Control device and method for video frequency decoding buffer zone

The present invention discloses a video decoding apparatus and method for controlling a buffer, the buffer means comprises a control module, the reference frame acquisition control module, the control module stores the decoded frame, the display frame acquisition control module, a display control module, wherein the said buffer control module for calculating a current decoded image storage address is obtained, the current address of the reference image, display image address, and the above addresses are transmitted to the reference frame corresponding to acquisition control module, the control module stores the decoded frame, the display frame acquisition control module ; the present invention achieve synergy management decoded image, the reference image and the display image buffer by a small capacity, coordinated control of the decoded video display without occupying a large amount of RAM space thereby reducing the cost of the decoder chip.