Interleaved Recording Medium for Seamless 2D and 3D Video Playback

The video stream is divided into multiple data blocks, each containing a complete GOP (Group of Pictures). These segmented data blocks are then distributed across different layers and positions on the optical disc, allowing the playback device to retrieve multiple segments in parallel or with smaller jumps, thus maintaining buffer continuity while simplifying access patterns.

The patent transitions from one-dimensional sequential arrangement to two-dimensional arrangement across multiple recording layers. Data blocks are positioned on different layers (Layer 0, Layer 1, etc.) at strategically chosen locations, enabling the pickup to perform shorter jumps between layers and positions, reducing the impact of long seek times on buffer continuity.

The system performs preliminary actions by pre-reading and pre-decoding data blocks before they are actually needed for playback. The playback device reads multiple data blocks in advance, decodes them ahead of time, and stores the decoded video frames in buffer memory, so that when a long jump is required, the buffer already contains sufficient decoded data to maintain continuous playback without requiring large buffer capacity.

The playback device skips the long jump delay by performing rapid pre-reading and pre-decoding of subsequent data blocks. Instead of waiting for data during long jumps, the system rushes through the data retrieval and decoding process in advance, filling the buffer before the jump occurs, thereby maintaining playback continuity with minimal buffer capacity.