KR20190041090A - Image display apparatus - Google Patents

Abstract

The present invention relates to an image display device. According to an embodiment of the present invention, the image display device comprises a display and a control unit. If the luminance of a first image is equal to or higher than a first level and the first image does not include a black region in a state in which there is an image enlargement input during the first image display, the control unit controls a second image, in which a first image is enlarged, to be displayed on a main screen of the display and a third image, in which the first image is reduced, to be displayed on a sub-screen of the display. If the luminance of the first image is less than the first level, the control unit controls a fourth image, in which the first image is not enlarged, to be displayed on the main screen of the display, and the third image, in which the first image is reduced, to be displayed on the sub-screen. Thus, when there is an image display enlargement input during image display, it is possible to selectively enlarge the image depending on the luminance of the image, thereby providing an image suitable for user viewing.

Description

[0001] The present invention relates to an image display apparatus,

The present invention relates to an image display apparatus, and more particularly, to an image display apparatus capable of providing an image suitable for user viewing by selectively enlarging the image display apparatus in accordance with the brightness of the image, .

The video display device is a device having a function of providing an image that a user can view. The user can view various images through the video display device.

Particularly, the video display device can display a broadcast video. The video display apparatus can provide a user-selected broadcast signal among broadcasting signals transmitted from the broadcasting station, and the broadcast video can be displayed on the display.

On the other hand, data sharing with various electronic devices is possible in a video display device, and various researches for mirroring between a mobile terminal and a video display device are being carried out.

An object of the present invention is to provide an image display apparatus capable of providing an image suitable for a user's viewing by enlarging selectively according to the brightness of the image when there is an enlarged image display input during image display.

It is another object of the present invention to provide an image display device capable of providing an image suitable for a user viewing by enlarging the image display enlargement input according to the brightness of the image when there is an image display enlargement input at the time of mirroring between the mobile terminal and the image display device Device.

According to another aspect of the present invention, there is provided an image display apparatus including: a display; a display unit; a display unit; Controls to display a second image in which the first image is enlarged on the main screen of the display when the black area is not included and controls the third image to display the reduced first image on the sub- When the luminance of the first image is less than the first level, control is performed to display a fourth image on which the first image is not enlarged on the main screen of the display, and control to display a third image on which the first image is reduced on the sub- .

According to another aspect of the present invention, there is provided an image display apparatus including a display and an image enlargement input during a first image display, wherein a luminance of the first image is less than a luminance of the first image, And a control unit for controlling the display unit to display an image in which the first image is not enlarged on the main screen of the display and to control the display unit to display the reduced image of the first image on the sub-screen.

According to an embodiment of the present invention, an image display apparatus includes: a display; a first image having an image enlargement input during a first image display; a first image having a first level or higher luminance; The control unit controls to display a second image in which the first image is enlarged on the main screen of the display, controls to display the third image in which the first image is reduced on the sub-screen of the display, The control unit controls the display unit to display a fourth image on which the first image is not enlarged on the main screen of the display and controls the display unit to display the third image on which the first image is reduced on the sub- If there is an enlarged image display input during image display, the enlarged image can be selectively enlarged according to the brightness of the image, thereby providing an image suitable for user viewing.

In particular, if the luminance of the first image is less than the first level and includes the black region, control is performed to display a fourth image in which the first image is not enlarged on the main screen of the display, It is possible to provide an image suitable for user viewing by controlling the display of the reduced third image.

On the other hand, when the luminance of the first image is equal to or higher than the first level and the first image includes the black region, the black region in the first image is excluded from the main screen of the display, It is possible to provide an image suitable for user viewing.

On the other hand, in a state where an image displayed on the mobile terminal is displayed on the image display device by mirroring with the mobile terminal, when there is an image display enlargement input, the image is selectively enlarged according to the brightness of the image, It is possible to provide an appropriate image.

On the other hand, when a pointer based on the pointing signal from the remote control device is displayed and a scaling factor by the scaling factor scaling object displayed in the third image in the sub-screen is selected based on the pointer, By controlling the magnification of the first image, user convenience can be increased.

On the other hand, based on the pointer, an area in the third image in the sub-screen is selected, and the selected area is enlarged and displayed on the main screen of the display, thereby enhancing user convenience.

According to another aspect of the present invention, there is provided an image display apparatus including: a display; a first image having a brightness lower than that of the first image display; The control unit controls the main screen of the display to display an image in which the first image is not enlarged and controls the sub-screen to display an image in which the first image is reduced, The user can selectively enlarge the image according to the brightness of the image, thereby providing an image suitable for user viewing.

1 is a view illustrating an image display apparatus for enlarging an image according to an embodiment of the present invention.
2 is an example of an internal block diagram of the video display device of FIG.
3 is an example of an internal block diagram of the control unit of FIG.
FIG. 4 is a diagram showing a control method of the remote control apparatus of FIG. 2. FIG.
5 is an internal block diagram of the remote control device of Fig.
6 is a flowchart showing an example of an operation method of the image display apparatus according to the embodiment of the present invention.
Figs. 7A to 11C are views referred to explain the operation method of Fig. 6. Fig.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The suffix " module " and " part " for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms " module " and " part " may be used interchangeably.

1 is a view illustrating an image display apparatus for enlarging an image according to an embodiment of the present invention.

Referring to the drawings, an image display apparatus 100 for enlarging an image may include a display 180 and a remote controller 200.

For example, when the image enlargement key 201 of the remote control device 200 operates while the first image is being displayed on the display 180, the remote control device 200 may be operated by the image display device 100 An image enlargement input can be transmitted.

Accordingly, the image display apparatus 100 can control to display the enlarged image 710 on the main screen, and display the reduced image 720 on the lower right side of the display .

At this time, within the reduced image 720, a scaling factor adjustment object 708 for adjusting the scaling factor of the image displayed on the main screen can be displayed.

The image display apparatus 100 may be configured such that the scaling magnification adjustment object 708 can be moved within the scaling bar 709 based on the pointing signal of the remote control device 200, Depending on the position, the image displayed on the main screen can be enlarged and displayed with the corresponding scaling factor.

On the other hand, when the black image is included in the image enlargement display, if the black image is directly enlarged, the user's visibility is affected. Accordingly, in the present invention, even if there is an image enlargement input, a method of analyzing the luminance of the source image and selectively enlarging the image according to the luminance of the source image is presented.

That is, according to one embodiment of the present invention, the image display apparatus 100 includes a display 180, and a display controller 180 for controlling the brightness of the first image to be higher than the first level, If the first image does not include a black region, the controller 180 controls the display 180 to display a second image on which the first image is enlarged. On the sub-screen of the display 180, If the brightness of the first image is lower than the first level, control is performed to display a fourth image on which the first image is not enlarged on the main screen of the display 180, The control unit 170 controls the display unit 170 to display a third image having a reduced size of one image. Thus, when there is an enlarged image display input during image display, the enlarged image is selectively enlarged according to the brightness of the image, .

In particular, when the luminance of the first image is less than the first level and includes the black region, control is performed to display a fourth image on which the first image is not enlarged on the main screen of the display 180, It is possible to provide an image suitable for the user viewing by controlling the display of the third image in which one image is reduced.

On the other hand, if the luminance of the first image is equal to or higher than the first level and the first image includes the black region, the black region in the first image is excluded from the main screen of the display 180 to display the enlarged fifth image It is possible to provide an image suitable for user viewing.

On the other hand, when there is a video display enlargement input in a state where an image displayed on a mobile terminal (not shown) is displayed on the video display device 100 by mirroring with a mobile terminal (not shown) Accordingly, it is possible to provide an image suitable for the user viewing by selectively expanding it.

On the other hand, when a pointer based on the pointing signal from the remote control device 200 is displayed and a scaling factor by the scaling factor scaling object displayed in the third image in the sub-screen is selected based on the pointer, the selected scaling factor So that the first image is enlarged, so that user convenience can be increased.

On the other hand, on the basis of the pointer, an area in the third image in the sub-screen is selected, and the selected area is enlarged and displayed on the main screen of the display 180, thereby enhancing user convenience.

According to another embodiment of the present invention, the image display apparatus 100 may include a display 180, and a display controller 180 for displaying the first image when the brightness of the first image is less than the brightness of the first image A controller 170 for controlling the display 180 to display an image in which the first image is not enlarged on the main screen of the display 180 and controlling the display of the reduced image of the first image on the sub- It is possible to provide an image suitable for the user's viewing by enlarging selectively according to the brightness of the image when there is the enlarged image display input during the image display.

Meanwhile, although not shown in the drawing, mirroring by wireless connection may be performed between the mobile terminal (not shown) and the image display device 100 at the time of image enlargement display.

In order to perform mirroring between the image display apparatus 100 and a mobile terminal (not shown), a wireless connection must be established between the image display apparatus 100 and a mobile terminal (not shown) Should be performed.

For example, when the mirroring application of the image display apparatus 100 is selected, a pairing request signal is transmitted from the image display apparatus 100 to a mobile terminal (not shown), and in response, , The image display apparatus 100 can transmit a pairing response signal. The video display apparatus 100 can complete the pairing with the mobile terminal (not shown) and be wirelessly connected based on the pairing response signal.

As another example, when the mirroring application of the mobile terminal (not shown) is selected, a pairing request signal is transmitted from the mobile terminal (not shown) to the video display device 100, And can transmit a pairing response signal to a mobile terminal (not shown). The mobile terminal (not shown) can complete the pairing with the video display device 100 based on the pairing response signal, and can be wirelessly connected.

Meanwhile, at the time of mirroring, the mobile terminal (not shown) transmits the image displayed on the display 180 of the mobile terminal (not shown) to the image display apparatus 100.

Particularly, the mobile terminal (not shown) is provided with a black addition portion (not shown) on the left and right sides of the image displayed on the display 180 of the mobile terminal (not shown) in accordance with the resolution or the aspect ratio of the image display device 100 Images can be added and transmitted.

According to this method, even if the size of the display 180 is large, the contents of the mirrored image transmitted and displayed in the mobile terminal (not shown) may not be readable to the user.

In this case, as described above, the content of the mirrored image transmitted and displayed in the mobile terminal (not shown) can be enlarged and displayed according to the enlarged image input. Particularly, the enlarged mirrored image can be displayed on the main screen, and the reduced mirrored image can be displayed on the sub-screen.

The various operation methods of the image display apparatus 100 will be described in detail with reference to FIG. 6 and the following figures.

On the other hand, the video display device 100 of FIG. 1 can be a monitor, a TV, a tablet PC, or the like.

2 is an example of an internal block diagram of the video display device of FIG.

2, an image display apparatus 100 according to an exemplary embodiment of the present invention includes a broadcast receiving unit 105, an external device interface unit 130, a storage unit 140, a user input interface unit 150, (Not shown), a controller 170, a display 180, and an audio output unit 185.

The broadcast receiving unit 105 may include a tuner unit 110, a demodulating unit 120, a network interface unit 130, and an external device interface unit 135.

The broadcast receiving unit 105 may include only the tuner unit 110, the demodulating unit 120, and the external device interface unit 135, unlike the drawing. That is, the network interface unit 130 may not be included.

The tuner unit 110 selects an RF broadcast signal corresponding to a channel selected by the user or all previously stored channels among RF (Radio Frequency) broadcast signals received through an antenna (not shown). Also, the selected RF broadcast signal is converted into an intermediate frequency signal, a baseband image, or a voice signal.

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF). If the selected RF broadcast signal is an analog broadcast signal, it is converted into an analog baseband image or voice signal (CVBS / SIF). That is, the tuner unit 110 can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner unit 110 can be directly input to the controller 170.

Meanwhile, the tuner unit 110 sequentially selects RF broadcast signals of all broadcast channels stored through a channel memory function among the RF broadcast signals received through the antenna in the present invention, and sequentially selects RF broadcast signals of the intermediate frequency signal, baseband image, . ≪ / RTI >

On the other hand, the tuner unit 110 can include a plurality of tuners in order to receive broadcast signals of a plurality of channels. Alternatively, a single tuner that simultaneously receives broadcast signals of a plurality of channels is also possible.

The demodulator 120 receives the digital IF signal DIF converted by the tuner 110 and performs a demodulation operation.

The demodulation unit 120 may perform demodulation and channel decoding, and then output a stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed.

The stream signal output from the demodulation unit 120 may be input to the controller 170. The control unit 170 performs demultiplexing, video / audio signal processing, and the like, and then outputs an image to the display 180 and outputs audio to the audio output unit 185.

The external device interface unit 130 can transmit or receive data with the connected external device (not shown), for example, the set-top box 50. To this end, the external device interface unit 130 may include an A / V input / output unit (not shown).

The external device interface unit 130 can be connected to an external device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camera, a camcorder, a computer , And may perform an input / output operation with an external device.

The A / V input / output unit can receive video and audio signals from an external device. On the other hand, the wireless communication unit (not shown) can perform short-range wireless communication with other electronic devices.

Through the wireless communication unit (not shown), the external device interface unit 130 can exchange data with an adjacent mobile terminal (not shown). In particular, in the mirroring mode, the external device interface unit 130 can receive device information, application information to be executed, application image, and the like from a mobile terminal (not shown).

The network interface unit 135 provides an interface for connecting the video display device 100 to a wired / wireless network including the Internet network. For example, the network interface unit 135 can receive, via the network, content or data provided by the Internet or a content provider or a network operator.

On the other hand, the network interface unit 135 may include a wireless communication unit (not shown).

The storage unit 140 may store a program for each signal processing and control in the control unit 170 or may store the processed video, audio, or data signals.

In addition, the storage unit 140 may perform a function for temporarily storing video, audio, or data signals input to the external device interface unit 130. [ In addition, the storage unit 140 may store information on a predetermined broadcast channel through a channel memory function such as a channel map.

Although the storage unit 140 of FIG. 2 is provided separately from the control unit 170, the scope of the present invention is not limited thereto. The storage unit 140 may be included in the controller 170.

The user input interface unit 150 transmits a signal input by the user to the control unit 170 or a signal from the control unit 170 to the user.

(Not shown), such as a power key, a channel key, a volume key, and a set value, from the remote control apparatus 200, (Not shown) that senses a user's gesture to the control unit 170 or transmits a signal from the control unit 170 to the control unit 170 It is possible to transmit it to the sensor unit (not shown).

The control unit 170 demultiplexes the input stream or processes the demultiplexed signals through the tuner unit 110 or the demodulation unit 120 or the network interface unit 135 or the external device interface unit 130 , And can generate and output signals for video or audio output.

The video signal processed by the controller 170 may be input to the display 180 and displayed as an image corresponding to the video signal. Also, the image signal processed by the controller 170 may be input to the external output device through the external device interface unit 130.

The audio signal processed by the control unit 170 may be output to the audio output unit 185 as an audio signal. The audio signal processed by the controller 170 may be input to the external output device through the external device interface unit 130. [

Although not shown in FIG. 2, the controller 170 may include a demultiplexer, an image processor, and the like. This will be described later with reference to FIG.

In addition, the control unit 170 can control the overall operation in the video display device 100. [ For example, the control unit 170 may control the tuner unit 110 to control the tuning of the RF broadcast corresponding to the channel selected by the user or the previously stored channel.

In addition, the controller 170 may control the image display apparatus 100 according to a user command or an internal program input through the user input interface unit 150.

Meanwhile, the control unit 170 may control the display 180 to display an image. At this time, the image displayed on the display 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

Meanwhile, the control unit 170 may display a predetermined 2D object in the image displayed on the display 180. [ For example, the object may be at least one of a connected web screen (newspaper, magazine, etc.), EPG (Electronic Program Guide), various menus, widgets, icons, still images, moving images, and text.

On the other hand, the control unit 170 can recognize the position of the user based on the image photographed from the photographing unit (not shown). For example, the distance (z-axis coordinate) between the user and the image display apparatus 100 can be grasped. In addition, the x-axis coordinate and the y-axis coordinate in the display 180 corresponding to the user position can be grasped.

The display 180 converts a video signal, a data signal, an OSD signal, a control signal processed by the control unit 170, a video signal, a data signal, a control signal, and the like received from the external device interface unit 130, .

The display 180 may be a PDP, an LCD, an OLED, a flexible display, or the like, and may also be capable of a 3D display. The three-dimensional display 180 can be divided into a non-eyeglass system and a glasses system.

Meanwhile, the display 180 may be configured as a touch screen and used as an input device in addition to the output device.

The audio output unit 185 receives the signal processed by the control unit 170 and outputs it as a voice.

A photographing unit (not shown) photographs the user. The photographing unit (not shown) may be implemented by a single camera, but the present invention is not limited thereto, and may be implemented by a plurality of cameras. On the other hand, the photographing unit (not shown) may be embedded in the image display device 100 on the upper side of the display 180 or may be disposed separately. The image information photographed by the photographing unit (not shown) may be input to the control unit 170.

The control unit 170 can detect the gesture of the user based on each of the images photographed from the photographing unit (not shown) or the signals sensed from the sensor unit (not shown) or a combination thereof.

The power supply unit 190 supplies power to the entire image display apparatus 100. Particularly, it is possible to supply power to a control unit 170 that can be implemented in the form of a system on chip (SOC), a display 180 for displaying an image, and an audio output unit 185 for audio output. have.

Specifically, the power supply unit 190 may include a converter for converting AC power into DC power and a dc / dc converter for converting the level of the DC power.

The remote control apparatus 200 transmits the user input to the user input interface unit 150. [ To this end, the remote control apparatus 200 can use Bluetooth, RF (radio frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, or the like. Also, the remote control apparatus 200 can receive the video, audio, or data signal output from the user input interface unit 150 and display it or output it by the remote control apparatus 200.

Meanwhile, the video display device 100 may be a digital broadcast receiver capable of receiving a fixed or mobile digital broadcast.

Meanwhile, a block diagram of the image display apparatus 100 shown in FIG. 2 is a block diagram for an embodiment of the present invention. Each component of the block diagram may be integrated, added, or omitted according to the specifications of the image display apparatus 100 actually implemented. That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

3 is an example of an internal block diagram of the control unit of FIG.

The control unit 170 includes a demultiplexing unit 310, an image processing unit 320, a processor 330, an OSD generating unit 340, a mixer 345, A frame rate conversion unit 350, and a formatter 360. [0031] An audio processing unit (not shown), and a data processing unit (not shown).

The demultiplexer 310 demultiplexes the input stream. For example, when an MPEG-2 TS is input, it can be demultiplexed into video, audio, and data signals, respectively. The stream signal input to the demultiplexer 310 may be a stream signal output from the tuner 110 or the demodulator 120 or the external device interface 130.

The image processing unit 320 may perform image processing of the demultiplexed image signal. For this, the image processing unit 320 may include a video decoder 325 and a scaler 335.

The video decoder 325 decodes the demultiplexed video signal and the scaler 335 performs scaling so that the resolution of the decoded video signal can be output from the display 180.

The video decoder 325 can include a decoder of various standards. For example, a 3D image decoder for MPEG-2, H, and H.264 decoders, a color image and a depth image, and a decoder for a multi-view image may be provided.

The processor 330 may control the overall operation in the image display apparatus 100 or in the control unit 170. [ For example, the processor 330 may control the tuner 110 to select a channel selected by the user or an RF broadcast corresponding to a previously stored channel.

In addition, the processor 330 may control the image display apparatus 100 by a user command or an internal program input through the user input interface unit 150. [

In addition, the processor 330 may perform data transfer control with the network interface unit 135 or the external device interface unit 130.

The processor 330 may control operations of the demultiplexing unit 310, the image processing unit 320, the OSD generating unit 340, and the like in the controller 170.

The OSD generation unit 340 generates an OSD signal according to a user input or by itself. For example, based on a user input signal, a signal for displaying various information in a graphic or text form on the screen of the display 180 can be generated. The generated OSD signal may include various data such as a user interface screen of the video display device 100, various menu screens, a widget, and an icon. In addition, the generated OSD signal may include a 2D object or a 3D object.

The OSD generating unit 340 can generate a pointer that can be displayed on the display based on the pointing signal input from the remote control device 200. [ In particular, such a pointer may be generated by a pointing signal processing unit, and the OSD generating unit 240 may include such a pointing signal processing unit (not shown). Of course, a pointing signal processing unit (not shown) may be provided separately from the OSD generating unit 240.

The mixer 345 may mix the OSD signal generated by the OSD generator 340 and the decoded video signal processed by the image processor 320. The mixed video signal is supplied to a frame rate converter 350.

A frame rate converter (FRC) 350 can convert the frame rate of an input image. On the other hand, the frame rate converter 350 can output the frame rate without conversion.

The formatter 360 may arrange the left eye image frame and the right eye image frame of the frame rate-converted 3D image. Then, the left eye glass of the 3D viewing apparatus (not shown) and the synchronization signal Vsync for opening the right eye glass can be output.

On the other hand, the formatter 360 may convert the format of the input video signal into a video signal for display on a display and output the video signal.

In addition, the formatter 360 can change the format of the 3D video signal. For example, in various 3D formats such as Side by Side, Top / Down, Frame Sequential, Interlaced, and Checker Box formats, It can be changed to any one format.

Meanwhile, the formatter 360 may convert the 2D video signal into a 3D video signal. For example, according to a 3D image generation algorithm, an edge or a selectable object is detected in a 2D image signal, and an object or a selectable object according to the detected edge is separated into a 3D image signal and is generated . At this time, the generated 3D image signal can be separated into the left eye image signal L and the right eye image signal R, as described above.

Although not shown in the drawing, it is also possible that a 3D processor (not shown) for 3-dimensional effect signal processing is further disposed after the formatter 360. The 3D processor (not shown) can process the brightness, tint, and color of the image signal to improve the 3D effect. For example, it is possible to perform signal processing such as making the near field clear and the far field blurring. On the other hand, the functions of such a 3D processor can be merged into the formatter 360 or merged into the image processing unit 320. [

Meanwhile, the audio processing unit (not shown) in the control unit 170 can perform the audio processing of the demultiplexed audio signal. To this end, the audio processing unit (not shown) may include various decoders.

In addition, the audio processing unit (not shown) in the control unit 170 can process a base, a treble, a volume control, and the like.

The data processing unit (not shown) in the control unit 170 can perform data processing of the demultiplexed data signal. For example, if the demultiplexed data signal is a coded data signal, it can be decoded. The encoded data signal may be electronic program guide information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel.

Meanwhile, the block diagram of the controller 170 shown in FIG. 3 is a block diagram for an embodiment of the present invention. Each component of the block diagram can be integrated, added, or omitted according to the specifications of the control unit 170 actually implemented.

In particular, the frame rate converting unit 350 and the formatter 360 are not provided in the controller 170, and may be separately provided, or may be separately provided as one module.

FIG. 4 is a diagram showing a control method of the remote control apparatus of FIG. 2. FIG.

4A, it is exemplified that a pointer 205 corresponding to the remote control device 200 is displayed on the display 180. In the example of FIG.

The user can move or rotate the remote control device 200 up and down, left and right (FIG. 4B), and back and forth (FIG. 4C). The pointer 205 displayed on the display 180 of the video display device corresponds to the movement of the remote control device 200. [ As shown in the figure, the remote controller 200 can be referred to as a space remote controller or a 3D pointing device because the pointer 205 is moved and displayed according to the movement in the 3D space.

4B illustrates that when the user moves the remote control device 200 to the left, the pointer 205 displayed on the display 180 of the image display device also shifts to the left corresponding thereto.

Information on the motion of the remote control device 200 sensed through the sensor of the remote control device 200 is transmitted to the image display device. The image display apparatus can calculate the coordinates of the pointer 205 from the information on the motion of the remote control apparatus 200. [ The image display apparatus can display the pointer 205 so as to correspond to the calculated coordinates.

4C illustrates a case where the user moves the remote control device 200 away from the display 180 while pressing a specific button in the remote control device 200. [ Thereby, the selected area in the display 180 corresponding to the pointer 205 can be zoomed in and displayed. Conversely, when the user moves the remote control device 200 close to the display 180, the selection area within the display 180 corresponding to the pointer 205 may be zoomed out and zoomed out. On the other hand, when the remote control device 200 moves away from the display 180, the selection area is zoomed out, and when the remote control device 200 approaches the display 180, the selection area may be zoomed in.

On the other hand, when the specific button in the remote control device 200 is pressed, it is possible to exclude recognizing the up, down, left, and right movement. That is, when the remote control apparatus 200 moves away from or approaches the display 180, it is not recognized that the up, down, left, and right movements are recognized, and only the forward and backward movements are recognized. Only the pointer 205 is moved in accordance with the upward, downward, leftward, and rightward movement of the remote control device 200 in a state where the specific button in the remote control device 200 is not pressed.

On the other hand, the moving speed and moving direction of the pointer 205 may correspond to the moving speed and moving direction of the remote control device 200.

5 is an internal block diagram of the remote control device of Fig.

The remote control device 200 includes a wireless communication unit 425, a user input unit 435, a sensor unit 440, an output unit 450, a power supply unit 460, a storage unit 470, And a control unit 480.

The wireless communication unit 425 transmits / receives a signal to / from any one of the video display devices according to the embodiments of the present invention described above. Of the video display devices according to the embodiments of the present invention, one video display device 100 will be described as an example.

In this embodiment, the remote control apparatus 200 may include an RF module 421 capable of transmitting and receiving signals with the image display apparatus 100 according to the RF communication standard. In addition, the remote control apparatus 200 may include an IR module 423 capable of transmitting and receiving signals to and from the image display apparatus 100 according to the IR communication standard.

In the present embodiment, the remote control device 200 transmits a signal containing information on the motion and the like of the remote control device 200 to the image display device 100 through the RF module 421.

Also, the remote control device 200 can receive the signal transmitted by the video display device 100 through the RF module 421. [ In addition, the remote control device 200 can transmit a command regarding power on / off, channel change, volume change, and the like to the video display device 100 through the IR module 423 as necessary.

The user input unit 435 may include a keypad, a button, a touch pad, or a touch screen. The user can input a command related to the image display apparatus 100 to the remote control apparatus 200 by operating the user input unit 435. [ When the user input unit 435 has a hard key button, the user can input a command related to the image display device 100 to the remote control device 200 through the push operation of the hard key button. When the user input unit 435 includes a touch screen, the user can touch a soft key of the touch screen to input a command related to the image display apparatus 100 to the remote control apparatus 200. [ In addition, the user input unit 435 may include various types of input means such as a scroll key, a jog key, etc., which can be operated by the user, and the present invention is not limited to the scope of the present invention.

The sensor unit 440 may include a gyro sensor 441 or an acceleration sensor 443. The gyro sensor 441 can sense information about the motion of the remote control device 200. [

For example, the gyro sensor 441 can sense information about the operation of the remote control device 200 based on the x, y, and z axes. The acceleration sensor 443 can sense information on the moving speed and the like of the remote control device 200. On the other hand, a distance measuring sensor can be further provided, whereby the distance to the display 180 can be sensed.

The output unit 450 may output an image or a voice signal corresponding to the operation of the user input unit 435 or corresponding to the signal transmitted from the image display apparatus 100. [ The user can recognize whether the user input unit 435 is operated or whether the image display apparatus 100 is controlled through the output unit 450.

For example, the output unit 450 includes an LED module 451 that is turned on when a user input unit 435 is operated or a signal is transmitted / received to / from the video display device 100 through the wireless communication unit 425, a vibration module 453 for outputting sound, an audio output module 455 for outputting sound, or a display module 457 for outputting an image.

The power supply unit 460 supplies power to the remote control device 200. The power supply unit 460 can reduce power waste by interrupting the power supply when the remote controller 200 is not moving for a predetermined period of time. The power supply unit 460 may resume power supply when a predetermined key provided in the remote control device 200 is operated.

The storage unit 470 may store various types of programs, application data, and the like necessary for the control or operation of the remote control apparatus 200. [ If the remote control device 200 wirelessly transmits and receives a signal through the image display device 100 and the RF module 421, the remote control device 200 and the image display device 100 transmit signals through a predetermined frequency band Send and receive. The control unit 480 of the remote control device 200 stores information on the frequency band and the like capable of wirelessly transmitting and receiving signals with the video display device 100 paired with the remote control device 200 in the storage unit 470 Can be referenced.

The control unit 480 controls various items related to the control of the remote control device 200. The control unit 480 transmits a signal corresponding to a predetermined key operation of the user input unit 435 or a signal corresponding to the motion of the remote control device 200 sensed by the sensor unit 440 through the wireless communication unit 425, (100).

The user input interface unit 150 of the image display apparatus 100 includes a wireless communication unit 151 capable of wirelessly transmitting and receiving signals to and from the remote control apparatus 200 and a pointer corresponding to the operation of the remote control apparatus 200. [ And a coordinate value calculation unit 415 that can calculate the coordinate value of the coordinate system.

The user input interface unit 150 can wirelessly transmit and receive signals to and from the remote control device 200 through the RF module 412. Also, the remote control device 200 can receive a signal transmitted through the IR module 413 according to the IR communication standard.

The coordinate value calculator 415 corrects the camera shake or error from the signal corresponding to the operation of the remote control device 200 received via the wireless communication unit 151 and outputs the coordinate value of the pointer 205 to be displayed on the display 170 (x, y) can be calculated.

The transmission signal of the remote control device 200 inputted to the image display device 100 through the user input interface unit 150 is transmitted to the control unit 180 of the image display device 100. [ The control unit 180 can determine the information about the operation of the remote control device 200 and the key operation from the signal transmitted from the remote control device 200 and control the video display device 100 accordingly.

As another example, the remote control device 200 may calculate the pointer coordinate value corresponding to the operation and output it to the user input interface unit 150 of the video display device 100. [ In this case, the user input interface unit 150 of the image display apparatus 100 may transmit information on the received pointer coordinate values to the control unit 180 without any additional camera shake or error correction process.

As another example, the coordinate value calculating unit 415 may be provided in the control unit 170 instead of the user input interface unit 150, unlike the drawing.

FIG. 6 is a flow chart showing an example of an operation method of an image display apparatus according to an embodiment of the present invention, and FIGS. 7A to 11C are views referred to explain the operation method of FIG.

Referring to FIG. 6, the controller 170 of the image display apparatus 100 controls to display an input first image (S610).

The input first image may be a broadcast image, an external input image received from an external device, an image stored in the storage unit, or an image received as a stream through the network interface unit 135.

Next, the control unit 170 of the video display device 100 determines whether there is an image enlargement input (S615), and if so, determines whether or not the luminance of the first image is equal to or higher than the first level (S617 ), And if so, determines whether the first image includes a black area (S619). If not, control is performed to display a second image in which the first image is enlarged on the main screen of the display 180, and a third image in which the first image is reduced is displayed on the sub-screen of the display 180 (S620).

That is, when the luminance of the first image is equal to or higher than the first level and the first image does not include the black region, the controller 170 of the image display apparatus 100 displays the first image Controls to display the enlarged second image, and controls to display a third image in which the first image is reduced on the sub-screen of the display (180).

If the brightness of the first image is lower than the first level in step 617 (S617), the controller 170 of the image display apparatus 100 displays the first image on the main screen of the display 180 It is possible to control the display of the fourth image and to display the third image in which the first image is reduced on the sub-screen (S625).

According to this, it is possible to selectively enlarge the image according to the brightness of the image, thereby providing an image suitable for user viewing.

In particular, when the luminance of the first image is less than the first level and includes the black region, control is performed to display a fourth image on which the first image is not enlarged on the main screen of the display 180, It is possible to provide an image suitable for the user viewing by controlling the display of the third image in which one image is reduced.

If the first image includes a black region in step S619, the control unit 170 of the image display apparatus 100 determines whether the black region in the first image is excluded from the main screen of the display 180 So that the enlarged fifth image is displayed (S630).

That is, when the luminance of the first image is equal to or higher than the first level and the first image includes the black region, the control unit 170 of the image display apparatus 100 displays the first image, It is possible to control to display the enlarged fifth image by excluding the black region.

According to this, in particular, it is possible to provide an image suitable for the user's viewing by enlarging the left and right sides of the image, or the black regions disposed on the upper and lower sides thereof.

For explanation of FIG. 6, the description will be made with reference to FIGS. 7A to 11C.

7A illustrates an image 710 having a black region and text, FIG. 7B illustrates an image 720 having no black region, FIG. 7C illustrates an image 720 having more black regions than FIG. 7D illustrates an image 740 with a black region and text similar to FIG. 7C, FIG. 7E illustrates an image 750 with a black region without a black region, and FIG. 7F And an image 760 having black regions on the left and right sides.

Figs. 8A to 8F are diagrams illustrating enlargement of each image of Figs. 7A to 7F when the image enlarging key 201 of the remote control device 200 of Fig. 1 is operated and there is an image enlarging input .

FIGS. 8A to 8F illustrate enlargement of an image in enlargement of an area having a black area smaller than that of a black area.

8A illustrates that an image 711 enlarged around the upper area is displayed on the main screen since there is no black area in the upper area as compared with the lower area of the image 710 of FIG. 7A. At this time, the image 710b in which the image 710 is reduced can be displayed in the lower right sub-screen.

When the enlarged image 711 is displayed as shown in FIG. 8A in accordance with the enlarged image input, there is a possibility that the visibility of the user is deteriorated, for example, the text in the image is partially cut off.

Next, FIG. 8B shows an image 721 corresponding to the image 720 in FIG. 7B is displayed on the main screen in accordance with the image enlargement input, and a video 720b ) Is displayed.

Next, FIG. 8C shows that, in accordance with the image enlargement input, since there is no black region in the upper region of the image 730 in FIG. 7C, the image 731 enlarged around the upper region is displayed on the main screen For example. At this time, the image 730b in which the image 730 is reduced can be displayed in the lower right sub-screen.

Next, FIG. 8D shows that, since the black region does not exist in the upper region as compared with the lower region of the image 740 in FIG. 7D, the image 741 enlarged around the upper region is displayed on the main screen For example. At this time, the image 740b in which the image 740 is reduced can be displayed in the lower right sub-screen.

8E shows an image 751 corresponding to the image 750 of FIG. 7E displayed on the main screen in accordance with the image enlargement input, and an image 750b ) Is displayed.

Next, FIG. 8F illustrates that, in accordance with the image enlargement input, the left and right bank regions of the image 760 of FIG. 7F are enhanced and the image 761 enlarged around the center region is displayed on the main screen . At this time, the image 760b in which the image 760 is reduced can be displayed on the lower right side sub-screen.

As shown in FIGS. 8A to 8F, if image enlargement is applied to an area having no black area, a part of text is enlarged and enlarged, as shown in FIGS. 8A, 8C and 8D.

Accordingly, the present invention proposes a method of selectively enlarging an image in accordance with the brightness of an image while applying image enlargement to an area without a black area at the time of enlarging the image.

6, when the brightness of the image is equal to or higher than the first level, the control unit 170 of the image display apparatus 100 displays the image enlarged on the main screen as in step 620 (S620) If it is less than the first level, it is possible to control to display an image that is not enlarged on the main screen as in step 625 (S625).

On the other hand, the control unit 170 of the image display apparatus 100 should not include the black region even if the brightness of the image is equal to or higher than the first level. In this case, as in operation 620 (S620) If the black area is included, the black area is removed from the main screen and the enlarged image is displayed as in step 630 (S630).

FIG. 9A illustrates a graph showing the relationship between the luminance of the image and the luminance level, and the above-described first level may correspond to Ba.

That is, when the average brightness APL of the image frame is equal to or larger than Ba, the controller 170 of the image display apparatus 100 displays the enlarged image on the main screen as in step 620 (S620) It is possible to control to display an image that is not enlarged on the main screen as in step 625 (S625).

FIG. 9A illustrates a graph showing the relationship between brightness and brightness level of an image, and the above-described first level may correspond to B2. On the other hand, whether or not the black region is included can be distinguished by using B1.

That is, when the average luminance APL of the image frame is equal to or larger than B2, the controller 170 of the image display apparatus 100 displays the enlarged image on the main screen as in step 620 (S620) If the average luminance APL of the main luminance APL is less than B1, it is possible to control to display an image that is not enlarged on the main screen as in step 625 (S625).

On the other hand, when the average luminance APL of the image frame is equal to or larger than B1, including the black area and less than B2, the control unit 170 of the video display device 100 displays the average brightness APL on the main screen as in step 630 (S630) The black region is removed and the enlarged image can be controlled to be displayed.

10A to 10F illustrate that image enlargement is selectively performed according to the brightness of an image, as shown in FIG.

Particularly, Figs. 10A to 10F are diagrams for explaining a case where the image enlarging key 201 of the remote control device 200 of Fig. 1 operates to enlarge each image of Figs. 7A to 7F selectively Fig.

7A, if the brightness of the image 710 is less than the first level, the control unit 170 of the image display apparatus 100 determines whether the brightness of the image 710 is less than the first level, It is controlled to display the image 810 in which the image 710 is not enlarged on the main screen Ma of the display 180 and the image 710b in which the image 710 is reduced is displayed on the sub- Can be controlled.

As described above, in spite of the image enlargement input, by not enlarging the image, the visibility of the image of the user can be improved, for example, the text displayed in the image 810 is not truncated.

7B, the control unit 170 of the video display device 100 displays, on the basis of the image enlargement input, the image 720 having no black region and whose brightness is equal to or higher than the first level, It is possible to control the display unit 720 to display the enlarged image 820 on the display screen Ma and to display the reduced image 720b on the sub screen SU of the display 180 have.

Thus, the enlarged image can be displayed as desired by the user.

On the other hand, within the reduced image 720b, a scaling ratio adjustment object 708 and a scaling bar 709 for adjusting the scaling factor of the image 820 displayed on the main screen Ma can be displayed.

At this time, the image display apparatus 100 can move the scaling magnification adjustment object 708 in the scaling bar 709 based on the pointing signal of the remote control device 200, and the scaling magnification adjustment object 708 , It is possible to enlarge and display the image displayed on the main screen with the corresponding scaling factor.

7C, when the image 730 includes mostly a black region and the luminance of the image 730 is less than the first level, the control unit 170 of the image display apparatus 100 displays the image as shown in FIG. The image 730 is displayed on the main screen Mc of the display 180 so that the image 730 is displayed on the sub screen SU and the reduced image 730b is displayed on the sub screen SU Can be controlled.

In this manner, even if the image enlargement input is not performed, the image displayed on the image 830 is not truncated by not enlarging the image, thereby improving the visibility of the user.

7D, the control unit 170 of the image display apparatus 100 determines whether the brightness of the image 740 is lower than the first level and the brightness of the image 740 is less than the first level, It is possible to display an image 840 in which the image 740 is not enlarged on the main screen Md of the display 180 and display the reduced image 740b on the sub- Can be controlled.

As described above, in spite of the image enlargement input, by not enlarging the image, the text displayed in the image 840 is not truncated, so that the visibility of the user can be improved.

7E, the control unit 170 of the video display device 100 displays, on the basis of the image enlargement input, the image 750 having no black region and having the brightness of the first level or higher, It is possible to control so as to display the image 850 in which the image 750 is enlarged on the display screen Ma and control to display the reduced image 720e on the sub screen SU of the display 180 have.

Thus, the enlarged image can be displayed as desired by the user.

7F, when the brightness of the image 740 is equal to or higher than the first level and includes the black region, the control unit 170 of the image display apparatus 100 displays, as shown in FIG. 10F, The left and right black regions of the image 760 are removed from the main screen Md of the display 180 to display the enlarged image 860 and the image 760 is displayed on the sub- So that the displayed image 760b can be displayed. At this time, the reduced image 760b may include the black region as it is.

As described above, according to the image enlargement input, since some black regions are removed and enlarged and displayed, only a desired region of the user can be confirmed, so that the visibility of the user can be improved.

10A to 10F, the source of the selectively enlarged image on the main screen may be a mirroring image received from a mobile terminal (not shown), as described with reference to FIG.

In other words, the images 710 to 760 in FIGS. 7A to 7F may be mirrored images received from a mobile terminal (not shown). In accordance with the image enlargement input of the remote controller 200, , And an enlarged image can be selectively displayed on the main screen.

On the other hand, the control unit 170 of the video display device 100 controls to display a pointer based on the pointing signal from the remote control device 200, and displays the pointer in the third video in the sub- When the scaling factor by the scaling factor adjustment object is selected, the first image can be enlarged by the selected scaling factor.

On the other hand, the control unit 170 of the video display device 100 controls to display a pointer based on the pointing signal from the remote control device 200, and, based on the pointer, And the selected area is enlarged and displayed on the main screen Ma of the display 180. [

On the other hand, when the brightness of the first image is equal to or higher than the first level and the first image includes the black region, the control unit 170 of the image display apparatus 100 displays the main image Ma in the main screen Ma of the display 180 It is possible to control to display the enlarged fifth image by excluding the black region in one image.

The control unit 170 of the video display device 100 controls the display of the fifth image during the first period. When a sixth image including a black region is input after the first period, And the sixth image is scaled and displayed based on the scale factor of the fifth image. This will be described with reference to Figs. 11A to 11F.

11A illustrates that an image 1110 including black regions Bx and By on both sides is displayed at a first time point.

Next, FIG. 11B illustrates that an image 1120 including black regions Bx and By on both sides is displayed at the second time point.

Next, FIG. 11C illustrates that at the third time point, the black region Bx, By is removed on both sides, and the image 1130 on which the horizontal scaling is performed is displayed. That is, an enlarged image enlarged in the horizontal direction is displayed.

Thereafter, the controller 170 of the video display device 100 can control to remove the black regions on both sides and display an enlarged image with the same scaling factor as the image enlarged in Fig. 11C. Thus, black area removal and image enlargement can be performed simply and quickly.

Meanwhile, the operation method of the image display apparatus of the present invention can be implemented as a code that can be read by a processor on a recording medium readable by a processor included in the image display apparatus. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the recording medium that can be read by the processor include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet . In addition, the processor-readable recording medium may be distributed over network-connected computer systems so that code readable by the processor in a distributed fashion can be stored and executed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

Claims (10)

display;
In a state in which there is an image enlargement input during the first video display,
Controls to display a second image in which the first image is enlarged on a main screen of the display when the brightness of the first image is equal to or higher than a first level and the first image does not include a black area, Controls the display unit to display a third image in which the first image is reduced,
And controls the display unit to display a fourth image in which the first image is not enlarged on the main screen of the display when the brightness of the first image is less than the first level, And a control unit for controlling the display unit to display an image. The method according to claim 1,
Wherein,
Controlling the display unit to display a fourth image in which the first image is not enlarged on the main screen of the display when the brightness of the first image is less than the first level and includes the black area, And controls to display a third image in which the first image is reduced. The method according to claim 1,
Wherein,
When the brightness of the first image is equal to or higher than a first level and the first image includes a black region, a black region in the first image is excluded from the main screen of the display, And the video display device. The method of claim 3,
Wherein,
And controls to display the third image in which the first image is reduced on the sub-screen of the display when the fifth image is displayed. The method of claim 3,
Wherein,
And controls the fifth image to be displayed during the first interval,
A black region of the sixth image is removed when the sixth image including the black region is input after the first period and the sixth image is scaled and displayed based on the scale factor of the fifth image Wherein the control unit controls the display unit. The method according to claim 1,
And an interface unit for exchanging data with the mobile terminal,
Wherein the first image includes a mirroring image received from the mobile terminal. The method according to claim 6,
And a user input interface unit for receiving a signal from the remote control device,
Wherein,
When there is the image enlargement input from the remote control device,
Controls to display a second image in which the first image is enlarged on a main screen of the display when the brightness of the first image is equal to or higher than a first level and the first image does not include a black area, Controls the display unit to display a third image in which the first image is reduced,
And controls the display unit to display a fourth image in which the first image is not enlarged on the main screen of the display when the brightness of the first image is less than the first level, And controls the display unit to display an image. 8. The method of claim 7,
Wherein,
Controls to display a pointer based on a pointing signal from the remote control device,
And controls the magnification of the first image by the selected scaling factor when a scaling factor by the scaling factor adjustment object displayed in the third image in the sub-screen is selected based on the pointer. Video display device. 8. The method of claim 7,
Wherein,
Controls to display a pointer based on a pointing signal from the remote control device,
Selects an area in the third image in the sub-screen based on the pointer, and enlarges the selected area to be displayed on the main screen of the display. display;
In a state in which there is an image enlargement input during the first video display,
And controlling the display unit to display an image in which the first image is not enlarged on the main screen of the display when the brightness of the first image is less than the brightness of the first image and the black image is included in the first image, And controlling the display unit to display the reduced image.

Images