| 摘要 |
System for generating left and right video channels to drive a stereoscopic display device 44 using only one frame buffer memory 16 of a computer graphics pipeline, comprises window circuitry 22 for defining first and second windows 52, 54 within the frame buffer 16. The first and second windows 52, 54 store pixel data corresponding to left and right views, respectively, of a stereoscopic image. A stereo output system is operable to present pixel data read from the first window 52 within the frame buffer memory 16 to the pixel data input 36 of a first video encoder system 32, and to present pixel data read from the second window 54 within the frame buffer 16 memory to the pixel data input 38 of a second video encoder system 34. Video format signals that are output by the first and second video encoder systems 32, 34 comprise the left and right video channels. Position and size information are stored within a memory device 22. As pixel data is read serially out of the frame buffer memory 16, a count is maintained to keep track of the coordinates of the pixels. The coordinates for a given pixel are compared with the stored position and size information. The pixel is output to left or right video encoders 32, 34 if it is determined that the pixel corresponds to the first or second window 52, 54, respectively. |
