इंटरलीविंग
इसे इस नाम से भी जाना जाता है:
block interleaving
The process of distributing data and error correction codewords across multiple blocks before placing them in the QR code. Interleaving ensures that localised damage (e.g., a scratch across one area) affects codewords from different blocks, enabling each block's Reed-Solomon decoder to correct its share.