MEMORY CONTROLLER, MEMORY CONTROL METHOD, RATE CONVERTING APPARATUS AND METHOD, VIDEO SIGNAL PROCESSING APPARATUS AND METHOD, PROGRAMS FOR EXECUTING THE METHODS FOR IMPROVING EFFICIENCY OF UTILIZING MEMORIES

摘要

PURPOSE: A memory controller, a memory control method, a rate converting apparatus and method, a video signal processing apparatus and method, and programs for executing the methods are provided to stabilize a data transmission band between the first and second memories to improve efficiency of utilizing the memories. CONSTITUTION: A rate converting apparatus(105) includes the first memory(201), the second memory, and a controller(202). The first memory temporarily stores an input video signal. The second memory writes the video signal from the first memory and reads the video signal at a pixel period and a line period after conversion to obtain an output video signal. The control writing and reading operations of the first and second memories. The controller controls the transmission of video signal from the first memory to the second memory at a predetermined interval.