Dynamic Sampling Rate Adjustment for Jitter Mitigation in Content Modification
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Solution Overview
Problem
Content-presentation devices face challenges in performing controlled content modification due to timing irregularities, known as jitter, which affect the ability to accurately match and modify broadcast content.
Innovation Solution
The system switches from a lower sampling rate to a higher sampling rate to generate query fingerprints that align with reference fingerprints using timestamps to compensate for timing jitter, ensuring accurate content modification opportunities are identified and executed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If content-presentation devices use lower sampling rates to generate query fingerprints, then processing complexity is reduced, but timing precision and jitter compensation capability deteriorate
Solution Approach 1:
The system dynamically adjusts the sampling rate based on operational context. During normal operation, a lower sampling rate is used to minimize processing complexity. When content modification opportunities are detected or timing-critical operations are required, the system switches to a higher sampling rate to improve timing precision and jitter compensation capability. This dynamic adaptation resolves the contradiction by making the sampling rate a variable parameter rather than a fixed value.
Solution Approach 2:
The invention changes the sampling rate parameter from a static value to a variable that can be adjusted based on system needs. By implementing multiple sampling rates and selectively applying them based on the operational state (normal operation vs. content modification mode), the system optimizes the balance between processing complexity and timing precision at different stages of operation.
2Measurement precision
If content-presentation devices use higher sampling rates to compensate for jitter, then timing precision improves, but processing complexity and computational load increase
Solution Approach 1:
The system employs dynamic sampling rate adjustment where the sampling rate is elevated only when necessary for content modification operations. During normal content playback, the system operates at a lower sampling rate to minimize computational load. When modification opportunities arise, the sampling rate is temporarily increased to ensure precise timing and jitter compensation, thereby resolving the contradiction through temporal separation of processing requirements.
Solution Approach 2:
The system performs preliminary actions by detecting content modification opportunities in advance and preparing the necessary processing resources before the actual modification occurs. By identifying upcoming modification opportunities and pre-adjusting the sampling rate accordingly, the system avoids the need to maintain high sampling rates continuously, thus reducing overall processing complexity while ensuring timing precision when needed.
3Productivity
If content-presentation devices sample content frames at lower rates, then processing efficiency improves, but the ability to accurately identify content modification opportunities deteriorates
Solution Approach 1:
The system dynamically switches between different sampling rates based on the operational phase. During normal content delivery, a lower sampling rate maintains high processing efficiency. When content modification opportunities are detected or anticipated, the system transitions to a higher sampling rate to ensure reliable and accurate identification of modification opportunities, thus resolving the contradiction through contextual adaptation.
Solution Approach 2:
The system employs feedback mechanisms where the content-distribution system provides reference fingerprint data that enables the content-presentation device to verify and confirm content modification opportunities. This feedback loop allows the system to use lower sampling rates during normal operation while maintaining reliable identification accuracy through the feedback-based verification process, particularly during content modification operations.
Data Source
AI summary
One high-level aspect of a content-modification system and related methods may involve facilitating content modification by a content-presentation device of received broadcast content in a controlled manner, while under circumstances in which some events that can impact timing may be unpredictable. In particular, certain operations by a content-presentation device may involve matching received content with specific expected content as determined by one or another component of the content-modification system, in order to confirm proper conditions are met for the content-presentation device to proceed with, or continue, content-modification operations. It can happen the matching procedure becomes subject or susceptible to timing irregularities, or jitter. In some instances, jitter may impact the ability to derive the benefits of content modification. Accordingly, example embodiments herein are directed to systems and method for compensation and/or mitigating the effects of jitter.