| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the image processing speed by generating each address in accordance with the instruction from an instruction decoder in a synchronous manner with strobe signal. SOLUTION: The instruction decoder 5' receives the instruction to read the data, and outputs selected signal to a video memory. When the instruction decoder 5' outputs the address data of line address to an address signal generating circuit 2 at the timing of the output of the line address strobe signal, the video memory receives the address data from the address signal generating circuit 2 to select the corresponding memory region. When a video memory control signal generating circuit 9' generates the column address strobe signal, the instruction decoder 5' outputs the address data of the column address to the address signal generating circuit 2 at the timing, and selects the column address present in the selected line address.</p> |
