinate calculation step as the operation button is pressed. 7. The method according to claim 5 or 6, wherein the signal processing step is: An image generation step of generating a pointer image corresponding to the motion coordinates inputted from the coordinate calculation step; An image synthesizing step of synthesizing a pointer image generated on an input image signal; And a signal outputting step of outputting the synthesized processed video signal to the external display device. The method of claim 7, wherein And the video signal is a game progress image input from a game progress unit provided in a control unit of the mobile communication terminal to the external display device.

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