SIST EN 61966-4:2001

Overview

EN 61966-4:2000 (IEC 61966-4:2000) - Multimedia systems and equipment - Colour measurement and management - Part 4: Equipment using liquid crystal display (LCD) panels.
This European/IEC standard covers colour measurement and colour management procedures specifically for transmissive-type LCD panels used to display colour images in multimedia applications. It defines the required test signals, measurement conditions and methods of measurement needed to enable consistent display calibration, colour management and meaningful comparison of test results between devices and laboratories.

Key topics and requirements

• Scope and applicability: Focused on transmissive LCD panels for multimedia systems (video, teleconferencing, desktop displays).
• Test signals: Standardized image and signal patterns to be used when evaluating colour reproduction, contrast and chromaticity.
• Measurement conditions: Defined environmental and electrical conditions (illumination, viewing geometry, signal timing and input levels) to ensure repeatable results.
• Measurement methods: Procedures for measuring chromaticity, luminance and colourimetric behaviour of LCD displays so results can be compared comprehensively.
• Colour management enabling: Provides the measurement foundation required for device profiling, calibration and colour pipeline integration across multimedia systems.
• Repeatability and comparability: Emphasis on consistent procedures so manufacturers and test labs can compare performance metrics reliably.

Applications

EN 61966-4 is practical for any organization involved in the production, testing or integration of LCD displays in multimedia contexts:

• Display manufacturers - validate colour performance, produce device specifications and support factory calibration.
• Test and calibration laboratories - perform standardized colourimetric measurements and provide certification or conformance reports.
• System integrators and OEMs - ensure consistent colour reproduction across multimedia equipment and video conferencing systems.
• Software developers - implement calibration, profiling and colour management workflows for displays and graphics pipelines.
• Content producers - reference standard test conditions when authoring visual content intended for LCD-based systems.

Who should use this standard

• Engineers and technicians responsible for display testing, quality assurance, and colour calibration.
• Product managers and R&D teams in multimedia equipment and teleconferencing product lines.
• Labs performing inter-laboratory comparisons and manufacturers seeking consistent product claims.

Related standards

• Other parts of the EN/IEC 61966 series (colour measurement and management) and international colourimetry guidance (CIE documents) are commonly used alongside EN 61966-4 to build a full colour-management and measurement framework.

Keywords: EN 61966-4, IEC 61966-4, colour measurement, colour management, LCD panels, liquid crystal display, multimedia systems, display calibration, test signals, measurement conditions.