Automated DVD Player Compatibility Testing via Reference Copying
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Solution Overview
Problem
The labor-intensive and time-consuming process of testing DVD players for functionality, quality, and compatibility, especially with increasing navigational complexity and the number of manufacturers, makes it impractical to manually test all possible navigation paths and compatibility with various players, leading to potential errors and reduced market appeal.
Innovation Solution
A data processing system and method using a DVD-Video image as a test standard, with a controller, identifier extractor, and correlator to automatically assess player performance by correlating identification data with output signals, allowing for efficient compatibility testing and reducing labor and time costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual testing of all navigation paths is performed, then testing completeness is improved, but testing time and labor cost increase significantly
Solution Approach 1:
The patent uses a reference DVD player that replicates the navigation behavior of compliant players. Instead of manually testing all paths, the system copies the expected navigation pattern from the reference player and automatically compares actual player responses against this copied standard, achieving complete testing coverage without manual intervention
Solution Approach 2:
The patent replaces manual mechanical testing with an automated computer-based system. The testing apparatus automatically controls the DVD player, extracts navigation data, compares it with expected patterns, and generates compliance reports, eliminating human operators from the testing process
2Adaptability or versatility
If testing is performed with increasing number of manufacturers and players, then market compatibility coverage is improved, but testing complexity and resource requirements increase
Solution Approach 1:
The patent creates a universal testing apparatus that can evaluate multiple DVD players from different manufacturers using the same reference-based methodology. The system handles various player types (standard players, region-free players, different brands) through a single unified testing framework, eliminating the need for separate testing procedures for each manufacturer
Solution Approach 2:
The system copies the navigation behavior patterns from a reference compliant player and uses this copied standard to automatically evaluate multiple players. This allows consistent comparison across all manufacturers without increasing testing complexity, as the same reference-based approach applies to every player tested
3Loss of time
If statistical sampling of navigation paths is used, then testing time is reduced, but detection precision of errors decreases
Solution Approach 1:
Instead of sampling, the patent copies the complete expected navigation pattern from a reference player and automatically compares it against actual player responses. This allows 100% coverage of all navigation paths while maintaining automated efficiency, eliminating the trade-off between sampling and precision
Solution Approach 2:
The testing system continuously monitors and compares navigation data throughout the entire DVD playback process without interruption. The reference player's navigation pattern is continuously extracted and compared with the test player's actual behavior, ensuring complete coverage of all navigation paths including edge cases and error conditions
Data Source
AI summary
Embodiments of the present invention relate to a data processing system and method for automatically testing a digital content player to ensure compliance with a video image data specification.