Image Rotation Memory Matrix Organization

The patent applies preliminary action by pre-organizing image data in memory during the storage phase. The memory is configured to store pixels in an interleaved pattern where pixels from different rows are alternately placed (e.g., row 0, row 2, row 4 in one sequence and row 1, row 3, row 5 in another). This preliminary arrangement ensures that when rotation is needed, the data can be fetched efficiently without requiring multiple RAS and precharge cycles, thus resolving the contradiction between non-rotated image efficiency and rotated image performance.

The patent applies segmentation by dividing the image data into alternating row segments that are stored in an interleaved manner. Instead of storing all pixels from one row contiguously, the memory is segmented to hold pixels from multiple rows in an alternating sequence. This segmentation allows the rotation operation to access pixels sequentially from a single memory page, maintaining high memory access efficiency while achieving full rotation capability.

The patent applies parameter changes by modifying the memory access pattern and data organization rather than changing the fundamental memory technology. By reorganizing how pixels are stored in DRAM/SDRAM (interleaved row storage), the system achieves SRAM-like access speeds for rotation operations while maintaining the cost advantages of DRAM/SDRAM. This parameter change in data organization allows the system to overcome the inherent speed limitations of DRAM/SDRAM without switching to more expensive memory technology.