Multi-Angle Data Reproduction via Unified Timestamps
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Solution Overview
Problem
Existing methods for reproducing multi-angle data fail to ensure seamless playback during angle changes due to the use of independent arrival time stamps, leading to potential pauses or discontinuities in the video stream.
Innovation Solution
The implementation of an information storage medium with AV data recorded in clips, each containing multiple jump points with consistent presentation time information, allowing seamless reproduction by referencing these jump points during angle changes, and maintaining consistent arrival time information to prevent buffer overflow or underflow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If independent arrival time stamps are added to each angle data, then angle data can be reproduced according to their respective timestamps, but seamless reproduction cannot be ensured during angle change
Solution Approach 1:
The patent merges the arrival time stamp information from multiple angle data into a unified reference time system. Instead of maintaining independent timestamps for each angle, the system uses a common reference time that all angle data share, allowing seamless transitions between angles without timestamp conflicts or playback discontinuities.
Solution Approach 2:
The patent performs preliminary synchronization by establishing reference time information before angle changes occur. The system pre-aligns the arrival time stamps of different angle data to a common reference framework, so that when an angle change is requested, the transition can occur seamlessly without requiring real-time timestamp adjustment.
2Reliability
If multi-angle data is divided into units and recorded in alternating fashion, then seamless reproduction can be achieved, but the structure becomes more complex requiring additional tracing information
Solution Approach 1:
The patent extracts the angle identification and positioning information from the interleaved data structure and stores it separately as metadata. This allows the main AV data to be stored in a simpler, more efficient manner while the extracted indexing information handles the complexity of angle tracking and data location, reducing overall system complexity.
Solution Approach 2:
The patent introduces an intermediary indexing structure that mediates between the interleaved multi-angle data and the reproduction process. This intermediary layer provides the tracing information needed to locate and reproduce data from different angles without requiring the main data structure to be overly complex, separating the complexity of angle management from the core AV data storage.
3Productivity
If AV data is divided into clips with jump points, then angle switching becomes efficient, but ensuring consistent timing information across clips becomes more difficult
Solution Approach 1:
The patent creates a universal reference time system that serves multiple clips and angles simultaneously. The reference time information is designed to be universally applicable across all clips and angle data, allowing the same timing mechanism to handle angle switching, clip transitions, and synchronization without requiring separate timing systems for each function.
Solution Approach 2:
The patent changes the timing parameter representation by using reference time offsets relative to a common origin rather than absolute timestamps for each clip. This parameter transformation allows consistent timing information to be maintained across clips with different start times and durations, enabling efficient angle switching while preserving timing accuracy through mathematical relationship preservation.
Data Source
AI summary
An apparatus and method for reproducing multi-angle data in a seamless manner, even during a change of angle, and an information storage medium on which the multi-angle data is recorded. AV data divided into clips, which are recording units, is recorded on the information storage medium. Additional information regarding jump points is recorded on a space of the information storage medium other than where the clips are recorded. The apparatus for reproducing the multi-angle data includes a reading unit which reads data from the information storage medium, and a reproducing unit which reproduces the data read by the reading unit by searching for and reproducing clips corresponding to the read data when the read data is multi-angle data, and, if there is an angle change command, reproducing clips for a new angle from a jump point of the clip for the new angle.