| 摘要 |
<p>PURPOSE:To speed up the execution of cutout and synthesis without path neck, by calculating the address of data to be transferred based on the length of required part and not required part of head address storing two-dimensional picture scanning data. CONSTITUTION:An address switch 10 of a memory controller 5 transmits data transmitted from an address bus 6 to a memory 4 when a mode selection signal 50/ transmitted from a control section 30 indicates the mode 1(a mode using a memory 4 as a main storage device of a central processor 3). When the signal 50/ indicates the mode 2(a mode using a memory 4 as a cutout/synthesis device of a partial diagram), a data 507 transmitted from an address controlling section 20 is transmitted to the memory 4 as an address data. The address controlling section 20 calculates the transferred address and transfer address at the mode 2.</p> |
