| 摘要 |
<p>PURPOSE:To exactly snow vertical correlation so as not to generate dot interference. CONSTITUTION:A MIN circuit 31 compares the output of a MAX circuit 14 for selecting larger one of the inverse of 0R and 1H with the output of a MAX circuit 15 for selecting larger one of 1H and the inverse of 2H, and smaller one of '0' levels is selected. A MAX circuit 32 compares the output of a MIN circuit 17 for selecting smaller one of the inverse of 0H and 1H with the output of a MIN circuit 18 for selecting smaller one of 1H and the inverse of 2H, and larger one of '0' levels is selected. Then, the outputs of the MIN circuit 31 and the MAX circuit 32 are added.</p> |
