KR100940209B1 - Method and apparatus for converting display mode of video, and computer readable medium thereof - Google Patents

Abstract

The present invention relates to a method and an apparatus for switching an image display mode. The apparatus for switching an image display mode according to the present invention includes a display unit for displaying image data included in an image signal and whether the image data included in the image signal is a two-dimensional image. An image characteristic parameter extracting unit for extracting an image characteristic parameter indicating information on whether the image is a 3D image, and determining whether an operation mode of the display unit should be switched by receiving the extracted image characteristic parameter and operating as a display unit according to the determination result Including an operation mode switching determination unit for outputting a mode switching signal, it is possible to achieve user convenience in fields such as 3D video broadcasting, which will appear using a digital broadcasting standard system.

Description

Method and apparatus for converting display mode of video, and computer readable medium, including a method and apparatus for converting an image display mode and a program for executing the method.

The present invention relates to an image display switching method and apparatus, and more particularly, to an image display switching method for automatically switching an image display operation mode or notifying a user through an image characteristic parameter indicating a characteristic of a 2D / 3D image. And to an apparatus.

Recently, researches are being conducted to broadcast 3D stereoscopic images through digital television (DTV). Digital broadcasting is a broadcast that converts analog signals such as video, audio, and other data into digital signals, compresses them, transmits them, receives them, converts them into original video, audio, and other data signals, and plays them. In contrast, it provides high quality services.

In addition, research on receiving and displaying three-dimensional images by using the digital broadcasting technology as described above is also in progress. A general method of implementing a 3D image is to use binocular disparity of a viewer. Three-dimensional image implementation using binocular parallax includes a method of wearing glasses for displaying a three-dimensional image, such as polarized glasses, LC shutter glasses, etc., and a device equipped with a lenticular lens, barallax barrier, barallax illumination, etc. There is a method of observing with the naked eye using. The former is called a stereoscopy method and the latter is called an autostereoscopy method.

The stereoscopy method is applied to a place where many people, such as a theater, mainly use a polarization projector. The autostereoscopy method is applied to a game display, a home TV, an exhibition display, or the like used by individuals or a small number of people.

The current research is mostly focused on realizing three-dimensional images using autostereoscopy, and various related products are sold. Most of the 3D (3D) image display device that is currently being introduced is capable of realizing only 3D (3D) image, the price is more expensive than the 2D display device.

However, since content for 3D video is not actively supplied, an expensive 3D video display device cannot satisfy a consumer's desire to purchase.

Accordingly, a lot of researches have been made on a method of manufacturing a 2D / 3D display device capable of selectively implementing 2D and 3D images, and various products have been introduced.

In order to broadcast a 3D stereoscopic image similar to the real image viewed by the human eye, a multi-view 3D image must be created, transmitted, and received and reproduced by a 3D display device. However, the multi-view 3D stereoscopic image has a large amount of data, so it is difficult to accommodate the bandwidth of a channel used in the current digital broadcasting system. Therefore, studies on the transmission and reception of stereo images are being conducted first.

Meanwhile, in most fields, such as digital broadcasting systems, simulations, or medical analysis systems, two-dimensional images need to be selectively implemented along with three-dimensional images. However, in the current digital broadcasting system, an apparatus and method for automatically switching the operation mode or informing the operation mode of the display apparatus according to the 2D image, the 3D image, and the image characteristic parameter representing the 3D image It does not appear for.

The technical problem to be achieved by the present invention is to automatically switch the operation mode of the display device or to change the operation mode according to the 2D image, the 3D image, and the image characteristic parameter representing the 3D image in a digital broadcasting system. It provides a method and apparatus for switching the image display mode.

According to an aspect of the present invention, there is provided an apparatus for switching a video display mode, the apparatus comprising: a display unit configured to display video data included in a video signal; An image characteristic parameter detector for detecting an image characteristic parameter which is information on whether the image data included in the image signal is a 2D image or a 3D image; And an operation mode switching determination unit which receives the detected image characteristic parameter to determine whether an operation mode of the display unit is to be switched and outputs an operation mode switching signal to the display unit according to the determination result. .

According to an aspect of the present invention, there is provided a method of switching an image display mode, the method including: (a) receiving an image characteristic parameter indicating information on whether an image data is a 2D image or a 3D image; (b) determining whether there is a change by comparing the received image characteristic parameter with an image characteristic parameter representing a characteristic of image data currently being displayed; And (c) outputting an operation mode change signal according to the changed image characteristic parameter to a device displaying the image data when it is determined that there is a change in the step (b). .

In addition, an image display mode switching method of the present invention for solving the above technical problem, (a) receiving an image characteristic parameter indicating information on whether the image data is a two-dimensional image or a three-dimensional image; (b) determining whether there is a change by comparing the received image characteristic parameter with an image characteristic parameter representing a characteristic of image data currently being displayed; And (c) outputting a notification signal informing that the image characteristic parameter has been changed, if it is determined in step (b) that the change has occurred.

And a computer readable recording medium having recorded thereon a program for executing the invention described in the image display mode switching method according to the present invention on a computer.

According to the present invention, many fields that require the importance of more advanced image information, such as medical, engineering, and simulation, are used, and stereoscopic image (three-dimensional image) broadcasting which will emerge using DTV standard system in the future. In the field of the present invention through the image characteristic parameter representing the characteristics of the two-dimensional image and the three-dimensional image to inform the user that the operation mode of the display device should be automatically switched or has an effect that can provide more user convenience.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an apparatus for switching a video display mode according to an exemplary embodiment of the present invention. Referring to FIG. 1, the apparatus for switching an image display mode includes a receiver 100, a decoder 110, an image characteristic parameter extractor 120, an operation mode switch determiner 130, a storage 140, and an alerter 150. ), A user interface unit 160, and a display unit 170. Here, the image characteristic parameter extractor 120 includes a 2D / 3D detector 122, an imaging viewpoint number detector 124, and a display format detector 126. In addition, the storage 140 includes a display unit characteristic information 142 and notification information 144.

The receiver 100 receives an image signal transmitted from an image transmitter. Here, the video signal received through the receiver 100 is a video signal in the form of a transport stream. In more detail, the video signal may be data applied to a digital broadcasting system that performs 3D broadcasting.

The decoder 110 performs decoding corresponding to the standard encoded by the video transmitting apparatus. For example, if encoded according to the MPEG-2 standard, decoding is performed accordingly. More specifically, the decoder 510 may decode the encoded video signal by using a decoding scheme such as variable length decoding, inverse DCT, inverse quantization, and motion compensation in consideration of the spatial and spatial correlation of the video signal. And image characteristic parameters.

The image characteristic parameter detector 120 detects the image characteristic parameter among information included in the header predetermined position of the decoded transport stream and outputs the image characteristic parameter to the operation mode switching determiner 130. As described above, the image characteristic parameter detector 120 includes a 2D / 3D detector 122, an imaging viewpoint number detector 124, and a display format detector 126.

Here, the 2D / 3D detector 122 detects whether the image data included in the payload is a 2D image or a 3D image.

The imaging viewpoint number detector 124 detects the imaging viewpoint number information on the image data detected by the 2D / 3D detector 122 as a 3D image. Here, the number of imaging viewpoints of the three-dimensional image is information related to how many different angles are picked up in the process of imaging one object with a camera. The number of viewpoints of imaging of the 3D image will be described in more detail with reference to FIG. 4.

The display format detector 126 detects display format information of image data detected by the 2D / 3D detector 122 as a 3D image. Here, the display format is information about how the format is performed for one scene in the process of synthesizing the 3D image. More specifically, display formats of three-dimensional images include line-by-line format, pixel-by-picel format, top-down format, and the like. Side-by-side format. Such display format information of the 3D image will be described in more detail with reference to FIG. 5.

The user interface unit 160 provides an input / output interface for receiving a command from the user to control the operation mode switching determination unit 130.

The operation mode switching determination unit 130 receives the image characteristic parameter detected by the image characteristic parameter detector 120 and determines whether the display unit operation mode should be switched based on whether the input image characteristic parameter is changed. . The operation mode switching determination unit 130 will be described in more detail with reference to FIG. 2.

FIG. 2 is a block diagram illustrating in detail the operation mode switching determiner of FIG. 1. Referring to FIG. 2, the operation mode switching determination unit 130 may include an input unit 131, a loading unit 132, a determination unit 133, a setting unit 134, a display output unit 135, and a notification output unit 136. It is configured to include.

The input unit 131 receives an image characteristic parameter detected by the image characteristic parameter detector 120.

The loading unit 132 loads the storage unit 140 that stores the characteristic information of the display unit related to the image characteristic parameter.

The determination unit 133 determines whether the operation mode of the display unit should be switched. In addition, when it is determined that the operation mode of the display unit is to be switched, the determination unit 133 outputs an operation mode switching signal to the display unit 170 through the display output unit 135 or through the notification output unit 136. In step 150, a notification signal indicating that the operation mode should be switched is output.

The setting unit 134 outputs an operation mode switching signal from the determination unit 133 through the display output unit 135 according to the interface signal input through the user interface unit 170 or the notification output unit 136. Set whether or not to output a notification signal informing that the operation mode should be switched.

In addition, the setting unit 134 may output an operation mode switching signal through the display output unit 135 and an operation mode switching notification signal indicating that the operation mode is automatically switched through the notification output unit 136. .

For example, the determination unit 133 determines whether to change the display operation mode based on whether the image characteristic parameter input through the input unit 131 is changed. Here, the image characteristic parameter is a case where only the information on whether the image data input from the image characteristic parameter detector 120 is a 2D image or a 3D image. That is, the determination unit 133 receives an image characteristic parameter indicating that the current image data is a 2D image through the input unit 131, and when the image data receives an image characteristic parameter indicating a 3D image, the operation of the display unit 170. It will either switch the mode to the 3D display mode or inform it that it should be switched.

In another specific example, the determination unit 133 compares the image characteristic parameter input through the input unit 131 with the characteristic information of the display unit loaded and input through the loading unit 132 to switch the operation mode of the display unit. Will be judged. Here, the image characteristic parameter is a case where the image data includes a number of image capturing viewpoints or display format information when the image data is a 3D image. That is, the determination unit 133 receives an image characteristic parameter in which the current image data has a predetermined number of imaging viewpoints of the 3D image through the input unit 131, and the image data has a different predetermined imaging viewpoint number of the 3D image. When the image characteristic parameter is input, the operation mode of the display unit 170 may be switched to be the predetermined number of imaging viewpoints of the 3D image, or it should be informed that the image should be switched.

The storage unit 140 stores the display unit characteristic information 142 related to the image characteristic parameter and the notification unit 144 related to the notification signal when the display unit operation mode is notified through the display unit 150. .

The notification unit 150 is a device that receives a notification signal indicating that the operation mode of the display unit should be switched from the notification output unit 136 of the operation mode switching determination unit 130 so as to be displayed by the user. In addition, the notification unit 150 is a device for displaying such that when the operation mode of the display unit can not perform the function from the notification output unit 136 of the operation mode switching determination unit 130.

More specifically, the notification unit 150 may be implemented by using various auxiliary devices such as an on-screen display (OSD), a light emitting diode (LED), and a speaker.

The display unit 170 receives the operation mode switch signal transmitted from the operation mode switch determination unit 130 and the decoded image data from the decoder unit 110. The display unit 170 displays the decoded image data on the screen according to the operation mode change signal.

More specifically, when the operation mode switching signal indicates the two-dimensional operation mode, the display unit 170 displays decoded image data input from the decoder unit 110 on the screen in two dimensions. In addition, when the operation mode switching signal indicates the 3D operation mode, the display unit 170 displays decoded image data input from the decoder 110 on the screen in three dimensions. Furthermore, the display unit 170 operates the predetermined imaging viewpoint number of times of the 3D image when the operation mode switching signal is shown to include a predetermined imaging viewpoint number operation mode of the 3D image or a predetermined display format operation mode of the 3D image. The decoded image data is displayed to correspond to a mode or a predetermined display format operation mode of a 3D image.

Here, the display unit 170 is composed of a 2D / 3D combined display device. The method of implementing the 2D / 3D combined display device may vary. More specifically, the display unit 170 of the present invention is an image forming panel display, a lens unit and the above described as described in the Republic of Korea Patent Publication No. 10-0440956 (name of the invention: 2D / 3D combined display) It may be implemented to include a power supply for selectively supplying power to the lens unit. In addition, there is a 2D / 3D combined display device having a liquid crystal shutter behind the TFT-LCD and selectively displaying two-dimensional and three-dimensional images using the liquid crystal shutter. However, the above examples are just one example, and the display unit 170 of the present invention is not limited thereto and may be implemented in various ways.

3 is an example of a transport stream structure input to the receiver of FIG. 1. Referring to FIG. 3, the transport stream includes a header 300 and a payload 320.

The header 300 of the transport stream includes various control information for displaying image data included in the payload 320. In the predetermined position of the header 300 of the transport stream, an image characteristic parameter 302 related to a display method for image data included in the payload 320 is stored.

The image characteristic parameter 302 determines whether the image data stored in the payload 320 is a two-dimensional (2D) image (for example, a general TV signal or a VCR signal). ) 2D / 3D classification information 302a on whether or not the image is included.

In addition, when the image stored in the payload 320 is a 3D image, the image characteristic parameter may further include image capturing view number information 302b of the 3D image.

In addition, when the image stored in the payload 320 is a 3D image, the image characteristic parameter may further include display format information 302c of the 3D image.

4A and 4B are diagrams illustrating an example of an image capturing view number of a 3D image in FIG. 1. Referring to FIG. 4A, one object 400 is photographed with two cameras 421 and 422 located at different positions. That is, the number of viewpoints of imaging of the 3D image is two views. Here, the object may be a stationary object or may be a moving object. The two cameras 421 and 422 respectively capture the left eye image and the right eye image of the target object 400 separately.

Referring to FIG. 4B, one object 400 is photographed with four cameras 421, 422, 423 and 424 located at different positions. That is, the number of viewpoints of imaging of the three-dimensional image is four.

4A and 4B, the object may be a stationary object or may be a moving object.

In FIGS. 4A and 4B, the viewpoints of 2 and 4 have been described with respect to the number of viewpoints of imaging of the 3D image. However, one object 400 may be imaged to have more various imaging viewpoints.

5A through 5D are diagrams illustrating an example of a display format method of a 3D image in FIG. 1. 5A to 5D, FIG. 5A shows an image for the line-by-line format, FIG. 5B shows an image for the pixel-by-pixel format, FIG. 5C shows a top-down format image, and FIG. 5d represents an image for the side-by-side format.

More specifically, the display format method for the stereo image (left eye image, right eye image) will be described below. The left eye image and the right eye image are each (N × M) in size.

In the line-by-line format of FIG. 5A, the left eye image and the right eye image are each half subsampled in the vertical direction, so that the pixels of the left eye image and the pixels of the right eye image are alternately line by line. Create a 3D image by positioning it as. In the pixel-by-pixel format of FIG. 5B, the left eye image and the right eye image are each half subsampled in the horizontal direction, so that the pixels of the left eye image and the pixels of the right eye image are one pixel. Create three-dimensional images by placing them alternately. In the top-down format image of FIG. 5C, the left eye image and the right eye image are each half subsampled in the vertical direction, and the sampled left eye image is positioned at the top and the sampled right eye image is positioned at the bottom. Create one 3D image. That is, by sub-sampling the (N x M) sized left and right eye images to the (N x M / 2) size, respectively, and placing them above and below, a three-dimensional (N x M) sized 3D image is created. FIG. 5D is a side-by-side format image, in which the left eye image and the right eye image are each half subsampled in the horizontal direction, and the sampled left eye image is sampled on the left side. It is located on the right side to make one 3D image. That is, a three-dimensional image of one (N x M) size is generated by subsampling the (N x M) sized left and right eyes images to each (N / 2 x M) size and placing them on the left and right sides.

As described above, there are a variety of three-dimensional image synthesis formats. Among them, the top-down format as shown in FIG. 5C and the side-by-side format as shown in FIG. 5D are compressed by MPEG or the like. It can be used a lot because it is efficient.

6 is a block diagram of an image transmitter for transmitting a transport stream input to the receiver of FIG. 1. Referring to FIG. 6, the image transmitter includes a storage unit 600, an image characteristic parameter generator 610, a user interface unit 620, an encoder unit 630, and a transmitter unit 640.

The storage unit 600 stores image data obtained by capturing an object. The image data stored in the storage unit 600 may be an image obtained by photographing one object with one camera or may be images obtained by photographing one object with a plurality of cameras.

That is, the image data stored in the storage unit 600 may be a two-dimensional image, and the left eye image and the right eye image taken by the plurality of cameras are subsampled and synthesized to display as described above with reference to FIGS. 5A to 5D. It may be a three-dimensional image of any one of the formats.

The image characteristic parameter generator 610 generates an image characteristic parameter for the image data stored in the storage 600. Here, the image characteristic parameter includes whether it is a 2D image or a 3D image. Furthermore, in the case of a three-dimensional image, it may include information on the number of image capsing points or display format information.

The user interface 620 receives an instruction for controlling the image characteristic parameter setting unit 610 from the user, and provides an input / output interface for receiving the image characteristic parameter. The user sets an image characteristic parameter for the image data stored in the storage unit 600 through the user interface unit 620.

In an embodiment of the present invention, the user interface unit 620 is configured to set image characteristic parameters. However, in this regard, various embodiments, such as a method of directly setting image characteristic parameters in the process of capturing an image, are possible.

The encoder 630 receives image data obtained by capturing an object from the storage unit 600 and image characteristic parameters set by the image characteristic parameter setting unit 610. The encoder 630 encodes the image data input from the storage unit 600 and the image characteristic parameter received from the image characteristic parameter setting unit 610 to convert the image data into a transport stream. Herein, the encoder 630 allows the images input from the storage unit 600 to be included in the payload of the transport stream, and the image characteristic parameter is included in the header predetermined position of the transport stream. Also, the encoder 630 performs encoding by MPEG or various other methods.

The transmitter 640 transmits the encoded transport stream according to a digital broadcast standard or other various transport standards.

7 is a flowchart illustrating a method for automatically switching a 2D image and a 3D image display according to an exemplary embodiment of the present invention. Referring to FIG. 7, first, an image characteristic parameter representing a characteristic of image data is received (S700).

Next, it is determined whether or not there is a change by comparing the image characteristic parameter received in step S700 with the image characteristic parameter representing the characteristic of the image data currently being displayed (S710). Here, the image characteristic parameter includes whether the image data is a 2D image or a 3D image. Furthermore, when the image data is a 3D image, the image data may relate to image capturing time information or display format information.

If it is determined in step S710 that there is a change in the image characteristic parameter, an operation mode switching signal according to the changed image characteristic parameter is output to the apparatus displaying the image data (S720).

On the other hand, when it is determined in step S710 that there is no change of the image characteristic parameter, the process ends.

FIG. 8 is a flowchart illustrating an example of an automatic display switching method when an image characteristic parameter is a 2D image and a 3D image in FIG. 7. Referring to FIG. 8, first, an image characteristic parameter representing a characteristic of image data is received (S800). Here, the image characteristic parameter relates to whether the image data is a 2D image or a 3D image.

Next, it is determined whether there is a change by comparing the image characteristic parameter input in step S800 with the image characteristic parameter representing the characteristic of the image data currently being displayed (S810).

As a result of the determination in step S810, when it is determined that there is a change in the image characteristic parameter received in step S800, it is determined whether the image data is a 2D image or a 3D image through the input image characteristic parameter (S820). On the other hand, when it is determined in step S810 that there is no change of the image characteristic parameter input in step S800, the process ends.

In addition, when it is determined in step S820 that the image data is a 3D image, the display apparatus outputs a 3D operation mode switching signal for switching to the 3D operation mode (S830). On the other hand, when it is determined in step S820 that the image data is a 2D image, the display apparatus outputs a 2D operation mode switching signal for switching to the 2D operation mode (S840).

8, the method may further include outputting a notification signal indicating that the display apparatus has been switched to the 3D operation mode to the notification apparatus. In operation S840, the method may further include outputting, by a notification device, a notification signal indicating that the display device has been switched to the two-dimensional operation mode.

FIG. 9 is a flowchart illustrating an example of a display change notification method when the image characteristic parameters are 2D and 3D images in FIG. 7. 9, first, an image characteristic parameter representing a characteristic of image data is received (S900). Here, the image characteristic parameter relates to whether the image data is a 2D image or a 3D image.

Next, it is determined whether or not there is a change by comparing the image characteristic parameter input in step S900 with an image characteristic parameter representing the characteristic of the image data currently being displayed (S910).

As a result of the determination in step S910, when it is determined that there is a change in the image characteristic parameter input in step S900, it is determined whether the image data is a two-dimensional image or a three-dimensional image through the input image characteristics (S920). On the other hand, when it is determined in step S910 that there is no change of the image characteristic parameter input in step S900, the process ends.

As a result of the determination in step S920, when it is determined that the image data is a three-dimensional image, a notification signal informing that the notification device should be switched to the three-dimensional operation mode is output (S930). On the other hand, if it is determined in step S920 that the image data is a two-dimensional image, a notification signal for notifying that the switch to the two-dimensional operation mode is output to the notification device (S940).

FIG. 10 is a flowchart illustrating an example of an automatic display switching method when the image characteristic parameter is 3D image capturing view point information or display format information. Referring to FIG. 10, first, an image characteristic parameter representing a characteristic of image data is received (S1000). In this case, the image characteristic parameter relates to the image capturing information or the display format information, wherein the image data is a three-dimensional image.

Next, it is determined whether or not there is a change by comparing the image characteristic parameter input in step S1000 with the image characteristic parameter representing the characteristic of the image data currently being displayed (S1010).

As a result of the determination in step S1010, when it is determined that there is a change in the image characteristic parameter input in step S1000, it is determined whether the image data is a 2D image or a 3D image through the input image characteristic parameter (S1020). . On the other hand, when it is determined in step S1010 that there is no change in the image characteristic parameter input in step S1000, the process ends.

As a result of the determination in step S1020, when it is determined that the image data is a 3D image, characteristic information of the display apparatus related to the image characteristic parameter is loaded (S1030). On the other hand, if it is determined in step S1020 that the image data is a 2D image, an operation mode switching signal for switching to a 2D operation mode is output to the display apparatus (S1070).

In step S1030, it is determined whether the display device can perform an operation mode corresponding to the image characteristic parameter input in step S1000 by comparing the image characteristic parameter input in step S1000 and the characteristic information of the display apparatus loaded in step S1030. It is determined (S1040).

As a result of the determination in step S1040, when it is determined that the display apparatus can perform an operation mode corresponding to the image characteristic parameter input in step S1000, the display apparatus switches to the number of image capturing viewpoints or display format. The switching signal is output (S1050). On the other hand, if it is determined in operation S1040 that the display apparatus cannot perform the operation mode corresponding to the input image characteristic parameter, the notification apparatus outputs a notification signal informing of this.

In operation S1050 of FIG. 10, the method may further include outputting, to the notification device, a notification signal indicating that the display apparatus has been switched to the image capturing view number or display format of the corresponding 3D image. In operation S1070, the method may further include outputting a notification signal indicating that the display apparatus has been switched to the two-dimensional operation mode to the notification apparatus.

FIG. 11 is a flowchart illustrating an example of a display change notification method when the image characteristic parameter is 3D image capturing view number information or display format information in FIG. 7. Referring to FIG. 11, the same reference numerals as those described in FIG. 10 are the same, and there is a difference between step S1050 ′ corresponding to step S1050 and step S1070 ′ corresponding to step S1070. That is, the same reference numerals as those of FIG. 10 will be referred to FIG. 10.

In operation S 1050 ′, when it is determined in operation S 1040 that the display apparatus may perform an operation mode corresponding to the image characteristic parameter input in operation S 1000, the display apparatus may display the number of image capturing times or display formats. An operation mode switching signal is outputted to cause a notification signal informing that the switch should be performed.

In operation S1070 ′, when it is determined in operation S1020 that the image data is a two-dimensional image, a notification signal is output to the display device indicating that the operation mode should be switched to the two-dimensional operation mode.

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD_ROM, magnetic tape, floppy disks, and optical data storage, and may also include those implemented in the form of carrier waves (e.g., transmission over the Internet). . The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a block diagram of an apparatus for switching a video display mode according to an exemplary embodiment of the present invention.

FIG. 2 is a block diagram illustrating in detail the operation mode switching determiner of FIG. 1.

3 is an example of a transport stream structure input to the receiver of FIG. 1.

4A and 4B are diagrams illustrating an example of an image capturing view number of a 3D image in FIG. 1.

5A through 5D are diagrams illustrating an example of a display format method of a 3D image in FIG. 1.

6 is a block diagram of an image transmitter for transmitting a transport stream input to the receiver of FIG. 1.

7 is a flowchart illustrating a method of switching a video display mode according to an exemplary embodiment of the present invention.

FIG. 8 is a flowchart illustrating an example of an automatic display switching method when an image characteristic parameter is a 2D image and a 3D image in FIG. 7.

FIG. 9 is a flowchart illustrating an example of a display change notification method when the image characteristic parameters are 2D and 3D images in FIG. 7.

FIG. 10 is a flowchart illustrating an example of an automatic display switching method when the image characteristic parameter is 3D image capturing view point information or display format information.

FIG. 11 is a flowchart illustrating an example of a display change notification method when the image characteristic parameter is 3D image capturing view number information or display format information in FIG. 7.

Claims (11)

A display unit configured to display image data included in the image signal; An image characteristic parameter detector for detecting an image characteristic parameter which is information on whether the image data included in the image signal is a 2D image or a 3D image; And An operation mode switching determination unit outputting an operation mode switching signal to the display unit based on the detected image characteristic parameter; And the image characteristic parameter detector comprises a display format detector configured to detect an image characteristic parameter which is information about a display format of the 3D image when the image data is a 3D image. A display unit configured to display image data included in the image signal; An image characteristic parameter detector for detecting an image characteristic parameter which is information on whether the image data included in the image signal is a 2D image or a 3D image; And An operation mode switching determination unit outputting an operation mode switching signal to the display unit based on the detected image characteristic parameter; The image characteristic parameter detection unit includes an image display mode number detecting unit that detects an image characteristic parameter which is information on the number of imaging viewpoints of the 3D image when the image data is a 3D image. . The method of claim 1, And a display format of the 3D image includes one of a line-by-line format, a pixel-by-pixel format, a top-down format, and a side-by-side format. The method according to claim 1 or 2, The operation mode switching determination unit receives the detected image characteristic parameter to determine whether the operation mode of the display unit should be switched, and selectively outputs an operation mode switching signal to the display unit according to the determination result. Mode switching device. The method according to claim 1 or 2, And the operation mode switching determination unit outputs the operation mode switching signal using only the detected image characteristic parameter without considering an image characteristic parameter indicating a characteristic of image data currently being displayed. (a) receiving an image characteristic parameter indicating information on whether the image data is a 2D image or a 3D image; And (b) outputting an operation mode switching signal according to the received image characteristic parameter to a device displaying the image data; And the image characteristic parameter comprises information on a display format of the 3D image when the image data is a 3D image. (a) receiving an image characteristic parameter indicating information on whether the image data is a 2D image or a 3D image; And (b) outputting an operation mode switching signal according to the received image characteristic parameter to a device displaying the image data; And the image characteristic parameter includes information on the number of image capturing viewpoints of the 3D image when the image data is a 3D image. The method of claim 6, And the display format of the 3D image comprises one of a line-by-line format, a pixel-by-pixel format, a top-down format, and a side-by-side format. The method according to claim 6 or 7, The outputting of the operation mode switching signal may include: (b1) determining whether there is a change by comparing the received image characteristic parameter with an image characteristic parameter representing a characteristic of image data currently being displayed; And (b2) if it is determined in step (b1) that there is a change, outputting an operation mode switching signal according to the changed image characteristic parameter to the apparatus for displaying the image data; How to switch. The method according to claim 6 or 7, The outputting of the operation mode switching signal may include outputting the operation mode switching signal using only the input image characteristic parameter without considering an image characteristic parameter indicating a characteristic of image data currently being displayed. The video display mode switching method characterized in that. A computer-readable recording medium having recorded thereon a program for executing the image display mode switching method according to any one of claims 6 to 8.

Images