CN102036090B - A TV signal conversion device for digital TV terminal - Google Patents

Abstract

The present invention proposes a TV signal conversion device for a digital TV terminal, including: a mode controller, which generates a mode control signal according to user configuration; a video receiver, which receives and converts video to obtain a digital format image; a storage controller, which stores The digital format image is controlled according to the mode control signal; the calculation module is used to perform depth transformation on the image according to the control signal; the rendering module is used to render the depth map or digital format image according to the mode control signal; the frame rate converter receives and converting the frame rate of the digitally formatted image or the rendered image; and the video transmitter, converting the format of the frame rate converted image. Through this device, the planar video signal can be converted into a stereoscopic video signal through a certain algorithm, and at the same time, the stereoscopic video signal can be conveniently and flexibly transformed into a red and green stereoscopic signal for ordinary TV sets, realizing the flexible conversion between video signals .

Description

A TV signal conversion device for digital TV terminal

technical field

The invention relates to the technical field of visual processing and conversion of flat video to stereoscopic video, in particular to a TV signal conversion device for a digital TV terminal.

Background technique

With the advancement of the revolution in the TV industry, TVs are gradually developing in the direction of high-quality, high-definition, and interactive. At present, there have been many TVs with stereoscopic display functions on the market, but most TV stations currently do not broadcast stereoscopic channels. These stereoscopic displays can only receive flat video; on the other hand, although stereoscopic TVs are not widely popular among consumers, many consumers also hope to experience the effect of stereoscopic video. This brings the following requirements:

1. If the user has a stereoscopic display, he wishes to see the stereoscopic effect even though he receives a flat TV signal.

2. If the user only has a common flat display, the user wishes to watch red and green stereoscopic effect TV programs under the condition of flat video signals, and when the signal is a stereoscopic video signal, the user also hopes to watch red and green TV programs. stereoscopic effect of TV programs.

Therefore, how to convert between the TV transmission system and the video signal of the final display terminal of the TV according to the needs of users has become an urgent problem to be solved in today's society.

Contents of the invention

The purpose of the present invention is to solve at least one of the above-mentioned technical drawbacks.

The present invention aims at how to convert between the TV transmission system and the video signal of the final display terminal of the TV according to the needs of users, and proposes a TV signal conversion device for digital terminals.

In order to achieve the above object, the TV signal conversion device for digital terminals proposed by the present invention includes: a video receiver, a storage controller, a computing module, a rendering module, a frame rate converter, a mode controller and a video transmitter, the The mode controller generates a mode control signal according to the configuration of the user, wherein the mode control signal controls the storage controller, the calculation module and the rendering module; the video receiver is used to receive and convert video signals to Obtain a digital format image of each frame of image; the storage controller is used to store the digital format image and control the digital format image according to the mode control signal; the calculation module is connected to the storage controller, It is used to perform depth transformation on the digital format image according to the control signal to obtain a depth image; the rendering module is respectively connected to the calculation module and the storage controller, and is used to transform the digital format image according to the mode control signal. The depth image or the digital format image is rendered to obtain a rendered image; the frame rate converter is connected to the storage controller and the rendering module, and is used to receive and convert the digital format image and/or the the frame rate of the rendered image to obtain a frame rate converted image; and a video transmitter, configured to convert the format of the frame rate converted image to output a format-converted video.

In an embodiment of the present invention, the mode control signal includes a first mode control signal, a second mode control signal, a third mode control signal and a fourth mode control signal, wherein the first mode control signal is a planar to Stereo mode signal, the second mode control signal is a plane-to-red-green stereo mode signal, the third mode control signal is a stereo-to-red-green mode signal, and the fourth mode control signal is an off mode signal.

In an embodiment of the present invention, the video signal and the format-converted video are high-definition digital multimedia video signals, component analog video signals or composite analog video signals.

In an embodiment of the present invention, the storage controller is used to store the digital format image and control the digital format image according to the mode control signal, further comprising: judging the type of the mode control signal; if the If the mode control signal is the first mode control signal or the second mode control signal, the storage controller simultaneously sends the digital format image of the current frame and the pre-cached digital format image of the previous frame of the current frame to the the calculation module; if the mode control signal is a third mode control signal, the storage controller simultaneously sends the left view of the digital format image and the pre-cached right view of the digital format image to the rendering modules; and if the mode control signal is a fourth mode control signal, the memory controller sends the digital format image to the frame rate converter.

In an embodiment of the present invention, the calculation module performs depth conversion on the digital format image according to the mode control signal, further comprising: judging the type of the mode control signal; if the mode control signal is the first mode control signal or the second mode control signal, the calculation module obtains the depth image of the digital format image of the current frame according to the digital format image of the current frame and the pre-cached digital format image of the previous frame of the current frame, And sending the depth image and the digital format image of the current frame to the rendering module.

In an embodiment of the present invention, the rendering module renders the depth image or the digital format image according to the mode control signal, further comprising: judging the type of the storytelling mode control signal; if the mode control signal is The first mode control signal, the rendering module renders the depth image and the digital format image of the current frame to obtain and cache the left view and right view of the digital format image of the current frame, and sequentially The left view and the right view are sent to the frame rate converter; if the mode control signal is a second mode control signal, the rendering module renders the depth image and the digital format image of the current frame , to obtain and buffer the red-green image of the digital format image of the current frame, and send the red-green image to the frame rate converter; if the mode control signal is a third mode control signal, the The rendering module extracts and synthesizes red and blue-green components respectively from the left view of the digital format image and the pre-cached right view of the digital format image, so as to obtain a red and green video image of the digital format image.

In an embodiment of the present invention, the frame rate converter performs corresponding frame rate conversion on the digital format image and/or the rendered image according to the requirements of different television equipment, and sends the frame rate converted image to The video transmitter.

In an embodiment of the present invention, the video transmitter performs format conversion on the frame rate-converted image to obtain a high-definition digital multimedia video signal, component analog video signal or Composite analog video signal.

The TV signal conversion device for digital TV terminals proposed by the present invention solves the mismatch problem between the TV transmission system and the TV terminal display, and the device can convert plane video signals into stereoscopic video signals through a certain algorithm. At the same time, it can conveniently and flexibly transform the stereoscopic video signal into a red-green stereoscopic signal for ordinary TV sets, realizing the flexible conversion between video signals, so that users have a better experience when watching TV programs or video programs. The image experience effect enhances the visual effect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a structural diagram of a television signal conversion device for a television equipment terminal according to an embodiment of the present invention.

Detailed ways

All embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

The present invention aims at how to convert between the TV transmission system and the video signal of the final display terminal of the TV according to the needs of users, and proposes a TV signal conversion device for digital terminals.

The working principle of the television signal conversion device for digital terminals proposed in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 , it is a structural diagram of a television signal conversion apparatus for a television equipment terminal according to an embodiment of the present invention. It can be seen from FIG. 1 that in a specific embodiment of the present invention, the TV signal conversion device 100 for a TV equipment terminal includes a video receiver 110, a mode controller 120, a storage controller 130, a computing module 140, a rendering module 150 , frame rate converter 160 and video transmitter 170 .

Specifically, the TV signal conversion device 100 for a TV equipment terminal has a mode controller 120, and the mode controller 120 can perform different forms of conversion configurations for video formats according to user needs. In an embodiment of the present invention , including four different forms of configurations, namely the first mode control signal, the second mode control signal, the third mode control signal and the fourth mode control signal. The first mode control signal is a control signal for controlling the transformation of a planar image into a stereoscopic mode image (active stereoscopic display), the second mode control signal is a control signal for controlling the transformation of a plane image into a stereoscopic mode image (red and green stereoscopic display), and the third mode controls The signal is the control signal to control the stereoscopic image to red-green mode image, and the fourth mode control signal is the control signal to control the off mode. In other words, the fourth mode control signal means that the input video will not be 2d to 3d or 3d to 2d conversion, and directly output the video.

More specifically, in one embodiment of the present invention, the TV signal conversion device 100 for a TV equipment terminal first receives each frame of input video information through a video receiver 110 (digital video signal receiver), In specific embodiments of the present invention, each frame of image can be a high-definition digital multimedia video signal, a component analog video signal or a composite analog video signal, wherein, in some embodiments of the present invention, the high-definition digital multimedia video signal Signals such as: HDMI digital format signal, DVI digital format signal and other digital format video signals. These format signals need to be converted into digital format signals by the video receiver 110 for use by the TV signal conversion device 100 for the TV equipment terminal. For the storage controller 130, first judge the current mode according to the mode control signal, if the current mode is a plane image to a stereo mode image (active stereo display, the first mode) or a plane image to a stereo mode image (red and green stereo display, the second mode) ), the current video frame will be cached in a memory in the storage controller 130 while each frame is input, and then the current frame and the previous frame image will be delivered to the calculation module 140 simultaneously, and the calculation module 140 can be based on these two frame information Get the depth image of the current frame. In a preferred embodiment of the present invention, the calculation module 140 generates depth information using a block matching algorithm. Specifically, the matching algorithm first divides two frames of images into blocks, then matches the blocks of two adjacent frames, and calculates the motion vector , and then assign corresponding depth values to the current frame image according to the principle of "the fastest is the closest", and finally the depth image is obtained through filtering. In one embodiment of the present invention, the depth image is obtained by using Gaussian filtering method. Filtering by other filtering methods. In addition, the calculation module 140 can also use other methods to calculate the depth image of the current frame, such as: optical flow method, motion estimation method, occlusion judgment method, contour analysis method, etc. However, those skilled in the art know that no matter what method is used To obtain the depth image, these transformations or changes based on the idea of the present invention should be listed as the protection scope of the present invention. Then the depth image and the current frame are sent to the rendering module 150, and the rendering module 150 converts the plane image into a stereoscopic mode image (active stereoscopic display, the first mode) or the plane image into a stereoscopic mode image (red and green stereoscopic display, the second mode) The working methods are different. In the first mode, for each frame of the original video, the rendering module 150 first caches two views of the frame, and then sequentially outputs two views, namely: the left view and the right view, thereby generating In the second mode, the rendering module 150 only outputs a single red and green image for each frame of the source image, so that the common flat panel display can display the red and green stereoscopic video signal. For the above two modes, the rendered video signal obtained is finally sent to the frame rate converter 160 for frame rate conversion, and after the conversion is completed, the video is sent to the video transmitter 170 (digital video transmitter), and the video transmitter 170 The video signal in the digital format is converted into a video signal that can be displayed by the display device and then sent to the system for playback by the display device. In one embodiment of the present invention, the converted signal can be an HDMI digital format signal, a DVI digital format signal, a component analog video signal or a composite analog video signal. In addition to the signal format, it can also be a video signal in other formats for display by the display device.

In a specific embodiment of the present invention, for a stereoscopic image into a red-green mode image (the third mode), after using the video receiver 110 (digital video receiver) to obtain each frame signal of the input stereoscopic video, it is sent to the storage controller In 130, the image information of a certain view in the frame signal is first cached. In one embodiment of the present invention, the cached image information is the left view. However, those skilled in the art know that the right view can also be cached first, and then the left view can be cached. The view and the right view are sent to the rendering module at the same time, no matter whether the left view or the right view is cached, these changes based on the idea of the present invention shall fall within the scope of protection of the present invention. Then, the images of the two views (left view and right view) in each frame can be sent to the rendering module 150 for rendering at the same time. The rendering module 150 only needs to take out the red component and the blue-green component in the two views for processing. Synthesize to obtain a single red-green video signal. Finally, the red-green video signal is sent to the frame rate converter 160 for frame rate conversion. After the conversion is completed, the video is sent to the video transmitter 170 to be sent out of the system.

In a specific embodiment of the present invention, in the closed mode (the fourth mode), the video information obtained by the video receiver 110 (digital video signal receiver) is first sent to the storage controller 130, and the storage controller 130 according to the mode The control signal judges that the mode currently configured by the user is the fourth mode. At this time, the user does not need to convert the video signal, so the storage controller 130 directly sends the video signal to the frame rate converter 160 for frame rate conversion. After the conversion is completed, the The video is sent to the video transmitter 170 out of the system.

The above is an overall introduction to the functions of the device proposed by the present invention, and the specific functions of each component of the device will be specifically introduced below.

With reference to Fig. 1, in one embodiment of the present invention, mode controller 120 is configured into four modes according to user's self-definition: 1, plane turns stereo mode (active stereo display), 2, plane turns stereo mode (red-green stereo Display) 3. Three-dimensional to red-green mode 4. Off mode. Mode control signals for controlling other modules are generated according to these four modes, so that other modules perform corresponding processing in different modes.

Video receiver 110 is used to receive video signals from the front end (can be video signals in digital formats such as HDMI or DVI, or analog video signals), and convert these video signals into TVs suitable for the persimmon TV terminal. The digital format processed by each module in the signal conversion device 100 is, for example, a frame-by-frame digital format video signal according to the BT656 standard.

The storage controller 130 is used to receive the digital signal from the video receiver 110, and is responsible for converting the planar image into a stereoscopic mode image (active stereoscopic display, the first mode), and converting the planar image into a stereoscopic mode image (red Green stereoscopic display, the first mode), the stereoscopic image is converted into a red-green mode image (the third mode), and the processing method and flow of the off mode (the fourth mode) are different. The current frame (or the current view) is cached, and the content of the previous frame (or the previous view) is read at the same time, and then the content of the two frames (or the content of the two views) is sent to the computing module 140 for corresponding processing. calculate.

Calculation module 140, in a specific embodiment of the present invention, the calculation module 140 first judges the current mode according to the mode control signal, if the current mode is the first mode or the second mode, the calculation module 140 obtains the current frame according to the two frames of images Depth information, and if the current mode is the third mode or the fourth mode, the video signal is not processed through the calculation module 140 .

The rendering module 150 first judges the current working mode, if the current working mode is to turn a plane image into a stereoscopic mode image (active stereoscopic display, the first mode) or a plane image into a stereoscopic mode image (active stereoscopic display, the second mode), then the rendering module 150 renders the depth map and the original image sent by the computing module 140 to obtain an active stereoscopic video signal corresponding to the first mode, or obtain a red-green stereoscopic video signal corresponding to the second mode; when the device is currently working in the third mode , the rendering module 150 merges the two views (left view and right view) of the current frame video sent by the storage controller 130; if the current working mode is the fourth mode, the video signal is directly sent to the frame by the storage controller 130 In the rate converter 160, it does not need to be processed by the rendering module 150.

Frame rate converter 160, the frame rate converter 160 receives video signals from the storage controller 130 and the rendering module 150, when the planar image is converted to a stereoscopic mode image (active stereoscopic display, the first mode), and the planar image is converted to a stereoscopic mode Image (red and green stereoscopic display, second mode) and third mode. The video signal from the rendering module 150 is received, and the video signal from the storage controller 130 is received in the fourth mode. Then the frame rate converter 160 converts the frame rate of the generated video according to the requirements of the current TV set, and then sends out the video with the converted frame rate.

A video transmitter 170, the video transmitter 170 is used to convert the digital format suitable for processing by each module in the TV signal conversion device 100 for digital TV terminal into a video signal sent to the TV machine. In one embodiment of the present invention, the converted video signal can be a high-definition digital multimedia video signal, (such as: HDMI digital format, DVI digital format signal), component analog video signal or composite analog video signal, of course, The converted video signal is not limited to the video signal in the above-mentioned format, and may be any format signal that can be realized on a real terminal.

The TV signal conversion device for digital TV terminals proposed by the present invention solves the mismatch problem between the TV transmission system and the TV terminal display, and the device can convert plane video signals into stereoscopic video signals through a certain algorithm. At the same time, it can conveniently and flexibly transform the stereoscopic video signal into a red-green stereoscopic signal for ordinary TV sets, realizing the flexible conversion between video signals, so that users have a better experience when watching TV programs or video programs. The image experience effect enhances the visual effect. In addition, the device is easy to operate, and the entire video signal has a high conversion efficiency.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. a TV signal conversion equipment that is used for digital TV terminal is characterized in that, comprising: video receiver, storage control, computing module, rendering module, frame per second converter, mode controller and video transmitter,

Said mode controller produces mode control signal according to user's configuration, and wherein, said mode control signal is controlled said storage control, said computing module and said rendering module;

Said video receiver be used to receive with the converting video signal to obtain the digital format images of each two field picture;

Said storage control is used to store said digital format images and according to said mode control signal said digital format images is controlled;

Said computing module links to each other with said storage control, is used for according to said control signal said digital format images being carried out depth conversion, to obtain depth image;

Said rendering module links to each other with said storage control with said computing module respectively, is used for according to said mode control signal said depth image or said digital format images being played up, to obtain rendering image;

Said frame per second converter links to each other with said rendering module with said storage control, is used to receive the frame per second with said digital format images of conversion and/or said rendering image, to obtain the frame per second changing image; And

The vision signal of the form that video transmitter, said video transmitter are used to change said frame per second changing image after with the output format conversion.

2. the TV signal conversion equipment that is used for digital TV terminal as claimed in claim 1; It is characterized in that; Said mode control signal comprises first mode control signal, second mode control signal, three-mode control signal and four-mode control signal; Wherein, said first mode control signal is that the three-dimensional pattern signal is changeed on the plane, and said second mode control signal is that red green three-dimensional pattern signal is changeed on the plane; Said three-mode control signal is the three-dimensional red green pattern signal that changes, and said four-mode control signal is the " shut " mode" signal.

3. the TV signal conversion equipment that is used for digital TV terminal as claimed in claim 1; It is characterized in that the vision signal after said vision signal and the format conversion is high definition digital multimedia video signal, component analog video signal or composite analog video signal.

4. the TV signal conversion equipment that is used for digital TV terminal as claimed in claim 2; It is characterized in that; Said storage control is used to store said digital format images and according to said mode control signal said digital format images is controlled, and further comprises:

Judge the classification of said mode control signal;

If said mode control signal is first mode control signal or second mode control signal, then said storage control with the digital format images of present frame and in advance the digital format images of the former frame of the said present frame of buffer memory send to said computing module simultaneously;

If said mode control signal is the three-mode control signal, then said storage control with the left view of said digital format images and in advance the right view of the said digital format images of buffer memory send to said rendering module simultaneously; With

If said mode control signal is the four-mode control signal, then said storage control sends to said frame per second converter with said digital format images.

5. the TV signal conversion equipment that is used for digital TV terminal as claimed in claim 4 is characterized in that said computing module carries out depth conversion according to said mode control signal to said digital format images, further comprises:

Judge the classification of said mode control signal;

If said mode control signal is first mode control signal or second mode control signal; Then said computing module according to the digital format images of present frame and in advance the digital format images of the former frame of the said present frame of buffer memory obtain the depth image of the digital format images of said present frame, and the digital format images of sending said depth image and said present frame to said rendering module.

6. the TV signal conversion equipment that is used for digital TV terminal as claimed in claim 4 is characterized in that, said rendering module is played up said depth image or said digital format images according to said mode control signal, further comprises:

Judge the classification of said mode control signal;

If said mode control signal is first mode control signal; Then said rendering module is played up the digital format images of said depth image and said present frame; Obtaining and the left view and the right view of the digital format images of the said present frame of buffer memory, and successively said left view and right view are sent to said frame per second converter;

If said mode control signal is second mode control signal; Then said rendering module is played up the digital format images of said depth image and said present frame; Obtaining and the red green image of the digital format images of the said present frame of buffer memory, and said red green image is sent to said frame per second converter;

If said mode control signal is the three-mode control signal; Then said rendering module to the left view of said digital format images and in advance the right view of the said digital format images of buffer memory extract red respectively and blue-green composition and synthesizing, to obtain the red green video image of said digital format images.

7. the TV signal conversion equipment that is used for digital TV terminal as claimed in claim 1; It is characterized in that; Said frame per second converter carries out corresponding frame per second conversion according to the demand of different television equipments to said digital format images and/or said rendering image, and sends to said video transmitter to the image after the frame per second conversion.

8. the TV signal conversion equipment that is used for digital TV terminal as claimed in claim 7; It is characterized in that; The image of said video transmitter after to said frame per second conversion carries out format conversion, to obtain high definition of image digital multimedia vision signal, component analog video signal or the composite analog video signal after the said frame per second conversion.

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