CPE Test System Staging Automation for Scalable Quality Control
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Solution Overview
Problem
Conventional quality test systems for end-user devices like set-top boxes and game consoles face challenges due to varying connectivity and inputs, leading to complex and inefficient testing processes, especially when swapping units for testing purposes.
Innovation Solution
A machine architecture implementing a staging automation process with multiple IR transmitters, composite video inputs, and SNMP protocol for units with DOCSIS capability, allowing for automated high-volume quality testing, diagnostic validation, and efficient communication through a DSG channel for diagnostic information retrieval and command execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual reconfiguration of connections is used when swapping UUTs, then adaptability to different unit types is improved, but productivity and testing efficiency deteriorate
Solution Approach 1:
The system pre-configures multiple media format boards with different connectivity options (HDMI, USB, Ethernet, composite video) before testing begins. When a UUT needs to be tested, the appropriate MFB is already prepared and can be automatically assigned, eliminating manual reconfiguration time and maintaining adaptability to different unit types.
Solution Approach 2:
The test system employs multiple media format boards that can handle various connection types (HDMI, USB, Ethernet, composite video) simultaneously. This universal capability allows the system to test different UUT types without requiring manual reconfiguration, as each MFB can accommodate multiple connectivity standards.
2Adaptability or versatility
If multiple media format boards with varying connectivity are used, then adaptability to different UUT makes and models is improved, but device complexity deteriorates
Solution Approach 1:
The system divides the testing functionality into separate media format boards, each specialized for specific connection types. This segmentation allows each board to be optimized for its particular function while the overall system gains versatility through the combination of specialized components, managing complexity through functional separation.
Solution Approach 2:
The media format boards serve as intermediaries between the UUTs and the test system. Each MFB translates and adapts signals from different connection types into a standardized format that the test system can process, simplifying the interface management and reducing overall system complexity despite supporting multiple connectivity options.
3Productivity
If concurrent processing is implemented for pre-provisioning, provisioning, and post-provisioning phases, then productivity is improved, but reliability may deteriorate due to detection of intermittent failures
Solution Approach 1:
The system implements periodic verification checks throughout the concurrent processing of pre-provisioning, provisioning, and post-provisioning phases. By periodically validating unit status and test results, the system maintains reliability despite running multiple phases in parallel, ensuring that intermittent failures are detected and handled appropriately without compromising overall throughput.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces latency in provisioning units that pass verification, enables concurrent processing to detect intermittent failures, and facilitates parallel execution of pre-provisioning, provisioning, and post-provisioning phases, improving scalability and efficiency in quality testing.
Implementation Method 1
Each of the testing units outputs infra-red commands to a corresponding different subset of the units under test
Data Source
AI summary
A test system for testing a plurality of end-user devices. A controller performs pre-provision verification, provisioning, and post-provision testing. Pre-provision verification can be performed on a subset of end-user devices while others are bring provisioned.