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GB/T 20528.2-2009: Ergonomics requirements for work with visual display based on flat panels -- Part 2: Ergonomics requirements for flat panel displays
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Ergonomics requirements for work with visual display based on flat panels -- Part 2: Ergonomics requirements for flat panel displays
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GB/T 20528.2-2009
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Basic data | Standard ID | GB/T 20528.2-2009 (GB/T20528.2-2009) | | Description (Translated English) | Ergonomics requirements for work with visual display based on flat panels -- Part 2: Ergonomics requirements for flat panel displays | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A25 | | Classification of International Standard | 13.180 | | Word Count Estimation | 118,160 | | Date of Issue | 2009-05-06 | | Date of Implementation | 2009-11-01 | | Quoted Standard | ISO 9241-3-1992; ISO 9241-6; ISO 9241-7; ISO 9241-8-1997; CIE 15.2-1986 | | Adopted Standard | ISO 13406-2-2001, IDT | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 6, 2009 (No. 146 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies: for flat panel display screens office tasks, picture elements arranged in rows and rows evenly spaced and there is no gap between the rules of sequence consisting of flat panel display screen, displays Latin, Cyrillic and Greek alphabet characters in a variety of fonts, as well as Arabic numerals flat monitor screen, Asian character display, sufficiently large to display at least 40 latin characters flat panel display screens. | GB/T 20528.2-2009: Ergonomics requirements for work with visual display based on flat panels -- Part 2: Ergonomics requirements for flat panel displays
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Ergonomics requirements for work with visual display based on flat panels.Part 2. Ergonomics requirements for flat panel displays
ICS 13.180
A25
National Standards of People's Republic of China
GB/T 20528.2-2009/ISO 13406-2.2001
Based flat visual display
Ergonomic requirements for work
Part 2. a flat panel display Ergonomic requirements
(ISO 13406-2.2001, IDT)
Posted 2009-05-06
2009-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
Introduction Ⅳ
1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Symbol 14
5 Guidelines 18
6 performance requirements 19
7 design requirements and recommendations 19
7.1 design horizon 19
7.2 Design viewing direction 20
7.3 Design screen brightness 22
7.4 Note perspectives and head tilt angle 22
Uniform color difference 22 7.5
7.6 character height 23
7.7 stroke width 24
7.8 Aspect Ratio 24 characters
7.9 Fill Factor 24
7.10 24 character format
Character spacing 24 7.11
Word spacing 24 7.12
7.13 line spacing 24
Display brightness 25 7.14
Contrast 25 7.15
Luminance balance 26 7.16
Reflection 7.17 26
7.18 Image polarity 28
7.19 brightness uniformity 28
7.20 29 pixel defects
Imaging time 30 7.21
7.22 Pure Brightness encoder 30
7.23 Flashing coding 30
7.24 transient instability (shaking) 30
The default color settings 30 7.25
Size over 7.26 color objects 30
Color 30 7.27
7.28 color spectrum limit 31
Number of colors 31 7.29
GB/T 20528.2-2009/ISO 13406-2.2001
8 Measurement 31
8.1 Overview 31
32 8.2 Supplier Requirements
8.3 Test laboratory requirements 34
8.4 Geometry Test 41
8.5 Analysis of the combination of characters designed to test 48
Combination 8.6 brightness, contrast, diffuse illumination of the test 49
8.7 Needs Assessment 51
9 compliance check 80
Appendix A (informative) color difference calculated 82
Annex B (informative) flashes determination 84
Annex C (informative) bidirectional reflectance distribution function (BRDF) 91
References 105
GB/T 20528.2-2009/ISO 13406-2.2001
Foreword
GB/T 20528 "flat-based visual display Ergonomic requirements for work" is divided into two parts.
--- Part 1. General;
--- Part 2. Ergonomic flat panel display requirements.
This part of GB/T 20528 Part 2.
This part identical with ISO 13406-2.2001 "work-based flat-panel visual displays - Part 2 Ergonomics requirements.
Flat panel displays Ergonomic requirements "(in English), and in accordance with ISO 13406-2.2001 draft translation.
This part of the Annex A, Annex B and Annex C is informative appendix.
This part of the National Standardization Technical Committee on Ergonomics of human and centralized.
This section is drafted. Lenovo (Beijing) Co., Ltd., China National Institute of Standardization.
The main drafters of this section. Chen Bohong, Qian Wang Ying, Liu Taijie, so Ran Hua, Zhang Xin, Xiao Hui.
This section first release.
GB/T 20528.2-2009/ISO 13406-2.2001
Introduction
This section expands its companion standard GB/T 18978, serve to explain the trade-offs in performance Ergonomic flat course and showed
Exhibit significant differences.
The basic principle in this section are described in the GB/T 20528.1.
This section provides instructions for flat-based visual display equipment (VDUs) requirements, slate is defined in GB/T 20528.1. The standard
Quasi-oriented assessment of this technology and users. Users will find some documents in the portion of the material is very complicated. By providing comments, diagrams and
Samples, and to reduce the problem. Tablet clarity is the main concern. The demand is mainly based on the use of the visual in ISO 9241-3
Ergonomics research, as well as from the GB/T 20528 that are mentioned in the new research. Here, as in ISO 9241-3
As some of the demand is based on visual comfort, muscular comfort and user acceptability. GB/T 20528 in this section include demand
And suggested that these requirements and recommendations are based on the time clarity, comfort and acceptability, and these requirements are in the use of color display
It appears, based on visual ergonomics described in ISO 9241-8; however modify and extend these requirements and recommendations to be considered flat
The only compromise. Readability and undesirable reflection image acceptability of places around the presence of light, which is applied to
All aspects of the process plate, corresponding to ISO 9241-7 on a cathode ray tube (CRT) technology in all aspects of the process.
Defined in Chapter 3 of the show or re-submit those requiring special needs and measurable terms. Where possible, references from its
Define his publications, such as the definition to make some changes, then after the definition will be described. Since the GB/T 20528 in this part of the regular
Rely on mathematical models and physical measurement methods to ensure the effectiveness of the purpose of flat visual display device (VDU), it is proposed in Chapter 8 (symbol)
As a convenience of reference.
Guiding principles and performance needs of Chapter 9 has been modeled in ISO 9241-3, the document presented here is to remind the user of this work
basis.
Design requirements and recommendations are presented for a number of physical properties, they need to explain the need for strict compliance (with the "should" is the word statements),
Or just the best-compliance is not required to comply (with the "appropriate" is the word statements). Horizon design, design viewing direction and design screen brightness
Theme and ISO 9241-3, there are some differences described. There are two reasons.
a) a flat observation has important feature type, compared to ISO 9241-3 to consider, in the viewing direction needs to be more careful control
And considerations.
b) does not assume the flat visual display device according to the desktop. These topics of ergonomics as a constraint on supply
Performance specifications of the proposed requiring manufacturers. This is not without precedent, the viewing distance ISO 9241-3 mention in this manner
Out. Once they are ordained, these requirements became constraints or other required measures determined properties.
Wherein an ISO 9241-3 brightness different subject area is used. In the CRT technology, general siting bit more closely, in order to
To a kind of high - low - high - low - high - low-resolution mode will show a lower contrast than the sparse mode. When the ratio of the pixel area than flat
100% of the optical modulator is smaller (fill factor smaller than 1), the difference between sparse and dense pattern contrast will be less. Criteria for observation because of the brightness
Directions required accuracy is complicated. Region brightness will make it easier to use.
Some of the demand will appear in the classification. For example, some imaging plate a long time. For still images, it is such a flat finish
Full compliance with ergonomics acceptability. But not all modern applications are uniquely dependent on this static image. Thus the need to establish
Seeking classification. If the device is supplied with such limitations, supplier/evaluator shall identify it. Such systems integrators, buyers
Or the user can consider this category are consistent with its target application.
Metrics included in Chapter 8 for flat video display device and evaluators established. Flat surface sampling is to assess the sample. selected
Optional assessment and measuring three points, and compliance is determined to make these measurements. It requires a large plate boundary does not require precise evaluation device, and
Small plate boundary is required.
Chapter 9 includes provisions in ISO 9241-3 is close to compliance requirements. Optional test (visual performance and comfort test)
GB/T 20528.2-2009/ISO 13406-2.2001
As a standardized appendix ISO 9241-3 amendment with the emergence and cited as an optional compliance testing path.
Appendix A provides additional information about the color differences. Appendix B extends the ISO 9241-3 are resolved on time modulation of brightness
Flicker solution method, this method and the CRT is not exactly the same. Appendix C tells the user that a new work standards, this new work is
Modeling compromise with screen reflection properties, and such properties using a simple combination of luminance coefficient (diffuse) and luminance factor (Mirror
Surface or regular reflection) method can not be described adequately, but not standardized assumptions about the environment. This approach developed bi
Reflectance distribution function. When this work has made further progress, it could be replaced by a conventional method and described in Chapter 8
The method described above. A list of references cited in the references.
GB/T 20528.2-2009/ISO 13406-2.2001
Based flat visual display
Ergonomic requirements for work
Part 2. a flat panel display Ergonomic requirements
1 Scope
GB/T 20528 in this section.
--- The establishment of a flat panel display design and evaluation of image quality ergonomic requirements;
--- Specifies the need for a flat panel display is used to describe the image quality of terms and definitions;
--- Specifies the method of the flat panel display image quality testing;
--- The establishment of these needs-oriented ergonomic principles.
This section GB/T 20528 apply to.
--- Conduct office tasks for a flat panel display screen;
--- Image elements are arranged in a flat panel display screen sequence of rules evenly spaced and there is no gap between lines of the composition;
--- Displays various font Latin alphabet, Cyrillic and Greek alphabet characters and Arabic numerals of flat panel displays
screen;
--- Display Asian characters;
--- Large enough to display at least 40 Latin characters flat display screen.
This section GB/T 20528 does not apply in the following flat panel display technology.
--- Using the optical principle to construct an image, so that different image size photoelectric sensors (projection applications of flat panel displays), or
--- Only for fixed display segments or alphanumeric information (see IEC /SC47C (central office) 3.1992 2.13).
Note. This section GB/T 20528 in the number of measurement methods (such as contrast and brightness) does not apply to the reflective flat panel displays. When technological development, appropriate
When the measurement method will be added to this part of ISO 13406.
2 Normative references
The following documents contain provisions which, through reference GB/T 20528 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
ISO 9241-3.1992 using a visual display terminal display terminals (VDTs) Ergonomic requirements for office - Part 3. Visual
Display requirements
ISO 9241-6 use of visual display terminals (VDTs) Ergonomic requirements for office - Part 6. Work Environment Guide
ISO 9241-7 use of visual display terminals (VDTs) Ergonomic requirements for office - Part 7. a display device with reflection
Claim
Color display. ISO 9241-8.1997 using visual display terminals (VDTs) - Part 8 office ergonomics requirements
Claim
CIE Publication No. 15.2. 1986 chromaticity. (CIE Central Bureau) in Vienna, Austria.
GB/T 20528.2-2009/ISO 13406-2.2001
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