Deep notes on sensors, drift, and architecture.
Engineering writeups for integrators, OEM partners, and customers who want to know exactly what is happening underneath the hood.
From Screwdrivers to Software: The Real Story of the Test Pattern Generator
In AV and TV calibration, the external test pattern generator is treated as essential equipment — a dedicated box, often little more…
Making Different Displays Match: Why Standard-Gamut Calibration Falls Short and What a Common Gamut Solves
A finding has to look the same on every screen it is reviewed on. That is the quiet contract behind every multi-monitor…
Why Medical Facilities Choose DisplayPort Over HDMI for Clinical Workstations
Walk behind a radiology reading station, an OR integration rack, or a hospital PACS workstation in the United States, and the cable…
Beyond the Gray Axis: Why CIE L*/CIELAB Calibration Outperforms DICOM GSDF on Modern Medical Displays
For more than two decades, the question of how a medical display should be calibrated has had a single, almost reflexive answer:…
System-wide 3D LUT application on Windows, macOS, Android TV, and Linux
A QUBYX white paper on OS-level 3D LUT support, platform constraints, and practical integration routes for colour-critical displays and OEM systems.
PDF report signing and evidence chain
How PerfectLum/EPD/Chroma sign reports, embed measurement metadata, and survive long-term archival.
Delta-E variants — which one to actually use
CIE76 vs CIE94 vs CIEDE2000 vs CIEDE2000 graphic arts — what each measures and when it matters for verification.
SmartSensor S1 I²C and UART register map overview
How the S1 OEM module exposes calibration and measurement registers, with read/write examples.
RemoteQA air-gapped deployment architecture
The components, network boundaries, and update model for running RemoteQA in fully isolated networks.
Backlight aging and luminance drift over time
Empirical drift curves we measure across LED, OLED, and CCFL panels, and what they imply for QA cadence.
