HEIF File Restoration via Embedded Recovery Data

The patent applies preliminary action by writing restoration data into the HEIF file before the writing process is completed. This restoration data serves as a safety mechanism that can recover the file if power interruption occurs during the writing of multiple images, thus preventing data loss while maintaining the ability to store a large number of images.

By pre-writing the restoration data and file header information before completing the full image writing process, the system ensures that even if writing is interrupted, the file structure remains valid. This allows faster writing speeds without sacrificing file format correctness, as the critical structural elements are already in place.

The patent uses copying by creating a simplified version of the file structure (restoration data) that can be independently written and used for recovery. This restoration data is a copy of the essential file header and structure information, which can be processed separately from the full image data, thereby reducing the complexity of the recovery process while maintaining high reliability.