Stream Synchronization via Reference-Clock Update Signaling
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Solution Overview
Problem
Conventional methods for synchronizing independently transmitted streams require extensive processing to analyze time information for timeline extension, leading to inefficiencies in managing and reproducing content.
Innovation Solution
A transmitting method that includes timing update identification information to indicate whether a correspondence relationship between reference clocks has been updated, allowing the receiving device to efficiently determine and update the synchronization without full analysis of time information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods analyze time information for timeline extension, then synchronization between streams is achieved, but processing overhead increases
Solution Approach 1:
The transmitting device performs preliminary action by explicitly marking timing updates in advance. The flag in the auxiliary data indicates whether timing update identification information is present, allowing the receiving device to prepare for synchronization updates without analyzing every time information detail, thus reducing processing overhead while maintaining synchronization reliability
Solution Approach 2:
The invention extracts only the essential synchronization information (timing update identification information and flag) from the complete time information. By taking out only the critical update markers rather than processing all time data, the receiving device achieves synchronization without the full processing burden of analyzing every time parameter
2Measurement precision
If the receiving device performs full analysis of time information, then timeline extension is accurate, but processing time increases
Solution Approach 1:
The receiving device applies partial action by processing only the essential timing update identification information and flag rather than performing full analysis of all time information. This partial processing approach maintains sufficient accuracy for timeline extension while significantly reducing processing time, avoiding the excessive action of analyzing every time parameter in detail
3Productivity
If timing update identification information is added to streams, then synchronization efficiency improves, but data structure complexity increases
Solution Approach 1:
The invention segments the timing information into distinct functional elements: a flag indicating the presence of timing update identification information, the timing update identification information itself, and the associated time parameters. This segmentation allows the receiving device to process synchronization efficiently by handling each element separately, improving productivity without creating overwhelming data structure complexity
Data Source
AI summary
A transmitting method according to one aspect of the present disclosure includes transmitting a first stream, the first stream including: timing update identification information id1 indicating whether or not a correspondence relationship between a first reference clock and a second reference clock has been updated, the first reference clock being used to transmit and receive the first stream, and the second reference clock being used to transmit and receive a second stream related to another content to be reproduced in synchronization with the content related to the first stream; a first time according to the first reference clock; and a second time according to the second reference clock, the second time being associated with the first time based on the updated correspondence relationship.