KR101638959B1 - Display mode changing method, and display apparatus and 3D image providing system using the same - Google Patents

Abstract

Disclosed is a method for switching an output mode, a display device using the method, and a 3D image providing system. The method for switching between the 3D image output mode and the 2D image output mode includes receiving state information from the shutter glass and displaying a message for switching the output mode or switching the output mode based on the state information. Thus, the image is provided in an output mode in which the user's intention to view the 3D image is considered.

3D image, shutter glass

Description

[0001] The present invention relates to a display mode switching method and a 3D image providing system using the display mode switching method,

More particularly, the present invention relates to a method for switching between a 3D output mode and a 2D output mode, a display device using the same, and a 3D image providing system.

3D stereoscopic image technology has various applications such as information communication, broadcast, medical, education and training, military, game, animation, virtual reality, CAD, industrial technology, and the next generation 3D stereoscopic multimedia It can be said that it is core technology of information communication.

Generally, the three-dimensional sensation perceived by a person depends on the degree of thickness change of the lens depending on the position of the object to be observed, the angular difference between both eyes and the object, the difference in position and shape of the object on the left and right eyes, Time difference, and various psychological and memory effects.

Among them, binocular disparity, which is caused by the fact that two eyes of a person are located about 6 to 7 cm away from each other in the horizontal direction, is the most important factor of the stereoscopic effect. In other words, the binocular parallax is used to look at the angular difference of the subject. Due to this difference, the images coming into each eye have different phases. When these two images are transmitted to the brain through the retina, It is possible to feel the original three-dimensional stereoscopic image by precisely fusing each other.

The stereoscopic image display device is classified into a spectacle type using special glasses and a non-aniseed type using no special glasses. The spectrophotometer is a color filter system that separates images using a color filter having a complementary color relationship, a polarizing filter system that separates images of the left eye and the right eye using a light blocking effect by a combination of orthogonal polarizing elements, There is a shutter glass system which can sense a stereoscopic effect by alternately blocking the left and right eyes in response to a synchronizing signal for projecting a video signal on a screen.

Among them, the shutter glass method is a display method using the parallax of both eyes, and it synchronizes the on-off operation of the display device and the on / off of the left and right glasses so that images observed at different angles can recognize the spatial sensation due to the brain action Method.

On the other hand, the user can change various setting items for the stereoscopic image to smoothly view the stereoscopic image. However, in the conventional stereoscopic image setting, the user must manually operate the menu, which is a considerable hassle for the user.

Accordingly, it is required to actively consider the viewing intention of the user and search for a method for converting the output mode for the 3D image according to the viewing intention of the user.

It is an object of the present invention to provide an output mode switching method in which an output mode for a 3D image is automatically switched and a display device and a 3D image providing system using the same, .

According to an aspect of the present invention, there is provided a method for switching between a 3D (2-Dimension) image output mode and a 3D (3-Dimension) image output mode by receiving status information on the shutter glass from a shutter glass ; And switching the output mode or displaying a message for switching the output mode based on the status information.

Here, the status information may be information regarding at least one of a power ON / OFF state of the shutter glass, a battery charging state of the shutter glass, and an open / close state of the shutter glass.

The switching or displaying step may automatically switch the 3D image output mode to the 2D image output mode when state information regarding the power-off state of the shutter glass is received during the 3D image output mode.

The switching or displaying step may automatically switch the 2D image output mode to the 3D image output mode when the status information on the power ON state of the shutter glass is received during the 2D image output mode.

The switching or displaying step may display a message for requesting power-on of the shutter glass when the state information regarding the power-off state of the shutter glass is received during the 3D image output mode.

Further, in the method of switching an output mode according to an embodiment of the present invention, when state information related to the power ON state of the shutter glass is received after the state information regarding the power OFF state of the shutter glass is received, And terminating the display of the display screen.

If the state information regarding the power ON state of the shutter glass is received during the 2D image output mode, the switching or displaying step may display a message asking whether to switch to the 3D image output mode .

Also, the shutter glass may transmit the status information at a predetermined time interval or may transmit the status information when a request for transmission of the status information is received.

The 3D image output mode is a mode in which a left eye image and a right eye image constituting the 3D image are alternately displayed on the entire screen. The 2D image output mode is a mode in which the left eye image and the right eye image are displayed on the screen And may be a mode in which the display is divided and displayed.

According to another aspect of the present invention, there is provided a display device operating in a 3D (3-Dimension) image output mode or a 2D (2-Dimension) image output mode according to an embodiment of the present invention, A communication interface for receiving status information; And a controller for switching the output mode or displaying a message for switching the output mode based on the status information.

Here, the status information may be information regarding at least one of a power ON / OFF state of the shutter glass, a battery charging state of the shutter glass, and an open / close state of the shutter glass.

The controller may automatically switch the 3D image output mode to the 2D image output mode when state information regarding the power-off state of the shutter glass is received during the 3D image output mode.

The controller may automatically switch the 2D image output mode to the 3D image output mode when the status information regarding the power ON state of the shutter glass is received during the 2D image output mode.

The control unit may display a message for requesting power-on of the shutter glass when the status information regarding the power-off state of the shutter glass is received during the 3D image output mode.

The control unit may terminate the display of the message when the status information regarding the power ON state of the shutter glass is received after the status information related to the power OFF state of the shutter glass is received.

The control unit may display a message asking whether to switch to the 3D image output mode when status information on the power ON state of the shutter glass is received during the 2D image output mode.

Also, the shutter glass may transmit the status information at a predetermined time interval, or may transmit the status information when a transmission request for the status information is received.

The 3D image output mode is a mode in which a left eye image and a right eye image constituting the 3D image are alternately displayed on the entire screen. The 2D image output mode is a mode in which the left eye image and the right eye image are displayed on the screen And may be a mode in which the display is divided and displayed.

According to another aspect of the present invention, there is provided a system for providing 3D images, the system including: a main body for opening / closing a left eyeglass and a right eye glass alternately based on a synchronization signal received from the outside, To the outside; And a 3D (3-Dimension) image output mode or a 2D (2-Dimension) image output mode, and receives the status information and switches the output mode based on the status information, And a display device for displaying the image.

Thus, the image is provided in an output mode in which the user's intention to view the 3D image is considered.

Hereinafter, the present invention will be described in detail with reference to the drawings. In particular, with reference to FIG. 1 to FIG. 4, a description will be given of an operation principle and a configuration of a 3D (3-Dimension) image providing system according to an embodiment of the present invention. Referring to FIGS. 5A to 5C, The following describes the process for processing. The screen switching process for the 3D image will be described with reference to FIGS. 6 and 7. The operation flow for switching the output mode will be described with reference to FIG. The configuration according to other embodiments will be described with reference to Figs. 9 and 10. Fig.

≪ Operation principle and constitution of 3D image providing system >

1 is a diagram illustrating a 3D image providing system according to an embodiment of the present invention. 3, the 3D image providing system includes a camera 100 for generating a 3D image, a TV 200 for displaying a 3D image on a screen, and a shutter glass 300 for viewing a 3D image.

The camera 100 is a type of photographing device for generating a 3D image and generates a left eye image photographed for the purpose of providing the user's left eye and a right eye image photographed for the purpose of providing the user's right eye. That is, the 3D image is composed of the left eye image and the right eye image, and the left eye image and the right eye image are provided alternately to the left and right eyes of the user, respectively.

For this purpose, the camera 100 is composed of a left eye camera for generating a left eye image and a right eye camera for generating a right eye image, and an interval between the left eye camera and the right eye camera is considered from a separation distance between two eyes of a person.

The camera 100 transmits the photographed left eye image and the right eye image to the TV 200. In particular, the left eye image and the right eye image transmitted from the camera 100 to the TV 200 are transmitted in a format composed of only one of the left eye image and the right eye image in one frame, or the left eye image and the right eye image May be transmitted in a format configured to include all of them.

Hereinafter, the format of a 3D image transmitted to the TV 200 will be specifically described with reference to FIGS. 2A to 2F.

2A to 2F are views for explaining the format of a 3D image. In FIGS. 2A to 2F, the left eye image portion is displayed in white and the right eye image portion is displayed in black for convenience of explanation.

2A is a diagram illustrating a format of a 3D image according to a general frame sequence scheme. In the case of the frame sequence method, the format of the 3D image is a format in which one left eye image or one right eye image is inserted in one frame.

In this format, a 3D image having a resolution of 1920 * 1080 is converted into a frame including a left eye image L1 captured by a left eye camera, a right eye image R1 captured by a right eye camera, Frame containing the left eye image L2 taken by the camera -> frame containing the right eye image R2 taken by the right eye camera-> '.

FIG. 2B is a diagram illustrating a format of a 3D image according to a butt-up method. The bottom-up method is also called a vertical division method. In this case, the format of the 3D image is a format including both the left eye image and the right eye image in one frame. In particular, in the 3D image format according to the bottom-up method, the left eye image and the right eye image are divided into upper and lower parts, and the left eye image is provided on the upper side and the right eye image is provided on the lower side.

For this, the left eye image and the right eye image photographed by the camera 100 are scaled down in the vertical direction and converted into resolutions of 1920 * 540, respectively. Then, the reduced left eye image and the right eye image are converted into a 1920 * So that one frame is formed and transmitted to the TV 200.

In this format, a 3D image having a resolution of 1920 * 1080 is referred to as a frame including a left eye image L1 (image) photographed by a left eye camera and a right eye image R1 (image) photographed by a right eye camera. A frame containing the left eye image L2 (upper) photographed by the left eye camera and the right eye image R2 (lower) photographed by the right eye camera -> ... '.

2C is a diagram illustrating a format of a 3D image according to a side by side scheme. In the case of the side-by-side method, the format of the 3D image is a format including both the left eye image and the right eye image in one frame. Particularly, in the 3D image format according to the side-by-side method, the left eye image and the right eye image are divided into right and left, the left eye image is provided on the left side, and the right eye image is provided on the right side.

For this, the left eye image and the right eye image photographed by the camera 100 are reduced scaled in the left and right direction, respectively, and converted to a resolution of 960 * 1080, and then the left and right eye images are reduced So that one frame is formed and transmitted to the TV 200.

In this format, a 3D image having a resolution of 1920 * 1080 is divided into a left eye image L1 (left) photographed by the left eye camera and a right eye image R1 (right eye) photographed by the right eye camera. A frame including a left eye image L2 (left) photographed by the left eye camera and a right eye image R2 (right eye) photographed by the right eye camera-> '.

2D is a diagram illustrating a format of a 3D image according to a horizontal interleaving method. In the case of the horizontal interleave method, the format of the 3D image is a format including both the left eye image and the right eye image in one frame. In particular, the format of the 3D image according to the horizontal interleave method is a format in which the left eye image and the right eye image are alternately arranged in a row unit.

For this, the left eye image and the right eye image photographed by the camera 100 are scaled down in the vertical direction and converted into resolutions of 1920 * 540, respectively. Thereafter, the converted left eye image and the converted right eye image are converted into odd Alternatively, only one of the odd rows of the left eye image is extracted and only the image of the even-numbered row of the right eye image is extracted, and the image of odd rows and the image of the even rows May be combined to form a single frame.

For example, in the case of the format according to the above (1), the 3D image is the first row of the left eye image L1 captured by the left eye camera, the first row of the right eye image R1 captured by the right eye camera A second row of the left eye image L1 photographed by the left eye camera, a second row of the right eye image R1 photographed by the right eye image camera, 'Constitute one frame.

In the next frame, the first row of the left eye image L2 photographed by the left eye camera, the first row of the right eye image R2 photographed by the right eye camera, the left eye image L2 The second row of the right eye image R2 taken by the right eye image camera, '.

2E is a diagram illustrating a format of a 3D image according to a vertical interleave method. In the case of the vertical interleave method, the format of the 3D image is a format including both the left eye image and the right eye image in one frame. In particular, the format of the 3D image according to the vertical interleave method is a format in which the left eye image and the right eye image are alternately arranged in units of columns.

To this end, the left eye image and the right eye image photographed by the camera 100 are scaled down in the left and right directions, respectively, to be converted into a resolution of 960 * 1080, and then the converted left eye image and the converted right eye image are converted into odd Alternatively, only one of the odd rows of the left eye image is extracted and only the image of the even-numbered row of the right eye image is extracted, and the image of odd rows and the image of the even rows May be combined to form a single frame.

For example, in the case of the format according to the above (1), the 3D image is a first column of the left eye image L1 captured by the left eye camera, a first column of the right eye image R1 captured by the right eye camera The second row of the left eye image L1 photographed by the left eye camera, and the second row of the right eye image R1 photographed by the right eye image camera. 'Constitute one frame.

In the next frame, the first column of the left eye image L2 captured by the left eye camera, the first column of the right eye image R2 captured by the right eye camera, the left eye image L2 ), The second row of the right eye image (R2) taken by the right eye image camera, '.

FIG. 2F is a view showing a format of a 3D image according to a checkerboard method. In the case of the checkerboard method, the format of the 3D image is a format including both the left eye image and the right eye image in one frame. In particular, the format of the 3D image according to the checkerboard method is a format in which the left eye image and the right eye image are alternately arranged in pixel units or pixel group units.

For this purpose, the left eye image and the right eye image captured by the camera 100 are extracted on a pixel-by-pixel or pixel-by-pixel basis, and are alternately arranged in the pixels or pixel groups constituting each frame.

For example, in the case of the 3D image format according to the checkerboard method, the 3D image is composed of a first row first column of the left eye image L1 photographed by the left eye camera, a first row first column of the right eye image A first row and a third column of a left eye image L1 taken by a left eye camera, a first row and a fourth column of a right eye image R1 taken by a right eye camera, 'Constitute one frame.

In the next frame, the first row first column of the left eye image L2 captured by the left eye camera, the first row second column of the right eye image R2 captured by the right eye camera, The first row and the third column of the captured left eye image L2, the first row and the fourth column of the right eye image R2 captured by the right eye camera, '.

Referring back to FIG. 1, the camera 100 determines one format of the above-described formats in advance and transmits the 3D image to the TV 200 according to the determined format.

The TV 200 is a type of display device and receives a 3D image received from a photographing device such as the camera 100 or a 3D image transmitted from a transmitting station after being edited / processed in a broadcasting station by a camera 100 , Processes the received 3D image and displays it on the screen. In particular, the TV 200 refers to the format of the 3D image, processes the left eye image and the right eye image, and displays the processed left eye image and the right eye image on a time-division basis and displayed alternately.

In addition, the TV 200 generates a synchronization signal synchronized with a timing at which the left eye image and the right eye image are displayed in a time-division manner, and transmits the generated synchronization signal to the shutter glass 300.

For the description of the specific configuration of the TV 200, FIG. 3 will be referred to. 3 is a block diagram of a TV 200 according to an embodiment of the present invention.

The TV 200 according to the present embodiment includes an image receiving unit 210, an image processing unit 220, an image output unit 230, a control unit 240, a GUI (Graphic User Interface) A storage unit 260, a user command receiving unit 270, an IR transmitting unit 280, and a communication interface 190.

The image receiving unit 210 receives and demodulates a broadcast received from a broadcasting station or satellite via a wired or wireless network. The image receiving unit 210 is connected to an external device such as the camera 100 and receives 3D images from an external device. External devices can be connected wirelessly or wired via interfaces such as S-Video, Component, Composite, D-Sub, DVI, and HDMI.

As described above, the 3D image is an image composed of at least one frame, and includes a left eye image and a right eye image in one image frame, or each frame is composed of a left eye image or a right eye image. That is, the 3D image is an image generated according to one of the formats shown in FIG.

Accordingly, the 3D image received by the image receiving unit 210 may be in various formats. In particular, the 3D image received by the image receiving unit 210 may be in various formats, such as a general frame sequence method, a bottom-up method, a side by side method, a horizontal interleaving method, a vertical interleaving method, And can be in a format according to one.

The image receiving unit 210 transmits the received 3D image to the image processing unit 220.

The image processing unit 220 performs processing such as video decoding, format analysis, video scaling, and the like on the 3D image received by the image receiving unit 210, and GUI addition.

In particular, the image processing unit 220 generates a left eye image and a right eye image corresponding to a size of a screen (1920 * 1080) using the format of the 3D image input to the image receiving unit 210, respectively.

That is, when the format of the 3D image is a format according to the bottom-up method, the side by side method, the horizontal interleave method, the vertical interleave method, or the checkerboard method, the image processing part 220 calculates, And extracts the left and right eye images, respectively, and enlarges or scales or interpolates the extracted left and right eye images to generate a left eye image and a right eye image for providing to the user, respectively.

If the 3D image format is a general frame sequence scheme, the image processing unit 220 prepares to extract the left eye image or the right eye image from each frame and provide it to the user.

On the other hand, information on the format of the input 3D image may or may not be included in the 3D image signal.

For example, when information on the format of the input 3D image is included in the 3D image signal, the image processing unit 220 extracts information on the format by analyzing the 3D image, And processes the image. On the other hand, when the information on the format of the input 3D image is not included in the 3D image signal, the image processing unit 220 processes the received 3D image according to the format input from the user, And processes the image.

In addition, the image processing unit 220 allows the GUI received from the GUI generating unit 250 to be described later to be added to the left eye image, the right eye image, or both.

The image processing unit 220 time-divides the extracted left eye image and right eye image and transmits them to the image output unit 230 in an alternate manner. That is, the image processing unit 220 generates the left eye image L1, the right eye image R1, the left eye image L2, the right eye image R2, And transmits the left eye image and the right eye image to the image output unit 230 in a temporal order.

The image output unit 230 alternately outputs the left eye image and the right eye image, which are output from the image processing unit 220, to the user.

The GUI generation unit 250 generates a GUI to be displayed on the display. The GUI generated by the GUI generating unit 250 is applied to the image processing unit 220 and added to both the left eye image, the right eye image, or both to be displayed on the display.

The storage unit 260 is a storage medium storing various programs necessary for operating the TV 200, and may be implemented as a memory, a hard disk drive (HDD), or the like.

The user command receiving unit 270 transmits a user command received from an input means such as a remote controller to the control unit 240.

The IR transmitting unit 280 generates a synchronizing signal synchronized with the alternately output left and right eye images, and transmits the generated synchronizing signal to the shutter glass 300 in an infrared form. This is because the shutter glass 300 is alternately opened and closed through synchronization between the TV 200 and the shutter glass 300 so that the left eye image is displayed on the image output unit 230 at the left eye open timing of the shutter glass 300 And the right eye image is displayed on the image output 230 at the right eye opening timing of the shutter glass 300. [

The communication interface 190 is used for communication with the shutter glass 300 to receive status information on the shutter glass 300. The state information may be information on whether or not the shutter glass 300 is in a state in which the shutter glass 300 is worn by the user, information on the state of charge of the shutter glass 300, and the like.

More specifically, the information on whether or not the user is wearing the shutter glass 300 is determined by whether or not a switch provided on the shutter glass 300 is turned ON and power is supplied to each component constituting the shutter glass 300 Information about whether or not it is.

In this manner, the communication interface 190 receives the status information on the shutter glass 300 and transmits the received status information to the control unit 140.

The control unit 240 controls the overall operation of the TV 200 according to a user command received from the user command receiving unit 270.

In particular, the control unit 240 controls the image receiving unit 210 and the image processing unit 220 to receive a 3D image, separate the received 3D image into a left eye image and a right eye image, To be scaled or interpolated to a size that can be displayed on one screen.

The control unit 240 controls the GUI generating unit 250 to generate a GUI corresponding to the user command received from the user command receiving unit 270 and controls the IR transmitting unit 280 to generate a left eye image and a left eye image, So that a synchronization signal synchronized with the output timing of the right eye image is generated and transmitted.

In addition, the control unit 240 displays a 3D image corresponding to the state information on the screen based on the state information of the shutter glass 300 received via the communication interface 290, and generates a GUI corresponding to the state information And controls the image processing unit 120 and the GUI generating unit 150. A detailed description thereof will be given later.

On the other hand, the shutter glass 300 alternately opens and closes the left eye glass and the right eye glass in accordance with the synchronization signal received from the TV 200, so that the user can view the left eye image and the right eye image through the left and right eyes, respectively. Hereinafter, a specific configuration of the shutter glass 300 will be described with reference to FIG.

4 is a block diagram of a shutter glass 300 according to an embodiment of the present invention. The shutter glass 300 includes an IR receiving unit 310, a control unit 320, a glass driving unit 330, a glass unit 340, a power supply unit 370, and a communication interface 380.

The IR receiving unit 310 receives the synchronization signal for the 3D image from the IR transmitting unit 280 of the TV 200 connected by wire or wirelessly. In particular, the IR transmitting unit 280 emits a synchronizing signal using infrared rays having a directivity, and the IR receiving unit 310 receives a synchronizing signal from the emitted infrared rays.

For example, the synchronization signal transmitted from the IR transmitter 280 to the IR receiver 310 may be a signal that is alternated between a high level and a low level at a predetermined time interval, The left eye image is transmitted in the time, and the right eye image is transmitted in the low level time.

The IR receiving unit 310 transmits the synchronizing signal received from the IR transmitting unit 280 to the control unit 320.

The control unit 320 controls operations of the shutter glass 300. In particular, the control unit 320 generates a control signal based on the synchronization signal received by the IR receiving unit 310, and transmits the generated control signal to the glass driving unit 330 to control the glass driving unit 330. In particular, the control unit 320 controls the glass driving unit 330 so that a driving signal for driving the glass unit 340 is generated in the glass driving unit 330, based on the synchronization signal.

The glass driving unit 330 generates a driving signal based on the control signal received from the control unit 320. [ In particular, since the glass portion 340 to be described later is constituted by the left eye glass 350 and the right eye glass 360, the glass driver 330 drives the left eye lens 350 to drive the left eye lens 350 and the right eye glass 360, Eye driving signals to the left eye glass 350 and transmits the right eye driving signals to the right eye glass 360. [

The glass part 340 is constituted by a left eye glass 350 and a right eye glass 360 as described above and opens and closes each glass in accordance with a driving signal received from the glass driving part 330.

The power supply unit 370 allows power to be supplied to each component constituting the shutter glass 300 when the shutter glass 300 is turned on through a switch (not shown) provided in the shutter glass 300 or the like.

The communication interface 380 is a connection path for communicating with the TV 200 and is used for the purpose of transmitting status information about the shutter glass 300 to the TV 200. [ In particular, the communication interface 380 transmits to the TV 200 status information on whether the shutter glass 300 is ON or OFF.

This status information may be transmitted at a predetermined time interval between the TV 200 and the shutter glass 300 or when there is a request for status information transmission from the TV 200. [

≪ Processing process for 3D image >

Hereinafter, a processing procedure for a 3D image will be described with reference to FIGS. 5A to 5C. 5A to 5C are views for explaining a processing method according to the format of a 3D image.

5A shows a method of displaying a 3D image on a screen when a 3D image is received according to a general frame sequence method.

As shown, the format of the 3D image according to the frame sequence scheme is a format in which one left eye image or one right eye image is inserted in one frame. Accordingly, the 3D image is a frame including the left eye image L1 captured by the left eye camera, a frame including the right eye image R1 captured by the right eye camera, a frame containing the left eye image L2 captured by the left eye camera, -> Frames containing the right eye image R2 taken by the right eye camera -> ... ', And they are displayed on the screen in the inputted order.

5B shows a method of displaying a 3D image on a screen when the 3D image is received according to the side by side method.

As shown, the format of the 3D image according to the side-by-side scheme is a format including both the left eye image and the right eye image in one frame. Particularly, in the 3D image format according to the side-by-side method, the left eye image and the right eye image are divided into right and left, the left eye image is provided on the left side, and the right eye image is provided on the right side.

In this format, the TV 200 separates each frame of the received 3D image into left eye image parts and right eye image parts by bisecting the left and right frames, and separates the left eye image part and the right eye image part by two Scaled to generate a left eye image and a right eye image to be displayed on the screen, and the generated left eye image and right eye image are alternately displayed on the screen.

Accordingly, the 3D image is divided into two parts: a left eye image in which the left part L1 of the image included in the first frame is doubled, a right eye image in which the right part R1 is doubled in the first frame, > Left eye image which is enlarged twice the left part (L2) of the image included in the second frame -> Right eye image which is twice enlarged the right part (R2) of the image included in the second frame -> ... 'Will be displayed on the screen.

Meanwhile, although the process of processing the 3D image format according to the side-by-side scheme has been described above, it is needless to say that the processing process of the 3D image format according to the top-bottom scheme can also be deduced therefrom. That is, in the case of the 3D image format according to the top-bottom system, the TV 200 divides each frame of the received 3D image into upper and lower halves to divide them into a left eye image part and a right eye image part, And the left eye image and the right eye image to be displayed on the screen, and displays the generated left and right eye images alternately on the screen.

FIG. 5C shows a method of displaying a 3D image on a screen when the 3D image is received by the horizontal interleaving method.

As shown, the format of the 3D image according to the horizontal interleave method is a format including both the left eye image and the right eye image in one frame. In particular, the format of the 3D image according to the horizontal interleave method is a format in which the left eye image and the right eye image are alternately arranged in a row unit.

In this format, the TV 200 separates each frame of the received 3D image into a left eye image part and a right eye image part by dividing each frame by an odd row and an even row, and separates the left eye image part and the right eye image part from each other To generate a left eye image and a right eye image, and displays the generated left eye image and right eye image alternately on the screen.

Accordingly, the 3D image is divided into the right-side part (R1-R1) of the images included in the first frame, the left-eye image obtained by enlarging the odd row parts (L1-1, L1-2) of the images included in the first frame, 2 > in the left eye image- > the second frame in which the left parts L2-1 and L2-2 of the images included in the second frame are doubled, Right-eye images with two-fold magnification of the right-hand part (R2-1, R2-2) 'Will be displayed on the screen.

Of course, with respect to the format of the 3D image according to the horizontal interleave method, the left-eye image is generated by interpolating the even-numbered row portion using the odd-numbered row portion of the image included in one frame without using the enlargement scaling method described above, The right eye image may be generated by interpolating the odd row portion using the row portion.

In addition, it is also possible to implement a method of generating a left eye image by outputting an image for only odd rows and outputting an image for only even rows without using an enlargement scaling method or an interpolation method to generate a right eye image.

Although the process of processing the format of the 3D image according to the horizontal interleaving method has been described above as an example, the process of processing the format of the 3D image according to the vertical interleave method or the checkerboard method can also be deduced from the above .

That is, with respect to the format of the 3D image according to the vertical interleave method, it is possible to provide the 3D image to the user by generating the left eye image and the right eye image by alternately outputting the scaling or interpolation not by line scaling or interpolation, .

In addition, for the 3D image format according to the checkerboard method, pixel-by-pixel scaling or interpolation or pixel-by-pixel scaling or interpolation may be used.

<Screen switching process of 3D image>

Hereinafter, a screen switching process for the 3D image processed as described above will be described with reference to FIGS. 6 and 7. FIG.

6 is a diagram for explaining a screen switching process when the shutter glass is turned on. When the 3D image is received when the TV 200 is in the 2D image output mode, the received 3D image is directly output as shown in the left screen of FIG.

That is, the 2D image output mode means a mode in which the 3D mode is turned off, and displays each image frame included in the input 3D image as it is. Accordingly, in this case, if the 3D image has a format other than the frame sequence format, the left eye image and the right eye image are simultaneously displayed.

6, it can be seen that the 2D object 610 included in the left eye image and the 2D object 620 included in the right eye image are divided into upper and lower portions and displayed on one screen. Accordingly, It can be seen that a 3D image in a format is being received.

On the other hand, the 3D image output mode is a mode in which the 3D mode is turned on, and each image frame included in the input 3D image is divided into a left eye image part and a right eye image part according to the applied format, The left eye image and the right eye image are generated by enlarging and scaling the image portion, and the left eye image and the right eye image are time-divided and displayed alternately.

On the other hand, when the 3D image is received in the 2D image output mode, the TV 200 communicates with the shutter glass 300 to collect status information about the shutter glass 300. The state information is information on the power ON / OFF state of the shutter glass, the battery charging state of the shutter glass, and the opening / closing state of the shutter glass.

Particularly, the TV 200 collects status information on the power ON / OFF status of the shutter glass 300. When it is determined that the power of the shutter glass 300 is OFF, the TV 200 maintains the 2D video output mode, When it is determined that the power of the glass 300 is ON, a message for guiding the 2D image output mode to the 3D image output mode or the 3D image output mode is displayed.

Referring to the upper right screen of FIG. 6, the TV 200 confirms the power ON state of the shutter glass 300 on the basis of the state information, and knows that the 3D image output mode has been switched. As described above, in the 3D image output mode, a 3D image is divided into a left eye image part and a right eye image part according to an applied format, and a left eye image and a right eye image are generated by scaling the separated left eye image part and right eye image part And the left eye image and the right eye image are time-divided and displayed alternately.

Accordingly, the 3D object 630 is displayed on the screen of the TV 200 instead of the 2D objects 610 and 620. FIG. 6 shows a 3D object 630 in which a circular left eye image and a circular right eye image are overlapped for graphical representation of a 3D image that is time-divisionally displayed alternately.

6, a GUI 640 including a message for notifying the user that the 3D output mode is switched to the 3D output mode may be displayed on the screen. In this case, when the predetermined time T elapses, the GUI 640 disappears automatically, and only the 3D object 630 is provided on the screen.

6, a GUI 650 including a message inquiring whether or not to switch to the 3D output mode may be displayed on the screen without switching to the 3D output mode. In this case, the user may press the operation button provided on the TV 200 or the operation button provided on the remote controller to cause the GUI 640 to disappear and switch to the 3D output mode. If the predetermined time T elapses without any selection The GUI 640 may automatically disappear and the 3D output mode may be switched.

In this way, the TV 200 can analyze the intention of the user and actively take actions corresponding to the intention by only turning on the power of the shutter glass 300 by the user, and accordingly, An image can be provided in an output mode in which the viewing intent is considered.

7 is a view for explaining a screen switching process when the shutter glass is turned off. When the TV 200 is in the 3D image output mode, as shown in the left screen of FIG. 7, the TV 200 separates each image frame included in the input 3D image into a left eye image part and a right eye image part according to the applied format The left eye image and the right eye image are generated by enlarging and scaling the separated left eye image part and the right eye image part, and the left eye image and the right eye image are time-divisionally displayed alternately.

Accordingly, the 3D object 630 is displayed on the screen.

Meanwhile, the TV 200 communicates with the shutter glass 300 at predetermined time intervals to collect status information about the shutter glass 300, or to collect the status information from the shutter glass 300 every time the state of the shutter glass 300 is changed And receives status information.

Accordingly, if it is determined that the power of the shutter glass 300 is changed to the OFF state, the TV 200 displays a message for switching the 3D image output mode to the 2D image output mode or switching to the 2D image output mode, 300 to turn on the power.

Referring to the first screen on the right side of FIG. 7, the TV 200 confirms the power-off state of the shutter glass 300 based on the state information and can recognize that the 2D image output mode is switched. As described above, in the 2D image output mode, each image frame included in the input 3D image is displayed as it is.

Accordingly, 2D objects 610 and 620 are displayed on the screen of the TV 200 instead of the 3D object 630 in the top and bottom directions based on the 2D objects 610 and 620 divided into upper and lower parts. It is possible to know that the 3D image to which the format is applied is received.

7, a GUI 660 including a message informing that the 2D output mode has been switched is added together with the 2D objects 610 and 620.

7, the TV 200 maintains the 3D output state as it is, and controls the GUI 670 or the shutter glass 630 including the message for switching to the 2D output mode, as shown in the right third screen and the fourth right screen, It is of course also possible that a GUI 680 including a message to power on or wear may be added to the 3D object 630.

On the other hand, in the case of the second screen on the right side of FIG. 7, when the predetermined time T elapses, the GUI 660 disappears automatically, and only the 2D objects 610 and 620 are displayed on the screen The GUI 670 is disappeared and only the 2D objects 610 and 620 are displayed on the screen as in the first screen on the right side when the predetermined time T elapses or when the user requests switching to the 2D output mode .

7, when the shutter glass 300 is turned on, the GUI 680 disappears and the 3D object 630 disappears. When the shutter glass 300 is turned on, Can be provided on the screen.

As described above, the TV 200 can analyze the intention of the user and actively take actions corresponding to the intention by only turning off the power source of the shutter glass 300. Thus, An image can be provided in an output mode in which the viewing intent is considered.

<Operation flow for switching output mode>

Hereinafter, an operation flow for automatically switching the output mode will be described with reference to FIG. 8 is a flowchart for explaining a method of switching the output mode.

During the output of the 3D image in the 3D output mode (S810), the TV 200 confirms the state of the shutter glass 300 at a predetermined time interval (S820).

If it is determined that the shutter glass 300 is on (S820-ON), the TV 200 continuously outputs the 3D image in the current 3D output mode (S810). If it is determined that the shutter glass 300 is off S820-OFF), the TV 200 determines whether or not the automatic switching mode is set (S830). That is, the above-described output mode automatic switching can be preset by the user.

If the automatic switching mode is set by the user (S830-Y), the TV 200 outputs the 3D image in the 2D output mode (S840), and displays the message indicating that the 2D output mode has been switched (S850). Of course, as described above, only one of steps S840 and S850 may be performed.

On the other hand, if the automatic switching mode is not set by the user (S830-N), the TV 200 displays a message inquiring about the switching of the output mode or a message requesting to wear the shutter glass 300 on the screen (S860) .

As described above, the TV 200 can analyze the intention of the user and actively take actions corresponding to the intention by only turning on or off the power of the shutter glass 300, The image can be provided in an output mode in which the viewing intention of the user is considered.

<Configuration According to Other Embodiments>

FIG. 9 is a view for explaining a configuration of a TV 200 according to another embodiment of the present invention, and FIG. 10 is a diagram for explaining a configuration of a shutter glass 300 according to another embodiment of the present invention.

FIGS. 9 and 10 are the same as or similar to those of FIGS. 3 and 4 described above. Hereinafter, differences from FIGS. 3 and 4 will be mainly described.

3 and 4, the TV 200 and the remote controller 300 transmit and receive a synchronization signal in accordance with the infrared communication method, and for this purpose, the IR transmitter 280 and the IR receiver 310 are respectively provided have.

However, in FIGS. 9 and 10, the TV 200 and the remote controller 300 do not have separate IR transmitters 280 and IR receivers 310.

That is, the TV 200 and the remote controller 300 transmit and receive not only the status information but also the synchronization signal through the communication interfaces 290 and 380 without separately providing the IR transmitting unit 280 and the IR receiving unit 310, The output timing of the video and the open timing of the left eye glass are synchronized and the output timing of the right eye image and the right eye open timing are synchronized and the output mode can be switched based on the state information of the shutter glass 300. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

FIG. 1 illustrates a 3D image providing system according to an embodiment of the present invention.

FIGS. 2A to 2F are views for explaining the format of a 3D image,

3 is a block diagram of a TV according to an embodiment of the present invention,

4 is a block diagram of a shutter glass according to an embodiment of the present invention,

5A to 5C are views for explaining a processing method according to the format of a 3D image,

6 is a diagram for explaining a screen switching process in a case where the shutter glass is turned on;

7 is a view for explaining a screen switching process when the shutter glass is turned off;

8 is a flowchart for explaining the output mode switching method,

9 is a view for explaining a configuration of a TV according to another embodiment of the present invention,

10 is a view for explaining a configuration of a shutter glass according to another embodiment of the present invention.

Claims (19)

A method for switching between a 3D (3-Dimension) image output mode and a 2D (2-Dimension) image output mode of a display device, The display device comprising: receiving status information on the shutter glass from the shutter glass; The display device generating a graphic user interface (GUI) corresponding to the status information; And And switching the output mode based on the status information and displaying a GUI corresponding to the status information, Wherein the switching and displaying step switches the output mode according to a user input for switching to an output mode received via the GUI. The method according to claim 1, The status information may include: Wherein the information about at least one of a power ON / OFF state of the shutter glass, a battery charging state of the shutter glass, and an open / close state of the shutter glass. The method according to claim 1, The switching and displaying step comprises: And automatically switching the 3D image output mode to the 2D image output mode when status information on the power-off state of the shutter glass is received during the 3D image output mode. The method according to claim 1, The switching and displaying step comprises: And automatically switching the 2D image output mode to the 3D image output mode when status information on the power ON state of the shutter glass is received during the 2D image output mode. The method according to claim 1, The switching and displaying step comprises: And a message for requesting power-on of the shutter glass is displayed when the status information on the power-off state of the shutter glass is received during the 3D image output mode. 6. The method of claim 5, And terminating the display of the message when state information related to the power ON state of the shutter glass is received after the state information regarding the power OFF state of the shutter glass is received How to switch output mode. The method according to claim 1, The switching and displaying step comprises: When the state information on the power ON state of the shutter glass is received during the 2D image output mode, a message inquiring whether to switch to the 3D image output mode is displayed. The method according to claim 1, Wherein the shutter glass transmits the status information at a predetermined time interval or transmits the status information when a request for transmission of the status information is received. The method according to claim 1, The 3D image output mode is a mode in which a left eye image and a right eye image constituting the 3D image are alternately displayed on the entire screen, Wherein the 2D image output mode is a mode in which the left eye image and the right eye image are divided and displayed on the screen. A display device operated in a 3D (3-Dimension) video output mode or a 2D (2-Dimension) video output mode, A communication interface for receiving status information on the shutter glass from the shutter glass; And (GUI) corresponding to the status information, and switches an output mode according to a user input for switching to an output mode received via the GUI, based on the status information, and responds to the status information And a display unit for displaying the GUI displayed on the display unit. 11. The method of claim 10, The status information may include: Wherein the information on at least one of a power ON / OFF state of the shutter glass, a battery charging state of the shutter glass, and an open / close state of the shutter glass. 11. The method of claim 10, Wherein, Wherein the controller is configured to automatically switch the 3D image output mode to the 2D image output mode when status information on the power-off state of the shutter glass is received during the 3D image output mode. 11. The method of claim 10, Wherein, Wherein when the status information on the power ON state of the shutter glass is received during the 2D image output mode, the 2D image output mode is automatically switched to the 3D image output mode. 11. The method of claim 10, Wherein, And a message for requesting power-on of the shutter glass is displayed when status information on the power-off state of the shutter glass is received during the 3D image output mode. 15. The method of claim 14, Wherein, And when the status information on the power ON status of the shutter glass is received after the status information regarding the power OFF status of the shutter glass is received, the display for the message is terminated. 11. The method of claim 10, Wherein, And a message inquiring whether to switch to the 3D video output mode is displayed when the status information on the power ON state of the shutter glass is received during the 2D video output mode. 11. The method of claim 10, Wherein the shutter glass transmits the status information at a predetermined time interval or transmits the status information when a transmission request for the status information is received. 11. The method of claim 10, The 3D image output mode is a mode in which a left eye image and a right eye image constituting the 3D image are alternately displayed on the entire screen, Wherein the 2D image output mode is a mode in which the left eye image and the right eye image are divided and displayed on the screen. A shutter glass for alternately opening and closing the left eye glass and the right eye glass on the basis of the synchronization signal received from the outside and transmitting the status information about the shutter glass to the outside; And (3-Dimension) image output mode or a 2D (2-Dimension) image output mode, receives the status information, generates a graphic user interface (GUI) corresponding to the status information, And a display device for switching an output mode according to a user input for switching to an output mode received via the GUI based on the status information and displaying a GUI corresponding to the status information.

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