| 摘要 |
PURPOSE:To obtain a picture data vertical interpolation device to reduce a picture signal through a simple circuit and realize a smoothed reduced picture by conducting vertical interpolation by a delay circuit by prescribed weighting irrespective of a reduction factor. CONSTITUTION:An analog picture signal is turned into digital picture data X by an A/D converter 1, and is inputted to selectors 2 to 5. The delay circuit 12 holds output preceding by one line, and a control circuit 13 switches and connects each of the selectors 2 to 5 in each line, and generates output data Z by weighing the output by adders 6 to 8 and half-value counters 9 to 11. Through this configuration, the vertical interpolation of the arbitrary reduction factor can be realized by one delay circuit 12 to 1H-delay the digital data, and the reduced picture given the vertical interpolation of the arbitrary reduction factor can be obtained through the simple configuration. |
