| 摘要 |
An apparatus for supplying optimal data for a hierarchical motion estimator, and a method thereof are provided. This method is performed by a data supplying apparatus including an SDRAM for storing current frame image data and previous frame image data, an SRAM for storing current macro block image data and previous macro block image data, and a motion estimator for generating a motion vector and a sum of absolute difference (SAD). In the data supplying method, data of a predetermined number of bits is supplied to the motion estimator. A predetermined number of data each having a predetermined bit length, including a motion vector and an SAD generated after the motion estimator processes data in units of macro blocks, are converted into data having a length of a certain number of bits formed through the SRAM. The converted data is stored in the SDRAM. Data stored in the SDRAM is read by a host in units of predetermined burst lengths. In the data supplying method, optimal data is supplied by storing only the size of an image block on an upper layer, instead of the entire frame image for the motion estimator, so that a minimum-sized memory can be realized. |
