GB/T 38548.6-2020 in English
VALIDContent resources digitization—Part 6:Model of application
- Issued on:2020-03-06
- Implemented on:2020-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
| Standard No: | GB/T 38548.6-2020 |
| Document status: | VALID |
| Title in English: | Content resources digitization—Part 6:Model of application |
| Title in Chinese: | 内容资源数字化加工 第6部分：应用模式 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-03-06 |
| Implemented on: | 2020-10-01 |
| ICS Classification: | 35.240.30-IT applications in information, documentation and publishing |
| Chinese Classification: | L70-Information processing technology in general |
| Professional Classification: | GB-National Standard |
| Related Topics: | Digitizing
gb content gb/ content digital processing energy content application mode "Digitizing containerized application GB/T 38548.6 GB/T 38548.6-2020 |
《GB/T 38548.6-2020内容资源数字化加工 第6部分：应用模式》由TC553（全国新闻出版信息标准化技术委员会）归口，主管部门为国家新闻出版署(国家版权局)。
Introduction
Analysis of the Standard Framework
| Dimensions | Long-term Preservation Mode | Release Service Mode |
|---|---|---|
| Core Objectives | Permanent Preservation of Digital Form | Multi-carrier Communication Application |
| Key Technologies | Basic Scanning/Photography Technology | EPub/Audio and Video Coding |
| Quality Requirements | High-fidelity Storage Specifications | Cross-platform Compatibility |
Technical Specifications for Long-term Preservation Mode
According to clause 3.2 of the standard, long-term preservation requires the use of uncompressed TIFF format (above 600 dpi) for basic digitization, and the establishment of a metadata index system that complies with ISO/TR 18492. Typical cases include:
- The National Library's ancient book scanning project uses the CRUSE scanner to achieve a color restoration degree of ΔE≤3
- The archives' on-demand printing system supports accurate output of 256 grayscale values
Key points for publishing service implementation
E-book processing flow
Standard 4.3.1 stipulates that streaming files must meet the following requirements:
- EPub3.0 standard compatibility
- CSS style separation
- Text reflow error rate <0.5%
Audio and video program packaging
According to the requirements of standard 4.3.2:
- H.264 encoding video bit rate ≥ 2Mbps
- AAC audio sampling rate 44.1kHz
- Metadata complies with Dublin Core specifications
Analysis of standard evolution
Compared with the 2015 version of the standard, the 2020 version has the following major improvements:
- Added structural requirements for content database (4.3.4)
- Clarified the color gamut standard for long-term preservation (CIE LAB)
- Refine the depth of EPub file chapter navigation (≥3 levels)
Implementation suggestions
Enterprises should focus on the following when implementing:
- Dual-track storage: Separate management of original scanned files and files for publication
- Metadata mapping: Establish the corresponding relationship between METS and ONIX fields
- Quality inspection points: Color difference detection, OCR accuracy, streaming file adaptive test
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