| 摘要 |
PURPOSE:To execute the movement of a visual field by a simple constitution by adding a line offset amount to a read-out address and setting it as a read-out address to a line memory, and also, adding a horizontal offset amount to a write address and setting it as a write address to a frame memory. CONSTITUTION:First of all, by an ultrasonic probe 2, an ultrasonic beam 3 is radiated into a living body, and an ultrasonic echo signal from the living body is detected, and outputted. Subsequently, by a transfer address generator 10, a read-out line address R for reading out data from a line buffer memory 6, and a write screen horizontal address X and a write screen vertical address Y for writing data to frame memory 7 are outputted. On the other hand, by an offset generator 11, a line address offset amount R and a screen horizontal address offset amount X, based on user's designation are outputted. They are added by adders 12, 13, respectively. Based on this data, it is displayed on a monitor 9. |
