The service life of in-vehicle infotainment systems is generally short-lived, which is incomparable with the service life of automobiles. Despite such a big difference between the two, the mid-range car's in-vehicle multimedia system has reached a new level.
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As far as the display is concerned, its development trend is getting bigger and bigger. In the near future, a car display with a size of 10′′ will appear in high-end cars; the current 5′′ display has become the standard configuration for mini cars. With the continuous improvement of the computing power of the microprocessor, the definition of the display is getting higher and higher, and the color of the navigation system is becoming more and more abundant. For example, a three-dimensional landscape display or a city traffic map can also be displayed on the display from different angles. According to the introduction of the Continental Group, with the support of the multimedia system control software, the navigation information of the colored vehicle travel route can be displayed in the captured image soon. If you think this is not enough, you can use the laser projection and windshield display technology to project the driving information of the vehicle onto the windshield in front of the driver. Continental has spent a long time developing the technology, Dr. Thomas Neumann, leader of Continental Electronics Technology, said: "This includes performance to improve driving safety."
What is the current situation? For example, what is the situation in the mid-range sedan in Germany? Audi's in-vehicle multimedia devices for A4 sedan users are: wireless radio, CD player and black and white 6.5′′ display. Willing to spend more money, you can also replace the above multimedia equipment with wireless radio, color 6.5′′ display, dual speakers or digital car radio. With an SD card reader, you can listen to music in MP3 and WMA formats, and its Bluetooth interface allows drivers to use their own mobile phones.
Audi and Mercedes-Benz plans
Audi plans to equip its new generation of models with a full range of multimedia entertainment devices controlled by the MMI user multimedia interactive system, including satellite navigation systems. For these two models, some auxiliary equipment, such as Bluetooth car phone, TV audio and voice operating system, are included. Navigation information comes from the DVD high-end infotainment system. This variant uses the AMI Audi music interface system. Here, both the iPod and the MP3 player with USB interface can be controlled by the MMI user multimedia interactive system. In order to keep up with the pace of electronic entertainment technology update cycle, Audi has adopted a modular structure design for its AMI music interface system software. The module that communicates with the vehicle is located in the controller of the car and is isolated by a separate firewall. Data communication with the music player is accomplished by separate driver software. For new players, DVD players, etc., new driver software has been specially developed and integrated into the controller, which will not interfere with internal communication.
In the Audi A4 sedan, Kronberg & Schubert completed the connection of the infotainment system with its cable harness for in-vehicle and instrument clusters. Some of the wires in this cable harness are cable conductors. In addition, they also provide complete engine control cables and other cables for the Audi A4 sedan.
In the new Mercedes-Benz C-Class, there are three infotainment systems available for users to choose from. In the mass-produced conventional C-Class, it is equipped with speed-related volume adjustment, keyboard and radio band adjustment device for entering the phone number, and Bluetooth interface for connecting the phone. In the basic configuration, the car radio has a CD player that plays MP3, four audio amplifiers with a power of 20W, and eight speakers. Various information is displayed on a 4.9" color display fixed in the center of the instrument panel. The user can be equipped with a changer capable of accommodating six CDs according to the user's needs.
The high-end infotainment device is a 7" color display Comand cockpit management and data multimedia system, navigation map display and hard disk storage for storing navigation data. In this 4GB hard drive, music files can also be saved. Its PCMIA interface Allow users to use different memory cards to reproduce stored music.
Voice operating system
For the first time, the voice operating system understood the operating instructions issued by people. These spoken words can be commands for the voice operating system, whether it is a destination command from a telephone, radio or navigation system. A microprocessor with a data processing capacity of 10 MB converts these acoustic signals into digital signals of a specific frequency, from which the phonemes are extracted. These phonemes are part of the voice. Through the combination of voice contrast and phoneme with the built-in dictionary, the voice operating system can know the meaning of each word. Whether you speak German, English, French, Italian, Spanish or Dutch, it recognizes it. The largest thesaurus is in California, USA: Here, it can save the name of 220,000 roads. Speech synthesis technology is also used in the Mercedes-Benz C-Class sedan to ensure that important instructions from the driver of the car about the driving route can be repeated, or SMS messages can be read aloud.
In addition to the different audio navigation systems, the latest M3 BMW sedan is equipped with a large number of communication facilities. Data and information can be exchanged between cars and fixed network devices via the Internet and telephone networks. For example, the BMW Assist system has the features of emergency call, accident assistance, traffic information and mobile help desk. For example, when the airbag is released, the emergency call function automatically sends a distress signal. The location signal of the vehicle is sent to the service center via SMS, and the vehicle maintenance data is transmitted to the BMW service station through the wireless communication service.
At the end of 2007, Volkswagen conducted a major change of communication system, using the information and entertainment system developed by Continental in its Touareg, Touran and Tiguan models. Its navigation hard drive has 20GB of music storage capacity, SD card reader and CD/DVD drive, all of which are the highest level of modern products. The digital two-channel audio equipment also guarantees good sound at the farthest position.
Players who love off-road vehicles can find their way to drive in the open air. Its 6.5" touch screen can be subdivided into several partial views. Continental's entertainment information system has been in the Volkswagen Golf and Passat models since 2008.
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