| 摘要 |
PURPOSE:To increase the speed of accessing to an image memory by making common use of a large capacity semiconductor memory and providing a memory bus control circuit which opens a gate independently in the stage of reading out and writing of the memory. CONSTITUTION:A memory bus control circuit 17 controls the sequence of a scintillation camera 11, a display 12 and an electronic computer 13 in order to access one image memory 18 time dividedly. The circuit 17 opens a gate to one device for the time determined by every specified time for the data from all the devices 11, 12, 13 connected to the memory 18; therefore, the two of interfaces 14, 15, 16 access to the memory by waiting for the time when the gates for said interfaces are opened. |
