| 摘要 |
PURPOSE:To detect a moving vector with the connection of the hardware subsequently without modifying the circuit constitution even if the range of a moving vector able to be detected is expanded by obtaining a frame difference for each sample vector between all preceding frame representative points in the vector detection range and an existing signal in time parallel. CONSTITUTION:The circuit consists of a representative point subsample section 1, a buffer memory 2, a representative point delay circuit and output section 3, subtractors 4-9, frame difference addition and memory sections 10-15, an address generating section 16, a minimum value detection section 17 and a vector conversion section 18. Then the frame difference absolute value for each index vector between the existing signal and all preceding frame representative points in the vector detection range is obtained in time parallel. Then no buffer memory for existing signal is required and even if the range of the moving vector able to be detected is expanded, the moving vector is detected by having only to connect the additional hardware to the hardware before expansion subsequently without changing the circuit constitution. |
