3D graphic processing device and stereoscopic image display device using the 3D graphic processing device

A stereoscopic image display device comprising:na controller for receiving three-dimensional (3D) graphic data and a synchronization signal, and for outputting a control signal and the 3D graphic data including two-dimensional (2D) image data and 3D graphic information, such that the 3D graphic data is processed differently to be displayed as a 3D stereoscopic image or a 2D single eye image according to the control signal, wherein the 3D graphic information includes depth and surface information of an object;a 3D graphic processor for generating a plurality of stereoscopic matrices used to generate 3D stereoscopic image data for a plurality of viewing points according to the control signal, and transforming the 3D graphic data into the 3D stereoscopic image data using the plurality of stereoscopic matrices when the control signal indicates that the 3D stereoscopic image is to be displayed, and when the control signal indicates that the 2D single eye image is to be displayed, processing the 3D graphic data via a 3D transformation matrix for displaying the 2D single eye image;a driver for generating a driving signal based on the image data output from the 3D graphic processor and the control signal; anda display unit for displaying an image corresponding to the image data according to the driving signal.

A three-dimensional (3D) graphic processing device comprising:na left/right index counter for outputting a left/right index indicating whether an image being processed is a left eye image or a right eye image;a matrix generator for generating a left eye stereoscopic matrix or a right eye stereoscopic matrix according to the left/right index, a 3D transformation matrix for displaying 3D graphic data as a two-dimensional (2D) single eye image, and a user selection parameter, the 3D graphic data including 2D image data and 3D graphic information, such that the 3D graphic data can be processed differently to be displayed as a 3D stereoscopic image or the 2D single eye image, wherein the 3D graphic information includes depth and surface information of an object;a first multiplexer for receiving the stereoscopic matrices and the 3D transformation matrix, selecting one matrix among the received stereoscopic matrices and the 3D transformation matrix based on an externally input 3D activation signal, and outputting the selected matrix, wherein when the 3D activation signal has a first value, the 3D graphic data is processed via the left eye or right eye stereoscopic matrix for displaying the 3D graphic data as the 3D stereoscopic image, and when the 3D activation signal has a second value, the 3D graphic data is processed via the 3D transformation matrix for displaying the 3D graphic data as the 2D single eye image;a matrix calculator for outputting triangle shaped coordinate image data after performing an operation on the matrix output from the first multiplexer and the 3D graphic data; anda request signal outputting unit for outputting a draw command request signal for requesting a next draw command according to the left/right index and the 3D activation signal when the 3D activation signal indicates that the 3D stereoscopic image is to be displayed.

A method for driving a stereoscopic image display device comprising:ngenerating a left eye stereoscopic matrix used to generate left eye image data;generating a right eye stereoscopic matrix used to generate right eye image data;outputting a three-dimensional (3D) transformation matrix used for displaying 3D graphic data as a two-dimensional (2D) image or the left and right eye stereoscopic matrices according to a 3D activation signal, the 3D graphic data including two-dimensional (2D) single eye image data and 3D graphic information, such that the 3D graphic data can be processed differently to be displayed as the 2D single eye image or a 3D stereoscopic image, wherein the 3D graphic information includes depth and surface information of an object; andwhen the left and right eye stereoscopic matrices are output, generating the left eye image data and the right eye image data by performing an operation on the 3D graphic data and the respective left and right eye stereoscopic matrices when the 3D activation signal indicates that the left eye image and the right eye image are to be displayed as the 3D stereoscopic image, and when the 3D activation signal indicates that the 2D single eye image is to be displayed, processing the 3D graphic data via the 3D transformation matrix for displaying the 2D single eye image.