DAM is the English acronym for "Digital Asset Management." It also has another name "Content Management" (English and abbreviated as CM). With the development of cross-media publishing, DAM has received more and more attention from the publishing industry. DAM is not only a tool for digital information storage management. It is gradually becoming the core of the publishing system in the IoT era. The technical advances DAM brings to cross-media publishing have been fully demonstrated in the applications of Chinese publishing users.

First, the change in the information life cycle has enabled DAM to embark on the front desk of information dissemination. While affecting the editing, production, and distribution of traditional publishing, it has also profoundly affected the published information itself. The carrier of publishing information is no longer a single paper medium. The organization of publishing information is no longer a simple linear structure. It is particularly important that the life cycle of publishing information has also been greatly changed with the advent of the Internet. After the newspaper has completed its first life cycle, its digital form will start the second longer life cycle of the newspaper's news and the longer backbone of the Internet. It has become a trend and trend that digitized publishing information is retrieved, reused, traded, and rewritten.

In this trend and trend, cross-media publishing technology came into being. Making a release several times became the goal pursued by the publishing community. Under such demand, the traditional document management system database system seems to be somewhat incompetent. Fortunately, the XML-based DAM system can exactly meet the requirements of cross-media publishing. The first with dataless XML documents makes it possible to reuse published information. Secondly, XML documents do not have data related to the performance of published information. The published content can theoretically be published on any medium. The DAM system is duty-bound to assume responsibility for managing XML documents in a cross-media publishing system. The Internet has enabled DAM to embark on the front end of information dissemination to the core of the technology of cross-media publishing.

Second, DAM is the basis for cross-media publishing systems. It should be said that DAM is not specifically designed for cross-media publishing. Only specially designed DAMs that meet specific functional requirements are suitable for cross-media publishing. A DAM system that meets this requirement can be constructed by the XMLgA structure of publishing information, storage and retrieval of XML data, and cross-media publishing of publishing information to form the technical core of the system.

It should be said that until now, most of the commonly used text editing and layout software is for printing and printing. To store the result data of these software outputs in the OAM system, it must be normalized to convert these data into XML data. Automatic processing to achieve this conversion is the goal people have been pursuing. The current technology is far from people's expectation and there is still a considerable distance, so that the demand for data conversion derives from a data processing industry that specializes in converting data formats. It is also necessary to edit the stored data while storing the data in the XML format in the data storage system of the DAM system. An easy-to-use XML editor is very important.

The XMLtg structure of publishing information lays a good data foundation for realizing automatic cross-media publishing. Publishing problems with XML data coupled with the publishing of styled data published on XSLT can be resolved. However, the publication of XML data and the release of optical discs will take some time, especially when RIP does not support XML output. An alternative method is to embed XML data directly into the layout of the layout software through soft plug-in technology. The transfer of XML data to PS data is implemented by the layout software. The issue of converting the PS to the release of the PDF disc after the release of the paper media was solved also solved the problem.

Cross-media information publishing is just one aspect of DAM's important application of information. Publishing information retrieval Mining transactions can be implemented in the DAM system to effectively extend the life cycle of publishing information. The organic combination of DAM technology and cross-media publishing technology has provided a broad space for the development of electronic publishing technology.

3. Founder Transmedia Publishing System Based on DAM Founder Electronics has applied DAM technology and SGML technology to a cross-media publishing system since 1995. Currently developed products include cross-media publishing systems and services that serve China’s newspaper industry. Published cross-media publishing system. Founder Electronics’ Press Cross-media Publishing System is shown in the figure below. In the News DAM system shown in the figure above, the NIML format based on MML is adopted as the core data standard to ensure the feasibility of cross-media publishing in data. The XML filtering program converts the output format of the software commonly used by news reporters to the NITF format. The XML editor implements the editing of existing manuscripts and the preparation of new manuscripts. The output of this system is undoubtedly cross-media.

The cross-media publishing system published by Founder Electronics's dictionaries is shown below (figure omitted)
The system was developed since 1995 and there was no XML at the time and SGML was adopted. Dictionaries are a type of publication that has a relatively long life cycle, but local changes to certain professional terms are necessary. The original intention of designing this system is to meet the needs of printing reprints and CD publishing. Fortunately, SGML was initially chosen to expand the system's publishing capabilities to the Internet as a very natural result. The characteristic of this system is that it realizes the automatic conversion of the printed dictionaries electronic data format to the SGML format.

IV. Prospects for DAM in the field of cross-media publishing DAM has given convincing applications in the publishing field but there are still many problems to be studied and solved. The data analysis function in DAM system is usually realized through data mining technology. The traditional data mining technology is mainly based on structured data in plain text data and relational database. How do data mining for XML data in DAM? This is a question worth studying. Another problem that needs to be solved for cross-media publishing based on DAM is the automatic summarization problem. The difference in the distribution medium by the DAD causes the content in the DAM to not be directly published. In particular, for a publishing device with a small screen, it is more necessary to abbreviate the longer content information into shorter distribution information. Only the automatic abbreviations of the content is implemented to meet the needs of the automatic publishing function on the small-screen publishing device. Before the DAM-oriented text editing tool software is widely accepted, the demand for the automatic conversion of the output of printing software for typesetting software into DAM data for cross-media publishing will continue to exist. If the problem of automatic format conversion does not solve this problem well, it will become a bottleneck problem that hinders the development of publishing DAM.

Due to the characteristics of cross-media publishing publishing information itself, publishing-oriented DAM systems have the irreplaceable advantages of other current information management systems. From this point of view, whether the DAM system itself or the DAM application system, the potential application requirements will continue to grow, especially since the hypermedia features of the Internet information release make the DAM system facing the Internet information release must have video audio and animation in addition to text image graphics. Data description, management, and publishing capabilities. Fortunately, GM DAM manufacturers have already developed many products in this area, which lays a solid foundation for the development of cross-media publishing and application DAM technology.

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