Assign of pels of a macroblock for compression encoding to a memory sequence in one of banks of DRAM

Abstract

In a video processor for compression encoding a series of picture elements of video data (frames or fields) based on macroblocks in some of the video data, each macroblock consisting of up to a predetermined number, such as 16×16, of picture elements in each video datum, a buffer stores the picture elements of the video datum. Controlled by a control signal produced in responses to the video data, an address signal is generated to assign the picture elements of each macroblock to one of memory sequences in one of parallel accessible banks of a frame memory, which is preferably a synchronous DRAM. The banks are allotted to each macroblock and two macroblocks which are contiguous to this each macroblock in each video datum in each macroblock row and each macroblock column, respectively. In this manner, the banks are allotted, when two in number, to the macroblocks which are arranged in each video datum in a checkered pattern.

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