Optical Disk Buffer Area Management via Physical and Logical Position Data

The patent applies preliminary action by forming the physical buffer area in advance during the quick format process. The buffer area is physically recorded on the disc during initial formatting, so that when the finalize process is later performed, the buffer area already exists and only needs to be logically recognized rather than physically created again. This eliminates redundant physical recording operations and reduces finalize process time.

The patent uses copying by creating a logical buffer area that references the existing physical buffer area. Instead of physically recreating the buffer area during finalize, the system creates a logical representation that points to the pre-formed physical buffer area. This logical copy allows read-only apparatus compatibility to be achieved without the time-consuming physical recording process.

The patent segments the buffer area formation into two distinct parts: a physical buffer area formed during quick format, and a logical buffer area formed during finalize. The physical buffer area contains the actual recorded data structure, while the logical buffer area provides the interface for read-only compatibility. This segmentation allows the time-consuming physical formation to occur once during quick format, while finalize only needs to create the lighter logical structure.

The patent applies partial action by performing only the necessary minimum during quick format (forming physical buffer area) and completing the remaining portion during finalize (forming logical buffer area). This divides the complete buffer area formation process into two stages, allowing faster initial formatting while still achieving full compatibility later.

The patent applies self-service by having the physical buffer area formed during quick format serve the dual purpose of both quick format functionality and read-only compatibility. The pre-formed physical buffer area automatically serves as the foundation for read-only access without requiring additional physical recording during finalize, eliminating redundant energy-consuming operations while maintaining reliability.

The patent merges the functions of the physical buffer area and logical buffer area so that the physical buffer area formed during quick format serves both the recordable medium operations and the read-only compatibility requirements. This merging eliminates the need for separate physical recording operations during finalize, reducing resource consumption while maintaining read-only access reliability.