1 Scope
This standard specifies measurement conditions and methods for digital television flat panel displays with standard definition and high definition (hereinafter referred to as displays).
This standard is applicable to liquid crystal display (LCD) and plasma display of digital televisions and may be implemented by reference for flat panel television broadcast receivers which are compatible with receiving and meet those specified in GB 3174-1995.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 6882-1986 Acoustics - Determination of Sound Power Levels of Noise Sources - Precision Methods for Anechoic and Semi-anechoic Rooms
GB/T 14857-1993 The Specifications of Encoding Parameters of Digital Television for Studio (idt ITU 601-3:1992)
GB/T 17309.1-1998 Methods of Measurement on Receivers for Television Broadcast Transmissions - Part 1: Introduction Considerations - Electrical Measurements at Radio and Video Frequencies and Measurements on Displays (idt IEC 60107-1: 1995)
SJ/T 11157-1998 Methods of Measurement on Receivers for Television Broadcast Transmissions - Part 2: Electrical Measurements on Audio Channels Methods in Introduction and Those for Monophonic Channels (idt IEC 60107-2:1995)
SJ/T 11324-2006 Terminology of Digital Television Receiving Equipment
GY/T 155-2000 Video Parameter Values for the HDTV Standard for Production and Programme Exchange (idt ITU-RBT.709-3: 1998)
3 Terms and Definitions
For the purpose of this publication, terms and definitions established in SJ/T 11324-2006 and the following ones apply:
3.1
Response time
It refers to the required time for the luminance of each pixel of displays to change from darkness to bright and then return to darkness under the action of excitation signal. The response time is the sum of rise time and fall time.
3.2
Rise time
It refers to the required time for the image luminance to rise from 10% to 90% where each pixel of displays is under the action of excitation signal.
3.3
Fall time
It refers to the required time for the image luminance to drop from 90% to 10% where each pixel of displays is under the action of excitation signal.
3.4
Residual image
It refers that there still remains images on displays after images disappear where displays are in still video for a long time.
3.5
Smearing
It refers that moving objects leave residual images over the background or background leaves residual image over the moving objects where displays moving images and it is presented in smearing time.
3.6
Smearing time
It refers to the ratio of difference between the displayed length and the actual length of moving objects in direction of movement to the movement velocity, including bright smearing time and dark smearing time. Where the luminance ratio of moving objects is higher than its background luminance, the smearing time is referred to as bright smearing time; where the luminance ratio of moving objects is lower than its background luminance, the smearing time is referred to as dark smearing time.
1 Scope
2 Normative References
3 Terms and Definitions
4 Introduction Measurement Requirements
4.1 Introduction Description
4.2 Test Signal
4.3 Test Instrument
4.4 Measurement Conditions
4.5 Test under Introduction Operating Conditions
4.6 Display Format
4.7 Consumed Power of Complete Machine
4.8 Standby Consumed Power
5 Image Display Characteristic
5.1 Introduction
5.2 Luminance
5.3 Contrast
5.4 Luminance Uniformity
5.5 White Chromaticity Error
5.6 Primary Color Chromaticity Coordinate
5.7 Correlated Color Temperature
5.8 Color Domain Coverage Ratio
5.9 White Chromaticity Non-uniformity
5.10 Reproduction Rate
5.11 Definition
5.12 View Angle
5.13 Pixel Defect
5.14 Residual Image
5.15 Inherent Resolution
5.16 White Balance Error
5.17 Relationship of Luminance Uniformity with View Angle
5.18 Relationship of Chromaticity with View Angle
5.19 Smearing Time of Moving Image
5.20 Ratio of Luminance to Power
5.21 Make Break Ratio
5.22 Response Time
5.23 Gray Scale Response Time
5.24 Luminance Nonlinearity
5.25 Luminance Starting Characteristic
5.26 Light Leakage
5.27 Black Level Stability
6 Sound Channel Characteristics
6.1 Description for Sound Channel Inspection
6.2 Stereo Sound Channel Measurement
6.3 Work Noise Level
6.4 Standby Noise Level
Appendix A (Informative) Examples for Test Chart
Appendix B (Informative) Standard Working Group of Function and Performance Test Methods for Digital Television Receiving Equipment
