METHOD FOR CONTROLLING READ OF IMAGE DATA TO RING BUFFER AND CONTROLLER FOR CONTROLLING THE READ

摘要

PROBLEM TO BE SOLVED: To provide an image data read controller for replenishing the image data of an optional direction two-dimensionally to a ring buffer area. SOLUTION: An image data management means 11 for managing the write/ read of the image data to a memory space manages the image data to be read to a ring buffer in the rectangular rear of the memory space and a ring buffer management means 12 for managing image data fetch to the ring buffer manages an address next to the end address of the ring buffer of the addresses continued from a start address to the end address as the start address. A replenishing data management means 13 manages the replenishing area of the memory space of the image data to be replenished to the ring buffer and a replenishing area management means 14 for managing the area to be replenished of the ring buffer manages the area based on a reference address inside the ring buffer. The image data of the optional direction of the memory space are replenished to the ring buffer.