Abstract:
Provided is a segmented parallax barrier based display device and method with a 2D/3D mode conversion. The parallax barrier based display device comprises; a first panel for playing an image; and a second panel which is located on the front side of the first panel. The second panel comprises; a first liquid crystal for the formation of a parallax barrier which blocks a part of the image played in the first panel; and a second liquid crystal for switching the polarization of light passing through the first liquid crystal. [Reference numerals] (430) Driving unit
Abstract:
PURPOSE: An image display method in a 3D display based on a multi-layer parallax barrier and a 3D display device thereof are provided to supply a more convenient watching environment by reducing blinking, crosstalk, and image reverse phenomena of an image. CONSTITUTION: A display device measures a distance between a viewer and a display device and left and right positions of the viewer (S101). When a parallax barrier switching is needed, an image and barrier control unit outputs a 2D image through an image output unit from a starting point of the switching to an end point (S102,S103). When the parallax barrier switching is not needed, the control unit keeps outputting a 3D image (S104). [Reference numerals] (AA) Start; (BB) End; (S101) Measure a distance between a viewer and a display device and left and right positions of the viewer through measuring unit; (S102) Parallax barrier switching is needed?; (S103) Output a 2D image through an image output unit from a starting point of the switching to an end point; (S104) Keep outputting 3D images
Abstract:
PURPOSE: An image warping processing method and a device thereof are provided to maintain depth perception in a depth discontinuous point by calculating displacement by segment unit and calculating gradient between segments. CONSTITUTION: A decoder receives a stereoscopic image and calculates disparity by segment(S200,S210). The decoder calculates disparity a discontinuity point and disparity saliency based on the calculated segment-wise disparity(S225,S230). When a warping target image is an objective mobile image, the decoder updates warping parameters(S250). The decoder generates a three-dimensional stereoscopic image(S255). [Reference numerals] (AA) No; (BB) Yes; (D235) Scene turning point detection; (S200) Stereo image input; (S205) Image part; (S210) Calculation modification; (S215) Segment calculation modification; (S220) Segment amalgamation; (S225) Modification detection; (S230) Important modification calculation; (S240) Image type decision; (S245) Object moving area?; (S250) Warping renewal; (S255) Image creation
Abstract:
PURPOSE: A stereoscopic image panel, a stereoscopic image display device including the stereoscopic image panel, and a driving method thereof are provided to implement a smooth and free stereoscopic image by minimizing discontinuity generated when moving a barrier for minimizing cross talk. CONSTITUTION: A stereoscopic image panel(500) is positioned at one side of an image panel(400) for providing a stereoscopic image to watchers based on images provided by the image panel. The stereoscopic image panel comprises a liquid crystal layer(510) passing or blocking the image played at the display panel, a first electrode part(520) positioned at one side of the liquid crystal layer, and a second electrode part(530) facing the liquid crystal layer and comprising first through third electrodes(531~533). The stereoscopic image panel comprises a third electrode part(540) facing the other side of the second electrode part.
Abstract:
모뎀 장치에서 고차 QAM 신호에 대한 주파수 편차에 자유로운 프레임 동기 방법 및 장치를 제안한다. 본 발명의 실시예에 따른 모뎀 장치에서 신호 변환에 의한 이진 상관도 기반의 프레임 동기 방법은, QAM 심볼 크기를 이용한 이진 신호로 표현되는 이진 동기 패턴을 구성하는 단계; 수신한 신호를 심볼 단위로 순서대로 이진 신호로 변환하여 이진 수신 벡터를 구성하는 단계; 및 상기 이진 수신 벡터와 상기 이진 동기 패턴 간의 상관도를 기반으로 프레임 동기를 획득하는 단계를 포함한다. 프레임 동기, 주파수 편차, QAM, X-NOR
Abstract:
PURPOSE: A 3D display device and a method based on a divided dual parallax barrier are provided to reduce a cross-talk phenomenon and provide a smooth glassless stereoscopic video according to a watching distance and position. CONSTITUTION: A 3D display device based on a divided dual parallax barrier includes a video panel(410), a dual parallax barrier(420), and a driver(430). The video panel(410) alternately displays a left video column(L) and a right video column(R). The dual parallax barrier(420) includes a first common electrode(s8), a second common electrode(s5), a plurality of a first individual electrodes(s6), a plurality of a second individual electrodes(s2), a plurality of divided electrodes, and a liquid crystal layer(425). The dual parallax barrier(420) blocks a certain part of the displayed video. The driver(430) simultaneously drives part of the first common electrode(s8), the second common electrode(s5), a plurality of a first individual electrodes(s6), a plurality of a second individual electrodes(s2), and a plurality of divided electrodes. The driver(430) separately provides a left video and a right video to a viewer by driving the electrodes based on a distance between the video panel(410) and the viewer. [Reference numerals] (430) Driver; (AA) Segmented Dual Layer Parallax Barrier(DLPB); (BB) Liquid crystal
Abstract:
PURPOSE: A 3D image output method and a device thereof are provided to determine a display image, thereby automatically adjusting brightness, light and shade, or a gamma value of the image. CONSTITUTION: A viewing mode determining unit determines a current viewing mode of an image(S310). A screen adjustment determining unit compares a previous viewing mode with a current viewing mode(S320). When the previous viewing mode is the same as the current viewing mode, a screen adjusting unit maintains a screen state for the previous viewing mode(S330). When the previous viewing mode is not the same as the current viewing mode, the screen adjusting unit changes the screen state into the best screen state for the current viewing mode(S340). [Reference numerals] (AA) Start; (BB) Same case; (CC) Different case; (DD) End; (S310) A viewing mode determining unit determines a current viewing mode of an image; (S320) A screen adjustment determining unit compares a previous viewing mode with a current viewing mode; (S330) A screen adjusting unit maintains a screen state for the previous viewing mode; (S340) The screen adjusting unit changes the screen state into the best screen state for the current viewing mode
Abstract:
PURPOSE: A stereoscopic 3DTV broadcasting service method compatible with an HDTV broadcasting service and a device thereof are provided to supply compatibility between an existing HD broadcasting service and a stereoscopic 3DTV broadcasting service using a program map table. CONSTITUTION: A broadcasting service providing device distinguishes a broadcasting service based on a broadcasting service type(101). The broadcasting service type includes a frame-compatible service and a service-compatible service. The broadcasting service providing device provides compatibility between a 3D broadcasting service and a single stream based broadcasting service(102). The single stream based broadcasting service is a 2D HD(High Definition) broadcasting service.
Abstract:
PURPOSE: An image display device and a method thereof are provided to display a 3D image by a multilayered barrier method. CONSTITUTION: A measuring unit(850) measures the distance between a viewer who watches a 3D image and a screen, right/left locations, and the face slope of the viewer. A barrier controller(860) selects and controls a parallax barrier using a signal measured by the measuring unit. A barrier switch(870) switches a parallax barrier by control of the barrier controller. A multi-layer parallax barrier(820) is turned on/off by switching of the barrier switch to transmit/block light. An LCD panel(810) displays a 3D image by the light.
Abstract:
PURPOSE: A video encoding apparatus and quantization matrix transforming apparatus for the same are provided to remove quantization matrix information of a video encoding apparatus and to increase coding efficiency. CONSTITUTION: A mode selecting unit(112) selects a prediction mode in an image macro block. A quantization matrix transforming unit(114) transforms a preset quantization matrix according to the prediction mode. A residual signal generating unit(116) calculates difference between a prediction block and an image macro block. The residual signal generating unit generates a residual signal. The prediction block is generated by using the prediction mode. A quantization unit(118) quantizes the residual signal.