| 摘要 |
A buffer control device is provided to efficiently process bit stream processed in a video decoder device in real time, by enabling a memory access unit to access a memory device more efficiently without using many clock cycles. In a buffer control device of a processor block(100) accessing a memory device through a ring buffer(210) included in the memory device, a temporal storing part(130) stores the uppermost address and the lowermost address of the ring buffer and stores an address of the ring buffer being accessed by the processor block. A buffer control part(150) returns the address of an excessive part from the lowermost address of the ring buffer and then designates an address in the ring buffer, if the uppermost address of the ring buffer exceeds, by using address information stored in the temporal storing part, and controls to read data stored in the designated address from the memory device.
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