| 摘要 |
PURPOSE:To make it possible to magnify/reduce a picture at an optional scale without requiring an optical means. CONSTITUTION:At the time of magnifying (1.7 times e.g.) a scale, the reciprocal (0.588) of 1.7 is set up in an increment value register 1, the initial value of a source address is set up in a current address register 3 and the initial value of a destination address is set up in a destination address counter 4. In each increment of the destination address, the value of the contents of the register 1 is added to the register 3 by an adder 2 and only the integer part of the added result is outputted as a source address. |
