PIXEL CALCULATING DEVICE

摘要

A pixel calculating device for performing filtering for vertical reduction, comprising a decoding section (401) for decoding compressed video data, a frame memory (402) for holding decoded frame data, a filter section (403) for vertical reduction by vertically filtering the frame data, a buffer memory (404) for holding a vertically reduced image outputted from the vertical filter section, and a control section (406) for controlling a filter means not to overrun and underrun according to the decoded state of the frame data decoded by decoding means and the filtered state of the frame data filtered by the filter means.