KR20020028167A - Real time 3D screen conversion and watching apparatus - Google Patents

Abstract

PURPOSE: A device for converting and watching a real time stereo-scopic image is provided to convert 2-dimensional programs into 3-dimensional stereo-scopic images, so as to enable a real-time watching as well as reducing a noise of a video signal generated while the converting process and automatically compensating picture quality. CONSTITUTION: A horizontal/vertical synchronous separator(102) separates a horizontal synchronous signal from a vertical synchronous signal from a 2-dimensional video signal. A horizontal synchronous delay pulse generator(104) generates a triangular wave for synchronization delay of horizontal synchronous sections. A triangular wave generator(106) generates a triangular wave in an even-numbered field section among vertical synchronous sections. The first differential amplifier(108) performs a differential amplification to modulate triangular pulses into horizontal synchronous signals. The second differential amplifier(110) performs a differential amplification to re-modulate the modulated horizontal synchronous signals into 3-dimensional stereo-scopic images. An advanced pulse generator(112) generates a progress pulse before a vertical synchronous signal edge separated from the separator(102) to compensate a response time delay. An infrared pulse generator(114) generates a pulse for driving infrared rays. An AND logic circuit(116) performs an AND operation for the driving pulses of the advanced pulse generator(112) and the infrared pulse generator(114). An infrared output unit(118) outputs an infrared driving signal. A wireless LCD shutter glass(120) inputs a 3-dimensional stereo-scopic image by infrared rays, and watches left/right images according to odd-numbered/even-numbered fields.

Description

Real time 3D screen conversion and watching apparatus}

The present invention relates to a real-time stereoscopic image conversion and viewing device. In particular, the present invention relates to a stereoscopic image conversion and viewing apparatus capable of converting and viewing programs such as airwaves, satellites, cables, videos, and DVDs received in 2D into 3D stereoscopic images in real time.

In general, a three-dimensional image (three-dimensional image) is an image that gives a three-dimensional feeling as if a person directly sees the subject when viewing the playback when the subject is photographed from different left and right angles at a predetermined distance interval from the subject Say

Methods of implementing such a stereoscopic image include an LCD shutter method, a color filter method, an optical illusion method, and the like. Among them, the LCD shutter method is a method in which two LCD shutters, which are controlled separately, are arranged in front of the left and right eyes, and are alternately opened / closed so that only one image can be viewed at a specific time.

For example, when a video signal displayed on a monitor is viewed through an LCD shutter glass, in the field sequential scanning method, the LEFT image is an odd (ODD) field with respect to the STEREO IMAGE SIGNAL displayed by interlaced scanning of a television. On the other hand, the RIGHT image is scanned in an even field, and then the vertical synchronization signal is synchronized with the LCD shutter glass, and the left LCD shutter of the LCD shutter glass is opened when the odd field scan is performed. In the even field scanning, the right LCD shutter of the LCD shutter glass is opened so that only the RIGHT image can be viewed.

However, the stereoscopic image conversion apparatus using the LCD shutter glass as described above is to convert the programs such as airwaves, satellite, cable, video, DVD, etc. received in two dimensions into three-dimensional stereoscopic images for each device receiving the program. Only when the converter was installed did the viewing constraints for viewing 3D stereoscopic images come.

In addition, in the process of converting a program received in two dimensions to a three-dimensional image in three dimensions, there is a disadvantage that the image quality is generated due to noise.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to convert a 3D stereoscopic image such as airwaves, satellites, cables, video, DVD, etc. received in 2D into a 3D stereoscopic image that can be viewed in real time and It is to provide a viewing device.

Another object of the present invention is to provide a stereoscopic image converting and viewing device capable of automatically correcting image quality while reducing noise of an image signal generated in a process of converting a 2D to 3D stereoscopic image.

As a technical idea for achieving the above object of the present invention

A stereoscopic image viewing apparatus capable of converting a 2D program into a 3D image in real time to view a stereoscopic image, comprising: a horizontal / vertical synchronization separator for separating horizontal and vertical synchronization signals from an input two-dimensional image signal; A horizontal synchronous delay pulse generator for generating a triangular wave for synchronous delay of a horizontal synchronous period by using the horizontal synchronous signal output from the horizontal / vertical synchronous separator; A triangular wave generator for generating a triangular wave in a vertical synchronization section by using a vertical synchronization signal output from the horizontal / vertical synchronization separator; A first differential amplifier for differentially amplifying the triangular wave pulses output from the horizontal synchronous delay pulse generator and the triangular wave generator into horizontal synchronization signals; A second differential amplifier for differentially amplifying the horizontal synchronization signal modulated from the first differential amplifier to remodulate the 3D stereoscopic image; An advanced pulse generator for generating a progress pulse to correct a response time delay of the vertical synchronization signal divided from the horizontal / vertical synchronization separator; An infrared pulse generator for generating a pulse for infrared driving; An AND logic circuit for ANDing the driving pulses generated from the advanced pulse generator and the infrared pulse generator; An infrared output unit for outputting an infrared drive signal which is ANDed from the AND logic circuit; Provided is a real-time stereoscopic image converting and viewing apparatus including a wireless LCD shutter glass for receiving a 3D stereoscopic image output from the infrared output unit as infrared (wireless) and viewing left and right images for each odd / even field.

1 is a block diagram of a real-time stereoscopic image conversion and viewing apparatus according to the present invention

2 is a timing diagram of a real-time stereoscopic image conversion and viewing apparatus according to the present invention;

<Description of Symbols for Major Parts of Drawings>

102: horizontal / vertical synchronization separator 104: horizontal synchronization delay pulse generator

106: triangle wave generator 108: first differential amplifier

110: second differential amplifier 114: infrared pulse generator

112: advanced pulse generator

116 AND logic circuit 118 Infrared output unit

120: Wireless LCD Shutter Glass

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

1 is a block diagram of a real-time stereoscopic image conversion and viewing apparatus according to the present invention. 2 is a timing diagram of a real-time stereoscopic image conversion and viewing apparatus according to the present invention.

1, a horizontal / vertical synchronization separator 102 for separating horizontal and vertical synchronization signals from a two-dimensional image signal input through an input terminal such as a TV, a VTR, a cable, and the like; A horizontal synchronous delay pulse generator 104 generating a triangular wave for synchronous delay of a horizontal synchronous section by using the horizontal synchronous signal output from the horizontal / vertical synchronous separator 102; A triangular wave generator 106 for generating a triangular wave in an even field section of a vertical synchronization section by using the vertical synchronization signal output from the horizontal / vertical synchronization separator 102; A first differential amplifier 108 for differentially amplifying the triangular wave pulses output from the horizontal synchronous delay pulse generating unit 104 and the triangular wave generating unit 106 into a horizontal synchronizing signal; A second differential amplifier (110) for differentially amplifying the horizontal synchronization signal modulated from the first differential amplifier (108) into a three-dimensional stereoscopic image; An advanced pulse generator 112 for generating a traveling pulse before the vertical synchronization signal edge separated from the horizontal / vertical synchronization separator 102 to correct the response time delay of the LCD shutter glass; An infrared pulse generator 114 for generating a pulse for infrared driving; An AND logic circuit (116) for ANDing the driving pulses generated from the advanced pulse generator (112) and the infrared pulse generator (114); An infrared output unit (118) for outputting an infrared drive signal that is ANDed from the AND logic circuit (116); The 3D stereoscopic image output from the infrared output unit 118 is an infrared ray (wireless) and receives a wireless LCD shutter glass 120 for viewing left and right images for each odd / even field.

In the present invention, an interlace method is applied to the stereoscopic image conversion method. The stereoscopic image used in the interlace method includes two images on the left and right and an odd line on the left and an even line on the right according to the resolution of the graphic mode. On the other side) to produce a single image.

That is, when the image is displayed on the screen and the monitor is interlaced and the odd scan line field and the even scan line field are alternately displayed on the screen according to the period of the vertical frequency displayed on the monitor, the left and right images are alternately displayed by the synthesized image data. Is displayed.

At this time, when the left and right LCDs of the LCD shutter glass are alternately displayed in accordance with the vertical frequency synchronization, only the image suitable for each eye is displayed so that the user feels the stereoscopic shape.

The operation of the real-time stereoscopic image conversion and viewing device configured as described above will be described with reference to the timing diagram shown in FIG. 2.

First, a 2D video signal (FIG. 2A) from an input terminal of a TV, a VTR, a cable, or the like is input through a horizontal / vertical synchronizing separator 102, and the 2D video signal is inputted through a horizontal synchronizing signal (FIG. 2B). ) And a vertical synchronization signal (Fig. 2C).

The horizontal synchronizing signal output from the horizontal / vertical synchronizing separator 102 is input to the horizontal synchronizing delay pulse generating unit 104 to generate a triangular wave (FIG. 2E) for synchronizing delay in a horizontal synchronizing period (eg, 3 ms). The vertical synchronizing signal output from the horizontal / vertical synchronizing separator 102 is input to the triangular wave generating unit 106 to generate triangular waves only in even field sections of the vertical synchronizing section.

In this state, the first differential amplifier 108 differentially amplifies the triangular wave pulses output from the horizontal synchronous delay pulse generating unit 104 and the triangular wave generating unit 106 and outputs the modulated horizontal synchronizing signal (FIG. 2F).

Thereafter, the second differential amplifier 110 differentially amplifies and remodulates the horizontal synchronization signal modulated from the first differential amplifier 108 to output a three-dimensional stereoscopic image (FIG. 2G).

At this time, the noise of the image signal generated during the conversion from the 2D to the 3D stereoscopic image is reduced and the image quality is corrected.

On the other hand, in the advanced pulse generator 112, a progress pulse for correcting the response time delay of the LCD shutter glass before the edge of the vertical synchronizing signal from the horizontal / vertical synchronizing separator 102 is performed. (Infrared Output Square Wave) (FIG. 2H) is generated, and the infrared pulse generator 114 generates pulses (FIG. 2I) for infrared driving.

In this state, the AND logic circuit 116 performs an AND operation on the driving pulses (FIG. 2J) generated from the advanced pulse generator 112 and the infrared pulse generator 114, and outputs them to the infrared output unit 118. .

Finally, the wireless LCD shutter glass 120 receives a three-dimensional stereoscopic image from the infrared output unit 118 as infrared (wireless) and can stereoscopically view left and right images for each odd / even field.

That is, the wireless LCD shutter glass 120 distinguishes the odd and even fields from the stereoscopic image signal, and when the odd field is input, turns on the left eye liquid crystal shutter and turns off the right eye liquid crystal shutter to view the left eye image only in the left eye. When the even field is input, the right eye liquid crystal shutter is turned on and the left eye liquid crystal shutter is turned off so that the right eye image is viewed only by the right eye, so that the 2D program can be converted into a 3D stereoscopic image in real time for viewing.

As described above, according to the real-time stereoscopic image conversion and viewing apparatus according to the present invention has the following advantages.

First, the conventional 2D to 3D stereoscopic image conversion technology delays the horizontal synchronization period of one field of odd or even fields by a constant time, but lacks the sense of presence and three-dimensionality that the image enters into the screen constantly. It is a technology that combines a wok shot by a three-dimensional camera (a near-field subject is captured at the bottom of the camera angle, and a far-away subject is captured toward the top), and linearly controls horizontal sync signals of odd and even fields, respectively. As you look closer and closer to the top of the screen, you can create a three-dimensional image with a closer look.

Second, according to the present invention, by converting programs such as airwaves, satellites, cables, videos, DVDs, etc. received in 2D into 3D stereoscopic images in real time, various conventional image programs can be easily converted into 3D stereoscopic images. Not only can it be converted, but it can also be applied to products such as TVs, projectors, and monitors, thereby increasing its versatility.

Third, according to the present invention, there is an advantage in that image quality can be automatically corrected while reducing noise of an image signal generated in a process of converting a 2D to a 3D stereoscopic image.

Claims (4)

In the three-dimensional image viewing device that can be converted to a 3D image in real time to watch a three-dimensional image, A horizontal / vertical synchronizing separator for separating horizontal and vertical synchronizing signals from the input two-dimensional image signal; A horizontal synchronous delay pulse generator for generating a triangular wave for synchronous delay of a horizontal synchronous period by using the horizontal synchronous signal output from the horizontal / vertical synchronous separator; A triangular wave generator for generating a triangular wave in a vertical synchronization section by using a vertical synchronization signal output from the horizontal / vertical synchronization separator; A first differential amplifier for differentially amplifying the triangular wave pulses output from the horizontal synchronous delay pulse generator and the triangular wave generator into horizontal synchronization signals; A second differential amplifier for differentially amplifying the horizontal synchronization signal modulated from the first differential amplifier to remodulate the 3D stereoscopic image; An advanced pulse generator for generating a progress pulse to correct a response time delay of the vertical synchronization signal separated from the horizontal / vertical synchronization separator; An infrared pulse generator for generating a pulse for infrared driving; An AND logic circuit for ANDing the driving pulses generated from the advanced pulse generator and the infrared pulse generator; An infrared output unit for outputting an infrared drive signal which is ANDed from the AND logic circuit; Real-time stereoscopic image conversion and viewing device comprising a wireless LCD shutter glass for receiving the three-dimensional stereoscopic image output from the infrared output unit as infrared (wireless) to watch the left / right image for each odd / even field . The apparatus of claim 1, wherein the triangular wave generator generates triangular waves only in even-numbered field sections among vertical synchronization sections. The real-time stereoscopic image converting and viewing apparatus according to claim 1, wherein the advanced pulse generator generates a traveling pulse before an edge of the vertical synchronization signal to correct a response time delay of the LCD shutter glass. The apparatus of claim 1, wherein the 3D stereoscopic image is converted into an interlace method.