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    • 89. 发明授权
    • Motion vector detecting apparatus for video telephone/teleconference
systems
    • 用于视频电话/电话会议系统的运动矢量检测装置
    • US5142361A
    • 1992-08-25
    • US717894
    • 1991-06-19
    • Masashi TayamaHiroshi FujiwaraMasanori Maruyama
    • Masashi TayamaHiroshi FujiwaraMasanori Maruyama
    • H04N19/50G06T7/20G06T9/00G06T13/00G06T13/80H03M7/36H04N7/14H04N7/15H04N11/04H04N19/423H04N19/436H04N19/503H04N19/51
    • G06F12/0862G06F12/0875G06F12/0897G06T7/2026
    • A motion vector detecting apparatus for detecting motion vectors based on a current frame data and the preceding frame data. In the motion vector detecting apparatus, first and second memories are provided in order to store the current frame data and the preceding frame data. Additionally, a number of first cache memories, a number of second cache memories, a control circuit, and a motion vector calculation circuit are provided. The control circuit selects the input cache memories into which pixel data are to be written, and the output cache memories, from which pixel data are to be read out, from the first and second cache memories, so that the input cache memories and the output cache memories have no redundant cache memory. Pixel data corresponding to the detection image blocks stored in the first memory and pixel data corresponding to the search image blocks stored in the second memory are sequentially written in the selected input cache memories of the first and second cache memories. Simultaneously, the pixel data corresponding to the detection image blocks and the search image blocks are sequentially read out from the selected output cache memories, and are sequentially supplied to the motion vector calculation circuit.
    • 一种用于基于当前帧数据和前一帧数据检测运动矢量的运动矢量检测装置。 在运动矢量检测装置中,为了存储当前帧数据和前一帧数据,提供第一和第二存储器。 此外,提供了多个第一高速缓存存储器,多个第二高速缓冲存储器,控制电路和运动矢量计算电路。 控制电路从第一和第二高速缓冲存储器中选择要写入像素数据的输入高速缓存存储器和从其读出像素数据的输出高速缓冲存储器,以使得输入高速缓冲存储器和输出 缓存存储器没有冗余高速缓存。 对应于存储在第一存储器中的检测图像块的像素数据和与存储在第二存储器中的搜索图像块相对应的像素数据被顺序地写入到第一和第二高速缓冲存储器的所选择的输入高速缓冲存储器中。 同时,从所选择的输出高速缓冲存储器顺序地读出与检测图像块和搜索图像块相对应的像素数据,并且被依次提供给运动矢量计算电路。