KR101112085B1 - Demultiplexing apparatus and method for 3d tv - Google Patents

Abstract

PURPOSE: A demultiplexing apparatus for a 3D TV and a method thereof are provided to automatically adjust brightness by dividing the demultiplexing method into a light polarizing filter method or a shutter glass method. CONSTITUTION: A demultiplexing method information input unit(130) receives information about the selected demultiplexing method among the selected one or more demultiplexing methods. A luminance information management part(134) manages each basic luminance value about the demultiplexing method. A brightness setting part(133) controls the luminance of video data which becomes demultiplexed by using the basis luminance value according to the information which is inputted about the demultiplexing method.

Description

DEMULTIPLEXING APPARATUS AND METHOD FOR 3D TV}

The present invention relates to an apparatus and method for inverse multiplexing for 3D TV. In particular, the inverse multiplexing method for 3D image data is classified into a polarization filter method or a shutter glass method. A multiplexing device and method are disclosed.

Recently, digital broadcasting systems supporting high resolution (HD) or higher have been widely used.

In addition, with the development of such digital broadcasting system, technologies for reproducing stereoscopic (3D) video contents that provide more realism when watching a digital TV (Television), a mobile phone, a digital camera, a DVD (Digital Versatile Disk), PMP ( It is spreading around various digital video devices such as Portable Multimedia Player.

As such, the stereoscopic content that simultaneously provides the 3D image content, that is, the left and right images, provides a natural image with excellent stereoscopic feeling and realistic feeling, and thus has been recently provided in a digital broadcasting system.

Accordingly, as the acquisition, generation, and display technologies of stereoscopic content have evolved, technologies for application services and related devices using stereoscopic content have also developed.

1 is an exemplary diagram of an apparatus for multiplexing and demultiplexing video data for a general 3D TV for simultaneously transmitting and reproducing left and right images in order to provide such stereoscopic content.

FIG. 1A illustrates an example of a multiplexing apparatus for a 3D TV. The multiplexing apparatus for a 3D TV includes a signal input unit 10, a multiplexer 20, and a signal output unit 30.

The signal input unit 10 receives the left and right image signals and transmits them to the multiplexer 20.

The multiplexer 20 receives a left and a right video signal and deletes a part of the video data generated by the left and right video signals to make an image format of an SMPTE standard. And an SMPTE format generator 22 for generating an image format.

Such multiplexing methods include various methods such as frame sequential, side-by-side, top bottom, line interleave, and column interleave.

FIG. 1B is an exemplary diagram of a 3D TV demultiplexer, which includes a signal input unit 40, a demultiplexer 50, and a signal output unit 60.

The signal input unit 40 receives an image signal including image data of left and right and transmits the image signal to the demultiplexer 50.

The demultiplexer 50 demultiplexes an image signal including the left and right image data into a left and right image signal in order to receive the image signal and to make the image format of the SMPTE standard. The frame interpolator 51 extends and partially interpolates, and the SMPTE format generator 52 generates an image format.

Thereafter, the signal output unit 60 outputs a signal of the image data of the generated format.

The function of the frame interpolator 51 is shown in more detail in FIGS.

2 to 3, the frame interpolator 51 separates frame data including left and right image data (3, 5), respectively, and de-multiplexes a preset image for viewing a 3D image. In order to provide the information 4, 6, as shown in the drawing, the frame-specific image data 4, 6 is generated according to the preset demultiplexing scheme.

2 to 3 illustrate a representative frame shape of the demultiplexing method, and FIG. 2 illustrates output image data 4 of a sequential output method divided by a shutter glass method, and FIG. 3 is polarized light. The output image data 6 for use as a filter method is shown.

3D content demultiplexed in such a manner generally requires wearing and viewing special glasses for viewing 3D images.

As a method of such 3D viewing glasses, a red-blue glasses method, a polarizing glasses method (polarization filter method), and a shutter glasses method (shutter glass method) are commercially used.

The red and blue glasses method is a method of creating a three-dimensional effect by generating left and right parallax by separating and viewing left and right eyes using the principle of complementary colors, but is rarely used for high quality 3D images because colors are degraded. Do not.

The polarizing glasses method is a method of separating images for left and right eyes using a polarization principle, and making viewers feel a three-dimensional effect.

It is mainly used in 3D cinema because it is light, cheap, and no flickering, and is recently applied to general TV or monitor.

The shutter glasses method is to close the right / left shutters of the glasses and to deliver each image signal to the human eye while sequentially playing the left / right eye images.

For example, when a left eye image appears, a signal blocking the right side is sent to the glasses so that the left eye image can be seen in the left eye.

Since the left and right images are played sequentially, synchronization between the glasses and the display is required, and a circuit for driving the shutter is required, but it is mainly used for personal or small stereoscopic image reproduction because high resolution 3D can be realized without deterioration of image quality. .

In general, the transmittance of the shutter glass method is known to be about 1/6 as compared to the 2D method, and since only one eye can see it at a time, actual brightness is lowered.

In addition, the polarized filter method is slightly behind the resolution, but it is possible to see both eyes at the same time.

The shutter glass method is mainly used for reproduction of 3D video content demultiplexed with a sequential output method.

In addition, the polarization filter method is mainly used for reproduction of 3D video content demultiplexed in a line by line method.

As described above, since the viewer needs to use a glasses method having different bodily sensation luminance according to the demultiplexing method of the 3D image, the luminance varies according to the method even though the same image is used.

In addition, since 2D does not wear glasses, the sensory brightness is inevitably changed when switching to the 3D method.

Korea Patent Registration 10-1030393 Korea Patent Publication 10-2011-0074381

An object of an embodiment of the present invention for improving the above-described problem is to divide the de-multiplexing method of the 3D image data into a polarization filter method or a shutter glass method, etc. to automatically adjust the luminance according to each method, so that the difference between the glasses method when viewing It is to provide an apparatus and method for demultiplexing for 3D TV to minimize the difference in luminance caused.

An object of an embodiment of the present invention for improving the above-mentioned problems is to set the default luminance value darker than the polarization filter glasses method when the demultiplexing method of the image data is 2D method when switching between 3D and 2D viewing method The present invention also provides an apparatus and method for demultiplexing for 3D TV to maintain the bodily sensation brightness felt by the viewer.

The demultiplexer for 3D TV according to an embodiment of the present invention for achieving the above object is a demultiplexer for 3D TV to demultiplex the 3D image data, the demultiplexing method selected from one or more preset demultiplexing method An input demultiplexing method information input unit, a luminance information managing unit managing respective basic luminance values of the demultiplexing method, and a luminance of image data to be demultiplexed by using the basic luminance values of the input demultiplexing method And a brightness setting unit.

The brightness information manager may classify the demultiplexing method into a polarization filter glasses method or a shutter glass method, and set the shutter glass method to be brighter than the polarization filter glasses method and manage the brightness.

In this case, the luminance information manager may classify the line by line method among the demultiplexing methods into a polarization filter glasses method, and divide the sequential output method into a shutter glass method.

The luminance information management unit may further include dividing the demultiplexing method into a 2D method, and when the predetermined demultiplexing method is a 2D method, setting and managing a basic luminance value darker than that of the polarization filter glasses method. desirable.

The demultiplexing method for 3D TV according to an embodiment of the present invention for achieving the above object is a demultiplexing method of the demultiplexing apparatus for 3D TV to demultiplex the 3D image data, selected from one or more preset demultiplexing method Receiving a demultiplexing method, managing respective basic luminance values for the demultiplexing method, and adjusting luminance of the demultiplexed image data using the basic luminance values for the demultiplexing method; Include.

In the brightness value management step, the demultiplexing method may be classified into a polarization filter glasses method or a shutter glass method so that the shutter glass method may be set to be brighter than the polarization filter glasses method and managed.

In the brightness value management step, the line by line method of the demultiplexing method may be classified into a polarization filter glasses method, and the sequential output method may be classified into a shutter glass method.

In addition, the step of managing the luminance value further includes dividing the demultiplexing method into a 2D method, and when the predetermined demultiplexing method is a 2D method, setting and managing a basic luminance value darker than that of the polarizing filter glasses method. More preferred.

Demultiplexing apparatus and method for 3D TV according to an embodiment of the present invention divided the demultiplexing method of the 3D image data into a polarization filter method or a shutter glass method, such as glasses of the display connected by automatically adjusting the luminance according to each method By minimizing the difference in luminance caused by the difference between the methods has the effect of providing a uniform viewing environment.

The demultiplexing apparatus and method for 3D TV according to an embodiment of the present invention provides a method of viewing between 3D and 2D by setting and managing a basic luminance value darker than that of a polarization filter glasses when the demultiplexing method of image data is 2D. Even when switching, there is an effect of making the viewing environment more convenient by maintaining the bodily sensation luminance felt by the viewer.

1 is an apparatus for multiplexing and demultiplexing video data for a typical 3D TV.
2 to 3 are diagrams illustrating the operation of a general frame interpolator for 3D TV.
4 is a block diagram of a demultiplexer for 3D TV according to an embodiment of the present invention.
5 is a configuration diagram of a brightness control unit according to an embodiment of the present invention.
6 is a flowchart of a demultiplexing method for a 3D TV according to an embodiment of the present invention.
7 is a flow chart of the brightness control step according to an embodiment of the present invention.

The present invention as described above will be described in detail with reference to the accompanying drawings and embodiments.

4 is a configuration diagram of the demultiplexing apparatus 100 for 3D TV according to an embodiment of the present invention, and FIG. 5 is a configuration diagram of the brightness adjusting unit 130 according to an embodiment of the present invention.

Referring to FIG. 4, a 3D TV demultiplexer 100 for demultiplexing 3D image data according to an embodiment of the present invention may include a signal input unit 110, a frame interpolator 120, and a brightness controller 130. And a signal output unit 140.

Note that the standard, input, output flow, and signal conversion of the video signal shown in FIG. 4 are merely exemplary.

The signal input unit 110 receives and processes multiplexed high-definition video signals input in the form of SMPTE 292M or analog HDTV signals.

The demultiplexing apparatus 100 performs demultiplexing for separating and reconstructing a high quality multiplexed image input from the signal input unit 110 into a stereo image of two left and right channels.

In this case, the demultiplexing apparatus 100 separates and restores the multiplexed high-definition image into left and right images and outputs them to one channel, or reduces them 1/2 in the horizontal direction (or vertical direction). It performs the frame interpolation function of separating and restoring the high quality image multiplexed into one frame into the left and right images.

The demultiplexing apparatus 100 demultiplexes the Y / C image signal input from the YC signal input unit 111 in the signal input unit 110 in accordance with accurate synchronization.

Alternatively, the demultiplexing apparatus 100 demultiplexes a Y / Pb / Pr or R / G / B image signal input from the RGB signal input unit 112 of the signal input unit 110 in accordance with accurate synchronization. When the image input signal is R / G / B, it is preferable to convert the image input signal into a Y / Pb / Pr signal and process the same.

In addition, the demultiplexing apparatus 100 demultiplexes the multiplexed (30 frames / sec) high-definition image signal input from the signal input unit 110 in a sequential output method (cross-outputting a left eye image and a right eye image), It can be separated and reconstructed in the horizontal or vertical direction and demultiplexed in a line-by-line manner (such as left eye image for even lines and right eye image for odd lines).

Although not shown, the frame interpolator 120 preferably includes a synchronization signal input unit for receiving horizontal and vertical synchronization signals and a demultiplexing method setting unit for receiving a selection signal of a demultiplexing method.

Thereafter, the demultiplexing apparatus 100 automatically adjusts the luminance according to each method by using the selection signal of the demultiplexing method in the luminance controller 130.

As a preferred embodiment thereof, referring to FIG. 5, the luminance controller 130 receives a demultiplexing method information input unit 131 which receives a selected demultiplexing method selected from one or more preset demultiplexing methods. A luminance information management unit 134 for managing each basic luminance value and a luminance setting unit 133 for adjusting the luminance of the demultiplexed image data by using the basic luminance value for the input demultiplexing method.

In this case, the brightness information management unit 134 divides the demultiplexing method into a polarization filter glasses method or a shutter glass method, and sets the shutter glass method to be set brighter than the polarization filter glasses method and manages the default luminance value brighter. Do.

Generally, the shutter glass has a transmittance of about 30% or less, and since only one eye can see it at a time, the actual brightness is lower.

In addition, the polarized filter method is slightly behind the resolution, but can see both eyes at the same time, the reduced brightness of the polarizing film is slightly brighter than the case of the shutter glass.

Of course, in the case of 2D it is naturally brighter than the case of the shutter glass method or the polarization filter method.

Therefore, the brightness setting unit 133 according to the embodiment of the present invention adjusts the brightness by adding a function of adjusting the basic brightness according to the format used when the SMPTE format is formed.

For example, in the case of the demultiplexing of the sequential output method divided by the shutter glass method, the luminance is set to the maximum (eg, +10).

In addition, in the case of the line-by-line inverse multiplexing divided by the polarization filter method, the luminance is set to the middle (eg, +5).

In the case of 2D conversion, the luminance may be provided to be slightly darker than the basic luminance or the basic luminance (eg, −2).

That is, the image format is set differently according to the demultiplexing method for the same luminance. The demultiplexing method divided by the polarization filter method sets the relative luminance higher than 2D when generating the image format, and is divided by the shutter glass method. When generating the image format by the demultiplexing method, the relative luminance is set higher than that of the demultiplexing method of the polarization filter method.

As described above, the 3D TV demultiplexer 100 divides the 3D image data demultiplexing method into a polarization filter method or a shutter glass method and automatically adjusts the luminance according to each method to be connected to the 3D TV. Minimizes the luminance difference caused by the difference of glasses applied to the image providing device (TV or monitor, etc.), which has the advantage of maintaining a uniform viewing environment, and maintains the brightness uniformly even when switching the image method between 3D and 2D. It becomes possible.

Therefore, the luminance information management unit 134 preferably divides the line-by-line method among the demultiplexing methods by the polarization filter glasses method and the sequential output method by the shutter glass method.

In addition, the brightness information manager 134 further includes dividing the demultiplexing method into a 2D method, and when a predetermined demultiplexing method is a 2D method, sets and manages a basic luminance value darker than that of the polarization filter glasses method. It is desirable to.

To this end, it is more preferable that the luminance controller 130 further includes a 3D / 2D determiner 132 that determines whether the demultiplexing scheme is a 3D scheme or a 2D scheme.

Through this, the viewer can adjust the demultiplexer so that the difference in brightness is hardly felt even when the 3D and 2D conversions are performed.

As described above, the 3D TV demultiplexing apparatus 100 sets and manages the basic luminance value darker than the polarization filter glasses method when the demultiplexing method of the image data is the 2D method, even when switching between 3D and 2D viewing methods. The bodily sensation brightness felt by the viewer can be kept constant, thereby making the viewing environment more convenient.

Thereafter, the signal output unit 140 generates the left and right image data subjected to the interpolation in an image format conforming to the standard.

At this time, the signal output unit 140 outputs the multiplexed high-definition video signal in the form of SMPTE 292M or HDTV analog signal, for this purpose, a synchronization signal generator 141 for generating a synchronization signal and an output signal for conversion of the output signal. It is preferable to include a conversion unit 142.

6 is a flowchart of a demultiplexing method for a 3D TV according to an embodiment of the present invention, and FIG. 7 is a flowchart of a brightness adjusting step according to an embodiment of the present invention.

6 to 7, the demultiplexing method for 3D TV is a demultiplexing method of a 3D TV demultiplexing apparatus which demultiplexes 3D image data, and inputs a demultiplexing method selected from one or more preset demultiplexing methods. Receiving steps (S710 and S720), managing respective basic luminance values for the demultiplexing method (S731), and adjusting luminance of demultiplexed image data by using the basic luminance values for the input demultiplexing method. It includes a step (S730).

In addition, the method may further include a format generation step S740 and a signal output step S750.

In the brightness value management step (S731), the demultiplexing method is classified into a polarization filter glasses method or a shutter glass method (S733), and the shutter glass method is set to be brighter than the polarization filter glasses method. S735), it is preferable to manage.

In the luminance value management step (S731), the line by line method of the demultiplexing method may be classified into a polarizing filter glasses method, and the sequential output method may be classified into a shutter glass method.

In addition, the brightness value management step S731 further includes dividing the demultiplexing method into a 2D method (S732), and when the predetermined demultiplexing method is a 2D method, a basic luminance value is further compared to the polarization filter glasses method. It is more preferable to manage by setting to dark (S736).

The foregoing embodiments and advantages are merely exemplary and are not to be construed as limiting the present invention. However, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made by those skilled in the art without departing from the scope of the present invention. .

100: demultiplexer 110: signal input unit
111: YC signal input section 112: RGB signal input section
120: frame interpolator 130: luminance control unit
131: demultiplexing method information input unit 132: 3D / 2D grasp unit
133: luminance setting unit 134: luminance information management unit
140: signal output unit 141: synchronization signal generator
142: output signal converter

Claims (8)

In the demultiplexing device for 3D TV to demultiplex the 3D image data,
A demultiplexing method information input unit configured to receive information on a selected demultiplexing method among at least one preset demultiplexing method;
A luminance information management unit managing respective basic luminance values for the demultiplexing method; And
And a luminance setting unit configured to adjust luminance of image data to be demultiplexed by using the basic luminance value according to the received information about the demultiplexing method. 3.
The display apparatus of claim 1, wherein the luminance information management unit
And dividing the demultiplexing method into a polarization filter glasses method or a shutter glass method to set and manage the shutter glass method to be brighter than the polarization filter glasses method.
The display apparatus of claim 2, wherein the luminance information management unit
3. The demultiplexer for 3D TV of claim 1, wherein the line by line method is divided into a polarization filter glasses method, and a sequential output method is classified into a shutter glass method.
The apparatus of claim 3, wherein the luminance information management unit
The method may further include dividing the demultiplexing method into a 2D method, and when the predetermined demultiplexing method is a 2D method, setting and managing a basic luminance value darker than that of the polarization filter glasses method. Device.
In the demultiplexing method for 3D TV of the demultiplexing device for 3D TV for demultiplexing 3D image data,
a) receiving information on a selected demultiplexing method among one or more preset demultiplexing methods;
b) managing respective basic luminance values for the demultiplexing method; And
and c) adjusting luminance of the demultiplexed image data by using a basic luminance value according to the received information about the demultiplexing method.
The method of claim 5, wherein b)
And dividing the demultiplexing method into a polarization filter glasses method or a shutter glass method and setting and managing the shutter glass method to be brighter than the polarization filter glasses method.
The method of claim 6, wherein step b)
A line by line method of the demultiplexing method is classified into a polarization filter glasses method, and a sequential output method is classified into a shutter glass method.
The method of claim 7, wherein step b)
The method may further include dividing the demultiplexing method into a 2D method, and when the predetermined demultiplexing method is a 2D method, setting and managing a basic luminance value darker than that of the polarization filter glasses method. Way.

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