SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
The horizontal scaling is done by stepping across the target row and interpolating target pixels based on source pixels. Accumulator points to the source pixel that corresponds to the target pixel.
Figure 10-25 shows an up-scaling example.
Figure 10-25 Polyphase Filtering Example