Memory system for processing of digital video signal

摘要

The memory system accesses data in block units, and contains a recognition arrangement for detecting, whether the memory system should execute a read/write process in a full-pixel mode or a half-pixel mode. A control arrangement is provided for controlling the access on data in a unit of blocks of m times n bits, if the recognition arrangement recognizes that the system should work in the full-pixel mode or the access on data in a unit of blocks of m+1 times n+1 bits, if it recognizes that the system should work in half-pixel mode at an read access. A block of 16 times 16 bits is preferably accessed in the full-pixel modus.