DATA RECORDING METHOD, DATA RECORDING DEVICE, DATA RECORDING MEDIUM, DATA REPRODUCTION METHOD, AND DATA REPRODUCTION DEVICE

摘要

In a write once medium, some recording capacity is used in vain when updating an index file for AV file management. To reduce the waste, a new index file is created upon updating and thumbnail image data in the existing index file is referenced. Simultaneously with this, by storing attribute information in a new index file, access to the most necessary information can be performed at a higher speed.