Flash Memory Data Validity via Index Region Counting

The patent applies preliminary action by recording the count of valid bits in the index region before actual data write operations. This allows the system to pre-establish validation information, eliminating the need for subsequent write operations to determine data validity. The count value is stored in advance in the index region corresponding to each sector, enabling rapid validity checks without impacting write performance.

The patent implements beforehand cushioning by storing the count of valid bits in the index region before data operations commence. This pre-recorded count serves as a cushion against power interruptions, as it provides a reference value that remains valid even if the operation is interrupted. When validation is needed, the system compares the current data against this pre-established count, ensuring accurate validation results regardless of power interruption timing.

The patent merges the validation information storage with the existing index region structure of the flash memory. Instead of performing separate write operations to update validation information, the count of valid bits is combined into the index region that already exists for each sector. This merging eliminates redundant operations and integrates validation tracking into the normal memory structure, significantly reducing the time required for validity determination.