Digital Video Pixel Tester for Error Visualization
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Solution Overview
Problem
Current methods for testing digital video distribution environments struggle to effectively diagnose and visualize small or individual pixel errors, which are difficult to detect due to their small magnitude or clustering, leading to challenges in maintaining optimal viewing experiences.
Innovation Solution
A system and method involving a digital video signal generator and analyzer that transmit and compare reference and test video bit streams, generating a diagnostic video stream by assigning distinct colors to matching and non-matching pixels, allowing for the visualization of pixel errors in a contrasting manner, even at different resolutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated diagnosis with objective scoring is used, then diagnostic efficiency is improved, but interpretability and ease of understanding deteriorates
Solution Approach 1:
The patent creates a visual copy of the pixel errors by generating a differential video that replicates the appearance of errors at their native resolution. This allows technicians to see actual pixel error patterns rather than abstract data, maintaining interpretability while enabling automated analysis
Solution Approach 2:
The patent uses color coding to represent different types of pixel errors in the differential video. By assigning specific colors to different error conditions, the system maintains ease of interpretation through intuitive visual cues while enabling automated diagnostic scoring
2Measurement precision
If differential video is displayed at native resolution, then pixel error location accuracy is improved, but visibility of small magnitude errors deteriorates
Solution Approach 1:
The patent applies color mapping to highlight pixel errors in the differential video. By assigning distinct colors to pixels with errors versus pixels without errors, small magnitude errors become visually distinguishable from background pixels, solving the visibility problem while maintaining native resolution for accurate location
Solution Approach 2:
The patent transforms the visual parameters of pixel errors by applying color intensity and hue changes based on error magnitude. This parameter transformation makes small errors detectable through color variation while preserving the native resolution spatial information for accurate error location
Data Source
AI summary
Presented is a system and method for testing a digital video distribution environment. A digital video signal generator transmits a reference video bit stream to a distribution path. A digital video signal analyzer receives a test video bit stream from the distribution path. The digital video signal analyzer generates a diagnostic video bit stream as a function of the reference video bit stream and the test video bit stream.