| 摘要 |
PURPOSE:To facilitate observation by providing three registers for a positive, a negative, and an optional value to registers where a window level and a window width are set, making an adjustment, and magnifying only a desired part. CONSTITUTION:The registers 17-19 hold the small positive value, ''0'', and small negative value, which are inputted to a register 23 through normally open contacts 20 and 22 and a normally closed contact 21. The output of a register 23 is inputted to a window processing means 14 through a register 9 to constitute a window level setting means 12. The outputs of registers 23 and 9 are fed back to an input side. For example, when the register 17 holds ''1'', the contact 20 is held made continuously and the contacts 21 and 22 are broken, so that the output of the register 23 increases in the order of 1, 2, 3... and the output of the register 9 increases in the order of 1, 3, 6, 10.... The contact 21 is used for a fine adjustment and the contact 22 outputs a negative output similarly. A window width setting means 13 is of the same structure. Consequently, a desired part is magnified and observed closely. |
