What is Telematics?

Telematics (telematics) is a general term for the use of telecommunications networks for telematics processing and communication between terminals.

Telematics (telematics) is a general term for the use of telecommunications networks for telematics processing and communication between terminals.

Chinese name

Telematics

English name

telematics

definition

A comprehensive system of communications, information acquisition, and Internet technologies. A compound word for telecommunications and informatics. Nowadays, the term is gradually used in information service systems including wireless communication and satellite positioning used in automobiles.

Applied discipline

Communication technology (first-level discipline), service and application (second-level discipline)

The above content was published by the National Science and Technology Terminology Examination Committee.

Chinese name

Telematics

Foreign name

telematics

Applied discipline

Communications, services and applications

Introduction to Telematics

Telematics is a general term for the use of telecommunications networks to perform telematics and communication between terminals. Telematics is the product of a combination of computer information processing and communications. Such services can be applied to office automation and data communications between individuals. Telematics, which emerged in the 1980s, opened up various non-telephony services in addition to traditional telegraph, telephone and data communications. In a narrow sense, it mainly includes user fax, intelligent user telegram, teletext, telegraph Wait.

Telematics Features

The characteristic of telematics is that the information processed includes text and graphics. It can not only transmit information, but also process information. Under the condition that the rapidly developing digital telephone network and public data network mutually promote each other, telematics has established its own non-phone service network, forming a situation where multiple networks coexist.

Telematics user fax

There are many types of user fax services, including photo fax, document fax, newspaper fax, and weather. Fax networks can be divided into two categories. One is a fax network that uses the public telephone network to transmit fax services; the other is a public fax network based on store-and-forward. Because the public telephone network is spread all over the world, and the communication quality is improving day by day, more than 90% of fax users still use the public telephone network.

Network fax service is a good combination of broadband network and traditional telephone fax service. As long as users can access the broadband network, they can send and receive faxes directly using a computer or any mobile terminal through an Internet fax platform constructed by a fax server. Through the Internet fax system, users can send faxes directly using browsers, clients, and Email, and fax sending can be completed in an instant. The operator will assign a local real fax number to each account. Other users can use ordinary telephone fax machines to send faxes to online fax users. After receiving a fax, users can flexibly perform fax distribution and forwarding.

The use of the network fax system can simplify the work process, improve work efficiency, save equipment purchase and maintenance costs, achieve paperless management, and make information communication more timely and smooth.

Telematics Smart User Telegram

Smart subscriber telegram is a long-distance text processing and communication service. Smart user telegram is different from user telegram, it is not direct communication between people, but high-speed automatic communication between terminal memories. It uses the keyboard to input text into the memory and disk, and edits the file through some special function keys, and realizes text transmission through the public data network or telephone network. Smart subscriber telegraph services are dominated by Germany, France, Sweden and other countries, and their development is much slower than expected.

Telematics video

Video teletext is an interactive two-way graphic search service. It implements an interactive session between a user terminal and a database through a public telephone network and a public packet-switched data network. Users can retrieve the graphic information of interest from the database. The information in the database can be updated regularly by information providers. Videotext is one of the fastest growing telematics businesses in the world, with France, the United States, Japan, Germany, and the United Kingdom mostly. Video-text services are mainly used in news, weather, sports, advertising, shopping, booking, finance, tourism, culture and entertainment.

Video teletext services are established on the basis of existing public telephone networks and public data packet switching networks. The videotext network consists of the videotext user terminal, editing terminal, access device, database, and videotext service management center. The functions of these devices are:

1. User terminal: A device installed in a user unit or home, or installed in a public place such as a telecommunications business hall or a hotel. Some are special-purpose terminals used in combination with telephones; some are microcomputer terminals made up of hardware cards and corresponding software on microcomputers; and some are terminals made up of keyboards and add-ons on home televisions. The user can input control commands through the keyboard to achieve the purpose of retrieving visual text.

2. Editing terminal: It is the bridge between the provider of visual information and the database. It can edit, delete, copy, and move text and graphic information, as well as store and read files.

3. Access device: It is the management and control center of the video system, and it is the network connection device for the user terminal on the telephone network to access the public data packet switching network database. For the telephone network, it is like a service desk for automatic answering; for the user, it can connect to the user's call, identify the user terminal, provide the user with menu prompts, and manage the user's network access process; and for the packet-switched network The access device is a packet terminal connected to a packet switch.

4. Database: It is a device for storing information, like a large library, which contains a large amount of classified information. Databases include public databases often managed by telecommunications departments and special databases established by some professional departments to open professional information to the public.

5. Business management center: It is a device that manages the access points of the entire network. It is responsible for registering, updating, deleting, and displaying the relevant information of the network access database. Once the information in each database is updated, it is immediately forwarded to the access device points. Make the data information of the entire network consistent. For users, there are various management functions such as user login, tariff calculation, statistics, etc.