| 摘要 |
<p>PURPOSE:To simultaneously attain access of write and readout and to suppress the increase in the memory capacity by jumping a write pointer to the next memory block when a readout pointer designates the memory block designated by the write pointer. CONSTITUTION:When a readout pointer 25 moves and designates the same memory block as the memory block designated by a write pointer 24, e.g., 22-1, a control is implemented to jump the write pointer 24. That is, since the write pointer 24 and the readout pointer 25 always exist in different memory blocks, the write access and readout access are applied simultaneously to attain high speed accessing. In case of jump of the write pointer 24, the address in the jumped original memory block is stored and the readout pointer 25 uses an address as an index to be jumped to the next memory block, then no contradiction takes place. Thus, the increase in the memory capacity is minimized.</p> |
